JPH0263456A - Hollow plateform molded product and manufacture thereof and manufacturing device for hollow plateform molded product - 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 (a) Industrial Application Field The present invention relates to a hollow plate-shaped molded product suitable for a plaster cast or a mat placed on a bed spring, a method for manufacturing the same, and a hollow plate-shaped Related to molded product manufacturing equipment.

(B) Conventional technology Conventionally, plaster casts made of plaster, pulp, and fibers have been commonly used as materials for casts used in cases of fractures or sprains. 8
It is fixed on the affected area of the patient for a long period of time, up to IO weeks.

In addition, the structure of a conventional bed consists of a bed substrate, a large number of springs attached to the bed substrate, a synthetic resin net placed on the springs, a non-woven fabric placed on the synthetic resin net, and the non-woven fabric. It consists of various fillings placed on top.

(c) Problems to be solved by the invention However, conventional plaster casts are heavy, have poor water resistance, and do not have breathability, which is an important condition required for plaster casts. The problem was that the treatment used required a lot of patience for the patient.

In addition, the conventional head structure has the problem that the body weight is distributed to the springs via the synthetic resin net, which results in poor body weight distribution efficiency and poor air permeability.

The present invention has been made in consideration of the above circumstances, and therefore provides a hollow plate-shaped molded product, a method for manufacturing the same, and a manufacturing apparatus for the hollow plate-shaped molded product, which can solve the above-mentioned problems.

(D) Means for Solving the Problems This invention comprises a pair of plate parts having wide surfaces facing each other, and a shelf-shaped space between the pair of plate parts integral with the plate parts and in a direction substantially orthogonal to the plate parts. a plurality of rib plate portions provided on the rib plate portions, and slits of a predetermined width are formed in parallel at predetermined intervals in a direction orthogonal to the longitudinal direction of the rib plate portions. A hollow plate-shaped molded product made of plastic, which is used as a cast by bending the hollow plate-shaped molded product into a cylindrical shape with one axis parallel to the direction in which the slits are formed as the central axis. It is a molded product.

In addition, this invention can be used by laying it in a mat shape on the springs arranged in large numbers on the bed substrate, and is configured as a mat material that has ventilation and can effectively distribute the weight to the springs. can do.

Further, according to the present invention, when extruding the hollow plate-like molded product, a pair of upper and lower belt-shaped cutting blades provided near the molded product outlet and having a length substantially equal to the width of the molded product outlet are cut into a predetermined shape. When each plate is moved in/out of the plate periodically, slits of a predetermined width are formed parallel to each other at predetermined intervals in a direction perpendicular to the longitudinal direction of the rib plate in the pair of plate parts of the hollow plate-shaped molded product. It is formed by

Hollow plate-shaped molded products are manufactured using manufacturing equipment that continuously extrudes heat-fluidized resin through a die. The die has a length substantially equal to the width of the molded product discharge port, and is located above and below at a predetermined distance MM from the discharge port toward the extrusion side;
It can be molded and extruded by a manufacturing device equipped with a pair of band-shaped cutting blades arranged in parallel so as to be reciprocally interlocked in the vertical direction, and a drive means provided near the die for reciprocatingly interlocking the pair of band-shaped cutting blades. Slits in a direction perpendicular to the extrusion direction can be formed in parallel at predetermined intervals on both the upper and lower planes of the hollow plate-shaped molded product.

(E) Function According to the hollow plate-shaped molded product of the present invention, ventilation is performed by the plurality of hollow passages and the slits communicating with these hollow passages, and ventilation of the affected area fixed by the cast is maintained.

Furthermore, when this invention is laid down in the form of a mat on the springs of a bed, the body weight is reliably distributed over the springs, and body heat is dissipated through the hollow passages and slits.

First, when a molded product is extruded from the molded product outlet with the band-shaped cutting blade periodically reciprocating up and down, slits perpendicular to the extrusion direction are formed at predetermined intervals on the front and back surfaces of the molded product. They are formed parallel to each other.

(F) EXAMPLES The present invention will be described in detail below based on examples shown in the drawings. Note that this invention is not limited by this.

FIG. 1 is an external view showing an embodiment of a hollow plate-shaped molded product used for a plaster cast according to the present invention.

In the figure, a hollow plate-shaped molded product 1 is made of a thermoplastic resin such as vinyl chloride, polyethylene, etc. whose hardness and softness can be controlled by blending, and is obtained by extrusion molding. The length and width of this hollow plate-shaped molded product l are determined depending on the part where it will be used, but the thickness is approximately 10+ m ~
The thickness of the plate portion having opposing wide surfaces and the rib plate portion, which will be described later, is approximately 1III11 mm, and the spacing between the rib plate portions is approximately 10IIIffi, forming a hollow thin plate structure.

To explain in more detail, the hollow plate-shaped molded product 1 has a pair of plate parts 2 (front side) and 3 (back side) having wide surfaces facing each other.
and are formed integrally with these plate portions 2.3, and plate portions 2.3
It is composed of a plurality of rib plate portions 4 provided in a shelf-like manner between a pair of plate portions in a direction substantially orthogonal to the plate portions. It is provided,
Also, both end surfaces 5 in the same direction A (only one end surface is shown)
is open.

