JPH0229358B2 - NUNOJITOTOGOMUAMITOTONOHOGOHOHOTOSOCHI - Google Patents

Description

[Detailed Description of the Invention] 3-1 Purpose of the Invention 3-1-1 Industrial Application Field The invention of this patent application (hereinafter referred to as the "Claim Invention") is a method for applying the upper and lower parts of clothing such as training wear. In order to be used for cuffs and hem openings of clothes, a rubber knitted tube with an outer diameter smaller than the inner diameter and made of vertically woven rubber is inserted into the inner surface of a fabric tube made of stretchable knitted fabric. Then, use an overlock sewing machine to overlock the ends of both tubes and sew on only the fabric tubes to match the diameters of both tubes. The present invention relates to a technique for forming a rubber knitted tube by turning it over as the outer surface and projecting the rubber knitted tube outward in the longitudinal direction from the fabric tube so as to be suitable for the cuffs and hem opening of the above-mentioned garment, and in particular relates to a method and device for suturing both tubes together. It is something.

3-1-2 Prior Art Conventionally, as shown in Patent Application No. 154899 filed in 1985 by the patent applicant for the present invention, fabric tubes and elastic rubber with a smaller diameter have been used. With the knitted tube in a horizontal state, overlap the rubber knitted tube along a part of the inside of the fabric tube so that both ends of both tubes meet, and then fold both tubes together so that the rubber knitted tube is larger than its natural diameter. While expanding horizontally from the inside to the outside, both ends of both tubes are sewn together.

However, in its natural state, the diameter of the fabric tube is 1.8 to 2 times larger than the diameter of the rubber knitted tube, so most of the fabric tube except one edge sag due to its weight, so the fabric feed of the sewing machine Due to the intermittent cloth feeding movement by the teeth, the drooping part of the cloth tube and its vicinity causes violent vertical movement, and the intermittent cloth feeding movement back and forth causes horizontal vibration.

Therefore, one end edge of the fabric tube to be sewn is on the left and right of the sewing position with a needle, etc. in the cloth feeding direction of the sewing machine.
As the fabric tube repeatedly moves back and forth violently in and out, causing meandering, one end edge of the fabric tube may be sewn away from the rubber knit tube or sewn deeper than the required seam allowance.
This caused defects that degraded the sewing quality of the product.

3-1-3 Problems to be Solved by the Invention The present invention solves the following problems: 1) Gravity acts such that the fabric tube is taut and is lifted by the inside of the fabric tube in connection with the shrinkage of the diameter due to the sewing machine. Bringing the working body into contact with the inside of the drooping part of the fabric tube, 2) Sewing both ends of both tubes together while swarming the fabric tube so that the diameter of the fabric tube matches the diameter of the rubber knit tube,
3) By configuring the gravity acting body to separate from the fabric tube just before the diameter of the fabric tube approaches the diameter of the rubber knit tube, the defects of the conventional technology mentioned above are resolved and the quality of sewing is improved. The purpose is to

3-2 Structure of the Invention 3-2-1 Means for Solving Problems 3-2-1-1 Background of the Invention (Summary) The present invention has a structure in which a material is attached to the inner surface of a fabric tube for use in cuffs, etc. Insert a rubber knitted tube that has an outer diameter smaller than the inner diameter, and overstitch both ends of both tubes and stubble stitch only the fabric tube so that the diameter of the fabric tube matches the diameter of the rubber knitted tube. To sew: 1) Place the gravity acting body on the inside of the drooping part of the fabric tube so that the fabric tube is taut and raised by the inside of the fabric tube in conjunction with the contraction in diameter due to the sewing machine; and 2) the gravity acting body is configured to separate from the fabric tube immediately before the diameter of the fabric tube approaches the diameter of the rubber knitted tube.

3-2-1-2 Structure of the Invention Examples of the present invention will be described below with reference to the drawings.

