JP6273421B2 - Exercise device for drafting cylinder of spinning machine - Google Patents

Description

  The present invention relates to a spinning machine for obtaining a yarn reel from a reel of roving yarn. In particular, the present invention relates to a transmission device for moving a drafting cylinder of a spinning machine.

  As is known, a spinning machine can process a reel of roving yarn and make a reel of yarn after drafting and twisting the roving yarn.

  For this purpose, the spinning machine is constituted by an inlet extending along the long axis, from which a reel of roving yarn is suspended.

  A drafting device generally formed of three pairs of cylinders having longitudinal extensions is arranged downstream of the reel of roving yarn, and the drafting yarn passes between them.

  Spindles are wound on the stretched and twisted yarns, placed on the base in a line along the longitudinal axis downstream of the drafting device, and rotate about their own vertical axis.

  Usually, the spinning machine has two opposing banks, each bank having a row of spindles. In order to increase the productivity of the spinning line and limit the surface area occupied by the machinery, it is appropriate to provide a spinning machine with a large number of spindles. Currently, some spinning machines have many spindles up to 2000 to a length of 70-80 meters.

  As a result, the drafting device cylinder has a significant length, which allows the yarn to be fed to the rows of spindles.

  The drafting device cylinder is moved by an electric motor, and the transmission device handles the transfer of movement from the electric motor to the cylinder.

  Several embodiments of such a spinning machine are shown, for example, in the Italian patent application of the invention BS2011A000019 in the name of the applicant.

Italian patent application BS2011A000019

  There is a particular need to use a transmission device that allows sudden changes in the rotational speed of the cylinder, for the purpose of imagining sudden changes in the speed of the cylinder, such as applying a light twist. .

  An object of the present invention is to make a spinning machine with a transmission device that allows a sudden change in the rotational speed of a cylinder.

  Such an object is achieved by a spinning machine according to claim 1 below.

  The features and advantages of the spinning machine according to the present invention will become apparent from the following description, given by way of non-limiting example and with reference to the accompanying drawings.

FIG. 1 a shows a diagram of a spinning machine with a system for moving a drafting cylinder according to the invention according to one embodiment. FIG. 1b shows a view of a spinning machine with a system for moving a drafting cylinder according to the invention according to one embodiment. FIG. 1c shows a view of a spinning machine with a system for moving a drafting cylinder according to the invention according to one embodiment. FIG. 2 shows a diagram of a transmission device for the movement of the second and third drafting cylinders. FIG. 3 shows an overall view of the transmission device. FIG. 4 shows a diagram of a part of the transmission device from the first observation point. FIG. 5 shows a diagram of a part of the transmission device of FIG. 4 from a further observation point. FIG. 6 shows a schematic cross section of two speed reducers of a transmission device according to an embodiment of the present invention. FIG. 7a shows a diagram of a transmission device for the movement of second and third drafting cylinders according to the invention according to a further embodiment. Fig. 7b shows a diagram of a transmission device for the movement of the second and third drafting cylinders according to the invention according to a further embodiment. FIG. 8a shows a diagram of a transmission device for the movement of second and third drafting cylinders according to the invention according to a further embodiment. Figure 8b shows a diagram of a transmission device for the movement of the second and third drafting cylinders according to the invention according to a further embodiment.

  The spinning machine according to the invention extends mainly along the longitudinal axis X and comprises a support portal for hanging a reel of roving yarn to be processed.

  In addition, the spinning machine is equipped with a drafting device 100 of roving yarn, which consists of a pair of cylinders, arranged longitudinally and suitable for rotating around its own axis. The roving passes between successive pairs of cylinders and is subjected to drafting caused by the different rotational speeds of the two pairs of cylinders.

  Preferably, in a pair of cylinders, the lower or drafting cylinder is motor driven while the upper or pressure cylinder is idle and rotates by being dragged by pressure contact with the lower drafting cylinder.

  In particular, according to a preferred embodiment of the invention, each side of the spinning machine comprises:

  • First pair of cylinders. It comprises a first drafting cylinder 1 and an associated first pressure cylinder, just upstream of the spindle. The first drafting cylinder can be rotated by command around a first axis of rotation Z1.

• A second pair of cylinders. It comprises a second drafting cylinder 2 and an associated second pressure cylinder, just upstream of the spindle. The second draft cylinder is rotatable command about a second rotation axis Z 2.

• A third pair of cylinders. It comprises a third drafting cylinder 3 and an associated third pressure cylinder, just upstream of the spindle. The third drafting cylinder is rotatable in the command about the third rotation axis Z 3.

