JPH07157054A - Trolley fat supply device - Google Patents

Abstract

PURPOSE:To capture an oil injecting part reliably by a nozzle even if a trolley hanger swings while moving by arranging a moving stand so that extremely small rotation can be allowed within a vertical plane and a horizontal plane. CONSTITUTION:When a slider 16 is advanced along a guide shaft 10 by actuation of a fluid cylinder 17, a moving stand 24 advances, and stops by striking against a stopper. At that time, an extensible and contractible stopper strikes against a standing-up piece 39, and rotates a support shaft 27, and stops by swinging an arm 30 forward, and a forked part 31 turns forward. Thereby, when a trolley hanger 2 advances along a conveyor rail 1, the forked part 31 can capture the upper end part 12 by surrounding it with three rollers 32. Since the moving stand 24 is supported with the guide shaft 10 through the slider 16, it is supported so as to be capable of extremely small swinging in a vertical plane, and at the same time, since it is supported with a column so that extremely small rotation can be allowed in a horizontal plane, the forked part 31 can capture the part reliably even if the trolley hanger 2 swings left and right to a certain degree.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley greasing device for automatically supplying lubricating oil such as grease during movement of a moving body such as a roller or a chain in a trolley conveyor.

[0002]

2. Description of the Related Art A trolley greasing device for supplying a lubricating oil such as grease to a bearing portion of a roller of a trolley hanger in a trolley conveyor moving along a conveyor rail during operation without stopping the movement is practically fair. -4
It is known from Japanese Patent No. 3675, Japanese Utility Model Publication No. 64-1294, Japanese Utility Model Publication No. 63-7749, and the like.

As is well known, the trolley conveyor is provided with a conveyor rail having an I-shaped cross section along the required transportation line on the ceiling of the factory, and a pair of trolley hangers for supporting the objects to be transported are provided in pairs at the upper ends thereof. Rollers are provided, and the rollers are engaged with the rails to suspend a large number of trolley hangers from the conveyor rail at regular intervals, and the hangers are fixed by a chain having a fixed length. It is configured to be hung on a rail at a pitch so that an object to be transported can be moved at a constant speed along the rail, and is widely used in an automobile factory and other automation factories.

By the way, in the trolley conveyor, the trolley hanger swings back and forth around the roller shaft as a fulcrum due to external force applied during movement, rail meandering, etc., or it swings left and right, or the rollers themselves move on the conveyor rail. There is a case that it rocks.

[0005]

However, the conventional trolley greasing device as described in the above publication cannot follow the roller swing as described above, and the greasing nozzle does not rotate. There was a risk that the lubrication would not be successful because it did not meet

[0006]

SUMMARY OF THE INVENTION The trolley greasing device of the present invention is intended to solve the above problems. A stand is provided on a horizontally supported I-shaped conveyor rail, and a round bar-shaped guide shaft is provided. A slider horizontally supported on the stand so as to be located right above the center line of the conveyor rail and reciprocating along the guide shaft by the operation of the fluid cylinder allows a minute rotation in the vertical plane of the guide shaft. The movable table is supported by the slider so as to allow a minute rotation in a horizontal plane, and a spindle is provided on the movable table together with a claw piece for controlling the rotation, and arms are provided at both ends of the spindle. And the arm is hung on both sides of the conveyor rail so that the arm can swing back and forth around the support shaft as a pendulum, and a forked portion into which the upper end of the trolley hanger can be fitted at the tip of the arm and Greasing nose With the movement of the trolley hanger, the upper end of the trolley hanger is swung forward by the operation of the fluid cylinder to move the arm forward and the upper end of the trolley hanger is captured by the forked portion. The arm is placed in a vertical posture, and while the claw piece engages with the support shaft, the vertical posture is maintained and the movable table is moved backward, so that the greasing nozzle is pressed against the roller shaft of the trolley hanger. The upper end of the trolley hanger from the bifurcated portion is provided with a cam that disengages the claw pieces when the movable table retreats for a predetermined period and the arm is swingable rearward. It is characterized in that it is configured to leave.

[0007]

Since the movement is provided so as to allow a minute rotation in the vertical plane and in the horizontal plane, the arm can follow the swing of the trolley hanger, so that even if the trolley hanger slightly swings, its upper end The part can be reliably captured by the bifurcated part. Therefore, it is possible to provide a trolley greasing device that is less likely to cause trouble.

