JPH0135948B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a finishing template for steam-setting socks using fiber-reinforced plastic as a constituent material. [Prior Art] A sock finishing machine using the steam heating setting method that is commonly used at present has a sock attaching section that attaches unfinished socks to a template along an endless track path, and a sock attaching section that attaches unfinished socks to a template, and assembles the attached socks into a pair. A steam setting chamber for steam-setting all socks, a drying chamber for drying the steam-set socks,
A cooling unit that cools the dried socks, and a extraction unit (or extraction device) that extracts the cooled socks.
A carriage with one set (generally 20 to 30 templates) standing upright can be run on the track, and is arranged in multiple sets on the track. Each chamber and each part is configured to perform predetermined processing. The finishing template for steam-heating socks in such a sock finishing machine is made of a high-strength aluminum alloy, and its thickness is set so that the tip of the template does not fall over when the template is placed vertically. In addition, it is constructed with a predetermined thickness to provide rigidity. Usually, the thickness of this plate is 3 to 4 mm for long sock templates and 1.5 mm for short sock templates.
1.0 to 2.0mm for special templates. [Problems to be Solved by the Invention] However, according to the conventional template as described above, an untreated sock is attached, and the sock finishing machine steam-sets the sock with high-pressure saturated steam, dries it, and cools it to make the sock. is extracted from the template, but during the steam setting process, the steam that has passed through the sock condenses on the template until it reaches a predetermined temperature on the template (sock setting temperature, generally around 115°C). of drain is generated. The amount of drain and the time required will be significantly longer due to the following reasons. In other words, the template is made of a high-strength aluminum alloy and is generally thick, so the heat capacity of the template is large, and the time required to heat up the template during steam setting is longer. Since socks contain a large amount of moisture, a large amount of heat energy is expended in dehumidifying them during the drying process. Furthermore, in order to make the socks easier to set, we use a cooling process for the socks (longer natural cooling time is used for thinner socks, and forced cooling is provided for thicker socks). Since the 4mm template has a large heat capacity, it is difficult to heat up and cool down, which makes it difficult to cool the socks, which not only reduces the ease of setting the socks, but also makes it difficult for workers to remove and put on the socks. During this process, the operator's fingers come into contact with the template, which is not sufficiently cooled, and if this operation is repeated frequently, burns occur, causing physical pain to the operator. In addition, when a template made of high-strength aluminum alloy is subjected to an external force when removing or putting on a sock, it will topple over and cause slight plastic deformation, and if used repeatedly and continuously, this deformation will increase and become unusable. Therefore, it had various drawbacks that required timely correction. Therefore, the objects of the present invention are to be able to have an excellent mechanical strength and be lightweight, have a small heat capacity, shorten heating and cooling time, reduce the heat energy required for steam setting and drying processes, be easy to maintain, and prevent workers from getting burnt. The purpose of the present invention is to provide a finishing template for steaming socks that can eliminate injury. [Means for Solving the Problem] In order to achieve the above object, the finishing template for steam-setting socks according to the present invention has the following features:
The template consists of a finishing template for steam-heating socks made of fiber-reinforced plastic, and the fiber-reinforced plastic is laminated so that the fiber arrangement angle of each layer is symmetrical with respect to the center in the thickness direction. In addition, it is characterized by being laminated to include a layer in which the fiber arrangement direction is aligned in the longitudinal direction as the outermost layer. Carbon fibers or glass fibers are preferably used as the fibers of the fiber-reinforced plastic. [Function] According to the finishing template for steam-setting socks of the present invention, ease of processing and weight reduction can be achieved by constructing the template from fiber-reinforced plastic. In addition, fiber-reinforced plastics are laminated so that the fiber arrangement angles of each layer are symmetrical with respect to the center of the thickness direction, and the outermost layer includes a layer in which the fiber arrangement direction is aligned in the longitudinal direction. This makes it possible to reduce the thickness of the template, and further improve heat resistance and durability. [Example] Next, a preferred example of the finishing template for steam-setting socks according to the present invention will be described in detail with reference to the accompanying drawings and measurement data. Example 1 FIG. 1 shows a front view of a finishing template for steam-setting short socks, with the x-axis pointing in the longitudinal direction of the template.
The y-axis indicates a rectangular coordinate with the x-axis. First, carbon fibers arranged in one direction are impregnated with B-stage epoxy resin to form a prepreg, and the fiber arrangement angle of each layer is, for example, (0°/ 0゜／0゜／0゜／90゜／90゜／0
゜／
0°/0°/0°), and the layer in which the fibers are arranged in the longitudinal direction is set as the outermost layer. Next, the prepreg-like laminate was cut into a predetermined template shape and laminated, and the prepreg-like laminate was further sealed using a nylon film, and then heated and cured in an autoclave at 130°C and 3 kg/cm ² under pressure, and after molding. The thickness is 1.3mm, the fiber volume ratio is 65
% carbon fiber reinforced plastic templates were obtained. The sectional view taken along the - line of the carbon fiber reinforced plastic template shown in Figure 1 obtained here is shown in Figure 4.
As shown in the figure. Example 2 For material measurement, a test plate was prepared by laminating and curing the same fiber arrangement angle and the same lamination order as the template, and this laminate for measuring physical properties was subjected to JISK6911 "General Test Methods for Thermosetting Plastics". Based on this, the bending strength and elastic modulus were determined, and the bending strength and elastic modulus were also determined for the high-strength aluminum alloy A5052P, which is the material of the conventional template. The above results are shown in Table 1 and FIG. 5.

