THERMAL TECH EQUIPMENTCo. Inc. 
   "SOLUTIONS FOR THE PLASTICS INDUSTRY"		  
   
 

SPI Machinery Division
The Society of the Plastics Industry, Inc.
1275 K Street, NW, Suite 400 Washington, DC 20005
Reception 202-371-5200
Direct 202-371-5231
Fax 202-371-1022

SPI MACHINERY DIVISION
ROBOTICS COMMITTEE
RECOMMENDED GUIDELINE FOR  
ROBOT/INJECTION MOLDING MACHINE  
ELECTRICAL INTERFACE
 Version 2.0
June 1992

1.0 PURPOSE

  • The purpose of this work is to provide electrical interface guidelines for the installation of robots with injection molding machines.

2.0 OBJECTIVE
  • The objective of the committee was to standardize the electrical interface between the injection molding machine and the robot as well as to specify the electrical connection for this standard interface.

3.0 SCOPE
  • The guideline applies to the electrical interface between robots and injection molding machines. It does not include any interface for the transfer of data since solutions to this problem will be covered by the SPI communications protocol.

4.0 ELECTRICAL INTERFACE
  • A 32 pin interface connection (DIN #40050) 10A 600V double lever base and hood plug connection will act as the physical link between the robot and the injection molding machine.
  • Two sets of two inserts are requires for the interface. There are 16 male and 16 female pins in each connector. It is intended that the "HOT" pins are to be enclosed within the female insert of each connector. There are unassigned pins to meet special requirements or to accommodate further developments. The connector pin assignments and the contact functions are described under Electrical Signals, 4.1, 4.2, & 4.3.
  • The current of the signals must not exceed 200 mA unless otherwise noted.
  • The voltage of the signals must not exceed 250 Vac.
  • For pulses, the pulse width must not be less than 0.5 seconds.
  • All signals are maintained signals unless otherwise noted.

Version 2.0
June 1992

4.1 ELECTRICAL SIGNALS (INJECTION MOLDING MACHINE TO ROBOT)
  • All functions with be Dry Contacts.
PINS  FUNCTIONS
1/9 -  EMERGENCY STOP (I.M.M.)

While the injection molding machine emergency stop is activated, the circuit will open and will activate the emergency stop circuit of the robot. The injection molding machine emergency stop circuit will be hard wired in series with the robot emergency stop circuit. The current of this signal must not exceed 6A.

2/16 -  MOLD FULLY OPEN (I.M.M.)

 

 

This signal is present when the contact s are closed and indicates that the mold is in a predetermined fully open position. The signal is maintained whenever the mold is in the predetermined fully open position.

3/11 -  MOVABLE GATES & GUARDS CLOSED (I.M.M.)

 

 

This signal is present when the contacts are closed and indicates that the movable gates and guards that prevent access to robot motions are closed. The signal is maintained as long as the movable gates and guards are closed. The current of this signal must not exceed 6A.

4/16 -  EJECTOR FULLY RETRACTED (I.M.M.)

 

 

This signal is present when the contacts are closed and indicates that the ejectors are fully retracted. The signal is maintained while the ejectors are fully retracted.

5/16 -  EJECTOR FULLY FORWARD (I.M.M.)

 

 

This signal is present when the contacts are closed and indicates that the ejectors are fully forward. The signal is maintained while the ejectors are fully forward.

6/16  - CORE FULLY SET (I.M.M.)

 

This signal is present when the contacts are closed and indicates that the cores are fully set. The signal is maintained while the cores are fully set.

7/16 -  CORE FULLY PULLED (I.M.M.)

 

 This signal is present when the contacts are closed and indicates the cores are fully pulled. The signal is maintained while the cores are fully pulled.
8/16  - REJECT PART (I.M.M.)

 

 

 This signal is present when the contacts are closed and indicates that the molded part is not acceptable. The signal must be given on/or before the mold fully open signal and removed with the start of mold closing.
10/16  - FULLY AUTOMATIC (I.M.M.)

 

 

 This signal is present when the contacts are closed and indicates that the mode of operation of the injection molding machine is fully automatic. This signal is maintained as long as the injection molding machine is in fully automatic cycle.
12/16 -  MOLD FULLY CLOSED (I.M.M.)

 

 This signal is present when the contacts are closed and indicates that the injection molding machine has reached tonnage set point. The signal is maintained as long as the mold is fully closed.
15/16  - NO PART AVAILABLE (I.M.M.)

