JPH0621387B2 - Bobbin insertion method in roving frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a bobbin insertion method in a roving frame using an upper-support type flyer.

(Prior Art) Generally, in a roving machine using an upper-support-type flyer, a large number of bobbin drive shafts (bobbin wheels) are projectingly arranged on the upper surface of a bobbin rail, and the bobbins are fitted to the upper ends of the respective bobbin drive shafts. By supporting and rotating the bobbin drive shaft in the winding position and raising and lowering the bobbin drive shaft, the roving yarns are simultaneously wound around the outer periphery of the bobbin. In such a roving machine, the bobbin is securely fitted and supported without floating at a fixed position on the upper end of the bobbin drive shaft, and the shaft centers of both are not exactly in alignment with each other during the winding operation described above. The rotation of the bobbin drive shaft is not reliably transmitted to the bobbin, which causes a problem that the normal winding operation is hindered.

Conventionally, two protrusions are formed on the peripheral surface of a bobbin drive shaft of a roving frame with a phase difference of 180 degrees, and the bobbin has engagement recesses on the lower end surface thereof which are engageable with the protrusions. It was paired. Then, in order to prevent the above-mentioned inconvenience caused by the improper fitting of the bobbin to the bobbin drive shaft, the worker rotates the bobbin around the bobbin drive shaft when the bobbin is mounted so that the engagement concave portion of the bobbin protrudes from the bobbin drive shaft. The bobbin mounting operation takes time and the operating efficiency of the machine base is reduced.

In order to eliminate this drawback, in Japanese Utility Model Laid-Open No. 58-67857 published on May 9, 1983, a phase difference of 180 degrees is provided at two locations on the outer circumference of the bobbin drive shaft on the entire inner circumference of the lower bobbin. It has been proposed to form a saw-toothed groove that can be fitted with a tapered projection having a sharp tip that is fixed and held. When the bobbin is inserted, the serrated groove is guided by the tapered surface of the projection and the serrated groove is fitted into the projection, so that the bobbin mounting operation is extremely easy. However, as shown in FIG. 12, due to the presence of the horizontal portion 43 between the saw teeth of the saw-toothed groove 42 formed on the bobbin 41, and the fact that there is only one pair of protrusions on the bobbin drive shaft. When the bobbin 41 is inserted in a state where the horizontal portion 43 and the protrusion correspond to each other, the tip of the protrusion contacts the horizontal portion 43, and the serrated groove 42 does not fit into the protrusion automatically. In addition, when the shaft portion slightly protrudes above the portion where the protrusion is formed like the bobbin wheel, the bobbin 41 may fall down,
Alternatively, as shown in FIG. 14, the bobbin 41 may be inserted into and held by the bobbin wheel 44 in a tilted state.
When the number of the protrusions 44a of the bobbin wheel 44 is set to three or more in order to prevent the bobbin from tipping over, even if the bottom surface of the bobbin 41 rides on the protrusion 44a of the bobbin wheel 44, it is upright as shown in FIG. Be kept in a state. But,
The bobbin 41 is likely to tilt due to the impact when the bobbin 41 is disengaged from the pipe replacement arm 45 of the pipe replacement machine or when the bobbin rail 46 is moved upward. When the bobbin rail 46 is raised to the yarn winding position while the bobbin 41 is inserted with the bobbin wheel 44 being inclined with respect to the bobbin wheel 44, the top of the bobbin 41 collides with the lower end of the spindle 47 of the flyer and the bobbin 41 or There are inconveniences such as breakage of the flyer and difficulty in winding the roving.

(Problems to be Solved by the Invention) The present invention provides a bobbin and a flyer spindle, which may be caused when the bobbin is inserted into the bobbin wheel by an automatic pipe changer, due to a fall of the bobbin or a fitting failure. The present invention solves the problem of breakage of the bobbin or flyer due to the collision.

Configuration of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, in the present invention, the bobbin is suspended from and supported by the pipe replacement arm of the automatic pipe changer at the top flange portion thereof. When the bobbin and bobbin wheel are fitted together by lowering them from above the wheel and detecting the distance between the pipe replacement arm and the top of the bobbin when the pipe replacement arm is lowered to a predetermined position For this, we adopted a method of raising and lowering the tube replacement arm again.

(Operation) In the present invention, when the empty bobbin is inserted into the bobbin wheel, the pipe changer arm of the automatic pipe changer descends from above the bobbin wheel while suspending and supporting the empty bobbin at the top flange portion thereof. Then, the distance between the pipe replacement arm and the top of the bobbin is detected in a state where the pipe replacement arm is lowered below a predetermined position, that is, a position where the bobbin can be reliably fitted into the protrusion of the bobbin wheel. If the bobbin is in contact with the protrusion of the bobbin wheel, that is, if the bobbin is in an improperly fitted state, the distance between the upper surface of the pipe replacement arm and the top of the bobbin is larger than the state in which the bobbin is securely fitted to the bobbin wheel. It is determined whether or not the fitting state with the bobbin wheel is normal. And
In the case of the incorrect fitting state, the pipe replacement arm is moved up and down again.

