JP2019173215A - Pot spinning machine - Google Patents

Abstract

To provide a pot spinning machine capable of preventing breakage of a component when winding-up of a yarn around a yarn guide tube is caused.SOLUTION: A pot spinning machine comprises: a pot 1 which has a downward opening 1a and rotates; a yarn guide tube 5 which is inserted into the pot 1 via a fitting hole 1c formed on an upper portion of the pot 1 and guides a yarn 4 into the pot 1; and a yarn guide rail 6 which holds the yarn guide tube 5 and is movable in an elevating direction D. The yarn guide tube 5 is held on the yarn guide rail 6 via a yarn guide holder 7, and a holding force P1 of the yarn guide holder 7 is smaller than a resistance force P2 applied to the yarn guide tube 5 by the contact of a yarn portion Y formed by the yarn 4 twining around the yarn guide tube 5 with any non-lifting member. As a result, even when winding-up of the yarn 4 around the yarn guide tube is caused, a force when the yarn 4 wound around the yarn guide tube 5 comes into contact with another component can be reduced.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a pot spinning machine.

  A pot spinning machine using a cylindrical pot is known as one of spinning machines. In the pot spinning machine, the pot is rotated at a predetermined number of revolutions, and the yarn stretched to a predetermined fineness is guided into the pot through a yarn introduction tube, whereby the yarn is wound around the inner wall of the pot to form a cake. . When the formation of the cake is completed, the yarn is cut upstream from the yarn introduction tube, and then the bobbin is inserted into the pot, and the yarn is wound back from the inner wall of the pot to the bobbin.

  In the conventional pot spinning machine, as shown in FIG. 7B, while the yarn 104 is wound around the inner wall of the pot 101 and the cake C is formed as shown in FIG. The thread 104 may be wound around the tube 105. This phenomenon is called “winding up of the yarn introduction tube”. When the yarn 104 is wound around the yarn introduction tube 105, a yarn winding portion Y is formed outside the yarn introduction tube 105. Therefore, when the yarn introduction tube 5 is moved in order to avoid contact between the yarn introduction tube 105 and the bobbin when the bobbin is inserted into the pot after the cake is formed, as shown in FIG. There is a possibility that the winding portion Y of the thread wound around the tube 105 may come into contact with the rotating pot 101. When the yarn winding portion Y comes into contact with the pot 101, there is a possibility that the parts such as the yarn introduction pipe 105 may be bent.

  Therefore, in the spinning machine described in Patent Document 1, air is jetted from the leading end of the yarn introduction tube to control the airflow in the vicinity of the leading end of the yarn introduction tube, thereby preventing the yarn from winding up on the yarn introduction tube. .

Japanese Patent Publication No. 26-003129

  However, even when the airflow in the vicinity of the leading end portion of the yarn introduction tube is controlled as in the spinning machine of Patent Document 1, it is not possible to completely prevent the yarn from winding up the yarn introduction tube.

  An object of the present invention is to provide a pot spinning machine capable of preventing breakage of parts when a yarn guide pipe is rolled up.

In order to solve the above-described problems, a pot spinning machine according to the present invention has a downward opening, is inserted into the pot through a rotating pot, and a mounting hole formed in the upper part of the pot. A yarn introduction tube that guides the yarn inside the yarn guide tube, and a yarn introduction tube rail that holds the yarn introduction tube and is movable in the up-and-down direction. The yarn introduction tube is connected to the yarn introduction tube rail via the yarn introduction tube holder. The holding force of the yarn introduction tube holder is smaller than the resistance force applied to the yarn introduction tube when the winding portion formed by winding the yarn around the yarn introduction tube comes into contact with the non-elevating member.
As a result, even when the yarn is wound around the yarn introduction tube, the force when the yarn wound around the yarn introduction tube comes into contact with other components can be alleviated and damage to the components can be prevented.

  Further, the yarn introduction tube rail of the pot spinning machine according to the present invention may hold the yarn introduction tube by a frictional force generated between the yarn introduction tube and the yarn introduction tube holder.

  Further, the yarn introduction tube of the pot spinning machine according to the present invention has a concave portion, the yarn introduction tube holder has a convex portion engageable with the concave portion of the yarn introduction tube, and the yarn introduction tube rail is formed of the yarn introduction tube. The yarn introduction tube may be held by engaging the concave portion with the convex portion of the yarn introduction tube holder.

  Moreover, you may provide the yarn introduction pipe | tube sensor which detects that the yarn introduction pipe | tube is hold | maintained at the yarn introduction pipe rail.

