JPH02221582A - Device and method for mounting soft strip - Google Patents

Abstract

PURPOSE: To improve the fitting work efficiency by fitting a robot hand with a robot arm, and moving the robot hand along a flange while keeping the predetermined relation with the flange, and surrounding a strip with the flange while using the robot hand. CONSTITUTION: A robot device provided with a robot arm and a robot hand 12 for fitting a sealing strip 7 in the longitudinal direction on a fitting flange 6 is arranged. The robot hand 12 is moved by the robot arm along a fitting flange 6 while keeping the predetermined relation with the flange 6. A flexible sealing strip 7 provided with a thin grip part is rocked in the longitudinal direction by the robot hand 12, and a tip 7A of the strip 7 is fed out along a curved track. The strip 7 is pressurized onto the flange 6 by a roller so as to be surrounded for holding.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus and method for installing flexible strips. There is a sealing strip that needs to be installed.

[Means to solve the problem]

In accordance with the present invention, an apparatus is provided for use in mounting an elongated flexible channel-shaped strip onto a flange or the like. The apparatus includes a movable body and a strip held by the body and arranged to be fixed relative to the body to longitudinally feed the strip along a predetermined trajectory having a distal end outside the body. and a driving means;
By this means a strip is provided for mounting on the flange while the body is moved along and in a predetermined relationship with the flange.

The invention also provides a robotic device for mounting a flexible sealing strip longitudinally on a flange for installation around a closable opening on a motor vehicle body. The strip includes a groove-shaped gripping portion for enclosing and gripping the flange. The robot device includes a robot hand and a robot arm as described below.

This robot hand has a predetermined track for the sealing strip, and is a motorized type that moves the sealing strip along the track so that its end is outside the robot hand and the mouth of the groove of the strip faces the outside of the curve at the end of the track. and strip driving means. In addition, the robot arm supports the robot hand and moves it toward the flange so that the opening of the groove of the strip wraps around and grips the flange in the final part of the trajectory, and then the robot arm moves the robot hand along the flange. and the mounting includes motorized arm drive means for moving the robotic arm to bring the robotic hand into a predetermined relationship with the flange, thereby feeding the strip into enclosing gripping relationship with the flange.

According to the invention there is also provided a method for mounting an elongated resilient groove-shaped strip on a flange, etc. The method comprises: oriented the strip longitudinally toward the flange transversely to the length of the flange; forcing the initial end of the strip to follow a curved trajectory, such that the portion of the strip that continues adjacent to the initial end projects the mouth of the groove away from and toward the flange; moving the strip all the way towards the flange so that said adjacent portion of the strip wraps around the flange; and continuing to move the strip longitudinally while at the same time moving the strip so that the remaining portion of the strip wraps around the flange. and a step of pressing toward the flange.

〔Example〕

BRIEF DESCRIPTION OF THE DRAWINGS A device embodying the invention and a method according to the invention for installing a sealing strip over a motor vehicle door opening will be described below, by way of example only, with reference to the accompanying drawings.

FIG. 1 shows a door opening 5 of an automobile body.

This door opening is defined by a flange 6 formed at a portion where the inner and outer panels of the vehicle body are welded together. In order to provide a seal in the door opening 5, the manufacturing process of the automobile body includes the installation of a door seal (FIG. 2) on a flange 6. As shown in FIG. Be equipped. This gripping part 8 wraps around and grips the flange 6 during use, and has a soft tubular sealing part 10.
, so that the door seal surrounds the door opening with the seal on the outside of the opening. As shown in FIG. 3, when the door (the - part of which is indicated schematically by number 11) closes the opening, it partially compresses the tubular seal 10 so as to form a watertight seal. . The apparatus and method described below relates to the automatic installation of a door seal (strip) 7 onto a flange 6.

This device comprises the following two parts. It consists of a robot hand 12 as shown in Fig. 1, and a robot arm (
A robot arm (not shown) is attached to a fixture 15 to support the hand 12. Fixture 1
5 is best shown in FIG.

In the method described herein, the free end of a length of sealing strip 7, the length of which is dimensioned to fit the outer edge of the door opening, is marked at 8 in FIG. It is fed into the robot hand, and the robot hand automatically grasps it and holds out the flannel opening of the gripping part 8 toward the flange 6 as shown at B. The robot arm holds the robot hand 1 so that the grip part grasps and wraps around the flange 6 as shown by C.
2 (under the control of robot drive means, not shown) is programmed to move towards the flange.

