JPS5976747A - Loading device - Google Patents

Abstract

PURPOSE:To permit to carry in or carry out a work piece in a small space by a constitution wherein the device for carrying in or carrying out the work piece, such as an equi-speed ball joint outer race or the like, between a machine and a conveyor is provided with a slewing member consisting of an elevating member and two sets of work holding shafts at both ends of the elevating member. CONSTITUTION:The loading device 20, for carrying in-and-out the work piece W carried by a work carrying conveyor 17 between said conveyor 17 and a pair of work holding tubes 16 supported by a swing rest 15 so as to be capable of rotary indexing, is provided with the elevating member 22, elevated by a cylinder device 23 mounted on a base member 21. A support member 25 is secured to the elevating member 22 and a rotary shaft 26, rotated by the cylinder device 30 through a rack 29 and a pinion 28, is supported at the free end side of the member 25 while said shaft 26 is provided with a slewing arm 27 which is provided with two pairs of work holding shafts 33, 33, 34, 34 at both ends thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a loading device for loading and unloading workpieces such as constant velocity pole joins and outer rings between a machine and a conveying conveyor.

<Prior art> In general, in order to carry a workpiece such as a constant velocity hall joint outer ring between a machine and a conveyor, a rail is constructed across the machine, and the work is carried on this rail. The manipulator for transporting goods and the manipulator for transporting goods are each mounted in a movable manner, which increases the floor space and required space, and also requires a long loading time, resulting in an increase in non-processing time. was there.

<Object of the Invention> The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to reduce the loading time in a small space, and at the same time to reduce the variation in the dimensions of the workpiece. To provide a loading device capable of accurately loading a workpiece to a predetermined position within a machine regardless of the location.

<Example> Embodiments of the present invention will be described below based on the drawings.

In FIG. 1, 10 indicates a machine, and this machine 10
A tool stand 12 is installed on the head 11 of the spindle unit 1 on which a rotary tool 13 is attached.
4 is supported so that it can move forward and backward.

Further, on the head 11, a swing holding table 15 is mounted on the rotary tool I.
A pair of workpiece holding cylinders 16 are supported so as to be swingable around a horizontal axis perpendicular to the rotational axis of the ball joint 3, and a pair of workpiece holding cylinders 16 that house and hold a workpiece W as an outer ring of a constant velocity ball joint are mounted on this swingable holding stand 15. It is rotatably supported around an axis perpendicular to the swing axis of the movable holding table 15. The swinging movement of the swinging holding table 15 and the cutting operation of the rotary tool 13 form a pole rolling groove W1 on the inner peripheral surface of the bowl-shaped part of the workpiece W. When the workpiece W is being transported, it is indexed to a certain angular position where the axis of the workpiece W stored and held in the workpiece holding cylinder I6 is vertical.

Further, on the head 11, a general feeding conveyor 17 for the workpiece 1 is installed parallel to the swing axis of the swing holder 15. [1] - The crops W are sequentially fed 11i to the general feeding conveyor 17 with the pinch interval between the pair of workpiece holding cylinders 16 and the axis thereof being vertical. Furthermore, a workpiece W is held between the conveyor 17 and the swing holding table 15 on the head 11.
1. A coding device 20 is installed for receiving and exporting. The configuration of the loading device 20 will be explained below.

In FIG. 2, a pace member 2 of a loading device 20 is shown.
1 is equipped with an elevating member 22 so as to be slidable downward. A piston 24 is slidably fitted into the lifting cylinder 23 formed in the heath member 21 on the lifting member 22.
are connected to each other, and by the action of this lifting cylinder 23, the lifting part JfA22 is raised and lowered by a certain amount.

A support member 25 is fixed to the elevating member 22, and a rotary shaft 26 is rotatably supported on the support member 25 at an intermediate portion between the transport conveyor 17 and the swinging holder 15 about a vertical axis. A pivot arm 27 is provided at the bottom of the shaft 26 4J. A pinion 28 is formed on the rotating shaft 26, and this pinion 28 is meshed with a rack shaft 29.
This rank shaft 29 is coupled to a piston 31 that is slidably fitted into a turning cylinder 3o formed on the support member 25. The action of the swing cylinder 30 causes the swing arm 27 to rotate forward and backward by 180°.

