Development Of Automatic Loading Device For Carton Products

The automatic loading and unloading technology of carton products has always been the focus of attention,and it is also an urgent problem to be solved for many enterprises.At present,some functional solutions have appeared at home and abroad,but they have not been widely promoted due to limited technology maturity and investment return cycle.Based on the actual production situation of an enterprise and the actual investigation,this thesis designs a full-automatic loading machine for carton products.The work is mainly carried out from two aspects: 1)combined with the existing product types of loading device in the market,carry out comparative analysis,and determine the development direction and main parameters of loading device based on the actual research;2)use professional knowledge to establish an analysis model of the loading device and carry out theoretical analysis and calculation.The prototype test is carried out for the key delamination fixture and extension shaft structure to verify the accuracy of theoretical calculation.The main work done is as follows:（1）Market Research and analysis of loading device.Collect data on the existing types of loading device at home and abroad,and classify and compare them according to the size of loading units,so as to facilitate enterprises to select appropriate types of loading device according to actual needs.According to the actual production of an enterprise,sort out the data of products and vehicles,establish the principle model of loading device with Solidworks,and clarify the reasonable equipment parameter,which lays a good foundation for the development of loader.（2）The robot destacking fixture is analyzed and calculated.Before loading,the incoming materials are generally the whole stack of products.During the process of unpacking,there are problems such as damage of product cartons,loss of product cartons,large weight and size of fixtures and so on.This thesis presents an air bag clamping fixture,which can reduce the size and weight of the fixture.In this thesis,the mechanical model of fixture frame is established,and the stress and deformation analysis is carried out by using Hyper Works software.Through theoretical analysis and calculation,the suction cup and vacuum circuit are designed and selected.（3）Analyze and calculate the single axle extension adjustment module.The single axle extension shaft is an important part in the design of the truck loading device.The structure has a long extension arm and large weight at the end.The structural part has the problems of large deformation and affecting the positioning accuracy.At the same time,the contact tread of the extension shaft guide rail has the problems of large wheel pressure and poor service life.In this thesis,the finite element analysis of the extended shaft is carried out based on Hyper Works,and the optimization scheme is put forward from the aspects of the section size of the extended shaft,the contact hardness of the track tread and the contact area of the roller.Based on the above research,theoretical analysis and calculation,the project has carried out prototype trial production of key equipment delamination fixture and single shaft extension shaft.The stability of the delamination fixture is verified by the production practice,and the stress of the fixture frame and the single axis extension axis are counted and analyzed by the method of experimental measurement.The experimental results are basically consistent with the theoretical analysis,which proves that the delamination fixture and uniaxial extension module designed based on the theoretical analysis in this thesis can meet the actual production needs.Based on the theoretical analysis of this thesis,the trial production of the functional prototype of the whole loader can be carried out.