JPS5829119B2 - Automatic feeding and sewing device for forming loops through the band around the waist of pants - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that automatically sews a pandoroop-forming tape (hereinafter simply referred to as "tape") to the waist of pants, by folding both ends of the tape 180 degrees downward. , and is characterized in that it is sewn from the top of both folded parts in two places.

Conventionally, various types of pants, such as work pants, jeans,
A large number of pandoroops P as shown in FIG. 2 are sewn onto the pants.

This sewing work is generally not done manually, and the work process is as follows: First, the worker manually folds one end of the cut tape 180 degrees downward, and cycles the folded end. Place it on the waist of the pants set on the sewing machine, and perform a □thin stitch from the top.

Next, after moving the entire pants to the next sewing position 1,
This is a completely manual method in which the other end of the tape is folded down 180 degrees by hand and the sewing machine is sewn from the top.

Therefore, such manual work requires a great deal of labor and time, resulting in high production costs.

In view of the above, a device that automatically sews bread loops has been developed and an application has already been published (Japanese Patent Publication No. 5130822), but this conventional device now performs the following four main steps. ing.

That is, the step of sending the shredded pieces by the carriage to the position of the loop feeding head structure and receiving and taking the shredded pieces by this head structure.

Next, a step of folding the cut pieces by the head structure and passing the folded cut pieces to the feeding clamp structure.

Next, the step of transporting the folded cut pieces by the feed clamp structure and delivering them to the sewing device.

Finally, the process consists of sewing the folded cut pieces using a sewing device.

As mentioned above, the conventional device requires many steps and therefore has a complicated mechanism.

Therefore, the present invention aims to simplify the mechanism and speed up the work by omitting the conveyance mechanism for shredded pieces using a carriage in the conventional apparatus, and by having the same mechanism fold and hold the shredded pieces. This is how it was done.

An embodiment of the device of the present invention will be described below with reference to the drawings.

The feeding mechanism 50 for the tape M in the apparatus of the present invention has a channel-shaped binder 5 mounted on a feeding base 51 disposed above the side of the sewing machine 200 as shown in FIGS. 1 and 3.
2 is provided, the tape M is inserted from one end 52a of this binder 52, and the other end 5 is fed by the action of the feeding claw 53.
2b.

The tape insertion binder 52 is formed into a flat rectangular cylindrical shape so that the tape M does not swing horizontally or vertically within the binder 52, and the tape M is pushed out without resistance. is tape M
It is shaped to widen at the end to make it easier to insert it.

Further, an opening groove 5 is formed in the upper side of the binder 52 in the longitudinal direction.
4 is formed, and the feed claw 53 is inserted into this opening groove 54, and this feed claw 53 is inserted into the binder 5.
2 is configured to move forward and backward within the opening groove 54 by the operation of a pneumatic cylinder 55 provided in parallel with the opening groove 54.

The feed pawl 53 is rotatably mounted on a holding metal 57 fixed to the tip of the piston rod 56 of the pneumatic cylinder 55 via a rotary shaft 58 and a feed pawl holding collar 59 in a cantilevered manner. 53 is holding metal 5
7 and a torsion coil spring 60 provided between the retaining collar 59
It is constantly subjected to a downward rotational force, that is, in a counterclockwise direction.

As a result, the feed pawl 53 bites into the tape M when it advances from the position shown in FIG. When the claw 53 returns, it will slide on the surface of the tape M.

Further, the feed pawl 53 needs to move forward and backward accurately within the opening groove 54 of the binder 52 without swinging from side to side, and for this reason, as shown in the figure, the pneumatic cylinder 55 is placed at an angle where its piston rod 56 is prevented from rotating. type is used.

Further, the rear end of the holding metal 57 comes into contact with a restraining piece 61, thereby restricting the backward movement of the holding metal 57.

Therefore, the retraction length of the feed claw 53 is limited, and the length L-1') obtained by subtracting the retraction prevention length l from the stroke L of the pneumatic cylinder 55 becomes the length of tape M to be fed out per one time. The feeding length of the tape M can be adjusted by changing this backward blocking length l.

The stopper piece 61 is an L-shaped adjusting plate 6.
2, and this adjustment plate 62
is located in the gap between the feeding base 51 and the binder 52, and is placed on the upper surface of the feeding base 51.
The binder 5 is fixed to the feed base 51 by screwing in a single fixing screw 64 through an elongated hole 63 formed in the binder 5 2a.
It is movable along the longitudinal direction of 2.

In the figure, 65 is an indicator fixed to the adjustment plate 62, which indicates the scale of the scale plate 66 provided on the side of the feed base 51, and indicates the feed amount of the tape M, that is, the length (L-1) mentioned above. It is determined by this scale.

On the other hand, a movable blade 67 for cutting the tape is disposed in front of the outlet end 52b of the binder 52.
The tape M is cut by cooperation with a fixed blade 68 provided at the tip of the feed base 51, and is fixed to the tip protrusion 69 of a rotary shaft 71 provided parallel to the binder 52. There is.

The rotating shaft 71 is rotatably supported by a bearing portion 72 provided on the side of the sending base 51, and is tightened by a screw 77 between the end of the bearing portion 72 and the rear end of the rotating shaft 71. The movable blade 67 and fixed blade 6
Contact pressure with 8 is added.

