JPS5939491Y2 - table rotation device - Google Patents

Description

[Detailed explanation of the invention] This invention uses automotive window glass and panels on the L of the table.
Alternatively, you can place materials such as residential plywood on the table to create an I
I! The present invention relates to a table rotation device that enables work such as applying adhesive to the peripheral edge of the table while rotating the table.

Conventionally, in this type of installation, only an electric motor type could be used as the rotational drive source.

However, the conventional device has the following drawbacks.

■ The rotation of the sprocket that rotates the table can only be set at a certain speed.

Therefore, in the case of parts with complex edges, it may take longer to apply adhesive in some places (for example, at the corners of a window pane), but because the movement speed is the same in other parts, it may take longer for the operator to apply the adhesive. I couldn't keep up with this.

■ Since the rotation of the sprocket is constant, the circumferential speed of the glass periphery is also constant, and when the glass comes to the corner, there is a sudden change in the rotation speed of the daple, which causes inertia to act on the arm, causing abnormal vibrations, blurring, etc. occurs, resulting in poor workability.

■ Since the electric motor rotates at high speed, a reduction gear with a large reduction ratio must be attached to it and housed in the main body, making the device large.

The object of the present invention is to provide a table rotation device that eliminates the drawbacks of the conventional devices and allows smooth operation.

Embodiments of the present invention will be described below with reference to the drawings.

Wheels 11 are provided at the bottom of the pedestal 10, and the pedestal 10 is configured to be movable as required.

The tail end of the primary arm 12 is rotatably provided with respect to the pedestal 10 via an arm support bearing 13.

The tail end of the secondary arm 14 is rotatably connected to the tip of the primary arm 12.

An arm support 15 is provided at the connection point of the primary and secondary arms 12,14.

The lower end of the arm support 15 is slidably placed on the pedestal 10.

A similar arm support 16 is also provided at the tip of the secondary arm 14.

Further, a table 17 is rotatably provided at the tip of the secondary arm 14 at approximately the center of the lower surface of the table 17.

In the illustrated example, two vacuum cups 18 are fixed to one side of the table 17.

The vacuum cup 18 is used to suction members such as window glass, plywood, panels, etc. as necessary.

The figure shows an automobile window glass 20 whose shape has changed greatly in two dimensions.

Further, a chain 21 is disposed on the peripheral wall surface of the table 17 over the entire circumference.

The sprocket 22 is configured to mesh with the chain 21 at all times.

The illustrated table 17 has a peripheral wall formed of a plate, and the -F side of the table 17 is open.

Inside the plate 1 forming the peripheral wall surface of the table 17, a guide roller 23 (
The arrangement is shown in Figure 2 (see 11a).

A presser roller 24 is attached to each side of the sprocket 22.
．． 25 is the provision.

These presser rollers 24, 25 are respectively connected to the support arm 2.
6.27.

These support arms 26, 27 move together around fulcrums 28, 29 under the action of air cylinders 30.

Therefore, as long as the air cylinder 30 is energized, the play 1 around the table 17 is moved by the drive of the sprocket 22 while being constantly pressed toward the guide roller 23 by the holding rollers 24 and 25.

During the movement, whenever the normal to the peripheral wall surface of the table 17 (line I, Rollo, etc. in FIG. 2) coincides with the line connecting the axis of the guide roller 23 and the axis C of the sprocket 22, That's what I do.

Due to this movement, the rotation center of the table 17, that is, the arm support 16 moves on the pedestal 10 with a complicated trajectory.
Since the arm support 16 is slidable on the pedestal 10 as described above, the above movement is possible.

Note that the operator should ensure that the tip of the coating nozzle is located at sprocket 2.
Work by holding it in your hand so that it is approximately at the true size of 2.

The rest of the configuration is almost the same as the conventional device.

Now, the sprocket j22 is synchronously driven via a shaft 31 using a hydraulic motor 32 as a drive source.

A control device is provided to control the oil 1 emulator 32 so that the rotational speed of the sprocket 22 can be increased or decreased.

The illustrated example of the control device includes a control panel 33, an oil bed unit I/34, a synchronous cam mechanism 35 as means for detecting the corner, and others.

In the figure, 36 is a start switch, 37 is a phytoswitch, 3
8 is a four-way valve, 39 is an electric motor, 40 is a hydraulic pump, 41 is interposed in the hydraulic oil circuit (in this example, the return side) between the hydraulic pump 40 and the hydraulic motor 2, and is connected to the synchronous cam mechanism 35. A flow control valve that operates in response to a mechanical signal as described later, 43 is a cam follower, 42 is an adjustable fixed throttle valve, 44 is a manual two-way valve, 45 is a number of protrusions corresponding to the corners of a window glass. No cams shown.

The synchronous motion of the shaft 31 is transmitted to the synchronous cam mechanism 35 via the sprocket and chain 46, where it is decelerated and causes the cam 45 to rotate concavely.

Now, the operation of the above-mentioned device will be explained.

First, a predetermined portion of the window glass 20 is fixed by suction to the vacuum cup 18 on the daple 17.

On the other hand, when the start switch 36 of the control panel 33 is turned on, the electric motor 39 of the hydraulic unit 34 begins to rotate, and the extraction pump 40 connected thereto also rotates at the same time, generating one oil force.

When the foot switch 37 is stepped on, the four-way valve 38 is operated, pressure oil is sent to the hydraulic motor 32, and the hydraulic motor 32 starts rotating at a constant rotation speed regulated by the fixed throttle valve 42.

As a result, the axis 31 is fr? The sprocket 22 that is directly connected to the sprocket rotates once, but the sprocket 22 that is directly connected to the sprocket rotates concavely and drives the chain 21 that is attached to the table 17.

Thus, the table 17 and the window glass 20 begin to rotate.

When the corners 20a, 20b...20h of the window glass 20 come close to the adhesive application nozzle position, that is, near the sprocket l-22, the protrusion of the cam 45 of the synchronous cam mechanism 35 pushes the cam follower 43, thereby causing the flow controller I - The roll valve 41 is activated to narrow the back 1- of the hydraulic motor 39, and the hydraulic motor 32 simultaneously rotates at a low speed, so that the corner of the window glass 20 can be sufficiently coated with adhesive.

Further, when the corner of the window glass 20 passes, the cam follower 43 is returned by the cam 45, the shutter 11 is opened, and the extracting pressure motor 32 becomes steady rotation.

Note that for window glass, etc. where the curvature of each corner is not so large, there is no need to control the speed of the hydraulic motor.)
Therefore, in such a case, if the two-way valve 44 is operated manually, the back pressure will remain constant due to the throttling action of the fixed throttle valve 42 regardless of the synchronous cam mechanism 35, so the extraction motor 32 will It becomes a constant rotation.

In the device of the present invention, a hydraulic motor capable of conventionally low-speed, [at-torque] operation is used as the drive source for the concave table, so there is no need to attach a reduction gear, and even if it is attached, it is small. The device can be configured compactly since only one thing is needed.

In addition, since the oil pressure motor is easy to control speed and has excellent response, when the corner of a member such as glass comes to a predetermined position, the table can be decelerated immediately, and then returned to its original position. As a result, coating quality can be easily ensured.

Further, in the embodiment, a two-way valve is provided in parallel with the synchronous cam mechanism, so that by switching the two-way valve, it is possible to select between constant simultaneous diversion and acceleration/deceleration simultaneous rotation.

Also, if the control device is placed separately from the table 17 etc.,
The overall size can be made more compact.

[Brief explanation of drawings]

FIG. 1 is a perspective view schematically showing a table rotation device according to the present invention; FIG. 2 is a plan view showing the table rotation device with a portion omitted. 12...Primary arm, 14. Curved - secondary arm,
17...Song table, 18...Bagyumu cup, 2o...Song ``Nindo glass,'' 21...Song chain, 22...Song subrokatsu l, 23...Guide roller, 24. 25... Curved presser roller, 32...
- Hydraulic motor, 33 - Control panel, 34... Hydraulic unit, 35... Synchronous cam mechanism.

Claims (1)

[Scope of utility model registration request] For attaching members with corners such as glass, plywood, panels, etc. to predetermined locations, the vacuum j and cup are fixed on a four-axis table, and a chain is placed on the peripheral wall of the table. In a table rotation device in which sprockets are always meshed and the sprockets are simultaneously driven by a drive source, when a hydraulic motor is used as the drive source, the corner portion is moved to a predetermined portion as the table rotates. A synchronous cam mechanism is provided to detect this, and a flow control valve is installed in the hydraulic oil circuit of the hydraulic motor and receives a mechanical signal from the synchronous force mechanism to throttle this circuit. Characteristic table rotation device.