JPH044882B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an apparatus for manufacturing footwear soles such as sandal soles.

<Prior art> Conventionally, for example, sandal soles have been manufactured by punching out a rubber or plastic base plate into the shape of a sandal sole, creating an uneven pattern on the surface of the sandal sole material using a rotating grindstone, finishing the surface, and then painting. It was being polished.

Another method of manufacturing sandal soles is to fill the lower mold of the upper and lower molds with molding material, stack the two molds, apply heat and pressure to form the product, cool it, and then remove the product from the mold. It was hot.

<Problems to be Solved by the Invention> In the former case, the patterning and surface finishing were done using a rotating grindstone, which not only required skill but also required time. Furthermore, in the latter case, it takes time to heat the product in the mold, take it out of the mold after molding, and cool it down, making mass production impossible and causing high costs.

The present invention has been made in view of the above circumstances, and involves heating the punched footwear sole materials to a thermoforming temperature during the process of continuously conveying them one pair at a time, and loading the footwear sole materials into a mold or molding the footwear sole materials into a mold. It is an object of the present invention to provide a manufacturing device for footwear soles, which allows molded products to be safely and easily taken out from a molded product, and which enables mass production by low-temperature pressure molding.

<Means for Solving the Problems> The footwear sole manufacturing apparatus according to the present invention provides extrusion rods that cross the endless belt conveyor at predetermined intervals on the endless belt conveyor. A feeding regulating plate is provided above the side of the body, with pairs of stamped footwear soles arranged in parallel, and the pair of stamped footwear soles that have passed through the regulating plate are received by a roller conveying member, and the feed regulating plate is provided adjacent to the roller conveying member. A heating chamber equipped with a conveying means inside is provided on the extension thereof, and a pair of lower molds adjacent to the heating chamber move reciprocally in a direction perpendicular to the direction of movement of the conveying means, and a pair of lower molds move vertically. An upper mold is provided, and cooling plates for rapidly cooling the upper and lower molds are respectively installed on the upper and lower sides.

<Operation> Next, the operating state of the footwear sole manufacturing apparatus according to the present invention will be explained.

First, a pair of left and right footwear sole materials are pre-punched between extrusion bars on an endless belt conveyor, arranged in two rows along the direction of travel, and stacked on top of each other. Next, the footwear soles advance in the traveling direction, and are regulated by a regulating plate provided above toward the leading end in the traveling direction, so that only the pair of left and right footwear soles pass through. The pair of footwear sole materials that have passed through the regulation plate further proceed to the leading end side of the belt conveyor, and when they reach the leading end, they are sent to the roller conveying member. On the roller conveying member, the footwear sole material temporarily stands still, but is pushed forward by the following footwear sole material, and then moves to the conveying means that passes vertically through the heating chamber. While passing through the heating chamber, the footwear sole is heated until it reaches the forming temperature. After passing through the heating chamber, the pair of softened footwear soles are held in gloved hands and loaded into a pair of female lower molds. This lower mold is moved by a forward motion in a direction perpendicular to the direction of movement of the conveyance means and closer to the operator side by operating a button. This outward movement of the lower mold is performed by an air cylinder or the like. After loading the softened footwear sole material into each of the pair of female lower molds, the pair of lower molds is moved in a backward direction using an air cylinder or the like to return to its previous position, and then the pair of female lower molds is loaded into the upper molds. Move it to just below. Next, a pair of upper molds is lowered by a hydraulic cylinder or the like, and placed on a corresponding pair of lower molds, and a predetermined pressing force is applied. While the lower mold returns to its previous position, it is cooled to a low temperature by the lower cooling plate, while the upper mold is in contact with it and is lowered to a lower temperature by the upper cooling plate, which moves up and down together. cooled down. The upper and lower cooling plates are cooled by a refrigerator to a low temperature ranging from several degrees below zero to several tens of degrees below zero through circulating liquid refrigerant. The footwear sole material thus softened is pressurized and cooled at a low temperature using upper and lower molds to form a desired footwear sole product.

<Example> An example of the present invention will be described below with reference to the drawings.