  Further, a non-rotating portion that does not rotate with respect to the yarn introduction tube is provided between the rotating pot and the yarn introduction tube, and the yarn introduction tube is wound with the yarn wound around the yarn introduction tube by winding up the yarn introduction tube. When the yarn introduction tube is moved upward by the rail, the yarn wound around the yarn introduction tube may come into contact with the non-rotating portion.

  Further, the non-rotating portion is a cylindrical yarn guide guide provided between the pot and the yarn guide tube, and the yarn guide tube is accommodated in the yarn guide guide so as to be movable in the up-and-down direction, A flange is formed at the end of the guide tube, and when the guide tube is moved up by the guide tube rail while the yarn is wound around the guide tube by winding up the guide tube, the guide tube is The wound yarn may contact the flange of the yarn introduction tube guide.

  According to the pot spinning machine according to the present invention, it is possible to prevent the parts from being damaged when the yarn is rolled up.

It is the schematic which shows the whole structure of the spindle part of the pot spinning machine which concerns on embodiment of this invention. It is an expanded sectional view which shows the lower end part vicinity of the yarn guide guide of the pot spinning machine shown in FIG. It is an expanded sectional view of the contact location of the yarn introduction tube holder and yarn introduction tube of the pot spinning machine shown in FIG. It is a flowchart which shows the flow of operation | movement of the pot spinning machine shown in FIG. FIGS. 5A to 5C are diagrams illustrating a process in which the yarn introduction tube moves relative to the yarn introduction tube rail and is detached from the yarn introduction tube rail. It is an expanded sectional view of the engaging location of the yarn introduction pipe holder and the yarn introduction pipe of the pot spinning machine concerning another embodiment of this invention. It is a figure which shows the process in which the winding of a thread | yarn generate | occur | produces in the yarn introduction tube of the conventional pot spinning machine. FIG. 7 (a) is a view showing a state where a cake is formed on the inner wall of the pot, and FIG. 7 (b) is a view showing a state in which the yarn guide pipe rolls up after the formation of the cake. FIG.7 (c) is a figure which shows the state which the yarn introduction tube of the state in which the yarn was wound moved upwards.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
In FIG. 1, the schematic of the spindle part 100 of a pot spinning machine is shown. Note that a plurality of spindle parts 100 of the pot spinning machine are provided side by side on a machine base (not shown).
As shown in FIG. 1, a spindle part 100 of a pot spinning machine has a substantially cylindrical pot 1. The pot 1 has a downward opening 1a. A bobbin 12 is provided under the pot 1. The bobbin 12 can be moved up and down in the up-and-down direction D, that is, the up-and-down direction. When the bobbin 12 rises to the uppermost part, the bobbin 12 is stored in the pot 1.

  A pot support 2 is attached on the pot 1. A bearing 2 a is provided inside the pot support 2. Further, a yarn guide 8 is provided in a hollow portion inside the bearing 2a. The yarn introduction tube guide 8 is provided so as not to contact the bearing 2a. The yarn introduction tube guide 8 has a substantially cylindrical shape, and flanges 8a and 8b are formed on the upper end and the lower end of the yarn introduction tube guide 8, respectively. As shown in FIG. 2, the flange 8 b at the lower end of the yarn introduction tube guide 8 is disposed below the lower end of the bearing 2 a of the pot support 2 and the upper surface 1 b of the internal space of the pot 1. The pot 1 is rotatable relative to the yarn guide guide 8 via the bearing 2a. A yarn introduction tube 5 for guiding the yarn 4 to the inside of the pot 1 is accommodated in the yarn introduction tube guide 8 so as to be movable in the up-and-down direction D. Since the bearing 2a and the yarn guide guide 8 are inserted into the pot 1 through the mounting holes 1c formed in the upper portion of the pot 1, the bearing 2a and the guide tube guide 8 are connected to the yarn guide. It is provided between the tube 5 and the pot 1. Further, as shown in FIG. 1, the lower end of the yarn introduction tube 5 protrudes into the pot 1. A yarn discharge port 5 b for discharging the yarn 4 is formed at the lower end of the yarn introduction tube 5. Furthermore, the yarn introduction tube 5 extends from the upper end of the pot support 2.

  A guide holder rail 15 is provided on the pot support 2. A guide holder 9 is attached to the guide holder rail 15. The flange 8 a at the upper end of the yarn introduction tube guide 8 is engaged with the guide holder 9, whereby the yarn introduction tube guide 8 is supported by the guide holder 9.

  Further, the upper end portion of the yarn introduction tube 5 is held by the yarn introduction tube rail 6. A yarn introduction tube holding hole 6a through which the yarn introduction tube 5 is inserted is formed in the yarn introduction tube rail 6. Further, as shown in FIG. 3, there is a gap between the yarn introduction tube 5 and the yarn introduction tube holding hole 6a. An annular yarn guide tube holder 7 is attached to the lower surface of the yarn guide rail 6 along the yarn guide tube holding hole 6a. The yarn introduction tube holder 7 is made of resin. The yarn introduction tube holder 7 holds the yarn introduction tube 5 by the holding force P1. The holding force P <b> 1 is a frictional force generated between the yarn introduction tube 5 and the yarn introduction tube holder 7. In other words, the yarn introduction tube rail 6 holds the yarn introduction tube 5 with the holding force P <b> 1 via the yarn introduction tube holder 7. In addition, when a force larger than the holding force P <b> 1 is applied to the yarn introduction tube 5, the yarn introduction tube 5 can move in the ascending / descending direction D relative to the yarn introduction tube rail 6. Further, as shown in FIG. 1, the yarn introduction rail 6 is movable in the up and down direction D while holding the yarn introduction tube 5. Further, the upper limit of the height of the upper end 5a of the yarn introduction pipe 5 when the yarn introduction pipe 5 rises with the rise of the yarn introduction pipe rail 6 is defined as the upper limit height H.

  A draft device 3 is provided on the upper side of the yarn guide rail 6 to stretch the yarn to a predetermined thickness. Further, a yarn introduction pipe sensor 10 is provided between the draft device 3 and the yarn introduction pipe rail 6. The yarn introduction tube sensor 10 is a reflective optical sensor. The yarn introduction tube sensor 10 is provided such that the optical axis 10 a is positioned lower than the upper limit height H of the upper end 5 a of the yarn introduction tube 5.

In addition, a wagon type bobbin removing device 11 that is movable in a direction in which the spindle parts 100 of the pot spinning machine are arranged in parallel is provided on a machine base in which the spindle parts 100 of a plurality of pot spinning machines are provided side by side. The bobbin removing device 11 can grasp and remove the bobbin 12 of the spindle part 100 of each pot spinning machine by the robot arm 11a.
The bobbin removing device 11 constitutes a bobbin retracting mechanism.

Next, the operation of the spindle part 100 of the pot spinning machine will be described with reference to FIG.
First, as shown in step S <b> 1 of FIG. 4, a cake is formed on the inner wall of the pot 1. Specifically, as shown in FIG. 1, with the pot 1 rotating at a high speed, the yarn 4 is guided into the pot 1 by the yarn introduction tube 5, and the yarn discharge port 5 b at the lower end of the yarn introduction tube 5. Thread 4 is discharged. Since the centrifugal force generated by the rotation of the pot 1 acts on the yarn 4, the yarn 4 is pressed against the inner wall of the pot 1 to form a cake. At this time, the yarn introduction pipe rail 6 reciprocates in the ascending / descending direction D, whereby the yarn 4 is discharged while moving the position of the yarn discharge port 5b at the lower end of the yarn introduction pipe 5 to form a cake.
The pot 1 is rotating at a high speed, but the yarn introduction guide 8 is stationary. Here, the yarn introduction tube guide 8 constitutes a non-rotating part.

  Next, as shown in step S2 of FIG. 4, the yarn guide rail 6 is raised after the cake is formed. Then, as shown in step S3, it is determined whether or not the yarn introduction tube 5 is detected by the yarn introduction tube sensor 10. When the yarn introduction pipe sensor 10 detects that the yarn introduction pipe 5 is raised together with the yarn introduction pipe rail 6, the yarn introduction pipe 5 is held by the yarn introduction pipe rail 6. It is determined that the yarn guide tube is not rolled up. Then, the operation of the spindle part 100 of the pot spinning machine proceeds to a step of rewinding the yarn 4 around the bobbin 12 (step S4) as usual.

  On the other hand, when the yarn introduction tube 5 is not detected by the yarn introduction tube sensor 10 in step S3, it is determined that the yarn introduction of the yarn 4 has occurred. Specifically, as shown in FIG. 5A, when the yarn 4 is wound around the yarn introduction tube 5, a yarn winding portion Y is formed on the outer periphery of the yarn introduction tube 5. Then, as shown in FIG. 5B, when the yarn introduction tube rail 6 and the yarn introduction tube 5 are raised, the yarn winding portion Y comes into contact with the flange 8b at the lower end of the yarn introduction tube guide 8, and the yarn introduction tube 5 Generates a downward resistance force P2. When the resistance force P2 becomes larger than the holding force P1 of the yarn introduction pipe 5 by the yarn introduction pipe rail 6, the upper end of the yarn introduction pipe 5 is connected to the yarn introduction pipe of the yarn introduction pipe rail 6 as shown in FIG. It moves downward relative to the holding hole 6a and comes off. Therefore, when the yarn 4 is wound around the yarn introduction pipe 5, the yarn introduction pipe sensor 10 provided on the upper side of the yarn introduction pipe rail 6 cannot detect the presence of the yarn introduction pipe 5. That is, the yarn introduction pipe sensor 10 detects that the yarn introduction pipe 5 is not held by the yarn introduction pipe rail 6.