【table】

[Table] Kg/ ^mm2
As shown in Table 1 and Figure 5, carbon fiber reinforced plastic laminates exhibit approximately 4 times the bending strength and 1.5 times the bending modulus of conventional high-strength aluminum alloys. It can be seen that it has excellent mechanical strength. The amount of deflection due to bending can be evaluated by the amount of bending rigidity. Using the values of the bending elastic modulus in Table 1, we calculated the bending rigidity of a 1.3 mm thick carbon fiber reinforced plastic template and the flexural rigidity of a 1.5 mm thick template. The bending stiffness of the aluminum alloy template was calculated using equation (1). Bending rigidity: EI=Ebh ³ /12...(1) b: Plate width, h Plate thickness, E: Bending modulus From the above, a carbon fiber reinforced plastic template with a thickness of 1.3 mm and a high strength template with a thickness of 1.5 mm. It can be seen that the aluminum template has the same bending rigidity, and based on the same bending rigidity, the carbon fiber reinforced plastic template can be approximately 87% thicker than the conventional high-strength aluminum template. Example 3 Drying capacity can be expressed in terms of complete drying time. The following measurements were performed on a 1.3 mm thick carbon fiber reinforced plastic template and a conventional 1.5 mm thick high strength aluminum template. Men's socks made of nylon (40%)/cotton (60%) are set at a setting chamber pressure of 1.2 kg/cm ² G and a setting time of 10.
After the socks were set to steam under the conditions of 2 seconds, the time until the socks were completely dry was measured under the following drying conditions. Drying conditions: Hot air temperature: 130°C Hot air volume: 120 m ³ /min Hot air speed: 8 m/s Volume: 0.65 x 1.3 x 0.4 m ³ As a result, the complete drying time was as shown in Table 2.

〔Effect of the invention〕

The effects of the finishing template for steam-setting socks according to the present invention are listed below. (1) Even if it is thinner than conventional templates, it has bending strength and rigidity equal to or higher than conventional templates, and its density and specific heat are lower than conventional high-strength aluminum. As a result, the template becomes extremely lightweight and has a small heat capacity, which reduces the heating time of the template during steam setting, and also significantly reduces the amount of condensate generated on the template. And the thermal energy spent in the drying process can be significantly reduced. (2) The template is made of carbon fiber-reinforced plastic and has no plastic region due to its load-elongation characteristics, so it does not undergo plastic deformation and can be used for a long period of time due to its high fatigue properties. There's no need to do that at all. (3) The thermal conductivity of carbon fiber reinforced plastic is several tenths of that of high-strength aluminum, and its heat capacity is small, so the surface temperature of the template of the present invention decreases extremely quickly during the cooling process, and has a cooling effect on socks. It is possible to provide high-quality socks that do not have irregular sizes or lose their shape, and also relieves workers from physical pain by eliminating burns caused by insufficient cooling with conventional templates. Although typical configuration examples of the present invention have been described above, it goes without saying that various design changes can be made without departing from the spirit of the invention. For example, the core material of the template may be made of metal or plastic, By bonding fiber-reinforced plastic to both sides of this template, substantially the same results and effects as those of the previous embodiment can be obtained.

[Brief explanation of drawings]

FIG. 1 is a front view of a finishing template for steam-setting short socks according to the present invention, FIG. 2 is a front view of a finishing template for steam-setting long socks, and FIG. 3 is the same. A front view of the finishing template for steam-setting long socks (with heels), Figure 4 is the same as in Figure 1.
Figure 5 is a comparative characteristic diagram of carbon fiber-reinforced plastic and high-strength aluminum showing the relationship between bending stress and deflection, and Figure 6 is a graph of carbon fiber reinforced plastic showing the relationship between template surface temperature and time. FIG. 2 is a comparative characteristic diagram of a plastic template and a high-strength aluminum template.

Claims (1)

[Claims] 1. A finishing template for steam-heating socks made of fiber-reinforced plastic;
Fiber-reinforced plastics are laminated so that the fiber alignment angle of each layer is symmetrical with respect to the center in the thickness direction, and the outermost layer includes a layer in which the fiber alignment direction is aligned in the longitudinal direction. A finishing template for steam-heating socks.