JP2009534633A - Apparatus and method for making test adhesive strip rolls for airflow visualization - Google Patents

Abstract

An apparatus for producing a test adhesive (27) strip, around which the test adhesive strip is wound, the apparatus comprising a thread access unit (12) having a thread roll (12) wound with a thread (11). 4), a yarn cutting unit (5) for cutting the yarn supplied from the yarn roll by the yarn access unit into a yarn piece (15) having a predetermined length, and an adhesive strip development for guiding the adhesive strip (24) Assembly unit for supplying yarn pieces to each other at a predetermined angle and a predetermined distance with respect to the surface of the unit (26) and the supplied adhesive strip, and protruding the free end of the yarn piece away from the end of the adhesive strip (91) and the cover strip by spreading on the surface of the adhesive strip and on the piece of yarn affixed thereto. Formed, and the adhesive strip, comprising a cover strip, and arranged thread pieces, a developing unit (29), winding apparatus test adhesive strip is wound and a (27), characterized in that.
[Selection] Figure 1

Description

  Citation of Related Applications This application is filed in US Provisional Patent Application No. 60 / 745,097 filed on April 19, 2006 and German Patent Application No. 10 2006 018 filed on April 19, 2006. No. 133.6 claims the benefit of the filing date, the disclosures of which are hereby incorporated by reference.

  The present invention relates to an apparatus and method for making a test adhesive strip roll. An adhesive strip is wound on the test adhesive strip roll, and a plurality of thread pieces are mounted on the surface of the test adhesive strip roll, the test adhesive strip roll protruding beyond the end of the adhesive strip.

  Test adhesive strips wrapped around this type of test adhesive strip roll may be used, in particular, to visualize the airflow over the surface of the test model.

There are various possibilities for visualizing the airflow over the model surface in the wind tunnel.
One technique is to use a thread on the surface to be inspected.
Yarn behavior provides a high-speed overview of airflow conditions in the area being examined.
By illumination with ultraviolet light, white yarns or yarns made from fluorescent synthetic materials are very well visible. Therefore, the measurement result can be recorded in detail using a video camera.
The yarns are typically adhered onto the mold surface in turn using adhesive drops or using an adhesive strip portion. Alternatively, the thread is anchored on one side of the adhesive strip prior to attaching the adhesive strip to the model.
In the high speed region, for example, a technique for individually attaching yarns is used. The reason is that the adhesive strip does not interfere with the surface of the model.
However, in the low speed region, a preset adhesive strip with yarn may be used.
An adhesive strip with a thread is cut by hand to a certain length, but is time consuming and cumbersome.

  Thus, there is a need to create the possibility of providing the thread for visualizing the airflow so that it can be used quickly and efficiently when visualizing the airflow on the surface of the model.

Achievement of the stated requirements can be inferred from the dependent claims.
Embodiments of the invention are specified in the dependent claims.

  A device according to the invention for producing a test adhesive strip has a test adhesive strip wound integrally on the device, a plurality of yarns are mounted on the surface of the device, and the device is wound with the yarns integrally. A thread access unit having a thread roll, a thread cutting unit for cutting a thread supplied from the thread roll by the thread access unit into a predetermined length of thread piece, and an adhesive strip unfolding unit for supplying an adhesive strip The thread pieces are attached to the surface of the supplied adhesive strip at a predetermined angle and at a predetermined distance, the free end of the thread piece is projected away from the end of the adhesive strip, and the assembly unit and the cover strip are Form a test adhesive strip by unfolding on the surface of the adhesive strip and on the piece of yarn affixed to it. Comprises a lip, and the cover strip, and a deployment unit comprising the arrangement yarn pieces, and a winding device for testing adhesive strip is wound.

  The distance between the yarn pieces may always be constant.

  The thread piece may be located on the surface of the adhesive strip perpendicular to its longitudinal direction and may extend beyond the end of the adhesive strip.

  According to one embodiment of the invention, the cover strip is a foam film.

  According to another embodiment, the cover strip can be easily removed from the test adhesive strip without damaging the yarn piece or separating the yarn piece from the adhesive strip.

  The method according to the invention for producing the test adhesive strip roll described above comprises the following steps.

