JPH0770807A - Sewing method using adhesive and sewing machine - Google Patents

Abstract

PURPOSE:To ensure sewing operations to be conducted using an adhesive for an object material by easier method and mechanism. CONSTITUTION:An adhesive is spouted via a nozzle 77 on the joint of an object material inside followed by hot pressing the object externally to accomplish bonding and the objective sewing. The other objective sewing machine is made up of (A) a feeder for object materials, (B) a device to spout the adhesive inside on the joint of the object material on the feeder crosswise relative to the feed direction, and (C) a hot pressing device for the object material spouted with the adhesive.

Description

Detailed Description of the Invention

[0001]

The present invention belongs to the field of sewing machines,
More specifically, the present invention relates to a sewing method and a sewing machine that use an adhesive as a sewing means instead of a sewing thread.

[0002]

2. Description of the Related Art Generally, thread sewing with a sewing machine is generally used for sewing fabrics and the like. However, due to recent developments in the use of adhesives, progress in their use, and widespread use, adhesive containers have been used as adhesives for sewing. A gear-shaped rotor is provided at the lower end of the above (Japanese Utility Model Laid-Open No. 58-38741). The present inventor uses an adhesive to make it closer to a sewing machine using sewing thread than the above, and uses the adhesive to reciprocate the injection needle at the intermediate portion of the joining of the sewn objects and to the joining surface. Japanese Patent Application No. 4-357460 has been filed for a sewing method and device using an adhesive in which the material to be sewn is injected by puncturing and is injected by heating.

[0003]

SUMMARY OF THE INVENTION In the above-mentioned invention, since the injection needle of the adhesive is pierced from the direction of the joint surface to the intermediate portion of the joint of the workpieces,
Even if a bobbin for bobbin thread such as a sewing machine using a sewing thread is not required, a complicated mechanism has to be used. The present inventor was created as a result of various studies and studies to improve the above problems, and the purpose thereof is to sew an adhesive with a simpler method and with a simpler method. It will be done by the mechanism.

[0004]

In order to achieve the above object, in the present invention, instead of coating the adhesive on the joint portion of the material to be sewn with a puncture using an injection needle, a nozzle is joined. The problem is solved by inserting it from the inside of the part. That is, the present invention, as the sewing method using the adhesive, ejects the adhesive from the inside of the joint to the material to be sewn from the nozzle, and after the ejection, pressurizes and heats the material to be sewn from the outside. Adopting a method of adhering, and as a more specific method, the feed dog of the material to be sewn is retracted from the needle plate to cause the nozzle to move in and out from the inside of the joint of the material to be sewn. A method of adhering the material to be sewn from outside by pressurizing and heating the material to be sewn after the squirt is used.As a sewing machine using the adhesive, a material feeding device for adhering the material to be sewn is used. A device for ejecting an adhesive agent with a nozzle from a direction crossing the feeding direction to a joint portion of the material to be sewn on the feeding device, and a device for pressurizing and heating the material to be sewn on which the adhesive agent is ejected Adopt a configuration consisting of As a simple sewing machine, a feed tooth of a sewing material that projects from the needle plate surface by transmission from a power source, a pusher that moves up and down through the material by the protrusion of the feed tooth, and a pusher that lifts the pusher are pushed. Via the lever, the cam that rises against the pressure spring, the nozzle actuating rod that retreats against the pressure spring due to the rise of this cam, and the retracting of the nozzle actuating rod that causes the needle plate and the presser foot to interlock through the connecting rod. And a nozzle of an adhesive that recedes from the bonded portion of the material to be sewn between and.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is to sew a material to be sewn by using a liquid adhesive instead of the conventional sewing thread by sewing. A sewing method using an adhesive of the present invention uses a nozzle instead of a sewing machine needle, an adhesive instead of a sewing thread, and an adhesive from the nozzle inserted from the inside of the joint to the material to be sewn. Is spouted, and then the material to be sewn is pressed and heated from the outer surface to be bonded. The present invention is
The use of adhesive eliminates the need for bobbins, balances, etc., unlike sewing machines that use conventional sewing threads, and does not require bobbin thread winding and threading, and forces (load) through all mechanisms. ) Is not necessary, the mechanism is relatively simple, and the size and weight are small, so the manufacturing cost is low, the amount of energy required for operation is small, and the operation sound is quiet.

