JPH071591A - Manufacture of solid standard model for judging seam puckering - Google Patents

Abstract

PURPOSE:To provide a solid standard model, which judges the grade of seam puckering related to the stitched wrinkle formed in the vicinity of the seam of a stitched product. CONSTITUTION:The undulating amount of a stitched sample in test stitching caused by seal puckering is measured with non-contact type surface-displacement measuring device. The data are latched into a computer, and the data are processed in the computer (steps 1-3). Based on the result, a master pattern is manufactured by the three-dimensional optical polymerization of liquid resin with ultraviolet rays or laser or mechanical cutting of a block made of material whose cutting is easy (step 4). A molding die for resin and the like is manufactured from the master pattern by transfer technology (step 5). The solid standard model for judging seam puckering is manufactured by molding by using the molding die (step 6).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a three-dimensional standard model for determining the grade of seam puckering in a seam portion of clothes and a method for producing a master pattern for producing the three-dimensional standard model.

[0002]

Prior to the description of the prior art, seam puckering of a sewn product will be described. The seam puckering is defined in JIS L0122 as "sew wrinkles that occur in the vicinity of a seam that are slightly regular". There are various causes of seam puckering, but if the outline is shown as the main ones, it may be due to the difference in the elongation of the upper and lower cloths, the elongation of the sewing thread, or other cases.

Seam puckering is classified into grades 1 to 5 in accordance with the degree thereof. Heretofore, the judgment of the grade of the seam puckering has been carried out by comparison and judgment with a photographic standard which is a two-dimensional model in which the seam puckering of grades 1 to 5 is represented by shading on the plane of the printing paper.

This judgment method is based on the American judgment standard AATC.
It was determined by C 88B-1964T, and in determining the grade of the seam puckering, an actual sewing sample and a photographic standard were installed under predetermined conditions, and other illumination conditions for these and an observation distance for determination. The conditions such as are defined in detail.

That is, regarding the installation of the actual sewing sample and the photographic standard, these are placed side by side on a plate-shaped stand, and for lighting, a lighting fixture is supported on the stand, and predetermined rules such as illuminance and lighting angle are set. It stipulates that the grade of the sewing sample is judged by illuminating the frame on which the actual sewing sample and the photographic standard are juxtaposed, and comparing and observing the sewing sample and the photographic standard on the board from a fixed distance.

[0006]

According to the above-mentioned conventional example, firstly, in determining the seam puckering grade, the photographic standard is two-dimensional, and the stitch sample to be judged is a three-dimensional shape, and the judgment grade is three-dimensional. There is a limit to increasing the accuracy of the method, and there is a large room for the subjectivity of the determiner to enter. Therefore, there is a problem that the determination grades of the same sewing sample do not necessarily match depending on the determiner.

Secondly, in determining the seam puckering grade, it is necessary to prepare a large-scale tool such as a cradle as described above as a practical problem, and further, it is necessary to make detailed settings such as lighting conditions. However, it cannot be easily determined at the work site such as the laundry industry or the site where clothes are purchased, and it has been a problem.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention provides a non-contact type surface deviation measuring device for a sewn sample of a seam pucker ring that has been trial sewn,
For example, the three-dimensional photopolymerization of liquid resin by ultraviolet rays or laser based on the data obtained by taking in the computer the unevenness measurement data of the seam puckering by a three-dimensional laser measuring device or the changes in the shade of the seam puckering by a photograph and processing the data by the computer, , A master pattern is manufactured by mechanical cutting of a block of a material that is easy to cut, and a molding die of resin or the like is manufactured by a transfer technique from the master pattern manufactured based on this sewing sample It provides a method of manufacturing a standard model by molding, further, it is manufactured based on a sewing sample, and a mold for injection molding is manufactured based on the manufactured master pattern, and seam puckering judgment is performed by injection molding using this. Providing a way to make a 3D standard model for Than it is.

[0009]

According to the present invention, firstly, in the judgment of the puckering grade, the surface of the three-dimensional standard model is observed from various angles in order to compare it with the seams to be judged, if necessary. If necessary, the tactile sensation of a finger or the like can also be mobilized for determination, so compared to the determination of the seam puckering grade according to the photographic standard, it can be easily determined in a short time,
There is an effect that the difference of the judgment grade by the judge becomes smaller than the conventional one, and the seam puckering class can be judged with high accuracy.

Secondly, in judging the seam puckering grade, it is only necessary to compare the three-dimensional standard model with the sample to be judged, so prepare a large tool such as a cradle as in the case of the conventional photographic standard. There is no need to make detailed settings such as lighting conditions, and there is an effect that the seam puckering grade can be easily determined at a work site such as a laundry industry or a clothing stocking site.

Thirdly, since the same three-dimensional standard model for each grade can be easily duplicated by casting by using a silicone rubber mold as a molding die, a user who needs a three-dimensional standard model In addition, when there is a change in the undulation amount, which is the criterion for each grade of the three-dimensional standard model, there is an effect that the data processing by the computer can promptly respond to the change.

