JPH093735A - Spindle-controlling device in spinning machine - Google Patents

Abstract

PURPOSE: To prevent the occurrence of adverse effects on the pressure of tangential belts acting on a spindle which is adjacent to another spindle that is distorted by a pressure working on the former spindle when braking by setting the operational position of a knee brake at a position similar to that of a knee brake in a tin pulley driving. CONSTITUTION: A front cover 4 for covering spindle driving parts such as a spindle wharve 2a and a tangential belt 3 is placed so as to extend along a spindle rail 1. Knee brakes 5 are attached on the front cover 4 at the interval corresponding to a spindle pitch. The knee brake 5 is composed of a lever 6 formed of a steel plate obtained by a press working and a brake shoe 8 which is fixed at the tip of the lever 6 with a screw 7. A shaft 8a formed on the brake shoe 8 is rotatably inserted into a supporting hole 9 formed on the front cover. An operational part 6a which can be actuated by a knee is formed at the lower end of the lever 6 in such a manner as to extend toward the spindle rail 1 obliquely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle braking device for a spinning machine such as a ring spinning machine and a ring twisting machine, and more particularly to a spindle braking device for a spinning machine adopting a tangential belt drive system.

[0002]

2. Description of the Related Art A spindle of a spinning machine such as a ring spinning machine or a ring twisting machine is a belt that is run while a spindle blade supporting a bobbin is rotatably supported by a bolster via a spindle warb and is pressed against the spindle warb. It is designed to be driven to rotate by. The spindle drive system includes a tangential belt drive system and a chin pulley drive system. In the tangential belt drive system, a drive belt common to a plurality of weights or all weights is brought into pressure contact with a spindle warb to rotate a spindle blade. The chin pulley drive system fixes a large number of chin pulleys integrally rotatably to the main shaft located in the center of the machine base, and between each chin pulley and two spindles on each of the left and right sides of the chin pulley, for a total of four spindle warves. A drive tape (belt) is wrapped around and the spindle blade is driven to rotate.

In this type of spinning machine, a braking device is provided for each weight, and when a yarn breakage occurs, the braking device equipped for the weight is actuated to forcibly stop the rotation of the spindle. Perform joint work. Since it is necessary for the worker to perform the yarn splicing work with both hands and release the braking at a predetermined timing, a device generally called a knee brake is used as a braking device.

As a knee brake used in a spinning machine adopting a chin pulley drive system, for example, Japanese Patent Laid-Open No. 56-12 is used.
The configuration shown in FIG. 8 disclosed in Japanese Patent No. 8320 is general. The knee brake 51 is formed in a lever shape, and is rotatably supported by a flange portion 53a of a bolster 53 supported by a spindle rail 52 via a support shaft 54, and a flange portion 55 of a spindle warb 55.
A brake shoe (not shown) capable of contacting a is provided. Then, in the free state, the knee brake 51 engages with the upper surface of the spindle rail 52 as shown in FIG. 8, and the brake shoe is held at the standby position separated from the flange portion 55a. When stopping the rotating spindle 56,
The operator pushes up the operation portion 51a at the lower end of the knee brake 51 with the knee. By this operation, the knee brake 51 is rotated in the clockwise direction in FIG. 8 about the support shaft 54, the brake shoe comes into contact with the flange portion 55a, and the rotation of the spindle 56 is forcibly stopped.

In Japanese Utility Model Laid-Open No. 2-46873, as a brake device of a double twisting machine, as shown in FIG. 9, a lever 57 of the brake device is provided with a plurality of arm rods 57a, 57b, 57c.
Are connected to each other in the form of a link, and the knee pushing part 5 is attached to the arm rod 57c.
It is disclosed that 8 is supported by a shaft 59. Second
The arm rod 57b of the first arm rod 57a is different from the arm rod 57b of the first arm rod 57a.
It is fixed by a bolt 60 so that the angle formed by a and 57b can be adjusted. The third arm rod 57c is fixed to the second arm rod 57b by a bolt 61 so that the angle formed by the both arm rods 57b and 57c can be adjusted. Then, the knee pushing portion 58
When the lever is pressed by the knee, the lever 57 rotates about the shaft 63 against the urging force of the spring 62, and the operating rod 57d of the first arm rod 57a moves forward to move through the brake shoe (not shown). To brake the spindle.

In a spinning machine adopting a tangential belt drive system, a spindle wave and a tangential belt constituting a spindle drive unit are provided for the purpose of preventing noise during traveling of the tangential belt and preventing the accumulation of fly dust. A cover for covering the above is provided. It is difficult to equip the knee brake 51 having the above-described structure adopted in the chin pulley drive type spinning machine so as not to interfere with the cover. Therefore,
In the spinning machine adopting the tangential belt drive system, at least an operation portion is attached to the cover as a knee brake.

FIG. 10 is disclosed in Japanese Utility Model Publication No. 48-23721.
As shown in (a) and (b), a soundproof cover 64 attached so as to extend along a spindle rail 52 extending along the longitudinal direction of the spinning machine base (direction perpendicular to the paper surface of FIG. 10). An operating portion 65a of the knee brake 65 is provided. The flexible operation portion 65a is arranged on the opposite side of the tangential belt 66 with the spindle warb 55 interposed therebetween. As shown in FIG.
A brake lever 67 having a brake shoe 67a fixed to an intermediate portion thereof is rotatably supported at its base end with respect to a support shaft 68 erected on the side of the spindle warb 55. The brake lever 67 is held by the torsion spring 69 such that the brake shoe 67a is urged in a direction in which the brake shoe 67a is separated from the peripheral surface of the spindle wove 55, and the tip portion 67b thereof is in contact with the operation portion 65a. And
When the operating portion 65a is pushed by the knee, the operating portion 65a is bent, and the brake lever 67 is rotated toward the side closer to the spindle wove 55 so that the brake shoe 67a is moved to the spindle worb 55.
The spindle 56 is braked by being pressed against the peripheral surface of the spindle. Further, Japanese Utility Model Laid-Open No. 5-46972 discloses a knee brake having a structure in which a brake shoe is integrally formed with an operation portion attached to a soundproof cover.

[0008]

A conventional knee brake 65 used in a tangential belt drive type spinning machine.
May have a position considerably higher than the height of the operator's knee because the position of the operating portion 65a thereof is at the same height as the spindle warb 55. In this case, the operator may lift one foot completely from the floor. There is a problem in that operability is poor because braking operation is required in the closed state. Although it is conceivable to use the device disclosed in Japanese Utility Model Publication No. 2-46873,
Since the structure becomes complicated and the lever 57 rotates in the front-back direction, that is, in the plane orthogonal to the longitudinal direction of the spindle rail, it is still difficult to provide the cover.

In each of the conventional knee brakes, a pressing force acts on the spindle in a direction orthogonal to or intersecting the longitudinal direction of the spindle rail during braking.
In the case of the chin pulley system, the belt is 1
Since it is wound in the range of / 4 round, even if the spindle to be braked slightly bends due to the pressing force, the rotation speed of the other spindles does not change and the quality of the spun yarn does not change.
However, in the case of the tangential belt drive system, the tangential belt is tangentially in contact with the spindles arranged in a row so that the spindle is tangentially driven by the pressing force. When it bends in the direction intersecting the shear belt, the contact pressure between the adjacent spindle and the tangential belt is likely to change.

When the speed of the spinning frame is increased, the force required to brake the spindle increases, and the pressing force that acts on the spindle during braking increases. Therefore, in order to prevent the spindle from flexing in the direction intersecting the tangential belt due to the pressing force, it is necessary to increase the rigidity of the spindle. Although the rigidity can be increased by increasing the diameter of the spindle, the spindle becomes heavier and the energy consumption for driving increases accordingly. If the pressing force acting on the spindle is increased without increasing the rigidity of the spindle, the contact pressure between the spindle adjacent to the spindle to be braked and the tangential belt may change to affect the quality of the spun yarn. is there.

The present invention has been made in view of the above problems, and its first object is to make the position of the knee during braking operation equivalent to that of the knee brake in the chin pulley drive system.
It is an object of the present invention to provide a spindle braking device for a spinning machine, which does not adversely affect the contact pressure between the adjacent spindle and the tangential belt even if the spindle is bent by the pressing force acting on the spindle during braking. In addition to the first object, a second object is to provide a spindle braking device for a spinning machine that does not hinder the attachment of the cover that covers the spindle drive unit.