Materials to be sewn include cloth, paper, leather, leather, thin rubber, similar to the materials that can be sewn by a conventional sewing machine.
A wide range of materials such as heat-resistant vinyl and nylon are used, and the adhesive is also amino resin or acrylic resin, although it varies depending on the type of material to be sewn. Also, for flexible sewn materials such as cloth, rubber-based adhesives are preferable,
Further, the adhesive base is applied in advance to the joint surface of the cloth or the like, and the solvent is jetted from this with a nozzle to melt the base to make it adhesive, and heat and pressurize this to adhere. It is also possible.

As described above, the sewing method of the present invention is such that the adhesive is jetted from the inside of the joined position of the sewn material by a reciprocating nozzle, and then the sewn material is applied to the outer surface. Although they are sewn by heating under more pressure, there are various problems between the type of material to be sewn and the type of adhesive, which depend on the amount of adhesive, heating temperature, pressure, etc. Therefore, these problems are basically sewn by the above-mentioned method even in the future research and development of adhesives.

An embodiment of a sewing machine for carrying out the sewing method of the present invention will be described with reference to the drawings. FIG. 1 is a vertical cross-sectional view of a sewing machine (A) using an adhesive of the present invention. This sewing machine (A) has an arm-shaped body (a) including a bed having a feed dog mechanism for a material to be sewn on its back surface, and an arm portion of the body (a), which has a presser foot at its lower end. The pressing portion (b) provided with the pressing rod, the sliding portion (c) for operating the nozzle which slides in a direction perpendicular to the pressing rod of the pressing portion (b), and the sliding portion (c). It is composed of a rotatable first joint portion (d) provided at an end portion, and a nozzle portion (e) attached to the end portion of the first joint (d) and ejecting an adhesive.

Regarding the arm type body (a), the arm type body (a) comprises an arm type body main body (1) and a bed (2). A motor (m) is installed on the back side, and a rotary shaft (6) is installed inside the arm type body main body (1) through a pulley (3), a belt (4) and a pulley (5). Power can be transmitted to. A crank portion (7) and a cam portion (8) are formed on the rotating shaft (6). The crank rod (7) has a connecting rod (9) and a cam portion (8). Is a rotating rod (1
0) is abutted with the forked part at the tip,
Reference numeral (11) is a pivot shaft portion of the turning rod (10).

These connecting rod (9) and rotating rod (10)
On the underside of the bed (2) via a link mechanism,
As shown in FIG. 2, the connecting rod (9) that moves up and down has a rotating shaft (1
2) and the rotary rod (10) is linked to the rotary shaft (13). The rotating shaft (12) has a rotating piece (12 '), and the rotating shaft (13) has a rotating piece (1).
3 ') are fixed respectively. In the link (14),
The feed dog (1) for the material to be sewn (B) is provided near the rotary shaft (12).
5) is attached upward, and this connecting rod (1
4) engages the pin (12 ″) of the turning piece (12 ′) with the two-pronged fork part (16) at its end, and the other end of the pin (13 ″) to the turning piece (13 ′). ). By this mechanism, the tooth-feeding (15) moves the rotating piece (1
2 ') and the rotating piece (13') rotate in the direction of the arrow to make an elliptic motion, and the material to be sewn (B) is fed by the protrusion of the tooth feed (15) from the needle plate surface.

Regarding the pressing portion (b), this pressing portion (b)
Is composed of a presser bar (18) penetrating in the vertical direction at the tip of the arm part (17) of the arm-shaped body body (1), and a presser bar (19) installed at the lower end thereof. The pressing rod (18) is provided with an adjusting screw tube (2) for adjusting a pressing force that is screwed into the upper wall (20) of the arm portion (17).
1) is inserted into the lower wall (2) of the arm part (17).
0 '), a cam body (23) whose position can be adjusted by a screw (22) is attached, and a protruding piece (24) is provided on the side opposite to the cam surface (23') of the cam body (23). ) Is integrally formed, and an inclined surface (2
4 ') are formed. A pressing spring (25) is interposed between the cam body (23) and the adjusting screw cylinder (21). At the corner of the lower wall (20 ') of the arm (17), an operating lever (2) for vertically moving the pressing rod (18) is provided.
6) is pivotally supported (27), and its eccentric surface (28)
Is in contact with the inclined surface (24 ') of the protruding piece (24). (29) is the operation knob.

