JPH042797Y2 - - Google Patents

Description

[Detailed explanation of the invention] <Technical field> This invention relates to a star removal device for sheet molded products.
After multiple molded products are molded onto a single synthetic resin sheet, when the outer shape of each molded product is trimmed and the individual molded products are separated and collected, star-shaped scraps are formed on adjacent parts of each molded product. It concerns a device for extracting only stardust.

<Prior art> The trimming process for the sheet molded product is as follows:
First, the molded sheet is punched and cut along the outline of each molded product using a Thomson blade or the like to form cutting lines. At this time, among the outline of the molded product,
Some parts are not cut and left as partial continuous parts to prevent each molded product and the entire molded sheet from disintegrating into pieces.
Thereafter, only the molded product portion of the molded sheet is punched out using a press or the like, and the frame-shaped scrap portion around the outer periphery of the sheet and the individual molded products are separated and collected.

If the frame-shaped scrap portion on the outer periphery of the sheet is clamped with an appropriate holding mechanism, it is relatively easy to separate it from the molded product and collect it.
However, in addition to the frame-shaped scrap part on the outer periphery, the molded sheet has scraps that occur in adjacent parts of each molded product.
A star-shaped scrap part is generated. Since these star shavings are located adjacent to the molded products and are extremely small, it is difficult to hold or clamp them individually, making it difficult to separate them from the molded products.

Therefore, conventionally, after cutting lines are formed on the molded sheet, only the star parts are punched out and removed, and then the molded product is separated from the frame-shaped scrap part on the outer periphery, and the molded products are separated and recovered. was.

And in order to separate and remove the star scum mentioned above,
A thin dowel pin or the like is pressed against the stardust to separate it from the surrounding molded part, and only the stardust is extracted and removed.

However, if the stardust separated as described above is not collected and removed reliably, the static electricity generated on the molded sheet and stardust may cause the stardust to adhere to the molded product. be. If star dust remains attached to the molded product, it becomes a huge nuisance when using the molded product, and in the case of food packaging containers, it is also unfavorable from a hygienic standpoint and reduces the product value. I had a problem that was slowing me down.

In addition, it is very troublesome and not practical in terms of cost to inspect all molded products to see if star dust has adhered to them.

<Purpose> Therefore, the purpose of this invention is to solve the problems of the above-mentioned prior art and to provide a star collecting device that can reliably separate and remove star debris.

<Structure> The structure for achieving the above object includes a push-in cylinder part smaller than the outer diameter of the star-shaped scrap part provided on the molded sheet, and a push-in cylinder part below the push-in cylinder part. and a passage tube part having windows on all sides of the outer periphery to form a downward space through which the scrap parts can freely pass through, and is inserted into the intersection of the valleys between the molded products of the molded sheet on which the star-shaped scrap parts have been formed. , a star-shaped bushing for supporting the star-shaped scrap part from below by the push-in cylinder part; and a star-shaped bushing that is inserted into a valley part between the molded products, which is formed so as to protrude outward in all four directions. a vertical thin plate-shaped support wall for supporting the molded sheet from below; and the star scrap, which is inserted from above the molded sheet into the push-in cylinder part of the star-removing bushing and is movable up and down to the passage cylinder part. The invention is characterized in that it includes a thrust rod having a piercing portion for the shaped scrap portion.

<Example> Next, an example of this invention will be described below with reference to the drawings.

First, an example of a molded sheet S used in the star-removing device of this invention is shown in Fig. 3, and it is made from a synthetic resin sheet such as a foamed polystyrene sheet by so-called sheet forming means such as vacuum forming and pressure forming. In this case, a predetermined molded product shape is bulged. In the case of the figure, a plurality of molded products A each serving as a substantially rectangular cup-shaped container are arranged side by side vertically and horizontally. Note that the illustrated molded sheet S is a rectangular veneer-like sheet cut to a certain area, but a long sheet with molded products A continuously arranged side by side and molded is used. In some cases.

Cutting lines C are formed along the outer shape of each molded product A on the molded sheet S molded as described above. Further, a portion of the cutting line C is interrupted to form a continuous portion b in which both side portions of the sheet are continuous. Then, the outer periphery of the cutting line C, that is, the outermost periphery of all the molded products A, becomes a frame-shaped scrap part d, and a substantially diamond-shaped star scrap h is placed in the middle part of each molded product A surrounded by the cutting line C. is formed. Also, the cutting line C that separates this star scum h from the surrounding molded product C,
A continuous portion b is formed in a part so that the star shavings h and the surrounding molded product A are not separated but are in a continuous state.

This devised star removing device is used to separate and remove only the star scum h from the formed sheet S as described above.
It is shown in FIGS. 1 and 2.