[0012]

In order to achieve the first object, according to the invention of claim 1, in a spinning machine which drives a spindle by a tangential belt drive system, a spindle wobble is provided for each spindle. A lever that has a braking portion that can come into contact with and that can be operated by a knee is formed so that the operating portion of the lever extends below the spindle support portion of the spindle rail, and the lever is orthogonal to the longitudinal direction of the spindle rail. It is provided so as to be rotatable around an axis extending in the horizontal direction.

According to a second aspect of the present invention, the spinning machine is provided with an intermediate peg on the front side corresponding to each spindle for temporarily inserting an empty bobbin at the time of tube changing work, and the lever interferes with the intermediate peg. In order not to do so, at least a portion of the spindle rail located below the spindle support portion is provided so as to extend obliquely downward.

Further, in the invention described in claim 3, in the invention described in claim 1 or 2, the lever is
It is formed of a plate material, and the operation portion is formed in the lower portion thereof so as to extend obliquely toward the spindle rail side.

In order to achieve the second object, according to the invention described in claim 4, in the invention described in any one of claims 1 to 3, the lever extends along the spindle rail. At least covers the front side of the spindle drive part and is arranged outside the detachably provided cover, and the braking part is arranged inside the cover and can rotate integrally with the lever via the shaft supported by the cover. Supported by.

According to a fifth aspect of the invention, in the invention according to any one of the first to third aspects, the lever is formed integrally with the braking portion, and the lever is attached to the spindle rail. A cover that is rotatably supported and covers the spindle drive unit is attached to the spindle rail in a state of covering the upper portion of the lever.

[0017]

According to the invention described in claims 1 to 5, the operating portion of the lever, which has a braking portion capable of contacting the spindle warb and is operable by the knee, extends below the spindle supporting portion of the spindle rail. Has been formed. Therefore,
The height of the operating portion is almost the same as that of the knee brake used in a conventional chin pulley drive type spinning machine.

When the lever is rotated by operating the operating portion with the knee, the lever is rotated around an axis extending in the direction orthogonal to the longitudinal direction of the spindle rail and in the horizontal direction, and the braking portion comes into contact with the spindle wove. It is located in the braking position.
The braking unit applies a pressing force to the spindle warb in a direction parallel to the longitudinal direction of the spindle rail. When the pressing force is large and the spindle bends, the spindle bends in a plane parallel to the traveling direction of the tangential belt. Therefore, even if the spindle bends, the contact pressure with respect to the tangential belt does not change. Therefore, the contact pressure between the adjacent spindle and the tangential belt does not change.

According to a second aspect of the present invention, the spinning machine is provided with an intermediate peg on the front side corresponding to each spindle for temporarily inserting an empty bobbin at the time of tube replacement work. The lever is provided so that at least a portion of the spindle rail located below the spindle support portion extends obliquely downward so as not to interfere with the intermediate peg. Therefore, the lever does not hinder the pipe replacement work.

In the invention according to claim 3, the operating portion formed at the lower portion of the lever is formed so as to extend obliquely toward the spindle rail side. Therefore, by putting your knees on the operating part and moving it forward,
The component force causes the spindle rail to rotate in a plane parallel to the longitudinal direction.

According to a fourth aspect of the invention, the lever is arranged outside the cover that covers at least the front side of the spindle drive unit while extending along the spindle rail, and the braking unit is arranged inside the cover and the cover. It is rotatably supported integrally with the lever via a shaft supported by the. The presence of the cover reduces noise when the tangential belt travels. Even if the cover is not provided with a relief portion, the lever can be rotated without interfering with the cover. The lever is attached to and removed from the spindle rail together with the cover.

According to the fifth aspect of the present invention, the lever is rotatably supported with respect to the spindle rail, and the cover for covering the spindle drive section is detached from the spindle rail independently of the lever.

[0023]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS. Spindles 2 are arranged in a row at a constant pitch on a spindle rail 1 extending along the longitudinal direction of the spinning machine stand (perpendicular to the paper surface). Endless tangential belt 3 that drives the spindle 2
Is wound between a drive pulley and a guide pulley (neither is shown) while traveling in a tangential direction with respect to the spindle wave 2a. Inside the tangential belt 3, the tangential belt 3 and the spindle warb 2
Contact rollers (not shown) for ensuring a contact pressure with a are arranged at predetermined intervals. The contact roller presses the tangential belt 3 toward the spindle wave 2a side with a predetermined pressure by the urging force of a spring.