The tip of a piston rod 79 of a pneumatic cylinder 78 disposed below the delivery base 51 is fixed to the lower end of the swing arm 76 by a pin 76a.As the piston rod 79 moves back and forth, the movable blade 67 is moved. It rotates to cut the tape M.

The protrusion 69 of the rotating shaft 71 has a tip bent downward so that the tip is connected to the outlet end 52 of the binder 52.
A spring piece 69a that can face into the opening groove 54 near b is fixed, and when the movable blade 67 rotates due to the rotation of the rotation shaft 71, the spring piece 69a also rotates at the same time, and the bent end of the spring piece 69a rotates. The tape M is pressed.

In this way, the feed claw 5 is pressed by the spring piece 69a.
3 is bent back to its original position, the tape M that has been fed flat will not be returned during the return process of the feed claw 53, and only the feed claw 53 will slide on the surface of the tape M and return to its original position. can return to.

Furthermore, as shown in FIG. 3, a seam detection mechanism 8 is provided near the outlet end 52b of the binder 52, and is configured to automatically detect when a seam of the tape M appears.
0 is set.

This is because Tape M is formed into a long strip by overlapping and splicing pieces of fabric cut to a certain length, so a certain length including this seam is cut and the tape becomes similar to a normal tape. When the pants are sent to the sewing machine 200 and sewn onto the pants, the pants look bad and defective products are produced.

Therefore, this joint part is automatically detected and removed by cutting.

As shown in FIG. 4, this seam detection mechanism 80 includes a bearing 81 provided on the side near the tip of the feed base 51, a rotatable horizontal shaft 82 provided on this bearing 81, and a rotatable horizontal shaft 82 provided on the bearing 81.
A diagonal T-shaped arm piece 83 having a horizontal upper surface and a protruding diagonal arm portion 83a at the bottom is fixed to the protruding portion.

The rear end of a detection plate 84, which has a downward protrusion 84a at its tip that lightly contacts the upper surface of the tape M, is fixed to the upper horizontal surface of this arm piece 83, and the detection plate 84 is fixed to the rear of the horizontal surface. By bending diagonally upward from the rear end so that the tip always lifts upward, and by adjusting the screwing of the adjustment screw 84b provided at the horizontal surface tip, the protrusion 84a of the detection plate 84 is placed on the top surface of the tape M. The degree of contact can be determined.

Furthermore, the diagonal arm portion 83a of the diagonal T-shaped reading piece 83 includes:
A swinging plate 85 whose lower half extends downward is fixed, and the swinging plate 85 has a tensile force that is hooked between its center and an extension plate 86 extending downward from the bearing 81. The coil spring 88 always draws the bird obliquely upward, and its lower end is in close contact with an air valve 87 provided at the lower end of the extension plate 86.

As shown in FIG. 5, an air source 91 is connected to this air valve 87 via a pipe 90 and a flow rate adjustment valve 89. This air valve 87 is closed by the swing plate 85. At this time, pilot pressure is applied to the inside of the pipe 90, but when the joint of the overlapping tapes M appears and the protrusion 84a of the detection plate 84 is lifted, the oblique T-shaped reading piece 83 becomes horizontal. Rotates clockwise around the shaft 82,
The swing plate 85 is separated from the air valve 87, creating a gap.

Then, the pressure in the pipe 90 decreases, and as a result, the pilot type switching valve 92 is switched, and the pressure switch 9 is also switched.
3 contacts are switched to emit a signal.

Then, based on this signal, the joint portion is removed as described later.

Furthermore, as shown in FIG.
In front of the outlet end 52b of No. 2, there is a tape holding mechanism 110 for fixing the tape M sent out by the feeding claw 53.
is provided, this tape pressing mechanism 110 is
As shown in Figures and Figure 8, the support stand 1 has a U-shaped planar shape.
A holding plate 111d parallel to the longitudinal direction of the binder 52 is provided at the front end 111a of the binder 52, and pneumatic cylinders 112 and 113 standing upright on this holding plate 111d are arranged in parallel, with one pneumatic cylinder 112 shown in FIG. As shown in FIG. 3, the movable blade 67 side is fixedly provided on the holding plate 111d via the erected fixed plate 114, and the other pneumatic cylinder 113 is moved and fixed to the holding plate 111d via the vertical movable plate 123. It can be worn freely.

A tape receiver plate 115 is arranged below the pneumatic cylinder 112 in the same positional relationship as the binder 52, and the plate 115 is fixed to the front surface of the holding plate 111d. It is fixed in a cantilevered manner to the lower end of the vertical standing plate 114 together with the contact piece 115b.

Further, a presser foot bar 116 is provided at the lower end of the square piston rod 112a of the pneumatic cylinder 112, and a coil spring 117 is fixed to the center of the lower end of the presser foot bar 116. Board 1
The tape M fed onto the tape 15 is pressed.

On the other hand, below the pneumatic cylinder 113, the tape receiver is placed on a plate 124 such that the receiver overlaps the lower surface of the plate 115.
is arranged, and this plate 124 touches the lower end of the edge stand movable plate 123 attached to the front surface of the holding plate 111d, and the piece 12
4b, and a notch 124a is formed at the tip thereof into which a guide rod 122 (to be described later) can be freely inserted.

