JP2775515B2 - Guide device for sewing product in sewing machine for sewing trim cover of vehicle seat - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a guide device for a product to be sewn provided on a sewing machine for sewing a trim cover of a vehicle seat such as an automobile seat (seat).

(Prior Art) As a conventional trim cover for an automobile seat, there is a trim cover for sewing a plurality of fabrics (10), (11), and (12) in a substantially bag shape as shown in FIG.

This is done by first sewing frames (11) and (11) on the left and right sides of the body (10) on the seating side, and then the body (10) and the frame (1).
1) A town (12) is formed on the front edge of (11) by sewing or the like. In the figure, (10a) and (10a) are the body (10) and the frame (11) (1
The sewn portion with (1) and (12a) show the sewn portions of the body (10) and the frame (11) and (11) with respect to the town (12). The above body (10) and frame (11) (11) are both skin (10a) (11a),
The wadding (10b) (11b) and the wadding cover (10c) (11c) are made of foam, and the town (12) is made of a single piece of skin.

As shown in Fig. 8, the body (10), frame (11), (11), and town (12) are sewn together with the terminals of the body (10) aligned as shown in FIG. Sewing is performed along the terminal by seam stitching of the sewing machine. In FIG. 8, (10a) is a seam of a sewing machine for sewing the body (10) and the frame (11) together, (11 ') is a seam allowance for the frame (11), and (11 ") is a seam allowance. The end of (11 '), (12') shows the seam allowance of the town (12), and (12a ') shows the sewing stitches of the body (10) and the frames (11) and (11) for the town (12).

(Problems to be solved by the invention) Sewing of the picture frames (11) and (11) to the body (10),
The body (10) and the frame (11) and (11) are sewn to the town (12) by the body (10) and the frame (11) (1
1) The town (12) is sewn in a straight line with a sewing machine so that the surface of the town (12) faces each other and the terminals are aligned so that the seams of the sewing machine do not meander. Then, the meandering of the seam of the sewing machine can be prevented by fixing a guide for joining and guiding the terminal end face of the product to be sewn in the vicinity of the sewing needle, or, when the guide is not used, by a skilled worker. It is done by intuition.

However, for example, the body (1)
0), when sewing the frame (11) (11), the end (10 ″) of the body (10) and the seam allowance (11 ′) of the frame (11) (11)
(11 ″) protrudes outward to form a protruding object. Also, when a ball (not shown) for sheet decoration is sewn to the seam of the body (10) and the frame (11) (11) The end of the bead in the length direction is the town (12) and body (1
0), the frame (11) is a protrusion protruding outward from the terminal with (11).

Therefore, in the case where the guide is fixed to the sewing machine, it is difficult to sew the laminate of the sewing product having the protrusion in the sewing machine because the protrusion abuts on the guide.

Then, an object of the present invention is to enable a sewing product having a protrusion from a part of a terminal to be accurately and linearly sewn with a sewing machine.

(Means for Solving the Problems) A guide device for a product to be sewn in a sewing machine for sewing a trim cover of a vehicle seat according to the present invention for achieving the above object is provided with a terminal for a product to be sewn comprising a plurality of fabrics. A trim cover sewing product sewing machine for a vehicle seat, wherein the guide pieces are joined to a terminal end face of the sewn product, and the guide pieces are joined to the sewn product. And a movable mechanism that is movable in the detaching direction with respect to.

The above-mentioned movable mechanism has a structure in which the guide piece is moved in the vertical direction by the driving force of the motor and is joined to the end face of the sewing product in the lower position, or the guide piece is driven horizontally by hydraulic pressure or the like. Use is made of a structure that can be freely moved toward and away from the terminal end face of the sewing product by force.

The above-described operation of the movable mechanism may be performed manually.However, a sensor is provided near the sewing needle of the sewing machine. It is preferable that the guide piece is moved in the detaching direction from the sewn product by sensing the movement of the workpiece.

It is desirable that the movable mechanism be movably mounted on a table board or the like of the sewing machine so that the sewing allowance of the sewing product can be adjusted.

(Function) Since the laminated product to be sewn is sewn with a sewing machine while the end face of the sewn product is joined to the guide piece, the sewn product is sewn so as to be accurate and to have a certain width of seam allowance. When the sewing machine has advanced to the vicinity of the protruding object from the terminal end surface of the sewn product, operate the movable mechanism to quickly separate the guide piece from the terminal end surface of the sewn product and pass the protruding object. After the guide piece is detached from the product to be sewn, the movable piece is operated again to join the guide piece to the terminal end face and sewing is performed.

