JPS61227867A - Apparatus for coating viscous fluid - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a preamplifier according to claim 1.
□There is a viscosity (C related to fluid applicator) described in 'I'.

This type of applicator N is described in "Chemical Engineers'Handbook" by Berry.
11 and book" 1950.0.1327).

B. Conventional technology Figure 1 shows the nozzle iH of a known coating device. + is shown. A nozzle 111 with a conical tip and a circular outflow passage 3 which can be pushed and displaced in the longitudinal direction of the axis a
The average transverse direction 5 defining the fluid flow serves to form a gap in the shape of a circular ring.

What about viscous fluid? 7 is supplied to the potato 7 in the body 6 of the fabric device via a passage 8 and exits from the chamber 7 via an outflow passage 3.

A disadvantage of this type of applicator is that the inlet end of the outlet channel is notorious for wear. Since the circular ring-shaped passage cross-section has a rather good demarcation line compared to the cross-section 5, the cross-section/edge ratio of the passage cross-section is very small. This means that the fluid is
This means having a relatively high flow velocity in the edge area of the passage cross-section. As a result, significant wear occurs at the outlet channel corner edges 4. Even if a ring 9 made of a hard special material is attached to this location, the wear is significant. Due to this wear, at a predetermined position of the nozzle button 1, the passage cross section, and thus the application ω of the viscous fluid per time unit, that is, the flow m changes.

In order to eliminate this drawback, the following configuration of the nozzle button 1 is known from Beriichi, supra 11 (+1.1327, FIG. 237). That is, nozzle ε11
moves in the outflow passage 3 as a piston, and furthermore, a V-shaped nozzle groove extending in the axial direction is formed in the nozzle section 1, and the cross section of this groove is made to expand downward. . By doing this,
Axial movement of the nozzle hook allows adjustment of the nozzle opening for relatively precise ml placement. In this type, the cross-section/edge ratio of the nozzle opening is relatively large even if the opening is small.

Another drawback of the known coating device of FIG. 1 is the following.

That is, at the corner or inner edge of the chamber 7 (for example, see point b in FIG. 1), a viscous flow is formed.
The point is that, although there are some differences, the flow path is one inch, nine, < II J: (two and two).

This "11 product [, 1, iJ? Chamber 7 after using the 1i device
l) Thoroughly remove 1.1 ml of filtrate. Therefore, especially when using a two-component entrainer, the flow path passing through chamber 7 will become clogged.

4. Means for Solving Problems The object of the present invention is to provide a coating device of the type mentioned at the beginning;
'> JttThe object of the present invention is to develop a type of Jtt that eliminates the risk of clogging of the flow path.

In order to solve this problem, the present invention proposes a coating device as described in the first In preamble, which has the features described in the characterizing part of claim 1.

Eleventh features of the present invention are shown in claims 2 and below.

According to the structure of the coating apparatus according to the present invention, the blind area seen in known apparatuses is avoided, and virtually no If product occurs during bundling and use. In addition, after use, it can be completely/completely cleaned by washing the outlet channel with RFL.

This is because (1) the cleaning agent flows through all parts of the channel at a high flow rate.

Another advantage of the application device according to the invention is that the adjustment of the flow cross section is carried out by means of a rotational movement of the adjusting piston. Since the adjustment is made by the rotational movement, the drive and adjustment precision can be easily arranged, which is extremely advantageous for the purpose of adjustment. 1 However, the cross-section/edge ratio is too large everywhere in the flow path, and especially when the nozzle button stroke is small, a linear relationship between the stroke volume and the flow rate does not hold. It is made up of vines.

The nozzle groove is advantageously configured as follows. Zuf
, the width of which is narrower than at any other point of the nozzle groove for a whole groove cross section perpendicular to the longitudinal direction of the nozzle groove. k
I'll keep it that way. The cross section of the radial nozzle groove is
For example, it can be V-shaped, semi-circular, or any other suitable configuration. A particularly advantageous form of the flow cross section is a J: shape in which the wall of the nozzle groove (of curvature l) coincides with the contour of the r'l II-shaped section.

Next, the coating apparatus of the present invention will be explained with reference to the drawings.