In FIG. 1, a sewing machine 1 is configured to form an overlock stitch on the edge of a cloth using a needle 2 that moves up and down to carry thread, a presser foot 3, a looper (not shown), a cloth feed dog, etc. below them. At the same time, in front of the presser foot 3 in the cloth feeding direction indicated by the arrow, there is provided a shirring device 4 that feeds the cloth while shrinking or folding only the upper cloth of the overlapped upper and lower cloths, and protrudes to the left. A fixed arm 5 having a rectangular cross section is mounted and fixed to form a so-called free arm overlock sewing machine.

On a horizontal table 6 on which the sewing machine 1 is fixed, a cylinder 7 with a built-in piston that is operated by supplying and discharging fluid is horizontally fixed so as to approach the sewing machine from the front to the front along the cloth feeding direction indicated by the arrow.
At the front end of the rod 8 that protrudes forward from the piston in the cylinder 7, the right end of a movable arm 9, which always approaches the front of the fixed arm 5 and whose left end is a free end, is rotatably supported. The middle part of the table 1 is rotatably supported on a vertical shaft 10 fixed to the table 1.

A shaft 11 is fixed to the table 6 horizontally from the right in front of the table 6 toward the sewing machine 1 in parallel with the cloth feeding direction indicated by the arrow, and a bearing 12 is slidably supported on the outer periphery of the shaft 11.

Groove 1 provided on the left side of table 6 parallel to the cloth feeding direction
A drive body 14 fitted in the inside of 3 so as to be slidable left and right and front and back.
and the front bearing 12 has a shaft 1 horizontally orthogonal to the shaft 11.
Fix 5.

A cylinder 17 having a built-in piston that operates by supplying and discharging fluid is fixed horizontally to the flange 16 fixed to the middle of the left and right sides of the shaft 15 and to the flange 12, parallel to the shaft 15. The left end of the rod 18, which protrudes to the left by movement, is fixed to the driving body.

On the left side of the driver 14 is an arm 1 that protrudes forward.
9 is fixed, and in the middle of the arm 19, a shaft 20 that is horizontally orthogonal to the arm 19 is fixed and protrudes to the left.An arm 21 that projects forward and parallel to the arm 19 is fixed to the shaft 20, and the front end of the arm 21 is fixed. A roller 22 parallel to the shaft 15 and projecting to the left is supported rotatably around its own axis, and a switch 23 projecting to the left and orthogonal to the arm 21 is fixed to the arm 19 at the front end of the arm 19. Between the switch 23 of the arm 19 and the shaft 20, a cylinder 24 with a built-in piston that operates by supplying and discharging fluid is fixed to the arm 19 and supported horizontally. By moving the rod 25 to the left, the rod 25 that protrudes to the left is fixed.

Between the switch 23, the cylinder 24, and the cylinder 17, the cylinder 2
4 is supplied with fluid by the action of the electromagnetic valve, the piston moves to the left, the rod 25 projects to the left below the arm 21, and after supporting the arm 21, the cylinder 17
Fluid is supplied by the action of the electromagnetic valve, the piston moves to the right, and the rod 18 moves to the right, and the driver 14 moves the arm 19 to the right to move the cylinder 24, the switch 23, the shaft 20, and the arm. An electric circuit is provided that closes the roller 22 so that it moves to the right together with the roller 21, and when the electric rotation starts, each part acts in the opposite manner to the above and moves to the left, and the arm 2
1. The roller 22 is configured to rotate downward by gravity around the shaft 20.

3-2-2 Operation of the invention The present invention is constructed to operate in the following order based on the above structure.

1 By discharging the fluid in the cylinder 7 and moving the piston forward, the rod 8 is moved forward, and the movable arm 9 is rotated clockwise in FIG. 5
placed close to and parallel to.