The robot arm then moves the robot hand 12 around the outer edge of the door opening and at an appropriate distance from the flange 6. During this movement, the robot hand automatically and continuously A length of the door seal is fed out onto the flange 6 until the hand advances around the entire circumference of the door opening. Upon completion of this advancement, the distal end of the door seal is in place on the flange directly adjacent to the proximal end. As the robot arm moves the robot hand 12 around the outer edge, the robot arm adjusts the angular position of the robot hand to account for the corners and bends of the outer edge. The approach angle of the seal 7 is therefore appropriate in all positions.

As shown more clearly in FIG. 3, the gripping part 8 is made of a plastic or rubber material 16, which is extruded onto a groove-shaped metal support 18. The extruded material 16 is extruded to form gripping and sealing lips 20 on the inside facing the walls of the groove, and these lips 20 are in gripping and sealing contact with the sides of the flange 6. The metal support can take any suitable shape. For example, the metal support may include a series of U-shaped metal elements placed adjacent to each other to form a channel and either connected together by flexible connecting links or completely separated from each other. All you have to do is do it. However, the metal support may alternatively include a reciprocating, annular wire extending over the length of the groove. The gripping portion may incorporate a tape or thread 22 that is substantially inextensible.

As shown in FIG. 4, the robot hand 12 is equipped with a seal drive 24 that includes a 3&IIO roller (described below) that is driven to grip the seal sides and advance the seal longitudinally through the hand. do. These rollers are connected to the main motor 2 via a reduction gear box 28.
6. The drive shaft from the reduction gearbox 28 passes through the lid 30 in the direction of the belt drive 32 . This belt drive section 32 distributes the drive from the gearbox output shaft to three sets of rollers of the seal drive section 24 via a drive belt.

A drive shaft from the belt drive section 32 to each set of drive rollers within the seal drive section 24 is supported by a bearing within the bearing section 34 .

A tachometer 36 monitors the speed of motor 26.

In the method described herein, the seal enters the seal drive 24 at A and exits at the opposite end of the drive. A guide finger 40 is installed at the exit point. As shown in FIG. 4, in which the locus of the guide finger 40 is shown by a dotted line, the guide finger 40 holds a spigot 43, which fits relatively snugly into the tip of the groove portion of the seal 7. The size is determined. Initially, the guide finger 40 is placed adjacent the location where the seal will emerge. When the seal comes out, its groove part 8
is now fixed to the spigot 43. As the seal continues to be driven, the guide finger 40 pivots with the seal as shown in FIG. Since the grip of the seal is fixed to the spigot, the seal follows a substantially circular trajectory and contacts the rotatable guide roller 44.

Next, the robot arm moves the robot hand 12 to the flange 6.
and the guide roller 44
The gripping part 8 is pressed onto the flange as shown in FIG. The guide finger is then moved further out of fixed engagement with the seal tip. This is accomplished by a motor 46, gearbox 48 and belt 50, as shown in FIG.

The robot arm then begins to drive the robot hand 12 around the outer edge of the door opening. This tool is firmly placed on the flange by being guided and pressed onto it by rollers 44. When the robot hand 12 is driven around the entire circumference of the door opening, the distal end of the seal passes through the seal drive 24 and rests on the flange 6 adjacent to the proximal end.

Motor 46 (FIG. 4) is then energized to return guide finger 40 to its initial position ready to receive a length of seal for the next door opening.

FIG. 8 shows a view of the underside of the robot hand when the base 51 is removed and viewed in the direction of the arrow (■) in FIG. 4. This figure shows three sets of rollers 52, 54 and 56, between which the seal 7 is gripped and driven longitudinally through the robot hand 12 as the rollers rotate. The base 51 has a raised guide portion 58
The seals 7 are made with a spool 7, which guides the seal 7 successively from one set of rollers to the next when the seal is first applied.

FIG. 9 shows the motor 26, gear box 28 and lid 30.
The robot hand 12 is illustrated when it is removed.