The presser foot (19) described above is composed of a presser foot main body (30) and a connecting piece (37) thereof. As shown in FIG. 4, the presser foot main body (30) has a bottom plate (31) in front view, at both ends thereof, an upward bending portion (32),
It has a boat shape having (32 ′), has a strip shape in a plan view, and has a slanted notch (33) on the right side (the side into which the material to be sewn is inserted), and the bottom plate (31) has an upper surface. , A heater (34) is provided. A pillar (35) is provided at the center of the bottom plate (31), and a cover (36) is provided on the bottom plate (31) so as to cover the heater (34). In order to connect the presser foot body (30) to the presser bar (18), the support piece (35) of the presser foot body (30) has a connecting piece (37) pivotally supported (38). Axis (3
A spring (39) is wound around 8), and one end of the spring (39) extends toward the bent portion (32 ').
0) is in a state in which the bent portion (32) side easily floats. The connecting piece (37) has a guide groove (40) into which the lower end of the pushing rod (18) is inserted and fixed by a screw (41).

Further, as shown in FIG. 2, the wiring (4) for the heater in the arm part (17) of the body body (1) is used.
2) enters the holding rod (18) at the upper part of the lower wall (20 ') of the arm part (17) and connects the lower end connecting piece (37).
Above the connecting part to the plug, the socket (43) at the end of the connecting part is connected to the plug (44) protruding from the cover (36) of the presser foot body (30). The arm portion (17) of the arm-shaped body body (1) is bolted (45), (4) so that the tip end side thereof can be separated from the body body (1) side as shown in FIG.
5), the pressing portion (b) described above and the sliding portion (c) described below, the first rotation.
The joint portion (d) side and the nozzle portion (e) side generally enter the side of the projecting support frame (47) that is separated.

Regarding the sliding portion (c), the sliding portion (c) is composed of a holding rod (18) and a sliding rod (46) which slides horizontally in the left-right direction by the vertical movement of the cam body (23). It is what is done. The sliding rod (46) is provided on the vertical wall (4) of the protruding support frame (47) protruding from the arm portion (17).
8) and (49) are pierced, and at the right end,
A trochanter (50) is provided which contacts the cam surface (23 ') of the cam body (23). Further, between the vertical walls (48) and (49), a slider (51) for preventing rotation of the sliding rod (46) is fixed to the sliding rod (46) with a screw (52). A spring (53) is interposed between 51) and the vertical wall (49). The slider (51) includes side walls (54) of the protruding support frame (47),
(54) is fitted between and guided. A cover (55) is provided on the upper surface between the vertical walls (48) and (49) of the projecting support frame (47).

Regarding the first joint portion (d), as shown in FIGS. 1, 5, and 9, the first joint portion (d) has a grip ring (56) having a notch which is easy to grasp on the peripheral surface.
And a mounting body (57) integrated with the mounting body (57). The mounting body (57) has a through hole (58) through which the sliding rod (46) penetrates. A screw (59) is screwed in from the outer surface of the mounting body (57), and the tip end thereof is fitted into a concave groove (60) provided around a sliding rod (46) penetrating the through hole (58). There is. By this fitting, the mounting body (57) is rotated with respect to the sliding rod (46), but is prevented from coming off when pulled to the left. Screws (5) screwed into the mounting body (57) from the outside
9), the tip end portion (61) thereof is stepped by a spring (62), and as shown in FIG. 7, the groove (60) provided at the sliding rod (46) is provided at both ends of the groove (60). 60) It is adapted to be fitted into the recessed holes (63) and (64) formed deeper than the above. The position shown by the solid line is when the nozzle (e) described later is in the sewing operation state, and the screw (5
The tip portion (61) of 9) is being fitted into the recessed hole (63). Further, when the nozzle portion (e) is in the inactive position of the phantom line, the tip portion (61) has the concave groove (60).
It is to be fitted into the recessed hole (64) through. In such an operation, by grasping the grip ring (56) and rotating it in the direction of the arrow, the tip portion (61) can easily move against the spring (62), and the nozzle portion (e ) Stabilizes at that position.

