CN218321801U - Spool holding creel for weaving - Google Patents

Abstract

A spool holding creel for weaving includes a frame provided with uprights having a cylindrical profile. The pin is adapted to support the spool and is connected to the upright by a spool holder. The pin is connected to a U-bend plate provided with a lower horizontal wall, an upper horizontal wall and a vertical wall. The lower horizontal wall and the upper horizontal wall are provided with respective aligned plate openings. The ring has a bottom surface, a top surface, an outer surface, and a cylindrical inner surface that substantially matches the cylindrical profile of the vertical member, the ring being adapted to be mounted on the vertical member and axially secured to the vertical member between the lower horizontal wall and the upper horizontal wall. Two recesses are formed in angularly spaced positions on the top surface of the ring or on the lower surface of the upper horizontal wall, a projection integral with the other of the top surface of the ring and the lower surface of the upper horizontal wall being adapted to selectively engage one of the two recesses so as to retain the U-bend plate in one of two respective configurations of mutual rotation about the vertical axis of the upright.

Description

Spool holding creel for weaving

Technical Field

The utility model relates to a spool keeps creel (wind hold creel) for weaving.

Background

Yarn racks are well known in the textile field for supporting a plurality of reels on which respective yarns are wound. The yarn unwound from the reel is suitable for being delivered to a textile machine, such as a weaving or knitting machine.

Creels typically include a frame on which the spools are arranged in generally horizontal and/or vertical rows. The frame may include a lower base and an upper base, which are interconnected by a number of uprights.

The uprights are usually connected to the upper and lower bases of the frame by means of clamps provided with a fixed portion welded to the respective base and a removable portion connected to the fixed portion by means of two screws, the uprights being sandwiched between the fixed and removable portions.

The reels are mounted in idle manner on respective pins connected to the uprights by respective reel holders. The reel holders are generally designed to allow manual rotation of each reel by 180 ° about the vertical axis of the vertical member, between an operating configuration in which the yarn can be unwound from the respective reel and delivered to the textile machine, and a reel change configuration which allows the operator to periodically change the reels.

The above-mentioned reel holder generally comprises a stationary member fixed to the upright and a rotary member to which the pin is connected. In order to keep the rotating member in a desired position with respect to the stationary member, known reel holders are, with regard to the above two configurations, usually provided with balls which are arranged between the stationary member and the rotating member and which are urged by a spring into a corresponding seat (seat) provided on the stationary member or the rotating member.

The above-mentioned known systems are relatively complex and expensive to manufacture and may require frequent maintenance operations, in particular with respect to the lubrication of the balls and of the seats thereof.

SUMMERY OF THE UTILITY MODEL

In view of the above, a main object of the present invention is to provide a reel holding creel for weaving that is simpler and cheaper, and more reliable and less maintenance-free, in terms of the connection of the uprights to the upper and lower bases and of the reel to the uprights, compared to known solutions.

The above objects and other objects and advantages are achieved by the following aspects of the present invention, which will be better seen from the following description.

1) A spool holding creel for weaving, comprising:

a frame provided with at least one upright having a cylindrical profile,

at least one pin adapted to support the reel in an idle manner and connected to said upright by means of a reel holder,

characterized in that said reel holder comprises:

a U-shaped bent plate to which the pin is connected, the U-shaped bent plate being provided with a lower horizontal wall, an upper horizontal wall and a vertical wall, the lower horizontal wall and the upper horizontal wall being provided with respective aligned plate openings for mounting on the vertical member,

a ring having a bottom surface, a top surface, an outer surface, and a cylindrical inner surface that substantially matches the cylindrical profile of the upright, the ring adapted to be mounted on the upright and axially secured to the upright between the lower horizontal wall and the upper horizontal wall,

two recesses formed in one of the top surface of the ring and a lower surface of the upper horizontal wall at angularly spaced locations,

a protrusion integral with the other of said top surface of said ring and said lower surface of said upper horizontal wall and adapted to selectively engage one of said two recesses so as to retain said U-bend plate in one of two respective configurations of mutual rotation about a vertical axis of said vertical member.

2) The spool holding creel for weaving according to 1), wherein the two recesses are formed on the top surface of the ring, and the protrusion is integral with the lower surface of the upper horizontal wall.

3) The spool holding creel for weaving according to claim 2), wherein the projection includes a head of a set screw that is inserted from below into a corresponding slot formed on the upper horizontal wall.

4) The spool holding creel for weaving according to 1), characterized in that the spool holding creel for weaving includes a compression spring disposed between the ring and the lower horizontal wall for resiliently biasing the upper horizontal wall downward against the top surface of the ring.

