CN201950592U - Pin clamping mechanism - Google Patents

Abstract

The pin clamping mechanism is characterized in that an air cylinder is connected to the upper end of a cylinder base, the outer end of a piston rod matched with the air cylinder is located in an inner cavity of the cylinder base and is connected with the upper end of a claw through a hinge shaft, a pin base is arranged at the lower end of the cylinder base, a transverse positioning pin is fixed to the inner side of the pin base, an inclined guide groove is formed in the claw, the positioning pin is located in the inclined guide groove, a guide pin is arranged below the pin base, the lower portion of the claw is located in the inner cavity of the guide pin, a side opening matched with the bottom end of the claw is formed in the side face of the guide pin, and a positioning cushion. The mechanism is arranged on the actuating mechanism through the cylinder seat, the lower end of the guide pin is inserted into the positioning hole in the workpiece through the control mechanism, the bottom surface of the positioning cushion block is contacted with the workpiece, then the piston rod of the air cylinder retracts, the hook claw rotates for a certain angle under the action of the positioning pin and the inclined guide groove, the bottom end of the hook claw is exposed from the side opening, and meanwhile, the workpiece is hooked and clamped on the bottom surface of the positioning cushion block, so that the mechanism is stable and firm, does not loosen, and is good in safety, convenient to operate and flexible to act.

Description

Pin Clamping Mechanism

technical field

The utility model relates to a clamping mechanism, in particular to a pin clamping mechanism, which mainly uses a pin to penetrate into a positioning hole on a sheet-shaped workpiece to clamp it.

Background technique

Sheet-shaped workpieces need to be clamped during assembly. The existing clamping method is to process a positioning hole on the workpiece, and use the control mechanism to drive the claws into the positioning hole to control the workpiece. Poor control, unreliable, easy to fall off, unstable clamping.

Contents of the invention

The purpose of this utility model is to provide a pin clamping mechanism with stable grasping of workpieces, firm clamping and good safety, so as to overcome the deficiencies of the prior art.

The pin clamping mechanism of the utility model has a cylinder base, and a cylinder is connected to the upper end of the cylinder base. The outer end of the piston rod matched with the cylinder is located in the inner cavity of the cylinder base and connected to the upper end of the claw through a hinge shaft. There is a pin seat at the lower end of the pin seat, and a horizontal positioning pin is fixed on the inner side of the pin seat. There is an inclined guide groove on the claw, and the positioning pin is located in the inclined guide groove. There is a guide pin under the pin seat. In the inner cavity of the pin, the side of the guide pin has a side opening matched with the bottom end of the claw, and a positioning pad is set on the outer side of the top of the guide pin.

The pin clamping mechanism of the utility model installs the mechanism on the executive mechanism through the cylinder seat, the piston rod of the initial cylinder is in the extended state, the claw is located in the inner cavity of the guide pin, and the lower end of the guide pin is inserted into the workpiece on the workpiece through the control mechanism. In the positioning hole, make the bottom surface of the positioning pad contact the workpiece, and then the cylinder piston rod retracts. Due to the action of the positioning pin and the inclined guide groove, the hook claw rotates at a certain angle, and the bottom end of the hook claw is exposed from the side port, and hooks the workpiece at the same time. The workpiece is clamped on the bottom surface of the positioning pad, which is stable and firm, not loose, with good safety, convenient operation and flexible movement.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the hook in the inner cavity of the guide pin in the specific embodiment of the utility model;

Fig. 2 is a schematic structural view of the claw exposed from the side opening in the specific embodiment of the present invention.

Detailed ways

As shown in Fig. 1 cylinder base, the upper end of cylinder base 1 is fixedly connected with cylinder 2 by bolts, and the outer end of piston rod 3 matched with cylinder 2 is located in the inner chamber of cylinder base 1 and connected to the upper end of claw 8 by hinge shaft 4. The lower end of cylinder seat 1 has pin seat 6, and pin seat 6 inboard is fixed with the locating pin 5 that transversely arranges, and is fixedly connected between the two ends of locating pin 5 and pin seat 6. An oblique guide groove 7 is processed on the hook claw 8, and the oblique guide groove 7 can be an arc groove or a linear groove. The positioning pin 5 is just positioned in the oblique guide groove 7 . There is a guide pin 11 below the pin seat 6, the lower part of the hook claw 8 is located in the inner cavity of the guide pin 11, the side of the guide pin 11 has a side port 9 matching the bottom end of the hook claw 8, and a positioning pin is set on the outer side of the upper part of the guide pin 11. Spacer 10, the upper part of the positioning spacer 10 rests on the outwardly protruding edge of the guide pin 11, and the positioning spacer 10, the outwardly protruding edge of the upper part of the guide pin 11, the pin seat 6 and the cylinder seat 1 are fixed by screw rods connected as one.

During installation, the mechanism is fixed on the control actuator through the cylinder seat 1, the piston rod 3 of the initial cylinder 2 is in the extended state, the hook claw 8 is located in the inner cavity of the guide pin 11, and the lower end of the guide pin 11 is inserted into the workpiece 12 through the control mechanism In the positioning hole on the top, make the bottom surface of the positioning pad 10 contact the workpiece 2, and then the cylinder piston rod 3 retracts. Due to the action of the positioning pin 5 and the inclined guide groove 7, the hook claw 8 rotates at a certain angle, and the bottom end of the hook claw 8 automatically The side opening 9 is exposed, and at the same time hooks the workpiece 12 and clamps the workpiece 12 on the bottom surface of the positioning pad 10 .

Claims (1)

1. A pin clamping mechanism, characterized in that: there is a cylinder base (1), the upper end of the cylinder base (1) is connected with a cylinder (2), and the outer end of the piston rod (3) matched with the cylinder (2) The head is located in the inner cavity of the barrel base (1) and is connected to the upper end of the hook (8) by the hinge shaft (4). The lower end of the barrel seat (1) has a pin seat (6), and the inner side of the pin seat (6) is fixed with a transverse setting. The positioning pin (5) has an oblique guide groove (7) on the hook claw (8), the positioning pin (5) is located in the oblique guide groove (7), and there is a guide pin (11) under the pin seat (6). The lower part of the hook (8) is located in the inner cavity of the guide pin (11), and the side of the guide pin (11) has a side opening (9) matching the bottom of the hook (8). The outer side of the upper part is covered with a positioning pad (10).

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