With respect to the nozzle portion (e), a rotating rod (66) is pivotally supported at the lower end of the connecting piece (65) screwed to the mounting body (57) of the first joint portion (d), A leaf spring (68) fixed by a screw (67) is brought into contact with a connecting piece (65) that restricts the rotation of the leaf spring (68). The adjusting screw (69) penetrating the ring (56) has a rotating rod (6).
It is in contact with 6). The second joint (70) is fixed to the annular groove (71) at the lower end of the rotating rod (66) so that it can be rotated around the rotating rod (66) with a screw (72) from the outside. ing. This second joint (7
No. 0) is provided with a nozzle body (73), which includes a first nozzle portion (74), a second nozzle portion (75),
It comprises a third nozzle part (76) and a tip nozzle part (77).

As shown in FIGS. 10 to 13, the first nozzle part (74) has a second joint (70) at one end.
Is provided with a through hole (78) for connecting with the second nozzle part (75) and the other end is provided with an inner screw (79) for screwing the second nozzle part (75). An opening (80) for inserting (f) is provided, and a pressing member (81) by a spring for pressing the cartridge (f) is internally provided inside. The first nozzle portion (74) has its through hole (78) downward with respect to the second joint (70) by the pivot (78a) and the spring (78b) wound around the pivot (78a). Has been urged. The second nozzle part (75) is of a bent shape and has a fitting part (82) for the cartridge (f) inside thereof at one end and a first nozzle part (74) on the outer surface thereof.
A screw (83) that is screwed into the inner screw (79) is provided, and an inner screw (84) is provided on the other end side. A flow passage (85) is provided between the fitting portion (82) and the inner screw (84) side, and a piercing portion (86) is formed on the fitting portion (82) side of the flow passage (85). Has been done.

The third nozzle portion (76) has a second end on one end side.
There is a screw (87) which is screwed into the inner screw (84) of the nozzle part (75), and a screw thread (90) is provided in the inner cavity (88) through a cushion material (89). And a vibrator (91) is provided inside thereof.
Further, a tapered through hole (93) is provided from the opposite end of the cavity (88) on the side where the cushion material (89) is located to the end (92). This third nozzle part (7
A tip nozzle portion (77) is attached to 6). The tip nozzle part (77) is fitted with a tapered through hole (93) of the third nozzle part (76) and has a tapered projection (9).
4), and an adhesive outflow passage (96) is provided from the protruding portion (94) to the ejection hole (95) at the nozzle-side tip portion formed in a tapered shape.

As shown in FIGS. 14 and 15, an annular flange (97) is provided at the end of the third nozzle portion (76), and an end face side is provided at the end of the tip nozzle portion (77). An annular ridge (99) having an inclined surface (98) is formed on the inner surface. Also, the tapered through hole (93) of the third nozzle (76)
And a tapered protrusion (94) of the tip nozzle part (77) are held in a fitted state, a leaf spring having a bent part (100) at the tip is provided on the outer surface of the third nozzle part (76) side. 10
1) is provided, and a concave groove (102) into which the bent portion (100) of the leaf spring (101) is fitted and locked is provided on the outer surface of the tip nozzle portion (77). This may be another locking means. When it is difficult to remove the tip nozzle part (77) from the third nozzle part (76) when replacing the tip nozzle part (77), use an inclined blade (103) such as pliers to replace the annular flange (97) of the third nozzle part (76). It may be removed by pushing it into the inclined surface (98) between the annular protrusion (99) of the tip nozzle part (77).

The nozzle ejection hole (95) at the tip of the tip nozzle portion (77) may be circular or elliptical in shape, and sometimes the ejection hole (95) faces downward. Sometimes. Attach the cartridge (f) to the first nozzle part (7
4) The cartridge (f) projects into the fitting portion (82) of the second nozzle portion (75) when it is inserted into the inside of the opening (80) and is pressed by a pressing member (81) by a spring. At the piercing part (86), the sealing part is broken and the adhesive flows out, and the cushion material (8) in the third nozzle part (76)
9), through the threaded thread (90), the tip nozzle part (77)
It is ejected from the ejection hole (95) at the tip of the.

