JPS6182787A - Sewing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Application in Industry D) This invention provides a sewing machine body including a seam forming means, in which a pallet disposed on a carriage and supporting a workpiece to be sewn is placed in a predetermined position. This invention relates to a sewing machine that performs required sewing by moving according to a sewing program.

(Prior art) Conventionally, as a type C sewing machine, for example,
As shown in Japanese Patent No. 500745, it has been proposed that a device is provided for automatically attaching and exchanging pallets to and from a carriage to simplify the attachment and detachment of sewing objects to and from the pallet.

In this conventional device, the pallet supporting the workpiece after sewing is dropped from the sewing section of the sewing machine main body to a discharge position below it, and the pallet supporting the new workpiece is transferred to the sewing section. Missing sheets are supplied to the sewing processing section from a set position above the pallet, and the pallet is replaced.

(Problems to be Solved by the Invention) However, in this conventional device, when the pallet falls, an impact is applied to the pallet, which may damage the pallet or its replacement device, or damage the workpiece supported by the pallet. There is a problem in that misalignment occurs, and sewing cannot be performed accurately at a predetermined position on the object to be sewn.

Furthermore, in the conventional apparatus described above, the pallet setting position and the discharging position are not located at the same location but are separated from each other in the vertical direction by a large distance, making it impossible to attach and detach the workpiece to and from the pallet at a fixed position. The pallet discharged to the lower discharge position is pulled out, and at another location, the workpiece is removed from the pallet gutter after sewing is completed, and a new workpiece is attached. Hold it up and set it in the set position! There was also the problem that the work was extremely complicated and required a great deal of effort and time.

Structure of the Invention (Means for Solving the Problems) This invention has been made by paying attention to the problems mentioned in BB, and the first invention is the seam forming means 4, 6.
a carriage 13 that movably supports pallets 14A and 14B supporting a workpiece 2o to be sewn according to a predetermined sewing program; Said pallet 14A.

14B, and a number of surfaces 44.59 on which the pallets 14A and 14Tl can be placed, and each surface 44.59 is used as a pallet support of the carry nozzle 13. A second transfer device 42 is provided which is capable of moving r'IJ so as to be selectively substantially opposite to the plane.

Further, in the second invention, in the configuration of the first invention, the second transfer device 42 is provided with a pair of upper and lower surfaces 44.59 for placing the pallets 14Δ, 14B, and each of the surfaces 44.59
The L lower column can be moved back and forth so that it is alternatively almost opposed to the pallet support surface of Carry Two/13, and one surface 5
Palette 9! 4A, 14] 1 is composed of a pair of surfaces on which it can be placed, and the pair of surfaces are
The throat 14A 141tu') is opened outward from the bottom, and when the blood 59 on one side is evacuated, the other surface 44 is opened as the second transfer device 42 moves. A holding device 69 is provided to hold the panels 14A and 14B until they approach or come into contact with 14H.

(Function) In the sewing machine of this investigation, -■ When exchanging the 7f of the berets 14Δ and 14B with respect to the rim 13, an impact of 1% q will be applied to the respective pallet throats 14A and 14B. There is no B at all, and it is pallet 14A.

It is possible to reliably prevent deformation or damage of the pallet 14B or its replacement device, or misalignment of the workpiece 20 supported by the pallets 14A and 14. Further, in the present invention, the pallets 14 and B4B can be discharged and supplied by one of the mounting units B1i59L of the second transfer device 42, and the work of attaching and detaching the workpiece 20 to and from the pallets 14A and 14B is performed. It can be done in a short time without requiring force at a fixed position.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

Now, in the sewing machine of this embodiment, the 2nd degree 3.8
As shown in the figure, a 2-sin main body 2 is installed on the machine base IJ:, and a hen 1-' section 3 is arranged at the rear of the machine 'i''?1.The rear end of the Mino 7 main body 2 A needle 4 is provided in the F part for vertical movement, and a thread ring catcher 6 is provided in the lower part of the bed part 3 to removably store the thread bohino 5 through the hohi and holgu. The needle 4 and the thread loop catcher 6 constitute a stitch forming means. Fig. 8 is a perspective view seen from the front, and Figs. 2 and 3 are perspective views seen from the rear. , the worker is located on the front side in FIG.

