JPH10226926A - Traverse device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower the noise level, when a traverse device utilizing a cum mechanism is operated. SOLUTION: A hollow part 2a passing through the shaft center is bored in the slider shaft 2 that guides the reciprocation of the slider 4 fitted to the cum follower 3 that is engaged to the cum drum 1 driven by the motor and a cooling fluid as water is allowed to flow through the hollow parts. The slider shaft 2 is cooled to inhibit the lubricant oil contacting the shaft from increasing its temperature whereby the oil is kept optimal at its viscosity. As a result, the increase in noise level caused by heat during the operation is suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traverse device used for a yarn winding device and the like, and an object thereof is to reduce noise generated from the device.

[0002]

2. Description of the Related Art As a traverse device used for a yarn winding device or the like, there is a device using a cylindrical cam device.
This is a configuration in which a slider that slides along a slider shaft is fixed to a cam follower that engages with a cam groove of a cam drum.The slider is reciprocated by rotating the cam drum with a motor or the like. The reciprocating driving force required is taken out from a slider rod connected to the slider.

In the conventional traverse device, lubricating oil is stored at the bottom of a cam box for accommodating a cam device in order to lubricate a movable portion so that a part of a cam drum comes into contact with the lubricating oil and a lubricating oil is formed. Means are provided for supplying oil to the surface of the slider shaft.

[0004]

It is considered that the major factors that cause noise in the traverse device are the friction between the slider that reciprocates and the slider shaft and the collision between the cam drum and the cam follower. Since the slider and the cam follower reciprocate, that is, periodically reverse the direction of movement, the slider and the cam follower undergo rapid acceleration motion at the time of reverse rotation, generating a loud noise at this time.

Therefore, conventionally, as described above, lubricating oil is supplied to the surface of the slider shaft or the surface of the cam drum, and due to the viscosity of the oil, friction between the slider and the slider shaft, and the cam follower is formed in the cam groove of the cam drum. By taking measures to alleviate the impact at the time of collision, noise is reduced.

However, in the conventional traverse device, the noise level may gradually increase shortly after the start of operation.

[0007]

The inventors of the present invention have found that the main causes of the noise level increase in the conventional traverse device are friction with the slider shaft due to reciprocation of the slider and collision of the cam follower in the cam groove of the cam drum. The inventors have found that the temperature rise is caused by the heat generation, and as a result, the viscosity of the lubricating oil is reduced.

[0008] The present invention has been made based on the above knowledge with the aim of suppressing noise in a traverse device. A feature of the present invention is that a slider is mounted on a cam follower that engages with a cam drum, and the cam drum is mounted on a cam follower. In a traverse device including a cam device that reciprocates a slider along a slider shaft by being driven to rotate, by providing a means for suppressing a rise in the temperature of lubricating oil stored in a cam box that houses the cam device. is there.

One embodiment of the means for preventing the temperature of the lubricating oil from rising is to provide a means for cooling the lubricating oil in contact with the slider shaft.

Further, as a specific embodiment of the cooling means, it is conceivable that the cooling liquid is circulated inside the slider shaft.

[0011]

1 to 4 show an embodiment of a traverse device T according to the present invention. 1 is a perspective view of the traverse device T, FIG. 2 is a front sectional view, FIG. 3 is a side sectional view, and FIG. 4 is a plan sectional view. The traverse device T guides a cylindrical cam drum 1, a cam follower 3 engaged with a cam groove 1 a formed on the peripheral surface of the cam drum 1, a slider 4 having the cam follower 3 attached thereto, and a reciprocating movement of the slider 4. Slider shaft 2,2
A cam device having the above configuration is housed in the cam box 10.

A slider 4 is slidably fitted to two slider shafts 2 arranged in parallel.
a, 4a and a block portion 4 connecting the sliding cylinders 4a, 4a
The cam follower 3 is integrally attached to the lower surface of the block portion 4b. Further, a slider rod 5 for taking out the reciprocating movement of the slider 4 to the outside as a driving force is connected to the block portion 4b so as to extend to one side in the reciprocating direction.