(Embodiment 1) Hereinafter, a first embodiment in which the present invention is embodied as an intermittent transfer type pipe changer will be described with reference to FIGS. As shown in FIG. 4, the pipe changing machine 1 is intermittently moved along a pair of rails 3 laid in parallel with the roving frame 2 to perform the pipe changing work. The pipe changer 1 is guided up and down by being guided by the cam grooves of a pair of cam plates (not shown) that are moved up and down, and travels along a traveling rail 4 that is installed above the front surface of the roving machine stand 2. An empty bobbin lifter 7 that receives an empty bobbin 6 suspended from the bobbin carrier 5 and lowers it to a lower position, and a full bobbin 8 that is vertically moved along an elevator column (not shown) to replace the empty bobbin 6 of the bobbin carrier 5. And a full bobbin lifter 9 that functions to be installed in the position where the full bobbin 8 is removed, and the full bobbin 8 is taken out from the bobbin rail 10 of the roving frame 2 by moving in the horizontal direction and placed on the full bobbin lifter 9. A pipe changing device including a pipe changing mechanism 12 having a function of removing the empty bobbin 6 from the empty bobbin lifter 7 and inserting the empty bobbin 6 into the bobbin wheel 11 on the bobbin rail 10 is provided.

As shown in FIG. 5, the bobbin wheel 11 has eight protrusions 13 of the same shape on the outer circumference of the bobbin fitting portion over the entire circumference.
Are continuously formed. The protrusion 13 has a triangular columnar shape whose lower portion extends in the vertical direction, and has a sharp taper surface 13 on the upper portion which functions as a guide portion when inserting the bobbin.
a and a pointed portion 13 formed by the tapered surface 13a
b is formed. The bobbins 6 and 8 have flange portions 6a and 8a formed on the tops thereof, and an iron plate 14 is fixed to the lower surfaces thereof as shown in FIG. Further, as shown in FIG. 7, triangular teeth-shaped grooves 15 which can fit with the projections 13 of the bobbin wheel 11 are continuously formed on the inner peripheral surfaces of the lower portions of the bobbins 6 and 8.

The pipe replacement mechanism 12 is configured to move in the front-rear direction (left-right direction in FIG. 4) while the pipe replacement arm 17 attached to the attachment box 16 is held horizontally by using the Scott Russell mechanism. At the same time, the entire pipe changing mechanism 12 is configured to be movable up and down by an operating mechanism (not shown) so that the full bobbin 8 can be pulled out from the bobbin wheel 11 of the bobbin rail 10 or the empty bobbin 6 can be inserted into the bobbin wheel 11. There is.

As shown in FIGS. 1 and 3, a concave portion 19 for drying the flange portions 6a, 8a of the empty bobbin 6 or the full bobbin 8 is formed inside the upper surface of the distal fork fork portion 18 of the pipe replacement arm 17. The concave portion 19 has a taper shape in which an inner peripheral surface 19a thereof extends upward, and the bottom surface thereof has a flange portion 6 of the bobbin.
A plurality of magnets 20 serving as an attracting member for attracting the iron plate 14 fixed to the lower surfaces of the a and 8a are fixed.

A housing recess 21 is formed on the upper surface of one support piece 18a of the fork portion 18 so that one end of the pipe replacement arm 17 in the direction orthogonal to the longitudinal direction is open. A support pin 22 is provided at one end on the same side as the base end of the two-pronged fork portion 18 on the same side as the one support piece 18a, and a proximity switch 23 is provided obliquely below and rearward of the support pin 22. There is. A lever 24 is rotatably supported on the support pin 22 by an iron plate and is rotatably supported. An operating member is housed in the housing recess 21 at its tip and a magnet 25a is fixed to the tip. 25 is fixed. The support pin 22
A torsion spring 26, one end of which is hooked to the lever 24 and the other end of which is hooked to the pipe replacement arm 17, is wound around the outer periphery of the lever and is always fixed to one end of the lever 24 as shown in FIGS. The actuated member 25 thus accommodated is accommodated in the accommodating recess 21, and the other end acting portion 24 a of the lever 24 is held in a state of being arranged in the vicinity of the proximity switch 23.

Next, the pipe replacement work by the apparatus configured as described above will be described. When changing pipes, the pipe changer 1 is the bobbin rail 10
It stops at a predetermined position corresponding to the upper full bobbin 8. In this state, the empty bobbin lifter 7, the full bobbin lifter 9, and the pipe changing mechanism 1
2 is operated and the empty bobbin 6 is hung on the traveling rail 4 and then the empty bobbin 6 is removed from the waiting bobbin carrier 5, and the full bobbin 8 taken out from the bobbin rail 10 is hung on the bobbin carrier 5. Then, the pipe replacement work of inserting the empty bobbin 6 into the bobbin wheel 11 of the bobbin rail 10 is performed.