/i゛/'i of the machine l at the rear of the Mino 7 main body 2
A pair of support rails 7 extending in parallel in the front-rear direction (Y direction) are arranged and fixed on both sides. A movable frame 9 provided with a guide rail 8 extending in the left and right direction (X direction) per song is supported on the supporting rail 7L so as to be movable in the Y direction.
The rack 10 on the support rail 7 and the gears 12 at both ends of the rotating shaft B on the frame 9 side engage with each other to guide the movement. +'M Transfer mJt frame 9i:
A carriage 13 is supported on the guide rail 8 of , so as to be movable in the X direction, and a pair of pallets 14A, 1
4B is removably supported on the side, and is fixed by a clareb 15.

On one side of the pallets 14A, 141s, a gripping member 16 having a hollow front shape is attached, and as shown in FIG. 1
Detection holes 17A and 17B for identifying 4B are formed at positions shifted in the front-rear direction, respectively. Pallet 14A, 14Rh
The holding frame 18 is attached to the opening/closing function using the hinge 19 +1
It's coming! - With the workpiece 20 placed on the predetermined position on the pallets 14A and 14B and the holding frame 18, the holding frame 18 is closed and the pair of claves 21 are tightened. The object to be sewn 20 can be stretched and held between them.

At the rear of the moving frame 9, an X-direction feed motor 22 is disposed on the machine base th, and as the motor 22 rotates, gears 23, 24, . Via the Subraino shaft 25, a gear (not shown) movable along the Subraino shaft 25, and a rack 26 extending along the rear edge of the Carry Two/13,
The carriage recorder 13 is moved in the X direction, and the pallets 14A and 14B of the carriage tah- are fed in the same direction. Further, a Y-direction feed motor 27 is disposed on the machine base l near the X-direction feed motor 22, and as the motor 27 rotates, the gear 2
8 and the horns protruding rearward of the moving frame 9'/29f
L-fr then-C, move-/ray A9 is moved in the Y direction, and the 14A, 1-1 letter of the 13h is given the same direction I). There is.

Therefore, during this sewing operation, the X-direction and Y-direction feed motors 22 and 27 are rotated according to a predetermined sewing pattern, and the pallet 14 □ on the carriage 13 is rotated.
, 1 and B3 are appropriately moved in the X direction and Y direction on the sewing surface of the throat plate 3 as shown in FIG. A seam is formed on the upper workpiece 20. Furthermore, at the point when the -cycle sewing operation for one workpiece 20 is completed, the X and Y direction feed motors 22 and 27
Based on the rotation of the pallet l-14 on the carriage 13
A and 14B are moved from the sewing surface of the throat plate 3 to a pallet exchange position close to a pallet/throat exchange device 30, which will be described later.

Figure 3: Lj l-system hohino 5 exchanger device with small I
.

Therefore, the configuration of the barre 7 + exchange device δ30 will be explained in detail according to FIG. 1 and FIGS. A piston rod 33 is provided for entry and exit.
can correspond to the gripping members 16 of the pallets 14A, 14B of the carriage 137 moved to the replacement position on substantially the same plane as the sewing surface of the needle 1ti3. A substantially channel-shaped connecting member 34 is fixed at the center of the tip of the piston rod 33, and a pair of guide pieces 35 are attached to the lower surface of both ends thereof.

As shown in FIGS. 5 to 7, a pair of claw members 36 are rotatably supported by a support shaft 37 on the connecting member 347, and the pallet/tower 14A is attached at the tip of the claw members 36.

