Deformation Machine
By using pivotable suction devices and contact pressure rollers in the deformation machine for stretching and curling yarns, the deflection problem caused by large spacing during the yarn is solved, and the reliable transfer of yarn is achieved and Precise guidance.
Patent Information
- Application Number
- CN202080046582.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2019-06-29
- Filing Date
- 2020-06-24
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2040-06-24
AI Technical Summary
During the yarn threading process, the spacing between the blower and the suction port is large, making it difficult to reliably guide the yarn to the winding device, especially in the fine yarn. Deflection may occur in the case.
Using a pivotable suction device, the precise positioning and minimum spacing between the guide tube and the suction tube is achieved through a stepper motor. The suction tube can move within a 180° rotation angle and form a smaller than that with the blowing end of the guide tube. 150mm spacing to ensure reliable grasping and transfer of yarn. At the same time, contact pressure rollers and impact plates are used to assist the yarn through to reduce deflection.
It effectively shortens the spacing during the yarn penetration process, ensures that the yarn is reliably transferred to the winding device, reduces deflection caused by air resistance, and improves the transfer accuracy and efficiency of the yarn.
Smart Images
Figure CN114007968B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a texturing machine for drawing and crimping synthetic yarns according to a first aspect. Background Art
[0002] A deformation machine of this type is known from WO 2004 / 018749 A1.
[0003] Known texturing machines have a plurality of processing stations for stretching and curling a yarn at each processing station. To this end, a plurality of delivery units, a plurality of processing devices and a winding device for winding the curled and stretched yarn to form a bobbin are arranged in each processing station. To this end, the delivery units and the processing devices are usually arranged in the frame to form the yarn direction. In order to facilitate the threading of the yarn in one of the processing stations at the beginning of the process, the known texturing machine has an airflow auxiliary device, which has a plurality of guide tubes and a plurality of ejectors. In this way, the yarn can be supplied to the winding device in the processing station by the airflow. The winding device has a suction system, whereby the yarn is received and guided to be threaded into the winding device.
[0004] For this reason, in some cases, it is necessary to bridge a relatively large yarn spacing between the blowing opening and the suction opening of the auxiliary device to transfer the yarn in known texturing machines. However, this spacing requires a precise alignment of the blowing opening and the suction opening of the airflow auxiliary device and the suction system in the winding device relative to each other. Summary of the invention
[0005] The object of the present invention is therefore to improve a texturing machine of this type for drawing and crimping synthetic yarns in such a way that during threading of the yarn at the beginning of the process, a secure guidance of the yarn in one of the processing stations to the winding device can be achieved.
[0006] According to the invention, this object is achieved by a suction device having a pivotable suction tube which can be arranged at a short distance opposite the blowing end of the guide tube for picking up the yarn.
[0007] The invention has the particular advantage that the auxiliary device interacts with a positionable suction device for collecting the yarn in the winding device. The smallest possible spacing between the blowing end of the guide tube and the suction device can be achieved with the pivotable suction tube. In addition, the suction tube can be positioned with high precision relative to the blowing end of the guide tube due to its movability.
[0008] A refinement of the texturing machine according to the invention is particularly advantageous in which the distance between the suction opening of the suction tube and the blowing opening of the guide tube in the transfer position of the suction tube is less than 150 mm in order to transfer both fine and coarse yarns in a securely gripped manner. In the case of larger distances of more than 150 mm, air resistance can lead to undesired deflections, especially in the case of fine yarns.
[0009] In order to be able to supply the yarn obtained from the suction pipe directly to the winding device, it is best to implement an improved solution of the present invention, in which the suction pipe of the suction device is arranged upstream of the winding device in the yarn direction and can move within a rotation angle of at least 180°. Thus, on the one hand, the distance between the suction opening of the suction pipe and the blowing opening of the blowing end can be further reduced. On the other hand, the yarn continuously moving toward the suction pipe can be transferred by the movement of the suction pipe of the winding device. Thus, for example, it is known that the clamping disc used to hold the winding tube has a gripping mechanism and a cutting mechanism to obtain the moving yarn.
[0010] In order to realize the ideal accurate positioning and alignment of the suction pipe with respect to the blowing end of the guide pipe, a stepper motor is preferably used as a pivot drive. It is then feasible to repeatedly accurately position the suction pipe with respect to the fixed guide pipe blowing end.
[0011] The yarn in the processing station is usually supplied to the winding device via a delivery unit. In order to thread the yarn on the delivery unit, the following improvement of the invention is provided, wherein the guide tube has one of the ejectors with a suction tube opposite the blowing end of one of the guide tubes, wherein the suction end of the suction tube is assigned to a pivotable contact pressure roller of one of the delivery units, the contact pressure roller interacting with the delivery shaft for guiding the yarn, and the blowing end of the other guide tube is arranged upstream of the contact pressure roller in the yarn path. The yarn can then be guided through the gap between the contact pressure roller and the delivery shaft during operation. For threading, the contact pressure roller can be pivoted so that threading can be achieved.
[0012] For this reason, the line between the blowing end of the upstream guide tube and the suction end of the downstream suction pipe intersects with the motion trajectory of the contact pressure roller. So it is guaranteed that the yarn tensioned between the blowing end and the suction end can only be obtained because of the motion of the contact pressure roller.
[0013] For this reason, the contact pressure roller remains on the active clamping support, which can be guided between the threading position and the clamping position by the support drive. After the yarn has been threaded, the contact pressure roller can be automatically guided to the clamping position.
[0014] Since the process device and the delivery unit cannot be arranged one after another in a machine frame in a straight yarn run, a deflection between the process device and the delivery unit is inevitable, and the improvement of the texturing machine according to the invention is particularly relevant in which the suction end of the downstream suction pipe is assigned an impact plate which is arranged opposite to the blowing opening of the blowing end of the upstream guide pipe. The loose yarn end blown out of the blowing opening of the blowing end is then caught by the opposite impact plate and allows the loose yarn end to be directly obtained by the suction opening at the suction end of the suction pipe. In this way, the yarn deflection can be overcome, especially without strong bends in the guide pipe and suction pipe.
[0015] The modification of the texturing machine according to the invention, in which the upstream guide tube has a further ejector with a suction tube connected to the outlet of the heating tube of the heating device, is preferably used in the following processing stations, where a heat treatment is required to relax the tension before winding the yarn. The yarn can thus be received through the inlet of the heating tube of the heating device and fed to the winding device in an automatic manner with the aid of an auxiliary device. This results in significant advantages when threading the yarn in the processing station, which minimize the operator's efforts and also ensure that the yarn is reliably transferred to the winding device. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In the following, the deformation machine according to the invention is explained in more detail by way of example and with reference to the accompanying drawings, in which:
[0017] Figure 1 A view schematically showing a processing station of a texturing machine according to the invention;
[0018] Figure 2 Schematically shown Figure 1 A plan view of a winding device of an embodiment of the present invention;
[0019] Figure 3.1 and Figure 3.2 Schematically showing the Figure 1 Side view of a delivery unit of an embodiment of the present invention. DETAILED DESCRIPTION
[0020] The processing station of the texturing machine for drawing and crimping synthetic yarn according to the invention is Figure 1 . Such a texturing machine usually has a plurality of processing stations, which are arranged side by side in a machine frame. The processing stations in the texturing machine have the same configuration here, so that each processing station has a plurality of delivery units, a plurality of processing devices and a winding device for winding bobbins. The delivery units, the processing devices and the winding device for winding bobbins are arranged here to form a specific yarn path in the machine frame. Since the processing devices and the delivery units have a smaller width than the winding devices, a plurality of winding devices are then arranged in a multi-layered manner, overlapping and adjacent to each other in the machine frame. Since the machine structure of such a texturing machine is well known, Figure 1 Only one of the processing stations is shown with the delivery unit, the processing device and the winding device installed therein.
[0021] In accordance with Figure 1 In the exemplary embodiment of the present invention, a total of three delivery units 3, 7 and 19 are provided for guiding the yarn. The first delivery unit 3 is formed by a driven godet roller 3.1 and an overfeed roller 3.2. The first delivery unit 3 and the subsequent second delivery unit 7 here enclose a so-called deformation zone, in which the first heating device 4, the cooling device 5 and the crimping device 6 are arranged as treatment devices. The second delivery unit 7 is also formed by a driven godet roller 7.1 and an overfeed roller 7.2 in this exemplary embodiment.
[0022] In a further sequence, the second delivery unit 7 is followed by a second heating device 10 and a third delivery unit 19, by which the yarn is guided to a winding device 21. The third delivery unit 19 is formed in this case by a delivery shaft 19.1 and a contact pressure roller 19.2, which is held on the circumference of the driven delivery shaft 19.1 by a clamping support 19.3. The clamping support 19.3 is assigned a support drive 19.4, by means of which the contact pressure roller 19.2 can be pivoted.
[0023] The winding device 21 is shown schematically and has a bobbin holder 21.1, a drive roller 21.4 and a plurality of clamping discs 21.2 arranged at the end of the bobbin holder 21.1 and carrying winding tubes (not shown here). The drive roller 21.4 is driven. In order to guide the yarn when winding the bobbin, a traversing device 21.5 with a traversing yarn guide driven in a reciprocating manner is arranged upstream of the drive roller 21.4.
[0024] The second heating device 10, the third delivery unit 19 and the winding device 21 are assigned an air flow auxiliary device 11 in order to be able to thread the yarn at the beginning of the process. The auxiliary device 11 interacts with a suction device 22 arranged upstream of the winding device 21 in the yarn path. The suction device 22 has a pivotable suction tube 22.1 in this embodiment, which can be pivoted between a plurality of positions by means of a pivot drive 22.2. Figure 1 In the situation shown, the suction tube 22.1 is located in the transfer position in which the yarn threading takes place.
[0025] In the transfer position of the suction tube 22.1, the suction opening 22.3 of the suction tube 22.1 is exactly opposite to the blowing opening 16 of the blowing end 15.2 of the guide tube 12.2. The guide tube 12.2 of the auxiliary device 11 has an ejector 13.2 at the end opposite to the blowing end 15.2. The ejector 13.2 has a suction tube 14.2 on the suction side, and the suction end 17.2 equipped with the suction opening 18. The suction end 17.2 of the ejector 13.2 is assigned to the third delivery unit 19 at a short distance.
[0026] A further guide tube 12.1 of the auxiliary device 11 is arranged on the opposite side of the third delivery unit 19. The guide tube 12.1 upstream of the third delivery unit 19 projects with its blowing end 15.1 toward the third delivery unit 19. The guide tube 12.1 has a further ejector 13.1 at the end opposite to the blowing end 15.1, which is connected to a suction tube 14.1 on its suction side. The suction tube 14.1 is connected to the outlet 10.3 of the heating tube 10.1 of the heating device 10.
[0027] In order to thread the yarn 24, the ejectors 13.1 and 13.2 are connected to a compressed air source (not shown here), thereby generating a blowing airflow at the respective blowing ends 15.1, 15.2 of the guide tubes 12.1, 12.2. A suction airflow is generated at the suction ends 17.1, 17.2 of the suction tubes 14.1, 14.2. The suction effect of the ejector 1.31 is propagated to the inlet 10.2 of the second heating device 10 by means of the connection with the heating tube 10.1. In this regard, a suction airflow is present at the inlet 10.2 of the heating device 10, and the loose yarn end can be sucked into the heating tube 10.1 due to the suction airflow.
[0028] In order to start the process for stretching and crimping the synthetic yarn at this treatment station, the yarn 24 is drawn from the feed bobbin 1.1. The feed bobbin 1.1 is arranged on the creel position 1 and is joined to the standby bobbin 1.2. For this purpose, the yarn 24 is received by the hand-held ejector 8 and is passed through a plurality of turns onto the first delivery unit 3 and subsequently into the first heating device 4, the cooling device 5 and the crimping device 6. Next, the yarn 24 is placed on the second delivery unit 7 by means of a plurality of turns of winding. Now, the yarn is fed to the inlet 10.2 of the heating tube 10.1 and is cut off so that the loose yarn end is sucked into the heating tube 10.1 due to the suction air flow of the ejector 13.1 and is guided to the blowing end 15.1 of the guide tube 12.1. In order for the yarn 24 to be placed on the third delivery unit 19, reference is also made to Figure 3.1 and Figure 3.2 .
[0029] The third delivery unit 19 is Figure 3.1 and Figure 3.2 Different working conditions before and after the threading procedure are shown. Figure 3.1 The working state of the third delivery unit 19 when the yarn is threaded through the auxiliary device 11 is thus shown. Figure 3.2 The third delivery unit 19 is shown ready for operation.
[0030] As from Figure 3.1 It can be seen from the illustration that the suction end 17.2 of the suction tube 14.2 is assigned an impact plate 20. The impact plate 20 extends in the region of the suction opening 18 of the suction tube 14.2.
[0031] The blowing end 15.1 is spaced apart from the impact plate 20 by means of the blowing port 16 on the side opposite to the third delivery unit 19. The contact pressure roller 19.2 is guided to the threading position by means of the support drive 19.4 and the clamping support 19.3 and forms a gap with the delivery shaft 19.1. In this state, the loose yarn end can be blown out toward the impact plate 20 by means of the blowing end 15.1, where the suction air flow acting on the suction end 17.2 obtains the yarn and further guides the yarn through the guide tube 12.2. In this state, the yarn 24 between the blowing end 15.1 and the suction end 17.2 forms a connecting line that intersects the movement trajectory of the contact pressure roller 19.2. By pivoting the contact pressure roller 19.2, the yarn 24 can then be automatically guided into the clamping gap between the contact pressure roller 19.2 and the delivery shaft 19.1. For this purpose, the support drive 19.4 is activated and the contact pressure roller 19.2 is guided into its clamping position.
[0032] As from Figure 1 As can be seen from the diagram of FIG, the yarn for transfer into the winding device 21 is taken up by the suction pipe 22.1 of the suction device 22. For this purpose, the blowing end 15.2 faces the winding device 21 with the blowing opening 16. The suction pipe 22.1 is held in the transfer position by the pivot drive 22.2. In the transfer position, a spacing is formed between the suction opening 22.3 of the suction pipe 22.1 and the blowing opening 16 of the blowing end 15.2. This spacing is Figure 1 1 is indicated by the capital letter A. The spacing A between the suction pipe 22.1 and the blowing end 15.2 is realized in the form of less than 150 mm. In this transfer position, the loose yarn end is blown out of the blowing end 15.2 through the guide pipe 12.2 due to the blowing air flow of the ejector 13.2 and is immediately received by the suction opening 22.3 of the suction pipe 22.1 of the suction device 22 opposite the latter. The suction pipe 22.1 is connected to a waste line not shown here to guide the yarn to a waste container.
[0033] To further explain, not only refer to Figure 1 , also refer to Figure 2 The winding device 21 is Figure 2 In this regard, the following description applies to both figures.
[0034] As from Figure 2 It can be seen that the winding tube 21.3 is clamped between the clamping discs 21.2 and is held on the drive roller 21.4 via the bobbin holder 21.1. Figure 2 The suction tube 22.1 in the transfer position is also in the transfer position. As soon as the suction tube 22.1 has acquired the yarn, the pivot drive 22.2 is activated to pivot the suction tube 22.1 by a rotation angle in the range of at least 180°. The suction tube 22.1 can then be guided to the clamping disk 21.2, which completes the acquisition of the yarn. This situation is achieved by Figure 2 The pivot drive 22.2 of the suction tube 22.1 is preferably implemented in the form of a stepper motor, so that reproducible and precise positioning can be set for picking up and transferring the yarn. Figure 2 The rotation angle of the suction pipe in is indicated by the reference symbol α.
[0035] As from Figure 1 As can be seen from the illustration of the auxiliary device 11, the guide tube 12.1 is arranged below the platform 23. Since the winding device 21 of the adjacent processing station is arranged in a layered manner below or above the winding device 31 shown, the adjacent guide tubes 12.2 of the adjacent auxiliary devices have different lengths. Therefore, the winding device is preferably arranged on a winding frame, which provides an operator corridor relative to the processing frame holding the second heating device 10. In this regard, the guide tube 12.1 is preferably arranged to cross the lower platform 23. For this purpose, the condition of the operator corridor is Figure 1 is schematically shown in FIG.
[0036] But in principle, Figure 1 The arrangement of shown auxiliary device 11 is not limited to the concrete cross-sectional shape of frame. Importantly, the distance that is formed between blowing end 15.1,15.2 and suction end 17.1,17.2 and stretches freely keeps as short as possible so that when threading yarn, obtain reliable and reproducible yarn guiding.
Claims
1. A texturing machine for stretching and curling synthetic yarns, the texturing machine having a plurality of processing stations, wherein: Each of the processing stations has a plurality of delivery units (3, 7, 19), a plurality of processing devices (4, 5, 6, 10) and a winding device (21) for winding bobbins, wherein each of the processing stations has an air flow assistance device (11), the air flow assistance device (11) having a plurality of guide tubes (12.1, 12.2) for threading the yarn, wherein the guide tubes (12.1, 12.2) have ejectors (13.1, 13.2), and wherein the air flow assistance device (11) is connected to a blower end (15.1, 15.2) on one of the guide tubes (12.2) and is connected to a winding device (21) assigned to the winding device (21). ) interacts with a suction device (22) of the guide tube (12.2), characterized in that the suction device (22) has a pivotable suction tube (22.1), which can be at a short distance from the blowing end (15.2) of one of the guide tubes (12.2) and is positioned opposite the blowing ends (15.1, 15.2) in order to obtain the yarn, wherein in the transfer position of the suction tube (22.1), the distance (A) between the suction port (22.3) of the suction tube (22.1) and the blowing port (16) of the blowing end (15.2) of one of the guide tubes (12.2) is less than 150 mm.
2. The deformation machine according to claim 1, characterized in that: The suction tube (22.1) is arranged upstream of the winding device (21) in the yarn path and is movable within a rotation angle (α) of at least 180°.
3. The deformation machine according to claim 1, characterized in that: The suction tube (22.1) is connected to a pivot drive (22.2), and the pivot drive (22.2) is formed by a stepper motor.
4. The deformation machine according to claim 1, characterized in that: The guide tubes (12.1, 12.2) have the ejector (13.1, 13.2) with the first suction tube or the second suction tube, the ejector (13.1, 13.2) being opposite to the blowing end (15.1, 15.2), the suction end (17.2) of the second suction tube of one of the guide tubes being assigned to a pivotable contact pressure roller (19.2) of one of the delivery units (3, 7, 19), the contact pressure roller (19.2) interacting with the delivery shaft (19.1) for guiding the yarn, and the blowing end (15.1, 15.2) of the other guide tube (12.1) being arranged upstream of the contact pressure roller (19.2) in the yarn path.
5. The deformation machine according to claim 4, characterized in that: A line connecting the blowing end (15.1) of the upstream guide tube (12.1) and the suction end (17.2) of the downstream second suction tube (14.2) intersects with the movement trajectory of the contact pressure roller (19.2).
6. The deformation machine according to claim 5, characterized in that: The contact pressure roller (19.2) is held on a movable clamping support (19.3), which can be guided between a threading position and a clamping position by a support drive (19.4).
7. The deformation machine according to claim 4, characterized in that: The suction end (17.2) of the second suction pipe (14.2) downstream is assigned an impact plate (20), and the impact plate (20) is spaced apart from the blowing port (16) of the blowing end (15.1) of the upstream guide pipe (12.1).
8. The deformation machine according to claim 4, characterized in that: The upstream guide pipe (12.1) has an ejector (13.1) with a first suction pipe (14.1), and the suction end (17.1) of the first suction pipe (14.1) is connected to the outlet (10.3) of the heating pipe (10.1) of the heating device (10).