JP2006522231A - Clamping device for combing machine - Google Patents

Abstract

The present invention is a clamping device (1) of a combing machine having a reciprocating clamping frame (8), wherein the clamping frame (8) comprises a lower clamping plate (12) and a clamping frame ( 8) having an upper clamping plate (14) supported by side pivot arms (15, 15a), and an upper clamping plate (14) and a lower clamping plate (12). Can form a clamping point in the region of the clamping plate lip (13) and is supported on the bearing receiving part (26) of the clamping frame (8) on the upper side of the lower clamping plate (12). It is related to the type in which the supplied supply cylinder (27) is provided. In the known structure, the proximity for taking out each supply cylinder is not sufficient, and the supply cylinder (27) cannot be taken out without using a special tool. Therefore, according to the present invention, when the supply cylinder (27) is moved laterally with respect to its axis (28) from the operating position to the non-operating position, it exists outside the region (B) that the supply cylinder (27) crosses. Thus, it has been proposed that the swivel arms (15, 15a) on the side of the upper clamping plate (14) are arranged or configured.

Description

  The present invention relates to a clamping device for a combing machine having a clamping frame that can reciprocate, the clamping frame having a lower clamping plate, and a lateral pivot arm at the clamping frame. The upper clamping plate is supported via the upper clamping plate, and the upper clamping plate can form a clamping point in the region of the lower clamping plate and the clamping plate lip. And having a supply cylinder supported on the bearing receiving part of the clamping frame on the upper side of the lower clamping plate.

  DE 4216485 discloses a clamping device for a combing machine of the above type. This clamping device reciprocates via a swivel arm. A combing machine is usually provided with eight clamping devices as described above. From this published document, it can be seen that the upper clamping plate is pivotably supported on the clamping frame via a pivot arm. In this case, a spring leg is attached to each swivel arm via a hinge point, and this spring leg is supported by a driven eccentric body at the other end. The supply cylinder shown in the clamping device is supported laterally on a bearing receiving part in the clamping frame. As long as the supply cylinder has to be removed (for example for cleaning purposes or for passing the cotton web through the clamping device or for replacement after wear), in this arrangement the swivel arm is fitted with the upper clamping plate. In addition, it is necessary to move it to the position where it is swung back. Only in this position can the supply cylinder be taken out without problems. However, special tools are required for this turning process. This is because this turning is performed against the spring force of the spring of the spring leg. Furthermore, the clamping device must be in a forward position (forward dead center position) in order to perform turning. This is not only difficult, but also wastes time if the special tool cannot be found immediately.

  The object of the present invention is to propose a construction of a clamping device which eliminates the above-mentioned drawbacks and has a significantly improved accessibility for taking out the supply cylinder.

  The object of the present invention is to arrange the swivel arm on the side of the clamping plate so that the supply cylinder is outside the area traversed by the supply cylinder when it is moved transversely to its axis from the working position to the non-working position. It was solved by proposing that it was made or constituted. This ensures free access to the supply cylinder in the clamping device. The supply cylinder can be moved from the operating position to the non-operating position without any problem regardless of the position of the clamp. In this case, it is not necessary to bring the upper clamping plate together with its pivot arm to another position via a special tool. In this case, the feed cylinder to be moved is understood to include the bearings of the feed cylinder and other components that must be moved to move the feed cylinder to the non-working position. The concept of “operating position” is a supply cylinder in which the supply cylinder cooperates with the lower clamping plate or the supply tank disposed therein, and the cotton web between them forms a transfer gap that is transferred by the rotation of the supply cylinder. Represents the fixed position of the cylinder.

  The concept of “region” that the supply cylinder crosses when the supply cylinder moves from the operating position to the non-operating position should be understood as a space through which the supply cylinder passes while the supply cylinder moves to the non-operating position. is there. Free access is assured by the fact that the pivoting arm of the upper clamping plate extends below the bearing receiving part of the supply cylinder, as further proposed.

  Thereby, the movement of the supply cylinder is not hindered by the swivel arm, free access to the area of the supply cylinder is obtained, and additionally cleaning in this area is simplified.

  In addition, it has been proposed to place the support point of the swivel arm below the bearing receiving part of the supply cylinder. This results in a simple structural configuration.

  Furthermore, it has been proposed that the internal width between the swivel arms is selected to be at least larger than the length of the supply cylinder in a region where the supply cylinder crosses when the supply cylinder moves to the non-operating position. With this configuration, the position of the upper turning arm of the supply cylinder can be maintained. The entire device can be configured somewhat broadly under this proposal depending on the circumstances.

  It is also advantageous if one pivot leg, each with one spring element, is pivotally mounted on the pivot arm and the other end is supported on a fixed rotation point in the machine frame. In this case, the spring legs are configured so that a clamping force is generated in the region of the clamping plate lip between the upper and lower clamping plates when the clamping device is in the rear position. Thereby, the accessibility to the supply cylinder is optimized, and the upper clamping plate is controlled to give the necessary clamping force in accordance with the position of the swivel arm below the bearing part of the supply cylinder. In this case, the fixed rotation point of each spring leg can be arranged in an advantageous manner below the clamping device.

  Further, the bearing receiving portion of the supply cylinder has an opening upward, and the inner width of the opening is at least a width corresponding to the diameter of the bearing of the supply cylinder inserted into the bearing receiving portion, and the opening is closed. It has been proposed to provide means to do this. This ensures a simple and quick installation or removal of the supply cylinder. This is particularly important when it is necessary to sequentially replace all eight supply cylinders. In the known structure of the prior art, this took a very long time.

  Release of the locking of the supply cylinder is simplified if the means for closing the opening is supported so as to be pivotable about a bearing fixed to the clamping frame.

  In this case, the means can comprise a pivotable two-arm lever. In this case, the first arm can be moved to cover the opening, and the second arm can be swiveled into the working area of the spring element.

  For a simple locking operation of the two-arm lever, the spring element consists of two sleeves, the first sleeve is fixed to the clamping frame, receives the compression spring and is closed on one side It has been proposed that the sleeve of the present invention is guided over the first sleeve in the open region.

  In this case, the second sleeve is provided with a tongue protruding in the radial direction, and the operation is simplified by this tongue.

  Further advantages of the present invention will be described in detail below based on the illustrated embodiments.

  FIG. 1 is a schematic side view of a clamping device of a known structure type.

  FIG. 2 is a schematic side view corresponding to FIG. 1 showing the mounting of the pivoting arm of the upper clamping plate constructed in accordance with the present invention.

  FIG. 3 is a view of FIG. 2 viewed from the X direction.

  FIG. 4 is a diagram showing another embodiment of a clamping device having a pivot arm constructed according to the present invention.

  FIG. 5 is a schematic side view of FIG. 4.

  FIG. 1 shows a clamping device 1 that is pivotably supported via crank arms 2 and 3. In this case, the two crank arms 2 are respectively pivotally supported on the circular comb shaft 5 on the side of the circular comb 4. The other end of the swivel arm 2 is fixed to the clamping frame 8 so as to be rotatable. The rear swivel arm 3 (which can also be two) is supported on the clamping shaft 10 in a relatively non-rotatable manner. An opposite free end of the swivel arm 3 is coupled to a clamping frame 8 via a shaft 9 so as to be capable of rotational movement. The clamping device 1 mainly comprises a lower clamping plate 12 and an upper clamping plate 14 (sometimes referred to as a clamping knife) fixedly coupled to the clamping frame 8. The upper clamping plate 14 is fixed to the two pivot arms 15, 15 '. The swivel arm is attached to the clamping frame 8 via a swivel shaft 16 so as to be swivelable. Each of the swivel arms 15 and 15 ′ is coupled to one spring leg 18, and the spring leg 18 is supported by a driven eccentric body 21 via a shaft 20. A tear cylinder pair 24 is provided behind the clamping device as viewed in the material flow direction. A supply cylinder 27 is rotatably supported in the clamping device 1. The supply cylinder 27 performs a non-continuous rotational movement via a driving device (not shown) and conveys the supplied cotton W for each section. The supply cylinder 27 has a shaft 28, through which the supply cylinder 27 is rotatably supported in both ends via bearings 29, in this case in a bearing receiving part of a clamping frame not shown. Yes. In this arrangement, the upper clamping plate 14 can be swung to the rear position indicated by the alternate long and short dash line through the swivel arms 15 and 15 'in order to replace the supply cylinder 27 as already described at the beginning of the specification. is necessary.

  In order to eliminate this drawback, the configuration shown in FIG. 2 has been proposed, which will be described hereinafter. Unlike the structure of FIG. 1, the pivot arm 15 a of the upper clamping plate 14 extends below the bearing receiving portion 26 of the supply cylinder 27. The turning shaft 16 of the turning arm 15 a is also attached to the lower side of the bearing receiving portion 26. Thereby, there is a sufficient swivel area for the swivel arm 15a to carry out the necessary swivel movement. Furthermore, the upper area of the supply cylinder is completely freely accessible, so that the supply cylinder can be removed without problems and quickly. A spring leg 18a acting on the swivel arm 15a via the shaft 23 is supported on the shaft 34 so as to be pivotable. This shaft 34 is fixed to the machine frame below the breaking cylinder 24. This keeps the space above the supply cylinder completely free. Other (not shown) drive arrangements are possible for the clamping device as long as such a spring leg attachment is made. The clamping device can be driven, for example, from a circular comb shaft. However, this is not important for the claimed configuration.

  One bearing 29 at each end of the supply cylinder is located in a guide 38 that opens upward. The opening 31 of the guide 38 is covered with an arm 33 ″ which is a part of a two-arm lever 33 pivotally supported on the clamping frame 8 via a shaft 30 at the illustrated position. The arm 33 'is substantially perpendicular to the arm "and is loaded by the spring element 40. Thereby, the arm 33 ′ is pressed against the surface of the bearing receiving portion 26 in the region of the opening 31. This ensures that the supply cylinder 27 remains in the incorporated position during operation.

  The spring element 40 consists of a sleeve 41 fixed to the clamping frame 8. On the sleeve 41, another sleeve 42 is guided coaxially. The sleeve 42 includes a tongue piece 46. A spring 44 is guided inside the sleeve 41. The spring 44 is supported at one end by the pin 45 of the sleeve 41 and at the opposite end by the inner surface of the end wall 49 of the sleeve 42.

  On the shaft 28, a lever 47 is fixed so as not to rotate as schematically shown in FIG. The lever 47 is coupled to a driving device (not shown). For example, this drive can be performed via a multi-node link transmission device cooperating with the cam disk, suitably constructed from the main drive shaft. One possible configuration is disclosed, for example, in GB-PS 933946. When the supply cylinder 27 is taken out, the sleeve 42 is moved rearward against the spring force of the spring 44 via the tongue 46 after the drive element 47 shown schematically. As a result, the arm 33 ′ of the lever 33 is released and pivoted clockwise about the shaft 30. As a result, the opening 31 is opened, and the supply cylinder or its bearing 29 can be drawn upward from the guide 38. After the supply cylinder 27 is reinserted into the guide 38 via the bearing 29, the lever 33 is simultaneously pushed back by the sleeve 42 so that the lever 33 comes into contact with the upper surface of the bearing receiving portion 26 in the counterclockwise direction, and consequently the opening 31. Is swung until is closed again. The sleeve 42 is now also moved to the left by the spring force of the spring 44 until the end wall 49 contacts the arm 33 '. Furthermore, if necessary, the spring element 40 can be fixed at this position by means of an additional locking device (not shown) to prevent the lever 33 from automatically disengaging. Locking the supply cylinder in the working position is now complete and the drive element 47 is reconnected, so that the system can resume operation for the combing process. Since the combing process is already known from many published documents, a detailed description thereof is omitted.

  4 and 5 show another embodiment. In this case, unlike the previous embodiment, the swing arms 15d and 15e are arranged on the upper side of the clamping plate 12, and can be swung around a single shaft 16, respectively. As can be seen from FIG. 4, both swivel arms 15d, 15e have an internal width L between them. This inner width L is larger than the length of the supply cylinder 27 including the bearing 29 and the lever 47 pivotally attached to the supply cylinder 27. The lever 47 is shown schematically and serves to drive the supply cylinder. In this case, a free wheel is provided between the supply cylinder and the lever 47, and a discontinuous driving motion is generated by this free wheel. The lever 47 can be part of a multi-link transmission having a roller guided on a cam disk that is non-rotatably coupled to a circular comb shaft, as described in the previous embodiment, for example. . It is also conceivable to provide a drive device having free wheels at both ends of the supply cylinder 27 in order to carry out mixed supply by reciprocating movement of the clamp. Such an arrangement can be found in US-PS 3400431. In this case, the inner legal width L must be selected so that when the supply cylinder moves, the opposing drive elements are also located within the inner legal width L. Of course, other driving possibilities are also possible for the supply cylinder, as disclosed in the known literature. The configuration of the swivel arm 15e can be configured somewhat differently from the configuration of the swivel arm 15d as an example. What is important for moving the supply cylinder 27 is that the swivel arms 15d, 15e prevent the supply cylinder 27 from moving in any state or position of the clamping device 1 without disturbing the movement of the supply cylinder. It can be moved from the operating position. The concept of “moving” includes, on the one hand, moving the supply cylinder 27 to a standby position or a position through which new cotton W is passed, or removing the supply cylinder 27 completely from the clamping device. The standby position described above is indicated by a one-dot chain line in FIG. Of course, when the supply cylinder is moved to the standby position in order to pass the new cotton web W, the drive unit (free wheel) is not dissociated from the supply cylinder, but to the position indicated by the one-dot chain line together with the supply cylinder. Moved. In this embodiment (FIG. 5), the driving force of the clamping device 1 is introduced via a driving rod S pivotally attached to a shaft 9 by a clamping frame 8. In this case, the spring leg 18 is disposed on the upper side of the clamping frame 8. However, it is also conceivable to attach it under the clamping frame as shown and described in FIG. The supply cylinder 27 can be locked via the two-arm arm 33 as in the embodiment of FIG.

1 is a schematic side view of a clamping device of a known structure type. FIG. 2 is a schematic side view corresponding to FIG. 1 showing the attachment of the pivoting arm of the upper clamping plate constructed according to the invention. The figure seen from the X direction of FIG. FIG. 5 shows another embodiment of a clamping device having a swivel arm constructed in accordance with the present invention. FIG. 5 is a schematic side view of FIG. 4.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Clamping device, 2, 3 Crank arm, 4 Circular comb, 5 Circular comb shaft, 8 Clamping frame, 9 shaft, 10 Clamping shaft, 12 Clamping plate, 13 Clamping plate lip, 14 Clamping plate, 15 , 15 'slewing arm, 16 slewing axis, 18 spring axis, 20 axis, 21 eccentric body, 23 axis, 24 fracture cylinder pair, 26 bearing receiving part, 27 supply cylinder, 28 axis, 29 bearing, 30 axis, 31 opening 33 lever, 34 rotation point, 38 guide, 40 spring element, 41 sleeve, 42 sleeve, 44 spring, 45 pin, 46 tongue, 47 drive element, 49 end wall

Claims (11)

  A clamping device (1) of a combing machine having a reciprocating clamping frame (8), wherein the clamping frame (8) is connected to a lower clamping plate (12) and a clamping frame (8). An upper clamping plate (14) supported via a side swivel arm (15, 15a), and the upper clamping plate (14) and the lower clamping plate (12) are clamped. A clamping point can be formed in the region of the ping plate lip (13), and the supply cylinder (27) supported on the bearing receiving part (26) of the clamping frame (8) on the upper side of the lower clamping plate. ) Is provided, the supply cylinder (27) moves laterally with respect to its axis (28) from the operating position to the non-operating position. The lateral pivot arms (15, 15a) of the upper clamping plate (14) are arranged or configured in such a way that the supply cylinder (27) is outside the region (B) that is traversed when A clamping device for a combing machine.   Clamping device according to claim 1, wherein the pivot arm (15a) of the upper clamping plate (14) extends below the bearing receiving part (26) of the supply cylinder (27).   Clamping device according to claim 2, wherein the bearing point (16) of the swivel arm (15a) is arranged below the bearing receiving part (26) of the supply cylinder (27).   The internal width (L) between the swivel arms (15d, 15e) is at least in the region where the supply cylinder (27) passes when the supply cylinder (27) moves to the non-operating position. 27. The clamping device according to claim 1, wherein the clamping device is larger than the length (B) of 27).   One spring leg (18a) having a spring element is pivotally attached to the pivot arm (15a), and the other end of the spring leg (18a) is supported by a rotation point (34) of the machine frame (MG). When the clamping device (1) is in the rear position, a clamping force is generated in the region of the clamping plate lip (13) between the upper clamping plate and the lower clamping plate. The clamping device according to any one of claims 2 to 4, wherein a spring leg (18a) is formed.   Clamping device according to claim 5, wherein the rotation point (34) of each spring leg (18a) is arranged below the clamping device (1).   A bearing cylinder (27) of the supply cylinder (27) has an opening (31) upward, and the inner cylinder of the opening (31) has at least an internal width inserted into the bearing receiving section (26). Clamping device according to any one of the preceding claims, wherein means are provided for closing the opening (31).   Clamping device according to claim 7, wherein the means for closing the opening (31) is mounted so as to be pivotable about an axis fixed to the clamping frame.   The means for closing the opening (31) consists of a pivotable two-arm lever, the first arm is movable to cover the opening (31), and the second arm to the working area of the spring element The clamping device according to claim 8, wherein the clamping device is pivotable.   The spring element consists of two sleeves, the first sleeve is fixed to the clamping frame and receives a compression spring, the closed second sleeve on one side is the first sleeve in the open region The clamping device according to claim 9, wherein the clamping device is guided above.   The clamping device according to claim 10, wherein the second sleeve comprises a radially projecting tongue.

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