DE2145447A1 - Device for attaching a rear part with a meltable thermoplastic material on at least one of its two sides to a part made of textile material - Google Patents

Description

DIPL.-IJSTG. HANS W .. GROENING

DIPL.-CHEM. DR. ALFRED SCHÖN 2 1 45447

PATENT LAWYERS

September 10, 1971 / I / sp

Our file: R 27 - 1

Reliant Tooling Company Limited, Industrial Estate, Maple Cross, Rickmansworth, Hertfordshire, England

Device for attaching a rear part with a meltable thermoplastic material on at least one of its two sides on a part made of textile material

The invention relates to a device for attaching a rear part with a meltable thermoplastic Material on at least one of its two sides on a part made of textile material.

A typical material from which back parts of the type mentioned above are cut off is a textile layer, the

209812/1589

on one side with a pattern of thermoplastic dots Material is provided that is melted onto the textile layer. To a rear part from a to attach such a textile layer to a piece of fabric, for example the final surface of an item of clothing should represent, the back part is placed on the piece of fabric in exact correspondence with it, the side bearing the points of thermoplastic material on the opposite side of the piece of fabric is present. The piece of fabric and the back piece, which are placed on top of each other, are then heated to a temperature through which the thermoplastic material achieves the desired plasticity. The parts are then pressed together so that then some fibers or threads of the piece of fabric are embedded in the thermoplastic material, so that when the If parts have cooled down, they are held together firmly by the thermoplastic material.

Meanwhile, the temperature of the thermoplastic material with the thermoplastic materials used (e.g. polyethylene or polyamide), if the parts are on their common surfaces are intended to adhere firmly to one another, be kept within narrow limits when the parts are pressed together will. The parts lying one above the other must be pressed together over their entire common surface area be without 'the pressure at any point the parts become too capable of destroying or pushing the thermoplastic material through the piece of fabric to be finished.

So far, such rear parts were on their to be finished Fabric part attached by means of a press with an upper and a lower flat plate, the upper Plate was heated. The superimposed parts were placed between the panels, which were then placed under a certain

209812/1589

'2H54A7

Pressure have been compressed for a certain period of time, before separating the plates and removing the parts to cool.

Due to the difficulty of achieving a uniform temperature over the entire heated plate and the heated one Keeping the plate level with the necessary accuracy, as well as other factors, have become such Presses are not considered entirely satisfactory for attaching backing parts of the type described to theirs proven to be finished textile parts. In addition, due to their design, such presses are intermittent and not operated continuously. Another disadvantage of such presses is that, while the pressure per unit area, the must be exerted on the parts placed one on top of the other, the total force can be very small if the plates are large, that must be exercised between the plates is large, so that the presses must have a high weight to the to withstand the high stresses to which they are subjected.

The object of the invention is to provide an improved device for attaching rear parts of the described Type of textile parts.

In order to achieve this object, the invention is characterized in that that a heating device and a transport device in the sense of a transport of the superimposed textile and rear parts are arranged by the heating device, and that thereafter the superimposed parts by the gap of two cooperating pressure rollers can be passed, which are pressed against each other, so that the superimposed Parts are compressible between the rollers.

209812/1589

2H5447

The transport device preferably comprises two endless conveyor belts, a drive device for the conveyor belts and a guide for the conveyor belts, by means of which the conveyor belts in the sense of a common transport path from The input end of the transport device is brought together to an output end of the transport device and on the other hand take a different path from the output end to the input end of the transport device, the common Movement path of the conveyor belts passes through the heating device.

The heating device can come from a simple oven, or from an infrared or microwave heating device.

In the preferred embodiments of the invention, however the heating device comprises a plurality of longitudinally extending elements which extend along parallel axes transverse to the transport path and extending at a distance from one another along the transport path, with alternating elements on opposite sides Sides of the transport path are provided and arranged such that the transport belts through each of these elements are deflectable along the transport path in order to ensure effective contact of the conveyor belts with the pressure rollers.

The elements that dry out longitudinally are preferably individual heatable.

The heating elements are advantageous in several consecutive Groups arranged along the transport path, the elements of the last group down to a certain temperature according to the desired temperature of the thermoplastic material before pressing the parts together and the Rolls of the first group can be heated to a certain lower temperature.

209812/1589

-5- 2U5447

The common path of movement of the conveyor belts preferably leads through the gap of pressure rollers and can after passing through this gap via a or several chill rolls so that the parts at the exit end have such a low temperature that the bond between the parts is not destroyed by their further treatment.

According to another embodiment, the longitudinal extending elements be rotatable rollers about parallel axes. The longitudinally extending elements represent rigid units in the form of hollow bars of uniform cross-section perpendicular to the axes mentioned and be provided with deflecting surfaces over which the contacting conveyor belts move longitudinally the common trajectory can be removed. Furthermore, the deflecting surfaces can be convex to the outside or in cross-section be angled.

Finally, it is advisable to design the device according to this embodiment so that the conveyor belts at their movement along the common transport path and before the passage through the gap of the pressure rollers initially by one against one of the pressure rollers pressed counter roller can be guided around, so that the conveyor belts in an arc around and in contact with a substantial part of the circumference of the counter roller through the gap between the counter roller and a pressure roller are feasible, whereupon in an arc of opposite curvature around and in contact with an essential Part of the circumference of a pressure roller, the last-mentioned part extends from the gap between a pressure roller and the counter roller extends to the gap between the pressure rollers.

209812/1589

In the drawing are embodiments of the invention for example illustrated. Show it:

Fig. 1 is a schematic view of an embodiment of the invention in longitudinal section,

Fig. 2 is a schematic view of another embodiment of the invention in longitudinal section,

Fig. 3

and FIG. 4 views in cross section and in horizontal longitudinal section of part of the embodiment according to Fig. 2 and

Fig. 5 is a schematic cross section of the embodiment of Fig. 3 showing how the conveyor belts can be removed and replaced.

With reference to Figure 1, the apparatus shown therein comprises a frame having two horizontally and parallelly extending side parts, one of which is designated by 10, wherein the side parts by suitable transverse parts (not shown), and the frame is supported on a suitable base (also not shown).

The device is used to overlap textile parts and back parts from a table 12 at the entrance end of the Guide device to a table 14 at the exit end of the device. At the exit end of the device extend upper and lower transport rollers 16a and 16b between the side parts 10, on which they are rotatably attached, and at the exit end of the machine, upper and lower transport rollers 18a and 18b, respectively, extend between the Side parts 10 and are rotatably mounted in these. The transport rollers 16a, 16b, 18a and 18b are tangential to a common one horizontal plane.

209812/1589

2H5447

Upper and lower endless conveyor belts 20a and 20b run between rollers 18a and 18b along the device in a transport direction indicated by arrow A to rollers 16a or 16b, around the corresponding rollers 16a or 16b around back along the device in the opposite direction to the direction of transport around a Transport roller 22a and 22b around, which extend between the side parts 10 and are rotatably mounted in these are, and then via a tension roller 24a or 24b and back to the roller 18a or 18b.

Each end of the idler pulleys 24a or 24b is at one end another arm 26 rotatably supported, and each arm 26 is at a point intermediate its ends with a End of another arm 28 pivotally connected. The other ends of the two arms 28, which are connected to each roller 24a or 24b cooperating are pivotally attached to the side members so that they are coaxial with the corresponding rollers 18a or 18b can pivot. The end of each arm 26 facing away from the roller 24a or 24b is by means of a tension spring 30 connected to a point lying between the ends of the corresponding arm 2. The two with each role 24a or 24b cooperating arms 28 are interconnected in such a way that they move together about the axis of the corresponding Move roller 18a or 18b, keeping an angular distance around the axis, and they will be around their respective Arms 26 pivoted at various distances from the bearing supporting the rollers 24a. The result is the role 24a or 24b parallel to the roller 18a or 18b in only one angular position of the associated arms 28 and can with respect to the Rollers 18a or 18b can be tilted from this position by the movement of the pair of arms 28. This will be used to tension the appropriate Conveyor belt used, with a servo cylinder device between each pair of arms 2 8 and the frame effective