As shown in FIGS. 16 and 17, at the position of the presser foot (19), the bed (2) is raised in a mountain shape, and the needle plate (1) is attached to the raised surface (104).
05) is screwed. The needle plate (105) is provided with elongated holes (106) and (106) through which the feed dog (15) for feeding the material to be sewn (B) projects. The heater (10) is internally provided on the lower surface of the needle plate (105) between the elongated holes (106) and (106).
A box (108) having a (7) is fastened with a screw, and a plug (10) protruding from the box (108)
9), the socket (111) of the wiring (110) is inserted. In FIG. 1, an auxiliary bed (2 ′) for supporting the material (B) to be sewn is pivotally mounted on the left side of the bed (2) so as to be opened and closed.

Adhesive sewing by the sewing machine (A) using the adhesive having the above configuration is performed by the operation of each of the following configurations. The feed piece (15), which makes an elliptical motion by the operation of the rotating pieces (12 ′), (13 ′) and the connecting rod (14), projects from the elongated hole (106) of the needle plate (105) and is covered. The sewing material (B) is sent. The upward protrusion of the feed dog (15) from the needle plate (105) causes a presser foot (19), a presser bar (18), and a cam body (23) fixed to the presser foot (19) via the material to be sewn (B). ) Rise. As the cam body (23) rises, the trochanter (50) in contact with the cam surface (23 ') and the sliding rod (46) connected to the trochanter (50) are moved horizontally (to the left) in FIG. Push it. When the first joint portion (d) attached to the sliding rod (46) is moved to the left, the ejection hole (at the tip of the tip nozzle portion (77) in the nozzle portion (e) linked to the first joint portion (d) ( 95) retracts from the sewn portion of the material to be sewn (B). That is, when the feed dog (15) clamps the work (B) with the presser foot (19) and pushes up the work (B), the ejection hole (95) at the tip of the tip nozzle portion (77) causes the material (B) to be sewn. )
It retreats from the sewing part. When the tip nozzle part (77) is retracted, that is, when the material to be sewn (B) is fed, the adhesive ejected in the previous step causes the heater (107) and the presser plate (30) on the lower surface of the needle plate (105). The material to be sewn (B) is adhered by heating with the heater (34) in ().

Next, the feed dog (15) is moved to the needle plate (10
When it is inserted through the long hole (106) of 5),
8), the presser foot (19) descends via the cam body (23) by the pressing spring (25). As the cam body (23) descends, the trochanter (50) that was in contact with the cam surface (23 ') moves to the right along with the sliding rod (46) by the repulsion of the pressing spring (53). By this movement of the sliding rod (46), the nozzle portion (e) and the tip nozzle portion (77) are advanced to the right through the first joint portion (d) attached to the end of the sliding rod (46), The adhesive is ejected from the inside from the ejection hole (95) to the sewn portion of the joining of the two sewn materials of the sewn material (B).
The tip nozzle part (77) advances and retreats from the advancing direction and the cross direction with respect to the material to be sewn (B) and ejects the adhesive. As described above, the operation of the feed dog (15) causes the tip nozzle portion (77) to move forward and backward in the feed direction and the cross direction with respect to the material to be sewn (B) to eject the adhesive. Adhesive sewing is performed, but the width of advance and retreat of the ejection hole (45) of the tip nozzle (77) is about 0.5 to 2.0 mm.

Basic adjustment of the position of the ejection hole (95) The tip nozzle part (77) for the sewn part of the material (B) to be sewn.
The adjustment of the ejection hole (95) of the cam to the p point (Fig. 18) is performed at a position below the pressing rod (18), that is, at a position where the operation knob (29) is lowered, and the screw (2) of the cam body (23)
2) Loosen and lower the presser bar (18) until the presser foot (19) hits the needle plate (105). Since the screw (22) is loose in the cam body (23),
It becomes free in the vertical direction along the presser bar (18). As a result, the cam body (23) is slid through the sliding rod (46) and the nozzle portion (e) so that the ejection hole (95) of the tip nozzle portion (77) is located at the point p. 22) Retighten. Although the position of the cam body (23) is temporarily determined by the above operation, the inclined surface (23 ′) of the cam body (23) and the sliding rod (4
The contact point with the trochanter (50) at the right end of 6) is an inclined surface (23 ').
Is located at the top of the
Loosen the screw (52) of the slider (51) and slide the rod (4
The contact position of the trochanter (50) at the protruding portion of 6) may be adjusted.