As shown here, the main drive roller 60 is driven by the output shaft of the gearbox 28 and frictionally drives the continuous drive belt 62. Drive belt 62 passes continuously around drive rollers 64, 66, 68, 70 and 72. Additionally, drive belt 62 passes around a spring-loaded belt tensioner 74 . A suitable drive shaft passing through bearing unit 34 (FIG. 4) causes drive rollers 64 and 66 to rotate a pair of seal drive rollers 52 in seal drive 24 and drive roller 68.
and 72 each drive a set of seal drive rollers 54;
It is clear that the roller 70 can drive one of the set of seal drive rollers 56 while the other roller is free to rotate.

Advantageously, the speed of the seal drive rollers 52, 54 and 56 is such that, with respect to the angular movement of the robot arm, the seal 7 is compressed slightly in the longitudinal direction as it is placed on the flange 6. This helps offset the effects of elongation. Otherwise this elongation effect would occur and have the undesirable result of placing the door seal partially under tension. When a door seal is placed under tension, the seal will gradually tend to return to its original shape over a period of time. This results in the ends of the seal separating with an invisible gap and an incomplete weatherproof seal. This is avoided by keeping the seal slightly compressed. The nominal length of the seal is preswaged to account for this compression, so that the seal ends are seated in contact with each other.

There may be fewer than three sets of drive rollers.

The length of seal may be supported in any suitable manner, eg, mounted on a robotic hand or arm during the process.

Belt 50. and other movable parts of the robot hand are actually covered within a protective cover.

The robot hand 12 shown in FIG. 10 is similar to the robot hand shown in FIG. 4 except for the differences described below, and therefore will not be described in detail. The only difference is that the robot hand 12 of FIG. 1O has a right-angled guide finger 40A which replaces the guide finger 40 and spigot 43 of FIG. It is in having.

The purpose of the right angle finger 40A is to guide the initial end of the seal 7 into a curved trajectory when it exits the robot hand. As shown in FIG. 11, the emerging initial end 7A of the seal 7 contacts the finger 40A. When the seals are released continuously, the finger 40A moves to the arm 42.
As it rotates about the upper pivot point, the seal is forced to follow a curved trajectory defined by the trajectory of guide finger 40A.

Due to its own elasticity, the seal is attached to the guide finger 40A.
remains in contact with. This process is performed using the guide finger 4.
This continues until the OA reaches the position shown in FIG. 12, where the seal follows a substantially circular trajectory while contacting roller 44.

As shown in FIG. 13, the robot arm moves the robot hand 12 in a direction approaching the flange 6, and the guide roller 44 presses the gripping part 8 onto the flange. Guide finger 40A is then moved further away from the seal tip. As shown in Figure 14, this
This is done by a motor 46, a gearbox 48 and a belt 50.

The robot arm then drives the robot hand 12 around the outer edge of the door opening, all of which occur in FIGS.
This is done in the manner described in connection with FIG.

Motor 46 (FIG. 10) is then energized to return guide finger 40A to its initial position, ready to receive a length of seal for the next door opening.

FIG. 15 shows a modified shape of the robot hand shown in FIG. 10. The robot hand of FIG. 15 is similar to the robot hand of FIG. Plunger 90 is connected to cylinder 9 by pneumatic or hydraulic supply lines 94 and 96.
2 or can be retracted toward cylinder 92 . Cylinder assembly 92 is secured to the side of drive portion 24 by means not shown.

Upon actuation, plunger 90 initially fully engages cylinder 92.
retreating inward. The seal 7 then emerges from the robot hand 12 and is guided around the roller 44 by the guide finger 40A.

This all follows the above explanation in FIGS. 11-14.

During this process, plunger 90 plays no role as it is fully retracted and is away from seal and guide finger 40A. The robotic hand then places the seal on the flange and moves around the flange in the manner described above to place the seal on the flange.

Finally, the robot hand travels around the entire circumference of the door opening and places the terminal end 7B of the seal on the flange as shown in FIG. The omitted end portion 7B is, of course, placed adjacent to the initial end portion 7A. However, the initial end portion 7A and the seal portion directly adjacent thereto are different from each other due to the manner in which the robot hand applies the seal to the flange ( 13th
and FIG. 14), away from the flange.

Then, the robot hand 12 approaches the starting end 7A again, and at the same time the guide finger 40A is connected to the drive motor 4.
6 to the position shown in FIG. The guide finger thereby passes between the end 7A of the seal and the flange 6 and engages the outer surface of the grip 8 together with the roller 44.