A driving force transmitting means such as a belt 22 is bridged between the pulley 23 mounted on the rotating shaft 1b of the cam drum 1 and the driving shaft 21 of the motor 20, and the cam drum 1 is driven to rotate by the motor 20. It is configured as follows.

When the motor 20 is driven to rotate the cam drum 1, a cam groove 1a formed on the peripheral surface of the cam drum 1 is formed.
Changes its position, the cam follower 3 fitted in the cam groove 1a moves, and as a result, the cam follower 3
Are integrally reciprocated along the slider shafts 2 and 2. That is, the rotational force of the motor 20 and the like can be extracted to the outside as a reciprocating linear motion through the slider rod 5 connected to the slider 4.

A lubricating oil 30 is stored at the bottom of the cam box 10 that houses the cam device, and a part of the cam drum 1 is configured to contact the lubricating oil 30. Therefore, when the cam drum 1 is rotated, the lubricating oil 30 spreads over the entire cam groove 1a, and the sliding friction of the cam follower 3 is reduced. Further, by providing lubricating oil between the inner surface of the cam groove 1a and the cam follower 3, it is possible to reduce the impact when the cam follower 3 collides with the inner surface of the cam groove 1a when reversing the moving direction. .

On the other hand, a shelf 11 is formed on the upper side in the cam box 10, and a support member 12 fixed to the shelf 11 is formed.
Thereby, oil feed conduits 7, 7 for supplying lubricating oil to the slider shaft 2 are supported. The two oil feed pipes 7, 7 are formed of pipes that are curved at substantially right angles, and each of the tip portions 7a is disposed so as to be substantially directly above each of the slider shafts 2, 2, and the base end portion 7b of the cam drum 1 is provided. They are arranged near the surface. Further, a guide portion 8 for collecting oil which is curved and formed along the peripheral surface of the cam drum 1 is connected to the base end portion 7b.

When the cam drum 1 is rotated, the lubricating oil adhering to the surface of the cam drum 1 is guided to the guide portion 8 and flows into the feed pipe 7 from the base end portion 7b, and then to the tip end portion 7a.
And onto the slider shaft 2. This allows
The sliding friction between the slider 4 and the slider shaft 2 is reduced.

In the vicinity of both ends of the slider shaft 2, cylindrical cushioning members 6, 6 having one end closed.
Is installed. When the slider 4 reaches both end positions of the reciprocating movement range, that is, the reversal position of the movement direction, the tip ends of the sliding cylinders 4a, 4a are inserted into these buffer members 6, 6. When the sliding cylinders 4a, 4a are inserted into the buffer members 6, 6, the lubricating oil supplied from the oil feed conduits 7, 7 to the surfaces of the slider shafts 2, 2 is supplied to the sliding cylinders 4a, 4a. And cushioning members 6,6
Therefore, the shock generated when the slider 4 reverses the moving direction is reduced.

By the means described above, noise in the traverse device T has been conventionally suppressed. However, when the operation is continued, there is a problem that the temperature of the lubricating oil rises due to frictional heat and the viscosity of the lubricating oil decreases, and as a result, a sufficient lubricating action cannot be performed and the noise level gradually increases. Therefore, in this embodiment, means for cooling the slider shafts 2 and 2 and suppressing a rise in the temperature of the lubricating oil in contact with the slider shaft 2 is adopted.

Specifically, a configuration is conceivable in which a hollow portion 2a penetrating the center portion is provided in the slider shaft 2, and a cooling fluid flows through the hollow portion 2a. As the cooling fluid, it is also possible to use the same kind of lubricating oil and organic solvent as those in the cam box 10 as well as an inert gas as a coolant in addition to water.

As shown in FIG. 3 or FIG. 4, the circulation means for the cooling fluid is connected to a circulation flow path 40 so that the cooling fluid passes through the hollow portion 2a to the slider shaft 2. On the way, the pump 41 and the cooling fluid radiator 4
2. A cooling fluid storage tank 44 is provided. In the illustrated example, two slider shafts 2 and 2 are connected in parallel to a cooling fluid circulation channel 40 so that the cooling fluid flows through each of the slider shafts 2 and 2 at the same time. .

In FIG. 3, the heat radiating section 42
In FIG. 4, a water-cooled mechanism for bringing the circulation flow path 40 into contact with a coolant such as water is employed.