  A step of supplying the yarn wound around the yarn roll by the yarn access unit, a step of cutting the supplied yarn into yarn pieces of a predetermined length by the yarn cutting unit, and a step of supplying the adhesive strip by the adhesive strip unfolding unit And a step of attaching the cut pieces of yarn to the surface of the adhesive strip by the assembly unit at a predetermined angle and a predetermined distance from each other, a test including the adhesive strip, the cover strip, and the arranged yarn pieces Deploying the cover strip on the surface of the adhesive strip and the piece of yarn affixed thereto to form the adhesive strip, and wrapping the test adhesive strip on a wrapping device (eg, spool). .

  According to one embodiment of the invention, the individual steps are performed automatically. As a result, the test adhesive strip is continuously produced and wound on a winding device.

  At least one of the test adhesive strips produced by the above-described method, the above-described device, deploys the test adhesive strip wrapped around the winding unit, removes the cover strip, and applies the yarn to the surface on which the airflow is to be visualized. By fixing the test adhesive strip having, it can be used to visualize the airflow over the surface.

Preferred exemplary embodiments of the invention are described below with reference to the accompanying drawings.
In the following, the same reference numerals are used to identify the same or corresponding components in different figures.
FIG. 1 shows a partial view of a first exemplary embodiment of a device according to the invention.

  The device according to the invention described below is designed to form a test adhesive strip by automatically bonding a piece of yarn to an adhesive strip and applying a cover film to it. The test adhesive strip is automatically wound on the test adhesive strip roll.

As shown in FIG. 1, the apparatus includes a stand 1. The stand plate 2 is attached on the stand 1.
The robot unit 31 is attached on the stand plate 2.
The robot unit includes a robot base stand 31a fixedly mounted on the surface of the stand plate 2, a robot turntable 31b, a robot rocker 31c, a 31d robot arm, a robot hand 31e, and a robot flange 34a.
The individual movement directions of the robot members are shown in FIG.

  As shown in FIG. 1, the yarn access unit 4 and the yarn cutting unit 5 are located adjacent to the robot unit 31 on the surface of the stand plate 2, and refer to FIGS. 2a, 2b, and 2c. Will be described in more detail.

Furthermore, the mounting plate 6 extends from the stand plate 2 (which may be made of metal, for example) and contacts the surface of the adhesive strip supplied by an adhesive strip unfolding unit (not shown).
The mounting plate 6 is joined to the frame 25, for example. The frame 25 has a roll 9. The roll 9 is protected using, for example, a plastic foam mat having a thickness of 1 cm.

  The mounting plate 6 is preferably always at the same distance from the robot base stand 31a.

The robot unit 31 includes a grip 50 that is fixedly attached to the rear region of the stand 1 and operates by the action of compressed air. The grip part 50 is attached to the robot flange 34a using a grip part flange connection unit.
As shown in FIG. 3, for example, an aluminum pliers 91 is attached to the jaw portion of the grip portion 50.

As shown in FIG. 1, since the stand 1 is supported on the wheel 60, it is movable.
Alternatively, the stand 1 may be fixed and joined to the floor.

  FIG. 2a shows the yarn access unit 4 and the yarn cutting unit 5 of FIG.

The yarn access unit 4 includes a yarn roll 12. Since the yarn roll 12 is attached to the yarn holder stand 10, it can rotate.
The yarn 11 is integrally wound around the yarn roll 12.
When the yarn 11 is deployed, the end of the yarn passes through the yarn tube 13.
A yarn end region 19 of the yarn 11 protruding from the yarn tube 13 is supplied to the yarn cutting unit 5.
The thread access unit 4 is positioned on the stand plate 2 of the stand 1 so that the grip 50 of the robot unit 31 can be easily accessed.

  FIG. 2 b shows a front view of the yarn access unit 4. FIG. 2 c shows a top view of the yarn access unit 4 and the yarn cutting unit 5.

  FIG. 3 shows a pliers 91 that can be attached to the grip portion 50. This is for holding the yarn end region 19 of the yarn 19 protruding from the yarn tube 13 as shown in FIG. 2 and supplying the yarn end region 19 to the yarn cutting unit 5 shown in FIG.

3a and 3b show views of the inside of the left pliers leg 92 and the right pliers leg 93, respectively.
According to a preferred exemplary embodiment, the pliers legs 92, 93 can grip the thread end 19 by being movable relative to each other.