[0008]

An embodiment of the present invention will be described with reference to the drawings.
In the figure, 1 is a conveyor rail made of steel material having an I-shaped cross section which is horizontally supported on the ceiling of a factory, and 2 is an upper end 1.
A pair of rollers 3 provided on the conveyor rail 1 rolls on both ends of the conveyor rail 1
A trolley hanger that moves at a constant speed in the direction of the arrow along which a transported object (not shown) is suspended at the lower end of the trolley hanger 2. A large number of the trolley hangers 2 are hung on the conveyor rail 1 at regular intervals and move in the direction of the arrow to form a trolley conveyor capable of continuously transferring an object to be conveyed. Reference numeral 11 is a roller shaft, and an oil inlet is opened at the end of the roller shaft 11.

In the trolley greasing device of the present invention, however, the upper and lower surfaces of the conveyor rail 1 are spaced apart from each other by the substrates 4, 4.
4 are fixed by bolts 5, guide columns 6 and 6 are vertically provided on the respective substrates 4 and 4, and stands 7 and 7 are provided so as to be vertically movable along the guide columns 6 and 6. Fluid cylinders 8 and 8 are provided in the stands 7 and 7, respectively, and the stands 7 and 7 are configured to move up and down by the operation of the fluid cylinders 8 and 8.
Then, mounting plates 9 and 9 are fixed to the opposing surfaces of the stands 7 and 7, and a round bar-shaped guide shaft 10 is horizontally supported between the mounting plates 9 and 9 so as to be located right above the center line of the conveyor rail 1. To do. Reference numeral 13 is a rectangular flat plate that is placed under the guide shaft 10 and between the mounting plates 9 and 9, and a guide groove 14 to be described later is formed on the upper surface of the flat plate 13. For this reason, when the fluid cylinders 8 and 8 operate and the stands 7 and 7 move upward, the guide shaft 10 and the flat plate 13 can move upward integrally with this.

Reference numeral 16 denotes a slider which is mounted on the guide shaft 10 and slides along the guide shaft 10. As shown in FIG. 2, the slider 16 has a small ball rolling on the outer peripheral surface of the guide shaft 10 on the inner peripheral portion thereof. It is provided to reduce sliding resistance. Further, since the guide shaft 10 has a round bar shape, the slider 16 does not hinder the rotation around the guide shaft 10. Reference numeral 17 denotes a fluid cylinder fixedly mounted on one mounting plate 9 via a bracket 18, and a connecting piece 20 holding the slider 16 is screwed to the tip of a piston shaft 19 of the fluid cylinder 17. Therefore, the slider 16 can be reciprocated along the guide shaft 10 by the operation of the fluid cylinder 17. As shown in FIG. 2, a support plate 22 is integrally fixed to the lower surface of the slider 16 so as to integrally hang around a columnar column 21. Then, a roller bearing 23 is fixed to the outer periphery of the column 21, and the movable base 24 is rotatably supported by the roller bearing 23 in a horizontal plane. Reference numeral 25 is an annular body fixed to the upper surface of the moving table 24 for fixing the outer ring of the roller bearing 23 to the moving table 24.

A round rod-shaped support shaft 27 is horizontally supported on the movable table 24 by roller bearings 26, 26. Both ends of the support shaft 27 projecting from both side surfaces of the moving base 24 are machined into a square shape and long holes 28 for attachment are bored, and arms 30, 30 which hang down on both sides of the conveyor rail 1 are screwed in these parts, respectively. It is fastened by 29. The arms 30, 30 have a forked portion 31 formed at the tip thereof.
Roller rollers 32 are provided on both the front end portions and the crotch portion of the roller 1.

Brackets 33, 33 are fixed to the outer surfaces of the arms 30, 30 by bolts 34, and small fluid cylinders 35 are provided at the tips of the brackets 33, 33, respectively, and a piston shaft of the fluid cylinder 35 is provided. A greasing nozzle 37 is attached to the center of the bifurcated portion 31 with a coil spring 36 interposed therebetween. 38
Is a coil spring stretched between a screw fixedly planted on the arms 30 and 30 and a screw fixedly fixed to one side of the movable table 24 in order to elastically bias the arms 30 and 30 rearward. is there. Further, 39 and 39 are standing pieces fixed to the both ends of the support shaft 27 with screws together with the arms 30 and 30.

