JP3192540B2 - Fiber molded body manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding box having a cavity in accordance with the shape of a molding to be formed, a fiber opening machine for opening fibers, and a method for forming fibers opened by the fiber opening machine. The present invention relates to an apparatus for producing a fibrous molded body, comprising a blow duct for feeding and filling a cavity in a box and a means for feeding the opened fibers into the cavity via the blow duct, for example, a fan.

[0002]

2. Description of the Related Art As a conventional method for producing a fiber molded article,
For example, there is known a method in which raw cotton is spread, laid on a card, spun as a web, and formed into a fiber molded body of a web layer by forming the web into a certain thickness and shape. In addition, there has been proposed a method in which such a fiber molded body is formed by sequentially packing the fiber molded body in, for example, a side ground of a futon using an air flow.

[0003]

However, in the manufacturing method of forming a fiber molded body in a certain area by using such an air flow, it is difficult to form a uniform shaped material having a uniform weight distribution, and high quality Things were difficult to obtain.

[0004] Therefore, the opener and the blower are separately provided,
A configuration has been proposed in which both units are communicated with a duct and an outlet is provided in a downstream region of the blower. By the way, in the case of such a configuration, a high-quality product can be manufactured only with a simple shape such as the side lining of a futon, but when forming various special shapes, ,
There is a possibility that an uneven portion or a missing portion may occur depending on the shape, which is a problem.

[0005] In view of the above-mentioned drawbacks, the present invention provides a fiber molding method capable of producing a high-quality fiber without unevenness or underfill in the weight distribution of each part even when molding various shapes. It is an object of the present invention to provide a body manufacturing apparatus.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a molding box having a cavity in conformity with the shape of a molding to be formed, a fiber opening machine for opening fibers, and A blow duct for feeding and filling only the fibers opened by the spreader into the cavity in the forming box, and a means for feeding the opened fibers to the cavity through the blow duct. In the manufacturing apparatus, a control means for controlling the flow direction of the fiber is provided in the blow duct, and the cavity is filled while changing the flow direction of the fiber in the blow duct by the operation of the control means.

[0007]

According to the present invention, a molding box having a cavity corresponding to a shape to be molded is prepared, and only fibers opened from a fiber blowing port are fed into the cavity through a blowing duct to be filled. Has become
In consideration of the fact that the opened fiber to be fed is likely to be deposited and filled at a relatively high density in the area directly facing the fiber blowing port, the blowing duct adjacent to this fiber blowing port is
By providing a means for controlling the direction in which the fibers flow, even when molding various shapes, it is possible to produce a high-quality product without unevenness or underfill in the weight distribution of each part. .

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

In the embodiment shown in FIG. 1, a forming box 1 having a cavity 1A (described later) according to the shape of a formed body to be formed, an opening machine 2 for opening fibers,
A blow duct 3 for feeding and filling the fiber opened by the spreader 2 into the cavity 1A in the molding box 1, and a means for feeding only the opened fiber to the cavity 1A via the blow duct 3. And control means 5 for controlling the direction in which the fibers flow in the blowing duct 3. By the operation of the control means 5, the cavity 1A is filled while changing the flow direction of the fiber in the blowing duct 3. The feeding means 4 comprises a fan, and the control means 5 comprises an operating plate 51 having one end rotatably mounted in the blowing duct 3 and an air cylinder 5 for operating the operating plate 51.
2 The operating plate 51 is made of a steel plate, and one end of the operating plate 51 serves as a hinge 53, and the operating plate 51 can rotate around the hinge 53.

FIG. 2 is a schematic view of the apparatus of FIG. 1 as viewed from above. The length of the blowing duct 3 is about 1.5 m,
It has a rectangular cross-sectional dimension of 0 × 400 (unit mm), the operation plate 51 has a size of 200 × 250 (unit mm),
The amount of movement of the tip of the operation plate 51 was about 50 mm. The two air cylinders 52 alternately protrude the two operation plates 51 every 3 seconds.

FIG. 3 shows the internal structure of the spreader 2 and the feeding means 4.

FIG. 4 shows details of the control means 5 and shows a state in which the air cylinder 52 is not operating.

The control means 5 shown in FIG. 5 is an example in which a flexible plate such as a highly elastic rubber plate is used as the operating plate 51 at the tip of the air cylinder 52. By pressing the flexible plate with the rod of the air cylinder 52, the center of the flexible plate is expanded toward the center of the blow duct 3. The two flexible plates were alternately projected for 3 seconds. Both sides of the flexible plate are fixed to the inner wall of the blow duct 3. Further, the number of flexible plates may be one.

The control means 5 shown in FIGS. 6 and 7 comprises a part of the blowing duct 3 as a bellows-shaped hose, and a ring 55 which is rotated by a motor 54 is attached to the bellows-shaped hose. Is rotated together with the ring body 55. The bellows-shaped hose portion of the blow-in duct 3 is formed in a U-shape, and rotates once around the motor 54 in 10 seconds.

The control means 5 shown in FIG.
Are formed by flexible portions 31, and the flexible portions 31 vibrate by wind pressure from the fan 4 to change the flow direction of the fibers in the duct 3.

