JPH0232923Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to an adjustment device that can convert rotary motion into linear motion and freely change not only the stroke of the linear motion but also the starting point and stopping point. It is something.

[Conventional technology]

For example, when painting workpieces transported by a trolley conveyor on a painting line with a nozzle that slides vertically, the nozzle stroke distance and speed depend on the size of the workpieces, the number of objects hung on a hanger, etc. , the starting point, stopping point, etc. are adjusted each time to prevent loss of paint and to ensure uniform application.

In the above adjustment method, in order to change the rotational motion of the motor into linear motion, the rotation of the motor itself must be reversed, or the meshing of gears, etc. can be changed using an electromagnetic clutch without changing the rotation of the motor. However, both require an electric limit switch or an air limit valve.

[Problem that the invention attempts to solve]

There was a problem in that it took time and effort to adjust the movement of the limit switch, and it was not possible to adjust it easily and quickly.

Additionally, in painting, there was a problem in that electrical limit switches could not be used for safety reasons.

[Means for solving problems]

In order to solve the above problems, this invention includes a first running belt and a second running belt that are arranged in parallel and an endless shape, a drive device that is installed to drive the first running belt, and a drive device that runs the first running belt. a rod rotatably attached at both ends to the first running zone and the second running zone so as to cause the rod to travel back and forth through the second running zone;
It is composed of a transmission provided to drive in reverse, and an endless third running zone that is driven back and forth by the output shaft of this transmission.

[Effect]

When the drive device travels in the first traveling zone, the upper end connection point of the rod moves on the traveling line of the first traveling zone, so the rod repeatedly rises and descends, and moves to the second traveling zone. Run back and forth.

As a result, the input shaft of the transmission is alternately driven in forward and reverse directions, and the third traveling zone, which is transmitted from the output shaft, travels back and forth.

Further, when adjusting the reciprocating stroke of the third travel zone, the transmission is decelerated or accelerated.

Furthermore, when adjusting the traveling starting point and stopping point of the third traveling zone, the upper end connecting point of the rod is moved to the lowest dead center, and then the third traveling zone is manually operated.

〔Example〕

In the figure, reference numeral 1 denotes an endless first traveling zone that is driven by a drive device 2.

The drive device 2 described above is composed of a motor 3 and a chain 5 extending between the output shaft of the motor 3 and the drive shaft of the first running zone 1 in the case shown in the figure. You may also do so.

Reference numeral 6 denotes an endless second running zone that is arranged parallel to the first running zone.

Reference numeral 7 designates a rod rotatably connected at both ends to the first running zone 1 and the second running zone 6 via a pin 8 so that the second running zone 6 travels back and forth as the first running zone 1 travels.

Reference numeral 9 denotes an endless third running zone which is arranged in parallel to the second running zone 6.

In the illustrated case, a plate 10 is attached to one side of the parallel portion of the third running belt 9, and a rotor 11 is provided below both sides of the plate 10.
When the plate 10 is guided by the guide rail 13 of the frame 12, the plate 10 can be reciprocated along a fixed line.

Reference numeral 14 denotes a transmission that alternately drives the input shaft 15 in forward and reverse rotations as the vehicle travels in the second travel zone 6, and causes the output shaft 16 to travel in the third travel zone 9.

In the case shown in the figure, the transmission 14 described above can be switched between high and low speeds using the lever 14' on the right side, and can be shifted between two stages using the lever 14'' on the left side. It is also possible to use a type in which the speed is changed by the following method.

Also, the first running zone 1, the second running zone 6, and the third running zone 9
It consists of a pair of sprockets and an endless chain extending between the sprockets.

In the illustrated case, since the above mechanism is used as a coating machine, a cylindrical guide member 17 is attached to the plate 10.
The nozzle A is supported by the tip holder 21 of the rack rod 18 passed through the guide member 17. The positioning can be performed by sliding it forward and backward together with the rack rod 18.

The lower front end of the installation frame 12 of the mechanism is rotatably attached to the front end of the upper surface of the pedestal 22 via a pin 23, and a male screw is screwed into a female screw 26 which is swingably attached to the pedestal 22 via a pin 25. When the screw 27 is rotated and the link 28 is extended or contracted, the frame 12 is placed in a forward tilted position (the state shown by the chain line in Figure 1), and the upper and lower parts of the part to be painted are coated with a uniform coating. be able to.

Next, the adjustment method will be explained.

When the first traveling zone 1 is driven by the operation of the drive device 2, the second traveling zone 6 repeatedly travels back and forth due to the rod 7 which alternately repeats downward movement and upward movement.

Therefore, the input shaft 15 of the transmission 14 is driven alternately in forward and reverse directions, so that the third traveling zone 9 repeats reciprocating motion.

The running length of the third running zone 9 is determined by changing the speed of the transmission 14 between speed increase and deceleration.

In addition, in order to adjust the running starting point and stopping point of the third running zone 9, first, the first running zone 1 is adjusted so that the upper end connecting point of the rod 7 is located at the bottom dead center of the first running zone 1 and stops. Stop driving.

Thereafter, the transmission 14 is set to neutral, and the plate 10 is moved to a predetermined position, that is, the starting point, while rotating the output shaft 16 using the handle 16'.

〔effect〕

As described above, according to the stroke adjustment device according to the present invention, the travel stroke of the third travel zone can be adjusted by changing the speed of the transmission.

Further, when the upper end connecting point of the rod is located at the bottom dead center of the first running zone to stop the operation of the drive device, and then the transmission is set to neutral and the third running zone is manually driven, the third running zone is starting point,
The stopping point can be changed freely.

[Brief explanation of the drawing]

FIG. 1 is a side view of the stroke adjusting device according to the invention, FIG. 2 is a front view thereof, and FIG. 3 is a perspective view showing the main parts of the same. 1... First running zone, 2... Drive device, 6...
...Second running zone, 7... Rod, 9... Third running zone, 14... Transmission.

Claims (1)

[Scope of utility model registration request] A first running belt and a second running belt arranged in parallel with each other in an endless shape, a drive device provided to run the first running belt, and a drive device provided to make the second running belt travel back and forth as the first running belt runs. A rod rotatably attached at both ends to a first running zone and a second running zone, a transmission provided to drive an input shaft alternately in forward and reverse directions as the rod runs in the second running zone, and this transmission. An endless third motor is driven back and forth by the output shaft of
A stroke adjustment device consisting of a running belt.