5) The spool holding creel for weaving according to 4), wherein the compression spring is a coil spring.

6) The reel-holding creel for weaving according to 1), characterized in that the uprights are connected to the lower and upper bases of the frame by respective fastening means.

7) Reel-holding creel for weaving according to 6), characterized in that each of the fastening means comprises a U-shaped bracket provided with two horizontal side portions having ends facing away from the vertical base portion welded transversely to the lower base or to the upper base, and a vertical base portion, said horizontal side portions being provided with respective aligned bracket openings defining seats in which the ends of the vertical members are received, said vertical members being axially locked by means of locking screws.

8) The spool holding creel for weaving according to 1), characterized in that the two recesses are formed at diametrically opposite positions.

Drawings

The invention will now be described in more detail with reference to preferred embodiments, which are shown by way of non-limiting example in the accompanying drawings.

Fig. 1 is a perspective view of a spool holding creel according to the present invention;

fig. 2 is a perspective view showing an enlarged scale detail of the spool holding creel of fig. 1;

FIG. 3 is a cross-sectional view of FIG. 2 taken along line III-III;

FIG. 4 is a perspective view of components of the spool holding creel of FIG. 1;

FIG. 5 is an exploded perspective view of the components of FIG. 4;

FIG. 6 is an exploded perspective view similar to FIG. 5 but showing further elements of the component of FIG. 4;

fig. 7 is a side view showing the components of fig. 4 mounted in the spool holding creel of fig. 1 in a first operating configuration;

fig. 8 is a front view showing the components of fig. 4 installed in the spool holding creel of fig. 1 in a second operational configuration;

FIG. 9 is a cross-sectional view of FIG. 7 taken along line IX-IX;

FIG. 10 is a cross-sectional view of FIG. 7 taken along line X-X;

FIG. 11 is a cross-sectional view of FIG. 8 taken along line XI-XI;

fig. 12 is a side view showing the components of fig. 4 mounted in the spool holding creel of fig. 1 in the second operational configuration of fig. 8;

fig. 13 is a perspective view of components of the spool holding creel of fig. 1 installed in the spool holding creel of fig. 1.

Detailed Description

Referring first to fig. 1, a spool holding creel 10 is adapted to support a plurality of spools 12 with respective yarns wound on the spools 12. The yarn unwound from the reel is suitable for being delivered to a textile machine (not shown), such as a weaving or knitting machine.

The creel 10 generally comprises a frame 13, the frame 13 being provided with a lower base 14 and an upper base 16, the lower base 14 and the upper base 16 being connected to each other by four uprights 18 having a cylindrical profile. The lower base 14 includes a lower cross member 14a and a lower side member 14b welded to each other in a T-shape, and is supported on three pivot wheels 20 fixed to the ends of the T-shape. Similarly, the upper base 16 includes an upper cross member 16a and an upper longitudinal member 16b welded to each other in a T-shape.

Two of the uprights 18 are connected laterally to the ends of the lower cross member 14a and the upper cross member 16 a. Two further vertical members 18 are connected laterally to the free ends of the lower and upper longitudinal beams 14b, 16b on opposite sides of the lower and upper longitudinal beams 14b, 16b.

Fastening means 21 are provided for connecting the upright to the lower base 14 and the upper base 16.

Referring now in particular to fig. 2 and 3, each fastening device 21 comprises a U-shaped bracket 22, which bracket 22 is provided with two horizontal side portions 22a, 22b and a vertical base portion 22c. The ends of the horizontal side portions 22a, 22b remote from the vertical base portion 22c are welded transversely to a respective one of the lower cross member 14a, lower longitudinal member 14b, upper cross member 16a and upper longitudinal member 16b (lower cross member 14a in fig. 2 and 3). The horizontal side portions 22a, 22b are provided with respective aligned bracket openings 24a, 24b, the bracket openings 24a, 24b defining a seat for receiving one end of the respective upright 18. The vertical members 18 are axially locked in the respective U-shaped brackets 22 by means of first locking screws 26. The first locking screw 26 is inserted from the outside into a first through hole 28 formed on the vertical base portion 22c and is combined with a first nut 30 (fig. 3) on the opposite side of the vertical base portion 22c. By tightening the first locking screw 26, the first nut 30 abuts against the inner surface of the U-shaped bracket 22, while the tip of the locking screw 26 is biased against the upright member 18, in such a way as to axially lock the upright member 18.

