JPH0241885A - Tubeless transfer unit - Google Patents

Abstract

PURPOSE:To prevent the dispersion in vacuum reaching times and the reduction of a absorption power by performing the feeding of a vacuum gaseous body without any tube for air pressure piping, by engaging the tip parts of upper and lower transfer blocks with the vacuum gaseous body feeding ports of the respective vacuum gaseous body feeding units at advance side and retreating side. CONSTITUTION:When a vacuum pressure is fed to the advance side vacuum feeding unit 4 in the state of engaging with upper and lower transfer blocks 1, the vacuum gaseous body is flowed into a suction pad 3 to suck a work. Also, the work is placed at specified position by feeding vacuum pressure to the retreat side vacuum feeding unit 5 in the state of engaging with the transfer blocks 1 and performing the feeding by changing over to a compressed gaseous body.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a tubeless transfer unit that transfers a workpiece by vacuum suction.

2. Prior Art The tube piping used in a conventional pneumatic transfer unit is shown in FIG. Initially, a transfer pad 12 was attached to the tip of the vertical control block 11 of the transfer unit, and the vertical movement section 13 and the front and rear movement section 14 were moved by spiral tubes 15 for expansion and contraction.

Problems to be Solved by the Invention However, the spiral tube has problems in that the total length of the tube is long, resulting in a decrease in suction force and a delay in the time required to reach vacuum until suction.

An object of the present invention is to provide a tubeless transfer unit that solves the problems of the conventional example described in -F, and can reduce the decrease in suction force and the delay in reaching vacuum until suction.

Means for Solving the Problems A vacuum air intake port having a concave shape at both ends, a gas leak prevention valve at both ends of a gas passage communicating the vacuum air intake ports, a suction pad attached to the lower end, and upper and lower, Left and right: A pair of upper and lower transfer blocks that are movable, and a forward side and a backward side that have a tip that fits into the vacuum air intake port and can slide up and down while being held from below by a spring. It is characterized by having a vacuum air supply unit.

Operation Since the present invention has the above-mentioned configuration, it moves forward (III vacuum air supply unit 1) in a state fitted with the upper and lower transfer blocks.
When vacuum pressure is supplied to the suction pad, the vacuum air flows into the suction pad and adsorbs the workpiece, and while it is fitted with the upper and lower transfer blocks, 17 pneumatic pressure is supplied to the vacuum supply unit on the retreating side, and the switch is switched to compressed gas. If the workpiece is supplied by the operator, the workpiece will be placed at a predetermined position.

Embodiment An embodiment of the present invention will be described below with reference to FIG. Reference numeral 1 designates upper and lower transfer blocks that are attached to the upper and lower tips of the transfer unit and have concave vacuum air intake ports la and lb on the left and right end faces. 2 is the JT air intake port 1a;
This is a gas leak prevention 1F valve attached to both ends of the gas passage 1c that communicates with the lb. 3 is a suction pad attached to the upper and lower transfer blocks 1 by adhesive. Reference numeral 4 denotes a forward-side vacuum air supply unit, and its tip 4a has a convex shape, and fits into the vacuum air intake port 1a of the upper and lower transfer blocks 1. Reference numeral 5 denotes a retreat side vacuum air supply unit, and its tip 5a has a convex shape, and fits into the vacuum air intake port 1b of the upper and lower transfer blocks 1. 6 is a holder that floats the forward vacuum supply unit 4 and the retreat vacuum supply unit 5 in the vertical direction and holds them at a predetermined height.
This spring is attached to the outer periphery of the vertical slide shaft 7. Next, the operation of this embodiment will be explained. First, the transfer upper and lower blocks 1 move laterally in the direction of the forward side vacuum air supply unit, and the forward side vacuum air supply unit: the front end 4a of the L knit 4 and the J (air body intake port 1a) of the transfer upper and lower block 1.
and fit together. Vacuum pressure is supplied at that timing.

Alternatively, the gas leak prevention valve 2 is opened at the same time as the twisting, and the vacuum IE reaches the suction pad 3 and suctions the workpiece (not shown). ``Transfer'' 2 The lower block 1 rises and moves laterally to the retreat side. At this time, the upper and lower transfer blocks 1 and the forward vacuum supply unit 4 are separated, and at the same time, the gas leakage prevention valve 2 operates to maintain the vacuum pressure inside the suction pad 3. Next, the upper and lower transfer blocks move laterally in the direction of the retreating side vacuum air body supply unit 5, and the vacuum air body receiving port 1b and the tip end 5a of the retreating side vacuum air body supplying unit 5 rise up against each other. Then, vacuum pressure is supplied at that timing. Move on to the next one! , 1-Lower block 1] The tool 1 descends together with the retreat side vacuum supply unit 5, and switches from vacuum pressure to compression pressure at the timing of the lowering limit, thereby releasing the suction pad 3 and the workpiece (not shown). is separated and the [nork is transferred to a predetermined position (1'L).Next, the transfer upper and lower block 1 returns to its original height and returns to the direction of the forward side vacuum air supply: L unit 4. By horizontally moving \, it separates from the retreat side vacuum air supply unit 5, and the above-mentioned operation of the studs is repeated.

Effects of the Invention According to the present invention, as described above, the vacuum air body is supplied by fitting the tip of the upper and lower transfer blocks with the vacuum air intake ports of the forward and retreat side award air body supply units. Therefore, the tube for pneumatic piping is no longer needed.
It is possible to prevent variations in the time required to reach vacuum and a decrease in suction power.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a tubeless transfer unit according to an embodiment of the present invention, and FIG. 2 is a perspective view of a conventional transfer unit. 1... Transfer upper and lower blocks, 1a, 1b...
... Vacuum air intake port, 2... Gas leak prevention valve,
3... Suction pad, 4... Advance side vacuum body supply unit, 4a... Tip part, 5...
...Backward side vacuum air supply unit, 5a...
Tip, 6... Spring.

Claims (1)

[Claims] It has a concave vacuum air intake port at both ends, a gas leak prevention valve at both ends of the gas passage communicating with the vacuum air intake port, a suction pad attached to the lower end, and is movable up and down and left and right. It is equipped with a transfer upper and lower block, and a pair of vacuum air supply units on the forward side and the backward side, each having a tip that fits into the vacuum air body receiving port and capable of sliding up and down while being held from below by a spring. A tubeless transfer unit characterized by: