CN214694545U - Weft accumulator - Google Patents

Abstract

The application provides a weft accumulator, it includes casing, driving motor, hollow shaft, yarn guide disc, stores up yarn drum, fixed length wheel motor and pressure latitude wheel, and driving motor's power portion links to each other with the hollow shaft, and yarn guide disc links to each other with the one end of hollow shaft, and the front end at the casing is fixed to yarn storage drum. The fixed length wheel is driven by the fixed length wheel motor to rotate, the weft pressing wheel is in tangential contact with the fixed length wheel, weft yarns pass through the tangential position of the weft pressing wheel and the fixed length wheel, and the weft yarns are transmitted into the hollow shaft through the matching of the weft pressing wheel and the fixed length wheel. The application provides a weft accumulator, through the frictional force transmission woof between fixed length wheel and the pressure latitude wheel, can guarantee that the woof is transmitted with the speed of settlement all the time, when the woof takes place the instantaneous deceleration, the tension that the woof took place can be offset by the effect of the frictional force between fixed length wheel and the pressure latitude wheel, has avoided the woof to take place excessive tension sudden change when the rapid deceleration, has guaranteed tensile stability, furthest has reduced the damage to the woof.

Description

Weft accumulator

Technical Field

The application relates to the technical field of textile machinery, in particular to a weft accumulator.

Background

A storage device is a component on a weaving machine for storing and determining the length of the weft insertion. The weft accumulators are generally classified into electronic weft accumulators and mechanical weft accumulators.

The existing part of electronic weft accumulators are generally provided with a yarn releasing hook, weft yarns can pass through the yarn releasing hook, when the instantaneous deceleration occurs when the weft yarns are transited from a free flight stage to a restrained issuing state, the tension peak value of the weft yarns at the yarn releasing hook is relatively large, and the yarn releasing hook bears all tension generated by the instantaneous deceleration of the weft yarns, so that the weft yarns are easily abraded by the yarn releasing hook, and particularly for the weft yarns with high decitex, the weft yarns are easily abraded or broken.

The existing mechanical weft accumulator has soft tension, but has huge energy consumption, large material loss, much weft waste and difficult maintenance technology due to the use of a fan, and is difficult to meet the economic production requirement.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a weft accumulator to solve the problems of tension mutation and weft abrasion when instantaneous deceleration occurs to weft in a free flight stage.

The application provides a weft accumulator, which comprises a shell, a driving motor, a hollow shaft, a yarn guide disc and a yarn storage drum, wherein the power part of the driving motor is connected with the hollow shaft;

the power part of the fixed length wheel motor is connected with the fixed length wheel, and the fixed part of the fixed length wheel motor is connected with the rear end of the shell;

the weft pressing wheel is rotatably arranged at the rear end of the shell and is in tangential contact with the fixed length wheel, weft yarns pass through the tangential position of the weft pressing wheel and the fixed length wheel, and the weft yarns are transmitted into the hollow shaft through the matching of the weft pressing wheel and the fixed length wheel.

In a possible realization, the weft pressing wheel is an elastic wheel.

In a possible implementation manner, an elastic sleeve is sleeved on the weft pressing wheel and is in tangential contact with the fixed length wheel.

In a possible implementation mode, the rear end of casing is provided with the mounting bracket, still includes mounting bracket and spring, the both ends of spring respectively with the fixed part of fixed length wheel motor with the one end stationary phase of mounting bracket links to each other, the other end of mounting bracket is provided with the handle, lie in on the mounting bracket the handle with position between the spring with the casing rotates continuously.

In one possible implementation manner, the weft pressing wheel comprises a wheel body, a connecting shaft and a bearing, wherein the wheel body is rotationally connected with the connecting shaft through the bearing;

the connecting shaft is connected with the mounting frame.

In a possible implementation manner, the weft pressing device further comprises a connecting frame, the connecting frame is arranged on the mounting frame, a first porcelain eye is arranged on the connecting frame, and the axis of the first porcelain eye extends to the position between the weft pressing wheel and the fixed length wheel.

In a possible implementation manner, the weft pressing device further comprises a bogie, the bogie and the connecting frame are respectively arranged on two sides of the weft pressing wheel, a second porcelain eye is arranged on the bogie, and the axis of the second porcelain eye extends to the position between the weft pressing wheel and the fixed length wheel.

In a possible realization mode, a third porcelain eye is arranged at one end, far away from the yarn guide disc, of the hollow shaft.

In a possible realization, the yarn guide disc is provided with a yarn outlet hole.

In one possible implementation, the yarn storage drum further comprises an electromagnetic needle assembly, and the electromagnetic needle assembly is arranged on the yarn storage drum.

