wire feeding device

Abstract

A thread feeding device for feeding thread to a textile machine, provided with a support unit, a thread feeding wheel, at least one thread guide device and at least one thread sensing lever designed as an exit sensor. The delivery sensor is rotatably mounted on the support unit and is designed to pivot from an operating position, in which the exit sensor is held by the thread, to a switching position. The thread feeding device comprises a spring element designed as a stop element and a locking unit. The spring element is designed to form the locking unit with a locking element of the exit sensor. The locking element is arranged in the mounting area of the exit sensor. The spring element is fixed at one end to the support unit. In operation, i.e. in the operating position or in the switching position, the other end of the spring element is arranged in front of the locking element. The spring element is designed to elastically deform by the locking element when the exit sensor is moved by hand into a locking position and to slide behind the locking element, which locking position is arranged near the operating position or near the switching position.

Description

Technical Field

[0001] This invention relates to a thread feeding device for feeding thread onto a textile machine. Background Technology

[0002] DE 101 13 184 B4 discloses a yarn feeding device, particularly for a knitting machine, comprising a support unit called a housing, a yarn feeding wheel, at least one yarn guiding element, and at least one yarn sensing rod, also referred to as a yarn sensing device. The yarn sensing rod is pivotally mounted on the housing and designed to pivot from an operating position to a switching position. Movement of the yarn sensing rod in or near the operating position is limited by a spring element called a stop. The yarn sensing rod can be manually raised beyond the operating position. A manually operated sensor lock may also be provided. This sensor lock may consist of a slider.

[0003] Before using the slider to activate the sensor lock, you must lift and hold the line sensor lever to activate the sensor lock.

[0004] A sensor lock that can be manually operated is known from DE 199 32 481 C1 and DE 199 32 481 A1. Summary of the Invention

[0005] The purpose of this invention is to develop a wire feeding device whose wire sensing rod can be easily moved into the locking position by hand.

[0006] This objective is achieved by a thread feeding device for feeding thread into a textile machine, the device comprising a support unit, a thread feeding wheel, at least one thread guide designed to guide the thread fed by the thread feeding wheel, and a thread sensing rod having at least one thread sensing rod designed as an exit sensor, the thread sensing rod being rotatably mounted on the support unit and designed to pivot from an operating position to a switching position, in which the exit sensor is held by the thread and has a spring element and a locking unit, the spring element being designed as a stop element, the spring element and the locking unit being disposed on the support unit, wherein the exit sensor is in or near the operating position or at the switching position. Movement during or near the change position is restricted by a spring element, and the outlet sensor can be locked by a locking unit, characterized in that: the spring element is designed to form a locking unit together with a locking element of the outlet sensor, wherein the locking element is arranged in the mounting area of ​​the outlet sensor, and wherein one end of the spring element is fixed to a support unit, and in operation, i.e. in the operating position or the change position, the other end of the spring element is arranged in front of the locking element, wherein the spring element is designed to elastically deform by the locking element and slide behind the locking element when the outlet sensor is manually moved to the locking position, the locking position being located near the operating position or the change position.

[0007] The wire feeding device according to the invention for feeding wire to a textile machine has a support unit, a wire feeding wheel, at least one wire guiding element, and at least one wire sensing rod designed as an outlet sensor.

[0008] Textile machines include, for example, knitting machines, warp knitting machines, looms, or other types of yarn receivers.

[0009] One or more line guiding elements are designed to guide the line from the line feed wheel.

[0010] The exit sensor is rotatable on the support unit, allowing for pivotal mounting. The exit sensor is designed to rotate from an operating position to a switching position; in the operating position, the exit sensor is held by a wire. In the switching position, the exit sensor triggers a switching signal.

[0011] A spring element designed as a stopper is arranged on the support unit, which restricts the movement of the outlet sensor near the operating or switching position.

[0012] The wire feeding device has a locking unit that can be used to lock the outlet sensor. The locking unit is manually operated by moving the outlet sensor.

[0013] According to the present invention, the spring element designed as a stop element is additionally designed to form a locking unit with the locking element of the outlet sensor.

[0014] A locking element is arranged in the mounting area of ​​the outlet sensor. The first end of the spring element is fixed to the support unit. During operation, i.e., in the operating position or the switching position, the second end of the spring element is positioned in front of the locking element.

[0015] When the outlet sensor is manually moved to the locked position next to the operating position or the switching position, the spring element is designed to deform elastically, causing the second end of the spring element to slide behind the locking element.

[0016] The outlet sensor can be brought into the locked position by moving it against the force of the spring element with one hand. It is held in that position by the spring element. No additional manual sensor lock is needed.

[0017] Because of the exit sensor's path, its position in the locked position is clearly visible from the outside. The exit sensor can only be moved to the locked position by hand; it cannot be moved by increasing line tension.

[0018] In one embodiment, the spring element is designed as a spring wire with a first end fixed to the support unit and a second end positioned in front of the locking element during operation (i.e., in the operating position or in the switching position).

[0019] The spring wire, as a spring element, is easily deformed elastically, allowing its free end to move and slide behind the locking element.

[0020] In one embodiment, the spring wire is generally U-shaped, having two legs and a middle section. In the first leg, a first end of the spring wire is secured to a support unit. In the second leg, a second end of the spring wire is positioned on the support unit under pretension. The second end has a contact section that is inclined generally parallel to the middle section, and this contact section is positioned in front of the tip of the locking element during operation.

[0021] In one embodiment, the two leg segments extend generally horizontally during installation. The middle segment has two connecting portions, one of which extends generally vertically from one of the two leg segments, and the other of which extends generally horizontally.

[0022] In one embodiment, the second leg segment is configured to move in the horizontal direction.

[0023] This helps the spring wire slide around the locking element of the outlet sensor.

[0024] In one embodiment, the exit sensor has two legs, one end of which has an inclined section. The inclined section of the leg is mounted on a support unit and connected by a nearly cylindrical plastic body extending along the axis of rotation. The legs of the exit sensor are connected to their opposite ends by a wire guide element in the form of a web. The locking element of the exit sensor is designed as a protrusion, such as a nose or a cam. The locking element is arranged on the plastic body. In an alternative embodiment, the locking element is integrally manufactured with the plastic body.

[0025] In one embodiment, an additional stop element is provided, formed by a line guide element designed as an outlet web, and arranged behind the outlet sensor in the line travel direction. A locking position is provided next to the operating position. The locking element of the outlet sensor is arranged with the outlet web such that when the outlet sensor moves to the locking position, the outlet web is first elastically deformed by the outlet sensor, and then a spring element slides behind the locking element.

[0026] This makes it possible to give the operator a clear tactile indication that the exit sensor is being pressed into the locked position. Attached Figure Description

[0027] The invention will be further explained with reference to embodiments schematically illustrated in the accompanying drawings.

[0028] Figure 1 This is a side view of the wire feeding device according to the present invention;

[0029] Figure 2 yes Figure 1 A side view showing a vertical cross-sectional view of the wire feeding device in the locking element area of ​​the outlet sensor;

[0030] Figure 3a yes Figure 2 A simplified enlarged view of the cross-section, in which the locking element and the spring element designed as a spring wire are in the operating position, with the components of the outlet sensor omitted;

[0031] Figure 3b It corresponds to the one in the middle position. Figure 3a Cross-sectional view;

[0032] Figure 3c It corresponds to being in the locked position. Figure 3a Cross-sectional view;

[0033] Figure 4a yes Figure 3a Enlarged and further simplified cross-sectional views;

[0034] Figure 4b It is an enlarged and simplified bottom view with locking elements and spring wire;

[0035] Figure 4c It is an enlarged and simplified perspective view with locking elements and spring wire; and

[0036] Figure 5a , 5b 5c is the spring wire corresponding to its position in Figure 4a , 4b The view of the position in 4c. Detailed Implementation

[0037] Figure 1 and Figure 2 A thread feeding device 1 for feeding thread F into a textile machine is shown. The thread feeding device 1 has a support unit 2 with a fastening clamp 3. The thread feeding device 1 is provided with a thread feeding wheel 4, which is disposed at the lower end of a shaft 5 extending through the support unit 2 and mounted in the support unit. At least one pulley 6 (two pulleys 6 in this example) and a clutch with an operating unit 7 are arranged on the shaft 5.

[0038] On the path of the line F in front of the wire feed wheel 4, the support unit 2 is equipped with a wire inlet hole 8, a knot catcher 9, a wire brake 10, and a wire inlet sensor 11.

[0039] The support unit 2 includes a support arm 12 and a housing having a first housing portion 13 and a second housing portion 14.

[0040] On the path of the wire F following the feed roller 4, a first wire guide element and a second wire guide element are arranged. The wire guide element is designed to guide the wire F supplied by the feed roller 4. The first wire guide element following the feed roller 4 is referred to below as the take-up element 20, and the second wire guide element is referred to below as the exit element 21.

[0041] The wire feeding device 1 is equipped with an outlet sensor 22, which is mounted on the support unit 2 so that it can rotate about a rotation axis. The outlet sensor 22 is designed to pivot from the operating position to the switching position, in which the outlet sensor 22 is held by the wire F.

[0042] The outlet sensor 22 has two legs 23 and 24, each leg 23 and 24 having an inclined section 23a and 24a at one end, hereinafter referred to as the mounting end. The outlet sensor 22 is mounted on the support unit 2 by means of a mounting web L.

[0043] The legs 23 and 24 of the outlet sensor 22 are connected to each other at their mounting ends via their inclined sections 23a and 24a and an approximately cylindrical plastic body 25 extending along the axis of rotation A. The legs 23 and 24 are connected to each other at their ends opposite the mounting ends via line-guided elements in the form of a web 26. The web 26 is provided with a ceramic layer or ceramic tube.

[0044] The plastic body 25 has a locking element 27. The locking element 27 includes a cylindrical sheath 28, which is formed as a protrusion 29 in a specific circumferential region. The protrusion 29 has a tip at its outer end, the top of which is formed by an inclined upper surface 29a, and the bottom of which is formed by an inclined lower surface 29b that meets the upper surface at a slightly acute angle. The upper surface 29a is flatter and longer than the lower surface 29b relative to the radial direction of the tip of the locking element 27.

[0045] The wire feeding device 1 has a spring element designed as a stop element, which in this example restricts the movement of the locking element 27 and thus restricts the movement of the outlet sensor 22 toward the operating position.

[0046] The spring element is designed as a spring wire 30, with its first end fixed to the support unit 2 and its second end arranged in front of the locking element 27 in the operating position along the moving direction of the locking element 27.

[0047] Figure 3a The arrangement of the spring wire 30 in the operating position relative to the locking element 27 of the outlet sensor 22 is shown. Figure 3b The arrangement of the spring wire 30 relative to the locking element 27 on the path of the exit sensor 22 entering the locked position is shown. Figure 3c The arrangement of the locking positions is shown.

[0048] Figure 4a It shows Figure 3a The enlarged and further simplified cross section. Figure 4b An enlarged, simplified bottom view is shown with locking element 27 and spring wire 30. Figure 4cAn enlarged, simplified perspective view of the locking element 27 and the spring wire 30 is shown.

[0049] Figure 5a , 5b 5c is the spring wire 30 corresponding to its position in Figure 4a , 4b The view of the position in 4c.

[0050] The spring wire 30 is roughly U-shaped and has a first leg section 31, a middle section, and a second leg section 32.

[0051] The first leg segment 31 is fixed to the support unit 2 by the first end of the spring wire 30. The first end of the spring wire 30 (and therefore the first end of the first leg segment 31) is designed to be a retaining section 31a inclined toward the second leg segment 32.

[0052] The second leg segment 32 is arranged such that the second end of the spring wire 30 is in a pre-tensioned state on the support unit 2. The second end of the spring wire 30 (and therefore the second end of the second leg segment 32) is formed as a contact segment 32a, the angle of which is approximately parallel to the middle segment. The retaining segment 31a extends approximately parallel to the contact segment 32a.

[0053] Figure 3a The spring wire 30 and locking element 27 are shown in operation, i.e., in the operational position in this example. During operation, the contact section 32a of the spring wire 30 is arranged in front of the tip of the locking element 27 in the direction of movement of the locking element 27. Specifically, as... Figure 3a As shown, during operation, the contact section 32a of the spring wire 30 is arranged above the upper surface 29a of the protrusion 29 of the locking element 27.

[0054] During installation, the two leg segments 31 and 32 extend approximately horizontally. The second leg segment 32 extends downward at a small angle. It is slightly pre-tensioned by the support unit (particularly the housing portion 14).

[0055] The middle section has two connecting sections 33a and 33b. Starting from the leg section 31, connecting section 33b extends substantially vertically, and then connecting section 33a extends approximately horizontally. Leg section 32 is adjacent to connecting section 33a.

[0056] The first end of the spring element is locked between the mounting web L and the first housing portion 13 of the support unit 2. In this example, the spring wire 30 is guided between the first housing portion 13 and the second housing portion 14, and is locked by its first leg 31. The guide between the first housing portion and the second housing portions 13, 14 forms a small space B, which allows the second leg 32 to move slightly in the horizontal direction. The second leg 32 is supported on the second housing portion 14 under pretension.

[0057] During the movement of the locking element 27 from the operating position to the locked position, the contact section 32a of the spring element, i.e., the spring wire 30, is initially positioned in front of the locking element 27 in the direction of movement. During the movement, the spring wire 30 slides around the locking element 27 and is positioned behind the locking element 27 in the locked position.

[0058] exist Figure 2 , 3a In the arrangements shown in 4a-4c, during operation, i.e. in the operating position, the spring wire 30 is positioned above the locking element 27. The locking element 27 and its protrusion 29 are arranged such that the upper surface 29a is positioned below the contact section 32a of the spring wire 30.

[0059] When the outlet sensor 22 (and therefore the locking element 27) moves manually against the spring force of the spring wire 30, the protrusion 29 presses against the contact section 32a. The spring wire 30 elastically deforms, and the contact section 32a bends upward until the contact section 32a of the spring wire slides behind the locking element 27, that is, past the surface 29a of the protrusion 29 of the locking element 27 and reaches the surface 29b.

[0060] When the outlet sensor 22 (and therefore the locking element 27) is manually moved in the opposite direction, the spring wire 30 elastically deforms again. The contact section 32a of the spring wire 30 is horizontally pressed into the space B by the lower surface 29b of the protrusion 29 and slides back above the locking element 27.

[0061] The locking element 27 of the outlet sensor 22 is arranged relative to the outlet element 21 as follows: when the outlet sensor 22 is manually moved to the locked position, the locking element 27 first undergoes elastic deformation through the outlet sensor 22, and then the spring wire 30 slides behind the locking element 27.

[0062] The operator moving the outlet sensor 22 from the operating position to the locked position first applies a reaction force to the spring element (i.e., spring wire 30) designed as a stop element. A greater reaction force must then be applied to the outlet element 21, which is designed as an additional stop element. As the spring element and spring wire 30 slide around the locking element 27, the outlet sensor 22 retracts slightly.

[0063] Figure Labels

[0064] 1. Wire feeding device

[0065] 2 Support Unit

[0066] 3 Fastening clamps

[0067] 4. Wire feed rollers

[0068] 5-axis

[0069] 6. Belt pulleys

[0070] 7. Control Unit

[0071] 8 cable inlet holes

[0072] 9. Knot Catcher

[0073] 10-wire brake

[0074] 11. Incoming Line Sensor

[0075] 12 support arms

[0076] 13 First shell section

[0077] 14 Second shell section

[0078] 20 incoming line components

[0079] 21 Outgoing components

[0080] 22. Exit Sensor

[0081] 23 legs

[0082] 23a Inclined Section

[0083] 24 legs

[0084] 24a Inclined Section

[0085] 25 Plastic body

[0086] 26. Web

[0087] 27 Locking element

[0088] 28 Cylindrical sheath

[0089] 29. Protrusion

[0090] 29a Upper surface

[0091] 29b Lower surface

[0092] 30 spring wire

[0093] 31 First leg segment

[0094] 31a Maintaining Section

[0095] 32 Second leg segment

[0096] 32a Contact section

[0097] 33a Connecting Section

[0098] 33b Connecting Section

[0099] A. Rotation axis

[0100] F line

[0101] L Installs web plate

[0102] B space

Claims

1. A thread feeding device (1) for feeding thread (F) into a textile machine, comprising a support unit (2), a thread feeding wheel (4), and at least one thread guiding device designed to guide the thread (F) fed by the thread feeding wheel (4), and The device has at least one line sensing rod designed as an outlet sensor (22), which is rotatably mounted on the support unit (2) and designed to pivot from an operating position to a switching position, in which the outlet sensor (22) is held by a line (F). It has a spring element and a locking unit, the spring element being designed as a stop element, and the spring element and locking unit being disposed on the support unit (2). The movement of the outlet sensor (22) in or near the operating position or in or near the switching position is limited by a spring element, and the outlet sensor (22) can be locked by a locking unit. Its features The spring element is designed to form a locking unit together with the locking element (27) of the outlet sensor (22), wherein the locking element (27) is arranged in the mounting area of ​​the outlet sensor (22), and wherein one end of the spring element is fixed to the support unit (2), and in operation, i.e. in the operating position or in the switching position, the other end of the spring element is arranged in front of the locking element (27). The spring element is designed to elastically deform through the locking element (27) and slide behind the locking element (27) when the outlet sensor (22) is manually moved to the locking position, which is located near the operating position or the switching position.

2. The wire feeding device (1) according to claim 1, characterized in that, The spring element is designed as a spring wire (30), the first end of which is fixed to the support unit (2), and the second end of which is arranged in front of the locking element (27) in operation, i.e. in the operating position or in the switching position.

3. The wire feeding device (1) according to claim 2, characterized in that, The spring wire (30) has a U-shaped shape and has a first leg section (31), a middle section and a second leg section (32), wherein the first end of the first leg section (31) is fixed to the support unit (2) and the second end of the second leg section (32) is arranged on the support unit (2) under pretension, wherein the second end has a contact section (32a) which is bent parallel to the middle section and arranged in operation in front of the tip of the locking element (27).

4. The wire feeding device (1) according to claim 3, characterized in that, The first leg segment (31) and the second leg segment (32) extend horizontally during installation, and the middle segment has two connecting sections (33a, 33b), one of which extends vertically from one of the first leg segment (31) and the second leg segment (32), and the other connecting section extends horizontally.

5. The wire feeding device (1) according to claim 4, characterized in that, The second leg segment (32) is configured to move in the horizontal direction.

6. The wire feeding device (1) according to any one of claims 1 to 5, characterized in that, The outlet sensor (22) has two legs (23, 24), one end of which has an inclined section (23a, 24a). The two legs are mounted on the support unit (2) and connected by a cylindrical plastic body (25) extending along the axis of rotation (A). The two legs (23, 24) are connected at their opposite ends by a line guide element in the form of a web (26), and a locking element (27) is formed as a protrusion (29) on the plastic body (25).

7. The wire feeding device (1) according to any one of claims 1 to 5, wherein an additional stop element is provided, said additional stop element being formed of a wire guiding element designed as a wire exit element (21) and disposed downstream of the exit sensor (22) in the wire running direction, characterized in that, The locking position is set next to the operating position (I), and the locking element (27) of the outlet sensor (22) is set relative to the outlet element (21) such that when the outlet sensor (22) moves to the locking position, the outlet element (21) first elastically deforms through the outlet sensor (22), and then the spring element slides behind the locking element (27).

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