JPH0655435B2 - Soundproof structure of embossing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a soundproof structure of an embossing device for embossing a plastic card, and more particularly to a soundproof structure of an embossing device for preventing diffusion of sound generated from an embossing motor. .

[Prior Art] A rotary motor has been conventionally used as an embossing motor of an embossing device. However, linear motors (solenoids) are currently being used due to demands for faster embossing, smaller motors, and lighter weight.

[Problems to be Solved by the Invention] However, the frequency of the sound from the linear motor is higher than that of the conventional rotary motor because of the particularly high speed, which is annoying. Therefore, in order to install the embossing device indoors,
It has become necessary to prevent the diffusion of this sound with a simple and light structure.

The present invention provides a soundproof structure for an embossing device that reduces the sound diffusion of the embossing motor in the embossing device with a simple structure.

[Means for Solving the Problem] In order to solve this problem, in the soundproof structure of the embossing device of the present invention, in the embossing device for embossing a plastic card, the five peripheral surfaces except the embossing side of the embossing motor are mutually separated. A soundproof structure surrounded by closely adhered predetermined wall materials, which comprises a multilayer soundproof wall having an air layer, and a heavy metal pillar and a sound absorbing material pillar adhered inside the multilayer soundproof wall at predetermined intervals.

Here, the multilayer soundproof wall is composed of three metal layers and a tar-like adhesive that bonds the metal layers at predetermined intervals.

The heavy metal columns are made of lead, and the sound absorbing material columns are made of urethane foam, and they are alternately bonded at a predetermined interval.

Further, an elastic layer and a metal layer are further provided between the bottom surface and the pedestal.

[Operation] In such a configuration, the sound from the embossing motor is absorbed and blocked by the soundproof structure, and the sound diffusion of the embossing motor in the embossing device is reduced with a simple structure.

Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the outline of the soundproof structure of this embodiment.

Reference numeral 1 is a soundproof box made of four surfaces excluding the upper surface of the soundproof wall of this embodiment, and 2 is a soundproof lid for closing the upper surface. The soundproof box 1 and the soundproof lid 2 are fixed by holes 1a and 2a. A rubber packing 7 is attached to the inner surface of the upper part of the soundproof box 1 to enhance the adhesion between the soundproof box 1 and the soundproof lid 2. Reference numeral 3 is a fan for sending motor cooling air from the outside into the box. A rubber plate 4 with a thickness of 6 mm and a zinc plate 5 with a thickness of 3 mm are mounted on the base 6 under the soundproof wall on the bottom.
It blocks the transmission of vibration to. The bottom surface of the soundproof wall, the rubber plate 4, the zinc plate 5, and the pedestal 6 have holes 1b, 4b, 5b, 6b.
It is fixed at.

2, 21 and 22 are a lead column and a urethane foam column for absorbing sound. Both columns are alternately arranged in a vertical direction at predetermined intervals on four sides, and the upper and lower sides are as shown in the figure. The soundproof wall 1 and the soundproof lid 2 are alternately adhered to each other in the left-right direction at predetermined intervals.

FIG. 2A is a schematic sectional view of the soundproof box 1 and the soundproof lid 2 in which the lead column 21 and the urethane foam column 22 are bonded, and FIG.
The figure is an enlarged sectional view of only the soundproof wall of FIG. 2A. The soundproof wall is 2.3 mm thick because if it is too thick, the layers will be broken at the corners during the molding of the soundproof box 1. The other numerical values are suitable values for sound absorption and cutoff by the cut and try, but are not limited thereto.

In FIG. 2B, 20a is three metal layers,
Reference numeral b is a tar-like adhesive that adheres the metal layers at predetermined intervals. In this way, the presence of the air layer 20c makes the soundproof wall have a so-called porous structure, so that the sound is absorbed and blocked well.

FIG. 3 is a top view when the soundproof box 1 of this embodiment is installed in the embossing device.

100a → 100b → 100c are plastic cards that move in the X direction, 34 is a card guide, and 35 is a hammer for embossing. The linear motor 30 is fixed to the bottom surface of the soundproof box 1 of FIG. 1 with four screws 30a. 31,
Reference numerals 32 and 33 are porous materials such as sponges, which suppress vibration of the motor and also help absorb sound. still,
The flow of wind by Juan 3 is indicated by arrow Y.

With the soundproof structure of this embodiment, the sound of the motor can be efficiently absorbed with a simple structure, and a decrease of 10 phon or more was observed. This is a great improvement until the installation position of the embossing device can be freely selected.

[Effects of the Invention] According to the present invention, it is possible to provide a soundproof structure for an embossing device that reduces the expansion of sound of the embossing motor in the embossing device with a simple structure.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic structure of a soundproof structure of the present embodiment, FIG. 2 is a sectional view of a soundproof box and a soundproof lid of the present embodiment, and FIG. 3 is an embossing device of the soundproof structure of the present embodiment. It is a top view which shows installation. In the figure, 1 ... Soundproof box, 2 ... Soundproof lid, 3 ... Juan, 4
…… Rubber, 5 …… Zinc, 6 …… Pedestal, 20 …… Soundproof wall,
21 ... Lead pillar, 22 ... Urethane foam pillar.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location G10K 11/16 D 9178-5H

Claims (4)

[Claims] 1. An embossing device for embossing a plastic card, comprising a soundproof structure in which five peripheral surfaces of an embossing motor except an embossing side are surrounded by predetermined wall materials that are in close contact with each other. A soundproof structure for an embossing device, comprising: a multilayer soundproof wall having the same; a heavy metal pillar and a sound absorbing material pillar adhered to the inner side of the multilayer soundproof wall at predetermined intervals. 2. The soundproof structure for an embossing device according to claim 1, wherein the multilayer soundproof wall comprises three metal layers and a tar-like adhesive that bonds the metal layers at predetermined intervals. . 3. The soundproof structure for an embossing device according to claim 1, wherein the heavy metal columns are made of lead, and the sound absorbing material columns are made of urethane foam, which are alternately bonded at a predetermined interval. 4. The soundproof structure for an embossing device according to claim 1, further comprising an elastic layer and a metal layer between the bottom surface and the pedestal.