A pair of workpiece holding shafts 33 are provided at one end of the rotating arm 27.
is fitted and held so that it can only slide in the vertical direction at the same pinch interval as the workpiece holding cylinder 16, and a pair of workpiece holding shafts 34 are provided at the other end, the same as the workpiece holding shafts 33. It is fitted and held so that it can only slide in a direction parallel to it at pinch intervals. A spring 35 (see Fig. 3) is inserted between each of the workpiece holding shafts 33, 34 and the swing arm 27, and the repulsive force of the spring 35 causes the workpiece holding shaft 33, 34 to normally move to the lower end. keeping.

As shown in detail in FIG. 3, the workpiece holding shaft 33 is formed with a clamping cylinder 4I, and a sliding body 43 fitted with a piston 42 that fits into the clamping cylinder 41 is attached to the workpiece holding shaft 33. It is slidably fitted.

A plurality of clamp claws 44 for gripping and clamping the outer periphery of the bowl-shaped portion of the workpiece W are pivotally mounted on the lower end of the workpiece holding shaft 33 on the circumference, and the clamp claws 44 are operatively linked to the sliding body 43. , is pivoted by the movement of the sliding body 43. An indexing shaft 45 extending vertically through the workpiece holding shaft 33 is rotatably and slidably supported on the sliding body 43, and the indexing shaft 45 is supported by a spring 4 inserted between the sliding body 43 and the indexing shaft 45.
It is normally held at the lower end by the repelling force of 6. A block 47 is fixed to the lower end of the indexing shaft 45, and a pair of engagement pins 48 that engage with the ball rolling groove W1 of the workpiece W are fitted into the block 47 so as to be slidable in the radial direction. There is.

The pair of engagement pins 48 are urged radially outward by the repulsive force of a spring 49 inserted between them, and the pins 48 are held at a position protruding from the outer surface of the block 47 by a predetermined amount. . A detection rod 50 is attached to the indexing shaft 45.
is slidably fitted therein, and this detection rod 50 is urged downward by the repulsive force of a spring 51 fitted between it and the indexing shaft 45. A conical surface is formed at the lower end of the detection rod 50, and this conical surface is engaged between the pair of engagement pins 48, and as the engagement pin 48 moves back and forth, the detection rod 50
is designed to be pivoted.

Corresponding to the upper end of the workpiece holding shaft 33, the pivot arm 27 has an indexing member in which a piston 52 is slidably fitted in a direction parallel to a line connecting the axes of the pair of workpiece holding shafts 33. A cylinder body 54 that forms a cylinder 53 is installed. One end of a pair of link members 56 is operatively connected to a piston rod 55 protruding from both sides of the piston 52, and the other ends of the link members 56 are inserted into the pair of workpiece holding shafts 33. The indexing shafts 45 are connected to the upper ends of the indexing shafts 45 respectively, and the indexing shafts 4
5 is rotated and indexed by a predetermined angle.

Further, although not shown in the drawings, the workpiece holding shaft 34 is formed with a clamping cylinder, similar to the workpiece holding shaft 33 described above, and a sliding body fitted with a piston that fits into this cylinder is the workpiece holding shaft. A plurality of circumferential clamp claws are pivotally attached to the lower end of the workpiece holding shaft 34, and are slidably fitted into the workpiece holding shaft 34 and pivoted by the movement of the slider.

However, since the workpiece holding shaft 34 is used for transporting the processed workpiece W from the machine 10 to the conveyor container 17, it is not provided with an indexing shaft or the like.