The nozzle arrangement shown in FIGS. 2a and 21) is equipped with a cylinder 62, which is arranged in a corresponding body constructed as a cylinder block 66. The nozzle arrangement shown in FIGS. In this cylinder there is arranged an adjusting piston 61 which is rotatable about axis a 1 , and the viscous fluid is supplied from the point indicated by the arrow and flows through an inlet passage 64 through the cylinder block 66 into a ring-shaped reaches the nozzle groove 65. A groove 65 is formed circumferentially within the outer shell wall of the adjustment screw 61. The outflow passage 63 opens at the height of the nozzle opening of the cylinder 62, and extends in the circumferential direction.
It is offset with respect to the inflow passage 64 by approximately an angle δ. In the case of the illustrated example, (,1, this deviation is approximately 90 degrees. This deviation can be made smaller if possible.
I can write it bigger. In the angular 1 m range δ, the nozzle opening will have a virtually constant cross-section, but this is not strictly necessary. In the angular range ε following this angular range, the nozzle frontage is configured in such a way that the cross section changes. If this change occurs, the side wall 65a
, 65b and/or by varying the depth of the nozzle groove 65.

The nozzle groove cross-section in the radial direction, ie perpendicular to the longitudinal direction of the nozzle groove 65, can be, for example, V-shaped, semi-circular or any other suitable configuration. The \1 method of this cross section is chosen to be J: sea urchin, where the ratio of cross section/edge is as large as possible.

As a result of the rotation of the adjusting piston 61, the flow cross section is more or less deflected. FIGS. 2a and 2b show the adjusting screw 61 in an intermediate position.

Stroke/flow suspension related characteristics include selection of angle α, nozzle groove 6
The radial depth and axial width of 5 can be adjusted as desired. The flow transverse iri configuration that defines the cargo flow suspension of the viscous fluid allows approximately linear stroke/flow field characteristics to be achieved over a wide range.

Figures 2i1 and 2b show the maximum possible range of 1.
The nozzle arrangement is shown in the `` position. Small and smooth opening, 441.1! 2b f'410) Rotate adjustment L"u+-/61 in the same direction as Hh81.

In the case of the embodiments shown in Figures 2a and 2b, in principle,
The circumferential direction of the adjusting screw j~n is front and back, and also (also 1
．． / <ha) In the axial direction of the piston, there are several tens of nozzle grooves 65 arranged in 17 rows below -L to provide appropriate outflow and
The inflow passage cooperates -4. However, as long as this cooperation is performed without collision, the peripheral space J, /r or the axial space after intensifying the rotation angle necessary for adjustment is 4. In.

The embodiment of FIGS. 2a and 2b can be modified as follows. J- That is, the nozzle groove is formed not in the wall of the adjusting piston 61 but in the wall of the cylinder 62. However, the outflow passage 63 or the inflow passage 64 is
In that case (9), one of the adjusting pistons 61 and 41 must be made to pass through the ring. This can be done in the following way, i.e. also the outflow passage. J: sea urchin connected to the shape groove;
This groove also communicates with the nozzle groove via a longitudinal groove extending in the axial direction. In this case, when the adjusting piston is rotated 1↓, The size of the communication U11 between the groove or vertical passage and the nozzle groove is adjusted.

3a and 3b show a variation of the embodiment shown in FIGS. 2a and 2b, and are particularly characterized by the cylindrical structure. The same reference numbers as in Figures 2a and 2b refer to the same parts. A feature of this embodiment is that the outflow passage 63 is formed in the center of the adjusting piston 61. As a result, the dimensions of the cylinder block 66 are significantly reduced.The outflow passage 63 may, as the case may be, be freed from corner corners where even a small amount of product may accumulate. The viscous fluid enters the cylinder block 66 through the inflow passage 64 and reaches the horizontal hole 63a through the nozzle groove 65.
-ru. The horizontal hole 63a opens into the central outflow passage 63.

For pressure removal, another hole 80 can be formed in the cylinder block 66 of FIGS. 3a and 3b on opposite sides of the inlet passage 64, which hole 80 is connected to the inlet passage. 64 and Jζ in a sap type manner. The viscous fluid does not flow in this hole 80 and only exerts pressure on the adjusting piston 61. J- to this
As a result, the adjustment piston 61 is prevented from turning 11rl, and the torque required to rotate the piston 61 can be reduced.

