JPS639595Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a supporting device for a lifting pillar that raises and lowers a ring rail or lappet in a spinning machine such as a spinning machine or a yarn twisting machine.

Prior Art Generally, in this type of spinning machine, as shown in FIG. 3, a lifting pillar 2 for raising and lowering a ring rail 1 or a lappet (not shown) is a support disposed opposite to each other inside both left and right spindle rails 3. It is supported slidably in the vertical direction by upper and lower metals 5 and 6 attached to the bracket 4, and the lifting pillars 2 on both the left and right sides are connected with holes 7 at both ends into which the small-diameter lower ends 2a fit. They are connected to each other by a bar 8. The upper end is fixed to a lifting bar 9 that swings along the longitudinal direction of the machine (perpendicular to the plane of the paper), and is suspended downward via a guide pulley 10 attached to the support bracket 4. The connecting bar 8 moves up and down as the lifting bar 9 swings via a lifting belt 11 whose lower end 11a is fixed to the connecting bar 8, and the lower end 2a is fixed to the connecting bar 8. Pillar 2 is designed to move up and down.

Problems to be Solved by the Invention In the conventional device described above, the lower end 2a, which is the connection point between the lifting pillar 2 and the connecting bar 8, is located on the same axis as the lifting pillar 2, and is connected to the lifting pillar 2 there. Since the bar 8 moves up and down, the following problem occurs. Lower end 2a
If we pay attention to the center of gravity G of the upper lifting pillar 2 and all the parts that move together with it, we can see that the ring rail 1 etc. attached to the upper part of the lifting pillar 2 is located on the outside of the machine base than the lifting pillar 2. Therefore, the center of gravity G also shifts to the outside of the machine base. Therefore, since the lower end 2a, which is the point of action where the lifting motion is transmitted to the lifting pillar 2, and the center of gravity G are not on the same vertical line, the lifting pillar 2 above the lower end 2a and the entire parts that move together with it If the weight of is W, and the center of gravity G and the eccentricity of the lifting pillar axis are W, a moment load of W x is applied to the lifting pillar 2, and a reaction force to this acts on the upper and lower metals 5 and 6. This will push the lifting pillar 2 inward towards the machine base. Along with that, metal 5,6
The frictional resistance between the lifting pillar 2 and the lifting pillar 2 increases, and the lifting pillar 2 does not slide smoothly, and the lifting pillar 2 vibrates as shown in Figure 4, which shows the relationship between the height of the lifting pillar and time. A stick slip that moves up and down (so-called woodpecker movement)
Particularly at the vertically inverted part where the lifting speed of the lifting pillar 2 becomes zero, the frictional resistance increases due to static friction, so the lifting pillar 2 temporarily stagnates and the shape of the formed tube yarn becomes irregular. It becomes a rule.

The present invention aims to solve the problem of preventing the stick slip phenomenon by reducing the sliding resistance when the lifting pillar 2 is raised and lowered.

Means for Solving the Problem In order to solve the above-mentioned conventional problems, the present invention has a point of application of the force that transmits the vertical movement from the connecting bar to the lifting pillar, and a point of application of the force that is located above the point of application and moves up and down with the lifting pillar. The center of gravity of the part to be aligned was aligned almost on the same vertical line.

Function Since the point of application of the force that causes the lifting pillar to move up and down and the center of gravity of the part that moves up and down with the lifting pillar are on the same vertical line, there is no moment load on the lifting pillar, and the relationship between the lifting pillar and the support bracket is reduced. The frictional resistance between the lifting pillars is reduced and the lifting pillars slide smoothly.

Examples 1 to 2 are examples that embody this idea.
This will be explained according to the diagram. In this embodiment, the structure other than the structure near the lower end of the lifting pillar 2 is the same as that of the conventional device, and will be described using the same reference numerals.

A ring rail 1 or a lappet is fitted to the upper end 2b of the lifting pillar 2, and the lifting pillar 2 is mounted on the upper and lower sides of a support bracket 4 which is fixed with a pair of bolts 12 facing inside of both left and right spindle rails 3. It is supported slidably in the vertical direction by fitted metals 5 and 6. A plate-shaped bracket 21 is fixed to the lower end 2c of the lifting pillar 2, and the bracket 21 extends toward the outside of the machine. A cylindrical shaft 21a is fixed to the lower surface of the outer side of the bracket 21. The diameter of 21b is small. The lifting pillars 2 on both the left and right sides are connected to each other by a connecting bar 8 having a hole 7 at both ends into which the lower end 21b of the shaft 21a of the bracket 21 fits. At this time, shaft 21
The axis a is located on the same vertical line as the center of gravity G of the lifting pillar 2 and the parts that move up and down together with it. One end is fixed to a lifting bar 9 that swings along the longitudinal direction of the machine (perpendicular to the plane of the paper), and is suspended downward via a guide pulley 10 attached to the support bracket 4. The connecting bar 8 moves up and down as the lifting bar 9 swings through the lifting belt 11, which has a bolt 11a fixed to the other end thereof and is fixed to the connecting bar 8 by a nut 22.

