CN108350614B

CN108350614B - Roving frame of spinning production line

Info

Publication number: CN108350614B
Application number: CN201680062549.0A
Authority: CN
Inventors: 克里斯蒂安·洛卡泰利; 彼得罗·桑加莱蒂; 达尼埃莱·拉卡格尼
Original assignee: Marzoli SpA
Current assignee: Marzoli SpA
Priority date: 2015-10-26
Filing date: 2016-10-21
Publication date: 2021-11-09
Anticipated expiration: 2036-10-21
Also published as: ITUB20155174A1; ES2682521R1; WO2017072641A1; ES2682521A2; CN108350614A; CH713309B1; ES2682521B1

Abstract

A roving frame (1) has a control head (80) comprising an electric actuator (122) for a main motor (32, 46, 45, 44, 182, 184, 64, 66) contained in a main compartment (120) accessible from the rear of the control head (80). The control head further provides a secondary electrical component (152) contained in the secondary compartment (150) that is accessible from the front of the control head (80). The roving frame is therefore particularly compact and can have other roving frames juxtaposed longitudinally thereof occupying a limited area.

Description

Roving frame of spinning production line

Technical Field

The present invention relates to the field of textile machines for processing fibres, such as fibre tows, into yarns wound on bobbins. In particular, the invention relates to a roving frame for processing a web of fibers, usually coming from a draw frame, and obtaining a roving wound in bobbins destined for spinning machines.

Background

It is known that for spinning lines that are economically viable and that recover very high construction costs within a reasonable time period, it is necessary to ensure a large daily output.

For this reason, the well-accepted trends are: among other things, spinning lines provided with roving frames capable of handling a large number of bobbins are created. This trend has obviously led to an increase in the size of the machines, reflected in the need for larger areas (and therefore greater initial investments).

Therefore, the need to reduce the overall size of the machine, but at the same time increase the number of spools that can be handled simultaneously, is felt deeply in the field.

Disclosure of Invention

The object of the present invention is to make a roving frame that meets the production requirements and overcomes the above-mentioned drawbacks.

This object is achieved by a roving frame according to the invention. Other embodiments of the invention are described herein.

A roving frame of a spinning production line comprises: -a body provided with a plurality of spindles aligned along a longitudinal direction between a head end and a tail end of the body; -a control head applied to said body in correspondence of said head end or tail end, comprising: a) a housing including a lower shell; b) the electric actuator is used for a main motor of the roving frame, and the auxiliary electric component is used for supplying power to a sensor of the roving frame, protecting the main motor and supplying power to an electric wire and a control relay; c) a main case insertable into and removable from the lower case from the front or the rear, the main case defining a main compartment in which the electric actuator or the sub electric component is accommodated, and a sub case insertable into and removable from the lower case from the front or the rear, the sub case defining a sub compartment in which the sub electric component or the electric actuator is accommodated.

Drawings

The characteristics and advantages of the roving frame according to the invention will be apparent from the following description, given by way of non-limiting example, with reference to the accompanying drawings, in which:

figure 1 shows a roving frame according to an embodiment of the invention, seen from the front;

figure 2 shows a front view of the control head of the roving frame of figure 1 in a closed configuration;

figure 3 shows a rear view of the control head of figure 2 in the closed configuration;

figure 4 shows the control head of figure 2 in an open configuration;

figure 5 shows the control head of figure 3 in an open configuration;

figure 6 shows the control head with parts separated; and

fig. 7 shows a roving frame according to the invention, seen from the rear.

Detailed Description

With reference to the accompanying drawings, reference numeral 1 generally indicates a roving frame on a spinning line.

Generally, upstream of the roving frame 1 is a draw frame which produces a spun-up web supplied to the roving frame; the roving frame processes the web and produces a roving that is wound on bobbins suitable for transport to a spinning line downstream of the roving frame for subsequent processing.

The roving frame 1 has a deposition area 2, located at the rear of the machine; in the deposition area, the web from the spinning line is deposited, wound and stored in a tank 4.

Also located in this deposition area 2 is a creel 6 comprising a frame with rollers 8 having a main extension in the longitudinal direction X, generally with a hexagonal cross section and a generally motorized container, arranged above the tank 4.

The web coming out of the tank 4 is placed above the roller 8 and is supplied to the roving frame 1.

The roving frame 1 comprises a body 2 comprising a drawing device 10 consisting of a plurality of pairs of pressure-coupled accumulation cylinders with a circumferential rotation speed increasing from upstream to downstream to gradually draw the web passing between the pairs of cylinders.

