JPH0624189Y2 - Edge-folding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an edge folding device, and more specifically to an edge folding device capable of reducing man-hours.

[Prior Art] Conventionally, there is a product (for example, instrument panel, trim, garnish, etc.) in which a cloth, leather, synthetic leather or the like is attached on a resin molded product in order to give a high-class feeling to automobile interior parts.

As a method of winding these, as shown in FIGS. 6 to 8, it is general to apply the adhesive 10 to the base material 52 or press-bond a cloth or the like with the adhesive in advance. After crimping, it is necessary to manually fold the edge portion 53 of the cloth 51 on the side opposite to the product design surface.

The following two devices are known to eliminate the manual folding of the edge portion 53.

One of the devices is, as shown in FIG. 9, a concave holding surface 2 for holding a sheet-like article 24 into which an edge 26 is folded.
There is known a device having a base portion 21 having 2 and a slide core 23 that laterally slides an end edge portion 26 of a sheet-like article 24 arranged on the base portion 21 (Japanese Patent Laid-Open No. Sho 6-66).
1-162335).

As another folding device, another known end portion is a casing 31, as shown in FIG. 10, and a lid 32 which is openably and closably attached to an upper opening of the casing 31 to hermetically seal the inside of the casing 31. An elastic film 33 having a peripheral edge fixed to the inner wall of the casing and airtightly partitioning into the upper and lower parts of the casing 31, a receiving mold 34 for arranging the sheet-like article 35 on the mold surface in the lower partitioning chamber, It is known that the sheet-shaped article 35 is clamped and fixed between the sheet-shaped article 35 and the receiving mold 34 via the membrane 33, and a vacuum suction apparatus 38 for evacuating the upper compartment. (JP-A-56-84959).

[Problems to be Solved by the Invention] In the case where the above manual work is performed by a person, large-scale equipment is not required, but a large number of man-hours are required, and it cannot be said that it is necessarily suitable for mass production.

In the above-mentioned device according to Japanese Patent Laid-Open No. 61-16233, since the slide core 23 does not operate up to the back surface of the base material 27, the edge portion 26 of the skin 25 cannot be folded back, so that the back surface of the base material 27 is not covered. The edge portion 26 cannot be adhered. Therefore, an unbonded portion remains on the edge portion 26 of the outer skin 25, and the unbonded region of the edge portion 26 must be manually performed after all.

In the device of the above-mentioned Japanese Patent Laid-Open No. 56-84959,
As shown in FIGS. 10 and 11, the edge 3 of the epidermis
The elastic film 33 and the vacuum suction device 38 are used to bond 7 to the back surface of the base material by a vacuum action. However, since this apparatus requires the vacuum suction device 38, the equipment tends to be complicated and the equipment cost tends to be high. Further, the casing 31 needs a sealing mechanism for enhancing the airtightness, which also tends to increase the equipment cost. Further, in this device, in the case of an article having a complicated shape, the elastic film may be difficult to follow the article shape even by vacuum.

The present invention has been made in view of the above points, and an object of the present invention is to provide an edge-folding device that is a simple facility that can reduce the number of steps without requiring manpower.

[Means for Solving the Problems] The edge-folding device of the present invention comprises a base having a concave holding surface for projecting and holding the edge of a sheet-like article into which the edge is folded, and an elastic material. An elastically deformable portion that bends the protruding end edge portion formed with respect to the concave sandwiching surface, and presses the end edge portion together with the elastic deformable portion against the recessed sandwiching surface to sandwich the edge edge portion and the like. And an elastic pressing portion formed of an elastic material that is folded into the above sheet-shaped article.

The elastically deformable portion is made of an elastic material, has a function of being bent with respect to the concave holding surface and returning to a substantially original state when released from the pressing portion. As the elastic material, foamed resin, foamed rubber, and natural rubber are preferable, and among them, natural rubber is more preferable because of its restoring property. Further, the elastically deforming portion may be any as long as it has an elastic action,
It may have a sheet shape or a plate shape.

[Operation] The operation of the device of the present invention and the method of folding the edge portion of the sheet-like article using this device are shown in FIGS. 2 to 5.

First, a predetermined sheet-shaped article 5 is placed on the concave holding surface 2 of the base 1. In this case, as shown in FIG. 2, in the sheet-like article 5, the edge portion 53 of the skin 51 is projected. Then, as shown in FIG. 3, this protruding edge portion 53
The elastically deforming portion 3 is slid laterally toward the central portion of the concave holding surface 2, and the edge portion 53 is bent inward. After that, as shown in FIG. 4, the elastic pressing portion 4 is lowered, and the elastic deforming portion 3 and the bent edge portion 53 are pressed against the concave holding surface 2 using the elastic pressing portion 4. And pinch. The adhesive is applied to the inner surface of the edge portion 53 or the upper and inner surfaces of the base material 52 in advance.

