JPH06594U - Noise reduction device for transfer press - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the working environment by reducing the noise emitted from the opening of the soundproof cover. A soundproof duct 8 for reducing noise emitted from the opening 4a is provided in an opening 4a of a soundproof cover 4 provided on the work unloading side of the press body 1. Since the noise emitted from 4a can be effectively reduced, the working environment can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a transfer-less noise reduction device that reduces noise emitted from an opening of a soundproof cover.

[0002]

[Prior art]

 When working with a conventional press, loud noise is generated during the work and the surrounding environment deteriorates. For this reason, conventionally, for example, as disclosed in JP-A-54-10478, JP-A-61-205069, and JP-B-3-29026, a soundproof cover is provided on the press body to reduce noise during work. The thing of reducing it is proposed.

[0003]

[Problems to be solved by the device]

 However, in the case of a transfer press equipped with a transfer feeder that conveys the work inside the press body, it is necessary to provide an opening in the soundproof cover in order to carry out the completed work with the transfer feeder. Loud noise is emitted from the opening of the cover. Particularly on the work unloading side of the press body, there are workers who inspect the works discharged by the transfer feeder and transported by the discharge conveyor and transfer them to pallets, etc., and these workers are constantly discharged from the opening. It was necessary to work in a noise environment exceeding 90 dB, and improvement of the work environment was desired. The present invention has been made in response to such a demand, and an object thereof is to provide a noise reducing device for a transfer press capable of significantly reducing noise emitted from an opening of a soundproof cover.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a soundproof duct at the opening of a soundproof cover provided on the work carrying-out side of the press body for reducing noise emitted from the opening.

[0005]

[Work]

 With the above configuration, noise emitted from the opening of the soundproof cover can be significantly reduced, so that the working environment can be improved.

[0006]

【Example】

 An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall view of a transfer press provided with noise countermeasures. A crown 1a provided on an upper portion of the press body 1 is covered with a soundproof barrier 2 and openings in front and rear of the press body 1 are 2 A double-window safety shutter 3 and openings on both sides are covered with a soundproof cover 4. A transfer feeder (not shown) is provided in the press body 1, and the transfer feeder is used to carry in the work and convey it between the processing stations. The soundproof cover 4 is discharged to the transfer station 6 side through the opening 4a, and after being inspected, it is transferred to a pallet (not shown).

On the other hand, a soundproof duct 8 is attached to the soundproof cover 4 provided with an opening 4a for discharging the work. The soundproof duct 8 has a duct main body 8a attached to the opening 4a of the soundproof cover 4, and in the duct main body 8a, a discharge passage 8b is formed which is slanted downward in the work discharge direction. A comb-shaped soundproof member 9 is arranged above and below the discharge passage 8b. The soundproof member 9 is composed of a plurality of cases 9a arranged at equal intervals in a direction orthogonal to the work discharge direction, and a sound absorbing material 9b made of glass wool filled in the cases 9a. The case 9a is formed of a perforated plate into a flat box shape, and the lower surface of the case 9a provided above the discharge passage 8b and the upper surface of the case 9a provided below the discharge passage 8b are the discharge passage 8b. Is inclined along.

The operation will be described next. The work which has been processed and formed at each processing station of the press body 1 is discharged by the discharge conveyor 5 through the soundproof duct 8 to the transfer station 6 side, and undergoes inspection. And then transferred to the pallet 7. In addition, the operation sound of the press body, the molding sound, and the operation sound of the transfer feeder generated in the press body 1 during the press work are blocked by the soundproof barrier 2 and the double safety shutter 3 which cover the press body 1. However, a part of the noise reaches the inside of the soundproof duct 8 from the opening 4a of the soundproof cover 4 provided on the work unloading side, but the sound is absorbed when passing between the sound absorbing members 9 provided so as to be parallel to the noise propagation direction. Since it is absorbed by the material 9b and is absorbed by the soundproof duct 9b, the noise emitted from the opening 8c of the soundproof duct 8 can be greatly reduced.

By the way, when the noise of the transfer station 6 was measured with the soundproof duct 8 installed, the noise level, which was always 90 dB or more in the past, was reduced to 85 dB, and the soundproofing effect could be confirmed. . In the above embodiment, the case where the soundproof duct 8 is installed on the work carry-in side has been described, but by installing it on the work carry-in side, noise emitted from the work carry-in side can be reduced.

[0010]

[Effect of device]

 As described in detail above, this invention has a soundproof duct provided at the opening of the soundproof cover provided on the work discharge side of the press body to reduce the noise emitted from the opening. The work environment of the transfer station can be greatly improved on pallets. Further, since a plurality of sound absorbing members are provided in the soundproof duct so as to be parallel to the direction of noise propagation, noise can be absorbed when the noise passes between these sound absorbing members, so noise can be efficiently reduced. become able to.

[Brief description of drawings]

FIG. 1 is an overall view of a transfer press equipped with a noise reduction device according to an embodiment of the present invention.

FIG. 2 is a side view of a noise reduction device according to an embodiment of the present invention.

FIG. 3 is a front view of a noise reduction device according to an embodiment of the present invention.

FIG. 4 is an enlarged sectional view taken along the line AA of FIG.

5 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

1 ... Press body, 4 ... Soundproof cover, 4a ... Opening part, 8 ...
Soundproof duct, 8b ... Discharge path, 9 ... Sound absorbing member.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Michio Ejima 1200 Manda, Hiratsuka, Kanagawa

Claims (2)

[Scope of utility model registration request] 1. A noise reduction device for a transfer press, comprising a soundproof duct 8 for reducing noise emitted from the opening 4a of an opening 4a of a soundproof cover 4 provided on the work carrying-out side of the press body 1. . 2. A sound discharge duct 8 is provided with a discharge passage 8b which is inclined in a low direction in the work discharge direction, and a plurality of sound absorbing members 9 are arranged above and below the discharge passage 8b so as to be parallel to the noise propagation direction. The noise reduction device according to claim 1, wherein