Engaging with the epoch of the gripping member 16 on 14B from both sides,
Connect the piston rod 33 and pallets 14A and BB1. A pair of substantially gate-shaped regulating plates 38 are attached to one era piece of the connecting member 34 so as to straddle the six claw members 36, and engage with the claw members to restrict the rotation range thereof. A lock 39 for engaging and disengaging is disposed between the three claw members 36 that are in the same position, and the tip of the lock and the tip of the piston rod are connected to each claw member 36 via a connecting body 40 and 41. As a result of the operation of this grip 39, both claw members 36 are rotated to engage and disengage from the gripping members 16 of the pallets 14A and 14B.

As shown in Fig. 4.5.7, an elevating body 42 constituting a second transfer device is disposed in the machine frame 31 between the valet exchange position and the entry/exit norick 32 so as to be movable up and down. A mounting table 45 is supported on the pallet 43 and forms a lower mounting surface 44 for the pallets 14A and 14n. Three guide rods 46 extending in the FY direction are attached to the plate 43 of the elevating body 42 via support arms 47, etc., and are attached to the machine frame 3.
A sliding ITJ is passed through a guide bearing body 48 provided on the top of the lift body 42 to guide the vertical movement of the lift body 42.

An elevating knob 49 is disposed on the machine frame 31 below the elevating body 42, and the tip of a piston rod 50 extending in the L direction is fixed to the frame 43 of the elevating body 42. The elevating body 42 is raised and lowered. A linog 51 is attached to the lower end of each of the guide rods 46 so that its vertical position can be adjusted using a strut rod, and engages with the lower surface of the machine frame 31 or the guide bearing body 48 to regulate one ascending position of the elevating body 42. It is supposed to be done. Additionally, a stopper screw 5 is installed in the machine frame 31 near each guide rod 46.
2 is screwed into the vertical position adjustment oJ function, and engages with an engagement protrusion 53 protruding from the lower surface of the frame 43 of the elevating body 42, thereby regulating the lowering position of the elevating body 42.

'i) 4.5 Figure 7 (, 1 small 1..i -i d. 127's scorching U) corresponding to support Arno = 17 C'
j+' lowering body 420] A pair of support brackets 54 are attached to the frame 437, and a pair of mounting plates 55 are attached to the left and right sides of the support arm 47 and the support bracket/l-54k, respectively. A mounting plate 56 is mounted between the upper ends of each pair of left and right mounting plates 55 at pivot supports 57 on both the left and right sides of the lower mounting surface 44 so as to be located on both the front and rear sides. The pallets 14A and 14B are rotatably supported by a support shaft 58, and pallets 14A and 14B are mounted on their inner stepped portions.
An upper mounting surface 59 for use is formed.

A pair of rotary inverters 60 are rotatably supported on the frame 43L of the elevating body 42 below the mounting plates 56 described in v1f via attachment arms 61, and the tips of a piston and rod 62 extending to the toggles are connected. It is connected to the outer lower surface of each mounting plate 56 via the body 63. And both mounting plates 5
6 is rotated by this printer 60 and one part is placed on the solid line (small ↑) in Fig. 7 of C1 1III59] - (Pallet 1
4A, l41tx,=Parasol l-14A in the loading position as shown by the chain line in the same figure.
, 14B. Further, by raising and lowering the elevating body 42 with the mounting plate 56 placed at the operating position, the upper and lower mounting surfaces 59, 44 are moved to the 0B sword plate 3J:
The pallets 14A, 1 are selectively arranged on the same plane as the sewing surface of the
It is arranged to correspond to the transport direction of 4B.

As shown in FIGS. 4 to 7, support plates 64 are installed on the machine frame 31 on both the left and right sides of the elevating body 42, and the pistons 70 and 33 of the entry/exit sills 2 and 32 are installed or protrude. In this state, the connecting member 34 at the tip thereof is supported on the support plate 64 via the guide piece 35.

