Apparatus and method for drawing a fabric web from a loom

Abstract

A device and a method for drawing a fabric web (1) from a weaving machine (2) are described, the fabric web (1) being clamped at least temporarily in a movement region (17) at a production speed in its drawing direction (5) using at least one reciprocally drivable and on a frame guided clamp carrier (3). In the production direction, after a carrying frame device (8), an additional clamping device (10) is arranged on the side of the clamp carrier (3) facing away from the weaving machine, i.e. on the side facing away from the weaving machine. This additional clamping device (10) clamps the fabric web (1) before the clamp carrier (3) has released its clamping of the fabric web (1) and subsequently moves in a direction towards the weaving machine (2) against the drawing direction (5).

Description

Technical Field

[0001] The present invention relates to an apparatus and method for drawing a fabric width from a loom, as described in the preamble of claim 1 or claim 14. Background Technology

[0002] Apparatus and methods for drawing fabric webs or web-shaped products from a loom are known. These apparatuses and methods are always used when fabric webs are produced continuously or preferably in sections. In the case of continuous production, the produced web-shaped fabric webs are typically wound by the loom so that they can be supplied to further processing. In the case of section production of web-shaped fabric webs, the woven sections produced by the loom are cut to a fixed length, and the cut pieces are typically stacked on top of each other. The latter is mainly used for woven products in which the web-shaped fabric webs have at least a certain three-dimensional structure. When winding such three-dimensional fabric webs, these fabric webs are usually damaged in their structural construction because, during winding, the structure of the fabric web is compressed on the inside and stretched on the outside.

[0003] An apparatus for producing and drawing web-shaped products is known from DE 10 2015 222 142 B3. Two clamping carriers with grippers are used to draw the web-shaped product from a loom, wherein driving mechanisms are also provided, by which the clamping carriers are reciprocated in the drawing direction and against the drawing direction of the web-shaped product. The drawing of the web-shaped product is achieved by combining this reciprocating motion of the clamping carriers with the controlled opening and closing of the grippers, wherein tension is applied to the web-shaped product by manipulating the driving mechanisms for the clamping carriers with grippers. According to this known apparatus, a web-shaped product having a main section and an auxiliary section is manufactured. The auxiliary sections are used for gripping the web-shaped product at these sections, i.e., the opening and closing of the grippers occurs only during the time period of manufacturing the web-shaped product, during which the auxiliary sections for holding the web-shaped product are created or have been created.

[0004] A device for drawing web-shaped products from a loom is known from DE 10 2017 213 255 B3. This device is used for web-shaped products of a substantially three-dimensional structure produced in sections, which are drawn from the loom using a known device. Therefore, a drawing device with at least one clamping carrier is provided, which clamps the web-shaped product by means of a clamp. The device further includes a support frame device and a drive mechanism on which the clamping carrier is guided and reciprocated in a motion region by means of the drive mechanism. In the area between the device and the clamping carrier on the loom-facing side, a support system is provided inside the support frame device for the web-shaped product, such that sagging of the web-shaped product in this area is prevented or limited by the support system. A tension rope and / or a rigid chain with a stiff back is preferably used as the support system. Additionally, a second clamping carrier is preferably provided and manipulated between the device and the first clamping carrier on the loom-facing side, such that the web-shaped product is at least temporarily, preferably, also clamped and held by the first and second clamping carriers. This means that the fabric web is clamped and held at its leading end, and at least temporarily at its trailing end on the loom-facing side as well. When a fabric web of a length substantially corresponding to the length of a known device is woven, it needs to be manually gripped at its leading end to maintain tension, while the clamping carrier facing that end travels back along the loom direction and (e.g., from the first clamping carrier) assumes the clamping of the fabric web. Furthermore, if only one clamping carrier exists, the weaving process must be stopped until that clamping carrier travels back and resumes clamping the fabric web. A disadvantage of the known device is that the fabric web must be manually pulled at its leading edge to maintain tension, requiring a considerable amount of force from the person performing this holding and pulling. Summary of the Invention

[0005] The objective of this invention is now to provide an apparatus and method for drawing a fabric width from a loom, suitable for thick products, especially so-called three-dimensional products (e.g., for multi-layered fabrics), by which manual holding and drawing are no longer required, and the quality of the woven fabric width is no longer degraded even in the presence of only one clamping carrier by maintaining uniform tension.

[0006] This task is accomplished by means of a device having the features of claim 1 for drawing a fabric width from a loom and by means of a method having the features of claim 14 for drawing a fabric width from a loom. Suitable improvements are defined in their respective dependent claims.

