JPS6060891A - Multi-purpose sewing machine of flat or shaped member - 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 the field of industrial machines used for sewing parts of various materials, for example shoes or components of leather products. In particular, the present invention is characterized in that, at the same time as sewing a flat member,
The present invention relates to a new type of dual-purpose sewing machine that is capable of fixing a closed shaped member onto a flat member by sewing.

For sewing two or more parts, for example, in particular components of shoes or leather products, the work table should be equipped with two axes
, is connected to carry, which moves according to Y,
It is also known that industrial sewing machines are used in which a workpiece to be sewn is supported by a mechanical device.

For flat stitching, ie, sewing flat parts in the strict sense, so-called flat stitch sewing machines are used, in which the sewing table rests against a base frame without a bed. Conversely, in order to carry out stitching of a shaped part, for example the fixing of the belly skin to the upper of a shoe (a process called "upper stitching"), the cuff-arm or table is used to sew the shaped part. The so-called single gun barrel is positioned above the working surface using a support bed, making use of the free space for
A triple feed type sewing machine is used.

Therefore, in order to sew flat parts and shaped parts, workers have to use the above two types of sewing machines, and for this reason, they are forced to make a considerable investment in machines whose frequency of use is not very high. will be done.

The present invention utilizes a single type of sewing machine, can transition from a flat stitch type to a closed shape stitch type in minutes by skillful application, and is versatile in its application while utilizing a large working surface. Get the power! By proposing a new automatic sewing mechanism that can do this, we aim to significantly reduce these investments.

The novel dual-purpose sewing mechanism according to the invention comprises a sewing machine with a "barrel" shaped arm, combined with a known type of carriage for movement in the X and Y directions, with several modifications made by the addition of the following measures: The main feature is a) means for attaching a device for supporting and fixing the clip device inside this barrel-shaped arm by inserting it in advance on the X, Y direction movable carriage on the axis of the arm; b) attaching the machine at the same time as the material to be sewn; Means for obtaining automatic sewing that simply moves the workpiece without movement; C) Means for enabling movement of the machine relative to the work surface in order to transition from plain stitching to shape stitching; d) +Ir1 machine. means for directly integrally fixing the drive motor; e) a working table adapter for rapid transition from one sewing system to another;

Means a) is such that the L-shaped part at the tip is fixed to the carriage for movement in the X and Y directions, and the elongated part is therefore provided with an opening for passing the leg-like valve member and the sewing machine needle by means of a locking knob member. It is configured to receive an upper sewing clip device having a plurality of seven laps mounted on the carriage and holding down the article to be sewn.

According to measure b), the mechanical parts of the "gun-barrel" sewing machine are capable of moving back and forth in known types of sewing operations, and these mechanical parts can be moved up and down in various ways in the movement of the workpiece to be sewn. Immobilized and transformed to accommodate movement. Unfortunately, instead of a vertical movement, the needle has a simple top-to-bottom movement (or vice versa), as will be explained later; (which plays the role of a shape correction member).

According to another feature of the invention (measure c), the machine slides in the guide rail of the carriage in order to transfer from one sewing position (for example flat stitching) to another sewing position (for example for shaped parts). with diagonally placed screws and fixing points,
It can be moved instantly by installing it on a bed with two fixed positions, front and rear.

According to another characteristic of the invention, the drive motor of the machine, instead of being mounted in a known manner on the pace frame of the machine,
directly and integrally fixed to the machine (means d); Furthermore, a removable working table which can be exchanged in an instant is installed on the adapter for either of the above-mentioned stitching methods (flat stitching or shape stitching).

Hereinafter, a specific example of the multi-purpose sewing machine of the present invention will be described in detail with reference to the accompanying drawings.

