The cylinder of Pneumatic press and drift syndeton
Technical field
The present invention relates to a kind of punch press, the cylinder and the syndeton between the drift that specifically relate on a kind of Pneumatic press are improved, and belong to the punch press technical field.
Background technology
In machining or other field, punch press is a very important production equipment.Pneumatic press mainly drives the drift lifting by the motion of cylinder, impacts downwards again, finishes the processing of parts.At present being connected by contiguous block between the cylinder of punch press and the drift realizes, structure as shown in Figure 1, Fig. 1 is the cylinder of punch press of the prior art and the syndeton sketch of drift.Cylinder is positioned at the both sides of drift 2 upper ends, the top of cylinder piston rod 1 is provided with I-shaped connector, contiguous block 3 is fixed on the upper end of the gripper shoe 4 of drift 2 both sides, on contiguous block 3, be milled with T-slot, the opening of T-slot makes progress, and the I-shaped connector on the top of cylinder piston rod 1 inserts in the T-slot of contiguous block 3.By the stretching motion of cylinder piston rod 1, drive contiguous block 3 and upwards lifting of drift 2, drift impacts downwards, thereby finishes the punching press action.
Present this syndeton, when for a certain reason, when the position that drift 2 moves downward exceeds the stroke of cylinder piston rod 1, can cause cylinder piston rod 1 to break or cause contiguous block 3 to give birth to and pull out from drift 2, cause the syndeton of drift upside to damage, thereby drift can't be repaired; When the position that drift moves upward exceeded the stroke of cylinder piston rod 1, drift can also can cause the damage of cylinder with cylinder jack-up.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of new cylinder and the syndeton between drift, when preventing position limit that drift moves up and down, drift or cylinder are caused damage.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of cylinder of Pneumatic press and drift syndeton, the diameter on top that it is characterized in that cylinder piston rod is provided with external screw thread less than the diameter of rear end on the top of piston rod; Connecting plate is the flat metal derby, on connecting plate, be provided with two bolt mounting holes and a pilot hole, connecting plate is by two tops of passing the gripper shoe that is bolted to the drift both sides of bolt mounting holes, pilot hole stretches out the both sides of gripper shoe, pilot hole is passed on the top of cylinder piston rod, attaching nut on the external screw thread on piston rod top.
The cylinder of aforesaid Pneumatic press and drift syndeton is characterized in that the side that described connecting plate is provided with bolt mounting holes is a rectangle, and a side that is provided with pilot hole is for semicircle.
The invention has the beneficial effects as follows: the present invention forms an elongated portion with the reduced on the top of piston rod, cooperates with pilot hole, when punch stroke exceeds,, only connecting plate is deformed downwards because connecting plate is thinner, cushion, can not cause the damage of drift or cylinder; When punch stroke upwards exceeds, because the top of piston rod is thinner, can in pilot hole, slide up and down, thereby guarantee the safe handling of drift and cylinder.
Description of drawings
Fig. 1 is the cylinder of punch press of the prior art and the syndeton sketch of drift;
Fig. 2 is the cylinder of the Pneumatic press among the present invention and the syndeton sketch of drift;
Fig. 3 is the vertical view of the connecting plate among Fig. 2.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is done specific description and description.
Fig. 2 is the cylinder of the Pneumatic press among the present invention and the syndeton sketch of drift; Fig. 3 is the vertical view of the connecting plate among Fig. 2.
As shown in the figure, the cylinder of Pneumatic press of the present invention and drift syndeton are arranged to diameter less than the rear end with the diameter on the top of the piston rod 5 of cylinder, are provided with external screw thread on the top of piston rod 5.Connecting plate 6 is the flat metal derby, on connecting plate 6, be provided with two bolt mounting holes 9 and a pilot hole 8, connecting plate 6 is by two tops of passing the gripper shoe 4 that is bolted to drift 2 both sides of bolt mounting holes 9, pilot hole 8 stretches out the both sides of gripper shoe 4, pilot hole 8 is passed on the top of piston rod 5, and attaching nut 7 on the external screw thread on piston rod 5 tops.
For ease of the distortion and the installation of connecting plate 6, the side that connecting plate 6 is provided with bolt mounting holes 9 is a rectangle, and a side that is provided with pilot hole 8 is for semicircle.
The present invention forms an elongated portion with the reduced on the top of piston rod 5, cooperates with pilot hole 8, can slide up and down in pilot hole 8.When drift 2 strokes exceed downwards, because connecting plate 6 is thinner, only connecting plate 6 is deformed, cushion, can not cause the damage of drift 2 or cylinder.
When drift 2 strokes upwards exceed, because the top of piston rod 5 is thinner, can in pilot hole 8, slide up and down, thereby guarantee the safe handling of drift 2 and cylinder, reduced maintenance and cost of upkeep.
The foregoing description does not limit the present invention in any form, and all employings are equal to the technical scheme that mode obtained of replacement or equivalent transformation, all drop in protection scope of the present invention.