Therefore, except for the portion near the protruding object in the sewing product,
The sewn product is guided by the guide pieces and sewn without meandering linearly.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. The drawings show the sewing of the body (10) and the sewn portion (12a) of the frames (11) and (11) with respect to the town (12) in FIG.

FIGS. 1 to 3A, B and C show a first embodiment of the present invention. In this embodiment, the guide piece (2) is turned up and down by a movable mechanism (A). Guide piece (2)
Are configured to be able to freely contact and separate from the terminal end faces (13) of the sewn products (10) and (12).

The movable mechanism (A) has a guide piece (2) integrally at a lower end, an arm (31) having an upper end pivotally connected thereto, a drive shaft (32) of a motor (M), and a drive shaft (32). A bracket (not shown) fixed to (32), a link (33) connecting the arm (33), an operating unit (30) for forward and reverse rotation of the motor (M), and the arm (31) And a mounting bracket (34) for mounting the motor (M) and the like to the sewing machine body (40).

When the motor (M) pushes the operation part (30), it rotates forward and the guide piece (2) rotates in the direction of the arrow from the state shown in FIG. 1 via the link (33) and the arm (31). Then, as shown in the chain line in FIG.
2) Remove from the terminal end face (13), and again
0), the guide piece (2) is rotated in the reverse direction and descends to be joined to the end face (13) of the sewing product (10) (12) as shown in FIG. ing.

The above mounting bracket (34) is attached to the sewing machine body (4
0) is attached so as to be movable in the horizontal direction so that the width of the seam allowance (12 ') of the sewing products (10) and (12) can be adjusted. In FIG. 1, (12a ') indicates a sewing seam, (41) indicates a sewing needle, and (42) indicates a table board of the sewing machine.

FIGS. 3A, 3B and 3C show a sewing product (1) having a protrusion (10 ') on a terminal end face (13) using the movable mechanism (A).
0) The sewing method with the sewing machine of (12) is shown.

First, the sewing product (10) is placed on the table board (42) of the sewing machine.
Align the terminal end faces (13) of (12) and
3) is brought into contact with the guide piece (2) and joined. that time,
The seam allowance (12 ') for the products to be sewn (10) and (12) must be set in advance so that the mounting bracket (3
Set the mounting position for the sewing machine body (40) in 4).

After that, the sewing operation of the sewing products (10) and (12) is started. The sewn products (10) and (12) are sewn along the guide piece (2) while being fed in the direction of the arrow by a feed dog of a sewing machine or the like (FIG. 3A).

Then, when the protruding object (10 ') protruding from the end face (13) of the sewn products (10) (12) approaches the guide piece (2),
The operation unit (30) is pushed. The motor (M) is driven by the pushing movement of the operating portion (30), and the guide piece (2) is operated via the link (33) and the arm (31) as shown in FIG. 3B. That is, the guide piece (2) is the sewing product (10).
It moves upward away from the terminal end face (13) of (12). When the sewing operation with the sewing machine is continued, the sewing product (1
0) The protrusion (10 ') of (12) moves forward (in the direction of the arrow) from the position where the guide piece (2) was. Next, when the operation unit (30) is pushed again, the motor (M) is driven to move the guide piece (2) downward, and the sewing products (10) (12)
To the end face (13) of Therefore, the sewing product (1
0) and (12) are sewn while being guided by the guide pieces (2) again, and the sewing operation is completed.

3A, 3B, and 3C, a sensor (35) is provided on the side of the sewing machine main body (40), and the protrusion (10 ') attempts to contact the guide piece (2) by the sensor (35). In this case, the motor (M) is sensed and the motor (M) is driven to release the guide piece (2) from the end face (13) of the sewing product (10) (12), and the sewing product (10) (12). When the sewing of the sewn products (10) and (12) is completed to a position where the protruding object (10 ') does not contact the sensor (35), the sensor (35) detects this and drives the motor (M). Guide piece (2) is sewn to product (10) (1
It is configured to be joined to the end face of 2).

FIGS. 4 to 6A, B and C show a second embodiment of the present invention, in which a guide piece (2) is mounted so as to be movable in the horizontal direction by hydraulic (or pneumatic) pressure. The movable mechanism (B) is provided on a table board (42) of a sewing machine.