In particular, the drawing plant 10 comprises lower electrically powered cylinders, for example four in number, each extending in the longitudinal direction X along the entire roving frame. Each lower cylinder cooperates with a number of separate upper cylinders, usually supported idle in pairs by pressure arms 12.

Preferably, the pressure arm 12 is pneumatically driven to ensure pressure coupling between the lower and upper cylinders.

Downstream of the drawing apparatus 10, the body 2 comprises a platform 20 extending in the longitudinal direction, defining, for the full length of the roving frame, an upper region of the roving frame above and a lower region below.

The platform 20 houses a plurality of necks 22, arranged in two longitudinal rows, longitudinally staggered.

The body 2 further comprises a plurality of flyers 30, placed in a lower region in correspondence of the neck 22, supported by the platform 20. The flyer 30 is adapted to be placed in rotation about a respective vertical axis Z by means of a flyer motor 32, which is normally supported by the platform 20, in its lower part and accessible from behind.

The body 2 further comprises a support 40, placed in the lower region, supporting a plurality of spindles 42, each spindle being placed coaxially to a respective flyer 30. The carriage 40 is vertically movable by a reciprocating motion to form a spool by a first carriage motor 44 accessible from the rear.

In addition, the carriage can be moved horizontally to perform the doffing operation of the spool and load the empty tube by means of a second carriage motor 45 accessible from the rear, usually placed in the lower region of the carriage, close to the tail of the machine.

The spindles 42, aligned in the longitudinal direction X, can also be moved in rotation coaxially with the flyers 30 by means of spindle motors 46, which are placed on the support 40, accessible from behind.

The flyer 30 is also provided with pneumatic forming means adapted to generate a pressurized air flow to keep the web attached to the tube mounted on the respective spindle 42 or to the formed bobbin.

The web coming from the creel 6 passes through the drawing device 10 and then enters the corresponding neck 22, through which the web enters the lower region of the roving frame 22.

Here, it enters the respective flyer 30 through the neck 22 and exits from the lower end; the carriage 40 is moved by a vertical reciprocating motion so that the mesh is wound around a tube mounted on a spindle and forms a spool.

After the bobbins are formed, they are picked up and automatically or manually transported to the spinning machine for subsequent processing.

For this purpose, the carriage 40 can be moved horizontally between a spool formation position, in which the carriage is located in the lower region of the roving frame, and a pick-up position, outside the lower region.

In addition, the body 2 includes a roving frame rail 50 and a pick-up rail 60, which is well supported above the drawing apparatus 10 by the roving frame rail 50.

For example, the roving frame rail 50 comprises a first pair of

posts

52a, 52b located at a first longitudinal end (head of the roving frame), one placed in the rear region of the roving frame and the other in the front region; and comprises a second pair of

columns

52c, 52d located at the other longitudinal end (the tail end of the roving frame), one placed in the rear region of the roving frame and the other in the front region.

The two pairs of columns are connected by

respective cross beams

54a, 54b that support the rails 60.

The track 60 is provided with a plurality of coupling devices 62, termed "pendulums", to couple the pipes (empty pipes or spools).

The coupling device is carried by a belt that allows its translation, the belt being driven by a belt motor 64, which is typically supported by one of the

cross-members

54a, 54 b.

The track 60 is in turn vertically movable by a track motor 66, which is typically located below the platform 20, near the tail of the roving frame, accessible from behind.

After the spool is formed, the carriage 40 is moved horizontally into the pick-up position.

The track 60, initially placed at rest height, is lowered to the pick-up height, wherein the first set of free coupling means 62 engage the respective spools placed on the carriage 40.

Track 60 then returns to the exchange height, where the spool is released from carriage 40; the release device is translated by half and the rail is lowered again so that the second set of coupling devices 62 supporting the empty tubes can be aligned with the spindles of the carriage 40 to wind the empty tubes on the respective spindles. Once the tube has been wound on the spindle, the rail returns to the rest height.

The body 2 further comprises at least one exchange device 70 for picking up spools from the track and replacing them with empty tubes.

The structural and functional characteristics of the switching device are described, for example, in patent application IT 102014902311860 in the name of the applicant, the content of which is incorporated herein by reference.

According to a preferred embodiment, the body comprises a single exchange device 70 supported at a default height from the roving frame rail 50, in particular at the default height of the pair of

columns

52a, 52b at the head of the roving frame, or at the default height of the other pair of

columns

52c, 52d at the tail of the roving frame.

According to another embodiment, the body 2 comprises two exchange devices 70 supported by said two pairs of posts, arranged one at the head and the other at the tail of the roving frame.

The roving frame 1 further comprises a control head 80, which is located longitudinally juxtaposed to the body 2, at its head or tail end.