In addition, the guide pin 123a provided on the back surface of the edge stand movable plate 123 is connected to the long groove 11 formed in the holding plate 111d.
1b, it can be moved along the long groove 111b, and fixed at an appropriate position with screws 126, 126 and nuts.

A presser foot tip 120 is provided at the lower end of the square piston rod 113a of the pneumatic cylinder 113. A coil spring 121 is fixed to the center of the lower end of the presser foot tip 120, and a lower half portion is attached to the front end of the presser foot tip 120. A guide rod 122 is provided which is bent outward at a certain angle (approximately 15 degrees), and as the presser foot tip 120 descends, the diagonal lower half of the guide rod 122 is bent out of the binder 52. The receiver is plate 12
4, the tape M shifted away from the contact piece 124b
It is designed to push the side part of the contact piece 124b and bring it closer together when it touches the contact piece 124b.

That is, even if the tape M is curved or straight, if the tape M leaves the binder 52 and is slightly deviated in its direction during feeding, the further it goes to the tip, the greater the deviation will be. In the separated state, the receiver is placed on the plates 115, 124, so that the guide rod 122 is used to return the tape M to its normal position.

In this way, the side part of the tape M is pressed and the contact piece 11
5b and 124b, both ends of the cut tape (to be described later) are folded into a forked shape (shirt) 18
When folded at 6,186, the folded portions can be formed so as to completely overlap without shifting.

Further, as described above, the pneumatic cylinder 112 located near the movable blade 67 is fixed, and the other pneumatic cylinder 113 is movable because the cut tape (
When the length (hereinafter simply referred to as "tape piece") changes,
This is to move the pneumatic cylinder 113 to keep the folded length of one end of the tape constant.

Reference numeral 139a in FIG.
The position of the movable pneumatic cylinder 113 is indicated by the scale of a scale plate 139 fixed to the upper surface of a.

Also, in FIG. 1, 136 is an L-shaped push rod provided at the tip of the square piston rod 137a of the pneumatic cylinder 137, and the lower end of this push rod 136 protrudes near the top surface 1 of the plate 115. After the movable blade 67 is actuated by the signal from the pressure switch 93 of the splicing amount detection mechanism 80 mentioned above to cut the spliced portion of the tape M, the piston rod 137a of the pneumatic cylinder 137 protrudes, and the tip of the piston rod 137a protrudes. The lower end of the pushed rod 136 is designed to flick off the seamed tape piece from the plates 115, 124.

Furthermore, as shown in FIG. 1, a movable bracket 152 is moved back and forth in the left-right direction by the operation of a pneumatic cylinder 151, and a piece of tape, which will be described later, is attached to the support base 111. A transport mechanism 150 is provided for advancing the folding mechanism 170 in the direction of the cycle □ shin 200 and, conversely, returning it from the position of the cycle □ shin 200.
50, as shown in FIGS. 1 and 8, a mounting arm 153 of a pneumatic cylinder 151 is provided protruding from the side of the vertical wall 111c of the support stand 111, and a support arm 154 is provided from both sides thereof.
, 155 to protrude laterally, and these support arms 154, 15
5, the guide shaft 156 is installed horizontally at the tip of the tape M, and in a direction perpendicular to the feeding direction of the tape M (horizontal direction).
Fixed to.

The guide shaft 156 has a movable bracket 1
52 is slidably mounted, and this movable bracket 152
is provided with a cylindrical sliding portion 152a that slides along the guide shaft 156, and extension arms 152b, 152b each extending in a direction perpendicular to the sliding portion 152a, Bearings 152c, 152c extending downward from both ends of the arms 152b, 152b include:
A fulcrum shaft 157 is horizontally supported in the front-rear direction.

Further, on this fulcrum shaft 157, each cylinder support metal 158, 158a is attached with a screw 159° 159a at the front and rear part thereof.
A gripping arm 162 with one end projecting sideways extends from the cylinder support 158a disposed at the rear of the cylinder, and a cam roller 163 is attached to the tip of the gripping arm 162. .

The cam roller 163 is engaged in a cam groove 161 formed in a cam plate 160 provided on the front surface of the vertical wall 111c of the support base 111, and when the movable bracket 152 moves, the cam The roller 163 moves into the cam groove 161 and rolls, and the two cylinder supports 158 and 158a rotate slightly around the fulcrum shaft 157 accordingly.

Further, a sliding arm 152d is protruded from an end of an extension arm 152b extending rearward of the movable bracket 152, and the sliding arm 152d is attached to the upper end of the vertical wall 111c of the support base 111 on the guide shaft 156. A sliding bracket 152 is slidably disposed in a guide groove 111e formed parallel to the guide shaft 156 to prevent the movable bracket 152 from rotating around the guide shaft 156.

Moreover, the cylindrical sliding portion 152 of this movable bracket 152
The tip of the piston rod 151a of the pneumatic cylinder 151 is attached to the upper end of the pneumatic cylinder 151 via an L-shaped connecting pin 165, and the rear end of the pneumatic cylinder 151 is attached to the tip of the mounting arm 153 provided on the support base 111. It is rotatably fixed by a pin 164.

Further, as shown in FIG. 1, two cylinder supports 158, 158a attached to a fulcrum shaft 157 provided on the movable bracket 152 are each fixed by the tape folding mechanism 110. A set of tape folding mechanisms 170 are provided for folding the ends of the tape strips, and the folding mechanisms 170 are configured substantially the same so as to fold both ends of the tape strips equally.