209812/1589

2U5AA7

is and by microswitches on each side of the corresponding Conveyor belt is controlled so that when the conveyor belt runs to one end of its rollers, it is the Microswitch on this side of the belt triggers, and the servo cylinder pivots the arms 28, so that the roller 24a or 24b is tilted so that the conveyor belt begins to run at the other end of its rollers.

Any other means of tensioning the conveyor belts can of course be used.

From the rollers 18a and 18b from j the input end of the transport device represent, the belts 20a and 20b touch one another and run along a common transport path. A plurality of parallel rollers 32a, 32b and 32c are provided at a distance from one another along the transport path, of which each extends transversely between the side parts 10 and is rotatably mounted therein. The rollers 32a, 32b and 32c are arranged alternately above and below the transport path, and the underside of the upper rollers 32a, 32b or 3 2c are slightly below the level of the tops of the lower rollers so that the belts 20a and 20b together are slightly at Run over or under each roller 32a, 32b or 32c. This ensures that each roller 32 is the appropriate Conveyor belt touches and increases the wrap angle of the roller with the corresponding conveyor belt. Three groups of seven rollers are provided, and from rollers 18a and 18b, the conveyor belts first pass one group of seven rolls 3 2a, then a group of seven rolls 32b and finally a group of seven rolls 32c.

209812/1589

2U54A7

Each of the. Rollers 32 are made of aluminum and are hollow over their entire length. Further, each of the rollers is 32 rotatably mounted in the side parts 10 by means of hollow bushings which are aligned with holes in the side parts 10, wherein six of the seven rollers in each group are heated by a longitudinally extending heating element, the through the inside of the rollers and the hollow bushings as well as through the holes in the side parts that are aligned with them is passed through. The heating element is supported insulated in the side parts, so that the roller turns around its corresponding one Heating elements rotate freely. The remaining seventh role in each group has a temperature switch, which includes a temperature sensing element, e.g. an NTC thermistor, which is arranged on a window in the wall of the roller. As the temperature sensing circuit turns with the role rotates to allow the thermistor to attach to the * - ten window remains, the role has at least one insulated sleeve and is supported by an insulated bearing in one of the side panels carried, with lines from the temperature sensing circuit to the one insulated sleeve and the other sleeve are connected and received the signal from the mentioned circuit from one isolated bearing and the other bearing will.

Each roller group 32 has its own heating elements, which are connected in parallel from a supply circuit with electricity which is controlled by the signal from the cooperating temperature sensing circuit to the rollers of the group at a certain temperature that has been manually set for the group on a control panel.

After passing through all of the heated rollers 32a, 32b and 32c, the two belts 20a and 20b pass through the gap together

209812/1589 - io -

- Io -

2U5U7

between a lower pressure roller 3Ub and an upper pressure roller 34a. Both pressure rollers 34a and 34b are off solid rods, and the lower pressure roller 34b is at its opposite ends immediately in the side parts 10 rotatably mounted. The upper pressure roller 34a is in the ends at its opposite ends supported by arms 36, the other ends of which are pivotably supported in the corresponding side parts 10. The poor 36 are fixedly connected to one another to prevent them from twisting relative to one another, and an extension 38, which is formed as a whole with one of the arms 36, extends upwardly therefrom and is at its upper one End welded to a horizontal counterweight bar 40 at a point between the ends thereof. The counterweight can be slid on either side of the extension 38 to any desired horizontal position on the rod 40 or be removed completely.

The dimensions of the arms 36, extension 38 and rod 40 are chosen to be compatible with the counterweight removed the roller 34a presses on the belts 20a and 20b and the roller 34b with a force corresponding to its own weight, while the roller 34a in the event that the counterweight 42 is on the far right end of the rod 42, as in FIG As shown in the figure, does not exert any pressure on the belts 20a and 20b and the roller 34b.

After passing through the rollers 34a and 34b, the belts 20a and 20b pass a group of cooling rollers 44, which are extend transversely to the transport path and at their opposite ends in the opposite side parts

- 11 -

209812/1589

2H5447

rotatably ^ are mounted. The rollers 44 are similar to that Rolls 32a, 32b and 32c arranged so that the belts 20a over one roll 44, under the next, over the next etc. are distracted. The rollers 44 are hollow and mounted in the side walls by means of hollow bushings, which in Hollow bearings run with a tight fit, with rollers 44 means through each roller over its hollow bearings and bushings water flowing through it can be cooled.

At the output end of the device, the belt 20b first runs over its roller 16b, while the belt 20a in the transport direction continues to run for a short distance before passing over its roller 16a. An acceptance plate 50 works with the belt 20b together as it passes over the roller 16b, wherein the take-off plate is aligned with the table 14. A similar plate 52 cooperates with belt 20a, when this runs over the roller 16a.

The rollers 16a and 16b are driven synchronously by suitable drive means, for example a chain drive and variable speed gear from an electric motor.

The operation of the apparatus will now be described below.

The drive for belts 20a and 20b is turned on to the desired speed, and the temperature control circuits for the groups of heated rollers 32a, 32b and 32c are set so that after passing the roller group 32c the thermoplastic material of a back layer carried along the transport path the correct temperature for effective binding. To that end is

209812/1589

- 12 -

2U5447

it is advantageous if the rollers 32a are set at an upper temperature which is slightly below the desired temperature Temperature, while the other roles are set to the desired temperature.

In use, the superimposed pieces of fabric and the parts to be deposited on the table 12 are arranged in such a way that that the surface of the part to be deposited carrying the thermoplastic material is the back of its corresponding one Touches the fabric part.

The superimposed parts are then guided between the rollers 18a and 18b and along the transport path between the Conveyor belts 20a and 20b moved further, because they move at the same speed, the superimposed Prevent parts from moving out of their mating position.

The deflection of the conveyor belts over the heated rollers ensures effective contact between the rollers and the belts and an effective heat transfer from the rollers to the belts and the superposed parts between them.

The rollers 32a supply the greatest amount of heat required to bring the parts to the desired temperature, so that there is very little temperature difference between the first and last of the rollers 32b and the rollers 32c have to apply very little heat to the belts and superimposed parts so that the temperature of the rollers 32c is within very narrow limits can be easily controlled. After this

- 13 -

209812/1589

2U5447

Leaving the rollers 32c therefore reliably has the thermoplastic material on the parts to be deposited the desired temperature and, before cooling occurs, the conveyor belts run with the superimposed ones Split between rollers 34a and 34b. Since each of the heated rollers only moves the conveyor belts on a small one Touches part of its circumference at once, and because any arbitrary part of each roll with the tapes only for one is in contact for a short time, a substantially equal temperature is maintained over the entire surface of each roller, wherein, if the rollers are heated independently, a temperature change in one ft> lle not in any other is transmitted.

Furthermore, if the rollers are arranged in independently controlled groups, the temperature becomes the last group The transported parts reached mostly remain unaffected by the heating power required for the roles of the first group the roles is provided.

Since the rollers 34a and 34b have a substantially linear contact, the actual weight of the roller is sufficient 34a, in order to exert enough pressure on the superimposed parts, thus ensuring a reliable bond between the thermoplastic material and the fabric part to be finished will. After passing the rollers 34a and 34b, the belts run, which are still between them, the one on top of the other Carry parts with you, above and below the cooling rollers 44, so that the parts are cooled to a temperature at which they are safe can be treated further. The pieces of fabric with their tight the back parts adhering to them are carried onto the table. Should any of the parts become sticking to it

209812/1589

- ι * - 2U5A47

tend to the belt 20a, they are removed therefrom by the plate 52 and returned to the table 14 ·.

