ANSI B151.1-2017 pdf free download – Safety Requirements for Injection Molding Machines.
3Definitions
For the purposes of this standard,the followingdefinitions apply:
3.1alarm:An indication that a failure or mis-adjustment of a device has occurred.
3.2anti-repeat: The part of the control system that isdesigned to limit the lMM to one cycle even though theactuating mechanism is held in the “operate” position.Anti-repeat requires release of actuating controls beforeanother cycle can be initiated.
3.3automatic cycle (continuous):A selectablemode of operation of the IMM which allows it to performmore than one cycle.
3.4barrel:Thecylinderportionoftheplasticizing/injection unit within which the material isprocessed.
3.5clamp: That portion of the IMM that holds twohalves of a mold and opens and closes the mold.
3.6coasting:Power-free deceleration to stopmotion,including unintentional gravity descent.
3.7concurrent:Acting in conjunction; used todescribe a situation wherein two or more control devicesexist in an actuated condition at the same time (but notnecessarily simultaneously).
3.8control circuit: The circuit of a control apparatusor system that carries the control signals directing thesequential motion/cycling of the lMM by signaling thedevices to affect lMM motion.
3.9control system:Sensors,manual input,andmode selection elements，interlocking and decisionmaking circuitry，and output elements provided to theIMM actuators, operating devices or mechanisms.
3.10core: Stationary or movable mold part thatshapes a portion of a molded part.
3.11 cycle: A complete movement from the initial startposition back to that same start position.
3.12 ejector: Any and all provisions built into the IMMor mold for the release of the finished product from themold.
3.13electrically driven axis: System consisting of anelectric motor, a motor control unit and any additionalcontactors.
3.14 emergency stop device: Manually actuatedcontrol device used to initiate an emergency stopfunction.
3.15 employer: See user.
3.16 guard: A barrier that provides protection from ahazard.
3.16.1fixed guard: A guard affixed in such amanner (for example, by screws, nuts, welding) thatit can only be opened or removed by the use of toolsor by destruction of the affixing means.
3.16.2 movable guard: A guard which may bemoved or removed without the use of tools.
3.16.3gate: safeguarding device arranged toenclose the hazard zone before machine motion canbe initiated.
3.17 hazard: A potential source of harm.
3.18injection unit(s): The portion of the IMM thatprocesses or delivers material into a mold.
3.19 instructions: Documentation for the installation,operation, maintenance, and safe use of the lMM.
3.20installer:An individual,partnershiporcorporation responsible for placement and preparationfor use of a machine.
3.21integrator: An entity that designs,provides,manufactures or assembles a machine, its associatedmachines or equipment,the safeguarding,controlinterfaces, interconnections or the control system into amachinery system. See also,supplier; user.
3.22interlock: A design in which the state of controlsor devices or signals either permits or restricts theoperation of another.
3.23 large IMM:
a) machines with a clamping unit and tie-bars where:
e1 or e2 > 1200 mm (47 in) (see Figure 1a), and e3 maximum opening between the platens is greater than 1200 mm (47 in) (see Figure 1 e).
b) Machines with horizontal clamping unit and tie-bars (see Figure 1(b)) where:
e1 or e2 > 1200 mm (47 inches)
c) machines with vertical clamping unit without tie-bars where:
e1 > 1200 mm (47 in) (see Figure 1b); or
e2 > 1200 mm (47 in) and
e3 maximum opening between the platens is greater than 1200 mm (47 in) (see Figure 1c and 1e).ANSI B151.1 pdf download.