Note that 57 is a reference member attached to the lower surface of the workpiece holding shafts 33 and 34, and the reference surface formed on the lower surface of this reference member 57 is a reference member that is attached to the lower surface of the workpiece holding shaft 33 and 34.
It is designed to be joined to the top surface of the

Next, the loading operation of the workpiece W in the above configuration will be explained.

The ball rolling groove W1 of the workpiece W stored and held in the pair of workpiece holding cylinders 16 is machined into an arc shape by the rotary tool 13 by the cutting action of the rotary tool 13 and the swinging action of the swinging holding table 15. When machining of one workpiece W is completed, the workpiece holding cylinder 16 is rotated and indexed by a predetermined angle, and the next ball transfer groove Wl is machined in the same manner. When the machining of the plurality of ball transfer grooves W1 on the circumference is completed in this way, the swing holding table 15 is positioned at an angular position where the axis of the workpiece W stored and held in the workpiece holding cylinder 16 is vertical. Ru. During the above-described machining, the conveyor 17 is advanced by 2 pinches, and the two workpieces W to be machined next are moved between the pair of workpiece holding shafts 33.
The workpiece W is indexed downward, and waits in this state until machining of the workpiece W is completed.

Subsequently, due to the action of the lifting cylinder 23, the lifting member 2
2, the swing arm 27 is lowered by a certain amount, thereby storing the block 47 with the engagement pin 48 inserted into the bowl-shaped portion of the unprocessed workpiece W on the conveyor 17, and also lowering the workpiece holding shaft 33. A reference portion 57 attached to the lower end is pressed against the upper surface of the workpiece W by the repulsive force of the spring 35.

At the same time, the W half member 57 attached to the lower end of the workpiece holding shaft 34 is pressed against the upper surface of the machined workpiece W housed and held in the workpiece holding cylinder 16 by the repulsive force of the spring 35.

In this state, by the action of the indexing cylinder 53, the indexing shaft 45 is rotated and indexed by a predetermined angle via the link member 56. At this time, since the rotation of the workpiece W is restricted by the action of the spring 35, the block 47 is rotated relative to the workpiece W by the indexing of the indexing shaft 45. When the engagement pin 48 fitted into the block 47 corresponds to the ball transfer groove W1 formed on the inner periphery of the bowl-shaped part of the workpiece W, the engagement pin 48 is inserted into the spring 4.
9, the workpiece W is engaged in the ball rolling groove W1 by the repulsive force of the spring 35, and thereafter the workpiece W is pushed by the spring 35 through the engagement pin 48, overcoming the force and integrated with the indexing shaft 45. Rotation indexed. As a result, when the indexing shaft 45 is rotated to a predetermined angle, the ball rolling groove W1 of the workpiece W is indexed to a fixed angular position.

Thereafter, the sliding body 43 is slid downward by the action of the clamping cylinder 41 of the art work holding shaft 33, 34, and the clamp claw 44 is thereby rotated to separate the unprocessed and processed workpieces W. The outer periphery of the bowl-shaped portion is gripped and clamped. Subsequently, due to the action of the lifting cylinder 23, the rotating arm 27 is raised by a certain amount together with the lifting member 22, and the workpiece W clamped to each workpiece holding shaft 33, 34 is lifted from the conveyor container 17 and the workpiece holding cylinder 16. Will be left.

When the lifting member 22 reaches the rising end, the turning cylinder 30
The turning arm 27 is rotated 180 degrees by the action of , and then the elevating member 22 is lowered again by the action of the elevating cylinder 23 , and the unprocessed workpiece W clamped on the workpiece holding shaft 33 is held by a pair of workpieces. At the same time as being carried into the cylinder 16, the machined workpiece W clamped on the workpiece holding shaft 34 is carried out to the conveyor container 17, and then the clamp claw 44 is unclamped by the action of the clamping cylinder 41.

