JP2010005507A - Nozzle for diffusing electrostatic flocking pile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an nozzle for diffusing electrostatic flocking piles which can improve the diffusibility of piles, thereby uniformly flocking the piles on the surface of a work. <P>SOLUTION: The nozzle 4 for diffusing electrostatic flocking piles includes a spouting nozzle 11 for spouting piles 21, a conical nozzle body 12 installed covering the spouting nozzle 11, and a baffle plate 13 arranged in front of the spouting nozzle 11 inside 21 the nozzle body 12. A space S through which the piles 21 pass is installed between the baffle plate 13 and the nozzle body 12. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electrostatic flocking pile diffusing nozzle for applying a pile which has been conveyed by air to the surface of a flocked body.

  As this type of technology, for example, there is a technology described in Patent Document 1. The electrostatic flocking device described in Patent Document 1 has a pile spray nozzle (13) equipped with a strong wind blowing mechanism (14) for blowing strong wind. By this pile spray nozzle (13), the pile (short fiber) is blown on the work (grounded planted body) in a strong wind. For this reason, this technique is referred to as “the pile is attracted to the workpiece not only by the electric field effect but also by blowing with a strong wind, so that uniform flocking is possible regardless of the surface shape of the workpiece”.

JP-A-9-155241

  However, in the technique described in Patent Document 1, the pile ejected from the strong wind blowing mechanism (14) has a strong momentum to flow forward and hardly diffuses. If the diffusion is difficult, the pile may not be uniformly planted on the surface of the workpiece.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to improve the diffusibility of the pile, and as a result, the electrostatic can implant the pile more uniformly on the surface of the workpiece. It is to provide a flocked pile diffusion nozzle.

Means and effects for solving the problems

  As a result of intensive studies to solve the above problems, the present inventors can improve the diffusibility of the pile by providing a baffle plate that suppresses the momentum of the pile flow in the conical nozzle body. Thus, the inventors have found that the above problems can be solved, and based on this finding, the present invention has been completed.

  That is, in order to solve the above-mentioned problem, the present invention is an electrostatic flocking pile diffusion nozzle for applying a pile that has been conveyed by air to the surface of the flocked body, and an ejection nozzle that ejects the pile. A conical nozzle body provided so as to cover the ejection nozzle, and a baffle plate disposed inside the nozzle body and in front of the ejection nozzle, the baffle plate and the nozzle body There is provided an electrostatic flocking pile diffusion nozzle provided with a gap through which the pile passes.

  According to this configuration, the pile ejected from the ejection nozzle collides with the baffle plate provided inside the nozzle body together with the air, and the momentum of the flow is suppressed, and the direction of the flow changes. Thereafter, the pile passes with the air through the gap provided between the baffle plate and the nozzle body. As a result, the diffusibility of the pile is improved, and the pile flies at a uniform density toward the surface of the hair transplanted body (work). As a result, the pile can be planted more uniformly on the surface of the hair transplanted body.

  Further, in the present invention, a rod-shaped electrode disposed on a central axis of the nozzle body, and a front electrode attached to the rod-shaped electrode and disposed in front of the nozzle body, the baffle plate includes the baffle plate It is preferable to be attached to the rod-shaped electrode at the center of the plate.

  According to this configuration, the rod-shaped electrode is disposed on the central axis of the nozzle body, and the baffle plate is disposed around the rod-shaped electrode. That is, the rod-shaped electrode and the baffle plate are arranged at the center of the nozzle body. Thereby, the uniformity of the flow of the pile which comes out of a nozzle main body can be improved, and a pile can be planted more uniformly on the surface of a to-be-grafted body.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. In addition, although there exist various things as a to-be-grafted body (work), in the following description, the example which implants a belt sleeve is described. The belt sleeve is an intermediate product in the manufacturing process of a belt (transmission belt) having a ring shape, and has a cylindrical shape (a belt is cut into a plurality of rings to form a belt). . The belt sleeve is flocked (flocking process), and after several processes, a belt to which flocking has been applied is completed. By being planted, the friction coefficient of the belt is stabilized, and the generated sound is also suppressed. Various types of belts such as rib belts and toothed belts and uneven belts, and flat belts without unevenness are targeted for flocking.

