DE7134589U - DEVICE FOR ATTACHING A BACK PART WITH A FUSIBLE THERMOPLASTIC MATERIAL ON AT LEAST ONE OF ITS TWO SIDES TO A PART MADE OF TEXTILE MATERIAL - Google Patents

Description

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DIPL.-ING. HANS W. GROENING DIPL-CHEM. DR. ALFRED SCHÖN 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 one 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

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is provided on one side with a pattern of dots made of thermoplastic material. which is melted onto the textile layer. In order to fasten a back part made of such a textile layer on a piece of fabric which is to be, for example, the final surface of a piece of clothing, the back part is placed on the piece of fabric in exact correspondence therewith, with the side carrying the points of thermoplastic material on the opposite side of the piece of fabric. The piece of fabric and the back piece, which are placed one on top of the other, are then heated to a temperature at which the thermoplastic material achieves the desired plasticity. The parts are then pressed together, then so-.that in the thermoplastic material, some fibers or filaments of the fabric piece are stored ₅ sodaßj when the parts have cooled, they are firmly held together by the thermoplastic material.

However, the temperature of the thermoplastic material must be used in the thermoplastic materials used (e.g. polyethylene or polyamide), if the parts should adhere firmly to one another on their common surface areas., be kept within narrow limits when the parts are pressed together. The parts on top of each other must are pressed together over their entire common surface area without .The pressure at any point to the parts 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 Piece of fabric 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 plates, which then under a bsstinunten

Pressure were pressed together for a certain time before the plates were separated and the parts were removed before cooling.

Due to the difficulty of maintaining a uniform temperature to achieve over the entire heated plate and level the heated plate with the necessary accuracy As well as other factors, such presses have not been found to be completely satisfactory for the Attaching rear parts of the type described to their textile parts to be finished proved. Also be Due to their design, such presses are operated intermittently and not continuously. Another disadvantage of such Pressing is that, while the pressure per unit area that must be exerted on the superimposed parts, whole can be small, if the panels are large, the Gesair.tkraft, that are exerted between the plates is large, so that the presses have to be very heavy to handle 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.

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Preferably, the transport apparatus comprises two endless conveyor belts, a driving device of the conveyor belts, and a guide for the conveyor belts, by means of which the conveyor belts are brought together in the sense of a common transportation path from the input end of the transport device to an output end of the transport device and on the other hand, a un tersc hiedlichen path from the output end to the input end take the transport device, wherein the common path of movement of the conveyor belts passes through the heating device.

The heating device can consist of a simple oven, or 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 extend 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 can be deflected along the conveyor belt in order to ensure effective contact between the conveyor belts and the pressure rollers.

The longitudinally extending elements can preferably be heated individually.

The heating elements are advantageous in several successive ones 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.

The common movement path of the conveyor belts preferably leads through the gap of pressure rollers and can after passing through this gap via a or run several cooling rollers 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 lengthways extending elements be rotatable rollers about parallel axes. The longitudinally extending elements can 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 guided away. 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 passed through, 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.

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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 '4 views in cross section or, in horizontal longitudinal section, of part of the embodiment according to FIGS

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 Fig. 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 superimpose textile parts and rear parts from a table 12 at the entrance end of the apparatus to a table IU at the exit end of the apparatus respectively. At the exit end of the device, upper and lower transport rollers 16a and 16b, respectively, extend between the Side members 10 to which they are rotatably attached and at the exit end of the machine extend in a similar manner upper and lower transport rollers 18a and 18b between the side parts 10 and are rotatably mounted in these. The transport rollers 16a, 16b, 18a and 18b are tangential to a common horizontal plane.

a.

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 and eggs 24b back to roll 18a or 18b.

Each end of the tension pulleys 2Ua or 2Ub 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 cooperate, are pivotally attached to the side parts, so that they can pivot coaxially with the respective rollers 18a or 18b. That from roll 24a or 24b remote end of each arm 26 is by means of a tension spring 30 with one between the ends of the corresponding arm lying point connected. The two arms 28 cooperating with each roller 24a or 24b are connected to one another in such a way that that they move together about the axis of the corresponding roller 18a or 18b, but with an angular distance around the axis, and they will be around their respective arms 26 at different distances from the one supporting the rollers 24a Bearing swiveled, "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 ° 8 and the frame effective

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is and is controlled by microswitches on each side of the corresponding conveyor belt, so that when the Conveyor belt runs to one end of its rollers, it triggers the microswitch on that side of the belt, and the Servo cylinder pivots the arms 28 so that the roller 2Ua or 2Ub is tilted in such a way that the conveyor belt on the other End of his roles begins to run.