Furthermore, the pair of plate parts 2 and 3 have parallel slits 6 (front side) and 7 (back side) having a predetermined width at predetermined intervals in a direction perpendicular to the longitudinal direction of the rib plate part 4. It is formed. Note that the slit 6 provided in the plate portion 2,
It is preferable that the slits 7 provided in the plate portion 3 are provided at positions that do not penetrate vertically.

With this configuration, a plurality of hollow passages 8 are formed inside the plate parts 2, 3, and these hollow passages 8 are further communicated with the slits 6.7, thereby maintaining ventilation.

FIG. 2 shows a cast 12L constructed by bending the above-described hollow plate-shaped molded product 1 into a cylindrical shape along the shape of the air arm. Bending process of hollow plate-shaped molded product 1
This can be easily carried out by heating to 50 to 160°C. In addition, the joint part of the hollow plate-shaped molded product l is the third
As shown in the figure, the joints 9b of the tape-like Velcro 9λ attached to both sides of the socket 9 and the joints 9d of the sheet-like Velcro 9c attached to the surface of the socket 9 are each attached to a cast. 1
It is fixed by pressing on the joints 9e and 9f of the Velcro tape attached in advance to a. Also,
When fixed with Velcro, the shape of the cast 1a is repaired after the cast 1a is set 7 times, so the cast 1a can be easily removed even if removal is necessary. Note that if it is not necessary to remove the cast 1a until after the treatment, the socket 9 and the cast 1a may be fixed by means such as adhesive or heat fusion.

FIG. 4 is a sectional view showing a state in which the above-described hollow plate-shaped molded product I is laid in a mat shape on a spring i disposed in large numbers on a bed substrate 0. With this configuration, the springs 11 come into contact with the lower surface of the hollow plate-shaped molded product l, so that the weight of the person lying on the bed is distributed more evenly and efficiently on the springs 11 than with conventional nets.

In addition, ventilation is maintained in the direction of arrow C in the hollow plate-shaped molded product 1 and within the hollow passage 8, so that body temperature is not accumulated.

Next, a method for manufacturing a hollow plate-like molded product and an apparatus for manufacturing the same will be explained using the apparatus for manufacturing a hollow plate-like molded product shown in FIG.

5(a) is a side view of the main plate of the hollow plate-shaped molded product manufacturing apparatus 20, FIG. 5(b) is a front view of the main plate, and FIG. 5(c) is a plan view of the main plate.

In FIGS. 5(a) to 5(c), the manufacturing apparatus 20 includes an extrusion molding machine main body 21, a die 22, and cutting blades 23 and 2.
4 and a cutting blade drive means 25.

The extrusion molding machine main body 21 is a normal extrusion molding machine that continuously extrudes and molds heated and fluidized resin through a die. The die 22 is a shallow box-shaped block with a substantially rectangular discharge opening, and as shown in FIG. 6, it consists of an upper die 22a and a lower die 22b, and there is an extrusion channel for molten synthetic resin inside. 22c is formed. 26 is a nozzle attached to the die discharge part, and a plurality of core materials 26a for forming the composite 1 into a hollow shape.
and supporting the core material 26a, the plate parts 2 and 3 and the rib plate part 4
It consists of a support for forming +826b.

23 and 24 have a length substantially equal to the width of the molded product discharge port of the nozzle 26, and are located above and below at a position a predetermined distance away from the molded product discharge port toward the extrusion side.
There are a pair of belt-shaped cutting blades that are arranged in parallel so that they can be reciprocated in the vertical direction, and are periodically reciprocated in the vertical direction by a cam, which will be described later, to cut a predetermined width into the plate parts 2 and 3 of the hollow plate-shaped molded product l, respectively. Make a slit.

The cutting blade drive means 25 includes a motor 27 and a transmission mechanism 28,
It is composed of a chain 29, a cam mechanism 30, and a sliding shaft 31.

The motor 27 is provided near the die 22, and is preferably configured as an electric motor with a reduction gear. The transmission machine M428 has a sprocket 28a and this sprocket 2.
The sprocket 28a is made up of a rotating shaft 28b that is fixed while passing through the sprocket 8a, and a bearing 28c that supports the rotating shaft 28b. ing.

The cam [a30 is the rotating shaft 28b and the sliding shaft 3! The sliding shaft 31 is periodically moved back and forth in the vertical direction. Strip-shaped cutting blades 23 and 24 are attached to this sliding shaft 31 in parallel with a predetermined interval, so that the upper strip-shaped cutting blade 23 descends to form a slit 6 on the plate portion 2. When the lower band-shaped cutting blade 24 separates from the plate part 3, and when the upper band-shaped cutting blade 23 separates from the opposite part 2, the band-shaped cutting blade 24 according to the following rule cuts the slit 7 in the plate part 3. Form. Note that the lowering limit of the upper band-shaped cutting blade 23 and the rising limit of the lower band-shaped cutting blade 24 are set at a position that slightly exceeds the wall thickness of the plate portion 23.

