JPS6048194B2 - Progressive feeding method of fabric to be sewn in sewing process - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for accurately permuting fabrics to be sewn in a sewing process in which a large number of fabrics to be sewn are cut into a desired shape and flown in order of process, such as in the mass production process of suits. The present invention relates to a method for progressively feeding a cloth to be sewn to flow between processes.

Conventionally, the mass production process for, for example, a suit jacket is divided into about 80 processes, in which the fabric to be sewn is cut into a desired shape and size and flowed in the order of the processes to be finished.

The construction methods can be categorized into the following three types. In other words, a rod method is used in which approximately 1 to 2 units of fabric to be sewn is stored in a basket or the like and moved between processes, and a set of fabrics to be sewn by one person is hung on a hanger, and a trolley conveyor or the like is used to move the fabric through the process. There is a hanger method in which garments are flown between processes, and another type is a sink method in which each garment is manually fed over a sink that connects the processes. However, the above-mentioned rod method naturally requires a flow rate (in-process amount) from a production management perspective.
As the flow time increases, the flow time (the time required from the start of the first process to the completion of the final process) becomes longer, which significantly reduces productivity.Furthermore, as with recent easy-to-order products, the fabric It has the disadvantage that it is not suitable for mass production methods where each manufacturer has one specification because of different dimensions and shapes. In addition, the above-mentioned hanger method requires the work of removing and attaching the fabric to the hanger, which requires the work of converting the three-dimensional fabric to be sewn into a flat position, resulting in poor workability. There are disadvantages such as stretching and falling. moreover,
Misunderstanding when attaching a hanger causes problems in the hanging order, which confuses the one-party specification system and causes process troubles. Furthermore, since the above-mentioned sink system requires manual feeding between processes, there is a lot of unnecessary incidental work, resulting in poor work efficiency, and there is a risk of confusion in the one-piece, one-piece specification system due to order errors. be. The present invention has been made in view of the above-mentioned circumstances, and it is possible to flow the fabric to be sewn extremely accurately between processes based on a predetermined permutation in the sewing process, thereby enabling a complete one-piece one-specification system. Another purpose is to omit incidental operations in the sewing process as much as possible, thereby significantly improving production efficiency.

That is, in the sewing process in which the fabric to be sewn cut to a predetermined shape and size is transported and processed in the order of steps, the fabric to be sewn is stretched out onto a horizontal plate-like movable pallet for each required garment. Then, the fabric to be sewn on the movable pallet is loaded onto a horizontal plate-shaped fixed pallet provided in the next process by a transfer mechanism constructed by an appropriate means. It is characterized by a progressive feeding method in which the fabrics to be sewn are transferred to the lowest part of the group of fabrics to be sewn, and the fabrics to be sewn are accurately transferred from one process to another according to a predetermined permutation.

Embodiments will be described in detail below with reference to drawings.

In Figs. 1 to 3 showing one embodiment, Fig. 1 shows a plane of a part of the middle part of the process of sewing a suit jacket according to the method of the present invention, and 1A1B shows the whole process consisting of about 80 steps. There are adjacent individual sewing steps in the line. and,
Process 1A1B includes a moving pallet 2A2B2C for moving the fabric to be sewn (hereinafter referred to as work) between processes, and workpieces are transferred from the moving pallet 2A2B and stacked in order from below. A fixed pallet 3A3B is provided. That is, the movable pallet 2A2B is formed into a rectangular plate-like body in a horizontal state on which a work piece of a suit jacket can be stretched and placed, and the front part has notches 5 cut out in the shape of deep grooves at intervals. Several are formed. And 3, moving pallet 2
B starts at position 2B'' near the worker 8A in the previous process with a workpiece that has completed the required processing, and stops at position 2B'' in front of the fixed pallet 3B in the next process 1B.
As the workpieces placed on the plate are removed from the transfer conveyor 4 by a transfer mechanism to be described later, they are transferred to the fixed pallet 3.
It is transferred to the bottom of the group of workpieces stacked on the upper surface of B, returns to the transfer conveyor 4 again, and returns to its original position 2B''.
It is configured to return to . Fixed pallet 3A
3B is fixed on a base 9 in the working range of the worker 8A8B in the process 1A1B, and in the vicinity thereof there is a sewing machine 7 for sewing each workpiece. And fixed pallet 3A
3B is a plate-shaped body with a notch 6 cut along the front edge so that it can engage with the notch 5 of the movable pallet 2A2B'' without mutual interference when facing the movable pallet 2A2B'', and is spaced apart from the base 9. It is fixed horizontally with a For more information,
Referring to FIGS. 2 and 3, the moving pallet 2B is of a cassette type that can be attached to and detached from the moving conveyor 4.
A locking claw (not shown) provided on the lower surface of the transfer conveyor 4 engages with a protrusion 4'' to move the transfer conveyor 4 back and forth between processes.Then, when it reaches the next process 1B and stops in front of the fixed pallet 3B, the conveyor 4 moves back and forth between processes. Transfer mechanism provided at the bottom of table 9 (not shown)
The moving arm 15 is waiting at a position in contact with the bottom surface of both ends of the stopped moving pallet 2B, and the transfer arm 15 rises to push up the moving pallet 2B and transfer it to the transfer conveyor 4.
The moving pallet 2B is placed on the transfer arm 15. Thereafter, as shown in FIG. 3, the transfer arm 15 moves back and forth and moves up and down to transfer the work 10 on the movable pallet 2B to the stacked work groups 11, 2, and 13 on the fixed pallet 3B. In the illustrated embodiment, the clothes are transferred to the bottom of the clothes (for example, three clothes). That is, the above-mentioned transfer operation is performed by the following operating procedure. (1) The transfer arm 15 carrying the movable pallet 2B moves forward, inserts the movable pallet 2B into the space below the fixed pallet 3B, and then moves up slightly to transfer the workpiece 10 to the lower surface of the fixed pallet 3B. The movable pallet 2B stops at a position where the works 11, 12, 13 on the fixed pallet 3B are slightly pushed up by the notches 5 and 6 being brought into contact with each other so as not to interfere with each other.

FIG. 3A, BO (2) The transfer arm 15 retreats while maintaining the state of (1) above.

FIG. 3B, CO At this time, the works 11, 12, and 13 on the fixed pallet 3B are slightly lifted from the upper surface of the fixed pallet 3B due to the above-mentioned pushing up action, so due to the retreating action of the movable pallet 2B, Work 11, 12, 13
moves backward together with the moving pallet 2B, and the works 10, 11, 12, and 13 are stacked on the moving pallet 2B in this order from the bottom. (The workpiece 10 is held between the pallets 2B and 3B, but due to frictional force, it moves backwards together with the pallet 2B.) (3) Next, in the state of (2) above, the movable pallet 2B moves upward slightly, and It moves forward again,
It stops above the fixed pallet 3B.

FIG. 3C, DO (4) Then, the movable pallet 2B is lowered again, descends below the fixed pallet 3B, and retreats back to its original position.

Figure 3 D, EO At this time, the movable pallet 2B has the notch 5,
When the workpieces 10 to 13 cross and pass through the fixed pallet 3B due to the engagement of 6, the workpieces 10 to 13 are smoothly transferred onto the fixed pallet 3B, and the workpieces 10, 11, 12,
They are piled up exactly in the order of 13. After the above operations have been completed, the moving pallet 2 is transferred from the transfer arm 15 to the transfer conveyor 4 again and returns to the original position 2B'' of the previous process 1A.

The above-mentioned transfer and transfer operations are performed, for example, when the worker 8A completes his or her assigned work, places the workpiece 10 on the moving pallet 2B'', and turns on the start button, the transfer conveyor 4 and the transfer Each operation is automatically detected and controlled by limit switches, phototubes, proximity switches, etc. provided at various points on the arm 15, etc., and an automatic control circuit is provided to automatically operate the above-mentioned one cycle. , in the figure,
16 is a presser arm provided on the moving pallet 2B,
To prevent displacement of the workpiece 10 during transportation. The presser arm 16 automatically clamps the workpiece 10 at the same time as the switch is turned on, and unclamps the workpiece 10 immediately before the transfer operation. The method for progressively feeding a workpiece according to the present invention having the above-described structure can be used, for example, in the process of sewing a suit jacket, by connecting each process from the first process to the final process. Flows accurately according to permutation and is tailored using a first-in, first-out system. can be raised. That is, the main part of the suit jacket is connected to the main line using the above-mentioned progressive method, and the sub-lines of the arms and collar are also connected to the process using the above-mentioned progressive method, and the terminals of the sub-lines are connected to the main line. When connected at important points on the line, - the sewing process of the suit jacket can be configured in a full line that flows accurately and without error based on the predetermined work order. Note that in the above configuration, the fixed pallet 3
A3B and moving pallet 2B'' etc. are located by worker 8A.
It is necessary to set the work area in an appropriate working range where worker 8B can reach out and do repetitive work.In addition, worker 8A8B takes out the top piece of work on fixed pallet 3A3B and sews it, and immediately after completing the processing, The work of placing it on the moving pallet 2A2B and transporting it to the next process will be repeated. Configuring the sewing process as described above has the following effects.