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

From the rollers 18a and 18b, which are the input end of the transport device represent, the belts 20a and 20b touch each other and run along a common transport " train. A plurality of parallel rollers 32a, 32b and 32c are provided at a distance from one another along the transport path, one 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 32c left gen slightly below the level of the tops of the lower tubes so that the bands 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 one Touches the conveyor belt 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.

Each of the rollers 32 is made of aluminum and is on its hollow throughout its length. Furthermore, each of the rollers 32 is rotatably mounted in the side parts 10 by means of hollow bushings which are aligned with holes in the side parts 10, with six of the seven rollers in each group by one

ι be heated longitudinally extending heating element that

through the interior 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 insulated and supported in the side parts, so that the roller can rotate around its * the heating elements can rotate freely. The remaining seventh role in each group has a temperature switch, which includes a temperature sensing element, e.g. a thermistor, which is attached to a window in the wall of the roller I! is ordered »Since the temperature key hold with the RoI =

Ie rotates to allow the thermistor to remain on the window mentioned, the roller has at least one insulated sleeve and is carried by an insulated bearing in one of the side parts, with leads from the temperature sensing circuit to one insulated sleeve and the other sleeve, respectively are connected and the signal from the circuit mentioned is picked up by one isolated bearing and the other bearing.

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

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

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between a lower pressure roller 3Ub and an upper pressure roller 3 "Si Bei.;! = Pressure rollers -3H-ft and 3Mb - ¹³ I.- ?! eu-5 solid bars, and the lower pressure roller 3Ub is immediately at their opposite ends rotatably mounted in the side parts 10. The upper pressure roller 3Ua is mounted at its opposite ends in the ends of arms 36, the other ends of which are pivotably supported in the respective side parts 10. The arms 36 are firmly connected to prevent them rotate relative to one another, and an extension 38 formed as a whole with one of the arms 36 extends upwardly therefrom and is welded at its upper end to a horizontal counterweight rod UO at a point intermediate the ends thereof on either side of the extension 38 to any desired horizontal position on the rod UO or be removed completely.

The dimensions of the arms 36, the extension 38 and the rod UO are chosen so that with the removed counterpart ! weight the role 3Ua on the bands 20a and'2Ob and the role

3Ub presses with a force equal to its own weight, while the roller 3Ua in the event that the counterweight U2 is on the rightmost end of the rod U2, as in FIG ν figure shown, is located, no pressure on the bands 20a and 20b and exercises role 3Ub.

After passing through the rollers 3Ua and 3Ub, the belts 20a and 20b pass a group of cooling rollers UU, which are extend transversely to the transport path and at their opposite ends in the opposite side parts 10

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; . rotatable, .beared. The rollers 44 are similar to that

Rollers 32a, 32b and 32g arranged so that the belts 20a

ι over a roll 44, under the next, over the next

! etc. are distracted. The rollers 44 are hollow and in the

j side walls mounted by means of hollow bushings, which in

! Hollow bearings run with a tight fit, the rollers 44

means through each roller via their hollow bearings and bushings

; water flowing through it can be cooled.

: At the exit end of the device, the belt 20b runs first

; over its role 16b, while the belt 20a in the transport

j 'direction continues for a short distance before it runs over

his role 16a is running. An acceptance plate 50 works with

j the belt 20b together when it passes over the roller 16b, wherein the receiving plate is aligned with the table iu

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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 device will now be described below.

The drive for belts 20a and 20b is switched 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 worn along the transport sheet the correct temperature for effective binding. To that end is

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it is advantageous if the rollers 32a are set to 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 are arranged on the table 12 so 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 3ands and an effective heat transfer from the rollers to the belts and the superposed parts between them.

The rollers 32a carry the largest of the required amount of heat to bring the parts to the required 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 within very narrow limits can be easily controlled. After this

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Leaving the rollers 32c, the thermoplastic material on the parts to be deposited therefore reliably has the desired temperature, and before cooling occurs, the conveyor belts run with the superimposed parts between the rollers 34a and 34b. As each of the heated rollers only touches the conveyor belts on a small part of its circumference at a time, and because any part of each roller has the belts for only one is in contact for a short time. a substantially equal temperature is maintained over the entire surface of each roller, and if the rollers are independently heated, a change in temperature in a role does not affect 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 an essentially linear contact, the actual weight of the roller 34a is sufficient to exert sufficient pressure on the superimposed parts to ensure a reliable bond between the thermoplastic material and the fabric part to be finished ^; will. After having passed the rollers 34a and 34b, the belts, which still carry the superimposed parts between them, run above and below the cooling rollers 44, so that the parts are cooled to a temperature at which they can safely be further treated. The fabric parts with their back parts firmly adhered to them are carried out onto the table

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* · · · I Il ϊ ** · ·· Jf

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tend to the belt 20a, they are carried by this through the plate 52 removed and returned to 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 Fig. 2 is the same as the machine shown in relation to Fi ^. 1 described. Any differences will be apparent immediately recognizable from the following description.