Another embodiment of the invention is shown in FIG. in the parts that correspond to those in the embodiment of FIG parts shown correspond to are provided with the same reference numerals. In general, the in The machine shown in FIG. 2 is the same as that described with reference to FIG. Any differences will be apparent immediately recognizable from the following description.

In the embodiment of FIG. 2, the cooling rollers removed and the rollers 32a, 32b and 32c replaced by units, one of which is on a larger scale in cross-section and is shown in longitudinal section in FIGS. 3 and 4, respectively.

Each unit 132 comprises a housing 100 made of sheet metal, e.g., aluminum, which forms a beam of a uniform pentagonal cross-section is shaped along its entire length and a horizontal wall 102, from the longitudinal edges of the Wall 102 side walls diverging at equal angles and walls extending away from walls 104 which meet at the apex of an obtuse angle and form a rib, the walls 106 according to the converge on the side facing away from the wall 102.

As can be seen from Figures 2 and 3, each unit 132 is referenced with respect to a vertical line through the ' mentioned vertex symmetrical in cross section. The angle between the walls 106 is practically very small, for example 10 or 15 °, and it is shown a little larger in the drawings.

15 -

209812/1589

2H5A47

In the embodiment according to FIG. 2, the conveyor belts follow 20a and 20b a common path from rollers 18a, 18b to rollers 16a, 16b, and four lower units 132 are arranged on the underside of this common trajectory and four upper units 132 are on the Upper side of the mentioned common movement path provided, the upper and lower units 132 alternating are arranged along the transport path and all units 132 their longer dimensions in the horizontal direction and at right angles to the direction of transport A.

The units 132 are arranged at a distance from one another in rows along the transport path, their ribs formed at the contact point of the corresponding wall pairs 106 facing the transport path. The mentioned ribs of the units 132 above the transport path lie in a first horizontal common plane, while the mentioned ribs of the units 132 under the transport path lie in a second horizontal common plane which is above the first common plane. As can be seen from FIG. 2, the units 132 are in such positions that if the superposed conveyor belts 20a and 20b are viewed as a single belt as they run in the common transport path, this belt over a wall 106 of a unit 132 in contact with the wall over the mentioned rib of this unit, over and in contact with the other wall 106 of this unit, from this unit 132 to the next in the direction of transport, over and in contact with a wall 106 of this next unit, over its mentioned rib , Runs over and into contact with the other wall 106 of said next unit and thereafter to the next following unit, etc., with the conveyor belt 20a contacting the upper units 132 and the conveyor belt 20b contacting the lower units 132. It can be seen from Fig. 2 that

209812/1589

- 16 -

the transport path has a zigzag shape. If so desired, each unit can instead have two walls 106 that face one another outwardly are angled, have a wall which is convex in cross-section to the outside and through which the bands are in contact be angled with them.

The plurality of units 132 are each provided with one electrical heating element 110 (see. Figs. 3 and 4) of the type provided, which has a coil of resistive material which is surrounded by a layer of insulating material, which in turn is surrounded by a metal tube, which is arranged coaxially with the resistance coil. The member 110 is bent into a substantially U-shape and is inside of the housing 100, with one arm of the "U" along the edge between the one wall 104 and the associated Wall 106 and the other arm of the '"U" runs along the edge between the other wall 104 and the other wall 106.

The unit 132, which is furthest forward in the direction of transport, has a temperature button circuit instead of one Provided heating element. This temperature sensing circuit includes a temperature sensing element, such as a thermistor, which is attached to a Window is arranged in one of the walls 106.

The free ends of the arms of the U-shaped heating elements extend through one of the side parts 10 and are on a supply circuit connected in parallel, which is controlled by the temperature sensing circuit to which the heating elements enclosing units 132 to maintain a certain temperature by a manually adjustable setting device is set, which is on a control

- 17 209812/1589

tabular _k is provided in exactly the same way as described in connection with the embodiment of FIG. 1.

Of course, in the embodiment of FIG. 2, if so desired, the units 132 can be in two groups divided by four, with one group on top of the other and each group three units 132 with heating elements and a unit 132 with a temperature sensing circuit which includes the heating devices the corresponding group controls in a manner similar to that described with reference to FIG. 1, with the one below lying group is kept at the desired end temperature of the parts to be joined and the upper one Group is kept at a slightly lower temperature.

After passing the last unit 132 along the transport path the conveyor belts 20a and 20b move together under a roller 120 and then over a roller 122, which is mounted on an arm 124 and is biased against the roller 16a, through the gap between the rollers and 16a around roller 16a and through the gap between rollers 16a and 16b. The purpose of this arrangement on the The output side of the units 132 is to prevent a phenomenon common to the embodiment of FIG of long fabric parts with superimposed parts to be deposited with certain fabric properties may, this phenomenon being due to the compression of the piece of fabric by the rollers 16a, 16b and an inclination causes a longitudinal stretching of the fabric part. This tendency leads, if not countered becomes, to a slight displacement opposite to the direction of movement of the fabric part immediately in front of the rollers 16a, 16b. at

- 18 -

209812/1589

- is - 2U5447

This shift is unimportant for relatively short pieces of fabric, but with long pieces it has a cumulative effect this shifts a "bow-wave" in the fabric part immediately in front of the rolls 16a and 16b, which may be folded over and cause a crease if it passes between the rollers 16a and 16b, the The fold cannot be removed afterwards because the fabric adheres to the part to be deposited on both sides.

The guidance of the conveyor belts 20a and 20b around the rollers 12o, 122 and 16a, as described above, prevents the occurrence of this "bow-wave" phenomenon because of the point of contact of the tapes 20a and 20b with the Rollers 122 up to the gap between the rollers 16a and 16b, the belts are pressed against each other by forces that can be obtained from the tension in it, so that the superimposed pieces of fabric and the parts on the back, which pass through this area are actually held pressed between the conveyor belts, so that frictional forces between the fabric parts and the parts to be deposited and between these parts and the conveyor belts counteract a relative displacement of the fabric parts, the parts to be deposited and the conveyor belts and that Prevent the "arc-wave" phenomenon from occurring.

In the embodiment of FIG. 2, the runners that are firmly attached to one another Fabric parts and back parts from the rollers 16a, 16b directly on the receiving table 14, because found It has been found that in practice successive artificial cooling of the parts is generally unnecessary.

- 19 209812/1589

2U5447

In the embodiment according to FIG. 2, the rollers 16a, 16b covered with silicone rubber. Because the surfaces of the rollers 16a, 16b would be constantly deformed if one of them would be allowed to press on the other for a considerable amount of time with stationary rollers the counterweight system used to bias the rollers 16a, 16b together in FIG. 1 is not adopted in FIG. Instead, the lower roller 16b in the embodiment of FIG. 2 is up against the roller 16a by a Solenoid or pushed by a pneumatic cylinder, electrically or by any equivalent, electrical device to be operated is controlled. This is controlled by the device that drives the conveyor belts controlled in such a way that, should the conveyor belts be used either on purpose or by mistake be stopped, the roller 16b falls off the roller 16a.

Another feature of the machine of Fig. 2 is a measure relating to the easy removal and replacement of the conveyor belts 20a and 20b. For this purpose, as FIG. 4 shows, one of the side plates 10 is composed of two parts 10a and 10b, the part 10a resting on the part 10 and being removable from it, and the part 10b resting on the base frame 11 and being removable from it is on which the side panels 10 rest. The base frame 11 is provided in the usual manner on its upper side along the two sides of the machine with horizontal flanges 130, 131, respectively, which extend along the machine. One of the side plates 10c is formed in one piece and has a channel-shaped cross section with horizontal flanges on its upper and lower longitudinal edges, the lower one being horizontal

- 20 209812/1589

2H5447

Flange '134 inextricably linked to flange 130 of the base frame 11 is connected. The power supply lines for the units 132 and the lines from the temperature sensing circuit are passed through the side plate 10c and the open side of the channel portion of the side plate 10c, the the machine is turned away, is closed by a cover part 133, which is a cell for the control circuit and the instrumentation forms.