Reference numeral 41 denotes a rolling wheel provided on the front part of the movable table 24, and the rolling wheel 41 can roll in the guide groove 14.
A pivot 42 is provided at the rear of the movable table 24, and a pawl piece 43 is pivotally supported on the pivot 42. The tip of the claw piece 43 can be engaged with and disengaged from the engaging groove 44 formed in the outer periphery of the intermediate portion of the support shaft 27 as shown in FIG. At the other end of the claw piece 43, a rolling wheel 4 capable of traveling in the guide groove 14 is provided.
5 is provided, and the rolling wheel 45 is connected to the guide groove 14
A shaft 47 is supported on the other end of the claw piece 43 via a pin 46 to elastically press it upward, and a coil-shaped spring 48 is attached to the shaft 47. 49 is the guide groove 14
Is a cam having an inclined surface fixed to the rear end of the with a screw 50.

Further, 51 is a movable table 24 of the front mounting plate 9.
It is a stopper fixed to the surface opposite to. Also, 52,
Reference numeral 52 is an expansion / contraction stopper provided on the mounting plate 9 so as to be able to face the upright pieces 39, 39. The expansion / contraction stopper 52, 52 has a cylindrical base end 53 into which an expansion / contraction shaft 54 is inserted. The expandable shaft 54 is provided with a trochanter 55 at the tip thereof, and the expandable shaft 54 is covered with a coil spring 56.
Due to the elasticity of the trochanter 55, the trochanter 55 elastically protrudes up to a fixed position and can face the standing pieces 39, 39.

A mounting rod 60 is installed between the mounting plates 9 and 9 as shown in FIGS. 7 to 9, and the mounting rod 60 is attached.
Limit switches 61, 62, 63 are attached to the. The limit switch 61 is provided to detect the standing of the standing piece 39. Also limit switch 6
2 is provided to detect the movement of the standing piece 39 to a predetermined position in the standing state. Also, limit switch 63
Is provided so that it can be actuated by a tentacle 64 fixedly mounted on the movable table 24 to detect the movement of the movable table 24 to the rearmost end.

In the trolley greasing device thus constructed, the stands 7 and 7 are moved by the fluid cylinder 8 when not in use.
Is raised so as to avoid the arms 30, 30 and the greasing nozzles 37, 37 upward so as not to hinder the progress of the trolley hanger 2. Then, at the time of required lubrication, the stands 7 and 7 are lowered with the piston shaft 19 extended. By moving the slider 16 forward along the guide shaft 10 by the extension of the piston shaft 19, the movable table 24 moves forward, and as shown in FIG. 7, the movable table 24 hits the stopper 51 and stops. At that time, the trochanter 55 of the telescopic stopper 52
Hits the upright piece 39 to rotate the support shaft 27 to rotate the arm 3
0 and 30 are swung forward and stopped, and the forked portion 31 faces forward. Therefore, when the trolley hanger 2 advances in the direction of the arrow along the conveyor rail 1, the forked portion 3
1 can be captured by surrounding its upper end by three roller rollers 32. At that time, the support shaft 27 is in the rotational position as shown in FIG. 4, and the claw piece 43 is loosely fitted in the engaging groove 44.

The valves are opened so that the fluid in the fluid cylinder 17 can be discharged when the arms 30, 30 are swung forward and in the waiting state. Further, since the movable table 24 is supported by the guide shaft 10 via the slider 16, the movable table 24 is supported so as to be capable of slightly swinging in a vertical plane orthogonal to the guide shaft 10, and at the same time, the column 21 is slightly rotated in a horizontal plane. Since the forked portion 31 of the arms 30, 30 provided on the support shaft 27 of the movable table 24 is supported so that the trolley hanger 2 swings to the left or right to some extent, both rollers 3, 3. Even if 3 swings on the conveyor rail 1, it can be reliably captured.

Then, as the trolley hanger 2 advances along the conveyor rail 1, the moving force of the trolley hanger 2 causes the arms 30, 30 to return to the vertical posture as shown in FIG. 8 against the elasticity of the coil spring 56. As shown in FIG. 5, the support shaft 27 rotates and the claw piece 43 engages with the end portion of the engaging groove 44 to maintain the vertical posture. At that time, the limit switch 61 is kicked by the upright piece 39 and the fluid cylinders 35, 35 are actuated to press the greasing nozzle 37 against the roller shaft 11, so that the reaction force thereof opens the lubrication valve in the greasing nozzle 37. Lubricating oil such as grease is supplied from the tip of the greasing nozzle 37. In this way, the arm 30 keeps the vertical posture and the moving force of the trolley hanger 2 causes the movable table 24 to move.
Moves integrally, and when the movable table 24 reciprocates to the position shown by the alternate long and short dash line in FIG. 8, the limit switch 62 is kicked by the standing piece 39, the fluid cylinders 35, 35 are operated in the opposite direction, and the greasing nozzle 37 is moved. Refueling is stopped by separating from the roller shaft 11.