Thereafter, the robot hand moves slightly away from the flange 6, as shown in FIG. 18, and pulls the seal away from the flange, and the plunger 90 is syringed. Plunger 90 is then retracted and the seal retains itself on the flange by the gripping action of the gripper. Then, the robot hand moves a short distance in a direction perpendicular to the flange 6.
Move in the direction of arrow X (FIG. 18) to completely separate guide finger 40A from the seal. During this step, the robot hand can also move slightly in a direction parallel to the flange (in the direction of arrow Y) to release the roller 44 from the grip. The guide finger 40A then connects to the motor 46.
is rotated to the position shown in FIG. lastly,
The robot hand returns to the position where the roller 44 engages the gripper 8 and then moves back and forth parallel to the flange to press the initial end 7A of the seal until it fully engages the flange, thereby causing the seal to close. Both ends abut each other.

In order to make this installation process most effective, the sealing strip is advantageously slightly compressible in the longitudinal direction and must be slightly longer than the length of the outer edge of the flange.

The robot hand shown in FIG. 19 is similar to the robot hand shown in FIG. 1O except for the addition of a guide pusher 100. The guide pusher 100 has a groove-shaped cross section (see FIG. 20, which is a partial side view of the robot hand). The width across the inside of the groove is slightly larger than the total width of the gripping part 8 and the sealing part 10 of the strip 7. A baffle 102 is provided in the middle along the groove of the guide pusher 100. The baffle has a slit 104 therein, which slit 104 is sized to fit snugly over the flange 6 for purposes described below.

In operation, the robot hand 12 of FIG.
It operates accurately using the robot hand method shown in the figure. The guide pusher is not actuated during this step; the guide pusher is effective in mounting the seal end 7B onto the flange.

FIG. 21 schematically shows the situation when the robot hand 12 has traveled the entire circumference of the door opening and has placed the terminal end 7B of the seal 7 on the flange 6.

At this time, the robot lifts the robot hand 12 (only a portion of which is shown) away from the seal. This figure shows that the terminal end 7B is of course placed directly adjacent to the initial end 7A.

However, the initial end 7A and the seal portion directly adjacent thereto are separated from the flange due to the way the ζ robot hand applies the seal to the flange (FIGS. 11-14).

The robot hand is moved laterally relative to the flange by a distance corresponding to the distance R in FIG. 20, so that the guide pusher 100 is placed directly on the initial end 7A of the seal.

The next step in this procedure is shown in FIG.

In this figure, the robot hand lowers the guide pusher 100 onto the first end 7A of the seal, and thereby the first end 7A of the seal. The end portion 7A is wrapped around the guide pusher and slightly approaches one side of the baffle.

The starting end 7A and the ending end 7B of the strip overlap slightly as shown by S. At this time, the robot hand moves the guide pusher 100 in the direction of arrow Z as shown in FIG. The baffle 102 then abuts the leading end 7A and pushes it to the right (as shown), which has the effect of "deflecting" the sealing strip adjacent to the leading end, as shown at 7C. . The starting end 7A no longer overlaps the ending end 7B at all.

As shown in FIG. 24, the robot hand moves the guide pusher downward to firmly press the starting end 7A onto the flange. The sprout end 7A and the terminal end are baffles 102.
The baffle slit 104 itself wraps around the flange.

The robot hand is then raised with respect to the flange and lifts the guide pusher 100 away from the sealing strip (the sealing strip is held on the flange 6 by the gripping action of the gripper 8) 6
The robot hand then moves again laterally relative to the flange, in the opposite direction of its previous movement. The roller 44 is thereby again placed on the sealing strip on the flange. The robot hand then descends to bring roller 44 into contact with the strip on the flange.

This roller is then moved back and forth by the robot hand and over the contact area of the ends 7A and 7B and presses the initial end 7A of the seal and the seal portion directly adjacent thereto into full engagement with the flange. , so that the ends of the seal abut each other. The parts of the robot hand 12 are omitted from FIG. 25 except for the roller 44.

Again, the sealing strip is advantageously longitudinally compressible and must be slightly longer than the length of the outer edge of the flange.