The one shown in FIG. 10 is placed on the front side, and the one placed on the rear side has mirror symmetry.

The following explanation will be based on the front side. Support plates 171.1 are provided at both left and right ends of the cylinder mounting bracket 158, respectively.
72 is fixed, a guide block 173 is attached to the tip of the left support plate 171, and a two-pronged metal fitting 174 is attached to the right support plate 172.

Furthermore, the pneumatic cylinder 17 is attached to the two-pronged metal fitting 174.
The rear end of the pneumatic cylinder 175 is rotatably fixed by a pin 176, and the tip of the square piston rod 175a of the pneumatic cylinder 175 is connected to the rear end 177a of the connecting block 177, as shown in FIG.

This connecting block 177 has a front shape of 'x'.
The rear end portion 177a, the intermediate portion 177b, and the front end portion 177c are integrally connected to form an E shape.
Bearings 178, 178 are provided at the center of the intermediate portion 177b and the front end portion 177c, respectively.
78, 178 are provided with a shaft portion of a pinion 179 passing therethrough, and a retaining collar 182 is disposed between the intermediate portion 1γ7b and the front end portion 177c. pinion 179
The shaft portion of the shaft portion and the root portion of a bending shaft 186 inserted into a center hole provided in the shaft portion are integrally connected and fixed.

Further, a hanging plate 183 is provided protruding from this intermediate portion 177b.
As shown in FIG. 10, a pneumatic cylinder 184 is fixed to the lower end of this hanging plate 183, and a piston rod 184a of this pneumatic cylinder 184 has a connecting block 185 arranged parallel to this piston rod 184a. 191, this rack 185 is engaged with the pinion 179, and a guide notch 183a formed at the upper end of the hanging plate 183.
One part that can be slid inside is prevented from rotating.

On the other hand, the tip of the bending shaft 186 extends to the left through a downwardly opening guide groove 173a formed at the lower end of the guide block 173 fixed to the left support plate 171. Has forked fingers 187, 18
7 are provided in a protruding manner, and the ends of the tape piece are held between the two forked fingers 187, 187.

This bent shaft 186 is connected to the guide block 1
The guide block 17 is moved by the wire spring 189 provided in the guide block 73.
The air ball cylinder 175 is supported in a pressed state on the upper surface of the guide groove 173a of No. 3, and is connected in a straight line to the bent shaft 186 via an E-shaped connecting block 177. The bending shaft 18 is always supported in an upwardly pushed state by a wire spring 188 fixed to the plate 172.
6 is capable of vertically swinging around a pin 176,
It is in a state where it is pushed upward by the action of wire springs 188 and 189.

The reason why the bending shaft 186 is configured to be able to swing in this manner is that the forked fingers 187, 187 of the bending shaft 186 feed the tape piece with both ends folded to the pants set in the cycle sewing machine 200, as will be described later. Then, when sewing the tape pieces on these pants, I used a sewing machine with a 200mm
This is to enable the fingers 187 and 187 to be pressed against the pants with the canvas presser feet 205 and 206.

After the fingers 187, 187 are pressed against the pants, when the transfer mechanism 150 bends the fingers 187, 187 back, the fingers 187, 187 return upward due to the action of the wire springs 188 and 189. There is.

Furthermore, when the fingers 187, 187 of the bending shaft 186 are retracted the most and the two phases 187, 187 are in a substantially perpendicular relationship, as shown by the dashed line in FIG. It is located at approximately the same position as the abutment piece 124b of the plate 124, and the lower finger 187 is located at approximately the same height as the upper surface of the plate 124.

Therefore, as shown in FIG. 12, the pair of fingers 187, 187 placed on the front and back (left and right) sides of the tape piece C placed on a plate (not shown) are initially It is positioned above the other, and in this state it moves forward and pinches the end of the tape piece C between the upper and lower fingers 187, 187.

Thereafter, the fingers 187, 187 are rotated approximately 270 degrees through the rank 185 and pinion 179 by the operation of the air box cylinder 184, and the fingers 187, which were located above, are rotated by about 270 degrees.
7 are respectively rotated outward to the positions shown by the dashed lines, and at the same time the lower fingers 187 are rotated at the same position to bend the end of the tape piece C.

On the other hand, as shown in FIG.
A connecting plate 195 with a scale 195b is attached to the upper surface of the left support plate 171, 171a of 58a, and the front bending mechanism 1 is connected to the rear bending mechanism 170.
It is now possible to measure 70 positions.

This connecting plate 195 is located on the rear side, that is, on the support base 11.
A scale 195b is attached to the support plate 171a located on the first side in a fixed position, and a scale 195b is attached to the support plate 171 on the other front side.
A screw 196 screwed into the support plate 171 can move within an elongated hole 195a formed on the side of the cylinder support plate 158.
When loosening the screw 159 fixing the to the fulcrum shaft 15γ,
The front folding mechanism 170 is the rear folding mechanism 170.
It is possible to move in the direction of or in the opposite direction, and as a result, the distance between the folding shafts 186° 186 arranged in front and behind can be changed.

The spacing is such that the indicator line 197 provided on the upper surface of the front supporting plate 171 is aligned with the scale 195a of the connecting plate 195.