To explain the operation of this embodiment configured as above, during operation of the machine, the lifting bar 9 swings, and the connecting bar 8 moves up and down accordingly, and is connected to the connecting bar 8 via the bracket 21. The lifting pillar 2 moves up and down. At this time, lifting belts 11 are fixed to the left and right ends of the connecting bar 8, and the left and right lifting belts 11 move up and down at the same time, so the connecting bar 8 always maintains a horizontal state and moves up and down in the vertical direction. Therefore, the shaft 21a of the bracket 21 fixed to the connecting bar 8 is also connected to the connecting bar 8.
Since only the vertical movement acts from 1 to 2, when considering the horizontal component force applied to the lifting pillar 2, etc. located above the shaft 21a, it is only necessary to consider the force applied above the shaft 21a. Become. Now, considering the horizontal balance of the lifting pillar 2, in this embodiment, the point of action of the vertical movement of the lifting pillar 2 is the shaft 21a, which is the connection point between the bracket 21 and the connecting bar 8; Connect bar 8 to
A vertical reaction force F1 acts from the center of gravity to support the gravity F2 of the center of gravity G. At this time, since the center of gravity G and the axis 21a are on the same vertical line, the moment of the couple due to the reaction force F1 and the gravity F2 is zero, and no moment load is applied to the lifting pillar 2. Therefore, since no horizontal force acts on the lifting pillar 2, the lifting pillar 2 does not press the upper and lower metals 5, 6 in the horizontal direction, and the gap between the lifting pillar 2 and the metals 5, 6 is reduced. Frictional resistance is reduced and the lifting pillar 2 slides smoothly.

In the above embodiment, a bracket 2 is installed between the lifting pillar 2 of the ring rail 1 and the connecting bar 8.
1 was used to shift the point of application of the force that gives the lifting pillar 2 a lifting motion from the axis of the lifting pillar 2. However, the lifting pillar for raising and lowering the rappet can be implemented in exactly the same manner as described above. can. In addition, by bending the lower end of the lifting pillar 2 toward the outside of the machine and connecting it to the connecting bar 8, the connecting point between the lifting pillar 2 and the connecting bar 8 is shifted from the axis of the lifting pillar 2, and the center of gravity is shifted. It is also possible to align the points of application of the forces that give rise and fall motion on the same vertical line.

Effects of the invention As detailed above, in the present invention, the point of application of the force that transmits the lifting motion from the connecting bar to the lifting pillar and the center of gravity of the part above the point of application that moves up and down with the lifting pillar are almost the same. Since it is arranged on a vertical line, horizontal force of the lifting pillar does not act, the frictional resistance between the lifting pillar and the support bracket is reduced, and the lifting pillar slides smoothly. Therefore,
The thread is wound around the bobbin in a regular manner, allowing for smooth rewinding by the winder in the subsequent process. Furthermore, since the frictional resistance between the lifting pillar and the support bracket is reduced, the wear of the lifting pillar and the support bracket is reduced, and the life of the lifting pillar and the support bracket can be extended.

[Brief explanation of the drawing]

Fig. 1 is a front view of the embodiment of the present invention, Fig. 2 is an enlarged view of its main parts, Fig. 3 is a front view of the conventional device, and Fig. 4 explains the relationship between lifting pillar height and time of the conventional device. It is a line diagram. 1... Ring rail, 2... Lifting pillar, 3... Spindle rail, 4... Support bracket, 8... Connection bar, G... Center of gravity.

Claims (1)

[Scope of utility model registration request] The rings are installed vertically corresponding to the inner sides of both the left and right spindle rails, are supported so as to be slidable in the vertical direction by support brackets, and are connected to each other near the lower ends by connecting bars that are moved up and down by an appropriate drive source. In a spinning machine equipped with a lifting pillar that raises and lowers the rail or lappet,
The point of application of the force that transmits the vertical motion from the connecting bar to the lifting pillar is aligned with the center of gravity of a portion above the point of application and which moves up and down together with the lifting pillar on substantially the same vertical line. A lifting pillar support device for a spinning machine.