[0007] According to a first aspect, the device for drawing a fabric web from a loom according to the invention has at least one reciprocating and guided clamping carrier on a frame, which clamps and holds the fabric web at least temporarily in the traction direction of the fabric web in the movement zone at a production speed. According to the invention, an additional clamping device is now arranged on the loom-facing side of the clamping carrier, on the loom-facing side of the supporting frame device, which clamps the fabric web before the clamping carrier has released its clamping of the fabric web and subsequently moves in the direction toward the loom against the traction direction of the fabric web. By clamping the fabric web by the additional clamping device, tension in the fabric web is maintained, more precisely and primarily when the clamping carrier has released its clamping. The release of the clamping carrier is necessary so that it can re-traverse in the direction toward the loom so that the fabric web can be re-clamped there. More preferably, in addition to the clamping carrier (i.e., the first clamping carrier), another clamping carrier (i.e., the second clamping carrier) is provided between the loom and the support frame device. These clamping carriers alternately or temporarily clamp the fabric width in parallel.

[0008] Preferably, the additional clamping device is mounted on the cantilever beam arranged at the supporting frame assembly, and preferably, the additional clamping device is capable of horizontal movement and / or vertical movement with the cantilever beam. This mobility allows the weaving length of the fabric width to be cut to a predetermined length to be set and positioned for clamping. More preferably, the additional clamping device is capable of movement on and / or with the cantilever beam by means of a drive or manually. This means that in the first embodiment, manual horizontal and vertical mobility is provided, while in the second embodiment, the movement and setting of the position of the additional clamping device is performed by means of an electric, pneumatic, or hydraulic drive.

[0009] Preferably, in addition to the auxiliary clamping device, a cutting device is preferably provided at the cantilever beam, by means of which the fabric width can be cut or cut to a fixed length. More preferably, the cutting device is arranged next to the auxiliary clamping device, wherein the auxiliary clamping device and the cutting device can move and be positioned independently of each other and relative to each other. This is necessary in order to move the cutting device to the corresponding part of the fabric width so that the manufactured fabric width section can be cut there. Here, the auxiliary clamping device can release or clamp the fabric width as needed. Handwheels are preferably provided for manual adjustment and positioning of the auxiliary clamping device and the cutting device, and for clamping via the auxiliary clamping device.

[0010] The auxiliary clamping device and the cutting device each have their own manual, electric, hydraulic, or pneumatic drive mechanisms on their right and left sides (i.e., in the region on the longitudinal side of the fabric width). According to another embodiment, electric, hydraulic, pneumatic, or manual drive mechanisms are respectively provided in the central region of the auxiliary clamping device. The auxiliary clamping device and the cutting device are arranged on the guide portion at the cantilever beam and are preferably configured to be flexible and torsional. The flexible and torsional construction of these two devices has the advantage of compensating for some deviations in length and height of the guide portion at the cantilever beam and the difference in drive mechanisms between the right and left sides.

[0011] Upon completion of clamping, a desired holding tension is applied to the fabric web, which is less than the traction tension applied by the clamping carrier. This holding tension is maintained by means of a locking device or self-locking mechanism, thereby preventing the auxiliary clamping device from accidentally disengaging from the clamping position. Preferably, the auxiliary clamping device has a single through-type or multiple clamping elements, which are adjustable in clamping force; more precisely, each clamping element of the auxiliary clamping device can be individually manipulated with adjustable clamping force. This allows for reliable clamping across the clamping width of the fabric web via the auxiliary clamping device.

[0012] To avoid collision between the additional clamping device and the fabric web to be clamped, it is preferable that the additional clamping device be positioned above the fabric web to be clamped. This is particularly advantageous when the fabric web is cut to a fixed length using a cutting device, and also during inspection or maintenance.

[0013] Preferably, the fabric width has a main section with a three-dimensional structure and auxiliary sections with at least a two-dimensional structure located between the main sections, so that clamping can be performed particularly well and reliably in the auxiliary sections.

[0014] Preferably, in addition to the at least one clamping carrier, another clamping carrier is provided between the loom and the support frame device. This additional clamping carrier also clamps the fabric web at least temporarily, preferably at auxiliary sections arranged between the main sections. A rollable and deployable support system is preferably provided within the movement area of ​​the clamping carrier and the other clamping carrier. This support system forms a support pad for the fabric web (i.e., the woven fabric section) between the loom and the support frame device. The support pad ensures that the fabric web does not sag or sags very little. Additionally, a platform connected to the other clamping carrier and reciprocating below the fabric web is provided. This platform supports the fabric web as it moves along the traction direction.

[0015] According to a second aspect of the invention, a method for drawing a fabric web from a loom is described, in which at least one clamping carrier clamps, at least temporarily, the fabric web between the loom and a support frame device while maintaining its traction tension, and thereby moves at a production speed in the movement area of ​​the clamping carrier along the direction of the support frame device. An additional clamping device is provided on the side of the support frame device opposite to the loom, which maintains a holding tension while clamping the fabric web, more specifically, before the clamping carrier has released its clamping of the fabric web and moves again in the direction toward the loom in the opposite traction direction. The traction tension of the at least one clamping carrier is now set to be greater than the holding tension at which the additional clamping device clamps the fabric web in the traction direction behind the support frame device with this holding tension when the clamping carrier releases the fabric web from its previously existing clamping in its movement area between the loom and the support frame device. Preferably, the additional clamping device is mounted at the cantilever beam, which is fixed to the support frame assembly, and the additional clamping device travels horizontally and / or vertically with the cantilever beam. This ensures that the additional clamping device can clamp the fabric web tightly before the clamping carrier, which moves within its motion area between the loom support frame assemblies, has released its clamping grip on the fabric web. Furthermore, the vertical movement of the cantilever beam enables access to the traction device during inspection or maintenance.