In this example, the left support plate 171 attached to the cylinder mounting bracket 158 is approximately horizontal, whereas the right support plate 172 is attached to the cylinder support bracket 158 in an inclined manner.
As a result, the air pouch cylinder 175 is arranged upward from the fingers 18γ and 187, and the shape of the cam groove 161 of the cam plate 160, that is, the right side as shown in FIG. Low horizontal part 1 towards the left from
The finger 187 is shaped such that the cam roller 163 is positioned at the low horizontal portion 160a of the cam groove 161 when the finger 187 is moved back the most. When the tip moves as shown in Figure 18, it first moves upward in a straight line, drawing a straight line T1, then turns downward, drawing a curved line T2, and finally moves horizontally. Move and draw a horizontal trajectory T3.

Such movement is important in preventing the tip of the finger 187 from hitting the operator's hand near the temporary stand for pants, that is, the sewing machine bed 201.

If the finger 187 is guided to the position indicated by the two-dot chain line above the bet 201 by linear movement only, the finger 187 will hit even if the hand is slightly protruding upward from the bet 201, and the hand will be connected to the bet 201 and the finger 187. It is extremely dangerous to get caught between them.

However, if you draw a trajectory like the one described above, there is less chance of it hitting your hand.

Moreover, even if the finger 187 of the worker's hand hits the finger 18,
1 acts to push the hand down, so it is less dangerous.

On the other hand, the sewing machine 200 is an improved version of the well-known LK3-type Daikuru sewing machine.

That is, in the present invention, as shown in FIG. 1, a movable cloth holder is provided with a lower plate 204 on the upper surface of a sewing plate 203 provided in a bed 201 of a cycle sewing machine, and this cloth holder is provided with a lower plate 204 similar to the lower plate 204. A front presser foot 205 and a rear presser foot 206 are provided which can move vertically and independently move up and down.

The specific structure is as shown in Figs.
07a are overlapped and fixed, and parallel grooves 212° 212 are formed on both sides of the overlapped portion.

Then, on the upper surface of this sliding plate 207a, this sliding plate 2
A movable plate 208 having a plate width approximately 0.02 tr3/m wider than the plate width of 07a is slidably provided, and a protrusion 209 with a rectangular cross section is formed in the upper center of this movable plate 208. On the side, there is an angle plate 21 with a right-angled cross section.
3° 213 is fixed, and this angle plate 213, 213
The lower horizontal portion of the sliding plate 207a is located at both grooves 212°21.
2, and thus, this movable plate 208 is linearly movable with respect to the sliding plate 207a.

Further, right-angled L-shaped plates 214, 214 are fixed to the side surfaces of the angle plates 213, 213.
4 has a lower plate 204 for the cloth holder,
Ruler 215.215 for regulating the insertion of pants, connecting arm 2
16 is attached.

The tip of a piston rod 218a of an air cylinder cylinder 218 (shown in FIG. 15) is pinned to the tip of this connecting arm 216, and the rear end of this air cylinder 218 is connected to the rear end of the sliding plate 207a. Upright pin 2 protruding from
Therefore, by the operation of this pneumatic cylinder 218, the movable plate 208 is moved forward and backward relative to the sliding plate 207a and the cloth feeding plate 207 which is integrated with the sliding plate 207a.

Also, the piston rod 21 of the air cylinder 218
8a is provided with a stopper 260 as shown in FIG. 15, and this stopper 260 can be slid on the piston rod 218a by loosening a screw 261, and the stopper 260 can be moved to an appropriate position. By tightening the screw 261 to the air cylinder 2
The return length of 18 can be adjusted.

Further, as shown in FIG. 13, the lower plate 204 of the cloth receiver has a large rectangular hole 204a formed at its front end, and a small rectangular hole 204 at its rear end.
As shown in the figure, when the lower plate 204 is in a state of protruding forward, the hole 204b at the rear end of the cloth holder is formed around the needle hole 202a provided in the sewing plate 203. and a hole 20 in the front end
The cloth receiver 4a is positioned so that it is located around the needle hole 202a when the lower plate 204 is moved rearward.

Also, the reason why the hole 204a at the front end is large is that when the lengths of the bread loops are different, the cloth holder can be attached to the lower plate 20.
This is to cope with the change in the length of movement of 4.

Further, the protrusion 209 of the moving plate 208 has screw holes 219, 219, 219 formed in its front half, and a screw hole 220 formed in its rear half.
As shown in FIG. 15, a front presser support arm 221 is attached using the front presser support arm 221, and the lower side of the fixing portion 222 of the front presser support arm 221 is formed into a groove shape so as to fit into the outer shape of the protrusion 209. At the same time, an elongated hole 222a is provided in the center of this fixing part 222, and the groove of this fixing part 222 is fitted into the projection 209, and the fixing part 222 is fixed with a bolt 223.

A portion 22 extending laterally from this fixed portion 222
4 is the piston rod 2 of the air mocinonda 218;
The cloth holder is bent and raised to cover the upper part of the cloth holder 18a, and furthermore, the cloth holder extends straight forward in parallel with the lower plate 204, and a support block 225 is provided at the tip thereof.