The workpiece W carried into the workpiece holding tube 16 is clamped by a chuck device built into the workpiece holding tube 16 after unclamping by the clamp claw 44. The workpiece W has a spring 35
Since the pressing action causes the workpiece W to be crimped against the mounting reference surface in the workpiece holding cylinder 16, even if the clamp claw 44 is unclamped, the workpiece W will not be angularly misaligned. Even if the height with respect to the workpiece holding cylinder 16 is slightly uneven, or even if there is variation in the height dimension of the workpiece W, the workpiece W can be reliably placed on the reference plane in the workpiece holding cylinder 16. You will be able to crimp it.

When the workpiece W carried into the workpiece holding cylinder 16 is clamped by the chuck device, the elevating member 22 is raised by the action of the lifting cylinder 23, and the workpiece W carried into the workpiece holding cylinder 16 in this state is lifted. Processing of W is started. During this machining, the swing arm 27 is moved to the swing cylinder 3.
0 and returned to the original position, the conveyor conhair 17 is advanced by two pitches, and a new unprocessed workpiece W is indexed below the workpiece holding shaft 33.

In the above embodiment, an indexing shaft 45 for rotationally indexing the block 47 having an engaging pin 48 fitted therein is provided in the workpiece holding shaft 33, and a device for driving this indexing shaft 45 is provided as a rotating arm. 27, the indexing mechanism for indexing the ball rolling groove W1 of the workpiece W to a certain angular position is equipped on the transfer controller 717 side, and the indexing mechanism is installed on the workpiece holding shaft 33 side. It is also possible to provide only the engagement pin 48 that engages with the ball transfer groove W1 in a fixed manner.

Further, in the above embodiments, a constant velocity ball joint wheel was used as an example of the workpiece W, but it goes without saying that the present invention is not limited to the loading of a constant velocity ball joint outer ring.

<Effects of the Invention> As described above, the present invention has a configuration in which a rotating member having two sets of workpiece holding shafts provided at both ends is rotatably provided in an elevating member that can be raised and lowered relative to a heath member. Therefore, the workpiece can be quickly loaded and unloaded between the machine and the transport conveyor, and this loading can be carried out in a small space.

Moreover, according to the present invention, the workpiece holding shaft is held so as to be slidable in a direction parallel to the rotation axis of the rotation member, and is biased downward by the biasing means. It has the feature that the workpiece can be accurately placed in a predetermined position within the machine regardless of variations.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a diagram showing the entire machine equipped with the device of the present invention, and FIG. 2 is a diagram showing II of FIG.
- An enlarged cross-sectional view of the loading device taken along the line m, FIG. 3 is an enlarged cross-sectional view taken along the line m-m in FIG. 2, and FIG. . 10... Machine, 20... Rope ink device, 21
... Heath member, 22... Elevating member, 23... Elevating cylinder, 26... Rotating shaft, 27... Swivel arm, 30... Cylinder for 11 times, 33.34... Workpiece holding shaft, 35... Spring, 41... Clamp cylinder, 44... Clamp claw, 48... Engagement pin, 57... Reference member, W... Workpiece. Patent applicant Toyota Machinery Co., Ltd. Figure 2 Figure 3 [-]

Claims (2)

[Claims] (1) A loading device for loading and unloading workpieces between the workpiece storage section of the machine and the tM transport conveyor,
An elevating member is mounted on the base member so as to be movable up and down, and a rotating member is mounted on the elevating part so as to be movable around a vertical axis at an intermediate position between the workpiece storage section and the conveyor conveyor,
Two sets of workpiece holding shafts corresponding to the transfer conveyor and the workpiece storage section are provided at both ends of this turning member so as to be slidable in a direction parallel to the turning axis of the turning member, and these workpiece holding shafts are lowered. a reference surface to be joined to the upper surface of the workpiece is provided at the lower part of the workpiece holding shaft; a clamp claw for clamping the workpiece is provided on each of the workpiece holding shafts, and A loading device, wherein at least one of the two sets of workpiece holding shafts is provided with an engaging member that engages with an engaging portion of the workpiece. (2) The loading device according to claim 1, wherein the engaging member is provided on an indexing shaft that can be rotated to index the engaging portion of the workpiece to a fixed angular position. .