JPS6030626B2 - Fabric folding method and folding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a folding method and a folding device for automatically folding the edge of a fabric into three and sewing the folded edge.

For example, towels are made by cutting a long, continuous towel to a certain length, folding both ends of the cut towel fabric into thirds with the edges facing inward, and sewing these three folds with sewing thread. It is something that can be worn and finished.

Traditionally, the three-fold finish on both ends of the towel was done manually, which was extremely inefficient and resulted in high processing costs, which was a major factor in the rise in towel prices. The current situation is that there is a strong desire for the realization of down technology.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a folding method and a folding device that can automatically and efficiently fold the ends of fabric into three.

The structure of this invention is to lift the end of the fabric sent by the conveyor with a folding belt, bend the edge of the fabric anew onto a groove-shaped guide plate at a reversing part provided in the middle of this belt, and then create a first folded piece. forming a second bent piece by folding the end side of the first new bent piece into the groove of the guide plate using a pushing belt;
The second folded piece is folded inward to form a trifold portion.

The present invention will be described below based on embodiments shown in the accompanying drawings.

As shown in FIGS. 1 and 2, the folding device is used to fold a rectangular fabric
a conveyor 1 that supports the fabric A and moves the fabric A in a direction parallel to the edge green; a guide plate 2 disposed above the moving fabric A near both ends; A folding belt 3 arranged to run on the guide plate 2 and a pushing belt 4 arranged on the guide plate 2.
A sewing machine 5 for sewing the tri-folded portion is arranged behind the terminal end of the guide plate 2. In the illustrated case, the conveyor 1 uses a plurality of belt conveyors that run on a table 6, and the part from the running start end on the right side of FIG. 2 until it reaches the guide plate 2 is the setting position la of the fabric A. .

In order to reliably hold and convey the supported fabric A, the conveying body 1 may have a porous belt and fix the fabric A to the belt by suction from the lower part of the belt.
may be conveyed by being held between upper and lower sides by a belt, and the conveyor is not limited to a belt conveyor, and other conveyors such as a chain may be used.
The guide plate 2 extends long in parallel with the direction of movement of the fabric A, and has a substrate 7 horizontally arranged to form a passage gap for the fabric A between the guide plate 2 and the table 6, and a substrate 7 located on the fabric edge side of the substrate 7. It is formed by a horizontal U-shaped guide wall 8 provided in series on the side edge of the guide wall.

After this guide wall 8 is bent upward in a semicircular arc shape from the base plate 7, the upper part becomes a husband plate 9 parallel to the base plate 7, and between this husband plate 9 and the base plate 7, the side facing the center of the fabric A is A closed groove 10 is formed.

As shown in FIG. 2, the guide plate 2 has the side edge provided with the guide wall 8 inside the edge of the fabric A, as shown in FIG. The tip on the right side in FIG. 1 into which the fabric A enters is bent upward at a slight angle to ensure that the fabric A enters the lower part of the substrate 7. The folded belt 3 is arranged so as to run directly above the guide wall 8 of the guide plate 2.

This folding belt 3 consists of a first pulley 11 placed below the fabric A on the side of the tip of the guide plate 2, and a second pulley 11 placed halfway toward the tip on the guide wall 8. A pulley 12 , a third pulley 13 located at a position rearward of the rear end of the guide wall 8 , and a third pulley 1
above the fourth pulley 14 and the fifth pulley 1 arranged between the fourth pulley 14 and the first pulley 11.
6 and an endless belt 17 that is sequentially hung over each pulley, and the portion of the belt 17 that transitions from the second pulley 12 to the third pulley 13 runs overlapping the top plate 9 of the guide wall 8. . In addition, the part where the first pulley 11 transitions to the second pulley 12 becomes a running starting point at a position lower than the fabric A, and the second pulley 11 is moved diagonally upward from the first pulley 11. 12, and as shown in FIG. It is designed to overlap on board 9. In the folding belt 3, a pulley at an appropriate position is driven by a motor to cause the lower running portion of the belt 17 to run in the same direction as the fabric A. After entering the lower part, the ama part moves from the first pulley 11 to the second pulley of the folding belt 3.
It rests on the part that transitions to the pulley 12, and is bent onto the guide wall 8 at the reversing part 18 while being gradually raised at this part, forming a first bent piece B that follows the outer circumference of the guide wall 8. It turns out.

As shown in FIG. 3, this first bent piece B is bent such that its end twill portion protrudes inwardly from the husband plate 9.

The pushing belt 4 has a first pulley 19 disposed approximately in the middle of the guide plate 2, and is disposed at the rear end of the guide plate 2 so that a part of its outer periphery faces into the groove 10, and rotates in a horizontal state. a push-in disk 20, a second pulley 21 located behind this disk 20, and a first pulley 19.
It is formed by a third pulley 22 whose pupil is located directly above the pupil, and an endless belt 23 suspended over each pulley.
0, and travels from this disk 20 toward the second pulley 21.

The first pulley 19 is disposed at a position slightly closer to the inside than the guide wall 8, and the belt 23 is connected to the disc 20 from this pulley 19.
'This facing portion gradually approaches the guide wall 8;
After being guided into this groove 24 in an iron-clad manner, the "second pool"
It will bend inward toward 1''21.

The disc 20 and the belt 23 are not limited to such a structure, and the belt may be folded in two using a disc with a sharp outer periphery. The part of the belt 23 guided by the disc 20 enters the groove 10 of the guide wall 8, and the first folded piece B of the fabric A moves on the top plate 9 while being pressed by the folding belt 3. The end twill part protruding from the husband plate 9 forms the groove 1 at the oblique part where the belt 23 moves from the first pulley 19 to the disc 20'.
0 and is completely bent into the groove 10 at the disc 20 portion to form the second bent piece C.

In this way, when the green end portion of the fabric A passes through the disk 20, it forms the first folded piece B and the second folded piece C newly bent inside the first folded piece B.
By pulling out the guide arm 8 with the tri-fold portion ○ formed, this tri-fold portion D is
It will be sewn by.

Please note that it is necessary to sew the name part into the fabric.
Furthermore, when sewing the trifold portion, if it is sewn as is, both end corners of the second folded piece C will protrude from both sides of the fabric, reducing the product value.

For this reason, while the fabric A is being moved by the conveyor 1, the moving end of the fabric A is detected and the speed of the folding belt 3 and the detector 26 that operates the name supply mechanism 25 are controlled.

Detectors 27, 28, such as light crab tubes, are provided. 1st
The detector 26 is arranged to detect the leading edge of the fabric A that has passed through the reversing part 18 of the folding belt 3, and the name supply V supply mechanism 25 is activated by the detection signal of this detector 26, and the end plate 9 A part of the name member is supplied between the first folded piece B and the first folded piece B, so that the name member is sewn together at the trifold portion D.

The second detector 27 is arranged at a position approximately in the middle of the guide plate 2, and when it detects the moving tip of the fabric A, the speed of the folding belt 3 is made slightly faster than that of the conveyor 1.

In other words, until the fabric A reaches the second detector 27, the speed of the folding belt 3 is slightly slower than that of the conveyor 1;
Therefore, the tip corner portion B of the first folded piece B is folded so as to be located slightly toward the center of the fabric due to the difference in feeding speed.

Further, when the second detector 27 detects the fabric A, the speed of the folding belt 3 becomes a little faster than the conveyor 1, so the rear end side corner B2 of the first folded piece B is fast-forwarded to detect the fabric A. It will be folded towards the center.

In this way, both end corners B of the first folded piece B and the horse are folded so that they are closer to the center of the fabric A, so that the first folded piece B
As shown in figure 0, corner B,,B when sewing in tri-folded state.
2 does not protrude from both sides of the fabric A.

The third detector 28 detects the fabric A that has reached the sewing machine 6 and activates the sewing machine 5.

The folding device of the present invention has the above-mentioned configuration.Next, the folding method will be explained based on the process diagrams shown in FIGS. 5 to 10. With the fabric A placed on the set position la of the conveying body 1, the conveying body 1 is run, the folding belt 3 is made to run slightly slower than the conveying body 1, and the pushing belt 4 is moved at the same speed as the conveying body 1. Run it with

Both ends of the fabric A fed by the conveyor 1 first enter the lower surface of the guide plate 2, and then are raised at the transition from the first pulley 11 to the second pulley 12 of the folding belt 3, as shown in FIG. As shown in FIG. 5, the belt 17 is bent onto the guide wall 8 by the reversing portion 18, and further, as shown in FIG. 6, it is sandwiched between the husband plate 9 and the belt 17 to form the first bent piece B.
When the fabric A passes the first detector 26 , the name part is fed onto the fabric A, and when the fabric A passes the second detector 27 , the folding belt 3 decelerates and becomes slightly slower than the conveyor 1 . Therefore, both end corners B, , B2 of the first folded piece B are folded toward the center of the fabric A.