A rectangular upright hole 225a is formed in the center of the support block 225, as shown in FIG. At the lower end of this slide plate 228, the cloth holder is attached to the tip of the lower plate 228.
A front presser foot 205 having an elongated hole 205a corresponding to the hole 204a at the front end of 04 is fixed.

Further, an L-shaped pin 22 is provided at the upper end of the support block 225.
6, the rear end of the air box cylinder 227 is attached to the rear end of the air box cylinder 227 facing downward. The front presser foot 205 has a cloth holder that can move up and down with respect to the lower plate 204.

Further, the curved portion 224 of the front presser support arm 221 has a first
As shown in FIG. 5, a connecting piece 224a is provided in a protruding manner, and the lower end of this connecting piece 224a
A stopper 26 provided on the piston rod 218a of
As a result, by loosening the fixing bolt 223 of the front presser support arm 221 and the fixing screw 261 of the stopper 260, the front presser support arm 22
1 and the stopper 260 can be moved in conjunction with each other, thereby making it possible to simultaneously adjust the return stroke of the air box cylinder 218 and the positioning of the front presser foot 205.

Further, the protrusion 209 of the movable plate 208 has a screw hole 220 provided in its rear half to attach the rear presser support arm 270.
is fixed, and this rear presser support arm 270
As shown in the figure, it is supported in a cantilevered manner, and a support block 271 is provided at the tip.

The support block 271 has an elongated hole 2 at its tip corresponding to the hole 204b at the rear end of the lower plate 204.
The arm 206a of the rear presser foot 206 having a diameter of 06b is attached so as to be movable up and down and without wobbling.
The tip of the presser foot lever 272 is inserted into the presser foot lever 272, and the operation of the presser foot lever 272 releases the rear cloth presser foot 206.
is designed to move up and down.

The configuration of this part is known per se and is the same as that generally provided in cycle sewing machines.

In the present invention, the bell crank 2 is attached to the rear presser support arm 270.
73 is rotatably attached, and one end of this bell crank 273 is connected to the presser lever 272 via a link 274, while a horizontal bar 275 is attached to the other end of this bell crank 273, and this horizontal bar 275 is connected to the presser lever 272 via a link 274. , which is located below the presser foot full operation plate 276 of the cycle sewing machine, which is known per se.

The presser lever 272 rotates around a fulcrum pin 272a, and is normally supported by a tension coil spring 27.
7 receives a clockwise rotational force.

Furthermore, in the figure, 278 is a transfer ball placed at the upper end of the rear presser support arm 270, and this ball 278 is housed in a cylindrical container 279, with a portion of the ball protruding upward from the container 279. , cycle sewing machine flat part 280
When the rear presser support arm 270 moves, the flat portion rolls on the lower side of the rear presser support arm 270, and further stabilizes the rear presser support arm 270.

With the above configuration, the presser foot lever 272 normally acts to push down the arm 206a of the rear cloth presser foot 206, moves the presser foot lifting rod 276a of the cycle sewing machine in the direction of the arrow, and lifts the fulcrum pin 276b. , 276b
By moving the actuating plate 276 downward via the non-stops 276c, 276c, which rotate about Presser lever 272
rotates around the fulcrum 272a to raise the arm 206a.

In the figure, 231 is an indicator protruding from the front side of the back presser foot support arm 270, which indicates the scale of the scale plate 230 fixed to the upper surface of the front presser foot support arm 221. The distance from the presser foot 206 is determined by this scale.

The distance between the front presser feet 205 and 206 corresponds to the return stroke of the air pocket cylinder 218.

Incidentally, the cycle sewing machine 200 generally performs stitching as shown in FIG. 17.

That is, lateral stitching 81 and diagonal stitching S2 are performed to firmly sew the bread loop to the waist of the pants.

Specifically, as shown in FIG. 2, pandoroops P are sewn onto pants G.

In this embodiment, a so-called multi-purpose machine with a structure in which the length of the pandroop can be adjusted is shown, but in the case of a dedicated machine with a fixed pandroop length, each adjustment mechanism may be constructed in a fixed manner. The structure becomes simple.

Furthermore, in the description of the device, there is no mention of a switch for obtaining an electrical signal and performing a series of sequences, but a person skilled in the art can easily implement the arrangement and sequence of this switch. Since this is a trivial matter, the explanation is omitted.

Next, the operation of the device of the present invention will be explained.

Prior to operation, each working part is adjusted to a predetermined pandoroop length.

That is, the position of the stopper piece 61 is adjusted by loosening the thumbscrew 64 provided in the feeding mechanism 50 for the tape M, and the retraction length of the feeding claw 53 is determined.

In accordance with this length, move and adjust the edge movable plate 123 of the tape folding mechanism 110 with respect to the holding plate 111a, and also position the support plate 171 and cylinder mounting bracket 158 of the tape folding mechanism 170 on the front side. and further,
The front presser foot 205 of the cycle sewing machine 200 is positioned.

When the adjustment of the device according to the length of the bread loop P is completed, the belt-shaped tape M formed in advance is attached to one end 52a of the binder 52 provided in the feeding mechanism 50.
At first, the end of the tape M is guided to the outlet end 52b of the binder 52 by hand.

In this state, start automatic sequence operation.

Although not shown in the drawings, when the main power switch is turned on, the air cylinder 55 operates to move the feed claw 53 forward, and the tape M is folded onto the plate 1 of the tape folding mechanism 110.
Send it out on 15,124.

