Clamping and unloading mechanism

Abstract

The invention relates to the field of mechanical equipment, and discloses a clamping and unloading mechanism. The clamping and unloading mechanism comprises a fixing block and clamping blocks which are elastically arranged on the fixing block and can be close to or away from each other. The upper end face of the fixing block is elastically attached to the bottom of a workpiece. A clamping, suckingand ejecting mechanism is arranged at the position, in the center of the space between the two clamping blocks, of the fixing block. The clamping, sucking and ejecting mechanism comprises a concave cavity sunken in the upper end of the fixing block, an ejecting block stretching and retracting in the concave cavity in a sealed manner, an ejecting spring arranged between the bottom of the ejectingblock and the bottom of the concave cavity, and a traction mechanism arranged below the fixing block and used for driving the ejecting block to move towards the bottom of the concave cavity. When theejecting spring is in a reset state, the ejecting block partially stretches out to the upper end of the fixing block to eject the workpiece out, and when the ejecting block is close to the bottom of the concave cavity, negative pressure is formed at an opening of the concave cavity to suck the bottom of the workpiece. By means of the clamping and unloading mechanism, the clamping and sucking capacity of products can be obviously improved, and automatic unloading of the products is achieved while the products are prevented from being damaged.

Description

technical field [0001] The invention relates to the field of mechanical equipment, in particular to a clamping and unloading mechanism. Background technique [0002] The fixture is a mechanical structure used to fix the workpiece and avoid the displacement of the workpiece in the process of mechanical manufacturing. Therefore, in the process of industrial production and processing, many processing procedures such as polishing, grinding and cutting of the workpiece require the use of fixtures. [0003] Existing fixtures include rigid clamping and elastic clamping. In the rigid clamping structure, the clamping block generally moves to abut against both sides of the workpiece and then is limited by a limiting mechanism to achieve clamping of the workpiece. For example, using studs Screw propulsion clamps the workpiece; in the elastic clamping structure, springs are generally used for elastic clamping, for example, a spring clamp disclosed by a Chinese patent whose notification ...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the disadvantages in the prior art that the rigid fixture is easy to damage the workpiece, while the elastic fixture is easy to cause the workpiece to shift, and the above two kinds of fixtures cannot realize the automatic unloading of the workpiece after processing, and provides a clamping and unloading mechanism. The clamping effect is better than that of elastic clamps, the damage to the workpiece is less than that of rigid clamps, and the workpiece can be automatically unloaded after operation

Images