When the pipe changing mechanism 12 is operated, the pipe changing arm 17 suspends and supports the empty bobbin 6 on the upper surface of the concave portion 19 of the fork 18 as shown in FIG. The bobbin 6 is horizontally moved to the corresponding position. In a state where the empty bobbin 6 is not suspended in the recess 19 of the fork portion 18, the action portion 24a of the lever 24 and the proximity switch 23 do not correspond to each other as shown in FIG. Is held off. On the other hand, when the empty bobbin 6 is suspended and supported on the recess 19, the magnet 25a of the operating member 25 housed in the housing recess 21 is attached to the iron plate 14 fixed to the lower surface of the flange 6a of the empty bobbin 6. The force of attraction works, and the lever 24 is rotated counterclockwise in FIG. 3 around the support pin 22 against the force of the torsion spring 26 to be in the state shown in FIG. 9 (a). At this time, the action portion 24a of the lever 24 corresponds to a part of the proximity switch 23, the proximity switch 23 is turned on, and it is confirmed that the empty bobbin 6 is suspended on the fork 18.

From this state, the pipe replacement arm 17 is moved down and the empty bobbin insertion operation to the bobbin wheel 11 is performed. At this time, the pipe replacement arm 17 securely engages the empty bobbin 6 with the bobbin wheel 11, releases the engagement between the fork portion 18 and the empty bobbin 6, and supports the backward movement of the fork portion 18. It is moved down to a certain height. When the empty bobbin 6 is supported by the bifurcated fork portion 18 with the groove 15 provided on the bottom portion of the empty bobbin 6 and the protrusion 13 of the bobbin wheel 11 corresponding to each other, the pipe replacement arm 17 is moved downward. Along with this, the groove 15 and the projection 13 of the bobbin wheel 11 are securely fitted, and the empty bobbin 6 is fitted and inserted in the bobbin wheel 11 in a vertical state. In this case, when the lowering movement of the pipe replacement arm 17 is completed, the fork portion 18 of the fork 18 and the flange portion 6a of the empty bobbin 6 are
The engagement state with is released, and the flange portion 6a is separated from the upper surface of the fork 18 fork. At this time, the lever 24 is further rotated counterclockwise from the position shown in FIG. 9 (a) by the action of the magnet 25a of the actuating member 25 to the state shown in FIG. 9 (b). The proximity switch 23 is located at a position corresponding to the proximity switch 23.
Is kept on. When the descending movement of the pipe replacement arm 17 is completed while the proximity switch 23 is held in the ON state, the pipe replacement mechanism 12 is actuated based on the detection signal of the descending movement end detecting means (not shown), and the pipe replacement arm 17 is moved to the first position. It is moved backward to the standby position shown in FIG.

On the other hand, when the groove 15 and the protrusion 13 are not in the corresponding state,
As shown in FIG. 9C, the bottom portion of the empty bobbin 6 has the projection 1 of the bobbin wheel 11 during the downward movement of the pipe replacement arm 17.
3 is brought into contact with. When the pipe replacement arm 17 continues to move downward in this state, the fork portion 18 continues to move downward, but the empty bobbin 6 has a bottom portion thereof in contact with the protrusion 13 of the bobbin wheel 11, which hinders the downward movement. Thus, the empty bobbin 6 moves upward relative to the bifurcated fork portion 18. And the magnet 2 attracted to the iron plate 14 of the flange portion 6a
By the action of 5a, the lever 24 is rotated counterclockwise as the pipe replacement arm 17 descends, and when the descending movement of the pipe replacement arm 17 is completed, the state shown in FIG. 9C is obtained. In this state, the action portion 24a of the lever 24 is not in a state corresponding to the proximity switch 23, so that the proximity switch 23 is turned off, and it is confirmed that the empty bobbin 6 is in a poor fitting state with the bobbin wheel 11. . When the proximity switch 23 is turned off, the tube changing mechanism 17 operates to move the tube changing arm 17 up and down again.

When the pipe replacement arm 17 moves upward, the empty bobbin 6 is again suspended and supported by the bifurcated fork portion 18. At this time, since the empty bobbin 6 is not hung in the same state as the previous suspension support position, the positional relationship between the groove 15 of the empty bobbin 6 and the protrusion 13 of the bobbin wheel 11 is lowered during the downward movement. It will be different from when moving. Therefore, in the case of improper fitting, the empty bobbin 6 is vertically inserted onto the bobbin wheel 11 with the groove 15 of the empty bobbin 6 fitted to the protrusion 13 of the bobbin wheel 11 by moving the pipe replacement arm 17 up and down again. .