As described above, the pliers 91 are joined to the robot flange 34a via the gripping part flange connection unit.
The robot can operate the pliers legs 92 and 93 independently of each other.
Furthermore, for example, tension can be applied to the pliers legs 92 and 93 in advance.

FIG. 4 shows a side view of the yarn cutting unit 5. FIG. 4 a shows a top view of the yarn cutting unit 5.
The yarn cutting unit 5 is attached to the stand 1 of FIG.

As shown in FIG. 4a, the cutter 16 pretensioned by a spring hits the anvil 14 located in the opposite direction, whereby the yarn 11 located in the free space 18 is split (cut).
Next, the cut yarn (that is, the yarn piece 15) is held by the yarn clamp.

The robot unit 31 is programmed so that the pliers 91 grip the thread protruding from the thread tube 13 and guide the thread 2 cm horizontally (for example, with respect to the free space 18 of the thread access unit 5).
When the pliers 91 hold the thread 11, a relay is activated using a robot controller (not shown). The relay first starts cutting the yarn, and then opens the tightening device of the yarn cutting device 5.
Next, the robot unit 31 determines the position of the pliers 91 still holding the thread piece 15 on the mounting plate 6. The positioning is such that when the pliers 91 are opened, the thread piece 15 falls onto the desired position of the adhesive strip (for example, the adhesive side of the adhesive strip is on the upper side of the mounting plate 6 and is continuously fed). )

  The procedure of gripping the thread 11, cutting the thread 11, attaching the thread piece 15, and pressing the thread piece 15 onto the adhesive strip is automatically and repeatedly executed by the robot unit 31. As a result, the plurality of yarn pieces 15 on the adhesive strip located on the mounting plate 6 are bonded onto the surface of the adhesive strip.

  FIG. 5 shows the overall structure of the apparatus of FIG.

FIG. 6 shows an assembly unit for affixing the thread piece to the adhesive strip, and the assembly unit has a grip 50 attached to the robot flange 34a.
Furthermore, the pliers 91 having the pliers legs 92 and 93 are attached to the grip portion 5.
As shown in FIG. 1a, the robot flange 34a is supplied with energy and control information via a current and control cable 51 to open and close the pliers legs 92, 93 and to open the grip 50 in various directions. Or rotate it.

  FIG. 7 shows a partial view of the model blade 7, and the airflow is inspected on the surface of the model blade 7.

The thread pieces 8, for example, are evenly spaced and extend over an equal length, essentially perpendicular to the longitudinal axis of the adhesive strip 24.
The free end of the thread piece 8 protrudes away from the adhesive strip 24 and is captured by the airflow. The free end of the thread piece 8 is oriented according to the airflow. As a result, the airflow can be visualized.
The yarn pieces may extend at various angles and may have different distances relative to each other.

  FIG. 8 shows a partial view of the mounting plate 6. The mounting plate 6 is fixedly joined to the work area of the robot unit 31.

  FIG. 9 shows a partial view of the stand 1. The robot unit 31 is attached on the stand 1.

FIG. 10 shows the gripping part 50 of FIG. 6 and shows the fixing area 52 for the pliers legs 92, 93.
The grip 50 is attached to the robot flange 34a as described above.

FIG. 11 shows the winding device 60 in the form of a spool 27.
A winding device is used to wind a test adhesive strip (not shown). As shown in FIG. 12, the test adhesive strip is formed by an adhesive tape strip 24, a thread piece 15 attached thereto, and a foam film 28 attached thereto.
The winding device 60 may also have a form other than a spool for storing the test adhesive strip.
The test adhesive strip is wound integrally on the spool 27.

  FIG. 12 shows a partial view of the region of the mounting plate 6 of the device of FIG.

The left half of FIG. 12 shows the adhesive tape unfolding unit 26. The adhesive tape unfolding unit 26 continuously supplies the adhesive tape strip 24 to the work area 61. The work area 61 is mounted as a support plate, for example.
The adhesive side of the adhesive tape strip 24 is directed upward. As a result, the thread piece 15 can fall from the pliers 91 of the grip portion 50 attached to the robot flange 34a. As a result, the adhesive strip 24 having the thread piece 8 shown in FIG. 7 is formed.
The adhesive tape strip 24 to which the thread piece 15 is attached is guided to the spool 27, wound together with the foam film 28, and supplied onto the spool 27, whereby a test adhesive strip is completed. The test adhesive strip consists of an adhesive tape strip 24, a thread piece 15 affixed thereto, and a foam film 28 affixed thereto.
Foam film 28 is used to prevent individual layers wound on spool 27 from sticking together and to ensure uniform winding regardless of increasing radius.
The foam film 28 can be easily removed from the adhesive tape 24 and the thread piece 15 without damaging the thread piece 15.