(Electrostatic flocking device)
First, the electrostatic flocking device will be described. FIG. 1 is a schematic view showing an electrostatic flocking device 100 including an electrostatic flocking pile diffusion nozzle 4 (hereinafter referred to as “diffusion nozzle 4”) according to an embodiment of the present invention.
As shown in FIG. 1, the electrostatic flocking device 100 includes a hopper 1 for storing piles (short fibers), an air hose 2 through which piles flow together with air from a blower (not shown), and an application to which the air hose 2 is connected. A gun 10. The application gun 10 is connected to a power source. The application gun 10 includes an application gun body 3 and a diffusion nozzle 4 attached to the tip of the application gun body 3.

  The pile from the hopper 1 is pneumatically conveyed through the air hose 2 and supplied to the application gun 10. Then, a pile is sprayed from the diffusion nozzle 4 at the tip of the coating gun 10 toward the belt sleeve 5 which is a hair transplant body.

(Configuration of electrostatic flocking pile diffusion nozzle)
FIG. 2 is a detailed view of the diffusion nozzle 4 shown in FIG. FIG. 2A is a partial cross-sectional view of the diffusion nozzle 4, and FIG. 2B is a view taken along the line AA in FIG.
As shown in FIG. 2, the diffusion nozzle 4 includes an ejection nozzle 11 that ejects the pile 21, a conical nozzle body 12 provided so as to cover the ejection nozzle 11, and a central axis of the nozzle body 12. A bar electrode 14 disposed, a front electrode 15 attached to the tip of the bar electrode 14, and a baffle plate 13 disposed inside the nozzle body 12 and in front of the ejection nozzle 11 are provided. The diffusion nozzle 4 is attached to the coating gun body 3 with four bolts 22. In addition, as shown in FIG. 2, the belt sleeve 5 which is a to-be-planted body is being fixed to the molding die 6.

  The ejection nozzle 11 is formed in a tapered right cone. A through hole is formed at the center of the ejection nozzle 11, and a rod-shaped electrode 14 is inserted into the through hole. A pile 21 flows along with the air between the inner surface of the ejection nozzle 11 and the rod-shaped electrode 14.

  The nozzle body 12 is for preventing the pile 21 ejected from the ejection nozzle 11 from being scattered in all directions so that the pile 21 faces the belt sleeve 5, and is directed from the rear end portion toward the front end portion. Thus, the shape is a right conical shape that gradually expands in diameter and then has a portion having the same diameter. The nozzle ejection nozzle 11 is disposed at the center of the rear end portion of the nozzle body 12. Examples of the material of the main body 12 include synthetic resins such as PVC (polyvinyl chloride) and PE (polyethylene).

  One end of the rod-like electrode 14 is connected to a cable (not shown) from a power source inside the coating gun main body 3 (see FIG. 1), and the other end is attached to the front electrode 15. The front electrode 15 is disposed 10 mm forward from the tip of the nozzle body 12. Further, as shown in FIG. 2B, the front electrode 15 has a form in which an area of a pile outlet of the nozzle body 12 is stretched with an electrode. Specifically, the front electrode 15 is formed of a wire rod of about 2 mm, and is fixed by welding so that the straight wire rods are orthogonal to each other inside the wire rod processed into a circle. In the present embodiment, three parallel wire rods and one wire rod perpendicular to the wire rod are disposed inside the wire rod processed into a circle. The center of the front electrode 15 and the tip of the rod-like electrode 14 are firmly fixed.

  The baffle plate 13 includes a disc portion 13a having a hole formed in the center thereof, and a cylindrical portion 13b attached perpendicularly to the disc 13a in accordance with the hole. The hole of the disc portion 13 a and the cylindrical portion 13 b are extrapolated with respect to the rod-shaped electrode 14, and the baffle plate 13 is firmly fixed to the rod-shaped electrode 14. A gap S through which the pile 21 passes is provided between the outer peripheral surface of the baffle plate 13 and the inner peripheral surface of the nozzle body 12. The gap S is an annular gap and is formed with a uniform width around the baffle plate 13 in a cross section orthogonal to the central axis of the nozzle body 12. Further, the corner portions of the outer peripheral surface of the baffle plate 13 are chamfered so that the flow of the pile 21 is smooth. Further, a predetermined interval is provided between the baffle plate 13 and the tip of the nozzle body 12. Examples of the material of the baffle plate 13 include synthetic resins such as PVC (polyvinyl chloride) and PE (polyethylene).