  As described above, when the yarn 4 is rolled up, the bobbin removing device 11 grips the bobbin 12 with the robot arm 11a and removes it as shown in step S5 in FIG.

As described above, in the pot spinning machine according to this embodiment, the holding force P1 for holding the yarn introduction pipe 5 by the yarn introduction pipe holder 7 provided on the yarn introduction pipe rail 6 is the winding portion formed on the yarn introduction pipe 5. Y is smaller than the resistance force P2 applied to the yarn introduction tube 5 by contacting the non-elevating member. Accordingly, when the resistance force P <b> 2 is applied to the yarn introduction pipe 5, the yarn introduction pipe 5 can be moved relative to the yarn introduction pipe rail 6 in the ascending / descending direction D, so that the yarn introduction pipe 5 is formed. The force generated by the contact between the wound portion Y and the other member is alleviated. Therefore, even when the yarn introduction pipe 5 rolls up in the yarn introduction pipe 5, the parts of the spindle part 100 of the pot spinning machine are prevented from being damaged.
In this embodiment, the non-elevating members are the pot 1, the bearing 2a, and the yarn guide guide 8.

  The yarn introduction tube 5 is held on the yarn introduction tube rail 6 by a frictional force generated between the yarn introduction tube 5 and the yarn introduction tube holder 7. As a result, while holding the yarn introduction pipe 5 with a simple structure, when the resistance force P2 exceeding a predetermined value is applied to the yarn introduction pipe 5, the yarn introduction pipe 5 is easily relative to the yarn introduction pipe rail 6. It is possible to move in the up and down direction D.

  Further, the yarn introduction pipe sensor 10 detects whether or not the yarn introduction pipe 5 is held by the yarn introduction pipe rail 6. Accordingly, if it is detected that the yarn introduction pipe 5 moves downward relative to the yarn introduction pipe rail 6 and is detached from the yarn introduction pipe rail 6, the yarn introduction of the yarn 4 to the yarn introduction pipe 5 is detected. It can be determined that the pipe is rolled up.

  Further, when the yarn introduction of the yarn 4 occurs in the yarn introduction tube 5, the yarn winding portion Y of the yarn introduction tube 5 comes into contact with the flange 8b at the lower end of the yarn introduction tube guide 8, which is a non-rotating portion. Therefore, the force by contact can be reduced as compared with the case where the yarn winding portion Y is in contact with a rotating member such as the pot 1.

Further, when it is determined that the yarn 4 is rolled up in the yarn introduction tube 5, the yarn introduction tube 5 can move relative to the yarn introduction tube rail 6 in the up-and-down direction D. For this reason, there is a possibility that the yarn introduction tube 5 and the bobbin 12 come into contact with each other. Therefore, the bobbin removing device 11 removes the bobbin 12 to prevent contact between the yarn introduction tube 5 and the bobbin 12.
In addition, after the yarn introduction pipe sensor 10 detects that the yarn introduction pipe 5 has moved downward relative to the yarn introduction pipe rail 6 and has come off from the yarn introduction pipe rail 6, an alarm is displayed. The bobbin 12 may be removed manually. Further, the bobbin 12 can be prevented from coming into contact with the bobbin 12 by removing the bobbin 12 sideways and retracting it.

In this embodiment, the yarn introduction tube 5 is held on the yarn introduction tube rail 6 by the friction force generated between the yarn introduction tube holder 7 and the method for holding the yarn introduction tube 5 is the same. It is not limited.
For example, as shown in FIG. 6, a concave portion 13 is formed on the outer periphery of the yarn introduction tube 5, and the yarn introduction tube 5 is connected to the yarn introduction tube rail 6 by engagement with the convex portion 14 of the yarn introduction tube holder 7. It may be held. Further, by forming a convex portion on the outer periphery of the yarn introduction tube 5 and forming a concave portion on the yarn introduction tube holder 7, the engagement between the convex portion of the yarn introduction tube 5 and the concave portion of the yarn introduction tube holder 7 is performed. The yarn introduction pipe 5 may be held with respect to the yarn pipe rail 6.

Further, the holding force P1 for holding the yarn introduction tube 5 on the yarn introduction tube rail 6 may be a magnetic force of a magnet or an elastic force of a spring member.
Further, when the yarn introduction tube holder is a spring member, the yarn introduction tube sensor detects the movement of the yarn introduction tube holder, and is the yarn introduction tube 5 detached from the yarn introduction tube rail 6 and moving downward? It may be determined whether or not.

Further, the yarn introduction tube sensor 10 is not limited to the reflection type optical sensor, and may be a transmission type optical sensor or a contact type sensor.
Further, the yarn introduction pipe sensor 10 may be directly attached in the vicinity of the yarn introduction pipe holding hole 16 a of the yarn introduction pipe rail 16.

Further, the yarn winding portion Y of the yarn introduction pipe 5 may be in direct contact with the lower end of the yarn introduction pipe guide 8 without the flange without providing the flange 8b at the lower end of the yarn introduction pipe guide 8.
Further, when the bearing 2a has an inner ring in a stationary state and an outer ring that rotates relative to the inner ring, the non-rotating portion with which the yarn winding portion Y of the yarn introduction tube 5 comes into contact is the inner ring of the bearing 2a. It may be.
Even when the yarn introduction tube guide 8 is rotating together with the pot 1, the yarn introduction tube 5 moves downward relative to the yarn introduction tube rail 6, so that the yarn introduction tube 5. The force due to the contact between the yarn winding portion Y and the yarn guide guide 8 is sufficiently relaxed.

  5C, the yarn introduction tube 5 is separated from the yarn introduction tube rail 6. However, the present invention is not limited to this, and the yarn introduction tube 5 does not come off from the yarn introduction tube rail 6 and is relatively separated. Therefore, the force caused by the contact between the yarn winding portion Y and the yarn introduction tube guide 8 is alleviated only by moving downward.

  1 Pot (non-lifting member), 1a opening, 1c mounting hole, 2a bearing (non-lifting member), 4 threads, 5 yarn introduction tube, 6 yarn introduction tube rail, 7 yarn introduction tube holder, 8 yarn introduction tube guide (non Rotating part, non-elevating member), 8b flange, 10 yarn guide tube sensor, spindle part of 100 pot spinning machine, D elevating direction, P1 holding force, P2 resistance force, Y winding part.

Claims (6)

A rotating pot having a downward opening and rotating;
A yarn introduction tube that is inserted into the pot through an attachment hole formed in the upper portion of the pot and guides the yarn into the pot;
While holding the yarn introduction pipe, comprising a yarn introduction pipe rail movable in the up and down direction,
The yarn introduction pipe is held by the yarn introduction pipe rail via a yarn introduction pipe holder,
A pot spinning machine in which the holding force of the yarn introduction tube holder is smaller than the resistance force applied to the yarn introduction tube when a winding portion formed by winding a yarn around the yarn introduction tube comes into contact with a non-lifting member. .   The pot spinning machine according to claim 1, wherein the yarn introduction tube rail holds the yarn introduction tube by a frictional force generated between the yarn introduction tube and the yarn introduction tube holder. The yarn introduction tube has a recess;
The yarn introduction tube holder has a convex portion engageable with the concave portion of the yarn introduction tube,
2. The pot spinning machine according to claim 1, wherein the yarn introduction tube rail holds the yarn introduction tube by engaging the concave portion of the yarn introduction tube with the convex portion of the yarn introduction tube holder.   The pot spinning machine as described in any one of Claims 1-3 provided with the yarn introduction pipe | tube sensor which detects that the said yarn introduction pipe | tube is hold | maintained at the said yarn introduction pipe rail. A non-rotating portion that does not rotate with respect to the yarn introduction tube is provided between the rotating pot and the yarn introduction tube,
When the yarn introduction pipe rail is moved upward by the yarn introduction pipe rail while the yarn is wound around the yarn introduction pipe by winding up the yarn introduction pipe, the yarn wound around the yarn introduction pipe contacts the non-rotating portion. The pot spinning machine according to any one of claims 1 to 4. The non-rotating portion is a cylindrical yarn guide guide provided between the pot and the yarn guide pipe,
Inside the yarn introduction tube guide, the yarn introduction tube is accommodated so as to be movable in the elevation direction,
A flange is formed at the end of the yarn introduction tube guide,
When the yarn introduction tube rail is moved upward by the yarn introduction tube rail in a state in which the winding portion is formed by winding the yarn around the yarn introduction tube, the winding portion becomes the flange of the yarn introduction tube guide. The pot spinning machine according to claim 5, which is in contact with

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