Preferably, the control head 80 has a housing comprising a base 92 on the foot 94 and a lower shell 96 on the base 92, for example with a quadrangular base.

The lower shell 96 has a front door 98, a rear door 100, and generally fixed

side walls

102, 104. For example, the first side wall 104 is adjacent to the support 40 and the platform 20 of the roving frame 1.

In addition, the housing of the control head 80 includes an upper case 106 located above the lower case 96, and includes a front-openable cover 108 and a rear-openable auxiliary door 110.

The control head 80 includes a main compartment 120, the main compartment 120 being accessible from the rear by opening the rear door 100.

The control head 80 further includes an electrical actuator 122 and associated capacitor 124, which are preferably housed in the main compartment 120.

In particular, the electric actuator 122 is used to actuate the main motors of the roving frame, i.e. the flyer motor 32, the spindle motor 46, the motors for the drawing cylinders, the first carriage motor 44 for vertical translation, the second carriage motor 45 for horizontal translation, the belt motor 64 and the rail motor 66.

According to a preferred embodiment, the control head 80 comprises a main box 90 defining a main compartment 120, preferably with an electric drive 122 and an associated capacitor 124 housed in the main compartment 120; the main cartridge 90 can be inserted into the lower case 96 from the rear or from the front, and taken out therefrom.

The main compartment is accessible through a rear door opening 100 that includes an outer wall 101 facing outwardly, and an inner wall 103 facing the main compartment 120.

The control head 80 has an air cooling system of the main compartment 120, which is preferably integrated in the rear door 100.

In particular, the cooling system comprises: at least one suction fan 126 adapted to suck air from the outside and blow it into the main compartment 120; and at least one blower 128, adapted to draw air from the main compartment 120 and blow it into the external environment, supported by the inner wall 103 of the rear door 100.

Preferably, the suction fan 126 is placed at a lower elevation than the blower 128.

Furthermore, the cooling system preferably comprises a filter 130, for example placed on the outer wall 101 of the rear door 100, to filter the air sucked by the suction fan 126.

The space between the inner wall 103 and the outer wall 101 of the rear door 100 realizes a compensation chamber for distributing the dirt on the filter; the compensation chamber is thick, for example between 100mm and 300mm, preferably between 150mm and 200mm, preferably equal to 180 mm.

While the upper shell 106 encloses the auxiliary compartment 140, the auxiliary compartment 140 is accessible by opening the auxiliary door 110.

The control head 80 further includes a filter bank 142 and a control bank 144, the filter bank 142 and control bank 144 being used in a pneumatic system that services the pressure arm of the draw apparatus 10.

The filter bank 142 and control bank 144 are contained in the auxiliary compartment 140.

The lower shell 96 further includes a sub-compartment 150 that is accessible from the front by opening the front door 98.

The control head 80 further comprises a secondary electrical component 152 for powering the sensors of the roving frame, for protecting the roving frame motors, for powering the power lines, control relays, etc.

The secondary electrical component 152 is preferably housed in a secondary compartment.

According to a preferred embodiment, the control head 80 comprises a secondary box 93 defining a secondary compartment 150, preferably housing the secondary electrical component 152 in the secondary compartment 150; the sub-cartridge 93 can be inserted into the lower case 96 from the front or from the rear, and taken out therefrom.

In other words, the control head 80 includes a main case 90 defining a main compartment 120 that is insertable into and removable from the lower case 96 from the front or rear, accommodates the electric actuator 122 and the associated capacitor 124 or the sub-electric component 152 therein, and includes a sub-case 93 defining a sub-compartment 150 that is insertable into and removable from the lower case 96 from the front or rear, and accommodates the sub-electric component 152 or the electric actuator 122 and the associated capacitor 124 therein.

In addition, the control head 80 comprises a monitor for local control of the roving frame; the monitor 160 is supported by the front door 98.

Finally, the upper shell 106 encloses an operating compartment 170 that is accessible by lifting the lid 108.

The control head 80 comprises drawing

motors

182, 184 for actuating the drawing cylinders of the drawing apparatus 10, and connection tangs 186a-186d which are rotatably supported and adapted to be connected to respective draw rolls of the drawing apparatus 10. The

draw motors

182, 184 and the connection tangs 186a-186d are housed in the operating compartment 170.

In particular, the first draw motor 182 is mechanically coupled to the first coupling tang 186a of the first draw roller while moving the pulley couples the first coupling tang 186a to the second coupling tang 186b of the second draw roller. Also, the first drawing motor 184 is mechanically coupled to the fourth coupling tang 186a of the fourth drawing roller, while moving the pulley causes the fourth coupling tang 186d to couple to the third coupling tang 186c of the third drawing roller.

