Winding Machine and its Control Method

Abstract

This invention relates to a winding machine, comprising: a vacuum generating device; a suction nozzle connected to a sleeve having at least a first outlet; a first waste discharge pipe; a first filtering device having a first waste collection box and connected to the vacuum generating device via a first waste suction pipe, the first filtering device being connected to a first outlet of the sleeve via a first waste feed pipe, the first filtering device being provided with a first outlet nozzle connected to the first waste collection box and the first waste discharge pipe, wherein the sleeve of the suction nozzle is provided with a second outlet different from the first outlet, the winding machine including a second filtering device, the second filtering device having a second waste collection box connected to the vacuum generating device via a second waste suction pipe, the second filtering device being connected to a second outlet of the sleeve via a second waste feed pipe, the second filtering device being provided with a second outlet nozzle connected to the second waste collection box and the second waste discharge pipe. The winding machine of this invention increases productivity.

Description

Technical Field

[0001] The present invention relates to a winding machine having an improved waste suction and collection system and to a control method for the winding machine. Background Technology

[0002] As is well known, automatic winding machines generate a large amount of yarn strands, dust, and waste, which must be properly sucked out and discharged. For this purpose, specific suction devices (usually centrifugal fans) are used to remove waste from the relevant usage facilities, and the waste is then transported to specific collection boxes before subsequent manual or centralized waste removal to avoid unwanted blockages / yarn buildup, thereby ensuring the proper operation of the machine.

[0003] This invention relates to a winding machine with an improved waste inhalation and collection system and a control method thereof. By way of non-limiting example, this invention relates to a yarn inhalation and collection system for a spool preparer, which is a preparatory station for processing spools of yarn directly from the spinning machine or from a separate loading system (body).

[0004] The main purpose of the pre-work unit is to prepare the spools for the subsequent winding stage. This pre-work unit is equipped with a dedicated suction system designed to intercept the end of each spool using suction nozzles and insert the end into a tube so that the winding unit can grasp the end during the unwinding stage. The spools are conveyed on a specific plate by a conveyor belt to an end suction nozzle, which is connected via a pipe to the dedicated suction unit that generates the required vacuum.

[0005] For obvious reasons, due to the need to suck and collect waste generated from picking up thread ends from the spool side and waste generated from corresponding cutting by the scissors on the suction nozzle, the known method is to use a strand collection box equipped with a filter to separate the strands from the airflow and prevent them from reaching the fan inlet. Typically, the box is emptied periodically depending on the number of spools and the type of yarn. Furthermore, the emptying of the box is performed by an operator or a centralized vacuum system, where the operator manually removes the strands by opening the filter box door (and thus, for obvious reasons of safety and accessibility, stops the vacuum device), while the centralized vacuum system pneumatically transports the strands to the filter housed in the machine head via a specific suction pipe. In the case of only one yarn collection box for the system, a disadvantage is the inevitable reduction in the productivity of the thread end searching station due to the need to temporarily interrupt this thread end suction.

[0006] In the case of manual evacuation, this temporary interruption of intake is necessary to eliminate the low pressure present in the chamber and allow the operator to safely open the door and clear the strands.

[0007] In the case of automatic evacuation, this interruption is used to seal the box, thereby allowing the box to be exclusively connected to the low pressure generated by the centralized vacuum device, so that the strands can be discharged.

[0008] In addition, each filter is typically placed where other usage facilities operate, which may be fixed (e.g., plate conveyor cleaning nozzles) or variable (e.g., spool cleaners), and these usage facilities must operate independently of the operating status of the spool search nozzles. Summary of the Invention

[0009] Therefore, it is necessary to address the shortcomings and limitations mentioned in existing technologies.

[0010] The winding machine and winding machine control method of the present invention meet this need. The winding machine includes: a vacuum generating device for generating an airflow containing winding waste, such as strands of wire or dust; a suction nozzle for the winding waste, connected to a sleeve having at least a first outlet; a first waste discharge pipe for the winding waste; a first filter device having a first waste collection box and connected to the vacuum generating device via a first waste suction pipe, the first waste suction pipe being operable by a first waste suction valve; the first filter device being connected to the first outlet of the sleeve via a first waste feed pipe, the first waste feed pipe being provided with a first waste feed valve; and the first filter device being provided with a first outlet nozzle connected to the first waste collection box and the first waste discharge pipe. The first waste discharge valve can be used to shut off the flow. The sleeve of the suction nozzle is provided with a second outlet different from the first outlet. The winding machine includes a second filter device with a second waste collection box connected to the vacuum generating device via a second waste suction pipe, which can be shut off by a second waste suction valve. The second filter device is connected to the second outlet of the sleeve via a second waste feed pipe, which is provided with a second waste feed valve. The second filter device has a second outlet nozzle connected to the second waste collection box and the second waste discharge pipe, which can be shut off by a second waste discharge valve. Attached Figure Description

[0011] Other features and advantages of the invention will become clearer from the following description of preferred and non-limiting embodiments of the invention, as illustrated in the accompanying drawings:

[0012] Figure 1 A perspective view of a winding machine according to an embodiment of the present invention is shown;

[0013] Figure 2 A perspective view of the winding machine waste suction system according to the present invention is shown;

[0014] Figure 3 yes Figure 2 A partial cross-sectional view of the waste suction system in the middle;

[0015] Figure 4 It shows Figure 2 The diagram shows the operation of the waste suction system for the winding machine.

[0016] Elements or parts of elements common to the embodiments described below will be indicated by the same reference numerals. Detailed Implementation

[0017] Referring to the above figures, reference numeral 4 generally indicates a winding machine.

[0018] As described above, the present invention relates to a winding machine and a control method thereof that provides an improved waste inhalation and collection system. By way of non-limiting example, the present invention relates to a yarn inhalation and collection system for a spool preparer, which is a preparatory station for processing spools of yarn directly from the spinning machine or from a separate loading system (body).

[0019] Therefore, the present invention is intended to be a universal strand intake and collection system suitable for use in winding machines.

[0020] Furthermore, it should be noted that the terms thread, single thread, or continuous thread refer to monofilament or continuous filament (e.g., in the case of silk, man-made, or synthetic fibers), while the term yarn refers to a set of raw fibers of varying lengths that are parallel and joined together by twisting. In the following text, one or the other term will be used indiscriminately, and it should be understood that the application of this invention is not limited to one type or the other.

[0021] The winding machine 4 includes a vacuum generating device 8 for generating an airflow containing winding waste (such as strands or dust).

[0022] For example, vacuum generating device 8 is a centrifugal fan, which can be driven by a brushless or asynchronous three-phase motor via an inverter.

[0023] The winding machine 4 also includes a suction nozzle 12 for the winding waste, which is connected via a dedicated pipe to a sleeve 16 having at least a first outlet 20.

[0024] In addition, the winding machine 4 includes a first waste discharge pipe 24 for the winding waste and a first filter device 28 having a first waste collection box 32.

[0025] According to a possible embodiment, the surface of the first filter device is made of a micro-perforated steel plate.

[0026] The first filter device 28 is connected to the vacuum generating device 8 via a first waste suction pipe 36, which can be partially closed by a first waste suction valve 40.

[0027] The first filter device 28 is connected to the first outlet 20 of the sleeve 16 via a first waste feed pipe 44, which is provided with a first waste feed valve 48.

[0028] In addition, the first filter device 28 is provided with a first outlet 52 connected to the first waste collection box 32 and the first waste discharge pipe 24.

[0029] Preferably, the first outlet nozzle 52 can be shut off by the first waste discharge valve 56.

[0030] Preferably, the winding machine 4 includes a control unit 58 operatively connected to the first waste inlet valve 40, the first waste feed valve 48, and the first waste outlet valve 56 to control their operation, as described in more detail below.

[0031] Preferably, the winding machine 4 is provided with at least one first use facility 34 that is fluidly connected to the first filter device 28.

[0032] According to possible embodiments, at least one of the first waste inlet valve 40, the first waste feed valve 48, and the first waste outlet valve 56 is a pneumatically operated regulating gate.

[0033] According to possible embodiments, at least one of the first waste suction valve 40, the first waste feed valve 48, and the first waste discharge valve 56 is provided with a dedicated cutting device (not shown) for performing yarn cutting to prevent unnecessary yarn tangling / accumulation.

[0034] According to a possible embodiment, the sleeve 16 is provided with a second outlet 60, which is different from the first outlet 20.

[0035] According to a possible embodiment, the winding machine 4 includes a second filtering device 68 having a second waste collection box 72 connected to the vacuum generating device 8 by means of a second waste suction pipe 76, which can be shut off by a second waste suction valve 80.

[0036] For example, the surface of the second filter device 68 is made of a micro-perforated steel plate.

[0037] The second filter device 68 is connected to the second outlet 60 of the sleeve 16 via a second waste feed pipe 84, which is equipped with a second waste feed valve 88.

[0038] The second filtration device 68 is provided with a second outlet 92 connected to the second waste collection box 72 and the second waste discharge pipe 64.

[0039] The second outlet nozzle 92 can be shut off by the second waste discharge valve 96.

[0040] The control unit 58 is operatively connected to the second waste inlet valve 80, the second waste feed valve 88, and the second discharge valve 96 to control their operation, as described in more detail below.

[0041] According to a possible embodiment, the winding machine 4 is provided with at least one second use facility 38 that is fluidly connected to the second filter device 68.

[0042] According to a possible embodiment, at least one of the second waste inlet valve 80, the second waste feed valve 88, and the second waste outlet valve 96 is a pneumatically operated regulating gate.

[0043] According to a possible embodiment, at least one of the second waste suction valve 80, the second waste feed valve 88, and the second waste discharge valve 96 is provided with a dedicated cutting device (not shown) for performing yarn cutting to prevent unnecessary yarn tangling / accumulation.

[0044] The function of the winding machine with an improved waste suction and collection system according to the present invention, namely the control method, will now be described.

[0045] Specifically, under normal suction conditions, the suction system of the winding machine 4 sucks up and collects the waste material in one of the first waste collection box 32 and the second waste collection box 72, while the other waste collection box (72, 32) is temporarily not in operation.

[0046] To achieve this state, the first waste feed valve 48 must be opened to activate the suction nozzle 12 and collect the waste.

[0047] In addition, the first waste suction valve 40 must be opened to enable the suction nozzle 12 to operate and / or to enable at least one first use facility 34 connected to the first filter device 28 to operate; finally, the first waste discharge valve 56 must be closed.

[0048] In addition, the second waste feed valve 88 must be closed to avoid interfering with the waste flow into the first waste collection box 32, then the second waste suction valve 80 must be opened to allow the second use facility 38 connected to the second filter device 68 to continue operating, and finally the second waste discharge valve 96 must be closed.

[0049] When the first waste collection box 32 reaches the maximum specified filling level, the following steps must be performed in sequence to seal it.

[0050] Specifically, the first waste material suction valve 40 is closed, the first waste material feed valve 48 is closed, the first waste material discharge valve 56 is opened, and then the waste material is discharged.

[0051] Then close the first waste discharge valve 56 and finally reopen the first waste intake valve 40 to allow the fluid connected to the first use facility 34 of the first filter device 28 to operate.

[0052] At the same time, the waste must be transported to the second waste collection box 72 to ensure the continuous operation of the suction nozzle 12.

[0053] To this end, the second waste feed valve 88 is opened, the second waste suction valve 80 is kept open to continue the operation of the second use facility 38 connected to the second filter device 68, and finally the second waste discharge valve 96 is closed.

[0054] At this point, the first waste collection box 32 that was in operation becomes inactive, and vice versa.

[0055] As can be understood from the description, the present invention can overcome the shortcomings of the prior art.

[0056] Specifically, regardless of the strand removal procedure, the present invention enables continuous suction operation of the thread end search nozzle, which is always guaranteed for the spool.

[0057] This increased the productivity of the lead search station, which in turn increased the productivity of the entire machine.

[0058] Furthermore, with centralized retrieval, the collected strands can be retrieved more frequently, thus reducing the low pressure required to discharge the strands from the box and the speed required to transport the strands to the centralized filter, thereby reducing installation power, total machine energy consumption, and noise generated by the low-pressure generating unit.

[0059] Furthermore, higher service reliability can be achieved in the event of failure of one of the two collection boxes (e.g., due to the failure of one or more heat exchangers).

[0060] Finally, the stress on the vacuum device associated with the stop and start-up phases is reduced.

[0061] Those skilled in the art can make various modifications and changes to the above solution to meet specific requirements and conditions.

[0062] The scope of protection of this invention is defined by the appended claims.

Claims

1. A winding machine (4), comprising: Vacuum generating device (8) is used to generate an airflow containing wound waste; A suction nozzle (12) for the wound waste is connected to a sleeve (16) having at least a first outlet (20). The first waste discharge pipe (24) of the wound waste. The first filtration device (28) has a first waste collection box (32) and is connected to the vacuum generating device (8) via a first waste suction pipe (36), the first waste suction pipe being operable by a first waste suction valve (40). The first filter device (28) is connected to the first outlet (20) of the sleeve (16) by means of a first waste feed pipe (44), the first waste feed pipe being provided with a first waste feed valve (48). The first filter device (28) is provided with a first outlet (52) connected to the first waste collection box (32) and the first waste discharge pipe (24), and the first outlet (52) can be shut off by the first waste discharge valve (56). The suction nozzle (12) has a sleeve (16) with a second outlet (60) different from the first outlet (20). The winding machine (4) includes a second filter (68) with a second waste collection box (72) connected to the vacuum generating device (8) via a second waste suction pipe (76), which can be shut off by a second waste suction valve (80). The second filter device (68) is connected to the second outlet (60) of the sleeve (16) by means of a second waste feed pipe (84), the second waste feed pipe being provided with a second waste feed valve (88). The second filter device (68) is provided with a second outlet (92) connected to the second waste collection box (72) and the second waste discharge pipe (64), and the second outlet (92) can be shut off by the second waste discharge valve (96).

2. The winding machine (4) according to claim 1, wherein, The winding machine (4) includes a control unit (58) operatively connected to the first waste inlet valve (40), the first waste feed valve (48), and the first waste outlet valve (56) to control the operation of the first waste inlet valve, the first waste feed valve, and the first waste outlet valve.

3. The winding machine (4) according to claim 2, wherein, The control unit (58) is operatively connected to the second waste inlet valve (80), the second waste feed valve (88), and the second waste outlet valve (96) to control the operation of the second waste inlet valve, the second waste feed valve, and the second waste outlet valve.

4. The winding machine (4) according to claim 1 or 2, wherein, The winding machine (4) is provided with at least one first use facility (34) fluidly connected to the first filter device (28) and / or at least one second use facility (38) fluidly connected to the second filter device (68).

5. The winding machine (4) according to any one of claims 1 to 3, wherein, At least one of the first waste suction valve (40), the first waste feed valve (48), and the first waste discharge valve (56) is a pneumatically operated regulating gate.

6. The winding machine (4) according to any one of claims 1 to 3, wherein, At least one of the second waste inlet valve (80), the second waste feed valve (88), and the second waste outlet valve (96) is a pneumatically operated regulating gate.

7. The winding machine (4) according to any one of claims 1 to 3, wherein, At least one of the first waste suction valve (40), the first waste feed valve (48), and the first waste discharge valve (56) is provided with a dedicated cutting device for performing yarn cutting to prevent unnecessary yarn tangling / accumulation.

8. The winding machine (4) according to any one of claims 1 to 3, wherein, At least one of the second waste suction valve (80), the second waste feed valve (88), and the second waste discharge valve (96) is provided with a dedicated cutting device for performing yarn cutting to prevent unnecessary yarn tangling / accumulation.

9. The winding machine (4) according to any one of claims 1 to 3, wherein, The surface of the first filter device (28) includes a micro-perforated steel plate.

10. The winding machine (4) according to any one of claims 1 to 3, wherein, The surface of the second filter device (68) includes a micro-perforated steel plate.

11. The winding machine (4) according to any one of claims 1 to 3, wherein, The vacuum generating device (8) is a centrifugal fan driven by a brushless or asynchronous three-phase motor via an inverter.

12. The winding machine according to claim 1, characterized in that, The winding waste material is strands of wire or dust.

13. A control method for a winding machine (4), comprising the following steps: A winding machine (4) is provided according to any one of claims 1 to 12; Under normal suction conditions, suction is performed and waste is collected in one of the first waste collection box (32) and the second waste collection box (72), while the other waste collection box is temporarily not in operation.

14. The control method for the winding machine (4) according to claim 13, comprising the following steps: Open the first waste feed valve (48) to allow the suction nozzle to operate and collect waste; Open the first waste suction valve (40) to enable the suction nozzle (12) to operate and / or enable at least one first use facility (34) connected to the first filter device (28) to operate; Close the first waste discharge valve (56).

15. The control method for the winding machine (4) according to claim 14, comprising the following steps: Close the second waste feed valve (88) to avoid interfering with the waste flow into the first waste collection box (32); Open the second waste suction valve (80) to continue operation of the second use facility (38) that is fluidly connected to the second filter device (68); Close the second waste discharge valve (96).

16. The control method for the winding machine (4) according to any one of claims 13 to 15, wherein, When the first waste collection bin (32) reaches the maximum specified filling level, the following steps are performed: Close the first waste suction valve (40); Close the first waste feed valve (48); Open the first waste discharge valve (56) and discharge the waste; Close the first waste discharge valve (56); Reopen the first waste suction valve (40) to allow the first use facility (34) of the fluid connected to the first filter device (28) to operate.

17. The control method for the winding machine (4) according to any one of claims 13 to 15, comprising the following steps: Open the second waste feed valve (88); Keep the second waste suction valve (80) open; Close the second waste discharge valve (96).

Images