A front cover 4 as a cover for covering the spindle drive portion is arranged on the spindle rail 1 so as to extend along the spindle rail 1. The spindle drive unit includes a spindle wave 2a, a tangential belt 3 and a contact roller.
The front cover 4 has an inverted L-shaped cross section, and is attached to the spindle rail 1 so as to cover the spindle rail 1 from the front side (left side in FIG. 1) of the spindle rail 1. The front cover 4 is divided into lengths of about 1 m to facilitate the attachment / detachment work, and handles (not shown) are attached to both ends of each divided member. Further, the front cover 4 is provided with a leaf spring engaging portion (neither of which is shown) capable of fitting with the locking portion provided on the spindle rail 1, and is detachable with one touch. The rear side of the spindle rail 1 is covered with a cover (not shown) formed separately.

As shown in FIG. 2, a knee brake 5 is attached to the front cover 4 at an interval corresponding to the spindle pitch. As shown in FIG. 1, the knee brake 5
Is a lever 6 formed by pressing a metal plate such as a steel plate into a substantially crank shape on the side surface, and a brake shoe 8 as a braking part fixed to the tip (upper end) of the lever via a screw 7.
It is composed of

A circular support hole 9 is formed in the front cover 4 at a position that serves as a center of rotation of the lever 6, and an elongated hole 10 is formed above each support hole 9. As shown in FIG. 1, the brake shoe 8 made of synthetic resin is disposed inside the front cover 4, and is a shaft that is rotatably fitted into a support hole 9 on a surface corresponding to the front cover 4. A shaft portion 8a and a protrusion 8b loosely inserted in the elongated hole 10 are formed. As shown in FIGS. 4 (a) and 4 (b), a portion of the brake shoe 8 corresponding to the spindle wave 2a is formed into a substantially quarter-arc shape, and a surface parallel to the tangential belt 3 passing through the center of the spindle wave 2a. A pair of abutting portions 8c are formed at symmetrical positions sandwiching,
It is configured to come into contact with the spindle wave 2a from one side surface. As shown in FIGS. 3A and 3B,
The support hole 9 formed in the front cover 4 is formed at a position where the shaft portion 8a is displaced from the position corresponding to the center of the spindle 2.

The lever 6 is disposed outside the front cover 4 in a state of abutting against the tip of the shaft portion 8a, and is fixed so as to be integrally rotatable with respect to the brake shoe 8 by a screw 7 screwed onto the shaft portion 8a. Has been done. A ring 11 for preventing the rattling of the lever 6 is interposed between the lever 6 and the front cover 4 on the shaft portion 8a. The ring 11 is made of a material having a small frictional resistance.

As shown in FIGS. 1 and 2, on the front side of the spindle rail 1, there is provided an intermediate peg 12 at a position corresponding to each spindle 2 for temporarily inserting an empty bobbin (not shown) at the time of pipe replacement work. It is arranged. The rotation of the brake shoe 8 and the lever 6 is restricted by the protrusion 8b engaging with the end of the elongated hole 10, and when viewed from the front in a free state so that the lever 6 does not interfere with the intermediate peg 12. In addition, the elongated hole 10 is formed in a shape in which the lever 6 is arranged at a position extending obliquely downward. The lever 6 is shown in FIG.
As shown in FIG. 5, a portion located below the spindle support portion 1a is formed in a shape that extends obliquely downward and forward and bends in the middle to extend straight downward, and a lower end portion thereof has an operating portion 6a operable by a knee. Are formed so as to extend obliquely toward the spindle rail 1 side.

Next, the operation of the device configured as described above will be described. The tangential belt 3 is driven simultaneously with the driving of the spinning machine stand, and each spindle 2 is driven to rotate. Since the spindle drive section is covered with the front cover 4 and other covers, noise generated from the spindle drive section is reduced.

In the free state, the knee brake 5 is biased clockwise by the weight of the lever 6 in the clockwise direction of FIGS. 2 and 3 (a), and the protrusion 8b engages with the end of the elongated hole 10 to rotate the knee brake 5. The movement is restricted, the intermediate peg 12 is not interfered with, and it is held at the standby position where it does not hinder the pipe changing operation of the pipe changing device (not shown). Therefore, it can be applied to a spinning machine equipped with a pipe changing device without any trouble. Moreover, in this state, FIG.
As shown in (a), the brake shoe 8 is held in a state of being separated from the spindle wave 2a.