Next, the operation of the hollow plate-shaped molded product manufacturing apparatus will be explained.

When the motor 27 is operated, the sprocket 28a rotates via the chain 29, and the cam mechanism 30 operates, causing the sliding shaft 3Ilr<"4 to move back. As a result, the band-shaped cutting blades 23 and 24 reciprocate in the vertical direction. Then, when the synthetic resin molded into a hollow plate shape is extruded from the nozzle 26, the extruded synthetic resin lI! Vfi of the finger, part 2
A slit 6 and a slit 7 in a direction perpendicular to the extrusion direction are formed in parallel on each of the opposing plates 3 at a predetermined interval.

When the band-shaped cutting blade 23 forms the slit 6, the band-shaped cutting blade 24 separates from the plate part 3, so the position of the slit formed in the plate part 2 and the plate part 3 is such that it penetrates in the vertical direction. Formed in a shifted position.

(G) Effects of the Invention According to this invention, since the cast can be constructed of a hollow plate-shaped molded product that is lightweight and has good air permeability, it is possible to significantly reduce the burden on the patient during treatment. .

In addition, by laying it like a mat on top of the springs of the bed, it is possible to effectively distribute the body weight onto the springs in a well-balanced manner, and it is also possible to maintain breathability, so you can get a comfortable night's sleep. .

According to the method for manufacturing a hollow temporary molded product of the present invention, slits having a predetermined width can be formed in parallel at predetermined intervals in a direction orthogonal to the longitudinal direction of the rib plates in a pair of plate parts, and It is possible to give directionality to a shaped molded product during processing.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a part of the hollow plate-shaped molded product of the present invention, Fig. 2 is an external view showing an embodiment of the hollow plate-shaped molded product for plaster casts of the present invention, and Fig. 3 is a perspective view showing a part of the hollow plate-shaped molded product for casts of the present invention. FIG. 4 is a perspective view showing the connection part of the hollow plate-shaped molded product, and FIG.
) to (c) are a side view, a front view, and a plan view of the plate part of the hollow temporary molded product manufacturing apparatus, and FIG. 6 is an exploded view illustrating the configuration of the die portion shown in FIG. 5(a). It is. Hollow plate-shaped molded product, 2.3... plate part, 4... rib opposite part, 6.7 slit, 10... bed substrate, 11 spring, 20... manufacturing Device, 22...Dice, 23.24...Strip cutting blade, 26...Nozzle, 27...Driving means. Figure 1 Figure 5 (C) Figure 6

Claims (4)

[Claims] 1. It is composed of a pair of plate parts having wide surfaces facing each other, and a plurality of rib plate parts integral with the plate part and provided in the shape of a shelf between the pair of plate parts in a direction substantially perpendicular to the plate parts, and A hollow plate-shaped molded product made of soft plastic, in which slits of a predetermined width are formed in parallel at predetermined intervals in a direction orthogonal to the longitudinal direction of the rib plate parts in the pair of plate parts, the slits being A hollow plate-shaped molded product for a cast, which is used as a cast by bending the hollow plate-shaped molded product into a cylindrical shape with one axis parallel to the forming direction of the hollow plate-shaped product as a central axis. 2. It is composed of a pair of plate parts having wide surfaces facing each other, and a plurality of rib plate parts integral with the plate part and provided in the shape of a shelf between the pair of plate parts in a direction substantially perpendicular to the plate parts, and A hollow plate-shaped molded product made of soft plastic, in which slits of a predetermined width are formed in parallel at predetermined intervals in a direction orthogonal to the longitudinal direction of the rib plate parts in the pair of plate parts, A hollow plate-shaped molded product for a bed that is used by laying a mat-like plate-shaped molded product on a large number of springs arranged on the bed substrate. 3. A hollow space composed of a pair of plate parts having wide surfaces facing each other, and a plurality of rib plate parts integral with the plate part and provided in the shape of a shelf between the pair of plate parts in a direction substantially perpendicular to the plate parts. When extruding a plate-shaped molded product, a pair of upper and lower belt-shaped cutting blades, which are provided near the molded product discharge port and have a length approximately equal to the width of the molded product discharge port, are inserted into and removed from each plate portion at a predetermined period. manufacturing a hollow plate-shaped molded product, characterized in that slits of a predetermined width are formed in parallel at predetermined intervals in a direction perpendicular to the longitudinal direction of the rib plate parts in the pair of plate parts by moving the plate parts. Method. 4. In manufacturing equipment that performs molding by continuously extruding heated and fluidized resin through a die, the molded product discharge port is a shallow box-shaped die equipped with a nozzle formed in a substantially rectangular shape, and the width of the molded product discharge port is a pair of band-shaped cutting blades having substantially the same length and disposed in parallel in a vertically reciprocating manner at a position a predetermined distance apart from the molded product discharge port toward the extrusion side; A manufacturing apparatus for a hollow plate-shaped molded product, comprising a drive means provided near a die and reciprocatingly interlocking a pair of band-shaped cutting blades.