摘要:
A hot melt adhesive applicator operable at a number of selected temperatures having a portion of the circuitry for control of the applicator temperature at a point remote from the applicator body. The remotely located circuitry employs a differential amplifier and a zero crossing detector for controlling the operation of a triac which, when turned on, increases the temperature at the applicator. The operational amplifier is protected by a clamping circuit from receiving a signal, when a temperature setting is changed from a high to a low setting, that would otherwise cause the differential amplifier to provide an output required for turning on the triac which would cause a run away condition to exist.
摘要:
An article finishing line and coating system including a spray washing station for washing the articles with heated liquid and a coating station, between a drying oven for drying the washed articles and a curing oven for curing the coating which is applied to the articles at the coating station. The washing liquid is heated in tanks having immersion conduits therein heated by infrared burners and the exhaust gases from the immersion heaters are conducted to the curing oven, both directly and by way of the drying oven, to supplement the heat requirements of these two ovens.
摘要:
A semipermeable gas separation membrane is plasma deposited from liquid organosiloxane monomer having at least three silicon atoms and an alpha hydrogen atom. The semipermeable membrane may be employed as a gas-selective membrane in combination with a porous substrate.
摘要:
The invention relates to a plant for the treatment, in particular the cataphoretic dip coating of objects, in particular of vehicle chassis, comprising at least one transport car (5) which runs the objects (4) through the plant and introduces and retrieves the above to and from several treatment containers. The transport car (5) comprises a chassis (7, 8, 9 to 12), which travels along the trajectory of the objects (4), at least one pivot arm (50, 51), connected to the chassis (7, 8, 9 to 12), a mounting (61) joined to the pivot arm (50, 51), for at least one object. The translational displacement and the pivoting displacement of the at least one pivot arm (50, 51) and the mounting (61) are effected by independent drive devices. In order to reduce the energy required for the pivoting of the pivot arms (50, 51), at least one energy store (42) is provided, which buffers the energy released on dropping the object as elastic energy and from which the buffered energy can be recovered to support the upwards motion of the object.
摘要:
A hot melt adhesive dispensing unit includes an adhesive supply for receiving solid or semi-solid hot melt adhesive material, an adhesive supply heater associated with the adhesive supply for melting the solid or semi-solid hot melt adhesive material into a liquid hot melt adhesive material, a manifold connected to the adhesive supply and including a flow rate sensor for measuring a flow rate of the liquid hot melt adhesive material, the flow rate sensor generating flow rate information, a pump connected to the manifold for pumping liquid hot melt adhesive material from the adhesive supply into the manifold, the pump including a pump motor, and a variable frequency drive for controlling the pump motor. The variable frequency drive is in communication with the flow rate sensor for receiving the flow rate information and the pump motor for controlling the speed of the pump motor.
摘要:
The invention relates to a plant for the treatment, in particular the cataphoretic dip coating of objects, in particular of vehicle chassis, comprising at least one transport car (5) which runs the objects (4) through the plant and introduces and retrieves the above to and from several treatment containers. The transport car (5) comprises a chassis (7, 8, 9 to 12), which travels along the trajectory of the objects (4), at least one pivot arm (50, 51), connected to the chassis (7, 8, 9 to 12), a mounting (61) joined to the pivot arm (50, 51), for at least one object. The translational displacement and the pivoting displacement of the at least one pivot arm (50, 51) and the mounting (61) are effected by independent drive devices. In order to reduce the energy required for the pivoting of the pivot arms (50, 51), at least one energy store (42) is provided, which buffers the energy released on dropping the object as elastic energy and from which the buffered energy can be recovered to support the upwards motion of the object.
摘要:
A hot melt adhesive dispensing unit includes an adhesive supply for receiving solid or semi-solid hot melt adhesive material, an adhesive supply heater associated with the adhesive supply for melting the solid or semi-solid hot melt adhesive material into a liquid hot melt adhesive material, a manifold connected to the adhesive supply and including a flow rate sensor for measuring a flow rate of the liquid hot melt adhesive material, the flow rate sensor generating flow rate information, a pump connected to the manifold for pumping liquid hot melt adhesive material from the adhesive supply into the manifold, the pump including a pump motor, and a variable frequency drive for controlling the pump motor. The variable frequency drive is in communication with the flow rate sensor for receiving the flow rate information and the pump motor for controlling the speed of the pump motor.
摘要:
A semipermeable gas separation membrane is plasma deposited from liquid organosiloxane monomer having at least three silicon atoms and an alpha hydrogen atom. The semipermeable membrane may be employed as a gas-selective membrane in combination with a porous substrate.