2. A rubber braided tube 26 having elasticity in the circumferential direction is surrounded and supported by the movable arm 9 and the fixed arm 5, and a fabric tube 27 which is longer and has a larger diameter than the rubber braided tube 26, such as elastic knit fabric, is made of rubber. It superimposes on the outer circumferential surface of the knitting tube 26 and surrounds and supports the arms 5 and 9, and the right edges of both tubes match vertically, and the needle 2 of the sewing machine 1, the presser foot 3, and the scorching device 4 are attached near the right end. Place it accordingly.

3 As shown in FIGS. 1 and 2, fluid is supplied to the cylinder 24, the rod 25 is protruded to the left, and the arm 21 is supported in the raised state, and the rod 22 is moved to the fabric tube 27.
Cylinder 17 so as to support the inside in front of
The fluid is discharged, the rod 18 is moved to the left, and the roller 22 is moved to the left.

4 As shown in Figure 1, by supplying fluid to the cylinder 7 and moving the piston forward, the rod 8 is moved forward and the moving arm 9 is rotated counterclockwise around the vertical axis 10. The rubber knitted tube 26 is then separated from the fixation toward the front, and both tubes are horizontally expanded toward the front from the inside to the outside so that the rubber knitted tube 26 is slightly larger than its natural diameter and a part of the fabric tube hangs down.

5 As shown in Figures 3 and 5, by discharging the fluid in the cylinder 24 and moving the rod 25 to the right to release the support of the arm 21, the arm 21 will be lowered by gravity around the shaft 20 along with the roller 22. The roller 22 descends and presses the hanging portion of the fabric tube 27 downward, and the fabric tube 27 becomes taut.

6 As shown in FIG. 6, while operating the sewing machine 1 and feeding the fabric between the rubber knit tube 26 and the fabric tube 27, make sure that the diameter of one end edge of the fabric tube 27 matches the diameter of the rubber knit tube 26. When one end edge of the fabric tube 27 to be sewn to the rubber knitted tube 26 is shirred and contracted by the shirring device 4 and the one end edges of both tubes are continued to be sewn together, the roller 22 resists the gravity due to its weight and the fabric tube 27 Due to the diameter contraction, it contacts and follows the inner surface of the fabric tube 27 and rises toward the front in the fabric feeding direction.

7 As shown in FIG. 7, the roller 22 rises and then comes into contact with the lower surface of the rubber knit tube 26. If sewing continues, the roller 22 moves from the front of the rubber knit tube 26 to the upper side, and moves between the two tubes. 4 and 7, the arm 21 of the rubber knitting tube 26 should be When the cylinder 24 contacts the switch 23, fluid is supplied to the cylinder 24 through an electric circuit, the piston moves to the left, the rod 25 projects to the left below the arm 21, and after supporting the arm 21, the cylinder 24 As the piston moves to the right and the rod 18 moves to the right, the driver 14 moves along with the cylinder 24, switch 23, shaft 20, and arm 21 through the right movement of the arm 19, and the roller 22. It also moves to the right and escapes from the inner peripheral surface of the fabric tube 27 to the right.

8 Continue sewing both ends of the rubber knit tube 26 and fabric tube 27, and when the diameters of both match, the sewing machine 1
stop.

9. To adjust the raised position of the roller 22, move and stop the switch 23 and cylinder 24 along the arm 19 as appropriate.

3-2-3 Other Examples In order to adjust the raised position of the roller 22, the switch 23 and the cylinder 24 are made movable and lockable along the arm 19, and the cylinders 7, 17, 24 are movable and lockable.
It is also possible to use an electromagnetic solenoid by the action of electromagnetic force.

3-3 Effects of the Invention Since the present invention has the above-mentioned configuration and operates, it has the following effects.