Each reel 12 is mounted in an idle manner on a respective pin 32 (fig. 1), which pin 32 is connected to the respective upright 18 by means of a reel holder 34. In the present embodiment, the axis of the pin 32 is horizontal, but those skilled in the art will immediately appreciate that such an arrangement is not necessary.

Referring now specifically to fig. 4-13, each spool holder 34 includes a ring 36, the ring 36 being axially defined by a bottom surface 36a and a top surface 36b. In this exemplary embodiment, both the bottom surface 36a and the top surface 36b are flat and perpendicular to the axis of the ring 36, but the top surface 36b is provided with two recesses 38',38 "at angularly spaced positions (preferably at diametrically opposed positions) and an annular groove 39 near the inner diameter of the ring 36. The ring 36 also has an outer surface 36c and an inner surface 36d. The inner surface 36d substantially matches the cylindrical profile of the upright 18.

The ring 36 is adapted to be mounted on the corresponding upright 18 and is axially fixed to the upright 18 by means of a second locking screw 40. The second locking screw 40 is inserted into a through hole 41 extending between the outer surface 36c and the inner surface 36d of the ring 36, and engages a second nut 42 disposed in a nut seat 43, the nut seat 43 being formed on the inner surface 36d. By tightening the second locking screw 40, the second nut 42 abuts against the bottom of the nut seat 43, while the tip of the second locking screw 40 is biased against the vertical member 18, in such a way as to axially lock the ring 36 with respect to the vertical member 18.

Each spool support 34 also includes a U-bend plate 44, with the pin 32 secured to the U-bend plate 44. The U-bend plate 44 is provided with a lower horizontal wall 44a, an upper horizontal wall 44b, and a vertical wall 44c. The lower 44a and upper 44b horizontal walls are provided with respective aligned plate openings 46a, 46b for mounting on the respective uprights 18, advantageously inserted with respective bushings 48a, 48b, the bushings 48a, 48b allowing a smooth rotation of the U-bend plate 44 around the uprights 18. Each of the bushes 48a, 48b is provided with a resilient tab 48a ', 48b' projecting axially in one direction to engage the respective plate opening 46a, 46b by snap action, and an annular rib 48a ", 48b" projecting axially in the opposite direction. The annular rib 48b "of the bushing 48b, which engages the plate opening 46b of the upper horizontal wall 44b, is adapted to be received in the annular groove 39 of the ring 36 under certain operating conditions, as will be better described below.

In operation, the ring 36 is disposed between the lower horizontal wall 44a and the upper horizontal wall 44b. The set screws 50 are inserted from below into corresponding slots 52 (fig. 9, 11) formed in the upper horizontal wall 44b and are secured to the upper horizontal wall 44b by second nuts 54. The set screw 50 has a head 50a (fig. 9, 11, 12) projecting downwardly from the lower surface of the upper horizontal wall 44b so that the set screw 50 can selectively engage one of the two recesses 38',38 "of the ring 36 depending on the orientation of the U-bend plate 44 relative to the upright 18.

In the present embodiment, the pin 32 is fixed to the vertical wall 44c of the U-bend plate 44 by a clamping collar 56 provided with a set screw 57. The clamping collar 56 is attached to the vertical wall 44c by three set screws 58 (fig. 6).

Advantageously, although not necessarily, a coil spring 60 may be disposed between the ring 36 and the lower horizontal wall 44a to resiliently bias the upper horizontal wall 44b downwardly against the top surface 36b of the ring 36.

In operation, the reel 12 can be manually rotated by 180 ° about the vertical axis of the respective vertical member between an operating configuration in which the yarn can be unwound from the reel 12 and delivered to the textile machine and a reel change configuration which allows the reel 12 to be periodically changed. The above two alternative configurations correspond to two positions where the head 50a of the screw 50 can selectively engage the two recesses 38',38 ". When the head 50a of the screw 50 engages one of the two recesses 38',38", the annular rib 48b" of the bushing 48b, which engages the plate opening 46b of the upper horizontal wall 44b, is received in the annular groove 39 of the ring 36.

Advantageously, the lower horizontal wall 44a is also provided with a second set screw 62, the second set screw 62 having a corresponding nut 64, so as to allow the U-bend plate 44 to be mounted indifferently as shown in the figures or in an inverted position.

Coil spring 60 helps U-bend plate 44 maintain a desired configuration relative to upright 18, although in practice it has been found that a given weight of the movable portion of spool holder 34 and spool 12, gravity is sufficient in most cases.

In general, it has been found in practice that the reel-holding creel for weaving according to the present invention fully achieves the intended aim.