Reference numeral 1 denotes a star-removing bush, on which a molded sheet S is placed and a star-removal operation is performed. A cylindrical push-in tube part 10 having an inner diameter smaller than the outer diameter of the star dust h is formed in the upper part of the star dusting bush 1. Push cylinder part 1
The inner edge of the upper end of 0 is cut off diagonally,
This allows for smooth insertion of star shavings h, which will be described later. At the bottom of the push-in cylinder part 10,
With an inner diameter larger than the push-in cylinder part 10, the star scum h
A passage tube portion 11 is formed through which the tube can pass. Moreover, the four outer circumferences of the upper part of the passage tube part 11 are cut out to form a window part 12, so that the star scum h can pass downward or fall smoothly.

Furthermore, a disk-shaped pedestal part 13 for mounting is extended at the lower part of the passage tube part 11, and by using this pedestal part 13, a plurality of star-shaped bushings 1 can be mounted on the fixed base 2. They are arranged and fixedly attached at positions corresponding to the respective star spots h of the molded sheet S.

Further, on the outer periphery of the star-shaped bushing 1, a vertical thin plate-shaped support wall 3 is formed to protrude on the fixed base 2 toward the outside of the star-shaped bushing 1 in all four directions. When the molded sheet S is placed on the upper surface of the removing bush 1, the valley portion between the molded products A is placed at the upper end of the support wall 3 to prevent the molded sheet S from moving or deforming during star removal work. This ensures that it can be supported in place without any problems.

Next, reference numeral 4 denotes a stabbing rod, which is shaped like a thin round bar, and has a needle-shaped piercing part 40 formed at the lower end of the piercing rod.
It is now possible to pierce Hoshikuzu H. Then, as shown in FIG. 2, in order to pull out a plurality of star scum h at the same time, a plurality of push rods 4 are attached to the lower surface of the mounting board 5, and this mounting board 11 is
It is provided so that it can be raised and lowered by means such as a cylinder mechanism.

The operation of the star collecting device having the above structure is sequentially shown in FIGS. 4 to 8.

First, as shown in Figure 4, the star-picking button 1
The molded sheet S is placed above it. At this time, with the molded product A protruding downward, the intermediate valley portion of the molded product A is placed along the support wall 3, and the star shavings h are placed in the center of the star-removing bush 1. Do it like this.

In this state, the stabbing rod 4 is lowered and the stabbing part 10 is stabbed into the center of the star scum h. When the push rod 1 is lowered and inserted into the pushing cylinder part 10 of the star-removing bush 1, as shown in FIG. At the same time, it is slightly deformed and pushed into the push-in cylinder part 10, and at the same time, it is torn off and separated from the molded product A along the surrounding cutting line C.

Then, as shown in FIG.
When pushed down, the star scum h is inserted into the passage tube portion 11 having a large inner diameter, and the outer periphery of the star scum h, which had been slightly deformed, is restored to a horizontal state again.

Thereafter, as shown in FIG. 7, when the push rod 4 is raised, the outer periphery of the star shavings h is caught on the lower end of the pushing cylinder part 10.

Next, as shown in FIG. 8, when the thrusting rod 1 is pushed in and returned upward from the cylindrical portion 10 to above the star-removing bushing 1, the piercing portion 40 comes out of the star scum h, and only the star scum h passes through. It remains in the cylindrical part 11 and falls downward. Note that the star shavings h that have fallen from the passage tube portion 11 are collected by appropriate means.

In this way, the stardust h is extracted from the formed sheet S and separated and removed.

Among the star-removing devices described above, the push-in cylinder portion 10 of the star-removal bush 1 has a push rod 4 corresponding to the outer diameter of the star waste h to be separated and removed, so that it is easy to push in the star waste h. When rises,
The inner diameter is formed to such an extent that the star shavings h can be reliably caught on the lower end of the push-in cylinder part 10 and pulled out.
That is, it is sufficient to form the inner diameter to be a little smaller than the outer peripheral tip of the star scum h, which is usually about 20 to 30 mm. Moreover, as for the shape of the push-in tube part 10, although a cylindrical one is easy to manufacture, it can also be made into a square or other cylindrical shape depending on the shape of the star scum h.

Next, the passing cylinder part 12 only needs to have an inner diameter that allows the stardust h inserted through the upper push-in cylinder part 10 to return to a substantially horizontal state.
In order to allow the star scum h to fall smoothly downward and be collected, it should be formed to a size that will not allow the star scum h to get caught inside. In addition, the passage tube part 12 is provided with an isolation mechanism and a collection mechanism from the molded sheet S side in order to smoothly collect all the separated stardust h without adhering or scattering to the molded sheet S or other parts of the device. It is effective as a guide mechanism at times.

The window portion 12 formed in the passage tube portion 11 is effective for allowing the star scum h to fall smoothly without getting caught on the inner wall of the passage tube portion 12, and the window portion 12 is formed at a position where the star scum h What is necessary is to form it at a position corresponding to the outer peripheral tip.