  It should be borne in mind that the spinning machine consists of two sides and comprises two first cylinders 1, two second cylinders 2 and two third cylinders 3.

  The spinning machine further comprises an exercise device suitable for placing the drafting cylinders in command rotation about their respective axes of rotation.

  According to one embodiment, the spinning machine 100 comprises an exercise device at the head, an exercise device at the tail, and an intermediate exercise device, for example in the case of a large number of spindles exceeding approximately 1200 (FIG. 1a). .

  According to a further embodiment, the spinning machine 100 comprises an exercise device at the head and an exercise device at the tail, for example in the case of a small number of spindles of approximately 1200 or less (FIG. 1b).

  According to a still further embodiment, the spinning machine 100 comprises an exercise device that is only at the tail, for example in the case of very few spindles of 600 or less (FIG. 1c).

  The movement system comprises a first cylinder motor 10 or electric motor for movement of the first drafting cylinder 1. In particular, the motor 10 of the first cylinder is kinematically connected to both the first drafting cylinders on the two sides of the spinning machine.

  Preferably, the motor 10 of the first cylinder is located at one longitudinal end of the first drafting cylinder and is placed beside the longitudinal direction of the drafting cylinder and beyond the axial extension of the drafting cylinder. Yes.

  Preferably, furthermore, the motor 10 of the first cylinder comprises a PTO having a PTO axis E1, which is in an intermediate position between the rotation axes Z1 of the first drafting cylinder, for example parallel thereto. It is arranged in the horizontal direction.

  According to one embodiment, the exercise device imagines a single motor 10 of the first cylinder for movement of the first cylinder 1, said first cylinder being the two longitudinal ends of the spinning machine. It extends continuously without interruption along the respective rotation axis Z1 (FIG. 1b).

  According to a further embodiment, the exercise device imagines a further motor 10 ′ of the first cylinder located at the end opposite the longitudinal direction of the end where the previous motor 10 of the first cylinder is located. (FIG. 1a).

  The exercise device further comprises a first motor 20 of second and third cylinders for moving the second and third drafting cylinders 2, 3. In particular, the motors 20 of the second and third cylinders move into the second drafting cylinder 2 on both sides of the spinning machine and to the third drafting cylinder 3 on both sides of the spinning machine. Connected scientifically.

  Preferably, the first motor 20 of the second and third cylinders is located at one longitudinal end of the second and third drafting cylinders and is placed beside the drafting cylinder in the longitudinal direction, Beyond the axial extension of the cylinder.

  Preferably, further, the first motor 20 of the second and third cylinders comprises a PTO having a PTO axis E2, and the second Z3 and the rotation axis Z2 of the third drafting cylinder. At an intermediate position between them, for example, they are arranged laterally in parallel with them.

  According to one embodiment, the exercise device is conceived of a single motor 20 of a third cylinder that is arranged laterally in the longitudinal direction of the second and drafting cylinders and is arranged beyond these longitudinal ends. To do.

  Furthermore, the exercise device comprises further motors 30 of the second and third cylinders for moving the second and third drafting cylinders, arranged in a longitudinal intermediate position with respect to the longitudinal ends of the drafting cylinders. (FIG. 1a) or disposed at one end thereof (FIG. 1b).

  Preferably, the exercise device comprises a transmission device for transmission of rotational movement from the motors 20, 30 of the second and third cylinders to the second and third drafting cylinders 2, 3.

  Furthermore, the exercise device comprises a support structure 40 for the support of the motors 20, 30 of the second and third cylinders and the related transmission device.

  Preferably, the support structure 40 comprises a first plate 42 and a second plate 44 that are opposed and spaced apart longitudinally, creating a gap 46 therebetween. Yes.

  Preferably, the first plate 42 has an opening 48.

  The transmission device is moved by the planetary gear reducer 50a which is moved by the motors 20 and 30 of the second and third cylinders, and is moved by the planetary gear reducer 50a and this time in the second and third cylinders 2 and 3. An additional reduction gear 50b connected is provided.

  According to a preferred embodiment, the additional speed reducer 50b, for example supported by the second plate 44, includes a PTO input connected to the output of the planetary gear speed reducer 50a and two PTO outputs with parallel axes. 52, 54.

  Further, according to one embodiment, the motors 20, 30 of the second and third cylinders are adapted to the planetary gear reducer through the opening 48 and through the first plate 42.