In particular, it is simpler, cheaper and more reliable than the known solutions mentioned in the background section of the present description, since it comprises a smaller number of components, which are also simpler and less maintenance-free.

The preferred embodiments of the invention have been described herein, but of course, many variations are possible to those skilled in the art within the scope of the claims.

For example, all of the above nuts may be dispensed with if the holes into which the respective screws are inserted are threaded.

Furthermore, the set screw (or screws) may be replaced by any of various projections integral with the U-bend plate 44, such as a suitably shaped metal member welded to the lower surface of the upper horizontal wall 44b (and possibly another metal member welded to the upper surface of the lower horizontal wall 44 a), or a projection integrally formed from the U-bend plate 44, such as by stamping.

Further, the coil spring 60, if present, may be replaced with any other suitable compression spring.

However, it will be apparent that the arrangement of the projections and recesses may be reversed, i.e., the projections may be provided on the top surface 36b of the ring 36 and the recesses may be formed on the lower surface of the upper horizontal wall 44b of the U-bend plate 44.

Of course, the shape of the frame 13 can vary widely with respect to the shape described and illustrated herein, as long as it has at least one upright with a cylindrical profile, on which the reel holder 34 as above can be mounted.

Claims (8)

1. A spool holding creel (10) for weaving, comprising:

a frame (13) provided with at least one upright (18) having a cylindrical profile,

at least one pin (32) adapted to support the reel (12) in an idle manner and connected to said upright (18) by means of a reel holder (34),

characterized in that the reel holder (34) comprises:

a U-bend plate (44), said pin (32) being connected to said U-bend plate (44), said U-bend plate (44) being provided with a lower horizontal wall (44 a), an upper horizontal wall (44 b) and a vertical wall (44 c), said lower horizontal wall (44 a) and said upper horizontal wall (44 b) being provided with respective aligned plate openings (46 a, 46 b) for mounting on said vertical member (18),

a ring (36) having a bottom surface (36 a), a top surface (36 b), an outer surface (36 c) and a cylindrical inner surface (36 d) substantially matching the cylindrical profile of the upright (18), the ring (36) being adapted to be mounted on the upright (18) and axially fixed to the upright (18) between the lower horizontal wall (44 a) and the upper horizontal wall (44 b),

two recesses (38', 38 ") formed in angularly spaced locations on one of the top surface (36 b) of the ring (36) and a lower surface of the upper horizontal wall (44 b),

a protrusion integral with the other of said top surface (36 b) of said ring (36) and said lower surface of said upper horizontal wall (44 b) and adapted to selectively engage one of said two recesses (38', 38 ") so as to retain said U-bend plate (44) in one of two respective configurations of mutual rotation about the vertical axis of said upright (18).

2. Spool holding creel (10) for weaving according to claim 1, characterized in that the two recesses (38', 38 ") are formed on the top surface (36 b) of the ring (36) and the protrusion is integral with the lower surface of the upper horizontal wall (44 b).

3. Reel-holding creel (10) for weaving according to claim 2, characterized in that said projection comprises a head (50 a) of a set screw (50) inserted from below into a corresponding slot (52) made on said upper horizontal wall (44 b).

4. Spool holding creel (10) for weaving according to claim 1, characterized in that the spool holding creel (10) for weaving comprises a compression spring (60), the compression spring (60) being arranged between the ring (36) and the lower horizontal wall (44 a) for resiliently biasing the upper horizontal wall (44 b) downwards against the top surface (36 b) of the ring (36).

5. Spool holding creel (10) for weaving according to claim 4, characterised in that the compression spring (60) is a helical spring.

6. Reel-holding creel (10) for weaving according to claim 1, characterized in that said uprights (18) are connected to the lower base (14) and to the upper base (16) of the frame (13) by respective fastening means (21).

7. Reel-holding creel (10) for weaving according to claim 6, characterized in that each of the fastening means (21) comprises a U-shaped bracket (22) provided with two horizontal side portions (22 a, 22 b) and a vertical base portion (22 c), the horizontal side portions (22 a, 22 b) having ends facing away from the vertical base portion (22 c) welded transversely to the lower base (14) or to the upper base (16), the horizontal side portions (22 a, 22 b) being provided with respective aligned bracket openings (24 a, 24 b), the bracket openings (24 a, 24 b) defining seats in which the ends of the vertical members (18) are received, the vertical members (18) being axially locked in the seats by means of locking screws (26).

8. Spool holding creel (10) for weaving according to claim 1, characterized in that the two recesses (38', 38 ") are formed at diametrically opposite positions.

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