IP Library › Granted Patent US 12,246,438
Granted Patent B2
US 12,246,438 · App. 17/955,220 · Granted Mar 11, 2025

Systems for changing tools on a gripper apparatus

Inventors: Lei Lei (Tokyo, JP); Yixuan Zhang (Tokyo, JP)
Assignee: Mujin, Inc.
B25J15/0616
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,246,438
App. No.
17/955,220
Granted
Mar 11, 2025
Kind
B2
Abstract

A tool system for a robotic arm is provided. The tool system includes a tool support structure; a tool structure, coupled to the tool support structure, having at least one structural member; a connector mechanically coupled to the structural member and shaped for engaging the tool support structure; and a control unit mechanically coupled to the at least one structural member and configured to sense and adjust performance of the tool structure based on determining a connection to the tool support structure.

Claims (49)

1. A tool structure for a robotic arm, the tool structure comprising:

at least one structural member;

a connector mechanically coupled to the structural member and shaped for engaging a tool support structure located on the robotic arm, the connector including:

at least one signal line disposed within the connector and positioned for receiving one or more electrical signals from the tool support structure; and

at least one electronic component attached to the structural member,

wherein the signal line is configured to electrically transfer a signal to and/or from a control unit from and/or to the electronic component.

2. The structure of claim 1 , wherein the electronic component is a tool head mechanically coupled to the at least one structural member, the tool head being controlled by the control unit through the connector;

wherein the tool structure includes at least one current analog drive sensor communicatively coupled to the control unit, the at least one current analog sensor being positioned and configured to measure performance of the tool head.

3. The structure of claim 2 , wherein the tool structure further comprises a vacuum generator disposed on the at least one structural member, the vacuum generator configured to receive compressed air and generate vacuum pressure in response to compressed air received from the tool support structure.

4. The structure of claim 1 , wherein the tool support structure comprises at least one signal pin configured to receive a feedback signal from the tool support structure; and

wherein the control unit is configured to dynamically adjust the electrical signal to the signal pin based on the received feedback signal.

5. The structure of claim 4 , wherein the control unit is configured to dynamically terminate transmission of an electrical signal based on the received feedback signal indicating that the connector has become disconnected from the tool support structure.

6. The structure of claim 1 , wherein the connector comprises a computer readable image code; and

wherein the control unit dynamically adjusts transmission of electrical signals provided by the tool support structure based on detection of the computer readable image code.

7. The structure of claim 1 , wherein the connector broadcasts a short range wireless signal; and

wherein the control unit dynamically adjusts electrical signals provided by the tool support structure based on detection of broadcast short range wireless signal.

8. A tool system for a robotic arm, the tool system comprising:

a tool support structure located on the robotic arm;

a tool structure selectively coupled to the tool support structure, including:

at least one structural member;

a connector mechanically coupled to the structural member and shaped for removably engaging the tool support structure; and

at least one electronic component attached to the structural member; and

a control unit electrically coupled to the electronic component attached to the at least one structural member via the connector.

9. The tool system of claim 8 , wherein the electronic component is a tool head mechanically coupled to the structural member, the tool head being controlled by the control unit through the connector;

wherein the tool structure includes at least one current analog drive sensor communicatively coupled to the control unit, the at least one current analog sensor being positioned and configured to measure performance of the tool head.

10. The tool system of claim 9 , the tool structure further comprises a vacuum generator disposed on the at least one structural member, the vacuum generator configured to receive compressed air and generate vacuum pressure in response to compressed air received from the tool support structure.

11. The tool system of claim 8 , wherein the tool support structure comprises at least one signal pin configured to receive a feedback signal from the tool support structure; and

wherein the control unit is configured to dynamically adjust transmission of an electrical signal based on the received feedback signal.

12. The tool system of claim 11 , wherein the control unit is configured to dynamically terminate transmission of an electrical signal based on the received feedback signal indicating that the connector has become disconnected from the tool support structure.