Therefore, the edge portion 53 is folded inside the sheet-like article 5, and the edge portion 53 and the base material 52 are bonded together.
After that, when the elastic pressing portion 4 is driven upward, for example, to release the pressing state, the elastic deformation portion 3 is restored to the original state, and the edge portion 53 is folded inside the base material 52 and The bonded product (shown in FIG. 5) can be removed.

[Advantageous Effects of Invention] The edge-folding device of the present invention comprises a base having a concave holding surface for projecting and holding the edge of a sheet-like article into which the edge is folded, and a protrusion made of an elastic material. An elastically deformable portion that bends the end edge portion that is bent with respect to the concave holding surface, and presses the end edge portion together with the elastic deformable portion against the concave holding surface to hold the end edge portion of the sheet-like article. And an elastic pressing portion formed of an elastic material that is folded inward.

Therefore, by using this device, since it has the above-mentioned action, the edge portion of the sheet-like article can be mechanically folded and bonded without manual labor, and therefore the number of steps can be reduced. Further, when mechanically folding and adhering, the concave holding surface of the base and the elastic pressing portion gently press the base material, the edge portion of the skin, and the elastically deforming portion without giving an impact to the holding. Therefore, the base material, the edge portion of the skin, and the elastically deformed portion are not damaged. Further, by using this device, the edge portion can be folded not only to the end surface of the epidermis but also to the back surface thereof, so that it can be automated even for a large adhesive area. Further, in this device, since it is not necessary to use a vacuum device and a casing, the equipment is simple and the equipment cost is low.

[Examples] The present invention will be described below with reference to specific examples.

As shown in FIG. 1, the edge-folding device of this embodiment mainly comprises a base portion 1, an elastically deforming portion 3, and an elastic pressing portion 4.
And. This device is applied to the manufacture of garnish, which is an automobile part.

The base portion 1 has a concave holding surface 2 that projects and holds an edge portion 53 of the skin 51 of the sheet-like article 5 to be folded. The base 1 is of a fixed type and is installed and fixed on a pedestal 6.

The elastically deformable portion 3 is made of an elastic material made of natural rubber. The elastically deformable portions 3 are on both the left and right sides and are plate-shaped members. The elastically deformable portion 3 slides the surface of the base portion 1 left and right. This device has an air cylinder 7 for sliding the elastically deformable portion 3 left and right. In addition, 8 is a linear bush.

As shown in FIG. 4, the elastic pressurizing portion 4 presses the end edge portion 53 together with the elastic deforming portion 3 against the concave holding surface 2 to hold the end edge portion 53, and the end edge portion 53 is pressed into the sheet-like article 5. It is for folding inside. The outer peripheral shape of the elastic pressurizing portion 4 is substantially similar to the inner surface shape of the concave holding surface 2. The pressurizing portion 4 is made of an elastic material such as urethane rubber. The elastic pressurizing unit 4 is vertically driven by an air cylinder 9 for pressurizing unit.

The apparatus of this example was used as follows to produce a product (garnish). The method of use is shown in FIGS.

First, as shown in FIG. 2, a base material 52 made of ABS, PP or the like, and an edge portion 5 bonded to the surface of the base material 52.
A sheet-like article 5 composed of a skin 51 made of cloth from which 3 is protruding is prepared. The sheet-shaped article 5 is used for manufacturing a garnish which is an automobile part. The sheet-like article 5 is placed on the concave holding surface 2 of the base 1. In this state, the edge 53 of the sheet-like article 5 projects from the surface of the base 1.

Next, as shown in FIG. 3, the two elastically deformable portions 3 are slid inward by the air cylinders for elastically deformable portions (7 in FIG. 1) so that the end edges 53 are formed on the upper end surface of the base material 51. Defeat it. In this case, the adhesive is previously applied to the inside of the edge portion 53. An adhesive may be applied to the upper end surface and the inner side surface of the base material 51. As the elastically deformable portion 3 slides inward on the left and right sides, the end edge portion 53 is bent inward.

Next, as shown in FIG. 4, the elastic pressurizing portion 4 is lowered by using the pressurizing portion cylinder (9 in FIG. 1) to clamp the elastically deforming portion 3 and the end edge portion 53 in the concave shape. It was pressed against the surface 2 and clamped. In this case, the elastically deformable portion 3 and the end edge portion 5
3 is in a state of being folded inward. At this time, since the adhesive is applied to the predetermined position, the base material 52 and the skin 51 are adhered.