  The transmission device further comprises at least one detour wheel 64 and one jockey wheel 62, a common shaft 70 and a main belt 79 for each PTO output 52, 54, ie for each side of the spinning machine. Yes. The main belt 79 is engaged with the PTO outputs 52 and 54 and the common shaft 70, rotates it, and follows a closed path defined by contact between the detour wheel 64 and the jockey wheel 62.

  According to a preferred embodiment, the jockey wheel 62 is mounted on the vibration adjustment plate 65 and its angular position can be adjusted so that the main belt 79 is tight.

  Preferably, the shared shaft 70 is supported by the first plate 42 and the second plate 44 and thus traverses the gap 46 between the plates and preferably also faces the drafting cylinder. Protrudes from the first plate 42 to the side.

  Further, the transmission device includes a detour wheel 80, preferably a jockey wheel 82, a third cylinder shaft 84, and a third cylinder belt 86 disposed in the gap 46.

  The third cylinder belt 86 is engaged with the common shaft 70 and the third cylinder shaft 84 in the gap area, and follows a closed path defined by contact between the detour wheel 80 and the jockey wheel 82.

  Preferably, further, the detour wheel 80 and the jockey wheel 82 are supported by a single plate 85 and are attached to one of the frame plates 42, 44 in a vibrating manner and operate simultaneously with the two wheels. An adjustable angular position for tensioning the third cylinder belt 86 is taken.

  The third cylinder shaft 84 is supported for rotation by one or both of the plates 42, 44 and protrudes from one or the other or both and is connected to the third drafting cylinder 3 by a mechanical joint. To do.

  Furthermore, the transmission device comprises a detour wheel 90, preferably a jockey wheel 92, a second cylinder shaft 94, and a second cylinder belt 96 supported by one of the plates 42,44.

  The second cylinder belt 96 is engaged with the common shaft 70 and the second cylinder shaft 94 and follows a closed path defined by the contact between the detour wheel 90 and the jockey wheel 92.

  The second cylinder shaft 94 is supported for rotation by one or both of the plates 42, 44 and protrudes from one or the other or both and is connected to the second drafting cylinder 2 by a mechanical coupling. To do.

  Preferably, further, the detour wheel 90 and the jockey wheel 92 are supported by a single plate 85 and are attached to one of the frame plates 42, 44 in a vibrating manner and operate simultaneously with the two wheels. Take the adjustable angular position to tighten the second cylinder belt 96.

  Each drafting cylinder 2, 3 is moved by a dedicated belt. In other words, the second cylinder belt 96 is engaged with the second cylinder 2, is not engaged with the third cylinder 3, and the third cylinder belt 86 is engaged with the third cylinder 3. The second cylinder 2 is not engaged.

  Innovatively, the spinning machine according to the invention makes it possible to carry out processes that require a sudden change in the rotational speed of the drafting cylinder, such as lightly twisting without difficulty.

  In particular, the planetary gear reducer has a very compact structure, and at the same time, due to the components mounted downstream of the planetary gear reducer itself, the inertia encountered by the electric motor is greatly reduced.

  Advantageously, this spinning machine also makes it possible to make a very fast belt change in that each drafting cylinder has its own dedicated belt.

  According to a further advantageous aspect, the spinning machine has the wheels and pulleys attached to their own spiders in the same way as the shafts, which are detachably attached to the support structure 40, This makes it possible to perform very fast inspection and repair work.

  The wheel and its spider or group formed with the shaft and its spider can be withdrawn from the support structure and replaced with a similar new group, thereby making the inspection and repair work particularly quick and efficient.

  According to one embodiment variation (FIG. 7a), the exercise device comprises a single motor 20 for moving the second and third cylinders and an auxiliary device 200 connected to the motor 20 for doubling the movement. And two planetary gear reducers 50a ', 50a ", which are moved by the auxiliary device 200 and are offset from the common shaft 70, one on each side of the spinning machine.

  For example, the auxiliary device 200 includes a pulley 202 moved by the motor 20 and two auxiliary belts 204 ′, 204 ″ for movement of the respective planetary gear reducers 50 a ′, 50 a ″ engaged by the pulley 202. It has.

  According to a further embodiment variant (FIG. 7b), the two planetary gear reducers 50a ', 50a "are moved by the auxiliary device 200 and are coaxial with the common shaft 70, one on each side of the spinning machine.

  According to a still further embodiment (FIG. 8a), the spinning machine according to the invention comprises two second and third cylinder motors 120a, 120b, each dedicated to a drafting cylinder on one side of the spinning machine. It is.

