Jaw tips and jaw tip assemblies for parts grippers

• US 6,276,733 B1
• Filed: 06/30/1999
• Issued: 08/21/2001
• Est. Priority Date: 06/30/1998
• Status: Expired due to Term

• Current Assignee: PHD Incorporated
• Original Assignee: PHD Incorporated
• Inventors: Steele, Kenneth, Moilanen, Steven M.
• Primary Examiner(s): CHERRY, JOHNNY DAN
• Application Number:
  US09/345,031
• Time in Patent Office: 783 Days
• Field of Search: 294/1.1, 294/81-- 8, 294/86.4, 294/86.41, 294/88, 294/106, 294/107, 294/115-119, 294/902, 269/258, 269/259, 269/261, 269/262, 269/265, 269/268, 269/269, 269/271, 269/279-284, 901/39
• US Class Current: 294/203
• CPC Class Codes: B25J 15/0475 Exchangeable fingers
• CPC Class Codes: Y10S 294/902 Gripping element

Abstract

Jaw tips and jaw tip assemblies for fluid pressure actuated grippers which allow for the gripping, sensing and transferring of a variety of workpieces. Mating concave and convex gripper tips are provided which eliminate or reduce the formation of particulate which flake or peel off a gripper workpiece. Gripper tips having angled workpiece gripping surfaces are provided which allow the gripping of non-flat or non-planar workpieces. Gripper tip assemblies are provided which include sensors which can be used to detect the present or absence of a workpiece. Gripper tip extender assemblies are provided which extend the forward and sideways reach of gripper jaws. Padded gripper tips are provided with gripping surfaces having surface channels formed therein which surface channels direct fluids away from the gripping surfaces.

Claims

1. A gripper tip extender for use with a parts gripper assembly having a piston rod that engages in reciprocal movement along its longitudinal axis, a pin extending through the piston rod transverse to the longitudinal axis, opposing jaw members at least one of which pivots about the pin, each of the jaw members being independently removable and replaceable by other jaw members, and each of the jaw members having a gripper jaw tip seat for receiving a jaw tip, the gripper tip extender comprising:

a base coupled to the gripper jaw tip seat of one of the opposing jaw members, the base having a first side; and

an arm member which extends outward from the first side of the base and has an orientation with respect to the parts gripper assembly that is generally parallel to the pin, the arm member including a plurality of gripper tip receiving locations, each of the locations is defined by an opening to receive the jaw tip, and each of the locations is spaced apart along the arm member a distance from the base.

2. A gripper tip extender according to claim 1, wherein the arm member comprises two arm members.

3. A gripper tip extender according to claim 2, wherein the two arm members are linearly aligned with each other.

4. A gripper tip extender according to claim 1, wherein the base includes a recessed portion for engaging the gripper jaw tip seat on one of the gripper jaw members.

5. A gripper tip extender for use with a parts gripper assembly having a piston rod that engages in reciprocal movement along its longitudinal axis, a pin coupled to the piston rod and extending transverse to its longitudinal axis, opposing jaw members at least one of which pivots about the pin, each of the jaw members being independently removable and replaceable by other jaw members, and each of the jaw members having a gripper jaw tip seat for receiving ajar tip, the gripper tip extender comprising:

a base coupled to the jaw tip seat of at least one of the jaw members; and

an arm member which extends outward from each side of the base, the arm member including a plurality of gripper tip receiving stations on each side of the base spaced apart along the arm member a distance from the base.

6. The gripper tip extender of claim 5, wherein each of the jaw members includes a gripper tip extender coupled thereto.

7. The gripper tip extender of claim 5, wherein each gripper tip extender is in parallel alignment with one another when the jaw members are closed.