 

 This signal is present when the contacts are closed and indicates that no molded part is available. The signal must be given before the start of mold opening and removed with the start of mold closing.
17/32 -  PERMIT CLAMP CLOSE – (ROBOT)

 

 

 The closing of this contact indicates that the robot is in a predetermined safe position and allows the IMM clamp to close. Clamp closing motion must be interrupted whenever this signal is not present. This signal is no longer required once the mold is fully closed.
18/26 -  PERMIT CLAMP MOTION – (ROBOT)

 

 

 The closing of this contact indicated that the robot is in a predetermined safe position and allows IMM clamp motion. Both clamp closing and clamp opening motion must be interrupted whever this signal is not present. The current of this signal must not exceed 6A.
19/27 -  EMERGENCY STOP – (ROBOT

 

 

 While the robot emergency stop is activated, the circuit will open and activate the emergency stop circuit of the injection molding machine. The robot emergency stop circuit will be hardwired in series with the injection molding machine emergency stop circuit. The current of this signal must not exceed 6A.
20/32  - ROBOT NON-OPERATIONAL (ROBOT)

 

 

 

 The switch contact is open when the I.M.M. is operated with the robot. The switch is closed when the machine is operated without the robot. When the switch is closed, the signals Permit Clamp Close (17, 32) Permit Clamp Motion (18, 26) and Emergency Stop (ROBOT) (19, 27) are still monitored. All other signals can be in an undetermined state.
21/32 -  PERMIT EJECTOR RETRACT (ROBOT)

 

 The closing of this contact permits the ejectors to retract. This signal is maintained until the ejectors are fully retracted.
22/32 -  PERMIT EJECTOR FORWARD (ROBOT)

 

 The closing of this contact permits the ejectors to go forward. The signal is maintained until the ejectors are fully forward.
23/32  - PERMIT CORE PULL (ROBOT)

 

 The closing of this contact permits the cores to be pulled. The signal is maintained until the cores are fully pulled.
24/32 -  PERMIT CORE SET (ROBOT)

 

 The closing of this contact permits the cores to be set. The signal is maintained until the cores are fully set.

4.3 UNUSED PINS

PINS  FUNCTIONS
13, 25, 29, 30 & 31 - SPARE These pins are designated for optional use.
14, 28 - RESERVED FOR FUTURE USE

 

 These pins are reserved for future additions to the Electrical Interface Guideline as determined by the SPI Robotics Committee.


5.0 REFERENCED DOCUMENTS

  • Din 40050 - German Standard

6.0 RELATED DOCUMENTS

  • NFPA 79 – Electrical Standard for Industrial Machinery

  • ANSI/RIA 15.06 - Safety Requirements for Industrial Robots

  • ANSI/SPI B151.1 - Safety Requirements for Horizontal Injection Molding Machines

  • ANSI/NMTBA B11 - Machine Tool Standards

  • JIRA 1006-1986 - Japanese Standard

  • JIRA 1009-1986 - Japanese Standard

  • JIRA 1010-1986 - Japanese Standard

  • EUROMAP 12  Jan 1989 -  Injection Molding Machines, Handling, Equipment, Electrical Interface

7.0 DEFINITIONS

  • Robot - A multi-functional manipulator designed to move material, parts, tools or specialized devices through variable programmed motions for the performance of a variety of tasks. The term "Robot" is meant to include reprogrammable manipulators and non-reprogrammable manipulators such as "pickers". This term does not include automatic mold changers or conveyors.
  • Injection Molding Machine – For purposes of this guideline, injection molding machine shall mean all injection molding machines that melt plastic materials, either thermoplastic or thermoset, and rubber, and inject said material into a mold held closed by a clamp.
  • Dry contacts – The signals in both the injection molding machine and the robot are given by mechanical contacts, e.g. contacts of relays or switches. The contact making is either potential-free or related to a reference potential supplied to a contact of the connector between the injection molding machine and the robot. All contacts should have a minimum rating of 250 Vac and 6A.

Interface Connector

Pin Assignments

           Robot                                                    Injection Molding Machine

Female Insert Pins 1-16
Male Insert Pins 17-32		 DIN 40050
10 AMP		 Female Insert Pins 17-32
Male Insert Pins 1-16
 
         
             
             
             
             
             
             
             
             
             
             
             
             
 
             
             
             
             
             
   

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