  Preferably, according to such an embodiment variation, the spinning machine has one planetary gear reducer 50a for each of the second and third cylinder motors 120a, 120b.

  Preferably, the two planetary gear speed reducers 50a, 50a are offset from the respective common shaft 70.

According to a further embodiment (Fig. 8b), the two planetary gear reducers 50a, 50a are coaxial with the respective shared shaft 70.

It will be apparent to those skilled in the art that modifications can be made to the spinning machine described above to meet possible requirements while remaining within the scope of protection of the following claims.

Hereinafter, the invention described in the scope of claims of the present application will be appended.
[1] Spinning line spinning machine, on each side
A first drafting cylinder (1) that rotates in command around each first axis of rotation (Z1);
A second drafting cylinder (2) that rotates in command around each second axis of rotation (Z2);
A third drafting cylinder (3) that rotates in command around each third axis of rotation (Z3);
A first motor (10) of said first cylinder for moving them kinematically connected to said first cylinder (1);
The motors of the second and third cylinders, which are moved kinematically connected to the second drafting cylinder (2) and the third drafting cylinder (3) by means of a transmission device (20) ( 20, 30),
The transmission device comprises at least one speed reducer (50a, 50b) connected to the motors (20, 30) of the second and third cylinders, and is downstream of the speed reducer (50a, 50b). A spinning machine in which movement of the shaft (70, 84, 94) is transmitted by a belt.
[2] The spinning machine according to [1], wherein the speed reducer (50a) is a planetary gear speed reducer.
[3] The spinning machine according to [2], wherein the transmission device includes an additional reducer (50b) connected to the planetary gear reducer to be moved.
[4] The additional reduction gear (50b) includes a power take-out input connected to the motor (20, 30) and two power take-out outputs (52 for doubling the motion toward the two sides of the spinning machine. , 54). The spinning machine according to [3].
[5] The transmission device includes:
A main belt (79) and a main shaft (70) are provided, and the main belt engages with a power takeout output (52, 54) of the speed reducer (50a, 50b) and the main shaft (70). And also
A third cylinder belt (86) and a third cylinder shaft (84) connected to the third cylinder (3) are provided, and the third cylinder belt (86) is the main shaft. Spinning machine according to any of the preceding claims, which is engaged with (70) and the third cylinder shaft (84).
[6] The transmission device includes:
A second cylinder belt (96) and a second cylinder shaft (94) connected to the second cylinder (2) are provided, and the second cylinder belt (96) is connected to the main shaft (96). 70) and the spinning machine according to [5], which is engaged with the second cylinder shaft (94).
[7] Spinning according to any of the preceding claims, comprising a support structure (40) for the motors of the second and third cylinders (20, 30) and for supporting the transmission device. Machine.
[8] The spinning machine according to [7], wherein the support structure includes a first plate (42) and a second plate (44), and there is a gap (46) between them.
[9] A detour wheel (64, 80, 90) and a jockey wheel (62, 82, 92) that engage with the belt (79, 86, 96) and define the path thereof are provided. [7] Or the spinning machine as described in [8].
[10] The spinning machine according to [9], wherein the bypass wheel is inside the path of the belt, and the jockey wheel is outside the path.
[11] The bypass wheel (80, 90) and the jockey wheel (86, 96) are supported by a single vibration plate (85, 95), and their angular position is adjusted to tension the belt. The spinning machine according to [10], wherein
[12] The spinning machine according to any of the preceding claims, wherein each of the second and third drafting cylinders (2, 3) is moved by a dedicated belt.
[13] The transmission device is engaged with the third cylinder (3) and is not engaged with the second cylinder (2). The spinning machine according to [12], further comprising a second cylinder belt (96) that is engaged with the cylinder (3) but not engaged with the third cylinder (3).
[14] The spinning according to any of the preceding claims, wherein the wheel and / or the shaft is supported by a respective spider, and the spider is supported by the support structure in a detachable manner. Machine.
[15] The spinning machine according to any one of the preceding claims, wherein a planetary gear speed reducer is provided on each side of the spinning machine, and the speed reducer is coaxial with each shared shaft.
[16] The spinning machine according to any one of [1] to [14], wherein a planetary gear speed reducer is provided on each side of the spinning machine, and the speed reducer is offset from each shared shaft.

1, 2, 3 ... drafting cylinder, 10, 10 ', 20, 30 ... motor, 40 ... support structure, 42, 44 ... plate, 46 ... gap, 48 ... opening, 50a, 50a', 50b ... speed reducer 52, 54 ... PTO output, 62 ... Jockey wheel, 64 ... Detour wheel, 65 ... Vibration adjustment plate, 70 ... Common shaft, 79 ... Main belt, 80 ... Detour wheel, 82 ... Jockey wheel, 84 ... Cylinder shaft, 85 Single plate, 86 ... Cylinder belt, 90 ... Detour wheel, 92 ... Jockey wheel, 94 ... Cylinder shaft, 96 ... Cylinder belt, 100 ... Spinning machine, 120a, 120b ... Cylinder motor, 200 ... Auxiliary device, 202 ... Pulley 204, 204 '... auxiliary belt, E1, E2 ... PTO shaft, Z1, Z2 Axis of rotation.

Claims (16)

Spinning line spinning machine, on each side,
A first drafting cylinder (1) that rotates in command around each first axis of rotation (Z1);
A second drafting cylinder (2) that rotates in command around each second axis of rotation (Z2);
A third drafting cylinder (3) that rotates in command around each third axis of rotation (Z3);
A first motor (10) of a first cylinder for moving them kinematically connected to said first drafting cylinder (1);
The motors of the second and third cylinders, which are moved kinematically connected to the second drafting cylinder (2) and the third drafting cylinder (3) by means of a transmission device (20) ( 20, 30),
The transmission device, the second and third cylinder motor (20, 30) connected to the at least one reduction gear (50a, 50b) comprises a cylinder of the speed reducer (50a, 50b) A spinning machine in which the transmission of motion between the downstream shafts (70, 84, 94) without intervening is performed by a belt.   The spinning machine according to claim 1, wherein the speed reducer (50a) is a planetary gear speed reducer.   3. Spinning machine according to claim 2, wherein the transmission device comprises an additional speed reducer (50b) connected to the planetary gear speed reducer to be moved.   The additional reducer (50b) has a power take-off input connected to the motor (20, 30) and two power take-out outputs (52, 54) for doubling the movement towards the two sides of the spinning machine. The spinning machine according to claim 3, comprising: The transmission device is
A main belt (79) and a main shaft (70) are provided, and the main belt engages with a power takeout output (52, 54) of the speed reducer (50a, 50b) and the main shaft (70). And also
A third cylinder belt (86) and a third cylinder shaft (84) connected to the third cylinder (3) are provided, and the third cylinder belt (86) is the main shaft. The spinning machine according to any one of claims 2 to 4, wherein the spinning machine is engaged with (70) and the third cylinder shaft (84). The transmission device is
A second cylinder belt (96) and a second cylinder shaft (94) connected to the second cylinder (2) are provided, and the second cylinder belt (96) is connected to the main shaft (96). 70) and the second cylinder shaft (94) according to claim 5.   The spinning machine according to any one of claims 2 to 6, further comprising a support structure (40) for supporting the motors of the second and third cylinders (20, 30) and for the transmission device. .   The spinning machine according to claim 7, wherein the support structure comprises a first plate (42) and a second plate (44), with a gap (46) therebetween.   9. A detour wheel (64, 80, 90) and a jockey wheel (62, 82, 92) engaged with the belt (79, 86, 96) to define their path and a jockey wheel (62, 82, 92) according to claim 7 or 8. The spinning machine described.   The spinning machine according to claim 9, wherein the bypass wheel is inside the path of the belt, and the jockey wheel is outside the path.   The bypass wheel (80, 90) and the jockey wheel (86, 96) are supported by a single vibrating plate (85, 95), the angular position of which can be adjusted to tension the belt. The spinning machine according to claim 10, wherein the spinning machine is capable.   12. A spinning machine according to any of claims 2 to 11, wherein each of the second and third drafting cylinders (2, 3) is moved by a dedicated belt.   The transmission device is engaged with the third cylinder (3) and is not engaged with the second cylinder (2). The third cylinder belt (86) and the second cylinder ( 13. A spinning machine according to claim 12, comprising a second cylinder belt (96) engaged with 3) but not engaged with said third cylinder (3).   The spinning machine according to any one of claims 9 to 13, wherein the wheel and / or the shaft is supported by a respective spider, and the spider is supported by a support structure in a detachable manner.   The spinning machine according to any one of claims 1 to 14, wherein a planetary gear speed reducer is provided on each side of the spinning machine, and the speed reducer is coaxial with each shared shaft.   The spinning machine according to any one of claims 1 to 14, wherein a planetary gear speed reducer is provided on each side of the spinning machine, and the speed reducer is offset from each shared shaft.

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