(Pile flow)
The flow of the pile 21 is indicated by dotted lines and arrows in FIG. As shown in FIG. 2A, the pile 21 that has been conveyed by air through the air hose 2 first reaches the ejection nozzle 11 of the diffusion nozzle 4, and the nozzle body 12 from the tip of the ejection nozzle 11. Erupts inside. The pile 21 ejected into the nozzle body 12 collides with the baffle plate 13 provided on the inner side of the nozzle body 12 together with air, suppressing the momentum of the flow and changing the direction of the flow. Thereafter, the pile 21 passes through the gap S provided between the baffle plate 13 and the nozzle body 12 together with the air. Then, the pile 21 exits from the nozzle body 12, passes between the front electrodes 15 that generate an electric field, and reaches the surface of the belt sleeve 5.

(Example)
A pile coating comparison experiment was performed between the case where the diffusion nozzle 4 of the present embodiment was used and the case where the conventional electrostatic flocking pile diffusion nozzle having the baffle plate 13 and the front electrode disposed inside was used. It was. Here, the experimental results will be described.

  First, regarding the uniformity of the pile 21 sprayed onto the surface of the belt sleeve 5, when the diffusion nozzle 4 of the present embodiment is used, sufficient uniformity of the pile 21 was confirmed by visual evaluation. On the other hand, when the conventional electrostatic flocking pile diffusion nozzle was used, the uniformity of the pile 21 was not confirmed. Therefore, when the diffusion nozzle 4 of the present embodiment is used, the pile 21 can be uniformly applied to the surface of the belt sleeve 5 in front of the diffusion nozzle 4, but in the case of the conventional electrostatic flocking pile diffusion nozzle, The pile 21 could be applied only to a partial range of the nozzle in front of the diffusion nozzle.

  Further, in the diffusion nozzle 4 of the present embodiment, the pile 21 was not retained in the diffusion nozzle 4 after the flocking experiment, but in the case of the conventional electrostatic flocking pile diffusion nozzle, a plurality of diffusion nozzles after the flocking experiment are included. The stop of the pile 21 was recognized.

  As described above, according to the diffusion nozzle 4 of the present embodiment, it is possible to improve the diffusibility of the pile 21 that has been conveyed by air, and the pile 21 flies at a uniform density toward the surface of the belt sleeve 5. . As a result, the pile 21 can be implanted on the surface of the belt sleeve 5 more uniformly than in the prior art.

  Further, in the diffusion nozzle 4 of the present embodiment, the front electrode 15 is disposed 10 mm forward from the tip of the nozzle body 12, so that the pile 21 is prevented from staying between the front electrode 15 and the nozzle body 12. Have been able to. The front electrode 15 is not necessarily arranged in front of the nozzle body 12 and may be arranged in (inside) the nozzle body 12.

  In the present embodiment, the rod-shaped electrode 14 is disposed on the central axis of the nozzle body 12, and the baffle plate 13 is disposed around the rod-shaped electrode 14. That is, the rod-shaped electrode 14 and the baffle plate 13 are disposed at the center of the nozzle body 12. Thereby, the uniformity of the flow of the pile 21 which comes out from the nozzle main body 12 can be improved more, and the pile 21 can be more uniformly planted on the surface of the belt sleeve 5 which is a to-be-planted body.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims.

It is the schematic which shows the electrostatic flocking apparatus which comprises the electrostatic flocking pile diffusion nozzle which concerns on one Embodiment of this invention. It is detail drawing of the electrostatic flock pile diffusion nozzle shown in FIG.

Explanation of symbols

4: Electrostatic flocking pile diffusion nozzle 5: Belt sleeve (implanted hair)
11: Jet nozzle 12: Nozzle body 13: Baffle plate 14: Bar electrode 15: Front electrode 21: Pile

Claims (2)

An electrostatic flocking pile diffusion nozzle for applying a pile that has been pneumatically conveyed to the surface of a flocked body,
An ejection nozzle for ejecting the pile;
A conical nozzle body provided to cover the ejection nozzle;
A baffle plate disposed inside the nozzle body and in front of the ejection nozzle;
With
An electrostatic flocking pile diffusion nozzle, wherein a gap through which the pile passes is provided between the baffle plate and the nozzle body. A rod-shaped electrode disposed on the central axis of the nozzle body;
A front electrode attached to the rod-shaped electrode and disposed in front of the nozzle body;
With
The electrostatic flocking pile diffusion nozzle according to claim 1, wherein the baffle plate is attached to the rod-shaped electrode at a central portion of the baffle plate.

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