[0012]

First Embodiment The present invention will be described below with reference to the first embodiment. A method of manufacturing a three-dimensional standard model for determining seam puckering will be described in the order of steps with reference to the process chart of FIG. 1 and the drawings related to each process.

Step 1 (manufacture and selection of seam pucker ring sewing samples) In step 1 of FIG. 1, a large number of seam pucker ring sewing samples were manufactured, and the seam pucker ring grades 1 to 5 were classified among them. Select what you want to do.

That is, two pieces of karako are overlapped and sewn straight,
As shown in Fig. 2, a large number of Samples 1 were produced in which seam puckering was generated near the seams by changing the sewing conditions. From among them, those corresponding to the first to fifth seam puckering grades were visually inspected. Select by.

Step 2 (Measurement of the amount of relief of the sewn sample) Next, the amount of relief of the seam puckering is measured for each of these selected sewing samples. That is, the undulation amount of the seam puckering is measured by the three-dimensional laser measuring device 2 as the non-contact type surface deviation measuring device shown in FIG.
The measurement head 5 for projecting and receiving the laser beam 4 is moved forward, backward, leftward and rightward with respect to the sewing sample 1 placed on the base plate 3, and scanning is performed with the laser beam 4. The displacement data indicating the measured relief of the seam puckering surface is immediately loaded into the first storage device (not shown) of the computer COM.

Step 3 (Processing of Data by Computer) Here, the first deviation data loaded into the computer COM is for the seam puckering grade 1 to 5 stitch samples visually selected, and The quantification of the undulation amount after correction of the undulation amount between grades and the undulation amount for each intermediate grade of each grade, which is obtained by further subdividing the one grade interval, is all calculated by the computer COM, and the second digitization of the computer COM is performed as digitized data. Stored in a storage device (not shown).

Step 4 (Production of Master Pattern) The production of the master pattern for each of the grades 1 to 5 of the seam puckering grade is performed by cutting the block by machining or using a photopolymer resin based on the above-mentioned numerical data. The three-dimensional photopolymerization method is used.

In this embodiment, a method of three-dimensional photopolymerization using a photopolymer resin will be described. As shown in FIG. 4, when the surface plate 11 of the three-dimensional photopolymerization model manufacturing apparatus 10 is submerged in the liquid resin 12 for photopolymerization, and the surface plate 11 is irradiated with a pattern by the laser beam 13 based on the above-mentioned numerical data. , The resin polymerizes and solidifies.

When the first stage solidification is completed, the second stage surface plate 1
1 is submerged in the liquid resin, and the solidification of the polymer is advanced while irradiating a laser beam onto the pattern. By repeating this operation, the three-dimensional photopolymerization model 1 as a master pattern is obtained.
4 can be manufactured.

The three-dimensional photopolymerization model 14 as a master pattern shaped into a rubber mold can be manufactured in parallel for each grade on one surface plate, and the size of numerical data is also large. Since it can be enlarged and reduced by computer processing, it is possible to select and combine practical model production forms that are practically convenient.

Step 5 (Manufacture of Mold) A mold is manufactured from the master pattern manufactured in Step 4 by a transfer technique. That is, as shown in FIG.
When the master pattern 14 is fixed in the liquid 5, the liquid silicone rubber 16 is poured from above, and vacuum defoaming is performed, the liquid silicone rubber 16 adheres closely to the surface of the master pattern and faithfully copies the surface shape, and at room temperature. If it is left for about 2 to 17 hours, it can be cured and released. When the cured silicone rubber is released from the master pattern, the molding die 17 is completed.

Step 6 (Production of three-dimensional standard model) A three-dimensional standard model is produced from the molding die 17 by casting. That is, as shown in FIG. 7, when the urethane casting resin 18 is cast on the molding die 17, it cures in about 6 minutes, and is released from the rubber molding die 17 in about 10 minutes including the release operation time. be able to. The cast product which has completed the mold release becomes a three-dimensional standard model 19 of seam puckering as shown in FIG.

By using the method described above, by taking a large number of molding dies 17 from one master pattern 14 and repeating casting, a large number of three-dimensional standard models 19 can be efficiently produced. In addition, since the three-dimensional standard model 19 manufactured in this manner is in a solid state, not a pseudo-fluid deformation body such as cloth, it has an advantage that it is not affected by environmental changes such as secular change and humidity and temperature.

Further, since the three-dimensional standard model according to the present invention is not a two-dimensional model like a photographic standard, it is a three-dimensional model, and therefore, when determining the seam puckering grade, the lighting conditions of the site are directly accepted to determine the lighting condition. Accurate comparison and judgment can be made without being confused.