When the yarn breakage occurs, the operator operates the knee brake 5 of the weight to stop the rotation of the spindle 2 and after the yarn splicing work, the braking by the knee brake 5 is released. When braking the spindle 2, the operator presses the operating portion 6a of the lever 6 with the knee to move the lever 6 to the position shown in FIG.
Rotate counterclockwise in (a). When the lever 6 rotates, the brake shoe 8 rotates together with the lever 6,
As shown in (b), the pair of abutting portions 8c of the brake shoe 8 abut on the spindle wave 2a in a state of applying a pressing force in a direction parallel to the longitudinal direction of the spindle rail 1.

Since the direction of the pressing force is parallel to the running direction of the tangential belt 3, even if the spindle 2 is bent due to the large pressing force of the brake shoe 8, the spindle 2
Is bent in a plane parallel to the traveling direction of the tangential belt 3, so that no force acts on the tangential belt 3 in a direction intersecting with the tangential belt 3. Therefore, the tangential belt 3
Does not act on or away from the spindle row, and the contact pressure between the adjacent spindle 2 and tangential belt 3 does not change. That is, even when a large braking force is applied to the spindle and the spindle is slightly bent, unlike the conventional knee brake, it is possible to prevent changes in the rotation speed of the spindles of the adjacent weights and unevenness in yarn quality.

When the pressing operation of the lever 6 by the knee is released, the lever 6 is rotated clockwise from the state of FIG. 3B by its own weight, and the projection 8b comes into contact with the end of the elongated hole 10 (see FIG. It returns to the standby position shown in a).

The position of the operating portion 6a is the spindle support portion 1a.
It is located below and is equivalent to the knee brake in the case of the chin pulley drive type spinning machine, and the operability is improved as compared with the knee brake in the case of the conventional tangential belt drive type spinning machine. Moreover, although the lever 6 is formed of a steel plate in this embodiment, it is not a mere flat plate shape, but extends from the front cover 4 obliquely toward the lower front and the operation portion is formed at the lower portion thereof, so that the knee 6 Operability is further improved.

Further, in this embodiment, since the operating portion 6a is formed so as to extend obliquely toward the spindle rail 1 side, the lever 6 is moved by pushing the operating portion 6a with the knee and pushing it diagonally forward. The spindle rail 1 is smoothly rotated in a plane parallel to the longitudinal direction, and the operability is improved as compared with the operation of opening the knee right sideways.

Further, in this embodiment, the lever 6 is arranged outside the front cover 4, the brake shoe 8 is arranged inside the front cover 4, and both are arranged on the front cover 4.
Is integrally rotatably connected via a shaft portion 8a that is rotatably supported by the. Therefore, unlike the structure in which the lever 6 rotates in a direction orthogonal to the longitudinal direction of the spindle rail 1, the lever 6 rotates without interfering with the front cover 4 even if the front cover 4 is not provided with an escape portion. To be done. Therefore, it is not necessary to provide an escape portion that may reduce the noise prevention effect.

The lever 6 is attached to and detached from the spindle rail 1 integrally with the front cover 4. Therefore,
The knee brake 5 is attached to the front cover 4 at another position, and the front cover 4 to which the knee brake 5 is attached is attached to the spindle rail 1 so that the knee brake 5 is placed at a position corresponding to each spindle 2. It can be installed and the assembling work becomes easy. Further, when performing maintenance work on the spindle drive unit, the knee brake 5 can be removed at the same time by removing the front cover 4, so that the work is facilitated.

(Second Embodiment) Next, a second embodiment will be described with reference to FIGS. In this embodiment, the structure of the brake shoe and the mounting position with respect to the front cover 4 are different from those in the previous embodiment. The same parts are denoted by the same reference numerals, and detailed description is omitted.

The support hole 9 formed in the front cover 4 is formed at a position corresponding to the center of the spindle warb 2a, and the elongated hole 10 is formed above it. The brake shoe 13 is formed with a shaft portion 13a as a shaft that fits into the support hole 9 at the center of the first surface of the cylindrical body, and a projection 13b that is loosely fitted into the elongated hole 10 is formed above the shaft portion 13a. ing.
On the side opposite to the shaft portion 13a, a pair of abutting portions 1 extending in parallel with each other with a space slightly larger than the diameter of the spindle warb 2a.
3c is formed. The lever 6 is fixed to the shaft portion 13a with the screw 7.

In this embodiment, when the lever 6 is rotated counterclockwise in FIG. 5A from the standby position shown in FIGS. 5A and 6A, the brake shoe 13 moves the shaft portion 13a. When rotated about the center, as shown in FIGS. 5 (b) and 6 (b), the pair of abutting portions 13c apply a pressing force to the spindle warb 2a in a direction parallel to the longitudinal direction of the spindle rail 1. Abut in the state. That is, since a force of the same magnitude is applied to the spindle wave 2a from both sides thereof, a larger braking force can be obtained as compared with the above embodiment. Since the direction of the pressing force is parallel to the traveling direction of the tangential belt 3, even when a large braking force is applied to the spindle 2 and the spindle 2 is slightly bent as in the above embodiment, it is different from the conventional knee brake. It is possible to prevent the rotation speed of the spindle of the adjacent weight from changing and the yarn quality from being uneven. Further, since both abutting portions 13c apply pressing forces to the spindle wave 2a in opposite directions, the force acting to bend the spindle 2 becomes smaller than that in the above embodiment. Other actions and effects are similar to those of the above-mentioned embodiment.

The present invention is not limited to the above embodiment, but may be embodied as follows, for example. (1) Instead of attaching the knee brake 5 to the front cover 4, it may be attached to the spindle rail 1. For example, as shown in FIG. 7A, a plurality of fitting holes 14 are formed in the upper portion of the lever 6, and a protrusion that fits into the fitting hole 14 is formed in the brake shoe 8 so that the protrusion fits. Dowel 14
The knee shoe 5 is constructed by fixing the brake shoe 8 to the lever 6 with the screw 15 in the state of being fitted in. And
The lever 6 is rotatably supported with respect to the spindle rail 1 by a screw 16 which serves as an axis. Also, lever 6
The pin 17 for restricting rotation of the pin 17 from the standby position where it does not interfere with the intermediate peg 12 to the intermediate peg 12 side.
As shown in, the spindle rail 1 is fixed so as to project from the front end. In this case, only the front cover 4 can be attached to and detached from the spindle rail 1 while the knee brake 5 is attached to the spindle rail 1. Therefore, the braking force of the knee brake 5 can be easily adjusted, and the front cover 4 can be easily attached / detached and stored when performing maintenance work on the spindle drive portion and the like that is unrelated to the knee brake 5.

A brake shoe 1 similar to that of the second embodiment.
The lever 6 provided with 3 may be rotatably attached to the spindle rail 1 in the same manner. (2) In a spinning machine that performs pipe replacement by a pipe replacement device that does not use the intermediate peg 12, the knee brake 5 is arranged so that the lever 6 extends straight downward at a position corresponding to the spindle 2 when viewed from the front. You may.

(3) In the case of the spinning machine provided with the intermediate peg 12, at least the portion of the lever 6 located below the spindle support portion 1a of the spindle rail 1 passes through the rotation center of the lever 6 and the spindle rail 1 The shape is not particularly limited as long as it is provided so as to extend obliquely downward so as to intersect with a plane orthogonal to. For example, the shape may be such that the portion positioned below the spindle support portion 1a is bent and continuous.

(4) The material of the lever 6 is not limited to the plate material,
A thick material or a rod-shaped member may be used. Further, instead of bending the operation portion 6a, an operation portion made of synthetic resin may be attached to the lever.

Inventions other than those described in the claims that can be grasped from the embodiments and the modifications will be described below together with their effects. (1) In the invention described in any one of claims 1 to 5, a pair of abutting portions that extend in parallel to a direction orthogonal to the longitudinal direction of the spindle rail are provided as braking portions with an interval slightly larger than the diameter of the spindle warb. . In this case, the braking force becomes larger and the force acting to bend the spindle becomes smaller than that in the structure in which the pressing force is applied to the spindle wove from one direction.