FIG. 3a also shows the construction of the remaining parts of the coating device. A gear 76 is mounted on the adjusting piston 61 and is driven by two motors 72 via a pinion 73. 1, a motor 72 is fixed to a holding part 74 that is not involved in rotation;
The adjusting screw 61 is rotatably journaled in a retaining portion 74. Reference numeral 75 indicates the piston 61.
This is a posture measuring device. This device measures the actual value of the nozzle opening and the actual value of the fluid flow under other predetermined conditions.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the nozzle configuration of a known coating device;
Figure a is an axial cross-sectional view of the first embodiment of the nozzle configuration of the coating device according to the present invention, Figure 2b is a cross-sectional view taken along line I of Figure 2a, and Figure 3a is a cross-sectional view of the first embodiment of the nozzle configuration of the coating device according to the present invention. FIG. 3b is a partial axial sectional view of a second embodiment of the coating device according to FIG.
It is a sectional view along the line. In the figure: 1... Nozzle set of known coating device, 61... Adjustment piston, 62... Cylinder, 63... Inflow passage, 64
...Outflow passage, 65...Nozzle groove, 65a, 65
b...Side wall, 66...Cylinder block, 71...
... Gear, 72 ... Motor, 74 ... Holding part, 75
...Attitude measurement device.

Claims (1)

Claims: (1) A device for applying a viscous fluid, such as an adhesive, a sealing compound, a plastic compound, also in which the viscous fluid can be extruded through an average cross section of a nozzle device; This average cross section is the adjusting piston (6
1) and this piston (61), the piston (6
1) and formed by a piston (61) and a counterpart piece (66) with a receiving hole, and the adjusting piston (61) or the counterpart piece (66) has at least one
Two nozzle grooves (65) whose cross-sectional area changes in the longitudinal direction
is formed, and this nozzle groove (65) is connected to the corresponding piece (
66) or the adjusting piston (61), which together with the adjusting piston (61) form an average cross section for the viscous fluid, the dimensions of which can be varied by adjusting the piston (61). It is rotatably arranged in the hole of the corresponding piece (66) and the nozzle groove (65)
extends approximately at right angles to the longitudinal axis of the adjusting piston (61), and this nozzle groove (65) furthermore extends in the corresponding piece (6
6) in communication with the inlet channel (64) and the outlet channel (63) for viscous fluids arranged in or in the regulating piston (61) and these channels (64, 63) to the nozzle groove (65); ) is connected to the adjusting piston (61).
A viscous fluid applicator characterized in that the viscous fluid applicators are offset from each other in the circumferential direction. (2) A nozzle groove (65) is formed in the circumferential direction on the outer surface of the adjusting piston (61), and an outflow/inflow passage (65) is formed in the circumferential direction.
3, 64) is located at the height of the nozzle groove (65),
The counter bodies (cylinders) (62
2. The coating device according to claim 1, wherein the coating device has an opening in the hole (FIG. 2). (3) A nozzle groove (65) is formed in the circumferential direction on the outer surface of the adjustment piston (61), and the inflow passage (64)
opens into the bore of the counterpart (cylinder) (62) at the level of the nozzle groove (65) and also opens into the outlet passage (63).
) is arranged approximately in the center of the adjusting piston (61), with its upper area directly or in the auxiliary hole (63A).
3. Applicator according to claim 1, characterized in that it communicates with the end of the cross-sectional dimension of the nozzle groove (65) via the nozzle groove (65) (FIG. 3). (4) Another through hole (80) is formed in the wall of the counterpart (66) on the side opposite to the inlet passage (64), and this hole (80) connects the inlet passage (64) with the hydraulic pressure. 4. The coating device according to claim 3, wherein the coating device communicates with the above. (5) According to any one of claims 1 to 4, wherein two or more nozzle grooves are formed parallel to each other in a through passage passing through the coating device. coating equipment. (6) the width of the nozzle groove (65) increases linearly or according to another function in its ordinate (x) direction; 1
The coating device described in paragraph 1. (7) The depth of the nozzle groove increases linearly in its ordinate (x) direction or according to another function. The coating device described in paragraph 1. (8) The coating device according to claim 7, characterized in that the cross section of the nozzle groove is substantially semicircular or V-shaped at every point along its ordinate (x). (9) A gearwheel (71) is fastened to the adjusting piston (61), which gearwheel (71) is driven in two diametrically opposed positions by an electric motor, preferably a pulsed direct current motor, in each case. The coating device according to any one of claims 1 to 8, characterized in that the coating device is driven.