Further, as the trolley hanger 2 moves, the movable table 24 moves backward, and when the rolling wheel 45 rides on the cam 49, the claw piece 43 tilts against the spring 48, and the tip of the claw piece 43 is shown in FIG. As shown by the one-dot chain line, the engaging groove 44
Since it is disengaged from the inside, the support shaft 27 can be further rotated in the direction of the arrow as shown in FIG.
Swings backward as shown in FIG. Therefore, the upper end of the trolley hanger 2 is released from the catch of the bifurcated portion 31 and can move further rearward. In this way, when the movable table 24 moves backward together with the trolley hanger 2 for a predetermined section, the limit switch 63 is kicked by the tentacle 64 and the fluid cylinder 17 is actuated to extend the piston shaft 19, so that the movable table 24 moves forward again. Wait for the next trolley hanger to return to the state of. Therefore, it is possible to lubricate the roller shaft 11 of the trolley hanger 2 that comes one after another.

[0020]

As described above, according to the trolley greasing device of the present invention, the upper end of the trolley hanger is captured by swinging the arm forward, and the trolley hanger is greased in a vertical posture and then separated by swinging backward. The trolley hanger is swayed because the movable table supporting the support shaft is supported by the slider so as to allow minute rotation in the horizontal plane and the slider is provided on the round bar-shaped guide shaft. The arm can follow up even if it is slightly displaced due to movement, and this can be reliably captured. Therefore, there is a beneficial effect that the trouble is less likely to occur and the grease can be reliably fed.

[Brief description of drawings]

FIG. 1 is a perspective view of a trolley greasing device according to the present invention.

FIG. 2 is a partial cross-sectional perspective view of the trolley greasing device.

FIG. 3 is a cross-sectional view of the trolley greasing device.

FIG. 4 is a cross-sectional view of a support shaft.

5 is an operation state diagram of FIG. 4.

6 is an operation state diagram of FIG. 4.

FIG. 7 is a side view of the trolley greasing device according to the present invention.

8 is an operation state diagram of FIG. 7.

9 is an operation state diagram of FIG. 7.

[Explanation of symbols]

 1 Conveyor Rail 2 Trolley Hanger 3 Roller 4 Substrate 7 Stand 9 Mounting Plate 10 Guide Shaft 11 Roller Shaft 12 Upper End 13 Flat Plate 14 Guide Groove 16 Slider 17 Fluid Cylinder 23 Roller Bearing 24 Moving Stand 26 Roller Bearing 27 Spindle 30 Arm 31 Bifurcation Shaped part 32 Roller roller 37 Greasing nozzle 39 Standing piece 43 Claw piece 49 Cam 51 Stopper 52 Expansion / contraction stopper 61 Limit switch 62 Limit switch 63 Limit switch

Claims (1)

[Claims] 1. A stand is provided on a horizontally supported I-shaped conveyor rail, and a round bar-shaped guide shaft is horizontally supported on the stand so as to be located right above the center line of the conveyor rail. A slider that reciprocates along the guide shaft by the operation of a cylinder is provided on the guide shaft so as to allow a minute rotation in a vertical plane, and a slider is provided on the slider so as to allow a minute rotation in a horizontal plane. A supporting shaft is provided on the movable table together with claw pieces for controlling its rotation, and arms are fixed to both ends of the supporting shaft so that the arm can swing back and forth like a pendulum about the supporting shaft as a fulcrum. As described above, a bifurcated portion into which the upper end of the trolley hanger can be fitted and a greasing nozzle are provided at the tip of the arm so that the arm can be moved forward by moving the fluid cylinder. Previous The upper end of the trolley hanger that swings and moves in one direction is caught by the bifurcated portion to move the trolley hanger into a vertical posture so that the claw piece engages with the support shaft. As a result, while maintaining the vertical posture, the greasing nozzle is brought into pressure contact with the roller shaft of the trolley hanger to greasing, and when the moving table moves backward for a predetermined period, the engagement of the claw piece is stopped. A trolley greasing device, characterized in that a cam for disengaging the trolley is provided so that the arm can be swung rearward so that the upper end of the trolley hanger is disengaged from the bifurcated part.