Since the spool 27 and the adhesive strip unfolding unit 26 can be driven separately, for example, via a motor, the adhesive strip 24 is unfolded from the adhesive strip unfolding unit 26, or the adhesive strip 24 and the yarn piece 15 attached to the adhesive strip 24 are Is wound around the spool 27.
According to another exemplary embodiment, a drive for the adhesive tape unfolding unit 26 is not necessary.

  FIG. 13 shows a partial view of a device according to the invention. In this figure, the spool 27 can be recognized more clearly.

  FIG. 14 shows a partial view of a device according to the invention. This figure shows the foam film development unit 29.

  The following summarizes the method of making the above test adhesive strip.

The robot unit 31 uses the pliers 91 of the holding unit 50 to hold the tube of the yarn roll 12 protruding from the yarn tube 13, and then the yarn 11 horizontally (for example, over the slot 18 of the yarn cutting unit 5). Programmed to pull (over a length of 2 cm).
While the pliers 91 still hold the thread 11, the relay is switched via the controller of the robot unit 31. The relay first starts to cut the yarn 11 into the yarn piece 15 and then opens the tightening device of the yarn cutting unit 5.
In the next work step, the robot unit positions the pliers 91 still holding the thread piece 15 on the support plate 61. In this positioning, when the pliers are opened and at an angle with respect to the support plate 61 (one end of the thread 15 is in contact with the adhesive tape strip 24), the thread piece 15 is discharged onto a desired position, and then the thread piece. This is performed so as to press 15 to a predetermined position.

The adhesive tape strip 24 drawn out from the adhesive strip developing unit 26 and the foam film 28 drawn out simultaneously from the developing device 29 are fixed on the spool 27. The fixing is performed such that when the spool 27 is rotated and wound onto the spool 27, the adhesive tape strip 24 and the foam film 28 are unfolded from their respective sources.
At the same time, the adhesive tape strip 24 is drawn over the working area of the small support plate 61.
By wrapping, this mechanism pulls the adhesive tape strip 24 over the work area. As a result, the next thread piece 15 is fixed by the pliers 91 at a precisely maintained distance.

The requirement to keep the distance between the yarn pieces 15 to be bonded constant is realized by an algorithm. Using this algorithm, a process set on a stepping motor (not shown) can be calculated.
In deriving this algorithm, for example, it is considered that the radius of the composite of the test adhesive strip (adhesive tape strip 24 / thread piece 8 / foam film 28) wound around the spool 27 increases with each rotation. .

As a result of the above-described procedure, a spool 27 around which the composite of adhesive tape strip 24 / thread piece 8 / foam film 28 is wound is completed.
In order to visualize the wind tunnel test airflow, for example, a test adhesive strip with the required thread pieces 15 is unfolded from the foam film 28 of the spool 27, which is completed and wrapped in the required length, and the model's Fixed on the surface.

  Although the invention has been described above with reference to preferred exemplary embodiments, it will be apparent that changes and modifications can be effected without departing from the scope of protection of the invention.

For example, the thread pieces can be attached to the adhesive tape 24 using various intervals.
Furthermore, as an alternative to foam film, another suitable cover material may be used, which can be easily separated from the adhesive surface of the adhesive tape without damaging the piece of yarn attached to it. it can.
Furthermore, different types of yarns (yarn brand, yarn thickness, yarn color) may be used.