The control means 5 shown in FIG. 9 has the same concept as that of FIG. 8, and does not have the flexible portion 31 formed on the duct 3 but has flexible portions on the respective sides supporting the fan 4 and the duct 3 of the molding box 1. The portion 31 is formed.

The control means 5 shown in FIG. 10 constitutes a portion of the blowing duct 3 connected to the forming box 1 at a tip 32 which swings right and left, and this tip 32 is driven by a motor 54 as shown in FIG. It is designed to reciprocate within a predetermined range. The tip 32 is provided with a structure such as a bellows and a slider on the side of the forming box 1 so that the tip 32 moves to the left and right while maintaining airtightness with respect to the forming box 1, and the tip 32 is attached to these.

In the embodiment shown in FIG. 12, a pair of air blowing means 56 is provided obliquely to the blowing duct 3, and air is blown into the blowing duct 3 alternately from these air blowing means 56. is there. These means 56 are connected to an air compressor, not shown. Further, the blow duct 3 is provided diagonally so that the blown air is directed toward the molding box 1. Further, the oblique angle can be configured to be variable.

FIG. 13 shows the cavity 1 in the molding box 1.
5A shows a plan shape, and has a symmetrical shape at the center line Y. The dimensions indicated by reference signs a to f are 4
00mm, 300mm, 300mm, 500mm, 400mm, 1
00 mm. When the fibers spread by the spreader 2 from the duct 3 are fed into the cavity 1A and filled, the weight distribution (%) as shown in the following Table 1 is obtained at each of the parts A to D of the cavity 1A. became. When the weight of the fiber filled in the cavity 1A is 100, 1
The distribution ratio of the 00 fiber to each part A to D is shown.

[0020]

[Table 1]

The comparative example in Table 1 shows an example in which the control means 5 is not provided. Example 1 is as shown in FIG. 1, Example 2 is as shown in FIG. 5, and Example 3 is as shown in FIG. 6 and 7
It is shown in FIG. In Examples 1 to 3, each part of A and D and each part of B and C do not have a bias in the weight distribution, but in the comparative example, the bias of the weight distribution was observed in the central portion (B and C).

[0022]

As described above, according to the present invention, the blowing duct is provided with a control means for controlling the flow direction of the fiber, and the operation of this control means changes the flow direction of the fiber in the blowing duct to the cavity. Since the filling is performed, a high-quality product without uneven filling in each part and no underfill can be produced.

[Brief description of the drawings]

FIG. 1 is a plan view showing a preferred embodiment of the present invention.

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a cross-sectional view of a location of a fiber opening device and a feeding unit.

FIG. 4 is a side sectional view of the control means shown in FIG. 1;

FIG. 5 is a sectional view showing another embodiment of the control means.

FIG. 6 is a plan view showing still another example of the control means.

FIG. 7 is a front view of FIG. 6;

FIG. 8 is a plan view showing still another example of the control means.

FIG. 9 is a plan view showing another example of the control means.

FIG. 10 is a plan view showing another example of the control means.

FIG. 11 is a front view of FIG. 10;

FIG. 12 is a sectional view showing still another example of the control means.

FIG. 13 is a plan view showing each portion of a cavity into which fibers are fed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Forming box 2 Spreader 3 Blowing duct 4 Means for feeding 5 Control means

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-280151 (JP, A) JP-A-6-294061 (JP, A) JP-A-5-508564 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) D04H 1/00-18/00 B27N 1/00-9/00 B68G 1/00-15/00

Claims (7)

(57) [Claims] 1. A forming box having a cavity corresponding to the shape of a molded body to be formed therein, a fiber opening machine for opening fibers, and only the fibers opened by the fiber opening machine are fed into a cavity in the forming box. In a manufacturing apparatus of a fiber molded body, comprising: a blowing duct for feeding and filling; and a means for feeding the opened fiber to a cavity through the blowing duct, a control for controlling a direction in which the fiber flows into the blowing duct. Means for filling a cavity with changing the flow direction of the fiber in the blowing duct by operating the control means. 2. The control means according to claim 1, wherein said control means comprises an operating plate having one end rotatably mounted in said blowing duct, and means for rotating the other end of said operating plate. 2. The apparatus for producing a fiber molded article according to claim 1. 3. The control means comprises a flexible plate fixed on both sides to the inner wall of the blow duct, and means for expanding a central portion of the flexible plate toward the center of the blow duct. The apparatus for producing a fiber molded product according to claim 1, wherein: 4. The control means according to claim 1, wherein a part of the blowing duct is formed into a bellows-shaped hose, the hose part is bent into a dogleg shape, and the bent part is rotated. Item 2. An apparatus for producing a fiber molded article according to Item 1. 5. The control means is characterized in that both ends or both ends of the blowing duct are formed with flexible portions on the fan side and the forming box side, and the flexible portions vibrate by wind pressure of the fan. The apparatus for producing a fiber molded body according to claim 1, wherein: 6. The control means is configured so that a part of the blowing duct on the forming box side is swingable with respect to the other part, and the swinging tip part can move left and right while maintaining airtightness with respect to the forming box. 2. The device according to claim 1, wherein
2. The apparatus for producing a fiber molded article according to claim 1. 7. The apparatus according to claim 1, wherein the control means is configured to blow air from the air blowing means provided in the blowing duct into the blowing duct.