At this time, as shown in FIG. 6, the front end of the tape M protrudes forward from the plate 124.

When the feeding of the tape M is completed, the tape folding mechanism 11
The pneumatic cylinders 112 and 113 installed at
The tape M is held by a guide rod 122 provided at the plate 124.
After moving the presser foot until it touches the contact piece 124b, each presser foot tip 1
The tape M is pressed by the coil springs 117 and 121 on the lower side of 16 and 120.

When the tape M is fixed in this way, the tape folding mechanisms 17, which are provided in the front and rear of the transport mechanism 150,
The pneumatic cylinder 175 of No. 0 operates to project the fingers 187° 187 to both ends of the tape M, and the upper and lower fingers 187, 1
Insert tape M between 87 and 87.

When the sandwiching of both ends of the tape M is completed, the air modilinder 78 is activated to rotate the movable blade 67 downward.
The tape M is cut.

When the movable blade 67 is in the lowered position, the feed claw 53 enters the return operation, but since the spring piece 69a is inserting the tape M at this time, the feed claw 53 slides on the surface of the tape M and returns. becomes.

The return of the feed claw 53 is regulated by a stopper piece 61.

After cutting the tape M, the piston rods 184a, 184a of the pneumatic modilinder 184° 184 are bent to move the racks 185, 185, and when the pinion 179° 179 is rotated by the movement of the racks 185, 185, the bending shaft is rotated. 186° 186 rotates about 2700 times, both ends of the tape piece C are folded as shown in FIG. 12, and at the same time, the tape piece C is held by the fingers 187, 187.

This state is shown by the solid line in FIG.

When the holding of both ends of the tape piece C is completed, the operation of the pneumatic cylinders 112 and 113 of the tape folding mechanism 110 is released.

Next, the cloth receiver of the sewing machine 200 places the pants G on the lower plate 204.
When the waist of the sewing machine 200 is turned on and a signal is sent from the start switch provided on the sewing machine 200, the pneumatic modifier 151 provided on the transfer mechanism 150 is activated to move the movable bracket 152, and at the same time both folding mechanisms 170, 170 are moved. starts to transfer, and the tape piece C with both ends folded is placed on the plate 11.
5, 124 and is laterally fed toward the sewing machine 200.

At this time, as shown in FIG. 18, the fingers 187, 187 draw trajectories Tl, T2, and T3 and reach the sewing machine 200.

When the tape piece C reaches the sewing machine 200, the fingers 187 at both ends thereof are positioned below the front and rear presser feet 205, 206, as shown in FIG.

Next, the presser feet 205 and 206 are lowered, and the cloth receiver pushes both ends of the tape piece C up against the lower plate 204, so that the tape piece C comes into close contact with the pants.

At this time, the fingers swing downward around the pins 176 degrees 176 of the air cylinders 175, 175.

After both folded ends of the tape piece C are inserted by the front and rear presser feet 205 and 206, the piston rod 151a of the pneumatic cylinder 151 of the transfer mechanism 150 starts to retreat, and the both folded ends of the tape piece C are inserted. The fingers at the top also move back and are pulled out from the fold of the tape strip.

When the retraction of the transfer mechanism 150 is completed, the folding mechanism 17
The piston rods 175a, 175a of the air modifier cylinders 175, 175 of
15, 124, the piston rods 184a, 184a of the air ball cylinders 184, 184 protrude, actuate the racks 185, 185, and the fingers 187, 1
87 is rotated to be ready to receive the next tape M.

Then, while the tape piece C passed on the pants is sewn and hung, the tape M is automatically fed out, and a new tape piece is folded at both ends on the board by the same operation as above. Waits in the state where it is held.

On the other hand, on the cycle sewing machine 200, when the transfer mechanism 150 is retracted, a signal is sent to the sewing machine to start an operation to be described later.

First, the rear presser foot 206 is attached to the needle 202 of the sewing machine head 202.
At position a, suturing of the rear end of tape piece C is started.

This suturing itself is performed using a known cycle sewing machine.

When the sewing of the rear end is completed, press the front and rear presser feet 205°2.
06 is the pants and tape piece C between the cloth receiver and the lower plate 204
By operating the air positive cylinder 218 while pressing the box,
The front presser foot 205 is moved backward, and the front presser foot 205 is
When the position a is reached, the front end of the tape piece C is sewn, and the sewing of the bread loop is completed.

After the sewing is completed, the lower plate 204 of the cloth receiver and the front and rear cloth presser feet 205, 206 move forward, and both presser feet rise to prepare for the next sewing.

Incidentally, if there is a seam in the tape M while it is being fed out by the feeding claw 53, the seam detection mechanism 80 detects this, and at the same time as the feeding is finished, the movable blade 67 is lowered to cut the tape M. Air modilinda-13
7 is activated to push out the push rod 136 and remove the seamed tape piece C.

Thereafter, the piston rod 137a of the air positive cylinder 137 is retracted, and the push rod 136 is returned to its original position.

Then, the movable blade 67 rises and feeds out a new tape M.

Therefore, according to the present invention, by simply inserting the long tape M into the channel-shaped binder 52 by hand, the operator can feed the tape, cut the tape, fold both ends of the tape, and supply it to the waist of pants. , it is possible to automatically perform the sewing machine stitching at two subsequent locations, fold up both ends as shown in Figure 2, and form pandoroops P at the waist of pants G by sewing one location each from the top. It is something.