Fine adjustment of the position of the ejection hole (95) The tip nozzle part (77) which is mounted on the sewing part of the material (B) to be sewn.
The fine adjustment of the position of the ejection hole (95) is performed in the left-right direction (FIGS. 1 and 5) when viewed from the operator by adjusting the grip ring (56) at the first joint portion (d).
By screwing the adjusting screw (69) penetrating therethrough, the rotary rod (6) with respect to the connecting piece (65) fixed to the mounting body (57).
6), the second joint (70), the nozzle body (73), and the tip nozzle part (77) are moved left and right. Strictly speaking, the locus of the movement of the ejection hole (95) of the tip nozzle portion (77) is an arc, but a horizontal movement of about 2 mm can be regarded as a straight line. As shown in FIG. 9, the adjustment in the front-back direction in FIG. 1 viewed from the operator is performed by the second joint (70).
Loosen the screw (72) at the second joint (7
0) is rotationally adjusted around the annular groove (71) of the rotational rod (66). Also in this case, similarly to the above, strictly speaking, the trajectory of the movement of the ejection hole (95) of the tip nozzle portion (77) is an arc, but a movement of about 2 mm can be regarded as a linear movement. As shown in FIG. 9, the adjustment of the vertical direction (FIGS. 1 and 5) viewed from the operator is such that the nozzle portion (74) has a through hole (78) and a pivot (78a) of the second joint (70). )
And the spring (78b) wound around this, the first nozzle portion (74), and by extension the tip nozzle portion (77) is slightly biased downward, so that the ejection hole ( The position of (95) constantly contacts the sewing position of the material to be sewn (B).

When the work is not performed, the grip ring (56) of the first joint part (d) is gripped with the left hand, and the grip ring (56) is pulled to the left against the spring (53). Separate the ejection hole (95) at the tip of (77) from the sewing part,
By rotating this counterclockwise, the mounting body (5
The screw (59) screwed from the outer surface of (7) has its tip (61) escaped from the recess (63) against the spring (62) and moves in the recess (60) to move the recess (60). Nozzle portion (e) is fitted into the sliding rod (4)
Stop at the same height as 6). When working, the first
When the grip ring (56) of the joint portion (d) is gripped and rotated clockwise, the tip end portion (61) of the screw (59) is
Escapes from the recessed hole (64) and the tip nozzle part (77) reaches the lower working position to maintain the position of the tip ejection hole (95) in a stable state.

When the adhesive cartridge (f) is pushed into the inside of the opening (80) of the first nozzle portion (74), the adhesive cartridge (f) is pressed by the spring-loaded pressing tool (81), and the first nozzle portion (74) is pressed. The cartridge (f) is pushed into the fitting portion (82) of the second nozzle portion (75) screwed by the inner screw (79) of (74) and the screw (83), and the sealing portion of the cartridge (f) is pierced (8).
You can break through in 6). The adhesive that has flowed out passes through the flow passage (85), and the cushion material (89) in the third nozzle portion (76) screwed to the inner screw (84) with the screw (87),
A tip nozzle part which is fitted with a tapered protrusion (94) into a tapered through hole (93) at the end, passing through a cavity (88) having a thread (90) and a vibrator (91). (7
It flows through the outflow passage (96) of 7) and is ejected from the ejection hole (95). At this time, the vibrator (91) in the threaded thread (90) of the cavity (88) vibrates, whereby the adhesive is smoothly ejected from the ejection hole (95). The adhesive ejected onto the sewn portion of the joint of the material to be sewn (B) is the long hole (106) of the needle plate (105) from which the feed dog (15) projects.
The material (B) to be sewn is bonded by being heated by the heater (107) provided between the and (106) and the heater (34) in the presser foot body (30).

