问题描述:
英语翻译
The invention refers to an automatic control device for a bending-machine intended for the production of concrete reinforcement loops of bar or wire material,in which all the bending processes necessary to the production of a loop as regards the lengths of the individual sides of the loop,the sense of direction of the individual bending processes and the amount of the angle of bend,as well as the process of severing the finished loop from the bar or wire material can be present.
Bending-machines are known which have sequence control mechanisms which establish a quite definite succession of actions of the individual tools of the bending-machine.For presetting the length of travel by which the bar material to be bent must be advanced between the successive bending processes in order to obtain the desired lengths of the sides between bends,as well as for presetting the amount of each angle of bend,in the known control mechanisms drums are employed which are driven by step-switch mechanisms and along the circumferences of which stops or micro-contacts are arranged,so that they can be moved and fixed.These drums,after each operating cycle of the bending-machine move forward in a partially step-wise manner,so that the next stop or the next micro-contact arrives in the operating position.
Contacts or stops which,in dependence upon the feed stroke covered by the bar material to be bent,or upon the angle of pivot turned through by the bending tool,are moved along a track running parallel with the associated drum,cooperate with the stops or microcontacts on the drums.As soon as associated stops engage,or associated microcontacts coincide,the preset feed stroke of the bar has been covered or the bending tool has turned through the preset angle of pivot,and the next working step provided for in the sequence control is automatically introduced.
These known control mechanisms suffer from several disadvantages.The setting and fixing of the stops or microcontacts along the drums which are often not readily accessible is difficult,and the supposed number of possibilities for the desired setting is limited by the available circumference of the drum.But above all because of the relatively large number of setting processes,rational production of different loops is not possible.
The invention refers to an automatic control device for a bending-machine intended for the production of concrete reinforcement loops of bar or wire material,in which all the bending processes necessary to the production of a loop as regards the lengths of the individual sides of the loop,the sense of direction of the individual bending processes and the amount of the angle of bend,as well as the process of severing the finished loop from the bar or wire material can be present.
Bending-machines are known which have sequence control mechanisms which establish a quite definite succession of actions of the individual tools of the bending-machine.For presetting the length of travel by which the bar material to be bent must be advanced between the successive bending processes in order to obtain the desired lengths of the sides between bends,as well as for presetting the amount of each angle of bend,in the known control mechanisms drums are employed which are driven by step-switch mechanisms and along the circumferences of which stops or micro-contacts are arranged,so that they can be moved and fixed.These drums,after each operating cycle of the bending-machine move forward in a partially step-wise manner,so that the next stop or the next micro-contact arrives in the operating position.
Contacts or stops which,in dependence upon the feed stroke covered by the bar material to be bent,or upon the angle of pivot turned through by the bending tool,are moved along a track running parallel with the associated drum,cooperate with the stops or microcontacts on the drums.As soon as associated stops engage,or associated microcontacts coincide,the preset feed stroke of the bar has been covered or the bending tool has turned through the preset angle of pivot,and the next working step provided for in the sequence control is automatically introduced.
These known control mechanisms suffer from several disadvantages.The setting and fixing of the stops or microcontacts along the drums which are often not readily accessible is difficult,and the supposed number of possibilities for the desired setting is limited by the available circumference of the drum.But above all because of the relatively large number of setting processes,rational production of different loops is not possible.
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