In addition, in conventional manual pandoroop sewing, it takes about 10 minutes to sew one pandoroop.
However, with the device of the present invention, it only takes about 5 seconds to sew one pandrop, making it about twice as efficient as conventional manual sewing. At the same time, it has the great advantage of being able to be sewn with accurate and uniform dimensions, making it highly applicable to industry.

Further, according to the present invention, the tape receiver has plates 115, 124 and a tape folding tip 11 immediately in front of the tape M feeding mechanism 50.
6 and 120 are provided to directly receive and fix the tape M sent out from the outlet end 52b of the binder 52, the conventional carriage-based transport mechanism for shredded pieces is omitted, and furthermore, the tape receiver is On both sides of the plates 115 and 124, one bent shaft 186 and 186 each having forked fingers 187 and 187 are arranged,
With these two folding shafts, the receiver folds and holds both ends of the tape piece C on the board, and then directly feeds these two folding shafts sideways to the cycle sewing machine 200, so that it is different from the conventional method of folding both ends. The mechanism for picking up and holding the shredded pieces is omitted, and its structure is extremely simple.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of the apparatus of the present invention. FIG. 2 is a perspective view of a pandoroop sewn to the waist of pants. FIG. 3 is a perspective view of the tape delivery mechanism. FIG. 4 is a view seen from the direction of line II in FIG. 3, showing the seam detection mechanism and the movable blade. FIG. 5 is an explanatory diagram showing an example of a control circuit operated by the seam detection mechanism. FIG. 6 is a perspective view showing the main parts of the tape folding mechanism. FIG. 7 is a perspective view showing the main parts of the tape folding mechanism, and shows a state in which the cut tape is held with both ends folded. FIG. 8 is a partially cutaway perspective view showing how the moving bracket provided on the transfer mechanism is attached. FIG. 9 is a front view of the grooved cam. FIG. 10 is a perspective view of the tape folding mechanism. FIG. 11 is a front view of a connecting block provided in the tape folding mechanism. FIG. 12 is an explanatory diagram showing a state in which both ends of a tape piece are folded and held. FIG. 13 is a perspective view showing a movable plate of the sewing machine. FIG. 14 is a sectional view taken along the line ■-■ in FIG. 13. FIG. 15 is a perspective view showing the main parts of the sewing machine. FIG. 16 is a perspective view of the entire front presser foot of the sewing machine. FIG. 17 is an explanatory diagram showing the state of suturing performed by a sewing machine. FIG. 18 is an explanatory diagram showing a trajectory drawn when a folded and held tape piece is conveyed by a folding shaft. FIG. 19 is a perspective view showing a state in which the folded and held tape piece is guided above the sewing machine. In the figure, 115 and 124 are tape receiver plates, and 115b. 124b is a tape support plate, 116 and 120 are tape folding tips, 186 is a bending shaft, 187 is a forked finger of the bending shaft, 200 is a cycle sewing machine, 203 is a sewing plate, and 204 is a fabric supporter. is the lower plate, 204a,
204b is a hole in the lower plate for the cloth holder, 205 and 206 are cloth presser feet, 207 is a cloth feed plate, C is a tape piece, and G is a pair of pants.

Claims (1)

[Claims] 1. Two presser feet 205 and 206 that can be moved integrally with the cloth feed plate 207 of the cycle sewing machine 200 during machine sewing, and that can be moved back and forth with respect to the sewing plate 203 of the cycle sewing machine 200. Presser foot 205
．． The lower plate 204 of the cloth holder, which has holes 204a and 204b formed at positions opposite to 206, is provided on the sewing plate 203 of the cycle sewing machine 200, while vertical contact pieces 115b and 124b are provided on the side of the cycle sewing machine 2000. The equipped tape receiver includes plates 115, 124 and a presser foot tip 1 for holding the tape.
16 and 120 are provided, and the tape holder is connected to the plate 115.
, 124 are arranged independently on both needle sides, and the forked fingers 187, 187 formed at the tips of the two needles are arranged so as to sandwich both ends of the tape piece C. Movable bending shafts 186, 186 are provided, and the tip portions of the bending shafts 186, 186 move forward and backward onto the sewing plate 203 of the cycle sewing machine 200 from both sides of the plates 115, 124. The tape receiver bends both ends of the tape pieces C placed on the plates 115, 124 and connects them to the shafts 186, 186.
After pinching, the tape piece C is folded downward by 180° and held, and then the cloth receiver supplies the folded and held tape piece C to a predetermined position on the waist of the pants G, which is set in advance on the lower plate 204. , After pressing the double-folded ends of the tape piece C with two cloth presser feet 205 and 206, the bending shafts 186 and 186 are pulled out and one folded end of the tape piece C is sewn by a sewing machine, Next, presser foot lower plate 204
The upper pants G and tape piece C are attached to the canvas presser foot 205, 2.
While holding it down with 06, move all of these pieces to tape piece C.
An apparatus for automatically feeding and sewing a formed tape piece for a band for the waist of pants, characterized in that the other folded end of the tape is guided to a position where it is sewn, and then the sewing machine sews the formed tape piece.