FIG. 18 shows the sequence of adhesive sewing when the cloth (L), the presser foot (m) and the nozzle (n) are used to prevent the edges of the cloth (L) from being frayed. (A) In the relationship between the cloth (L) whose edges are folded back in a winding shape, the nozzle (n), and the presser foot (m), the cloth (L) is in a state before entering sewing, and the cloth (L) Are sent in the direction of the arrow (to the left), and the nozzle (n) reciprocates in the direction crossing the nozzle. Point (p) is the intersection of the sewing line (x) and the tip of the nozzle (n), and is the ejection point of the adhesive from the nozzle (n). (B) Manually advance the cloth (L) in the direction of the arrow, lower the presser foot (m), and lay the tip of the nozzle (n) on the lower cloth between the folded joints of the cloth (L). Infiltrate, check the first bonding position, and start the machine. (C) When the machine is started, the cloth (L) moves to the feed dog (15).
Is sent in the direction of the adhesive line (x) in the direction of the arrow, and the nozzle (n) reciprocates in the direction crossing the sending direction of the cloth (L) to eject the adhesive. The sewing line (x) and the depth from the edge (y ₁ ) are shallow. (D) The folding back from the edge of the cloth (L) is (a) to
(C) is larger than that of (c), the sewing line (x) is deeper than the edge (y ₂ ) and the nozzle (n)
The sewing effect is exhibited.

(A) in FIGS. 19, 20, and 21:
(B), (c), (d), and (e) show three states of the start of sewing by the ejection nozzle, during sewing, and rest. FIG. 19
(A) indicates that when the nozzle portion (e) is in the upper resting position, the material to be sewn (B) is operated by operating the operation lever (26).
It is shown that the needle is clamped by the needle plate (105) and the presser foot (19). (B) pulls the grip ring (56) of the first joint (d) to the left with the left hand, and rotates it clockwise so that the tip portion (61) of the locking screw (59). ) Is moved from the recessed hole (63) to the recessed hole (64), and the position of the tip nozzle part (77) of the nozzle part (e) is aligned with the sewn part. The above (a) and (b)
Preparation for the beginning of sewing. 20 (c), the trochanter (50) is brought into contact with the cam body (23) by the action of the spring (53) by releasing the tension of the grip ring (56) by the left hand from (b) of FIG. While contacting, tip nozzle part (7
7 shows a state in which the ejection hole (95) at the tip of 7) faces the sewing position. This completes the preparation for sewing.

In this state, when the motor (m) is started, each part finely moves in the order of ----- to eject the adhesive from the ejection hole (95) and to heat the heater (3).
4) and (107) are bonded. (D) When sewing is completed, the presser foot (15) is operated by operating the operation lever (26).
Shows the state of being raised. 21E, the grip ring 56 is further rotated counterclockwise with the left hand from FIG. 20D, and the tip portion 61 of the locking screw 59 is.
Is inserted into the recessed hole (64) and the nozzle portion (e) is stopped at the horizontal position at the same height as the sliding rod (46). In this state, the sewn object (B) for which the sewing has been completed is removed from the needle plate (105).

[0031]

According to the present invention, since an adhesive is used, the adhesive is ejected from the inside of the joint portion of the sewn object by a nozzle, and then the sewn object is only pressed and heated from the outer surface. The sewing machine can be sewn with, and at that time, unlike a conventional sewing machine, it does not emit much noise. Also, since the sewing machine does not require a bobbin, a balance, etc., unlike a conventional sewing machine, there is no need to wind a bobbin thread or thread a thread, and there are few places where force is applied through the entire mechanism. The overall size and weight can be reduced and the manufacturing cost can be reduced. It can be used as a model in a sewing factory because it is quiet and quiet, and consumes less energy. It is particularly suitable for sewing in places that cannot be seen from the front or in deep, narrow areas such as bags and cylinders. ing.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a sewing machine using an adhesive of the present invention.

FIG. 2 is a vertical sectional side view of a part of the sewing machine according to the present invention.

FIG. 3 is an exploded view of a portion forming a pressing portion.

FIG. 4 is a plan view showing a side surface, a front surface, and a cover of a presser foot portion.