The technical scheme provided by the application can achieve the following beneficial effects:

the application provides a weft accumulator, through the frictional force transmission woof between fixed length wheel and the pressure latitude wheel, can guarantee that the woof is transmitted with the speed of settlement all the time, when the woof takes place the instantaneous deceleration, the tension that the woof took place can be offset by the effect of the frictional force between fixed length wheel and the pressure latitude wheel, has avoided the woof to take place excessive tension sudden change when the rapid deceleration, has guaranteed tensile stability, furthest has reduced the damage to the woof.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

FIG. 1 is a schematic structural view (showing a housing) of a weft accumulator provided in the embodiment of the present application;

FIG. 2 is a schematic structural view (hidden casing) of the weft accumulator provided by the embodiment of the present application from a viewing angle;

FIG. 3 is a partially enlarged view of a weft accumulator provided in the embodiment of the present application;

FIG. 4 is a schematic structural view (hidden casing) of the weft accumulator provided by the embodiment of the present application from another view angle;

FIG. 5 is a front view (hidden casing) of the weft accumulator provided by the embodiment of the present application;

FIG. 6 is a side view (hidden casing) of the weft accumulator provided by the embodiment of the present application;

FIG. 7 is a state diagram of the weft thread on the storage unit in the prewinding phase;

FIG. 8 is a state diagram of a weft thread on the storage unit in the free flight phase;

FIG. 9 shows the weft thread on the storage unit in the binding phase.

Reference numerals:

1-a shell;

11-a mounting frame;

111-well;

112-a handle;

12-a connecting frame;

121-first porcelain eye;

13-a spring;

2-driving the motor;

21-third porcelain eye;

22-porcelain eye for shaft;

3-a yarn guide disc;

31-a yarn outlet;

32-yarn guide disc porcelain eye;

4-storing the yarn drum;

5-a fixed length wheel;

51-a fixed length wheel motor;

6-weft pressing wheel;

7-a bogie;

71-second porcelain eye;

8-an electromagnetic needle assembly;

81-an electromagnetic needle;

9-weft yarns.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it should be understood that the terms "upper" and "lower" used in the description of the embodiments of the present application are used in a descriptive sense only and not for purposes of limitation. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

As shown in fig. 1 to 9, the embodiment of the present application provides a weft accumulator, which includes a housing 1, a driving motor 2, a hollow shaft, a yarn guiding disc 3 and a yarn storing drum 4, wherein a power portion of the driving motor 2 is connected with the hollow shaft, the yarn guiding disc 3 is connected with one end of the hollow shaft, the yarn storing drum 4 is fixed at the front end of the housing 1, when the weft accumulator works, the driving motor 2 can drive the hollow shaft to rotate, the hollow shaft can drive the yarn guiding disc 3 to rotate synchronously, and weft yarns 9 output from the yarn guiding disc 3 can be wound on the yarn storing drum 4.

Wherein, the weft accumulator also comprises a fixed length wheel 5, a fixed length wheel motor 51 and a weft pressing wheel 6. The power part of the fixed length wheel motor 51 is connected with the fixed length wheel 5, the fixed part of the fixed length wheel motor 51 is connected with the rear end of the shell 1, and the fixed length wheel motor 51 can control the fixed length wheel 5 to rotate. The weft pressing wheel 6 is rotatably arranged at the rear end of the shell 1, the weft pressing wheel 6 is in tangential contact with the fixed length wheel 5, weft yarns 9 pass through the tangential position of the weft pressing wheel 6 and the fixed length wheel 5, and the weft yarns 9 are transmitted into the hollow shaft through the matching of the weft pressing wheel 6 and the fixed length wheel 5.

In this embodiment, the weft pressing wheel 6 is disposed above the fixed length wheel 5, and when the fixed length wheel motor 51 drives the fixed length wheel 5 to rotate, the fixed length wheel 5 can drive the weft pressing wheel 6 to rotate synchronously, wherein it should be noted that when the weft pressing wheel 6 is in tangential contact with the fixed length wheel 5, a certain mutual extrusion force is provided between the weft pressing wheel 6 and the fixed length wheel 5, so that the fixed length wheel 5 can rotate while driving the weft pressing wheel 6 to rotate synchronously, so that the weft yarn 9 between the weft pressing wheel 6 and the fixed length wheel 5 can be influenced by the friction force of the weft pressing wheel 6 and the fixed length wheel 5, and is transmitted to the hollow shaft along with the rotation of the weft pressing wheel 6 and the fixed length wheel 5.