In the embodiment according to FIG. 2, the cooling rollers are 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 is shaped into a beam with a uniform pentagonal cross-section over its entire length and a horizontal wall 102, side walls diverging from the longitudinal edges of the wall 102 at equal angles and having walls extending away from walls 104 that are at the apex of an obtuse angle meet and form a rib, the walls 106 converging towards the side facing away from the wall 102.

As can be seen from Figures 2 and 3, each unit 132 is relative 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.

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In derkAusführungsform of FIG. 2, the conveyor belts 20a and 20b follow einem.gemeinsamen away from the rollers _t 18a, 18b to the Rolfen 16a ;, 16b, and four lower units

132 are arranged on the underside of this common movement path 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 have their longer dimensions in the horizontal direction and at right angles to the transport direction A.

The units 132 are spaced from one another in rows along the transport path, theirs being the same at the point of contact. Wall pairs 106 formed ribs are facing the transport path. The mentioned ribs of the units 132 above the transport path lie in one first horizontal common plane, while the mentioned ribs of the units 132 under the transport path in one second horizontal common plane, which is located above the first common plane. As from Fig. 2 can be seen, the units 132 are in such positions that, if the superposed conveyor belts 20a and 20b are viewed as a single belt when 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 transport direction. above and in contact with a wall 106 of this next unit, over its mentioned rib, over and in contact with the other Wall 106 of said next unit and then to the next following unit etc. runs, the conveyor belt 20a touches the upper units 132 and the conveyor belt 20b touches the lower units 132. It can thus be seen from Fig. 2 that

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the transport path has a zigzag shape. If so desired, each unit can instead have two walls 106 that face one another outwardly j are angled, have a wall that in cross section

outwardly convex and through which the ligaments are in contact be angled with them.

The plurality of units 132 are each provided with an electrical heating element 110 (see FIGS. 3 and U) of the type comprising a coil of resistive material surrounded by a layer of insulating material which in turn is surrounded by a metal tube which is coaxial is arranged to the resistance coil. The element 110 is substantially U-shaped bent and positioned within the housing 100, one arm of the "U" along the edge between a wall ¹ IOi and the associated wall 106 and the other arm of the "U" 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 including units 132 before a certain temperature to keep that by a manually adjustable adjuster is set, which is on a control

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panel is provided in exactly the same way as was described in connection with the embodiment of FIG. \

If so desired, of course, during the execution

In the form of FIG. 2, the units 132 are divided into 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 ones 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 transport belts 20a and 20b move together under a roller 120 and then over a roller 122, which is mounted on an arm 12U 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

i,

* Can occur from long pieces of fabric with superposed to be deposited parts in certain material properties, and this phenomenon results from the compression of the fabric portion by the rollers 16a, 16b and an inclination causes, a longitudinal elongation of the fabric portion ^to: cause. This tendency, if not counteracted, leads to a slight shift against the direction of movement of the fabric part immediately in front of the rollers 16a, 16b. at

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This shift is relatively short pieces of fabric unimportant, but with long pieces the cumulative effect of these shifts creates an "arch-'weiie" in the piece of fabric immediately in front of the rollers 16a and 16b, which may be folded over and cause a crease if it passes between rollers 16a and 16b, and the fold cannot then be removed because the fabric adhered 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-owl" phenomenon, because from the point of contact of the belts 20a and 20b with the rollers 122 to the gap between the rollers 16a and 16b the ligaments are pressed against one another by forces which are obtained from the tension therein, so that the superimposed fabric parts and the back parts, passing through this area, actually between the conveyor belts are held down *. 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 occurrence of the "arc-wave" phenomenon.

In the embodiment according to FIG. 2, the firmly adhering hooves Fabric parts and back parts from the rollers 16a, 16b immediately on the receiving table IU, because found it has been found that in practice successive artificial cooling of the parts is generally unnecessary.

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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 continuously deformed when it one of them would be allowed to press on the other for a substantial amount of time with stationary rollers the counterweight system used to bias rollers 16a, 16b together in FIG. 1 is not adopted in FIG. 2. 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 are stopped, the roll ISu falls off the roll 16a.