[0046]

As described in detail above, claims 1 to 5 are provided.
According to the invention described in (1), the knee position during braking operation is equivalent to the knee brake in the case of the chin pulley drive type spinning machine, and the operability is better than that of the knee brake of the conventional tangential belt drive type spinning machine. improves. Further, even if the spindle bends due to the pressing force acting on the spindle during braking, it does not adversely affect the contact pressure between the adjacent spindle and the tangential belt, and it is possible to prevent unevenness in yarn quality. Therefore, when increasing the braking force corresponding to the case where the rotation speed of the spindle is further increased, it is possible to reduce the consideration of the bending of the spindle.

According to the second aspect of the present invention, even when the present invention is applied to a spinning machine in which an intermediate peg is arranged on the front side of each spindle, the lever does not hinder the pipe replacement work.
In the invention according to claim 3, the operability by the knee is improved.

In the invention described in claims 4 and 5,
The lever can be rotated without hindering the attachment of the cover that covers the spindle drive unit. And claim 4
In the invention described in (1), since the spindle braking device is attached to and detached from the spindle rail together with the cover, the spindle braking device can be assembled to the cover at another place, which facilitates the assembly.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a first embodiment.

FIG. 2 is a partial front view.

FIG. 3A is a sectional view of a knee brake arranged at a standby position, and FIG. 3B is a sectional view of a knee brake arranged at a braking position.

FIG. 4A is a partially cutaway plan view of a knee brake arranged at a standby position, and FIG. 4B is a partially cutaway plan view of a knee brake arranged at a braking position.

5A and 5B show a second embodiment, FIG. 5A is a sectional view of a knee brake arranged in a standby position, and FIG. 5B is a sectional view of a knee brake arranged in a braking position.

FIG. 6A is a partially cutaway plan view of the knee brake arranged at the standby position, and FIG. 6B is a partially cutaway plan view of the knee brake arranged at the braking position.

FIG. 7 (a) is a partially cutaway side view of a modified knee brake, and FIG. 7 (b) is a front view.

FIG. 8 is a side view showing a conventional device.

FIG. 9 is a perspective view showing another conventional device.

FIG. 10 shows another conventional device, in which (a) is a partially cutaway side view and (b) is a plan sectional view.

[Explanation of symbols]

1 ... Spindle rail, 1a ... Spindle support, 2 ...
Spindle, 2a ... Spindle warb, 3 ... Tangent belt, 4 ... Front cover as a cover, 5 ...
Knee brake, 6 ... Lever, 6a ... Operating part, 8, 13 ...
Brake shoes as braking portions, 8a, 13a ... Shaft portions as shafts, 8c, 13c ... Abutting portions, 12 ... Intermediate pegs,
16 ... A screw as a shaft.

Claims (5)

[Claims] 1. In a spinning machine that drives a spindle by a tangential belt drive system, for each spindle, a lever that has a braking portion that can come into contact with a spindle warb and that can be operated by a knee is provided with a lever operating portion. A spindle braking device for a spinning machine, which is formed so as to extend below a spindle support portion of a spindle rail, and is rotatable about a shaft extending in a direction orthogonal to the longitudinal direction of the spindle rail and horizontally. 2. The spinning machine is provided with an intermediate peg on the front side corresponding to each spindle for temporarily inserting an empty bobbin at the time of pipe replacement work, and at least the spindle rail so that the lever does not interfere with the intermediate peg. 2. The spindle braking device for a spinning machine according to claim 1, wherein a portion located below the spindle support portion is provided so as to extend obliquely downward so as to intersect a plane passing through the shaft and orthogonal to the spindle rail. 3. The lever is formed of a plate material, and the operating portion is formed in a lower portion of the lever so as to extend obliquely toward the spindle rail side.
Spindle braking device according to item 1. 4. The lever covers at least the front side of the spindle drive unit while extending along the spindle rail, and is arranged outside a detachable cover, and the braking unit is arranged inside the cover. A spindle braking device for a spinning machine according to any one of claims 1 to 3, wherein the spindle braking device is supported integrally with a lever via a shaft supported by a cover. 5. The lever is formed integrally with a braking unit and is rotatably supported with respect to a spindle rail, and a cover for covering the spindle driving unit is attached to the spindle rail in a state of covering an upper portion of the lever. Claim 1
A spindle braking device for a spinning machine according to claim 3.