CN-224214472-U - Zero-degree rotary cylinder

CN224214472UCN 224214472 UCN224214472 UCN 224214472UCN-224214472-U

Abstract

The utility model provides a zero-degree rotary cylinder which comprises a cylinder body, wherein a piston is arranged in the inner cavity of the cylinder body, a control rod is arranged on the piston, the control rod moves axially along the piston and is restrained and fixed in circumferential freedom, the zero-degree rotary cylinder further comprises a cylinder cover and an execution rod penetrating out of the front end of the cylinder cover, the execution rod is pushed by an elastic piece to keep an overhanging state, the execution rod is matched with the control rod through a spiral groove and a pin, the control rod is driven to rotate through the spiral groove in the early stage of axial movement, and the control rod stops rotating and is converted into axial displacement after reaching the limit position of the spiral groove, and meanwhile, the elastic piece is compressed to store force. The utility model has the advantages that the utility model can not generate the pressing action during rotation, and the pressing action is formed after the rotation is completed so as to reduce the axial size of the cylinder.

Inventors

LI XISHENG
CHEN XI
ZHANG PEIWU
LI CHUNFENG
CHEN BINYU

Assignees

浙江埃迈控股有限公司

Dates

Publication Date: 20260508
Application Date: 20250627

Claims (10)

1. The zero-degree rotary cylinder comprises a cylinder body, wherein a piston is arranged in the inner cavity of the cylinder body, and a control rod is arranged on the piston; the device comprises a cylinder cover, a control rod, a spring, a control rod, a cylinder cover and an actuating rod penetrating out of the front end of the cylinder cover, wherein the actuating rod is pushed by the spring to enable the actuating rod to be in an overhanging state, the actuating rod is matched with the control rod through a spiral groove and a pin, the actuating rod is driven to rotate through the spiral groove in the earlier stage of axial movement of the control rod, and the actuating rod stops rotating and is converted into axial displacement after reaching the limit position of the spiral groove, and meanwhile the spring is compressed to store force.
2. The zero-degree rotary cylinder of claim 1, wherein the rear end of the cylinder cover is further provided with a rotation stopping support, the rotation stopping support is provided with a guide hole for a control rod to pass through, and the control rod axially slides along the guide hole while the circumferential freedom degree of the control rod is restrained by the guide hole.
3. The zero-degree rotary cylinder according to claim 2, wherein the outer wall of the control rod is provided with a rotation stopping surface, and the hole wall of the guide hole is provided with a guide surface matched with the rotation stopping surface.
4. A zero-degree rotary cylinder according to claim 2 or 3 is characterized in that a supporting cavity is formed in the rear end of the cylinder cover, the rear section of the actuating rod is located in the supporting cavity, a sliding hole is formed in the end portion of the actuating rod, the front end of the actuating rod is inserted into the sliding hole and is in sliding fit with the sliding hole, the spiral groove is formed in the outer wall of the actuating rod and penetrates through the sliding hole, the pin is fixed to the front end of the actuating rod and is matched with the spiral groove, and the movement stroke of the piston and the actuating rod is larger than the length of the spiral groove in the axial direction of the actuating rod, the actuating rod is pulled to axially retract through the pin after the actuating rod reaches the tail end of the spiral groove.
5. The cylinder of claim 4, wherein the number of the spiral grooves is two, the spiral grooves are arranged at 180-degree intervals in the circumferential direction of the actuating rod, and the pin penetrates the control rod and enables two ends of the pin to be respectively matched with the spiral grooves.
6. The zero-degree rotary cylinder of claim 4, wherein the elastic member is a spring and is positioned in the supporting cavity and is concentric with the actuating rod or/and the control rod, one end of the elastic member abuts against the rotation-stopping supporting member, and the other end of the elastic member abuts against the reset member on the outer wall of the actuating rod, so that the actuating rod is in an overhanging state.
7. The zero-degree rotary cylinder of claim 6, wherein the outer wall of the actuating rod is provided with an outer groove, the reset piece is a third clamp spring clamped on the outer groove, and the elastic piece abuts against the reset piece to enable the reset piece to abut against the end face of the bottom of the supporting cavity when the actuating rod is kept in an overhanging state.
8. The zero-degree rotary cylinder of claim 4, wherein the rotation stopping support piece is fixed at the rear end of the support cavity or directly fixedly connected with or integrally connected with the cylinder body, and the cylinder cover is fixedly connected with the cylinder body.
9. The zero-degree rotary cylinder of claim 8, wherein the front end of the cylinder body is provided with a first clamp spring for preventing the cylinder cover from falling out, the cylinder body is further provided with a rotation stopping pin for limiting the rotation of the cylinder cover, and the rear end of the cylinder body is provided with a rear cover which is integrally connected with the cylinder body or is fixed through a second clamp spring for preventing the cylinder cover from falling out.
10. The zero-degree rotary cylinder of claim 1, wherein the cylinder inner cavity is provided with an inlet and an outlet at two extreme positions corresponding to the stroke of the piston.

