Rodless cylinder

Abstract

A rodless cylinder includes a cylinder seat, a sliding block unit, and a piston unit arranged in the sliding block unit. The cylinder seat extends in a length direction, is hollow, and includes an outer surface and an inner surface which are spaced from each other, and two slope units which are spaced from each other in a width direction and incline from the outer surface to the inner surface; andthe inner surface defines a cylinder channel; the slop units match each other and define a sliding way which communicates with the cylinder channel and an external environment; the sliding block unitis arranged in the cylinder channel and the sliding way, and has two supporting slopes which are spaced from each other and pressed against the slope units; the supporting slopes can distribute stress on the sliding block unit to the slope units; and the stress load of the sliding block unit is reduced, and the loading gravity and the durability of the sliding block unit can be improved.

Description

technical field [0001] The invention relates to a driving device capable of driving other components to act, in particular to a pneumatic or hydraulic rodless cylinder. Background technique [0002] refer to figure 1 , China Taiwan Announcement No. 346527 patent case, has disclosed a kind of rodless cylinder in the past. The conventional rodless cylinder includes a cylinder base 11 extending forward and backward, and a slider 12 disposed in the cylinder base 11 and capable of sliding forward and backward in the cylinder base 11 along the length direction of the cylinder base 11 . The cylinder block 11 includes an outer surface 111 and an inner surface 112 spaced apart from each other, and two connecting surfaces 113 facing each other and connected between the outer surface 111 and the inner surface 112 . The inner surface 112 defines a cylinder passage 114 extending longitudinally. The connecting surface 113 cooperates to define a slideway 115 that communicates with the c...

AI Technical Summary

Problems solved by technology

[0003] In this conventional rodless cylinder, since the middle block 123 is thinner and more fragile and suspended in the air without being supported by the connection surface 113, the connecting portion between the middle block 123 and the lower block 121, and the The connection between the middle block 123 and the upper block 122 will bear greater stress and be easily damaged

In addition, because there is friction between the upper block 122 and the outer surface 111, and there is also friction between the lower block 121 and the inner surface 112 (the contact part is not shown), so the conventional rodless cylinder is in operation. When it needs a larger air pressure or hydraulic pressure to drive, it needs to be improved

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