In the prewinding phase, as shown in fig. 7, the gripper limits the transfer of the weft yarn 9, and when the loom is started, the fixed length wheel motor 51 and the drive motor 2 can be started synchronously, and during the first half of the operation of the loom, the loom does not carry out weft insertion. The fixed length wheel motor 51 drives the fixed length wheel 5 to rotate at a set rotating speed, so that the fixed length wheel 5 has a first linear speed; meanwhile, the fixed length wheel 5 can drive the weft pressing wheel 6 to synchronously rotate, and the weft yarns 9 are continuously transmitted into the hollow shaft under the action of friction force of the fixed length wheel 5 and the weft pressing wheel 6; at this time, the weft yarn 9 between the fixed length wheel 5 and the weft pressing wheel 6 is also transported forward at the first linear speed. The weft thread 9 passing through the hollow shaft can be delivered from the shaft eyelet 22 on the hollow shaft and further from the guide disc eyelet 32 on the guide disc 3 and pre-wound on the storage drum 4 as the guide disc 3 rotates.

When the weaving machine is operated to the weft release position, the free flight phase is entered, as shown in fig. 8, the weaving machine starts the weft insertion, the weft thread 9 pre-wound on the storage drum 4 is pulled out at a second linear speed which is higher than the first linear speed, in this phase the pre-wound weft thread 9 on the storage drum 4 is continuously consumed and the guide disc 3 continuously winds the weft thread 9 onto the storage drum 4.

It will be appreciated that, due to the fact that the speed at which the weft thread 9 is pulled from the storage drum 4 is relatively high compared to the speed at which the guide member 3 is wound onto the storage drum 4, the prewound weft thread 9 on the storage drum 4 is completely consumed at a certain moment, i.e. enters a constraint stage, as shown in fig. 9, wherein the moment can be calculated from parameters such as the length of weft insertion and the weft insertion speed of the weft thread 9. At the moment when the weft thread 9 on the storage drum 4 is completely consumed, the weft thread 9 is instantaneously reduced from the second linear speed to the first linear speed by the friction limitation action of the fixed length wheel 5 and the weft pressing wheel 6 on the weft thread 9, and is kept at the first linear speed until the weft insertion is finished.

In the embodiment, the weft yarn 9 is transmitted through the friction force between the fixed-length wheel 5 and the weft pressing wheel 6, so that the weft yarn 9 can be always transmitted at a set speed, and in the process that the weft yarn 9 is instantaneously reduced from the second linear speed to the first linear speed, the tension of the weft yarn 9 can be offset by the action of the friction force between the fixed-length wheel 5 and the weft pressing wheel 6, so that excessive tension sudden change of the weft yarn 9 during rapid speed reduction is avoided, the stability of the tension is ensured, and the damage to the weft yarn 9 is reduced to the maximum extent.

Meanwhile, the embodiment cancels the application of the existing yarn releasing hook, and thoroughly avoids the problem that the weft yarn 9 is seriously abraded due to the overlarge friction generated between the weft yarn 9 and the yarn releasing hook when the weft yarn 9 is rapidly decelerated.

Furthermore, the fixed length wheel 5 has a set circumference, and the weft yarn 9 can be transported by the fixed length wheel 5, so that the transport length of the weft yarn 9 can be accurately controlled.

In a specific embodiment, the rotation speed of the fixed-length wheel motor 51 can be calculated by the following formula:

the rotating speed of the fixed length wheel motor 51 is equal to the weaving machine width x the weaving machine rotating speed/2 pi x the diameter of the fixed length wheel 5.

Further, the rotation speed of the drive motor 2 can be calculated by the following equation:

the rotating speed of the driving motor 2 is equal to N x the rotating speed of the weaving machine; where N is a positive integer and N is the loom width/2 pi x drum 4 diameter. In the actual debugging process, the diameter of the yarn storage drum 4 can be adjusted to ensure that N is a positive integer.

As a preferred implementation, the fixed length wheel 5 can be a metal wheel, and the weft pressing wheel 6 can be an elastic wheel.

Wherein, this pressure latitude wheel 6 can be the rubber tyer, makes the surface that presses latitude wheel 6 have great frictional force, when pressing latitude wheel 6 and fixed length wheel 5 butt, presses latitude wheel 6 can take place slight elastic deformation to can rotate in step through the drive of fixed length wheel 5. Meanwhile, the weft pressing wheel 6 can stably restrain the weft yarn 9 between the fixed length wheel 5 and the weft pressing wheel 6 through the elastic deformation of the weft pressing wheel 6, and the weft yarn is stably transmitted through the matching of the weft pressing wheel 6 and the fixed length wheel 5.