1 Fabric tube 27 with a larger diameter than the rubber knitted tube 26
The sewing machine 1 is fixed near the sewing part, is tensioned by movable rollers 5 and 9, and is pressed and supported by the cloth presser foot 3, but the lower part hangs down due to gravity due to the weight, so during sewing, the cloth feed dog Due to the intermittent cloth feeding movement, the vicinity of the drooping part causes intense vertical, horizontal, and back-and-forth vibrations, and one end edge to be sewn with the rubber knitted tube 26 causes intense reciprocating movement in and out of the left and right of the needle. It tries to meander, but since the roller 22 and the weight of the arm 21 come in contact with the inside of the drooping part of the fabric tube 27 and gravity acts, the drooping part does not vibrate and one end edge does not meander. One end edge of the fabric tube 27 and the rubber knit tube 26 to be sewn is sewn accurately with the needle 2 in a straight line along the cloth feeding direction while maintaining the required seam allowance without being deviated or sewn deeper than the required seam allowance. , the quality of sewing of sewn products is improved.

2. When the sewing progresses until the diameter of the fabric tube 27 approaches the diameter of the rubber knit tube 26, the roller 22 that contacts the drooping part of the fabric tube 27 and applies the action of gravity is removed from the fabric tube 27. The roller 22 is not sewn between the rubber knitting tube 26 and the fabric tube 27, and the sewn portion of the roller 22 and the sewing machine 1 does not collide and break.

[Brief explanation of drawings]

Figure 1 is a perspective view of the whole as viewed diagonally from the front left;
Figures 3 and 4 are top views of the main parts, Figures 5, 6,
FIG. 7 is a left side view of the main parts of FIG. 1 when viewed from the left.

Claims (1)

[Claims] 1. A stretchable fabric tube and an elastic knitted rubber tube with a smaller diameter and shorter length are placed in a horizontal state, and the inner periphery of the fabric tube is adjusted so that both end edges of both tubes match. Polymerize the rubber knitted tube along a part of the surface, and expand both tubes horizontally from the inside to the outside so that the rubber knitted tube is slightly larger than its natural diameter and a part of the fabric tube hangs down. (c) applying gravity from the outside by contacting the inner circumferential surface of the drooping part of the fabric tube so that the fabric tube becomes tense and rises due to the inner circumferential surface of the fabric tube as its diameter contracts; (d) While shrinking one end edge of the fabric tube so that the diameter of one end edge of the fabric tube matches the diameter of the rubber knitted tube, one end edge of both tubes is continued to be sewn together using a sewing machine, and (e) the diameter of the fabric tube matches the diameter of the rubber knitted tube. A fabric tube characterized in that the action of gravity is removed from the fabric tube when the diameter approaches the fabric tube, and (f) both ends of both tubes are further sewn together until the diameters of both tubes match. and the method of suturing it with a rubber knitted tube. 2. In a horizontal state, a stretchable fabric tube and an elastic knitted rubber tube with a smaller diameter and shorter length are placed in a horizontal position. The knitted tubes are polymerized, and both tubes are expanded horizontally from the inside to the outside so that the rubber knitted tube is slightly larger than its natural diameter and a portion of the fabric tube hangs down, and the diameter of one end edge of the fabric tube is In order to match the diameter of the rubber knitted tube, one end edge of the fabric tube is contracted and one end edge of both tubes are sewn together using a sewing machine. (a) A sewing machine with a seam part, and (b) A direction in which the fabric feeds from the sewing machine seam part. (c) A fixed arm that protrudes horizontally from the sewing machine seam section perpendicular to the cloth feeding direction and is fixed; (d) It always approaches parallel to the fixed arm and can be stopped at a distance from the fixed arm. a moving arm; (e) a roller connected to the inner peripheral surface of the drooping part of the fabric tube to apply gravity so that the fabric tube is tensioned and raised by the inner circumferential surface of the fabric tube in connection with contraction of its diameter; (f) a suturing device for sewing a fabric tube and a rubber knit tube, comprising: a cylinder that operates a roller to separate the roller from the fabric tube when the diameter of the fabric tube approaches the diameter of the rubber knit tube; .