A pair of front and rear guide pieces 65 are provided on the L surface of one of the holding plates 64, and the piston rod 33 of the S-said entry/exit nolinter 32 is provided.
The pallet 1 connected to the connecting member 34 by the retracting operation of
When the berets 4A and 14B are transferred from the exchange position to the t-section mounting surface 45 of the elevating body 42, they engage with the front and rear edges of the berets 7l-14A and 14B to guide the transfer. . A pair of front and rear guide plates 66 are disposed on the machine frame 31 so as to face the mounting plate 56 for the elevating body 42 on the inside of both support plates 64. Pallets 14A and 14B placed on 59 and 4Lh
It is designed to engage with both front and rear edges of the front and back sides of the front and back sides of the front and rear sides of the front and back sides of the front and back sides of the front and rear sides of the front and back sides of the front and rear sides of the body to regulate its front and rear positions.

As shown in FIG. 4.5, a rotation shaft 67 is rotatably supported on the lower surface of both support plates 64 via a shaft support 68, and each of the rotation shafts 67 constituting a holding device is provided at an intermediate portion thereof. A pair of holding members 69 are fixed to protrude inward, and a rotating lever 70 is fixed to one end. A pair of rotary levers 1 are rotatably supported on the machine frame 31J via mounting arms 72 in correspondence with the respective rotary levers 70, and the tip of the piston 20 extending in the t direction is attached to the frame 31J. It is coupled to the rotating lever 70 via a coupling body 74.

The holding member 69 is rotated via the rotation lever 70 and the rotation shaft 67 by the operation of the ring 71,
As shown by the chain line in FIG. 4, the pallet 14A of the elevating body 421 protrudes toward the stomach descending body 42 side.

1413, and a retracted position where it is moved away from the holding position to the lower part and outward, as shown by the solid line in the figure. Further, in this embodiment, the mounting plate 56 of the elevating body 42 in the lowered position as described above is rotated to the avoidance position, and the lower mounting surface 59 is spaced apart from the lower surface of the pallets 14A, 14B. From this point until the lower mounting surface 44 on the mounting table 45 approaches or comes into contact with the do surfaces of the pallets 14A, 1413 as the elevating body 42 moves up, the holding member 69 is placed in the holding position. hand,
It is designed to hold pellets 14A and 14B.

As shown in FIGS. 4 and 5, the frame 43 of the elevating body 42
In this case, a pair of detection switches 75A and 75B are attached to the mounting plate 76.
．． 77, and the vertical part of the elevating body 42 is mounted on the same surface 5.
9] When the pallets 14A, 1413 are placed on the second side, it corresponds to the detection holes 17A, 17B of the gripping member 167, so as to identify which pallet 14A, 14B is placed on the second side. .

In addition, 78.79 shown in FIG. 8 indicates a pallet mounting part, and an unsewn pallet 141.14B is placed on either side.
Pallets 14A and 14B after sewing are placed on the other side.

Next, regarding the sewing machine configured as described above, the operation of the pallet changing device 30 will be specifically explained in FIGS. 1(+1) to (()
) will be explained below.

Now, FIG. 1 (al) and FIG. 4 show that the sewing operation of one pallet 14Ah supported by the carriage 13 on the workpiece 20 is completed, and the pallet sole 1-14A is moved from the sewing surface of the throat plate 3 to the origin. The figure shows a state in which the pallet exchanger has been moved to an exchange position close to the pallet exchange device 30 through the pallet exchange position.

In this state, the historod 33 of the inlet/outlet cylinder 32 is in the retracted position, and the claw member 36 of the connecting member 347 is in the released position shown by chain lines in FIG. Further, the elevating body 42 is in the lowered position, and the mounting plate 56 having the lower mounting surface 59 is placed at the mounting position shown by the solid line in FIG.
On F is placed the other pallet 14B on which a new workpiece 20 to be sewn is mounted. Furthermore, at this point, the holding member 69 is placed in the retracted position shown by the solid line in FIG.

In this state, first, the piston rod 33 of the inlet/outlet printer 32 is moved to protrude, and the connecting member 3 at the tip thereof is moved.
4 corresponds to the gripping member 16 of the pallet 14A in the exchange position as shown by the chain line in FIG. After that, the connecting member 3
The engaging/disengaging cylinder 39 on 4 is retracted, and the claw member 36
is rotated to the engagement position where it engages with the gripping member 16 as shown by the solid line in FIG. 6, and the piston 7/rod 33 and pallet 14A are connected. Then, in this state, the piston and rod 33 of the cylinder 32 for taking in and out are retracted, and the pallet 14A is moved from the carriage 18k at the exchange position onto the upper mounting surface 59 of the elevating body 42. after that,
As the locking and disengaging cylinder 39 extends, the claw member 36 is rotated to the release position shown by the chain line in FIG. 6 and released from the gripping member 16. As shown, it is placed on the upper 1 placement surface 59.

In this state, the screw joint 50 of the lifting nozzle 49 is
is projected and the elevating body 42 is raised to the L elevating position,
As shown in FIG. 1(B), the pallet 141'3 placed on the F section placement surface 44 is placed on approximately the same plane as the top surface of the carry saw 13 in the exchange position, and the pallet - The gripping member 16 of the throat 14*3 is arranged correspondingly to the connecting member 34 on the access knob 32. Thereafter, the claw member 36 rotates to the engagement position with the retracting operation of the engaging/disengaging cylinder 39; as a result, the biston rod 33 of the cylinder 32 for insertion and removal and the pallet 14B are connected, and in this state, the biston rod 33 protrudes. Through the operation, the pallet 14B is moved from the lower mounting surface 44 of the elevating body 42 to the replacement position of the carriage 13, and is placed on the carriage 13 as the claw member 36 rotates to the release position. be done.

When a start switch or the like is operated while the pallet 14B placed on the carriage 137 is fixed to the carriage 13 by the clamp 15, the pallet 14B is moved onto the sewing surface of the throat plate 3 according to a predetermined sewing program. By the cooperation of the needle 4 and thread loop catcher 6, a stitch is formed on the workpiece 201ζ on the bullet 14B. Simultaneously with the start of this sewing, the piston rod 33 of the retractable sill 32 is retracted, and the connecting member 34 is placed in the retracted position shown in FIG. 1) and FIG. 4.

Therefore, in this state, the workpiece 20 after sewing is removed from the pallet 1-14A placed on the L portion mounting surface 59 of the elevating body 42, and the new workpiece 20 is attached to the pallet 14A. By C he &1 product 20
It is possible to easily and quickly perform attachment/detachment/replacement work in one place.

Thereafter, when a detachment completion switch (not shown) or the like is operated, the piston rod 50 of the elevating sill 49 is retracted, and the elevating body 42 is lowered to the lowered position and partially placed on the mounting surface 59. The pallet 14A is placed in correspondence with the holding member 69. In this state, the holding member 69 is rotated to the holding position shown by the chain line in FIG. 4 by the protruding operation of the histone rod 73 of the turning groove 71, and is disposed below both sides of the pallet I/IA. By the protruding operation of the piston rod 62 of the rotating sill 60, the pair of mounting plates 56 are rotated to the retracted position shown by chain lines in FIG. 7, and the upper mounting surface 59 is retracted away from the lower surface of the pallet 14A. Ru. As a result, the pallet 14A is moved from above the E section mounting surface 59 to the holding member 69 as shown in FIG. 1(C).
and is held on the holding member 69 thereof.

In this state, the elevating body 42 is raised to the raised position by the protruding operation of the piston rod 50 of the elevating sill 49, and the lower mounting surface 44 of the elevating body 42 is raised as shown in FIG.
is the pallet 14 held by the holding member 69J:
It is placed close to the bottom surface of A.

Thereafter, due to the retracting action of the piston rod 73 of the rotating sill 71, the holding member 69 is moved as shown by the solid line in FIG.
The pallet 14A is transferred from the holding member 69 to the lower mounting surface 44J and placed on the surface 1. From this state, 49 shillings for lifting
By the retraction operation of the piston rod 5θ, the elevating body 42
is lowered to the lower position, and as shown in FIG. , waits for the completion of the sewing operation on the object 20 to be sewn on the pallet 14B.