Each of the parts 10a and 10b has the shape of a cross-sectionally channel-shaped beam, the base of the channel being in vertical plane and the side walls extend horizontally and form horizontal flanges. The rollers 16a, 18a, 22a and 120 as well as the upper units 132 are each such with one end in the vertical wall of the side frame 10c attached to allow limited pivoting movement in the vertical plane, and the other ends of the rollers 16a, 18a, 22a and 120 and the upper units 132 are attached to the vertical wall of the upper side frame part 10a. Similarly, rollers 16b, 18b and 22b and lower units 132 each have one end at the vertical wall of the side frame 10c mounted in such a way that a limited pivoting movement in the vertical plane is possible is, and the other ends of the rollers 16b, 18b and 22b are in the vertical side wall of the lower side frame part 10b attached. .

If the split construction shown in Fig. 5 is adopted, that is the roller 122 on the side of the side frame 10a, 10b supporting arm 124 suitably attached to the lower side frame 10b. The attachment of the role 122 at its end associated with the side frame 10c is carried out in such a way that a limited pivoting movement of the roller

209812/1589

- 21 -

2H5A47

is possible in a "vertical plane. The rollers 2 2a and 22b are fixed in the side frames 10a, 10b, 10c in such a way that that they can be quickly removed from the machine.

The side plate parts 10a and 10b each have interruptions Base 140, which is used to hold cylindrical rods 150 of a band changing device in a fixed Fit is suitable. Said replacement device comprises a support 160 with a support foot 162 and support elements 164, which are suitable for inserting the rods 150.

In normal operation of the machine, the bars are 150 removed from their sockets 140, and the lower horizontal flange of the side frame part 10b is with the flange 131 of the base frame 11 firmly bolted, while the upper horizontal flange of the side frame part 10b with the lower horizontal The flange of the side frame part 10a is firmly bolted.

Removable cover panels (not shown) close the top of the machine as well as the exposed portions of the floor of the lower conveyor belt run.

If it is desired to change the transport belts 20a, 20b, these cover plates are removed first, then the Rollers 22a and 22b removed, whereupon the side frame parts 10a and 10b and the side frame 10b are attached to the base frame 11 holding bolts dismantled and the rods 150 in the Sok-

angle 140 of the side frame part 10a are inserted and raised, around the side frame part 10a and the rollers and units 132,

- 22 -

209812/1589

2H5A47

mounted thereon, as shown in Fig. 5, to tilt vertically.

The support elements 164 for the upper rods 150 are brought into position below the lower ends of the rods 150 and the latter are left to rest on these supporting elements. The support elements 164 are arranged in two levels, one for those engaging in the sockets IUO of part 10a Rods 150 and one for the rods 150 engaging in the sockets 140 of the part 10b. The supporting elements are arranged to be between positions outside the path of movement of the tilt rods 150 and positions within them Trajectory can be moved. The rods 150 engage in the base 140 of the supported by their support elements Part 10a, the part 10a is held in a raised position at a distance perpendicular to the part 10b. The conveyor belt 20a can therefore be pulled over the part 10a onto the rod 150, the length of which is greater than the width of the conveyor belt is sized. The rods 150 for the lower part 10b can now be inserted into the sockets 140 in the part 10b, and the latter part can be tilted upwards by lifting the rods, whereupon the latter rods by their corresponding support elements are supported, so that the part 10b in a position at a distance from both the part 10a as can also be held by the base frame 11. The conveyor belt 20b can now over the part 10b onto the lower rods 150 to be drawn. The bars 150 are then lowered again and the brace and straps are removed. The reinstallation of the conveyor belts is carried out in the opposite order of the operations described above.