Next, the air cylinder for the pressurizing section (9 in FIG. 1) was driven to raise the elastic pressurizing section 4, and then the product was taken out from the base 1. The state of the product taken out is shown in FIG. As a result, a product (garnish) in which the edge portion 53 was folded inward and adhered was manufactured.

According to the above method using the apparatus of the present embodiment, the edge portion 53 of the skin 51 of the sheet-like article 5 can be mechanically folded and adhered, so that the number of steps can be reduced. Further, when mechanically folding and adhering, the base 52 is pressed by the concave holding surface 2 of the base 1 and the elastic pressing portion 4.
Since the edge portion 53 of the outer skin 51 and the elastically deformable portion 3 can be gently pressed and clamped without giving an impact, the base material 52
The edge portion 53 of the outer skin 51 and the elastic deformation portion 3 are not damaged. Further, the elastically deformable portion 3 that is repeatedly used can increase its bending durability. With this device,
Since the end edge portion 53 can be folded and adhered not only to the upper end surface of the base material 52 but also to the inner side surface, the adhering area can be widened. In addition, this apparatus does not require a vacuum suction device, and the air cylinder 7 and the air cylinder 9
By having the elastically deformable portion 3, the end edge portion 5 is provided.
Since 3 can be bonded even to the inner surface of the base material, the equipment is simpler and less expensive than the conventional equipment.

Furthermore, the present invention is not limited to the specific examples described above, and various modifications may be made within the scope of the present invention in accordance with the purpose and application.

That is, the elastic portion may be fixed by using the base portion as a movable type. The planar shape of the elastically deformable portion is not limited to the flat plate shape as described above, and can be various shapes, and the number thereof may be one or three or more, which are the edges of the sheet-like article. Various selections are made according to the shape of the part. For example, if the edge portion has a donut shape, a plurality of elastically deformable portions may be arranged in the circumferential direction so that the edge portion can be folded in the centripetal direction. In this case, it is preferable that the end edge portion is provided with a plurality of slits in the centripetal direction or has a pleated shape so as not to overlap each other when folded.

[Brief description of drawings]

FIG. 1 is an explanatory partial cross-sectional view of an edge-folding device according to an embodiment. FIG. 2 is an explanatory cross-sectional view of essential parts showing a state in which a sheet-shaped article is arranged on the concave holding surface of the base in the embodiment. FIG. 3 is an essential part explanatory sectional view showing a state in which the elastically deformable portion is slid inward after the state shown in FIG. FIG. 4 is an explanatory cross-sectional view showing a state in which the elastic pressing portion is lowered to press the elastically deforming portion and the end edge portion against the concave holding surface after the state of FIG. FIG. 5 is an explanatory sectional view of a product manufactured in the embodiment. 6 to 8 are explanatory views showing a conventional method of folding an edge portion, and FIG. 6 is a main part showing a state in which an adhesive is applied on the surface of a base material to adhere a skin. It is an explanatory sectional view. FIG. 7 is an essential part explanatory cross-sectional view showing a state in which after the state of FIG. 6 a skin is adhered to the surface of the base material and the edge portion thereof is to be folded inward. FIG. 8 is an explanatory cross-sectional view of an essential part showing a state after folding and adhering the edge portion after the state of FIG. FIG. 9 is an explanatory sectional view of a conventional edge-folding device. FIG. 10 is a schematic explanatory sectional view of another conventional edge-folding device. FIG. 11 is a cross-sectional view of essential parts showing a state in which the edge portion is folded in the edge portion folding device shown in FIG. 1, 21 ... Base part, 22, 22 ... Recessed sandwiching surface 3 ... Elastically deformable part, 4 ... Elastic pressing part 5, 24, 35 ... Sheet-like article 51, 25 ... Skin, 52, 27 ... ... Base material 53, 26, 37 ... Edge 6 ... Stand 7 ... Air cylinder for elastically deforming part 8 ... Linear bushing 9 ... Air cylinder for pressurizing part 10 ... Adhesive, 23 ... Slide Core 31 ... Casing, 32 ... Lid 33 ... Elastic film, 34 ... Receiving type 36 ... Clamping device, 38 ... Vacuum suction device

Claims (2)

[Scope of utility model registration request] 1. A base portion having a concave holding surface for projecting and holding the edge portion of a sheet-like article into which the edge portion is folded, and the projecting edge portion formed of an elastic material. And an elastically deformable portion formed of an elastic material that presses the edge portion together with the elastic deformation portion against the concave holding surface and folds the edge portion inside the sheet-like article. An edge-folding device comprising: a pressure part. 2. The edge-folding device according to claim 1, wherein the elastically deformable portion is sheet-shaped.