[0016] Further preferably, a second clamping carrier is provided in the movement area of ​​the clamping carrier (i.e., the first clamping carrier), which alternately or, if necessary, temporarily clamps the fabric web simultaneously with the first clamping carrier. In any case, the additional clamping device clamps the fabric web from the point when the clamping carrier has not yet released the fabric web, wherein the clamping by the additional clamping device is always achieved at the point when the clamping carrier has released the clamp on the fabric web in the movement area. Preferably, the fabric web is cut by means of a cutting device, which is also arranged on the cantilever beam in addition to the additional clamping device. Further preferably, the cutting device is also arranged on the cantilever beam next to the additional clamping device. Preferably, these two devices, namely the additional clamping device and the cutting device, can be operated independently of each other by independent drive mechanisms.

[0017] For example, it is feasible to add clamping and / or cutting equipment (preferably facing upwards) for inspection or maintenance purposes.

[0018] The advantage of an additional clamping device can be achieved if the fabric section is so long that the area to be cut by the cutting device is not yet reachable by the cutting device.

[0019] After the fabric width is cut using a cutting device, an additional clamping device swings upward, allowing the cut fabric width segments to be stacked on top of each other and removed from the area of ​​the device used to pull the fabric width from the loom.

[0020] However, the cantilever beam can also continue to travel, or the fabric can be removed to one side. Attached Figure Description

[0021] Further advantages, application possibilities, and details of the invention will now be explained in detail with reference to embodiments. In the accompanying drawings: Figure 1 The schematic structure of a device for horizontally pulling a fabric web from a loom is shown. The device has two clamping carriers that can travel above the available movement area of ​​the horizontal pulling device, and according to the invention, it has additional clamping and cutting devices. Figure 2 The basic structure of the additional clamping device is shown; Figure 3 The additional clamping device is shown in an upward-flipped position; Figure 4 A schematic diagram showing the individual adjustability of each clamping element for the additional clamping device; Figure 5 A side view of an additional clamping device with an upwardly swinging clamping element is shown; Figure 6 The schematic diagram shows a cutting device, which is attached to the clamping device, for cutting fabric sections to a fixed length. Figure 7 illustrates the various stages or method steps of the interaction between a horizontal traction device for a fabric web using two clamping carriers, an additional clamping device according to the invention for maintaining tension in the fabric web during traction before the clamping carriers release the fabric web in the movement zone, and a cutting device, wherein the following steps are shown: Figure 7.1 The process of transferring the fabric width to the horizontal traction device is shown; the cantilever beam is moved upward at the load-bearing frame device; Figure 7.2 The process of the fabric width being supported by the second clamp carrier of the horizontal traction device and the application of traction tension through the second clamp carrier are shown. Figure 7.3 It shows the preparation for the transfer of the fabric web to the additional clamping device in the case of continuous weaving process and in the case of the second and first clamping carriers moving in the traction direction; Figure 7.4The positioning of the additional clamping device and its clamping of the fabric web are shown; the holding tension in the fabric web is generated by the additional clamping device when released by the second clamping carrier, and the traction tension is borne by the first clamping carrier; Figure 7.5 It shows that during a continuous weaving process while maintaining holding tension in the fabric web, an additional clamping device travels along the traction direction with the clamped fabric web; the second clamping carrier travels back against the traction direction to transfer the fabric web from the first clamping carrier. Figure 7.6 This demonstrates the application of traction tension to the fabric web via a closed second clamping carrier, followed by the opening of the first clamping carrier; the release of the fabric web via an additional clamping device; and... Figure 7.7 The image shows the positioning of the cutting equipment and the cutting of the fabric width using the equipment. Detailed Implementation

[0022] exist Figure 1 The diagram shows the principle structure of the device according to the invention (i.e., the horizontal traction device for fabric width 1) in a three-dimensional view. Fabric width 1 is produced by a loom 2 (shown here in outline) and is drawn from the loom by means of a horizontal traction device 30 according to the prior art and an additional clamping device 10 connected thereto in the traction direction 5, the additional clamping device being used to clamp the leading end of a section of fabric width to maintain tension. The clamping by the additional clamping device occurs before the clamping carriers 3, 4 have released their clamping of the fabric width 1, which move within the movement area 17 of the horizontal traction device 30, and after releasing the fabric width 1, the clamping carrier moves back in the direction opposite to the traction direction 5 toward the loom 2.