The cooling fluid flowing through the circulation channel 40 by driving the pump 41 exchanges heat while flowing through the slider shafts 2, 2 to cool it. As a result of the heat exchange, the cooling fluid whose temperature has risen is cooled by the heat radiating section 42 and then guided to the storage tank 44. The cooling of the slider shaft 2 suppresses a rise in the temperature of the lubricating oil in contact with the slider shaft 2. Therefore, the viscosity of the lubricating oil is appropriately maintained. As a result, the smoothness of the reciprocating movement of the slider 4 is maintained, and the collision of the cam follower 3 in the cam groove 1a is reduced. The resulting noise can be reduced.

The cooling of the slider shaft 2 can be performed, for example, by circulating a cooling fluid.
Means for lowering the temperature by thermoelectric cooling utilizing the Peltier effect by incorporating a semiconductor into the inside are also conceivable.

In addition, the embodiments of the present invention do not prevent any appropriate changes according to the actual situation.

[0026]

Example: By cooling the slider shaft,
The following test confirmed that the temperature rise of the circulation oil could be suppressed and the noise level generated from the traverse device could be reduced. As shown in FIG. 4, in the traverse device, a circulation channel 40 for a cooling fluid in which two slider shafts 2 and 2 are connected in parallel is formed. Changes in the temperature of the circulating oil and the magnitude of the noise generated by the traverse device T before and after the water is circulated as the cooling fluid in the circulation channel 40 by operating the traverse device T Find out. The test conditions were: ambient temperature of circulating water = about 2
0 ° C., pump flow rate = about 400 ml / min.

After a lapse of a predetermined time from the start of the operation of the traverse device T, the temperature of the slider shaft before cooling = about 80 ° C, the temperature of the cam box = about 65 ° C, and the temperature of the lubricating oil = about 70 ° C · noise level = about 91dB
However, after cooling of the slider shaft by circulation of water, the temperature of the slider shaft = about 50 ° C., the temperature of the cam box = about 42 ° C., the temperature of the lubricating oil = about 52 ° C., and the noise level = About 85.8 dB. Therefore, the test results showed that the temperature of the lubricating oil was reduced by about 18 ° C. and the noise level was reduced by about 5.2 dB.

[0028]

According to the present invention, the viscosity of the lubricating oil can be properly maintained by suppressing the temperature rise of the lubricating oil in the cam box accommodating the cam device in the traverse device. Therefore, it is possible to prevent a decrease in the lubricating action and to reduce a noise level generated during operation.

When adopting a configuration in which the slider shaft is cooled as means for suppressing the temperature rise of the lubricating oil, the sliding portion of the slider closely related to the generation of noise is directly cooled. The efficiency of noise reduction is very good.

Further, by employing a cooling means through which the cooling fluid flows through the hollow portion of the slider shaft, there is obtained an advantage that the cooling fluid is not scattered around.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a traverse device according to the present invention.

FIG. 2 is a front sectional view showing an embodiment of the traverse device according to the present invention.

FIG. 3 is a side sectional view showing an embodiment of the traverse device according to the present invention.

FIG. 4 is a plan sectional view showing an embodiment of the traverse device according to the present invention.

[Explanation of symbols]

 T Traverse device 1 Cam drum 1a Cam groove 1b Rotary shaft 2 Slider shaft 2a Hollow portion 3 Cam follower 4 Slider 5 Slider rod 6 Buffer member 7 Oil feed conduit 10 Cam box 20 Motor 30 Lubricating oil 40 Circulating flow channel 41 Pump 42 Heat radiating portion 43 Cooling fan 44 Storage tank

Claims (3)

[Claims] 1. A traverse device having a cam device, wherein a slider is attached to a cam follower engaged with a cam drum, and the cam device rotates the cam drum to reciprocate the slider along a slider shaft. A traverse device comprising means for suppressing a rise in the temperature of lubricating oil in a box. 2. The traverse device according to claim 1, further comprising means for cooling lubricating oil in contact with said slider shaft. 3. The traverse device according to claim 2, wherein said cooling means is configured to circulate a cooling liquid inside the slider shaft.