When the fabric A on which the first folded piece B is formed moves further, the end twill part of the first folded piece B, which hangs down slightly from the end plate 9, is transferred from the first pulley 19 of the pushing belt 4 to the disk 20. At the transitional part, it is pushed into the groove 10 of the guide wall 8, as shown in FIG. 2nd folded
It is formed into a bent piece C.

When the fabric A passes the third detector 28, the electric sewing machine 5 is started, and the trifold part ○ extracted from the guide wall 8 is sewn as shown in FIG. 9, and the fabric A passes through the sewing machine 5. As a result, the end of the fabric A is sewn into a trifold portion D, as shown in FIG.

Note that the fabric A is not limited to terry cloth, and can be used to sew various types of fabric that require tri-folding.

As described above, according to the present invention, the edge green of the fabric sent by the conveyor is raised by the folding belt, folded back onto the grooved guide plate to form the first folded piece, and then the first folded piece is folded by the pushing belt. Since the end side of the folded piece is pushed into the groove to form the second folded piece, the trifold process for the edge of the fabric can be performed automatically, which saves labor in the trifold process. This makes it possible to improve efficiency and significantly reduce machining costs.

In addition, since the folding belt and the pushing belt are run at the same speed in both directions with the conveyor to perform trifold folding,
The first and second parts are bent and formed along the guide plate.
Since the folded piece can be forcibly fed and the entire fabric is fed, an accurate three-fold shape can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a front view of the folding device, FIG. 2 is a plan view showing one side of the same, FIG. 3 is a perspective view of the first half of the same, and FIG. 4 is a perspective view of the second half of the same. Each of the figures to FIG. 9 is a sectional view showing the folding process in order, and FIG. 10 is a perspective view of the completed sewing of the tri-folded part. 1 is a conveying body, 2 is a guide plate, and 3 is a folded part. belt,
4 is a push belt, 5 is a sewing machine, 8 is a guide wall, 9 is a husband plate, 10' groove, 18 is an inversion part, 20 is a disk, A is cloth, B is the first folded piece, C is the second The folded piece, D is the trifold part. Figure 3 Figure 5 Figure 6 Figure N Ship Figure 4 Figure 7 Figure 8 Figure 9 Figure 10

Claims (1)

[Claims] 1 The fabric is moved parallel to its edge, and while the fabric is moving, the edge of the fabric is lifted by a folding belt running at the same speed as the fabric in the direction of movement of the fabric. The end portion is folded back onto the groove-shaped guide plate at a reversing portion provided in the middle of the belt traveling to form a first folded piece, and then a piece of fabric is folded so that a part of the folded piece enters and passes through the groove of the guide plate. A second folded piece is formed by folding the end of the first folded piece into the groove using a pushing belt running at a high speed, and after passing through the guide plate, a second folded piece is formed between the first folded piece and the fabric. A method of folding cloth characterized by sandwiching pieces to form overlapping three-fold parts. 2. A conveyor that supports the fabric and moves the fabric in a direction parallel to the edge of the fabric, and a conveyor that is placed above the moving fabric in a position closer to the inside than the edge of the fabric and parallel to the direction of movement of the fabric. Consists of a groove-shaped guide plate, a folded belt placed on the guide plate, and a push-in belt that is also placed on the guide plate and whose lower running portion fits into the groove of the guide plate at the same speed as the conveyor. The part of the folded belt that runs at the same speed as the conveyor along the guide plate is such that the running start end is located below the fabric on the fabric entry end side of the guide plate, and it overlaps the terminal end side guide plate from the middle. A method for folding cloth, characterized in that the fabric is arranged so as to run on the guide plate, and is provided with a reversing part for folding the end of the lifted fabric onto the guide from the starting end of the fabric until it overlaps the guide plate. Device.