JPH11254278A - Carrier device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the excessive feeding or a loading error of workpiece by providing a workpiece jumping-out preventing mechanism for performing pressing in the direction for stopping the carrying of the workpiece, and a workpiece energiging plate for holding the workpiece in the specified position of the carrying path tip. SOLUTION: A work 9a is in contact with a carrying surface 13 before it its carrying and, at the same time, the work 9a is also in contact with the tip of a loader blade 3 located in an initial position. A work jumping-out preventing pin 10 is protruded in a carrying route 21 by the pressing of a spring 18, and prevents the movement of the work 9a on the carrying surface 13 in the carrying direction. Also, the work 9a held in a work holding position 22 by rotary rollers 1 and 2 and a shoe 12 is rotated by the rotary rollers 1 and 2, and subjected to grinding. After the end of grinding, a part of the work holding position 22 slightly inclined to the shoe 12 side is set, and the work 9a is supported on the shoe 12 and stopped in the work holding position 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for transporting a workpiece having a circular outer peripheral surface, and more particularly, to a continuous grinding device for a workpiece having a two-roll one-shoe workpiece holding device. It is about.

[0002]

2. Description of the Related Art A workpiece having a circular outer peripheral surface is intermittently taken out from the lowermost end of one vertical inshoot and held and rotated by two rolls rotating after being transported to a grinding position. The transport device in the grinding device in which the inner surface of the workpiece is ground by transporting only one workpiece from the in-shoot and further holding the workpiece by two rolls at the grinding position, It is necessary to quickly remove the ground workpiece placed at the grinding position, and to securely place and hold the transported workpiece at the grinding position.

The removal of the workpiece from the vertical in-shoot to the transport surface is generally performed by dropping the workpiece onto the transport surface. However, since the full load of the workpiece housed in the inshoot is applied to the workpiece at the lowermost end when it falls, and the transport direction is open, the center of gravity of the workpiece is Is shifted in the transport direction, a further workpiece may fall on the transport surface, and two or more workpieces may be taken out of the in-chute at the same time.

In order to prevent such a problem, at present, the work is dropped on the transfer surface at an inclination in the direction opposite to the opening, or the work is dropped from the transfer direction. Measures such as flowing coolant oil toward the ship.
As a more reliable measure, for example, public utility model gazette Showa 6
1-5555 includes (1) a flexible piano wire or the like for preventing the workpiece 9a from protruding in the transport direction at the drop point of the workpiece 9a on the transport surface as shown in FIG. Member 30
Is slightly protruded. Further, (2) a storage for accommodating the workpiece 9a when it falls onto the transport surface, at the tip of the loader blade 3 which transports the workpiece 9a on the transport surface as shown in FIG. By providing the portion 32, there is a method of preventing two or more workpieces 9a from jumping out.

[0005] Further, regarding the removal of the ground workpiece at the grinding position and the arrangement of the workpiece before grinding, as shown in FIG. 5, a pressing member 34 such as a piano wire or a leaf spring is used.
Is arranged in advance so that the workpiece 9a is pressed against the rotating roll 1 and the shoe 12 or the like, so that the workpiece 9a before grinding carried by the loader blade 3 pushes the pressing member 34 to press the ground workpiece. The discharge path of the workpiece 9b is opened, and the workpiece 9b is extruded into the discharge path by the workpiece 9a to remove the workpiece 9b. Further, the workpiece 9a before grinding is rotated by the pressing member 34. It was pressed against the roll 1 and the shoe 12 to arrange and hold it.

[0006]

However, in the prior art (1), the setting adjustment of the flexible member 30 is delicate, and it is difficult to reliably prevent the workpiece from popping out due to an adjustment error. However, at the same time, there is a problem that maintenance in a considerably short period is required due to deformation of the flexible member. In (2), there is no problem in preventing the workpiece from jumping out of the in-shoot. However, when the workpiece is held at the grinding position, the pressing member 34 is always used.
Had the problem of causing excessive deformation.

Further, when the pressing member 34 is used in a state where it is constantly pressed against the work, it should maintain a stable pressing force for a long time due to frictional heat or wear due to friction with the work. However, the adjustment is delicate when used slightly floating from the workpiece, and it has been difficult to reliably remove the workpiece or remove the arrangement error due to an adjustment error.

[0008]

In order to solve the above-mentioned problems, a transfer device according to the present invention intermittently transfers a workpiece from an in-shoot in which one or more workpieces having a circular outer peripheral surface are stored. In the transfer device for taking out the workpiece and further transporting the workpiece to a predetermined supply position, the transport device communicates with the discharge port of the in-shoot from which the workpiece is discharged, and transports the workpiece to the predetermined supply position. Path, a loader blade for transporting the workpiece from the in-shoot discharge port to a predetermined supply position in the transport path, and a tip end of the loader blade near the in-shoot discharge port in the transport path. A workpiece jump-out prevention mechanism urged in a direction to stop the transport of the workpiece conveyed in the transport path while being opposed to the workpiece via the workpiece, and the workpiece at the leading end of the transport path. At a given supply position Workpiece was carrying device comprising a workpiece urging plate which is biased to be retained.

The predetermined position to which the workpiece is supplied is a position surrounded by the two rotating rolls and the shoe and where the workpiece is processed. Further, the loading of the workpiece from the in-shoot onto the transport surface is not limited to the vertical direction, but may be loading from the lateral direction or the like.

Furthermore, it is preferable that the above-mentioned mechanism for preventing the workpiece from popping out has a pin that can be retracted to a retreat path communicating with the transport path and is urged from the retreat path toward the transport path.

The work urging plate is attached to one end of a lever whose center is supported, and the other end of the lever faces a cam provided on a loader blade at a predetermined position. Preferably, a cam follower for rotating the lever in the direction and a spring for urging the lever in a direction opposite to the predetermined direction are attached. The work urging plate is
It is good to consist of an elastic member.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to a schematic sectional view of FIG. The transfer device according to the present invention holds the workpieces, that is, the inner or outer rings of the bearings, that is, the workpieces 9a stacked in a line in the vertical direction, and has a discharge port 23 for the workpiece 9a at a part of the lower end surface. 8, a conveying path 21 formed by the lower end surface of the inshoot 8 and the upper surface of the shoe 12, that is, the conveying surface 13, and communicating with the discharge port 23, and the work 9a at a predetermined work holding position 22 at the leading end of the conveying path. It comprises a rotating roll 1 and a rotating roll 2 for holding and rotating, and a loader blade 3 for transporting the workpiece 9a by pushing the workpiece 9a to the leading end of the transport path.

The transport path 2 at the rear of the loader blade 3
A cam surface 4 is attached to a portion outside the cam 1, and the cam surface 4 faces a cam follower 15 formed on one end surface of a rotatable piano wire swing lever 6, When the surface 4 comes into contact with the cam follower 15, the piano wire swing lever 6 is rotated in a predetermined direction (in the drawing of the present embodiment, away from the transport surface 13). Also,
The piano wire swing lever 6 is urged by a spring 17 in a direction opposite to a predetermined direction, and holds the piano wire swing lever 6 at a position before rotation when the cam surface 4 does not abut on the cam follower 15.

Further, a piano wire 16 is connected to the piano wire swing lever 6, and in conjunction with the rotation of the piano wire swing lever 6, the rotating roll 1 and the shoe 1 are moved relative to the work 9a.
2 and a biasing force is applied in a direction in which the two are simultaneously contacted.
The rotation of the piano wire 16 is stopped by contact with the workpiece 9a, but the rotation range of the piano wire swing lever 6 by the cam 4 and the cam follower 15 is slightly larger than the rotation range of the piano wire 16; As a result, the piano wire 16 is urged against the work 9a in the rotation direction by the elastic force of the piano wire. The piano wire swing lever 6 is connected to the stop pin 2
5, the rotation is controlled to a desired swing angle.

In the vicinity of the discharge port 23 of the in-shoot 8, the work 9a which has fallen from the discharge port 23 of the in-shoot 8 onto the transfer surface 13 is substantially opposed to the loader blade 3 via the work 9a. A work protrusion prevention pin 10 for preventing movement on the work 13 is provided. The work protruding prevention pin 10 is disposed on a retreat path provided at a lower portion of the inshoot for retreating when the work 9 a is conveyed by the loader blade 3, and is moved in the direction of the conveyance path by a spring 16 via a work holding pin lever 11. It is urged to prevent the movement of the work 9a. Further, the end face of the work 9a is guided by the front plate 26.

As shown in an enlarged view of the vicinity of the discharge port 23 of the in-shoot 8 in FIG. 2, a work holding position of the work 9a on the transfer surface 13 which does not depend on the loader blade 3 when the work 9a falls. A slope 14 is provided in the direction opposite to the work holding position 22 in order to prevent the protrusion in the 22 direction.

Next, the operation of transporting the work 9a of the apparatus according to the present invention will be described. In the state before the transfer, the work 9a is in contact with the transfer surface 13 and at the same time, the slope 9
As a result, the work 9a is also in contact with the tip of the loader blade 3 at the initial position. Work jump-out prevention pin 1
With respect to 0, the urging force of the spring 18 protrudes into the conveyance path 21 to prevent the work 9a from moving on the conveyance surface 13 in the conveyance direction.

The cam surface 4 provided at the rear of the loader blade 3 is not in contact with the cam follower 15, the piano wire swing lever 6 is in a state before rotation by the urging force of the spring 17, and the piano wire 16 is Work 9 at work holding position 22
b.

At this point, the work 9b held at the work holding position 22 by the rotating roll 1, the rotating roll 2 and the shoe 12 is rotated by the rotating rolls 1 and 2 to perform grinding.