The construction described with reference to Fig. 2 has the advantages that the units 13 2 large heat transfer

209812/1589

- 23 -

2H5U7

display areas opposite the conveyor belts, and since the units 132 are stationary, the number of moving parts is reduced to a minimum, and problems such as that of maintaining electrical contact between relatively moving parts avoided.

The split construction allows easy removal of the conveyor belts and the counter roller construction prevents the "arc-wave" appearance referenced was described on the embodiment of FIG. 2, but of course also in the embodiment according to Fig. 1 could occur.

The conveyor belts can be made of perforated synthetic rubber layers, fabric or wire mesh depending on the property of the materials to be joined together.

- 24 209812/1589

Claims (12)

2H5U7 patent claims 1. Device for attaching a rear part with a meltable thermoplastic material on at least one of its two sides on a part made of textile material, characterized in that a heating device and a Transport device in the sense of a transport of the superimposed textile and rear parts through the heating device are arranged, and that then the superimposed parts through the gap of two cooperating Pressure rollers (34a, 34b) can be passed, which are against each other, so that the superimposed parts between the rollers are compressible. 2. Apparatus according to claim 1, characterized in that the transport device from two endless conveyor belts (20a, 20b), from a drive device of the conveyor belts and a guide (22a, 22b) for the conveyor belts, by means of which the conveyor belts in the sense of a common transport path are brought together from the input end (12) of the transport device to an output end (14) of the transport device and on the other hand take a different path from the exit end to the entrance end of the transport device, wherein the common path of movement of the conveyor belts passes through the heating device. 3. Device according to claim 1 or 2, characterized in that that the heating device comprises an oven. 4. Apparatus according to claim 1 or 2, characterized in that the heating device consists of infrared or microwave heating devices consists. 209812 / 1B89 - 25 - 5. Apparatus according to claim 2, characterized in that the heating device consists of several longitudinally extending Elements that extend along parallel axes transverse to the transport path and at a distance from one another of the transport path, alternating elements being provided on opposite sides of the transport path and are arranged such that the conveyor belts can be deflected along the conveyor path by each of these elements are to ensure effective contact of the conveyor belts with the pressure rollers; 6. Apparatus according to claim 5, characterized in that the longitudinally extending elements can be heated individually. 7. Apparatus according to claim 6, characterized in that the heating elements in several successive groups (32a, 32b, 32c) are arranged along the transport path, the elements of the last group (32c) except for a certain Temperature corresponding to the desired temperature of the thermoplastic material before the parts are pressed together and the rollers of the first group (3 2a) can be heated to a certain lower temperature. 8. Device according to one of claims 2 to 7, characterized in that that the common path of movement of the conveyor belts (20a, 20b) through the gap of pressure rollers (16a, 16b; 34a, 3Ub). 9. Device according to one of claims 5 to 8, characterized that the longitudinally extending elements are rollers (32a, 32b, 32c) rotatable about parallel axes. - 26 209812/1589 10. Device according to one of claims 5 to 8, characterized in that the longitudinally extending elements represent rigid units (13 2) in the form of hollow bars of uniform cross-section perpendicular to the axes mentioned and are provided with deflecting surfaces (106) over which the contacting conveyor belts (20a, 20b) can be carried away during their movement along the common path of movement. 11. The device according to claim 10, characterized in that the deflecting surfaces (106) outwardly convex or in cross section are angled. 12. The device according to claim 8 or one of claims 9 to 11, characterized in that the conveyor belts (20a, 20b) during their movement along the common transport path and before the passage through the gap of the pressure rollers (16a, 16b) initially pressed by one against one of the pressure rollers (16a) Counter roller (122) are guided around, so that the conveyor belts (20a, 20b) in an arc around and in contact with a A substantial part of the circumference of the counter roller can be passed through the gap between the counter roller (122) and a pressure roller (16a) are whereupon in an arc of opposite curvature around and in contact with a substantial part of the Around the circumference of a pressure roller (16a) the last-mentioned part extends from the gap between a pressure roller (120) and the counter roller (122) to the gap between the pressure rollers (16a, 16b). 209812/1589