Furthermore, the supporting walls 3 provided on all sides of the star-shaped bushing 1 are effective for holding the molded sheet S reliably, but in addition to those in the form of a continuous thin plate, they are also compatible with the structure of the valley part of the molded product A. The support wall 3 may be formed intermittently in the longitudinal direction, and if the width of the valley portion of each molded product A is narrow, the upper end of the support wall 3 may be formed into a shape in which both sides are thinly shaved. Good.

Next, the piercing portion 40 formed on the piercing rod 4 may be a needle or pin-shaped object having an appropriately structured structure, as long as it has a sharp tip and can pierce the star scum h, that is, the formed sheet S. , it is also possible to form a plurality of piercing portions 40 on one piercing rod 4.

The molded sheet S used in the star-removing device of this invention may include foamed sheets made of various thermoplastic resins such as foamed polystyrene sheets, non-foamed sheets made of the above-mentioned thermoplastic resins, or foamed sheets and non-foamed sheets. Alternatively, various packaging containers such as cups and trays, and other molded products A can be used freely, such as by molding a laminated film sheet or the like.

<Effects> According to the star removing device of this invention configured as described above, only the star shavings h of the formed sheet S are pushed into the pushing cylinder portion 10 of the star removing bush 1 with the push rod 4. , to separate the stardust h from other parts of the molded sheet S.

A piercing part 40 is formed at the tip of the piercing rod 4, and it is pushed into the pushing cylinder part 10 while being stuck into the star scum h, so that when separating the star scum h from the molded sheet S, it is pulled securely. It can be shredded, and the star shavings h may shift from the center of the punching rod 4, or the ramming rod 4 may slip, causing the star scum h to break into the formed sheet S.
Stardust h can be reliably separated without remaining on the side or clogging the inside of the pushing cylinder part 10.

Next, the star scum h is the piercing part 40 of the piercing rod 4.
The star scum h is lowered to a lower space formed by the passing cylinder part 11 which is larger than the pushing cylinder part 10, and then when the thrust rod 4 is returned and raised, the star scum h is Also small,
It is hooked on the lower end of the pushing cylinder part 10, the piercing part 40 is pulled out from the star shavings h, and the star scum h is dropped below the star collecting bush 1 and collected, so that the star scum h is above the star collecting bush 1. The star scum h can be reliably separated from the molded sheet S and collected without adhering to the side of the formed sheet S or remaining stuck in the piercing part 40, and can be collected from the piercing part 40 of the piercing rod 4. Without having to pull out the star scum h one by one, it is automatically removed, and the stabbing rod 4 can be used repeatedly as it is.

In addition, when hooking the star dwarf h on the lower end of the pushing tube part 10 and dropping it downward to collect it, pierce the star dwarf h with the stabbing part 40, and make sure that the centers of the stabbing rod 4 and the star dwarf h align accurately. Since it is held in a hanging state, the position of the star shavings h may shift and the pushing cylinder part 10
There is no possibility that the outer periphery of the star shavings h will be caught on the lower end of the pushing cylinder part 10 and will be separated from the push rod 4 and fall downward. do.

As described above, according to this invention, the stardust h can be reliably separated and extracted from the formed sheet S, and the separated stardust h can be reliably dropped and collected, especially since the stardust h is charged with static electricity. However, since the separated stardust h does not return to the upper part of the pushing tube part 10 and can be collected reliably separated from other parts of the molded sheet S, there is no need to worry about the stardust h adhering to the molded sheet S. do not have. Therefore, it is possible to completely eliminate the trouble of inspecting each molded product A for the adhesion of star scum h, thereby increasing the commercial value of sheet molded products and reducing inspection costs. It is something that can be effective.

[Brief explanation of the drawing]

The figure shows an example of this invention.
The figure is a perspective view, FIG. 2 is a schematic structural diagram of the entire apparatus, FIG. 3 is a plan view of the molded sheet used, and FIGS. 4 to 8 are sectional views sequentially showing the operating steps. 1...Star-receiving button, 10...Pushing cylinder part, 11...Passing cylinder part, 4...Pushing rod, 40...
Pierced part, S...molded sheet, h...star scum.

Claims (1)

[Scope of utility model registration request] A push-in cylinder part smaller than the outer diameter of the star-shaped scrap part provided on the molded sheet, and a window part on all sides of the outer periphery to form a downward space through which the star-shaped scrap part can freely pass under the push-in cylinder part. and a passing cylinder part having the above-mentioned star-shaped scrap part, which is inserted into the intersection of the valleys between the molded products of the molded sheet on which the star-shaped scrap part has been formed, and supports the star-shaped scrap part from below by the push-in cylinder part. and a vertical thin plate-shaped support that is inserted into the valley between the molded products and supports the molded sheet from below, which is formed by protruding outward on all four sides of the star-shaped bush. a wall, and a push rod which is provided from above the molded sheet through the push-in cylinder of the star-removal bushing and is movable up and down to the passage cylinder, and has a piercing part for the star-shaped scrap part. A device for removing stars from sheet molded products.