Another feature of the machine of Fig. 2 is a measure that allows easy removal and replacement of the conveyor belts 20a and 20b concerns. For this purpose, as FIG. U shows, one of the side plates 10 is made up of two parts 10a and 10b assembled, wherein the part 10a rests on the part 10b and is removable from this, and the part 10b rests on the base frame 11 and can be removed from it, u'jf which the side plates 10 rest. The base frame 11 is in the usual way on its upper side along the two sides of the machine are provided 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 long edges, with your lower horizontal

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Flange 134 inextricably linked to flange 130 of the basic bracket 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 - The open side of the channel portion of the side plate 10c facing away from the machine is covered by a cover member 133 completed, that, a cell for the tax ~ trOTTt * spe ± e == and forms the instrumentation.

Each of the parts 10a and 10b is in the form of a cross-sectionally channel-shaped beam, the base of the channel extending into 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 2 2b and lower units 132 each have one end at the vertical wall of the side frame 10c attached 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 is, the arm 124 supporting the roller 122 on the side of the side frame 10a, 10b is suitably on the attached lower side frame 10b. The attachment of the roller 122 to its end associated with the side frame 10c becomes in this way made that limited pivoting movement of the roller

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is possible in a vertical plane. The rollers 22a 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 intermittently pedestal 140, which is ^one suitable for receiving cylindrical rods 150 of a band-changing apparatus in a tight fit. 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 machine operation, 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 normally.

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 sock

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

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! ■

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

The support members 164 for the upper bars 150 are brought into position below the lower ends of the bars 150 and the latter are allowed to rest on these support members. The support elements 164 are arranged in two planes, one for the rods 150 engaging in the sockets 140 of the part 10a and one for the rods 150 engaging in the sockets IUO of the part 10b Movement path of the tilt rods 150 and positions within this movement path can be moved. If the rods 150 engage in the base 140 of the part 10a supported by their support elements, the part 10a is held in a raised position at a distance vertically above 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. The rods 150 for the lower part 10b can now be inserted into the sockets 140 in the part 10b, among other things the latter part can be tilted upwards by lifting the rods, whereupon the latter rods are supported by their corresponding support elements, so that the part 10b in a position at a distance from both the part 10a and the base frame 11 can be maintained. The conveyor belt 20b can now be pulled onto the lower rods 150 via the part 10b. The bars 150 are then lowered again and the brace and straps removed. The reinsertion 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 132 transfer large amounts of heat.

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have moving surfaces with respect to the conveyor belts, and since the units 132 are stationary, the number of moving parts reduced to a minimum, and problems such as that of maintaining an electrical one Contact between relatively moving parts is avoided.

The split construction allows easy removal the conveyor belts, and the counter roller constructior. prevents the "arc-wave" appearance referenced to the embodiment according to FIG. 2 was, of course, but 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.

Claims (12)

- 24 - a. ^ n s check eh e 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. Device r-ach claim 1, characterized in that the ^T ransportvorrichtung of two endless conveyor belts (20a, 20b) consists of a driving device of the conveyor belts, and a guide (22a, 22b) für.die conveyor belts, by means of which the conveyor belts in In the sense of a common transport path 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 output end to the input end of the transport device, the common path of movement of the conveyor belts leading through the heating device. 3. Apparatus according to claim 1 or 2, characterized in that the heating device comprises an oven. 4. Apparatus according to claim 1 or 2, characterized in that that the heating device consists of infrared or microwave heating devices. - 25 - - 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 transport 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 tenpe ^ cvtur des thermoplastic material before pressing the parts together and the rollers of the first group (32a) to a certain low Rigere temperature can be heated. 8. Device according to one of claims 2 to 7, characterized in that that the common Bawegungsbahn the conveyor belts (20a, 20b) through the gap of pressure rollers (16a, 16b; 34a, 34b). 9. Device according to one of claims 5 to 8, characterized in that that the longitudinally extending elements are rollers (32a, 32b, 32c) rotatable about parallel axes. - 26 - • · 10. Device according to one of claims 5 to 8, characterized in that the longitudinally extending elements daft represent rigid units (132) in the form of hollow beams 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 guided away during their movement along the common trajectory. 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 (2Cs, 20b) during their movement along the common transport path and before passing through the gap between the pressure rollers (16a, 16b) can initially be guided around a counter-roller (122) pressed against one of the pressure rollers (16a), so that the conveyor belts (20a, 20b) in an arc around and in contact with a substantial part of the circumference of the backing roller through the nip can be passed 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).