Second Embodiment Next, a second embodiment will be described with reference to FIGS.
In the above embodiment, the bobbin wheel 11 of the empty bobbin 6
Proximity switch 2 as a means to determine the fitting state
Although 3 and the lever 24 are used, in the apparatus of this embodiment, a photoelectric switch is used to determine the fitted state. That is, one light projector 27 and two light receivers 28a and 28b are arranged in a line on the bottom surface of the recess 19 of the fork 18 fork. Then, the fitting state between the empty bobbin 6 and the bobbin wheel 11 is determined depending on which of the light receivers 28a and 28b receives the light emitted from the light projector 27. When the empty bobbin 6 is completely fitted to the bobbin wheel 11 when the empty bobbin 6 is inserted into the bobbin wheel 11, the light emitter 27 and the light receivers 28a and 28b are arranged as shown by the solid line in FIG. Upper surface of the forked fork portion 18 and the flange portion 6a of the empty bobbin 6
The distance from the lower surface is short, and the light emitted from the light projector 27 is received by one light receiver 28a. On the other hand, when the bottom of the empty bobbin 6 is in contact with the protrusion 13 of the bobbin wheel 11 and is placed on the protrusion 13, as shown by the chain line in FIG. The distance from the lower surface of 6a increases, and the light from the light projector 27 is received by the other light receiver 28b. Therefore, the fitting state of the bobbin and the bobbin wheel 11 is determined by which of the light receivers 28a and 28b receives the light. When the other light receiver 28b receives the light, the tube changing mechanism 12 is operated so as to move the tube changing arm 17 up and down again based on the signal.

The present invention is not limited to the above-described embodiments. For example, in the first embodiment using the proximity switch, the empty bobbin 6 is moved instead of the lever 24 which is rotated together with the movement of the empty bobbin 6. It is also possible to provide an action member that is moved up and down together, or to apply to an all-mass simultaneous type pipe changer instead of the intermittent movement type pipe changer.

As described above in detail, according to the present invention, when the empty bobbin is inserted into the bobbin wheel, the groove provided on the bottom of the empty bobbin does not correspond to the protrusion of the bobbin wheel, and the bottom of the empty bobbin is a protrusion. If the contacting state, that is, the fitting failure state is detected, the empty bobbin insertion work is performed again, and the empty bobbin is always attached to the bobbin wheel with the groove fitted to the protrusion of the bobbin wheel. The bobbin rail and the flyer spindle collide when the bobbin rail is raised to the take-up position, causing damage to the bobbin and flyer and hindering the take-up work. It has the excellent effect of never happening.

[Brief description of drawings]

1 to 9 show a first embodiment embodying the present invention. FIG. 1 is a plan view of a pipe replacement arm, and FIG.
A sectional view taken along the line AA of FIG. 3, FIG. 3 is a side view of the same, FIG. 4 is a schematic side view showing the relationship between a pipe changer and a roving machine stand, and FIG. 5 is a perspective view of a bobbin wheel. FIG. 7 is a bottom cross-sectional view of the bobbin, FIG. 7 is a bottom view of the bobbin, FIG. 8 is a side view showing a state in which the pipe replacement arm has transferred the bobbin above the bobbin wheel, and FIGS. A side view for explaining the action,
FIG. 11 shows a second embodiment, FIG. 10 is a plan view of a main part of a pipe replacement arm, FIG. 11 is a schematic view for explaining the action, and FIG. 12 is a bottom view of a conventional bobbin. FIG. 13 is a partially cutaway side view showing a state in which the bobbin is placed on the protrusion, and FIG. 14 is a side view showing a state in which the bobbin and the bobbin wheel are not fitted properly. Pipe changer 1, empty bobbin 6, flange portion 6a, bobbin wheel 11, pipe change mechanism 12, protrusion 13, iron plate 14, groove 15,
Pipe replacement arm 17, two-pronged fork 18, proximity switch 23,
Lever 24, magnet 25a.

Front Page Continuation (72) Inventor Michio Shibano 2-chome Toyota-cho, Kariya city, Aichi Prefecture Toyota Industries Corporation (56) References JP-A-60-65128 (JP, A)

Claims (1)

[Claims] Claim: What is claimed is: 1. In a roving machine using an upper-support-type flyer, an empty bobbin is suspended from and supported by a pipe-changing arm of an automatic pipe-changing machine at a top flange portion thereof, and is lowered from above a bobbin wheel to change the pipe. When the arm is lowered to the specified position, the fitting state between the bobbin and the bobbin wheel is determined by detecting the distance between the tube replacement arm and the top of the bobbin, and if the fitting is incorrect, the tube replacement arm is moved up and down again. A bobbin insertion method in a roving machine.