The movable mechanism (B) includes a piston rod (37) integrally connected to the guide piece (2) and a piston rod (3).
7) The cylinder (36) that expands and contracts, and the plate (3) on which these are placed and fixed on the table board (42) of the sewing machine
5 ′) and the operation part (3
0). The bearing (39) of the piston rod (37) is attached to the plate (35 ') so as to be movable in the direction of expansion and contraction of the piston rod (37). In the figure, reference numeral (38) denotes a scale plate provided on the plate (35 ').
5, the piston rod (37) and the cylinder (36) are moved and adjusted in the direction of the arrow in FIG. 5 to appropriately adjust the width of the seam allowance (12 ') of the sewing products (12) (10).

The piston rod (37) is extended by pushing the operating part (30) to join the guide piece (2) to the end face (13) of the sewing product (12) (10). When the operation part (30) is pushed again, the piston rod (37) contracts into the cylinder (36) and is separated from the end face (13).

The operation section (30) has a structure to be manually operated. As shown in FIGS. 4 and 6A, 6B and 6C, a sensor (35) is provided on the sewing machine main body (40), and the sewing product ( Ten)
When the protruding portion (10 ') of (12) tries to contact the guide piece (2), it senses this and the piston rod (37) contracts, so that the guide piece (2) comes into contact with the protruding object (10'). When there is no danger, the sensor (35) senses this and extends the piston rod (37), and the sewing product (10) (1)
A structure having a structure in which the guide piece (2) is joined to the end face (13) of (2) may be used.

6A, 6B and 6C show a case where the movable mechanism (B) is operated by using the sensor (35) to sew the sewn products (10) and (12). Guide piece (2)
Then, the end faces (13) of the products (10) and (12) to be sewn are joined, and the sewing operation is started by the sewing machine while feeding in the direction of the arrow (FIG. 6A). Then, the sewing operation of the sewn products (10) and (12) proceeds, and the protruding object (10 ') of the sewn products (10) and (12) approaches the guide piece (2), as shown in FIG. 6B. As described above, the sensor (35) detects this, and expands and contracts the piston rod (37) to separate the guide piece (2) from the end face (13). And the sewing of the sewn products (10) (12) continues,
When the protrusion (10 ') passes from the position where the guide piece (2) faces, the sensor (35) detects it and extends the piston rod (37) so that the guide piece (2) is re-sewn to the sewing product ( 10) Join the end face (13) of (12). With the joining of the guide pieces (2), the sewing products (10) and (12) are sewn while being guided by the guide pieces (2), and the sewing work is completed. 6A, B, C
The same reference numerals as those in FIGS. A, B, and C denote the same members.

(Effect) Since the guide device for the product to be sewn in the trim cover sewing machine for a vehicle seat according to the present invention is configured as described above, the protrusion protrudes outward from the seam allowance which is the terminal end surface of the product to be sewn. Is sewn with a sewing machine while being guided by the guide pieces. Therefore, the stitches of the sewing machine are straightened without meandering, and the seam allowance is always constant, so that the trim cover can be accurately sewn and the occurrence of defective products can be prevented. Moreover,
Since the sewn product is sewn while being guided by the guide pieces,
The workability of the sewing work can also be improved.

In addition, by keeping the guide piece detached from the product to be sewn, curve sewing of the product to be sewn or the like can be performed with the apparatus attached to the sewing machine main body.

Further, since this device has a simple structure, it can be easily attached to and detached from the sewing machine main body.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 3A, B and C show a first embodiment of the present invention, FIG. 1 is a perspective view thereof, FIG. 3A, 3B, and 3C are explanatory diagrams for sequentially explaining the same use state, FIGS. 4 to 6A, 3B, and 3C show a second embodiment of the present invention, and FIG. FIG. 5 is a perspective view of the essential part, FIG. 6 is an explanatory view for explaining the use state in order, FIG. 7 is a partially cutaway perspective view of the trim cover, and FIG. 8 is VI in FIG.
FIG. 8 is a sectional view taken along line II-VIII. In the figures, (A) and (B) are movable mechanisms, (2) is a guide piece,
(10) and (12) show sewing products.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) D05B 1/00-83/00

Claims (1)

(57) [Claims] 1. A sewing machine for a trim cover sewing product for a vehicle seat, wherein terminals of sewing products made of a plurality of fabrics are aligned and laminated, and are integrally sewn with a sewing machine along the terminals. A guide device for a sewn product in a sewing machine for sewing a trim cover of a vehicle seat, comprising: a guide piece joined to a terminal end surface; and a movable mechanism for moving the guide piece in a detaching direction with respect to the sewn product. .