Omnidirectional multi-finger asynchronous gripper for casting robot

Patent metadata

Field	Value
Publication number	US-10668628-B2
Application number	US-201715774274-A
Country	US
Kind code	B2
Filing date	Oct 31, 2017
Priority date	Sep 29, 2017
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

An omnidirectional multi-finger asynchronous gripper for a casting robot, includes a connecting seat, an arc-shaped support, a mounting seat, longitudinal clamping devices, transverse adjusting devices and transverse clamping devices. The omnidirectional multi-finger asynchronous gripper is mounted to a tail end of the casting robot through the connecting seat; each longitudinal clamping device can independently and longitudinally clamp a casting or a mold core, is adjustable in spacing through the transverse adjusting devices, can automatically adapt to castings or mold cores with different outlines and can realize effective fitting-type adaptive clamping of specially-shaped castings and mold cores; and the transverse clamping devices are used for transversely and independently clamping the casting or mold core and a clamping position or angle can be adjusted through a swinging angle adjuster.

First claim

What is claimed is:

1. An omnidirectional multi-finger asynchronous gripper for a casting robot, comprising:
a connecting seat, an arc-shaped support, a mounting seat, longitudinal clamping devices, transverse adjusting devices and transverse clamping devices;
wherein connecting lugs are symmetrically provided at upper and lower ends of the connecting seat, connecting pins or pin holes are coaxially and symmetrically disposed on left and right sides of the connecting seat and a circular process hole is provided in a middle position of the connecting seat;
an upper end of the arc-shaped support is fixedly connected with the connecting seat and a lower end of the arc-shaped support is fixedly connected with the mounting seat;
guide rails are provided on front and rear sides of the mounting seat, a slotted process hole is provided between the two guide rails and herringbone sliding grooves are provided in left and right ends of the mounting seat;
the longitudinal clamping devices are mounted on the mounting seat and are connected with the mounting seat through the transverse adjusting devices, and the transverse adjusting devices are mounted at two ends of the longitudinal clamping devices;
the transverse clamping devices are symmetrically mounted at the left and right ends of the mounting seat;
each longitudinal clamping device comprises a longitudinal clamping cylinder, a longitudinal clamping sleeve, a sliding block, a longitudinal chuck and a longitudinal chuck telescopic cylinder;
two ends of the longitudinal clamping cylinder are mounted on the mounting seat through the transverse adjusting devices and are connected with a top of the longitudinal clamping sleeve through hinges;
a mounting hole is provided in a top of the sliding block, a vertical guide hole is provided in an upper end of the sliding block, a longitudinal guide hole is provided in a lower end of the sliding block, a guide rail sliding groove is provided in an inner side of the sliding block, the sliding block is sleeve-mounted on a piston rod of the longitudinal clamping cylinder through the mounting hole, and the sliding block is sleeve-mounted on the guide rails of the mounting seat through the guide rail sliding groove and is connected with the mounting seat through the transverse adjusting devices;
a section of the longitudinal clamping sleeve is homocentric-square-shaped, a longitudinal guide shaft is provided on an inner side of an upper end of the longitudinal clamping sleeve, and the longitudinal guide shaft is mounted in the longitudinal guide hole of the sliding block and is connected with the sliding block through a linear bearing or a sliding bearing;
a section of a middle-upper portion of the longitudinal chuck is rectangular, the longitudinal chuck is sleeve-mounted in the longitudinal clamping sleeve, a first anti-slipping rubber layer is provided at a lower end of the longitudinal chuck and a first anti-falling hook is provided at the lowermost end of the longitudinal chuck;
an upper end of the longitudinal chuck telescopic cylinder is connected with the longitudinal clamping sleeve through a first hinge and a lower end of the longitudinal chuck telescopic cylinder is connected with the longitudinal chuck through a second hinge;
each transverse adjusting device comprises two gear racks, an anti-slipping stop plate, a hand ring and extension springs, the two gear racks are disposed in parallel at tops of front and rear ends of the mounting seat;
stop teeth are provided below one end of the anti-slipping stop plate, a circular hook hole and a vertical guide pillar are provided at an other end of the anti-slipping stop plate, the vertical guide pillar is disposed in the vertical guide hole of the sliding block, the anti-slipping stop plate and the sliding block of the longitudinal clamping device are connected through two extension springs, and the anti-slipping stop plate is engaged with the two gear racks;
the hand ring is located on one side of the anti-slipping stop plate and is fixedly connected with the anti-slipping stop plate; and
the two extension springs are symmetrically disposed on an outer side surface of the sliding block, upper ends of the extension springs are connected with the anti-slipping stop plate and lower ends of the extension springs are connected with the sliding block.