[Brief explanation of the drawing]

Figure 1 is a side view of the door opening schematically showing the device, Figure 2 is an enlarged perspective view of the sealing strip showing the end in section, and Figure 3 is the sealing strip mounted on the flange surrounding the opening. 4 is an enlarged perspective view of the robot hand forming part of the device; FIG. 5 is a side view of the robot hand in the activated state just before the strip is placed on the flange; FIG. Fig. 6 corresponds to Fig. 5 and shows the subsequent operating state, Fig. 7 corresponds to Fig. 6 and shows the subsequent operating state, and Fig. 8 is viewed from the direction of the arrow ■ in Fig. 4. 9 is a partially exploded view of the robot hand, FIG. 10 is a diagram showing a modified version of the robot hand corresponding to FIG. 4, and FIG. 11 is a diagram showing the robot hand receiving the sealing strip. 12 to 14 are side views of the robot hand in FIG. 10 corresponding to FIGS. 5 to 7, and FIG. 15 is a side view of the robot hand in correspondence to FIG. 16 is a perspective view of a portion of the sealing strip applied to the door opening; FIGS. 17 and 18 show the ends of the sealing strip of FIG. 16 applied onto the flange; FIG. A diagram showing the robot hand in Figure 15, Figure 19
10 shows another modified form of the robot hand; FIG. 20 is a perspective view of a portion of the robot hand of FIG. 19; and FIG. 21 shows a position near the end of the installation of the sealing strip. FIG. 22 is a perspective view of a portion of the robot hand of FIG. 19 in FIG.
A schematic diagram of the guide pusher of the robot hand shown in FIG. 1, and FIGS. 23 to 25 are diagrams showing a stage immediately after the stage shown in FIG. 22. 6...Flange, 7...Strip, 7
A...Starting end part, 7B... Terminating part, 8...
Gripping part, 12... robot hand, 24...
...Seal drive section, 32...Belt drive section, 40
...Guide finger, 43...Socket, 44...
- Guide rollers, 52, 54, 56...Rollers, 60...Main drive rollers, 90...Plungers, 92...Cylinder assembly, 100...Guide pusher middle-102...Baffles, 104 ···slit.

Claims (1)