As is clear from the fish tank member in FIG.
44 &: 1. Standard type clip device 3 attached to pace frame 1 for horizontal stitching or sewing of the torso to the upper of shoes 6 is an improvement attached to adapter 5 in the case of shape stitching. The shaped clip device is fixed and
, a well-known movable carriage 2 that moves in the Y direction, and a second position 1f at position A for sewing flat members and position B for sewing shaped members such as when fixing various parts of shoes to the upper. It consists of a so-called sewing machine 7 in the form of a 6-barreled machine with a bed plate mounted on a guide rail 8 which can be fixed to the machine.The drive motor 9 is fixed directly to the machine.

FIG. 2 more clearly illustrates the type of adapter used in the sewing mechanism for sewing shaped parts.

This adapter 5 is fixed by an L-shaped part onto a carriage 2 with an XY movement axis. This adapter 5 is for receiving the flaps of the clipping device 4 together with the automatic control device for supporting the parts to be sewn together.

The clip device or flap is primarily contoured and notched for identification with the adapter;
Furthermore, there is a pace plate 10 whose opening degree is determined according to the contour to be sewn, which allows the passage of the sewing machine needle and the leg-like correction member, and a pace plate 10 that is mounted on independent hinges 12 and 13 and allows the leg-like valve member to pass through. The upper fastening comprises a flap 11 and an intermediate flap 14 fixed to the hinge 15 and cut out to the shape of the part to be reliably centered.

The mechanical coupling of the various pneumatic devices between the adapter and the flap device is provided by male ball joints identified on the flap and female ball joints 19, 20.21 fixed on the tips of the jacks 22, 23.24. is executed. These ball joints can be easily removed using crank levers 25, 26 and 27. The clip device 4 is attached to the center positioning bin 3
0,31,32 are secured within the adapter by means of a knob member 28 which engages a guide rail 29 sliding inside.

At the bottom of this sewing mechanism there are 3
A pedal (not shown) is provided to fulfill the two functions. That is, in the first stage, a first impact closes the intermediate flap 14, and then a second impact on the same pedal reopens this intermediate flap and, if necessary, corrects the working position. can. In a second stage, the upper clamping, which clamps the entire sewing material by an impact on the second tilting device in contact with the pedal, can close the flap 11, leaving the possibility of reopening by a second impact. In the third stage, for upper leather sewing work, the third ramp device starts stitching.

3 and 4, there is shown a plain stitch station t (FIG. 3) with a clip device 3 of known type fixed to a movable carriage 2, and a clip device shown in detail in FIG. 4
The position for shape stitching controlled by an adapter 5 of suitable construction is shown very schematically. Both figures show removable wooden tables 33, 34i which can each be mounted according to two sewing methods. Generally, when it is desired to change the sewing method, for example, with the same sewing mechanism of the present invention, the operation is very quick and does not take more than a few minutes. These operations include replacing the wooden table 33, 34, retracting the machine from position B to position A (see Figure 1), replacing the adapter 5 and the adapter with a flat stitching table 3 of known type, and replacing the flap for the clip. 4, which will be explained later.

As mentioned above, a sewing machine, for example, a one-barrel type (
Also, it is a feed type (I'f, 3'lU feed type), but it was not intended to be an automatic sewing machine from the beginning. Therefore, as shown in Figure 5,
The known sewing machine 35 is characterized by three basic movements, namely a pendulum movement of the button 36, an accompanying movement of the leg-shaped presser member 37, and a reciprocating movement of the pawl member 38.

According to a feature of the invention, these mechanical components have been modified in such a way that automatic sewing is achieved without the work being sewn being moved simultaneously with the sewing mechanism of the sewing machine, as in the case of FIG. According to the application example of these mechanical parts shown in FIGS. 6 and 7, the needle 36 has a simple up and down movement. The upper leg-like presser member 37 is not a concomitant movement, but a jumping discontinuous movement T.
Do ljJJ.