When the grinding is completed, the rotation of the rotary roll 1, the work 9b and the rotary roll 2 is stopped. Subsequently, the rotating roll 2 is moved to the work 9 by a swing cylinder (not shown).
b. The work holding position 22 is not a vertex on the circumference of the rotating roll 1 but a shoe 1.
The work 9b is supported by the shoe 12 and stays at the work holding position 22 even when the rotary roll 2 is separated from the work 9b.

Next, the loader blade 3 starts moving forward toward the work holding position 22 by a cylinder (not shown) attached to the rear part. The work 9a, which has been in contact with the tip of the loader blade 3, is pushed by the loader blade 3 and is conveyed in the direction of the work holding position against the urging force applied to the work protruding prevention pin 10 by the spring 18. The work 9c held directly above the work 9a in the in-shoot 8 falls toward the transfer surface 13 due to the start of transfer of the work 9a, but is supported by the upper surface of the loader blade 3 and held at this position in the in-shoot 8. Is done.

With the advance of the loader blade 3, the piano wire swing lever 6 rotates against the spring 17 by the cam follower 15 riding on the cam surface 4, and the piano wire 16 turns the work 9b with this rotating motion. Pressed to. Further, as the loader blade 3 continues to advance, the work 9a comes into contact with the piano wire 16 in contact with the work 9b, and deflects the piano wire 16 in a direction away from the work 9b. At this stage, the work 9b is still held at the work holding position 22 by the effect of the inclined surface of the rotating roll 1.

The work 9a is further advanced and comes into contact with the work 9b while bending the piano wire 16, and the work 9b
Is pushed out from the work holding position 22 in the vertex direction of the rotating roll 1 to drop the work 9b in a direction away from the shoe 12. Subsequently, the work 9a falls from the transport surface 13 to the work holding position 22 due to the elastic force of the piano wire 16 and the action of gravity, and is held between the rotary roll 1, the shoe 12, and the piano wire 16. The work 9b is stored in an unloading chute (not shown), but may be dropped on the unloading chute using a vacuum suction arm.

After the work 9a is held at the work holding position 22, the loader blade 3 is retracted toward the initial position by a cylinder (not shown). When the cam surface 4 and the cam follower 15 separate from each other, the piano wire swing lever 6 returns to a state before rotation by the spring 17, and the piano wire 16 also separates from the work 9a. The next work 9c falls on the transport surface 13 when the loader blade 3 returns to the initial position. At this time, the work 9c is held in a state in which the work 9c abuts on the leading end of the loader blade 3 in the transport path 21 by the work protruding prevention pin 10 projecting into the transport path 21 by the biasing force of the spring 18 again. The processing of the work 9a is started, and after the processing is completed, the transfer of the work 9c is started.

In the present embodiment, only the case where the work 9a is supplied in the vertical direction has been described, but the supply direction of the work is not particularly limited, and the work may be supplied from the lateral direction or the like. The material of the piano wire 16 is not particularly limited as long as it is an elastic material having flexibility.

[0026]

According to the present invention, in a two-roll one-shoe type workpiece holding apparatus, a workpiece jumping-out prevention mechanism is provided near a lower portion of an inshoot, and a loader blade is provided when the workpiece is supplied to a processing position. By providing a mechanism that urges the workpiece in the direction in which the workpiece is held by the and the rotating roller to prevent the workpiece from jumping to the unloading side and to act only during loading, Prevents double feeding or loading errors of the workpiece.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a configuration of a transport device according to the present invention.

FIG. 2 is an enlarged view of a main part schematically showing the configuration of a transport device according to the present invention.

FIG. 3 is a diagram showing an example of a schematic configuration in a related art of a mechanism for preventing a workpiece from jumping out below an in-shoot.

FIG. 4 is a diagram showing an example of a schematic configuration in a conventional technique of a mechanism for preventing a workpiece from jumping out below an in-shoot.

FIG. 5 is a diagram showing an example of a schematic configuration in a related art of a loading error prevention mechanism at a processing position of a workpiece.

[Explanation of symbols]

 1: rotating roll 2: driven roll 3: loader blade 4: cam surface 6: piano wire swinging lever 8: inshooting 9a, 9b, 9c: work 11: work holding pin lever 12: shoe 13: work transfer surface 14: slope 15: Cam follower 16: Piano wire 17, 18: Spring 21: Transport path 22: Work holding position 23: Discharge port 25: Stop pin 26: Front plate 30: Flexible member 34: Pressing member

Claims (1)

[Claims] 1. A transfer device for intermittently removing a workpiece from an in-shoot in which one or more workpieces having a circular outer surface are stored, and further transporting the workpiece to a predetermined supply position. A conveying path communicating with the discharge port of the in-shoot from which the workpiece is discharged, and conveying the workpiece to the predetermined supply position; A loader blade for transporting an object from the discharge port of the in-shoot to the predetermined supply position; and A workpiece jump-out prevention mechanism urged in a direction to stop the transport of the workpiece conveyed in the transport path and facing the workpiece through the transport path; At the supply position of Conveying apparatus comprising a workpiece biasing plate workpiece is biased to be retained.