[0023] The schematic diagram shows a loom 2 that manufactures fabric width 1. In the production direction or traction direction 5, fabric width 1 leaves the loom 2 and is supplied to a horizontal traction device 30. In the movement area 17 of the clamp carriers 3, 4, fabric width 1 is alternately clamped and moves in the production direction through a portion of the movement area 17 of the horizontal traction device 30 according to the prior art. On the side of the horizontal traction device 30 opposite to the loom, an additional clamping device 10 and a cutting device 11 are installed at a cantilever beam 9 fixed to the support frame device 8. Fabric width 1 is shown, which consists of a main section 1.1 and an auxiliary section 1.2.

[0024] The main section 1.1 is constructed as a three-dimensional fabric with a greater thickness than the respective auxiliary sections 1.2, which connect successive main sections 1.1 of the fabric width 1. The auxiliary sections 1.1 are particularly configured for clamping by means of clamping carriers 3 and 4, wherein the auxiliary sections 1.2 are configured to be clamped by means of clamping carriers 3 and 4 and by means of an additional clamping device 10, wherein clamping is performed such that the main sections 1.1 are damaged as little as possible during clamping.

[0025] The clamp carriers 3 and 4 are used to pull the fabric width 1 produced by the loom 2 from the loom 2 with traction tension and convey it through the horizontal traction device 30 so that the fabric width section at the front edge away from the loom 2 can be gripped by the additional clamping device 10. Additionally, the loom 2 has a platform 7 on its opposite side connected to the second clamp carrier 4 and reciprocating below the fabric width therewith, for placing fabric width sections. This platform supports the fabric width sections passing through the horizontal traction device 30 as they are displaced in the traction direction, and these fabric width sections can be placed on these platforms and transported away from the horizontal traction device 30 after being cut at their auxiliary sections 1 and 2.

[0026] The device according to the invention is used to generate holding tension when the clamping is released by the clamp carriers 3, 4 in the actual horizontal traction device 30. This ensures that the fabric width 1 does not sag and, for example, returns in the opposite direction of traction 5 to the second clamp carrier 4 (see...). Figure 7.5 It is not clamped between the first clamp carrier 3 and the second clamp carrier 4, or it will not be damaged in its thick three-dimensional structure due to the absence of tension or clamping caused by the additional clamping device 10.

[0027] In the horizontal traction device 30, the first clamping carrier 3, which is closest to the loom 2, is also referred to as the inlet clamping beam, while the other or second clamping carrier 4 is referred to as the outlet clamping beam. The second clamping carrier 4, referred to as the outlet clamping beam, is arranged or travels at the end of the available movement area 17 of the second clamping carrier 4 to maximize its distance from the first clamping carrier 3.

[0028] exist Figure 2 The auxiliary clamping device 10 is shown in a three-dimensional view. It has clamping bars 14 with multiple clamping elements 15 in the transverse direction relative to the fabric web 1 (not shown) being conveyed or produced. These clamping elements can be set by means of adjusting screws 20 with respect to their clamping pressure on the fabric web, and in particular on the auxiliary section 1.2 of the fabric web 1. The pre-tensioning of the clamping bars 14 is carried out by means of tensioning and clamping levers 18.

[0029] For ease of structure and operation, a handwheel 12 for manual positioning is provided at the auxiliary clamping device 10, and a locking device 13.1 for maintaining tension is connected to this handwheel. A tensioning and clamping lever 18 is connected to or activated by a locking device 13.2 for clamping the fabric web. The illustrated embodiment is an auxiliary clamping device 10 that can be manually moved to or from a clamping mode to a non-clamping state. The tensioning and clamping lever 18 activates the locking device 13.2 to maintain clamping. These locking devices 13.1 and 13.2 are each constructed as a unit consisting of a pawl and a gear with ratchet teeth at its outer periphery, and are used to prevent the set holding tension and the set clamping from releasing on their own, i.e., maintaining tension and clamping.

[0030] exist Figure 3 The image shows a three-dimensional view of the additional clamping device 10, which is compared with... Figure 2 The corresponding position is shown. However, the position swinging out of its clamping function is shown, which can be initiated and set using the corresponding operating lever 16 of the additional clamping device 10. This is necessary when the fabric web 1 is guided away from the loom 2 at a traction speed by means of, for example, the first clamping carrier 3 or the second clamping carrier 4 or both clamping carriers 3, 4, via the horizontal traction device 30 to the additional clamping device 10 arranged on the side of the support frame device 8 away from the loom.

[0031] The cantilever beam 9 (not shown) can be reciprocated on by means of a corresponding drive device or by operating its respective handwheel 12, an additional clamping device 10, and a cutting device 11 (not shown). The entire cantilever beam 9 is connected to the load-bearing frame device 8, such that the entire cantilever beam 9, along with the additional clamping device 10 and... Figure 3 The cutting device 11, which is not shown in the image, is capable of moving vertically.

[0032] exist Figure 4 The image shows a section of the clamping bar 14 of the additional clamping device 10, having clamping elements 15 and adjusting screws 20 belonging to the respective clamping elements 15. By means of the adjusting screws 20, in conjunction with the leaf springs 21 configured for three-dimensional compensation, the clamping force of the respective clamping element 15 is set at or on the fabric web 1. If multiple clamping elements 15 are provided across the width of the fabric web 1, the clamping force between the clamping surfaces 6 can be individually set at each location on the fabric web 1 for the corresponding length of the clamping element 15. However, it is also possible for successive clamping elements to maintain clamping in the fabric web 1 across its entire width by means of the additional clamping device 10 to maintain tension, especially when the clamping carriers 3 and / or 4 have released their clamping and thus released the tension in the fabric web 1.

[0033] In the fabric web 1, which consists of a main section 1.1 and an auxiliary section 1.2, the auxiliary section 1.2 is used for actual clamping by means of a clamping element 15, so that the main section 1.1 is not damaged by clamping. It is easy to understand that the fabric web 1, which does not have an intermediate section 1.2 for clamping, can also be clamped at the corresponding location or (relative to the manufacturing of the fabric web 1) at a specific time. Due to clamping, damage may occur to the main section 1.1, especially in its three-dimensional structure, in the clamped area, which must then be removed from the fabric composite for further processing.

[0034] Figure 5 A schematic diagram showing a side view of the auxiliary clamping device 10 is provided, in which the clamping element 15 is flipped open from the fabric web 1 (not shown) by means of the tensioning and clamping lever 18, that is, in a non-clamped position. In principle, it is also possible to operate the auxiliary clamping device 10 by means of a drive device 22 instead of the handwheel 12, via which the corresponding necessary positioning movement of the auxiliary clamping device 10 is achieved on the cantilever beam 9.

[0035] exist Figure 6 The three-dimensional diagram shows a cutting device 11 adjustablely arranged on a cantilever beam 9 along with an additional clamping device 10 (not shown). The cutting device 11 is equipped with a handwheel 12 for manual positioning on the cantilever beam 9 and a locking device 23 that ensures the set cutting position is maintained. Instead of the handwheel 12, a drive unit 26 for positioning the cutting device 11 on the cantilever beam 9 may also be provided. The cutting device 11 has a transverse guide 24 that extends in width for cutting fabric sections to a fixed length. A clamping device 25 is provided for the actual cutting process, clamping the fabric section 1 so that it can be cut to a fixed length at the corresponding location. In this embodiment, a cutting wheel 27, guided in width of the fabric section at the transverse guide 24, serves as the actual cutting device 11. Other technical solutions, such as a cutting blade, water jet, or laser beam, are also conceivable instead of the cutting wheel.

[0036] In having corresponding multiple sub Figures 7.1 to 7.7 Figure 7 shows the different stages of conveying, clamping, releasing, length cutting, and placing of fabric segments under the combined action of the horizontal traction device 30 and the additional clamping device 10.

[0037] exist Figure 7.1The schematic diagram, shown in a side view, illustrates the overall assembly according to the invention, namely the horizontal traction device 30 and the auxiliary clamping device 10. The loom by which the fabric width 1 is woven is not shown here, wherein the fabric width 1 is shown as a fabric width composed of a three-dimensional main section 1.1 and a substantially two-dimensional auxiliary section 1.2. The fabric width 1 is first guided from the loom 2 through the actual horizontal traction device 30, which has two clamping carriers 3,4. Immediately following this, the horizontal traction device 30 is provided with a support frame device 8. A cantilever beam 9 is arranged at the support frame device 8, and the auxiliary clamping device 10 and the cutting device 11 are adjustablely mounted on this cantilever beam. The auxiliary clamping device 10 and the cutting device 11 move horizontally independently of each other on the cantilever beam 9 and move vertically together with the cantilever beam 9. For this purpose, the cantilever beam 9 is correspondingly connected to the support frame device 8 for vertical mobility. In the actual horizontal traction device 30, clamping carriers 3 and 4 are provided, which are movable in the movement area 17 on carriers not specifically marked, and which clamp or de-clamp the fabric web 1 at different locations and at different times (sometimes in parallel, sometimes completely independently of each other) in the movement area 17. Actual horizontal traction devices known in the prior art have reference numeral 30.

[0038] The clamp carriers 3 and 4, in the open state, are located on the loom-facing side of the movement area 17 of the horizontal traction device 30. The cantilever beam 9 travels upward to its upper position, making the horizontal traction device 30 accessible from the side away from the loom. The additional clamping device 10 and the cutting device 11 are not engaged.

[0039] exist Figure 7.2As shown, the fabric web 1 is introduced into the horizontal traction device 30 and held clamped by the second clamp carrier 4, which moves along the traction direction 5, and transported with its front edge facing the end of the movement area 17 of the horizontal traction device 30. The second clamp carrier 4 is closed (see arrow) and clamps the fabric web 1 for this purpose, preferably but not forcibly in the area of ​​the auxiliary section 1.2, and moves away from the loom and towards the support frame device 8 within the movement area 17 of the horizontal traction device 30 under the condition of generating fabric traction tension. Here, the first clamp carrier 3 is in the open state and initially continues to be located at the starting point of the movement area 17 of the horizontal traction device 30, i.e., its side facing the loom. To prevent the front edge of the fabric web 1 from sagging and to support it, a travelable platform 7 is provided. This platform is coupled to the second clamp carrier 4 and travels with it. Depending on the planned single length of the fabric web 1, a combination of multiple travelable platforms 7 may also be provided. After the desired fabric section is cut to length in subsequent process steps, the second clamp carrier 4 can be decoupled from one or more platforms 7, and the fabric section on it can be removed. The cantilever beam 9, together with the additional clamping device 10 and the cutting device 11 located thereon, remains in the upper position at the load-bearing frame device 8.

[0040] The closed second clamp carrier 4 moves along the production direction or traction direction 5 at the production speed or product traction speed, thus generating the traction tension required for manufacturing the fabric width 1. While simultaneously driving the platform 7, the already woven leading end of the fabric width 1 is placed and supported on the platform.

[0041] Figure 7.3 The following scenario is now shown, in which the second clamping carrier 4 has reached the end of the movement area 17 of the horizontal traction device 30. Here, while maintaining the traction tension of the fabric, the second clamping carrier 4 moves the clamped fabric web 1 along the traction direction through the movement area 17 of the horizontal traction device 30, so that the leading end of the fabric web 1 placed on the platform 7 or the already woven fabric web 1 passes through the support frame device 8 and can be gripped by the additional clamping device 10.

[0042] Therefore, the cantilever beam 9, together with the auxiliary clamping device 10 and the cutting device 11 located thereon, moves vertically downward to the working position (see arrow), and the front edge of the fabric width 1 is introduced into the auxiliary clamping device 10 and the cutting device 11, which are in the open state (i.e., the fabric width 1 is not fixed). Here, the working position is determined such that the fabric width 1 is placed without deviation on the lower clamping surface 6 of the auxiliary clamping device 10 (see also...). Figure 4 )superior.

[0043] Furthermore, the first clamping carrier 3, once opened, moves simultaneously with the second clamping carrier 4 along the traction direction 5, so as to facilitate subsequent process steps (see...). Figure 7.4 It can clamp the fabric width 1.

[0044] exist Figure 7.4 The next process step is shown. The fabric web 1, guided along the traction direction 5, is first acquired and clamped by the additional clamping device 10 (see arrow). This can preferably be done in the area of ​​auxiliary section 1.2, but it is not mandatory and depends on the requirements of the product or its further processing. For this purpose, the additional clamping device 10 travels horizontally on the cantilever beam 9 of the supporting frame device 8 and is positioned accordingly, taking into account the available length of the cantilever beam 9. By clamping the fabric web 1, the additional clamping device 10 assumes a holding tension along the direction of the loom, more precisely along the direction of the clamp carriers 3,4 of the horizontal traction device 30. This holding tension is less than the traction tension applied by the clamp carriers 3,4 and prevents the fabric web 1 from sagging. Due to the low production speed of the fabric web 1 when manufacturing three-dimensional fabrics, the holding tension decreases only slightly to a negligible degree, even though the fabric web 1 is continuously produced and pulled by the horizontal traction device 30. However, by further horizontally traveling along the traction direction by the additional clamping device 10, the holding tension can be finely adjusted as needed (see also...). Figure 7.5 ).

[0045] After the additional clamping device 10 has been configured to maintain tension, the first clamping carrier 3 assumes the clamping of the fabric web 1 within the horizontal traction device 30 (see arrow), and thus also assumes the full tension of the fabric web 1 along the loom direction. Immediately thereafter, the second clamping carrier 4, located near the end of the movement area 17 of the horizontal traction device 30 along the traction direction 5, releases the fabric web 1 (see arrow). The traction tension is now applied by the first clamping carrier 3, which further feeds the fabric web 1 along the traction direction 5 at the previously mentioned production speed.

[0046] exist Figure 7.5 The diagram illustrates how the second clamping carrier 4, with the horizontal traction device 30 engaged, moves back towards the first clamping carrier 3 against the traction direction 5. Here, the second clamping carrier 4 actuates one or more platforms 7 coupled to it. The additional clamping device 10 continues to maintain the holding tension of the fabric web 1, thus allowing one or more platforms 7 to return below the fabric web 1 without causing the fabric web placed on the platform 7 to move back with it. During the continuous weaving process ensured by the first clamping carrier 3 at the production speed, the additional clamping device 10, along with the clamped fabric web 1, is finely adjusted in the traction direction to maintain the holding tension in the fabric web 1.

[0047] Once such Figure 7.6As shown, the opened second clamping carrier 4 has reached the closed first clamping carrier 3 through its movement against the traction direction, and the second clamping carrier 4 resumes clamping the fabric web 1 (see arrow). Immediately afterwards, the first clamping carrier 3 opens and releases the fabric web 1 (see arrow). Therefore, the second clamping carrier 4 again assumes the traction tension. The auxiliary clamping device 10 opens and releases the fabric web 1 (see arrow), that is, it releases the holding tension.

[0048] By re-moving the second clamping carrier 4 along the end of the horizontal traction device 30 away from the loom (this process is not shown here), the manufactured fabric web 1 is further continuously conveyed along the traction direction at the production speed. The manufactured fabric web is then placed on one or more platforms 7 driven by the second clamping carrier 4. Also not shown here, the now-opened first clamping carrier 3 can return to the loom-facing side of the horizontal traction device 30. However, it can also remain in its position within the movement area 17 of the horizontal traction device 30, or move along the traction direction.

[0049] exist Figure 7.7 The diagram now depicts a situation where a section of fabric width 1, to be cut to a fixed length, has been woven on the loom side. For this purpose, the cutting device is positioned accordingly in the horizontal direction on the cantilever beam 9. Preferably, the cutting or fixed-length cutting of the fabric width 1 is performed in the area of ​​the auxiliary section 1.2. However, the cutting can also be performed at any other desired location on the fabric width 1, provided that the length of the supporting frame device 8, and more precisely, the available length of the cantilever beam 9, allows it.

[0050] During the cutting process, the additional clamping device 10 is usually turned on.

[0051] However, it is also advantageous in some fabrics to apply a slight clamping force to the fabric width 1 during the cutting process using an additional clamping device 10. But this application is not shown here.

[0052] After the fabric width 1 is cut to a fixed length, the fabric width section placed on the platform 7 can be removed from the device for further storage or transportation, and the process can be restarted from scratch as previously described.

[0053] It is not shown here but is equally feasible according to the method of the present invention, in which only the first clamping carrier 3 is used instead of the first clamping carrier 3 and the second clamping carrier 4.

[0054] In the closed state, the first clamping carrier 3, with the fabric traction tension applied, moves at a production speed along the traction direction 5 toward the support frame device 8 within the movement area 17 of the horizontal traction device 30, and here conveys the clamped fabric web 1 to the engagement area of ​​the additional clamping device 10. Here, the fabric web 1 is also acquired and clamped by the additional clamping device 10 to generate a holding tension along the direction of the loom, more precisely, along the direction of the first clamping carrier 3 of the horizontal traction device 30. In the case where only one clamping carrier (e.g., the first clamping carrier 3 here) exists, the weaving process is now stopped before it is opened and the fabric web 1 is released, because after the first clamping carrier 3 is opened, there is no longer a clamping carrier generating fabric traction tension in engagement. The additional clamping device 10 still applies only a holding tension along the direction of the loom, which is less than the traction tension. The weaving process restarts only after the first clamping carrier 3, activated by the horizontal traction device 30, has moved back in the direction toward the loom and regained traction tension by re-clamping the fabric web 1. The first clamping carrier 3 then conveys the clamped fabric web 1 at production speed along the traction direction 5. The fabric web 1 is clamped by the auxiliary clamping device 10 and cut by the cutting device 11. Figures 7.1 to 7.7 It proceeds in a similar manner to what has already been described.

[0055] The actual horizontal traction device 30 is known, while the device according to the invention is a device in which the known portion of the horizontal traction device 30 is supplemented by an additional clamping device 10, which replaces the previously manual operation by means of a mechanical device, i.e., keeping the produced fabric section or the leading end of the fabric section 1 so long that the fabric tension or holding tension in the fabric section 1 is maintained after the clamping of the fabric section is released by the clamp carriers 3, 4; and is supplemented by a cutting device 11, which is used to cut or cut the fabric section to a fixed length.

[0056] List of reference numerals in the attached diagram: 1. Fabric width 1.1 Main Segment 1.2 Auxiliary Section 2. Loom 3 First clamping carrier 4 Second clamp carrier 5. Traction direction 6 Clamping surface 7 Platforms 8. Load-bearing frame assembly 9 Cantilever Beam 10 Additional clamping devices 11 Cutting equipment 12 handwheels 13.1 Tension Locking Device 13.2 Clamping and locking device 14 Clamping strips 15 Clamping elements 16. Manipulating levers 17. Fixture carrier movement area 18 tensioning and clamping levers 20 Clamping element adjusting screws 21 Three-dimensional compensating leaf spring 22 Additional clamping device drive unit 23 Cutting equipment locking equipment 24. Lateral guide section of cutting equipment 25 Cutting equipment clamp 26. Cutting equipment drive unit 27 Cutting Wheel 30. Horizontal traction device (prior art)

Claims

1. A device for drawing a fabric web (1) from a loom (2), the fabric web being clamped at least temporarily in a motion zone (17) at a production speed in its drawing direction (5) by at least one reciprocating and frame-guided clamp carrier (3), Its features are, On the side of the clamp carrier (3) away from the loom, an additional clamping device (10) is arranged on the side of the support frame device (8) away from the loom. The additional clamping device (10) clamps the fabric web (1) before the clamp carrier (3) has released its clamping on the fabric web (1) and subsequently moves in the opposite direction of the traction direction (5) toward the loom (2).

2. The apparatus according to claim 1, characterized in that, The additional clamping device (10) is installed on the cantilever beam (9) arranged at the load-bearing frame device (8).

3. The apparatus according to claim 1 or 2, characterized in that, The clamp carrier (3) and another clamp carrier (4) are provided between the loom (2) and the support frame device (8).

4. The apparatus according to any one of claims 1 to 3, characterized in that, The additional clamping device (10) can travel horizontally and / or can travel vertically with the cantilever beam (9) at the cantilever beam (9).

5. The apparatus according to claim 4, characterized in that, The additional clamping device (10) can move at the cantilever beam (9) and / or move with the cantilever beam (9) by means of a drive or manually.

6. The apparatus according to any one of claims 1 to 5, characterized in that, In addition to the additional clamping device (10), a cutting device (11) for cutting the fabric width (1) is also provided.

7. The apparatus according to any one of claims 1 to 6, characterized in that, The additional clamping device (10) and the cutting device (11) each have their own manual, electric, hydraulic or pneumatic drive on their right and left sides, respectively.

8. The apparatus according to claim 6, characterized in that, Each of the additional clamping device (10) and the cutting device (11) is provided with a manual, electric, hydraulic or pneumatic drive device in the middle region.

9. The apparatus according to any one of claims 6 to 8, characterized in that, The additional clamping device (10) and the cutting device (11) are arranged on the guide portion of the cantilever beam (9) and are configured to be flexible and torsional.

10. The apparatus according to any one of claims 6 to 9, characterized in that, The cutting device (11) can travel on the cantilever beam (9) independently of the additional clamping device (10).

11. The apparatus according to any one of claims 1 to 10, characterized in that, The additional clamping device (10) can be moved manually or motorized, wherein the holding tension applied to the fabric web (1) is less than the traction tension applied by the clamp carrier (3,4), and is maintained by means of locking devices (13.1,13.2) or self-locking mechanisms.

12. The apparatus according to any one of claims 1 to 11, characterized in that, The additional clamping device (10) has a through, adjustable clamping force, operable clamping element, or has each of the operable clamping elements (15) whose clamping force can be adjusted individually.

13. The apparatus according to any one of claims 1 to 12, characterized in that, The fabric web (1) has auxiliary sections (1.2) between the main sections (1.1) for clamping by means of clamping carriers (3,4), and the clamping carriers (3) and the other clamping carriers (4) at least temporarily grip and clamp the fabric web (1), wherein a rollable and deployable support system is provided between the movement areas (17) of the clamping carriers (3) and the other clamping carriers (4), the support system forming a support pad for the fabric web (1) between the loom (2) and the support frame device (8), and wherein a platform (7) is arranged connected to the other clamping carriers (4) and reciprocates with them below the fabric web (1).

14. A method for drawing a fabric width (1) from a loom (2), wherein at least one clamping carrier (3) clamps, at least temporarily, between the loom (2) and a support frame device (8) while maintaining its traction tension, clamping and holding the fabric width (1), and thereby moving at a production speed in a motion zone (17) in the direction of the support frame device (8) by means of a drive device. Its features are, An additional clamping device (10) is provided on the side of the support frame device (8) away from the loom. The additional clamping device clamps the fabric web (1) while maintaining tension before the clamp carrier (3) has released its clamping on the fabric web (1) and moved in the opposite direction of the traction direction (5) toward the loom (2).

15. The method according to claim 14, wherein the traction tension of the at least one clamp carrier (3) is greater than the holding tension of the additional clamping device (10).

16. The method according to claim 14 or 15, characterized in that, The additional clamping device (10) travels horizontally and / or vertically with the cantilever beam (9) mounted on the load-bearing frame device (8).

17. The method according to any one of claims 14 to 16, characterized in that, Another clamping carrier (4) is arranged in the movement area of ​​the clamping carrier (3), and the other clamping carrier alternately clamps the fabric width (1) with the clamping carrier (3).

18. The method according to claim 16 or 17, characterized in that, The fabric width (1) is cut using a cutting device (11) that is also arranged on the cantilever beam (9) in addition to the additional clamping device (10).

19. The method according to claim 18, characterized in that, The additional clamping device (10) is swung upwards.

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