In another embodiment, the weft pressing wheel 6 is sleeved with an elastic sleeve, and the elastic sleeve is in tangential contact with the fixed length wheel 5. Wherein, elastic sleeve's material can be rubber, and during operation, elastic sleeve and fixed length wheel 5 direct contact to it can stably transmit the frictional force of woof 9 to have between elastic sleeve and the fixed length wheel 5. The weft pressing wheel 6 may be a roller made of a rigid material, or may be a roller made of an elastic material, and it is specifically ensured that the weft pressing wheel 6 has sufficient supporting capability, which is not limited in this embodiment.

As a specific implementation, as shown in fig. 1 to 4, the weft storage device further comprises a mounting frame 11 and a spring 13, and the weft pressing wheel 6 can be mounted on the mounting frame 11. The both ends of spring 13 are fixed with the fixed part of fixed length wheel motor 51 and the one end of mounting bracket 11 respectively and are even, and the other end of mounting bracket 11 is provided with handle 112, and the position that lies in between handle 112 and spring 13 on the mounting bracket 11 rotates with casing 1 and links to each other.

Wherein, the mounting bracket 11 is rotatably connected with the housing 1 through a shaft at a set position between the handle 112 and the spring 13, so that the mounting bracket 11 forms a lever structure. When the handle is pressed downwards, the spring 13 is stretched, and one end of the mounting frame 11 connected with the spring moves upwards, so that the weft pressing wheel 6 is separated from the fixed length wheel 5, and the yarn is placed between the weft pressing wheel 6 and the fixed length wheel 5. And when the handle 112 is released, the spring 13 is restored to be deformed to press the weft pressing wheel 6 on the fixed length wheel 5 by the elastic force of itself, so that the transmission of the yarn is realized by the friction force between the weft pressing wheel 6 and the fixed length wheel 5.

As a specific implementation manner, the weft pressing wheel 6 comprises a wheel body, a connecting shaft and a bearing, wherein the wheel body is rotationally connected with the connecting shaft through the bearing; the connecting shaft is connected to the mounting frame 11.

Wherein, the one end of connecting axle can be provided with the external screw thread, can be equipped with hole 111 on the mounting bracket 11, and the part that has the external screw thread on the connecting axle can pass hole 111 back and nut fixed connection to can realize pressing the location of latitude wheel 6. The weft pressing wheel 6 can stably rotate on the connecting shaft through a bearing.

As a specific implementation manner, as shown in fig. 1 to 4, the weft storage device can further comprise a connecting frame 12, the connecting frame 12 is arranged on the mounting frame 11, a first porcelain eye 121 is arranged on the connecting frame 12, and the axial line of the first porcelain eye 121 extends to the position between the weft pressing wheel 6 and the fixed length wheel 5.

After the weft yarn 9 passes through the first porcelain eye 121 towards the direction of the weft pressing wheel 6 and the fixed length wheel 5, the weft yarn can be directly introduced between the weft pressing wheel 6 and the fixed length wheel 5, and can be further transmitted into the hollow shaft through the friction force action when the weft pressing wheel 6 and the fixed length wheel 5 rotate mutually.

As a specific implementation manner, as shown in fig. 4, the weft storage device can further comprise a bogie 7, the bogie 7 and the connecting frame 12 are respectively arranged at two sides of the weft pressing wheel 6, a second porcelain eye 71 is arranged on the bogie 7, and the axis of the second porcelain eye 71 extends to the position between the weft pressing wheel 6 and the fixed length wheel 5.

The direction of the weft yarn 9 transmitted by the weft pressing wheel 6 and the fixed length wheel 5 is vertical to the axial direction of the hollow shaft, if the weft yarn 9 is directly fed into the hollow shaft after being output from the space between the weft pressing wheel 6 and the fixed length wheel 5, the path of the weft yarn 9 after being output from the space between the weft pressing wheel 6 and the fixed length wheel 5 is inclined, and the weft yarn 9 is easy to be separated from the space between the weft pressing wheel 6 and the fixed length wheel 5. For this reason, in the present embodiment, by providing the bogie 7, the weft yarn 9 can be transported in the same plane after being delivered from between the weft pressing wheel 6 and the fixed length wheel 5, so that it is possible to ensure that the weft yarn 9 is stably and continuously transported between the weft pressing wheel 6 and the fixed length wheel 5. At the same time, after the weft thread 9 has passed through the second eyelet 71 on the bogie 7, it can be introduced directly into the hollow shaft without affecting the transport path of the weft thread 9 in the front and rear positions of the weft presser wheel 6 and the fixed-length wheel 5.