Finally, the pawl member 38 allows the needle to move inside and continue the sewing operation while acting as a foot-like compensator in the raised position.
It is replaced by a chute member 39 that adjusts the position. Therefore, this chute member performs a reciprocating movement of the pawl member between the needle 36 and the upper leg-like presser foot 37]! l! Performs simple vertical movement in synchronization with movement. This chute member 39
Furthermore, when the needle enters the object to be sewn, its reciprocating motion also serves to correct the thickness of the flap plate 10 by forcing it against the clip-clamp mechanism that supports the object to be sewn. When the needle is raised from the sewing position, the leg stop It 391d is lowered again to facilitate feeding.

These adapter devices allow for fast and precise sewing operations. Furthermore, the sewing work is automated. The correction chute 39 can be fixed in certain cases, for example at the upper and lower points of the stitch. This chute member is normally retracted except when the clipping device performs its return stroke.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main structure of the composite stitch mechanism of the present invention, FIG. 2 is a detailed view of the stitch sewing flap of the shaped member, that is, the upper skin clamp, and the installation of the special sewing adapter.
Figures 3 and 4 are schematic sectional views showing variations of the machine of the present invention for plain stitching and shape stitching, respectively, and Figure 5 is a schematic diagram of a "gun barrel" type machine that simply shows the operation of the sewing mechanism. , FIG.
FIG. 7 is an enlarged schematic front view of the sewing machine head of FIG. 6 improved in accordance with the present invention; DESCRIPTION OF SYMBOLS 1... Pace frame, 2... Moving carriage, 3°4.5... Adapter, 6... Sewing object, 7... Arm, 8... Guy P rail, 9... Drive motor, 1
0,11゜l4...Flap group, 1:i! , 13.1
5... Hinge, 16°17, 18, 19, 20.21
...Ball joint, 22.23.24...Jatsugi, 25
, 26.27... Crank lever, 28'''/1 part, 29... Guy y v -#, 30.31.32
...Center positioning bin. Representative Patent Attorney Hajime Imamura

Claims (1)

[Claims] (1) From sewing flat members to sewing closed-shaped members (-1,
In multi-purpose sewing machines that can automatically transfer to
, in combination with a known type of carriage for performing movement in the y direction, by the following means: a) on the moving carriage in the X and Y directions;
Ky, a device u for supporting and fixing the clip device inside the barrel-shaped arm by inserting it in advance on the axis of the arm;
b) Means for obtaining automatic sewing that simply moves the workpiece without moving the machine simultaneously with the workpiece; C) Means for achieving automatic sewing that simply moves the workpiece without moving the machine at the same time as the workpiece; C) Measures against the work surface in order to transition from plain stitching to shape sewing. d) means for directly and integrally fixing said machine with its motion motor; e) a working table for rapid transition from one sewing mode to another; A sewing machine comprising a "barrel-shaped (or triple moving) arm which is corrected by coupling an adapter. (Means a) for achieving coupling with a carriage moving in the X and Y directions is a hinge for receiving and fixing a clipping device 6' consisting of a pair of flaps connected to the adapter in a pneumatically controlled manner by means of a pair of ball and socket joints connected to each other and mounted on a jack provided with a crunflare gouge. The sewing machine according to claim 1, wherein the sewing machine is constituted by a ruler-shaped adapter, and the opening and closing of these various flaps are controlled by a pedal having three supporting contacts. This is accomplished by modifying the mechanical part of the arm so that it no longer involves a leaping upper leg-like retaining member, but instead enters with an up-and-down movement into the interior of a vertically interlocking or fixed chute member, which acts as a leg-like compensator. The sewing machine according to claim 2 or 3. (4) The means C) is attached to a guide rail that allows the sewing machine to move from the sewing position of the shaped member to the sewing position of the flat part moon. The sewing machine according to any one of claims 1 to 3, which is constituted by a bed made of a carpet. 5. The sewing machine according to claim 1, further comprising a detachable table provided on the work surface for transitioning from one sewing method to another sewing method.