●Since the flow order of the workpieces is maintained accurately between processes, the mass production of sewing with a one-piece specification system, in which the fabric, size, shape, etc., etc., etc., are different for each garment is completely stable without any trouble.
Therefore, due to the stability of the one-piece, one-piece specification system, the number of products to be flown, the flow time, and the number of finished products in stock can be reduced as much as possible, and the productivity can be stably improved. ●In each process, workpieces can be taken out and sent out only by plane transfer between the fixed pallet, the sewing machine table, and the movable pallet within the appropriate working range, so unnecessary incidental operations are omitted and improved, significantly improving work efficiency. It has an improving effect.

In the same sewing process, in one embodiment of the present invention compared to the conventional method using the sink method, the main operation time required only for sewing machine processing is shorter than that of the conventional method compared to the cycle time from taking out the workpiece to sending it out. 20% (maximum) to about 40
The processing duct was significantly improved by ~60%, and the above-mentioned wasteful accompanying operations were significantly omitted and improved.
It could be shortened to 12. ●Since the sewing process is structured in a two-dimensional manner, compared to the conventional hanger method, the
There is no three-dimensional structure of down, which improves factory aesthetics and work environment.

●It eliminates problems such as stretching and falling of the workpiece during flow. It has excellent effects such as It should be noted that the method of the present invention is not limited to the above-mentioned embodiments. For example, the processing ducts of multiple processes are synchronized, the transfer conveyors are unified and consolidated, and the moving pallets are stopped at each process to transfer the workpieces. It can be applied in a variety of ways, such as a system that completely transports multiple processes by reloading, or a system that freely connects processes using a conveyor that transfers along a bent path.

Furthermore, in the first illustrated embodiment, if a robot hand is installed near the sewing machine 7 in each process to automate the processing feed of the workpiece and the transfer of the movable pallet, the operator simply takes out the workpiece from the fixed pallet and inserts it into the sewing machine. The efficiency improvement effect described above becomes even more remarkable. As described above, the method of the present invention solves the conventional problems in the mass production sewing process of suits and the like, and has the useful effect of significantly improving productivity and work efficiency.

[Brief explanation of the drawing]

Fig. 1: A plan view showing a part of the sewing process according to an embodiment of the present invention, Fig. 2: A partially enlarged perspective view of the embodiment shown in Fig. 1, and Fig. 3.
Figure: An explanatory diagram showing the workpiece transfer procedure of the embodiment in Figure 1. Main codes: 1A1B: Individual sewing process, 2A2B2C: Moving pallet, 3A3B: Fixed pallet, 4: Transfer conveyor, 5, 6: Notch, 7: Sewing machine, 8A8B: Worker, 10, 11, 12, 13: Work (cloth to be sewn), 15
: Transfer arm, 16: Presser arm.

Claims (1)

[Claims] 1. In a sewing process in which the cut fabric to be sewn is transferred in the order of steps for tailoring, the fabric to be sewn is placed one piece at a time, placed on a horizontal plate-shaped movable pallet with comb-shaped notches, and transferred to the next process. At the same time, the movable pallet with the notches interlocked is stopped in front of the fixed pallet, which is a horizontal plate having comb-shaped notches and stacked with fabrics to be sewn for each garment. The fabrics to be sewn which have been piled up by being slightly raised from below the pallet are scooped up onto the fabrics to be sewn on the movable pallet and retreated, and then the retreated movable pallet is advanced and lowered to be placed on the movable pallet. Transfer the scooped up group of fabrics to be sewn to the fixed pallet, and transfer the fabrics to be sewn on the transferred movable pallet,
A method for progressively feeding a fabric to be sewn in a sewing process, characterized in that the fabric to be sewn is automatically transferred to the lowest part of the fabric initially stacked on the fixed pallet, and the fabric to be sewn is moved between processes in a predetermined permutation. .