1 is an endless conveyor belt, installed horizontally. The belt conveyor 1 is placed at intervals along the traveling direction of the belt conveyor 1 such that punched footwear sole materials A such as sandal sole materials made of EVA or the like can be placed in the longitudinal direction. An extrusion rod 2 is fixedly installed to cross the.
Reference numeral 3 denotes a height-adjustable regulating plate installed above the leading end of the belt conveyor 1 in the direction of movement so as to cross the conveyor. The regulation plates 3 are placed on the running belt conveyor 1 in pairs on the left and right, and are arranged vertically at a height such that only one pair of left and right footwear soles A of the footwear soles A stacked in two rows passes through. Slide and secure. Reference numeral 4 denotes a roller conveyance member disposed on an extension of the tip end of the belt conveyor 1, which bridges between the belt conveyor 1 and a conveyance means 6 that passes vertically through the heating chamber 5, which will be described later. is stationary. The footwear sole material A on this roller conveying member 4 is pushed out to the next conveying means 6 side by the subsequent footwear sole material A and the pushing rod 2.
The heating chamber 5 is installed adjacent to the roller conveying member 4, and has the shape of a housing with a cover 5a that can be opened and closed, and a conveying means 6 runs vertically inside the heating chamber. Heaters 7 are installed at the top and bottom. The temperature of the heater 7 is determined by the material of the footwear sole material A,
The temperature is appropriately set to a predetermined temperature via a control panel (not shown) depending on the size, the traveling speed of the conveying means 6, and the like. Further, the conveyance means 6 that runs longitudinally through the heating chamber 5 has a thin plate 6 in the shape of a grid between endless chain belts 6a provided on both sides along the direction of travel.
It is formed by passing b. The traveling speed of the conveyance means 6 is determined by taking into account heating temperature, molding time, etc. Immediately after the footwear sole material A passes through the heating chamber 5, it is softened to a temperature required for molding. 8 is heating chamber 5
A pair of female lower molds are adjacent to each other and reciprocate in a direction perpendicular to the direction of movement of the conveying means 6. This lower mold 8 reciprocates along a guide member 12 attached to a lower cooling plate 10 installed on an extension of the conveying means 6 and adjacent to it. The guide member 12 is located in a direction perpendicular to the direction of movement of the conveying means 6, and a part thereof is fitted into a fitting groove 10a formed on the upper surface of the lower cooling plate 10, so that the upper surface and the lower side of the guide member 12 are fitted. The upper surface of the cooling plate 10 is located on the same plane, and the remainder of the guide member 12 protrudes from the lower cooling plate 10 toward the operator. A slide groove 12a is formed in the center of the upper surface of the guide member 12 along its longitudinal direction, and a slide plate 13 is inserted into the slide groove 12a. The lower mold 8 is a fixture 14 attached to the slide plate 13
It is fixed by and interlocks with the slide plate 13. The slide plate 13 is connected to an air cylinder 15, and the expansion and contraction of the air cylinder 15 causes the slide plate 13 to reciprocate along the slide groove 12a of the guide member 12, and as a result, the lower mold 8 The slide plate 13 also moves together with the slide plate 13. The expansion and contraction movement of the air cylinder 15 is performed by operating a button 19 via a control panel 17. The upper mold 9 is located above the lower cooling plate 10 and is attached in contact with the lower surface of an upper cooling plate 11 installed at a position facing the lower cooling plate 10. Further, a hydraulic cylinder (not shown) is mounted on the upper cooling plate 11 so that the upper mold 9 can descend together with the upper cooling plate 11 and press the lower mold 8. The vertical movement of the upper mold 9 and the upper cooling plate 11 by this hydraulic cylinder is performed by operating a button 19 via a control panel 17. Upper cooling plate 1
1 and the lower cooling plate 10 are connected to each other via a connecting pipe 18, and are circulated and cooled with a refrigerant such as glycol liquid sent from a refrigerator 16 and cooled to several degrees below zero to several tens of degrees below zero. I'll do what I do.

According to the above embodiment, the pair of left and right footwear sole materials A that have passed through the regulation plate 3 are softened in the heating chamber 5 to the temperature required for molding, and the softened footwear sole materials A are transferred to the lower mold 8.
After loading, the upper mold 9 is lowered and both the upper and lower molds 9, 8
The lower mold 8 becomes the lower cooling plate 10 by applying pressure.
The upper mold 9 is cooled by the upper cooling plate 11 before descending, and the footwear sole material A can be rapidly cooled by both molds 9 and 8 when both molds 9 and 8 are pressed together. This means that it can be mass-produced by low-temperature pressure molding.

<Effects of the Invention> As can be seen from the above description, the present invention provides a footwear sole that can continuously convey punched footwear sole materials through a regulating plate at a predetermined interval, one pair at a time, and that is heated to a thermoforming temperature. It is possible to safely and easily load materials into a mold or take out a molded product from a mold. Additionally, during pressure molding, the mold is cooled to an extremely low temperature via a cooling plate, which shortens molding time and enables mass production.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a sectional view showing the footwear sole material passing through the regulation plate, Figure 3 is a perspective view showing the positional relationship between the upper and lower molds, and Figure 4 is the state in which the refrigerator and the upper and lower cooling plates are connected. FIG. 1... Belt conveyor, 2... Extrusion rod, 3...
...Regulation plate, 4...Roller conveying member, 5...Heating chamber, 6...Transporting means, 8...Lower mold, 9...Upper mold, 10...Lower cooling plate, 11...Upper cooling Board.

Claims (1)

[Claims] 1. On an endless belt conveyor, extrusion rods are provided at predetermined intervals to cross the conveyor, and a regulating plate is provided above the conveyor toward the leading end in the direction of movement, for feeding punched footwear sole materials in pairs in parallel. , and a pair of punched footwear sole materials that have passed through the regulation plate are received by a roller conveying member, and a heating chamber equipped with a conveying means therein is provided adjacent to and on an extension of the roller conveying member, and the heating chamber is provided with a conveying means therein. A pair of lower molds that are adjacent to each other and move back and forth in a direction perpendicular to the direction of movement of the conveying means, and a pair of upper molds that move up and down are provided, and cooling plates for rapidly cooling the upper and lower molds are installed above and below. A footwear sole manufacturing device characterized in that it is installed in each of the following.