FIG. 5 is a front view in which most of a pressing portion, a sliding portion, a first joint portion, and a nozzle portion are vertically cut.

FIG. 6 is a cross-sectional plan view of a sliding portion in a protruding support frame.

FIG. 7 is a cross-sectional view of a rotation locking portion with respect to a sliding rod of a nozzle portion.

FIG. 8 is a cross-sectional view showing a relationship between a slider and a protruding support frame.

FIG. 9 is a front view showing a relationship between a first joint section and a nozzle section.

FIG. 10A is a sectional view of the first nozzle portion, and FIG. 10B is a plan view thereof.

FIG. 11 is a sectional view of a second nozzle portion.

FIG. 12 is a cross-sectional view of a third nozzle portion and a tip nozzle portion.

FIG. 13 is a sectional view of the cartridge.

FIG. 14 is a front view showing a state in which a tip nozzle portion is fitted in a third nozzle portion.

FIG. 15A is a front view of a main part of a third nozzle section,
(B) is a front view of the tip nozzle portion.

FIG. 16 is a cross-sectional view showing the relationship between the needle plate and the feed dog.

17A is a plan view of the needle plate, FIG. 17B is a front view of the needle plate having a heater attached to the lower surface, and FIG. 17C is a side view thereof.

18 (a), (b), (c), and (d) are principle explanatory diagrams showing the relationship between the cloth, the presser foot, and the nozzle.

19 (a) and 19 (b) are explanatory views showing the sequence of the beginning of the sewing operation.

FIG. 20C is an explanatory diagram during sewing, and FIG. 20D is an explanatory diagram at the end of sewing.

FIG. 21 (e) is an explanatory view showing that the nozzle portion is in a rest state and the material to be sewn is removed after the sewing is completed.

[Explanation of symbols]

 a arm type body b pressing part c sliding part d first joint part e nozzle part f cartridge 1 arm body main body 12 'rotating piece 13' rotating piece 14 connecting rod 15 feed dog 18 presser bar 19 presser bar 21 adjusting screw Cylinder 23 Cam body 24 Projecting piece 26 Operation lever 30 Presser foot body 31 Bottom plate 34 Heater 46 Sliding rod 51 Slider 56 Grip ring 57 Mounting body 59 Screw 60 Recessed groove 61 Tip portion 63 Recessed hole 64 Recessed hole 66 Rotating rod 69 Adjustment Screw 70 Second Joint 74 First Nozzle Part 75 Second Nozzle Part 76 Third Nozzle Part 77 Tip Nozzle Part 95 Ejection Hole 105 Needle Plate 106 Long Hole 107 Heater

Claims (4)

[Claims] 1. An adhesive, characterized in that an adhesive is jetted from a nozzle to a joint portion of a material to be sewn from the inside, and after this jetting, the material to be sewn is pressed and heated from the outside to be adhered. The sewing method used. 2. A feed dog of a material to be sewn is retracted from a needle plate to cause a nozzle to come in and out of a joint portion of the material to be sewn, and an adhesive is ejected from the nozzle. A sewing method using an adhesive, characterized in that a material to be sewn is pressed and heated from the outside to be bonded. 3. A feeding device for a material to be sewn for bonding,
A device for ejecting an adhesive agent with a nozzle from the direction crossing the feed direction to the joint of the material to be sewn on the feeding device, and the material to be sewn from which the adhesive is ejected is heated under pressure. A sewing machine using an adhesive, which comprises a device. 4. A feed dog of a material to be sewn which projects from a throat plate surface by transmission from a power source, a presser foot which is raised and lowered through the sewn material by the projection of the feed dog, and a presser foot for raising the presser foot. A cam that rises against the pressing spring through the holding rod, a nozzle operating rod that retracts against the pressing spring due to the rise of the cam, and a needle that extends through the connecting rod due to the retracting of the operating rod of the nozzle. It is composed of an adhesive nozzle that retracts from the adhesive part of the material to be sewn between the plate and the presser foot, and when the feed dog comes in and out of the needle plate, the adhesive nozzle is used to join the material to be sewn. A sewing machine using an adhesive characterized in that the adhesive is ejected in and out of the machine.