2. The omnidirectional multi-finger asynchronous gripper according to claim 1 , wherein each transverse clamping device comprises a transverse clamping cylinder, a swinging angle adjuster, a transverse clamping sleeve, a transverse chuck and a transverse chuck telescopic cylinder, the transverse clamping cylinder is mounted below the mounting seat, a middle portion of the transverse clamping cylinder is connected with the mounting seat through a third hinge, an inner side end of the transverse clamping cylinder is connected with the swinging angle adjuster through a fourth hinge, a guide sliding pin is provided at a top of the inner side end of the transverse clamping cylinder, and the guide sliding pin is disposed in the herringbone sliding groove of the mounting seat and is slidable along the herringbone sliding groove; an outer side end of the transverse clamping cylinder is fixedly connected with a top of the transverse clamping sleeve; the swinging angle adjuster is fixedly mounted at a bottom of the mounting seat and is connected with the mounting seat through a fifth hinge; the transverse chuck is sleeve-mounted in the transverse clamping sleeve and is upwards and downwards slidable along the transverse chuck sleeve, a second anti-slipping rubber layer is provided at a lower end of the transverse chuck and a second anti-falling hook is provided at the lowermost end of the transverse chuck; an upper end of the transverse chuck telescopic cylinder is connected with the transverse clamping sleeve through a sixth hinge and a lower end of the transverse chuck telescopic cylinder is connected with the transverse chuck through a seventh hinge; and the guide sliding pin is connected with the transverse clamping cylinder through a thread and a pin cap is provided at a top of the guide sliding pin.

3. The omnidirectional multi-finger asynchronous gripper according to claim 2 , wherein the swinging angle adjuster comprises a swinging angle adjusting cylinder, a left connecting rod and a right connecting rod, the swinging angle adjusting cylinder is mounted at the bottom of the mounting seat, a middle portion of the swinging angle adjusting cylinder is connected with the mounting seat through a eighth hinge, an outer side end of the swinging angle adjusting cylinder is connected with the left connecting rod and the right connecting rod through coaxial hinges; the left connecting rod is located on a left side of the swinging angle adjusting cylinder and a left end of the left connecting rod is connected with the transverse clamping cylinder on a left side through a ninth hinge; and a right end of the right connecting rod is connected with the transverse clamping cylinder on a right side through a tenth hinge.

4. The omnidirectional multi-finger asynchronous gripper according to claim 1 , wherein an electromagnetic reversing valve and a safety valve are provided at the top of the mounting seat.

5. The omnidirectional multi-finger asynchronous gripper according to claim 1 , wherein the longitudinal clamping cylinder, the longitudinal chuck telescopic cylinder, the transverse clamping cylinder, the transverse chuck telescopic cylinder and the swinging angle adjusting cylinder are double-acting cylinders, double-acting hydraulic cylinders or linear actuators.

6. The omnidirectional multi-finger asynchronous gripper according to claim 1 , wherein the number of the longitudinal clamping devices is 4 or 5 or 6 or 7 or 8 or 9 or 10, and eac

Assignees

• Univ Anhui Sci & Technology

Inventors

• Guo Yongcun
• Wang Chengjun
• Ren Runrun
• Zhu Zhiwei
• Shen Yuzhe
• Wang Peng
• Xu Chengke

Classifications

• B25J15/10

  with three or more finger members {(B25J15/0009 takes precedence)} · CPC title

• B25J15/0293

  having fingers directly connected to actuator · CPC title

• B25J19/023

  including video camera means · CPC title

• B22D31/002

  Cleaning, working on castings · CPC title

• B25J15/0273

  comprising linear guide means · CPC title