Description

Zero-degree rotary cylinder Technical Field The utility model relates to the field of cylinders, in particular to a zero-degree rotary cylinder. Background The rotary clamping cylinder (rotary cylinder) is also called a corner cylinder, namely the piston rod can rotate to the left (or right) by a certain angle (generally 90 degrees) while stretching, and simultaneously the workpiece is clamped by the clamping wall by utilizing the clamping stroke, so that the rotary clamping cylinder has the greatest advantage of rotating and pressing action, effectively avoids the shielding problem of the traditional cylinder, and is very suitable for narrow positions with limited space; The rotation is realized by adopting a mode of adding pins into the threaded grooves, so that the power direction is derived from the pressing action, namely the pressing action is started when the rotation is started, but the actual pressing is realized after the rotation is completely finished; Therefore, when the rotation is satisfied, the axial stroke required in the rotation process of the cylinder needs to be reserved for the cylinder, and then the pressing stroke is reserved, so that the stroke required in the rotation process also occupies the installation space, and the installation can still be influenced in some special occasions. Disclosure of utility model In view of the above, an object of the present utility model is to provide a zero degree rotary cylinder in which a pressing action is not generated during rotation, and the pressing action is generated after the rotation is completed to reduce the axial dimension of the cylinder. The zero-degree rotary cylinder comprises a cylinder body, wherein a piston is arranged in an inner cavity of the cylinder body, a control rod is arranged on the piston, the control rod moves axially along the piston and is restrained and fixed in circumferential freedom, the zero-degree rotary cylinder further comprises a cylinder cover and an execution rod penetrating out of the front end of the cylinder cover, the execution rod is pushed by an elastic piece to enable the execution rod to keep an overhanging state, the execution rod is matched with the control rod through a spiral groove and a pin, the execution rod is driven to rotate through the spiral groove in the early stage of the axial movement of the control rod, and the control rod stops rotating and is converted into axial displacement after reaching the limit position of the spiral groove, and meanwhile, the elastic piece is compressed for storing force. The utility model further provides that the rear end of the cylinder cover is also provided with a rotation stopping support piece, the rotation stopping support piece is provided with a guide hole for a control rod to pass through, and the control rod axially slides along the guide hole while the circumferential freedom degree of the control rod is restrained by the guide hole. The utility model is further arranged that the outer wall of the control rod is provided with a rotation stopping surface, and the hole wall of the guide hole is provided with a guide surface matched with the rotation stopping surface. The utility model further provides that the rear end of the cylinder cover is provided with a supporting cavity, the rear section of the actuating rod is positioned in the supporting cavity, the end part of the actuating rod is provided with a sliding hole, the front end of the control rod is inserted into the sliding hole and is in sliding fit with the sliding hole, the spiral groove is arranged on the outer wall of the actuating rod and is communicated with the sliding hole, the pin is fixed at the front end of the control rod and is matched with the spiral groove, and the movement stroke of the piston and the control rod is larger than the length of the spiral groove in the axial direction of the actuating rod, so that the actuating rod is pulled to axially retract through the pin after the actuating rod reaches the tail end of the spiral groove. The utility model is further characterized in that the number of the spiral grooves is two, the spiral grooves are arranged at 180-degree intervals in the circumferential direction of the actuating rod, and the pins penetrate through the control rod and enable the two ends of the control rod to be respectively matched with the spiral grooves. The utility model is further arranged that the elastic piece is a spring and is positioned in the supporting cavity and is concentric with the actuating rod or/and the control rod, one end of the elastic piece is propped against the rotation-stopping supporting piece, and the other end of the elastic piece is propped against the reset piece on the outer wall of the actuating rod, so that the actuating rod is kept in an overhanging state. The utility model further provides that the outer wall of the actuating rod is provided with an outer groove, the reset piece is a third clamping spring clamped