In addition to the above-mentioned embodiment, the present invention also provides an upper mounting surface 59 in the raised position of the elevating body 42 shown in FIG. 1, for example.
As shown in FIG. 1 ((+), the lifting body 42
The workpiece to be sewn 20 is attached and replaced with the material being lowered to the lowered position, and the holding member 69 is removed by subsequent switch operation, etc.
It is also possible to make any changes and embodiments without departing from the spirit of the invention, such as configuring it to operate in the same manner as in the embodiment described above after the rotation to the holding position is performed. .

Effects of the Invention As described above in detail, the present invention has the advantage that when the pallets 14A, 14n are attached to and replaced with the carry nozzle 13, there is no risk of impact being applied to the pallets 14A, 14H, and the pallets 14. A, 141] and its exchange device from being deformed or damaged, and positional deviation of the sewing object 20 supported by the varnishes h14A and 14I3 can be reliably prevented. Furthermore, in this invention, the pallets 14A, 14B can be discharged and supplied by one of the loading devices i 59 , )- of the second transfer device 42, and the objects to be sewn can be transferred to the pallet throats 14A, 14+1. The attachment and detachment work of 20 parts can be carried out in a short time at a fixed position without requiring any effort.

[Brief explanation of the drawing]

Fig. 1 (+) to -1) is a front view of the road body for explaining the operation of the pallet changing device in a sewing machine embodying the present invention, and Fig. 2 shows the ξ non-body part of the sewing machine. FIG. 3 is a partial perspective view showing a state in which the pallet of the carrier is moved to the bobbin thread changing position after sewing is completed, and FIG. 4 is a partial perspective view showing the structure of the pallet changing device. 5 is a partially reduced sectional view along lines 13- and B in FIG. 4, FIG. 6 is a partial sectional view showing an enlarged connection member portion in FIG. 5, and FIG. 8 is a partially enlarged sectional view taken along the line CC in FIG. 4, and FIG. 8 is a perspective view showing the entire sewing device. In the figure, 2 is a two-horn main body, 4 is a needle, 6 is a thread loop catcher that cooperates with the needle to constitute a seam forming means, and 13 is a carrier.
No'2. 14A and 14B are pallets, 16 is a gripping member,
20 is a sewing object, 22 is an X-direction feed motor, 27 is a Y-direction feed motor, 3o is a pallet exchange device, 32 is an inlet/outlet slot constituting the first transfer device, 34 is a connecting part shrine,
36 is a claw member, 42 is an elevating body constituting the second transfer device, B4 is an upper mounting surface, 45 is a mounting table, 49 is a descending Norinta, 56 is a mounting plate, 59 is an upper mounting surface, Reference numeral 60 denotes a rotating knob, 69 a holding member constituting a holding device, and 71 a rotating knob.

Claims (1)

[Claims] 1. Sewing machine body (2) including seam forming means (4, 6)
a carriage (13) that movably supports a pallet (14A, 14B) supporting a workpiece (20) to be sewn with respect to the sewing machine body (2) according to a predetermined sewing program; For the pallet (14A,
14B); a plurality of surfaces (44, 59) on which the pallets (14A, 14B) can be placed; each surface (44, 59) is a second transfer device (42) movable to be alternatively substantially opposite to the pallet support surface of the carriage (13);
) and a sewing machine. 2 Sewing machine body (2) including seam forming means (4, 6)
a carriage (13) that movably supports a pallet (14A, 14B) supporting a workpiece (20) to be sewn with respect to the sewing machine body (2) according to a predetermined sewing program; For the pallet (14A,
14B); a pair of upper and lower surfaces (44, 59) on which the pallets (14A, 14B) can be placed; , a second transfer device (42) that can be reciprocated in the vertical direction so as to alternatively substantially oppose the pallet support surface of the carriage (13); and one of the second transfer devices (42). The surfaces (59) are a pair of surfaces on which the lower surfaces of both sides of the pallets (14A, 14B) can be placed.
) can be retracted so as to open outward from below, and when the one surface (59) is retracted, as the second transfer device (42) operates, the other surface (44) Until it approaches or comes into contact with the pallet (14A, 14B),
A holding device (
69) A sewing machine comprising: