JPS60142887A - Sewing machine of futon - 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 The present invention relates to an industrial sewing machine used to perform stitching such as quilting on futons and the like, and particularly relates to an improvement in its sewing operation mechanism. .

Generally, this type of sewing machine device has a sewing machine head section equipped with a needle, and a sewing machine base section separately equipped with a hook corresponding to the needle, which are mounted on a machine frame in parallel to each other in the left and right direction. a feeding mechanism that guides and supports each of a pair of upper and lower guide members that extend from the guide member, and moves the head portion and the base portion to the left and right in synchronization with each other; A sewing operation mechanism for operating the hooks of the parts in synchronization with each other is provided in the device L, and a support base for supporting an object to be sewn, such as a futon, is provided between the writing head part and the base part. A sewing machine device having such a structure is already known, for example, in Japanese Patent Publication No. 56-8638. In such a sewing machine device, in particular, the sewing operation mechanism moves the separate head section and base section synchronously from side to side along the guide member using a feeding mechanism, and accurately adjusts the needle and hook. It must be able to operate in synchronization with the system, making it extremely mechanically difficult. Regarding this sewing operation mechanism,
In conventional sewing machine devices, as shown in Japanese Patent Publication No. 56-8638, first and second timing belts rotated in synchronization with each other by a single motor are connected to a head portion and a base portion. The first timing belt is fitted with a timing pulley provided on the head section and serves as a rotational force transmission member for needle operation, and the second timing belt is provided with a base portion. It was configured to engage a timing pulley as a rotational force transmission member for needle operation. However,
With such a configuration, the stability and accuracy of the synchronized operation of the hand and hook are still lacking. Moreover, although such a configuration can be applied to a single-head sewing machine device in which only one pair of a head portion and a base portion is mounted on the guide member, it is applicable to a single-head type sewing machine device in which only one pair of a head portion and a base portion is mounted on the guide member. This is a multi-head type machine that can simultaneously sew multiple sewing lines on a workpiece in a desired pattern by synchronizing each pair and moving them freely left and right at the same time. It is difficult to apply it as a sewing operation mechanism of a sewing machine device.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a sewing machine equipped with a sewing operation mechanism having a simple structure that allows stable and accurate synchronization of the needle and hook, whether the sewing machine is of a single-head type or a multi-head type. The gist of its configuration is that its sewing operation mechanism is 1.
First and second rotary drive shafts, which are interlocked and connected to two motors and rotated in synchronization with each other, are respectively disposed parallel to the guide members of the head part and the base part, and actuate the needles provided in the head part. The rotational force transmission member for the first rotary drive shaft is mounted so as to be movable along the first rotational drive shaft and rotatable integrally with the shaft. The rotational force transmitting member is attached to the second rotary drive shaft so as to be movable along the shaft and rotatable integrally with the shaft.

The present invention will be described below with reference to embodiments and the drawings.

The sewing machine shown in FIG. 1 is an embodiment in which a guide member is provided with a plurality of pairs of sewing machine heads and bases to form a multi-head type sewing machine. In this sewing machine device, a pair of left and right machine frames (L), (1'1) are installed at a required interval on a floor surface (G, L).Both machine frames (1).

(1'), a pair of upper and lower guide members (2+
, (31).In some cases, both machine frames (1) and (1') may be installed on both guide parts paulownia (2).
.

(3) can be supported in a cantilever manner so that one side is omitted.

A plurality of (four in the illustrated example) sewing machine heads (5), each equipped with a needle (4), are attached to the upper guide member (2) of both guide parts (2). They are guided and supported so that they can be individually moved in the left and right directions. The lower guide member (3) also has hooks (6) which are separate from the plurality of sewing machine heads (5) and have the same number as the sewing machine heads (5) and correspond to each of the needles (4). )
A plurality of sewing machine base parts (7), each of which is provided with a sewing machine base part (7), are guided and supported along the guide member (3) so as to be individually movable in the left and right direction.

A support stand (8) for supporting an object to be sewn such as a futon is provided between a plurality of sewing machine heads (5) and a base (force) on both machine frames (1) and (1''). .This support stand (8
) is moved relative to the machine frame +L), (1') by an appropriate moving drive device (drawing omitted) along the rail (9) installed on the floor ((), L) and extending in the longitudinal direction. It is designed to be moved back and forth. Note that the relative movement in the longitudinal direction is performed by keeping the support stand (8) stationary and moving the machine frame (1).
It is also possible to implement a configuration in which the 1"l side is moved. Also, the support stand (8) can be moved from the machine frame (1).
, (1') in the left and right directions, or the support surface (8a) of the workpiece on the support stand (8) can be moved within a substantially horizontal plane by an appropriate rotational drive device. It may also be possible to rotate it if necessary.

For a plurality of sewing machine head parts (5) and base parts (7), there is a feeding method in which the corresponding parts are synchronized and individually moved in the left-right direction along the guide members (2) and (3). It is equipped with a mechanism. The feed mechanism C, in this embodiment, connects the machine frame (1) or Each head part (5) is attached to a plurality of screw shafts 01) which are rotatably installed in parallel along the upper guide member (2) corresponding to the plurality of head parts (5). ) are individually screwed together via female thread members (12+), and similarly a plurality of base parts (
A plurality of screw shafts (03) installed in parallel with each other to be freely rotatable along the lower guide member (3) in response to the force are individually screwed into each base part (the force is applied to the screw shafts 03) via the female screw part. In this way, each feed motor 00) is adjusted to the required position with respect to the screw shaft ul) screwed into the corresponding head part (5) and the screw shaft (i3) screwed into the base part (7). Number timing boo U
- (15a) to (15d) and a required number of timing bells (16a) and (16b) connected to each other by a synchronous transmission mechanism.

As a result, the screw shaft circles of the plurality of head parts (5) and the base parts (with corresponding feed motors 00), (431) are guided in precise synchronization by the synchronized forward and reverse rotations. It can be freely moved left and right along the members (21, (3)).

and a plurality of head parts (5) and base parts (for force, these corresponding needles (4) and hooks (6)
The sewing machine is equipped with a sewing operation mechanism that operates synchronously so that the sewing operation is carried out in synchronized manner, and this mechanism has the following construction in particular.

That is, a first rotary drive shaft (17) consisting of a single shaft is disposed parallel to the upper guide member (2) between the machine frames (1) and (1'). Similarly, a second rotary drive shaft (18) consisting of one shaft is disposed parallel to the side guide member (3).The first and second rotary drive shafts (1T) , (18) is the machine frame (1
), the required number of timing pulleys (2, Oa) to (20d) and the required number of timing belts (21a
) and (21b) are interlocked and connected by a synchronous transmission mechanism, and in this way, they are rotated in synchronization with each other by one sewing operation motor α. Keyway-like grooves (17a) and (18a) are formed over almost the entire length of the first and second rotational drive shafts α force and (+ (to), respectively) (see FIGS. 2 and 2). (See Figure 3).Each head (
5) is a rotating shaft consisting of a timing pulley for operating the needle (4), etc., which is held rotatably in a predetermined part of the frame (5a) by thrust bearings t22) and (22) sandwiched from both sides. Force transmission member (23)
This rotational force transmitting member (23) is connected to a shaft hole having a key-like locking protrusion (23a) drilled in the center for locking the force of the first rotational drive shaft U. Projection (23a
) and the groove (17a) to loosely fit the first
(See Fig. 2). Similarly, each base portion (7) has a thrust bearing [1] attached to a predetermined portion of its frame (7a).
，! A rotational force transmission member (25) consisting of a timing pulley for operating the hook (6) is installed so as to be held rotatably from both sides at an angle of 11° (24). The member (25) is fitted with a locking protrusion (25a) and a groove (25a) for attaching the second rotational drive shaft (18) to a shaft hole having a key-like engagement protrusion (25a''l) drilled in the center thereof.
18a) and is loosely fitted to the second rotational drive shaft (I8) (see FIG. 3). In this way, the rotational force transmitting members (23) for operating the needles (4) of each head part (5) are movable along the first rotational drive shaft α7) and are connected to the first rotational drive shaft α7). The rotary force transmitting member (25) for operating each base portion (force hook (6)) is movable along the second rotary drive shaft (18). and is rotatable integrally with the shaft.

In this embodiment, the operation of the needle (4) from the rotational force transmission member (23) in each head part (5) is as follows.
3) is made up of timing pulleys, and then the required number of timing pulleys (26a) to (26C) and the required number of timing bells (27a),
(27b) through a transmission mechanism consisting of
An electromagnetic clutch (28) is interposed in the transmission mechanism so that the operation of the needle (4) from the rotational force transmission unit FJ' (23+) can be interrupted and interrupted at appropriate times. In this embodiment, the rotary force transmitting member (25) is configured with a timing pulley, and the required number of timing pulleys (29a) to (29C"l) are operated from (25) to (29C"l). The required number of timing belts (30a) and (30b)
) and a set of gears (31), and the transmission mechanism includes an electromagnetic clutch (31).
2) from the rotary force transmitting member (25)
This allows the operation of step 6) to be interrupted and interrupted at appropriate times. The corresponding electromagnetic clutches (2g), C, 32) of each head part (5) and base part (7) are electrically connected so that the timing of intermittent operation is synchronized. In addition,
The transmission mechanism for the operation of the needle (4) in each head part (5) described above is also
6) The transmission mechanism for the actuation stop is not limited to using the rotational force transmission member (split or (25) as a timing pulley), for example, it can be made into a gear type mechanism by using gears, or other suitable mechanisms other than those shown in the figures can be used. In addition, the first and second rotational drive axes αη, 0
The grooves (17a) and (18a) of 8) are reversely made into protrusions, and the rotational force transmitting members (231, (25+) protrusions (23a),
(25a) can be reversely made into a groove, or the first and second rotational drive shafts α7) and (+81 can be made into spline shafts and the rotational force transmission section +J (231).

(25) may be attached by spline engagement.

According to the second sewing machine device, an object to be sewn, such as a futon, is supported on a support stand (8), and the support stand (8) and the machine frame (1) are connected to each other.

(1') relative to the rear direction of the AiJ, and the corresponding parts of the plurality of sewing machine heads (5) and base parts (7) are moved by the feeding mechanism to the guide post positions (2+, (
3), the needles (4) and rotary hooks (6) can be moved individually to the left and right in synchronization with each other, and the head (5) and the base (the needles (4) and hooks (6) whose forces correspond to each other) The sewing operation mechanism allows sewing operations to be performed in synchronization with each other.Therefore, a plurality of sewing lines can be applied individually to the workpiece in any desired pattern at the same time. Sewing such as quilting with complicated sewing patterns can be performed easily and efficiently.

In this case, this sewing machine device especially has a sewing operation mechanism.
First and second rotary drive shafts (17) rotated in synchronization with each other by one motor α9).

08) is disposed parallel to the guide member (2+, (3)), and each head portion is movable along the first rotational drive axis α7) and rotatable integrally with the axis. The rotational force transmitting members (23) for operating the needles (4) in (5) are respectively attached, while being movable along the second rotational drive shaft 08) and integral with the shaft. A rotational force transmission member (25) for operating the rotary hook (6) of each base portion (7).
The structure is simple, and the connection between each head part (5) and the base part (which corresponds to the force) is simple.
Example (2) of a guide section using a feeding mechanism.

Mutual synchronized operation of the needle (4) and rotary hook (6), accompanied by synchronized individual free movement along the lines of (3), can be performed smoothly, stably, and extremely accurately. It is something. And each head part (5) and penis part (7)
The electromagnetic clutch (
',! 8) (3) The synchronized intermittent operation of the needle (4) and rotary hook (6) can be individually continued or stopped at will, and can be used depending on the sewing pattern. be able to.

The embodiment described below is of a multi-head type in which a plurality of pairs of head portions (5) and base portions (7) are installed, but according to the present invention, it is possible to reduce the number of pairs of the head portion (5) and base portion (7). No matter how many or how many, the sewing operation mechanism is driven by one motor (11
There is no need to change the configuration in which the two rotational drive shafts 07) and Q8), the first and second rotational drive shafts rotated synchronously by the It can operate stably, accurately and smoothly, and is simply constructed and very rational. According to the present invention, only one pair of the head portion (5) and the base portion (7) may be installed to form a single-head type, and it goes without saying that the same advantages can be obtained in this case as well. is an electromagnetic clutch (28), +
32) is unnecessary and can be omitted.

As described above, the sewing machine device of the present invention is different from conventional sewing machines of this type in particular in the feature of the configuration of the operating mechanism for sewing synchronized operation of the needle and hook in the sewing machine head and base. Concerns with the device include the lack of stability and accuracy in the synchronized operation of the needle and hook in the sewing operation mechanism, and the difficulty of applying it to a multi-head type with multiple pairs of heads and bases. The disadvantage of being difficult to control has been resolved, and the synchronized operation of the needle in the head and the hook in the base can be performed stably, accurately, and smoothly with a simple configuration, regardless of whether it is a head type or a multi-head type. It has become,
It can be provided as an unprecedented and excellent sewing machine device.

[Brief explanation of the drawing]

The drawings show an embodiment of the sewing machine device according to the present invention.
Fig. 1 is a schematic front view of the entire sewing machine device, Fig. 2 is a vertical sectional view of the main components of the sewing machine head of the sewing operating mechanism, and Fig. 3 is a schematic front view of the main components of the sewing machine base of the sewing operating mechanism. FIG. (1) , (1') ・Machine frame +21 , (3) ・Guide member (4) ... - ... Needle (5) ... ... Sewing machine head part 1G) ... -
... Hook (7) Sewing machine base (8) ... Support stand (10) ... Feed motor qsu, 03) ... Screw shaft υ2+, (14) ... Female Screw member (I7)...
...@1 rotational drive shaft (17a)...groove 08) ...2nd rotational drive shaft (18a)...
... Groove (19) ... Sewing operation motor (22) ...
...Thrust bearing (23)...
...Rotational force transmission member (23a) for needle operation...
...Engagement protrusion (2 (a)...Thrust bearing 4...
...Rotational force transmission member for rotary hook operation (25a)
...Engagement protrusion (28+, (3a...Electromagnetic clutch patent applicant)
Konishi Sewing Industry Co., Ltd. Managing Director Kenji Arata (1 other person) Figure 2 Figure 3 Leap

Claims (1)

[Claims] A sewing machine head section equipped with a needle, and a sewing machine base section separate from the head section and equipped with a hook corresponding to the needle, are connected to a pair of "sewing machine heads" provided on the machine frame and extending parallel to each other in the left and right direction. a feeding mechanism that is guided and supported by each of the guide portions and moves the head portion and the base portion to the right side in synchronization with each other along the guide portion; A sewing machine exclusively for futons is equipped with a modern operating mechanism that operates in synchronization with each other. In the Ail marking operation mechanism, first and second rotary drive shafts which are interlocked and connected to one motor and rotated in synchronization with each other are arranged parallel to the guide axis, and the Dfl marking head is connected to the Dfl marking head. A rotational force transmission member for operating the needle provided in the base part is attached to the first rotary drive shaft so as to be movable along the shaft and rotatable integrally with the shaft. A rotary force transmitting member for operating the rotary hook is attached to the second rotary drive shaft so as to be movable by 6 f along the second rotary drive shaft and rotatable integrally with the shaft. Sewing machine equipment for making futons, etc.