In order to reduce wear on the weft thread 9 and to increase the stability of the transport of the weft thread 9, a third eyelet 21 can be provided on the hollow shaft at the end remote from the thread guide disc 3, as shown in fig. 4.

As a specific implementation manner, as shown in fig. 6 and 7, the yarn guiding disc 3 may be provided with a yarn outlet hole 31, and the weft yarn 9 in the hollow tube may be output from the yarn outlet hole 31 and may be wound on the yarn storage drum 4 along with the rotation of the yarn guiding disc 3. Wherein the yarn guide disc porcelain eye 32 can be arranged on the yarn outlet hole 31.

As a specific realization, the weft accumulator can also comprise an electromagnetic needle assembly 8, and the electromagnetic needle assembly 8 is arranged on the yarn storage drum 4.

As shown in fig. 7 to 9, the electromagnetic needle assembly 8 includes an electromagnetic needle 81, the fixing portion of the electromagnetic needle assembly 8 can be fixedly disposed on the yarn storage drum 4, and the electromagnetic needle 81 has a telescopic function. In the prewinding phase, when the loom is not picking, the electromagnetic needle 81 is extended and inserted into the storage drum 4 to block the yarn from being pulled out. While in the free flight phase, when the loom is picking, the electromagnetic needle 81 is retracted to separate from the storage drum 4, at which point the weft thread 9 pre-wound on the storage drum 4 can be pulled out for picking. When the insertion is finished, the electromagnetic needle 81 drops down again into the storage drum 4 to block the weft thread 9 from being pulled out for the next process of storing weft thread.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A weft accumulator comprises a shell (1), a driving motor (2), a hollow shaft, a yarn guide disc (3) and a yarn storage drum (4), wherein a power part of the driving motor (2) is connected with the hollow shaft, the yarn guide disc (3) is connected with one end of the hollow shaft, and the yarn storage drum (4) is fixed at the front end of the shell (1), and is characterized by further comprising a fixed-length wheel (5), a fixed-length wheel motor (51) and a weft pressing wheel (6);

the power part of the fixed length wheel motor (51) is connected with the fixed length wheel (5), and the fixed part of the fixed length wheel motor (51) is connected with the rear end of the shell (1);

the weft pressing wheel (6) is rotatably arranged at the rear end of the shell (1), the weft pressing wheel (6) is in tangential contact with the fixed length wheel (5), weft yarns (9) pass through the positions where the weft pressing wheel (6) is tangential to the fixed length wheel (5), and the weft yarns (9) are transmitted into the hollow shaft through the matching of the weft pressing wheel (6) and the fixed length wheel (5).

2. A prewinder according to claim 1, characterized in that the weft pressing wheel (6) is an elastic wheel.

3. Weft accumulator according to claim 1, characterized in that the weft pressing wheel (6) is sleeved with an elastic sleeve which is in tangential contact with the fixed length wheel (5).

4. A weft accumulator according to claim 1, characterized in that it further comprises a mounting frame (11) and a spring (13), the two ends of the spring (13) are fixedly connected with the fixed part of the fixed length wheel motor (51) and one end of the mounting frame (11), respectively, the other end of the mounting frame (11) is provided with a handle (112), and the part of the mounting frame (11) between the handle (112) and the spring (13) is rotatably connected with the housing (1).

5. Weft accumulator according to claim 4, characterized in that the weft pressing wheel (6) comprises a wheel body, a connecting shaft and a bearing, the wheel body is rotatably connected with the connecting shaft through the bearing;

the connecting shaft is connected with the mounting frame (11).

6. A prewinder according to claim 4, characterized in that it further comprises a connecting frame (12), said connecting frame (12) being arranged on said mounting frame (11), said connecting frame (12) being provided with a first porcelain eye (121), the axis of said first porcelain eye (121) extending towards a position between said weft presser wheel (6) and said fixed length wheel (5).

7. A prewinder according to claim 6, characterized in that it further comprises a bogie (7), said bogie (7) and said connecting frame (12) being respectively arranged on both sides of said weft pressing wheel (6), said bogie (7) being provided with a second porcelain eye (71), the axis of said second porcelain eye (71) extending towards the position between said weft pressing wheel (6) and said fixed length wheel (5).

8. Weft feeder according to claim 7, characterized in that a third eyelet (21) is provided on the hollow shaft at the end remote from the yarn guide disc (3).

9. A prewinder according to claim 1, characterized in that the guide disc (3) is provided with a yarn exit hole (31).

10. A prewinder according to claim 1, further comprising an electromagnetic needle assembly (8), the electromagnetic needle assembly (8) being arranged on the storage drum (4).

Images