Thus, the peripheral speed of the first pair of draw rolls (first and second draw rolls) and the peripheral speed of the second pair of draw rolls (third and fourth draw rolls) can be independently adjusted.

In addition, the control head 80 includes supports 192, 194 for the drive shaft of the roving frame 1.

In particular, the control head 80 includes a first support for rotatably supporting the rail shaft 68 connected to the rail motor 66 to vertically move the rail 60, and a second support 194 at a lower height than the first support 192 to rotatably support the stand shaft 48 connected to the first stand motor 44 to vertically move the stand 40.

The supports 192, 194 are supported by the first side wall 104 of the lower shell 96, alongside the track 60 and the stand 40.

Innovatively, the roving frame according to the invention is particularly compact in size, in particular in longitudinal size, while maintaining a large number of flyers.

In particular, advantageously, the control head has a very small size, reducing the longitudinal dimensions of the roving frame.

Further, advantageously, the control head compartment is accessible from the front or from the rear; this makes it possible to juxtapose several roving frames in a smaller space.

According to another advantageous aspect, the presence of the main cartridge and of the secondary cartridge insertable in the housing of the control head makes it possible to mount those cartridges and the related electrical components after the rest of the machine has been mounted.

Obviously, a person skilled in the art may modify the roving frame described above to meet contingent needs, while still remaining within the scope of protection of the following claims.

Claims

1. Roving frame (1) of a spinning line, comprising:

-a body (2) provided with a plurality of spindles (42) aligned along a longitudinal direction (X) between a head end and a tail end of the body (2);

-a control head (80) applied to said body (2) in correspondence of said head or tail end, comprising:

a) a housing including a lower shell (96);

b) -an electric actuator (122) for a main motor (32, 46, 182, 184, 44, 45, 64, 66) of the roving frame (1), and-a secondary electric component (152) for powering the sensors of the roving frame, for protecting the main motor, for powering electric wires, control relays;

c) a main case (90) which can be inserted into and removed from the lower case (96) from the rear, or which can be inserted into and removed from the lower case (96) from the front, and a sub case (93); the main box defining a main compartment (120) in which the electric actuator (122) or the secondary electric component (152) is housed, the secondary box being insertable into the lower shell (96) from the front and removable from the front, respectively, with respect to the main box (90) or insertable into the lower shell (96) from the rear and removable from the lower shell, respectively, with respect to the main box (90) and removable from the rear, respectively, with respect to the main box, the secondary box defining a secondary compartment (150) in which the secondary electric component (152) or the electric actuator (122) is housed;

wherein a front or rear portion of the lower case (96) is adapted to receive the main cartridge (90) or the sub cartridge (93).

2. Roving frame according to claim 1, wherein the control head (80) further comprises a capacitor (124) of the electric actuator (122), said capacitor being housed in the main compartment (120) or in the secondary compartment (150).

3. Roving frame according to any of the previous claims, wherein said control head (80) comprises: -a filter group (142) and a control group (144) applied to a pneumatic system serving the pressure arm (12) of the drawing plant (10) of the roving frame (1); and an auxiliary compartment (140) accessible from the rear of the control head (80) in which the filter group (142) and the control group (144) are housed.

4. Roving frame according to claim 1 or 2, wherein said control head (80) comprises: -a drawing motor (182, 184) for actuating a drawing cylinder of a drawing apparatus (10) of the roving frame, and-a connection tang (186a-186d) suitable for being connected to a respective drawing roller of the drawing apparatus (10); and an operating compartment (170) accessible from the front of the control head (80), in which the drawing motor (182, 184) and the connection tangs (186a-186d) are housed.

5. Roving frame according to claim 1 or 2, wherein said housing comprises at least one side wall (104) fixed and attached to said body (2) and wherein said control head (80) comprises a support (192, 194) for a drive shaft (68, 48) of said roving frame (1), said support (192, 194) being supported by said side wall (104).

6. Roving frame according to claim 1 or 2, wherein said main compartment (120) is accessible by opening of a rear door (100) and wherein said control head (80) is provided with an air cooling system of said main compartment (120) integrated into said rear door (100).

7. Roving frame according to claim 6, wherein said air cooling system comprises a filter (130) arranged on the outer wall (101) of said rear door (100).

8. Roving frame according to claim 6, wherein said air cooling system comprises at least one suction fan (126) and at least one blower (128) placed on the inner wall (103) of the rear door (100).

9. Roving frame according to claim 7, wherein the space between the inner wall (103) and the outer wall (101) of the rear door (100) realizes a compensation chamber for distributing the dirt on the filter (130).