[0025]

[Second Embodiment] The present invention will be described below with reference to FIG. 9 showing the steps of the second embodiment. In the second embodiment, a molding die is manufactured from the master pattern in the first embodiment, but a mold for injection molding is manufactured in place of the molding die, and a three-dimensional standard model is manufactured by injection molding. Is. The second
In the embodiments, drawings other than the process drawings are omitted.

Steps 11 to 14 These steps 11 to 14 are the steps 1 to 14 of the first embodiment.
The description is omitted because it is the same as step 4.

Step 15 (Production of Intermediate Die by Transfer Technique) An intermediate die is produced by the transfer technique with respect to the master pattern produced in Step 14. In the embodiment, the master pattern is fixed in the mold, a liquid elastic mold material is poured, and after curing, the master pattern is released from the master pattern to manufacture an intermediate mold.
Polysulfide rubber, urethane rubber, silicone rubber or the like can be used for this elastic mold material.

Step 16 (Gypsum Molding from Intermediate Mold) The intermediate mold is fixed in a mold, water-gypsum slurry is poured and hardened to carry out gypsum molding, and a gypsum mold is manufactured.

Step 17 (manufacture of simple mold) Using the gypsum mold manufactured in step 16, non-ferrous metal alloy is vacuum-cast to manufacture a simple mold for injection molding. As the non-ferrous metal alloy, each alloy such as zinc, aluminum or copper can be used.

Step 18 (Production of three-dimensional standard model) Using the injection molding die produced in Step 17, a three-dimensional standard model is produced by injection molding a thermoplastic resin such as polypropylene or ABS resin.

The production of the stand-by standard model by this injection molding is performed more quickly than the case of the molding die shown in the first embodiment, and more three-dimensional standard models can be produced by one die. .

[0032]

As described above, according to the present invention, firstly,
When judging the packer's grade, observe the surface of the three-dimensional standard model from various angles to compare it with the seams to be judged, if necessary, and judge the tactile sensation of fingers, etc., if necessary. Compared to the seam puckering grade judgment based on the photographic standard, the judgment can be performed easily in a short time, and the difference in judgment grade by the judge is smaller than before, and the seam packer with high accuracy can be obtained. The effect that the ring grade can be determined is obtained.

Secondly, in determining the seam puckering grade, it is only necessary to compare the three-dimensional standard model with the sample to be graded, so prepare a large-scale tool such as a cradle as in the case of the conventional photographic standard. There is no need to make detailed settings such as lighting conditions, and it is possible to easily determine the seam puckering grade at work sites such as the laundry industry and clothes stocking sites.

Thirdly, since the same three-dimensional standard model for each grade can be easily duplicated by casting by using a silicone rubber mold as a molding die, a user who needs a three-dimensional standard model can easily copy it. In addition, when the amount of ups and downs, which is the criterion for each grade of the three-dimensional standard model, is changed, it is possible to quickly respond to the change by computer data processing.

[Brief description of drawings]

FIG. 1 is a process diagram showing a manufacturing process of a first embodiment of a three-dimensional standard model.

FIG. 2 is a perspective view showing a sewing sample in which seam puckering has occurred.

FIG. 3 is a diagram for explaining measurement of the undulation amount of seam puckering of a sewing sample by a three-dimensional laser beam measuring device.

FIG. 4 is a diagram illustrating production of a three-dimensional photopolymerization model using a three-dimensional photopolymerization model production device.

FIG. 5 is a perspective view of a master pattern.

FIG. 6 is a diagram showing a process of manufacturing a molding die from a master pattern.

FIG. 7 is a diagram showing a process of manufacturing a three-dimensional standard model using a molding die.

FIG. 8 is a perspective view showing a three-dimensional standard model manufactured by molding.

FIG. 9 is a diagram showing a manufacturing process of a second embodiment of a three-dimensional standard model.

[Explanation of symbols]

1 Sewing sample 2 Three-dimensional laser beam measuring device as a non-contact type surface deviation measuring device COM computer 12 Three-dimensional photopolymerized resin 14 Master pattern 17 Molding mold 19 Three-dimensional standard model

Claims (3)

[Claims] 1. A non-contact type surface deviation measuring device is used to measure the deviation of the amount of undulations on the surface of a seam pucker ring formed on an actual sewing sample, and the measured deviation data is loaded into a computer. A method for producing a master pattern for a three-dimensional standard model for seam puckering judgment by three-dimensional photopolymerization of a liquid resin or mechanically cutting a block of an easily cut material based on the taken deviation data. 2. A seam pucker ring, characterized in that a molding die is manufactured by a transfer technique using a master pattern for a three-dimensional standard model manufactured based on a sewing sample, and a three-dimensional standard model is manufactured by molding based on this. How to make a three-dimensional standard model for judgment. 3. A seam pucker ring characterized by producing a mold for injection molding using a master pattern for a three-dimensional standard model produced based on a sewing sample, and producing a three-dimensional standard model by injection molding based on this. How to make a three-dimensional standard model for judgment.