[Claims] 1. A method for mounting an elongated elastic channel strip (7) on a mounting flange (6), comprising the steps of feeding the strip (7) in the direction of the flange (6). , characterized in that said strip is fed longitudinally in a direction transverse to said flange (6), and furthermore, an initial end (7A) of said strip (7)
forcing the strip to follow a curved trajectory so that a portion of the strip continuing adjacent to the initial end projects the opening of the groove towards the flange at a distance from the flange; moving said strip (7) integrally towards said flange (6) so that said adjacent continuous portion of the strip grips the flange (6); While continuing to move (7), the flange (
6) a step of pressing in the direction whereby the remaining part of the strip grips the flange (6). 2. mechanically lifting said adjacent and continuous portion of the strip; and the initial end (7A) of the strip (7);
holding the strip (7) in gripping engagement with the flange (6) and directly adjacent the terminal end of the strip (7) on the flange (6); 2. A method according to claim 1, comprising the step of: pressing the flange (6) onto the flange (6). 3. The step of integrally moving the strip (7) toward the flange (6) so that the adjacent and continuous portions of the strip (7) grip the flange (6) is a raised part of the flange (6), and the strip (7) is moved continuously in the longitudinal direction and at the same time is pressed in the direction of the flange, thereby causing the rest of the strip (7) to a step in which the part grips the flange (6), and the strip (7)
pushing the raised initial end (7A) of the strip substantially parallel to the flange (6) and away from the terminal end (7B) of the strip, whereby the initial end (7A)
partially lifting the strip from the flange (6) by deflecting the strip (7) adjacent to the flange (6); pressing the flange (6) directly adjacent the terminal end (7B) into gripping engagement with the flange (6);
6. A method according to claim 1, comprising the step of: 6) pressing all parts of the strip in the region of the ends (7A, 7B) which do not come into engagement onto the flange (6). 4. A method according to claim 3, wherein the length of the strip (7) is slightly greater than the length of the mounting flange (6) and the strip (7) is slightly compressible in the longitudinal direction. 5. A device for carrying out the method according to any one of claims 1 to 4, used for mounting an elongated elastic channel strip (7) on a mounting flange (6). , a movable body (12), and a movable body (12).
) and longitudinally along a predetermined trajectory held by the body (12) and fixed with respect to said body (12).
A strip drive (52-5) arranged to feed
6; 40), wherein the end of the track is external to the body (12), and the body (12) moves along the flange (6) and in a predetermined relationship with the flange (6). Attach the strip (7) to the flange (
6) A device adapted to be held out for installation on. 6. Supporting the main body (12) and mounting flange (6)
The main body (1) has a predetermined relationship with the flange along the
6. The apparatus according to claim 5, further comprising a robot arranged to move 2). 7. The device according to claim 5 or 6, further comprising a control device for controlling the drive device (52-56, 40) depending on the speed of movement of the body (12) along the flange (6). 8. Said control device moves the drive device (52-56; 40) along the mounting flange (6) to the body (12) so that the strip (7) is slightly compressed longitudinally on the mounting flange (6). 8. The device according to claim 7, wherein the control is performed in relation to the moving speed of the device. 9. A guide device (40) mounted on the body (12) for receiving the initial end (7A) of the strip (7) and guiding it along said distal part of the track. 9. The device according to any one of items 5 to 8. 10. The guide device (40) comprises a movable member (40) movable between a first position for receiving and mechanically engaging the initial end of the strip and a second position. , while said member (40) moves between the first and second positions, moves along said terminal part of the track and along said initial end (7A) of the strip (7). 10. The device according to claim 9, for guiding. 11, said guide device comprising a guide finger (40) pivotably mounted on the body (12) and movable between said first and second positions, thereby traversing the distal part of the track; Its guide portion (40A) extending as shown in FIG.
A) and then the strip (7
) with the guide finger (40) moving directly adjacent to the track and adapted to guide the initial end (7A) along said distal part of the track until said second position is reached. 9. The device according to 9. 12. Apparatus according to claim 10 or 11, comprising rotatable rollers (44) mounted outside the body and adjacent to said terminal part of the track for guiding the strip along said terminal part of the track. 13. a second operative member operable to move said movable member (40) beyond said second position, thereby releasing said movable member (40) from said initial end (7A) of the strip (7); Claim 10 or 11, comprising a drive device (46).
The device described. 14. moving the guide finger (40) beyond said second position, thereby causing the guide finger (40) to
13. Device according to claim 11 or 12, comprising a second drive (46) operative to release the first end (7A) of the strip (7). 15, the main body (
a movable pusher device (90) attached to a movable pusher device (90), the guide finger (40) temporarily
and is in contact with the strip (7) adjacent to the initial end of the strip so as to temporarily move the initial end of the strip away from the flange. 6) On top, the first end (7A) of the strip (7)
15. A device according to claim 11 or 14, comprising a movable pusher device controllably operable to engage and push the holder. 16. A second drive device (
46), whereby the second drive (46) moves the guide member (40) beyond the second position while the robot moves the flange (6)
Claim 6, 1, wherein the movement of the body (12) is initiated with respect to the
3 or 14. 17, a predetermined length of the strip (17) adjacent to the body (12) from there into the body (12) and into the body (12);
2), the predetermined length of which corresponds to the length of at least a predetermined portion of the mounting flange (6). The device according to item 1. 18. The strip drive device comprises a plurality of sets of rollers (52 to 52) having intermediate portions spaced apart from each other along the track.
56) and a guide device for continuously guiding the initial end (7A) of the strip between the intermediate parts.
7. The device according to any one of 7. 19. The strip drive device includes an electric motor (26);
19. The device of claim 18, comprising a seamless belt (62) distributing the driving force to at least several rollers (52-56). 20, the strip drive leaves the initial end (7A) of the strip (7) on the raised portion of the flange (6) and engages the raised initial end (7A) and attaches the flange (7A) to the initial end;
a pusher device mounted on the main body (12) for applying a force in the direction of extension of the strip (6), such that it moves away from the terminal end (7B) of the strip (7) when the strip (7) is attached to the flange (6); (100), thereby converting the initial end (7A) of the strip (7) to the terminal end (7B).
6. The device according to claim 5, further comprising a pusher device adjacent to and spaced apart from the flange (6). 21. A pusher device (100) is installed in a groove for loosely gripping the strip (7) and in this groove;
21. Device according to claim 20, comprising a baffle (102) abutting the raised initial end (7A) of the strip (7). 22, the baffle (102) is connected to the pusher device (1
The slit (10) is used to comfortably grip the flange (6) when the
22. Device according to claim 21, characterized in that it forms a flange (4) and that the groove of the pusher device presses the initial end (7A) of the strip (7) onto the flange (6).