1 is a schematic partial view from the side of a test adhesive strip manufacturing apparatus according to a preferred exemplary embodiment; FIG. It is the schematic which shows the motor function of the robot unit shown in FIG. It is a side view which shows the thread | yarn access unit and thread | yarn cutting unit of FIG. It is a front view which shows the thread | yarn access unit and thread | yarn cutting unit of FIG. It is a top view which shows the thread | yarn access unit and thread | yarn cutting unit of FIG. It is a side view which shows the pliers for hold | gripping and hold | maintaining a thread | yarn. It is a figure which shows the inner side of a left pliers leg part. It is a figure which shows the inner side of a right pliers leg part. It is a side view which shows the thread | yarn cutting unit of FIG. It is a top view which shows the thread | yarn cutting unit of FIG. It is a figure which shows the schematic structure which looked at the apparatus of FIG. 1 from the front. It is a figure which shows the assembly unit which has the pliers shown in FIG. FIG. 5 is a partial view showing a model having an adhesive strip with a thread. It is a fragmentary figure which shows the attachment plate of the working area | region of the apparatus of FIG. FIG. 2 is a partial view of the base frame of the apparatus of FIG. 1 as viewed from the front. It is a figure which shows the holding part of the assembly unit shown in FIG. It is a figure which shows the winding apparatus of a test adhesive strip. FIG. 2 is a partial view showing a work area of the apparatus of FIG. 1. It is a more detailed figure which shows the winding unit shown in FIG. FIG. 6 is a partial view of an apparatus according to a preferred exemplary embodiment, showing a cover strip deployment unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stand 2 Stand plate 4 Thread access unit 5 Thread cutting unit 6 Mounting plate 7 Model blade 9 Roll 10 Thread holder stand 11 Thread 12 Thread roll 13 Thread tube 15 Thread piece 19 Thread end area 31 Robot unit 31a Robot base stand 31b Robot rotation Panel 31c Robot rocker 31d Robot arm 31e Robot hand 34a Robot flange 91 Pliers 92, 93 Plier legs (left, right)
94 Groove 27 Spool 28 Foam film 50 Holding part 51 Cable 60 Winding device

Claims (8)

An apparatus for making a test adhesive strip roll (27) around which a test adhesive strip is wound, comprising:
A thread access unit (4) having a thread roll (12) around which the thread (11) is wound;
A yarn cutting unit (5) for cutting the yarn (11) supplied from the yarn roll (12) by the yarn access unit (4) into a yarn piece (15) having a predetermined length;
An adhesive strip unfolding unit (26) for supplying an adhesive strip (24);
The yarn pieces (15) are supplied at a predetermined angle and a predetermined distance to the surface of the supplied adhesive strip (24), and the free ends of the yarn pieces (15) are connected to the adhesive strip (24). An assembly unit (91) projecting away from the end of the
Forming a test adhesive strip by spreading a cover strip (28) on the surface of the adhesive strip (24) and on the thread strip (15) affixed thereto, and the adhesive strip (24); A deployment unit (29) comprising said cover strip (28) and a disposed thread piece (15);
And a winding device (27) around which the test adhesive strip is wound.   2. A device according to claim 1, characterized in that the distance between the thread pieces (15) is constant.   2. The thread strip (15) according to claim 1 or 2, characterized in that it extends perpendicularly to the longitudinal direction on the surface of the adhesive strip (24) and projects over the end of the adhesive strip (24). Item 3. The apparatus according to Item 2.   4. A device according to any one of the preceding claims, characterized in that the cover strip (28) is a foam film.   The cover strip (28) is easily removed from the adhesive strip (24) without damaging the thread piece (15). apparatus. A method for making a test adhesive strip roll (27) comprising:
Supplying the yarn (11) wound around the yarn roll (12) by the yarn access unit (4);
Cutting the supplied yarn (11) into yarn pieces (15) of a predetermined length by a yarn cutting unit (5);
Supplying an adhesive strip (24) by means of an adhesive strip unfolding unit (26);
The cut thread piece (15) is attached to the surface of the adhesive strip (24) by the assembly unit (91) at a predetermined angle and a predetermined distance, and the free thread piece (15) is free. Projecting an end away from the end of the adhesive strip (24);
Thread strips on and adhered to the surface of the adhesive strip to form a test adhesive strip comprising the adhesive strip (24), a cover strip (28), and the disposed strip (15). (15) spreading the cover strip (28) on;
Wrapping the test adhesive strip onto a winding unit to form the test adhesive strip roll (27).   The method according to claim 6, wherein each of the steps is performed automatically. Use of a test adhesive strip roll (27) produced by the method according to claim 6 or claim 7 for visualizing the air flow on the surface of a model using the thread piece (15). ,
A method of use, wherein the test adhesive strip is unfolded, the cover strip (28) is removed, and an adhesive tape (24) is laminated onto the surface with the thread strip (15) affixed thereto.

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