13. The tool system of claim 8 , wherein the connector comprises a computer readable image code; and

wherein the control unit dynamically adjusts transmission of electrical signals provided by the tool support structure based on detection of the computer readable image code.

14. The tool system of claim 8 , wherein the connector broadcasts a short range wireless signal; and

the control unit dynamically adjusts electrical control signals configured to drive a tool head provided by the tool support structure upon detection of broadcast short range wireless signal.

15. A tool structure for a robotic arm, the tool structure comprising:

at least one structural member;

a connector mechanically coupled to the structural member and shaped for engaging a tool support structure located on the robotic arm;

at least one signal line disposed within the connector and positioned for receiving one or more electric signal from the tool support structure;

at least one electronic component attached to the structural member; and

a vacuum generator disposed on the at least one structural member, the vacuum generator configured to receive compressed air and generate vacuum pressure,

wherein the signal line is configured to electrically transfer a signal to and/or from a control unit from and/or to the electronic component.

16. The structure of claim 15 , wherein the tool structure includes at least one current analog drive sensor configured to transmit a signal to the control unit, the at least one current analog sensor being positioned and configured to measure performance of a tool head.

17. The structure of claim 15 , wherein the tool support structure comprises at least one signal pin configured to communicatively couple to at least one signal line;

wherein the at least one signal line is disposed within the connector and positioned for receiving one or more electrical signals from the tool support structure;

wherein the at least one signal pin is configured to receive a feedback signal from the tool support structure; and

wherein the control unit is configured to dynamically adjust the electrical signal to the signal pin based on the received feedback signal.

18. The structure of claim 17 , wherein the control unit is configured to dynamically terminate transmission of the electrical signal to the signal pin based on the received feedback signal indicating that the connector has become disconnected from the tool support structure.

19. The structure of claim 15 , wherein the compressed air for generating the vacuum pressure for the vacuum generator is received from the tool support structure via the connector.

20. The structure of claim 19 ,

wherein the control unit is configured to control a tool head that is mechanically coupled to the at least one structural member.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 28, 2022
From: LEI, LEI; ZHANG, YIXUAN
To: MUJIN, INC.
Reel/Frame 061248/0360 →
Continuity (3)
Continuation 16748539 · Jan 21, 2020
Provisional Application 62875880 · Jul 18, 2019
Related Publication 20230020813A1 · Jan 19, 2023
References Cited (19)
US 9623569B2 · McCollum et al. · 2017 [cited by applicant]
US 9630315B2 · Cookson et al. · 2017 [cited by applicant]
US 10011022B1 · Lin et al. · 2018 [cited by applicant]
US 10350755B2 · Wagner et al. · 2019 [cited by applicant]
US 11458639B2 · Lei · 2022 [cited by examiner]
US 20090193642A1 · Lin et al. · 2009 [cited by applicant]
US 20090288458A1 · Lin et al. · 2009 [cited by applicant]
US 20150086316A1 · Greenberg et al. · 2015 [cited by applicant]
US 20170062263A1 · Kesil et al. · 2017 [cited by applicant]
US 20190329403A1 · Ueda · 2019 [cited by examiner]
CN 106476024A · 2017 [cited by applicant]
JP H05069362A · 1993 [cited by applicant]
JP 2017042909A · 2017 [cited by applicant]
JP 2018038879A · 2018 [cited by applicant]
Notice of Reasons for Rejection for related Japanese Patent Application No. 2020-011318 mailed on May 14, 2020; English translation provided (6 pages). [cited by applicant]
Decision to Grant for related Japanese Patent Application No. 2020-011318 mailed on Jun. 25, 2020 (3 pages). [cited by applicant]
Office Action in related Japanese Application 2020-123417, dated Aug. 27, 2024, in 12 pages. [cited by applicant]
Office Action in related Chinese Application 202210552204, dated Dec. 13, 2022, in 20 pages. [cited by applicant]
Notice of Reasons for Rejection received in corresponding JP Application No. 2020-123417, mailed Jan. 5, 2024, in 12 pages, with English translation. [cited by applicant]