A bottom machine is provided for a glass processing device to manufacture glass containers from glass tubes. The bottom machine includes one or a plurality of holding units for holding the glass container or glass tube, with the holding units being mounted so as to rotate around an axis of rotation of the bottom machine in order to convey the glass container or glass tube to various processing positions, a pressure source for supplying a gas flow, a duct system communicating with the pressure source for directing the gas flow to the holding units and for feeding the gas flow into the glass tube or into the glass container, with the duct system being designed to be free of gaps.

A plunger assembly for a glass forming machine comprises an assembly housing (6), at which a drive (17) is in contact with a drive spindle, which is supported in an axially non-displaceable manner, via an angular gear, which drive spindle, in turn, engages with a spindle nut, the spindle nut housing (18) of which is set up via an assembly (19) by interpositioning pressing force limiters for transferring the pressing force required for a forming process to two plungers (1, 2). The assembly (19) can be displaced in a non-rotatable manner along two guide columns (7, 8), which are arranged parallel to one another in a housing-fixed manner, and the spindle nut housing (18) engages with two lateral linear guides, which are also arranged in a housing-fixed manner. The connection between the assembly (19) and the spindle nut housing (18) is designed in such a way that only forces in the direction of the pressing force are transferred, so that any other forces and moments originating from the forming process are transferred to the housing, so that in particular the drive spindle is only axially stressed.

Methods and systems for controlling vertical glass distribution are provided. A traversing pyrometer periodically measures a parison actual temperature after the parisons exit a blank mold. The thermal camera takes a thermal image of each glass container after the glass container exits the blow mold. A vertical glass signature extraction module extracts a vertical glass distribution signature. A parison temperature estimator determines a parison estimated temperature for each vertical glass distribution signature obtained based on the vertical glass distribution signature, a most recently measured parison actual temperature and a parison stretch time. A parison temperature summer compares the parison estimated temperature to a parison set point temperature to determine a parison temperature error. A parison temperature control controls a blank mold contact time based on the parison temperature error.

Methods and systems for controlling vertical glass distribution are provided. A traversing pyrometer periodically measures a parison actual temperature after the parisons exit a blank mold. The thermal camera takes a thermal image of each glass container after the glass container exits the blow mold. A vertical glass signature extraction module extracts a vertical glass distribution signature. A parison temperature estimator determines a parison estimated temperature for each vertical glass distribution signature obtained based on the vertical glass distribution signature, a most recently measured parison actual temperature and a parison stretch time. A parison temperature summer compares the parison estimated temperature to a parison set point temperature to determine a parison temperature error. A parison temperature control controls a blank mold contact time based on the parison temperature error.

The invention relates to a glass production method comprising the production of a glass precursor mixture for a glass furnace, in which water, sand and sodium carbonate are mixed in weight proportions of between 0 and 5%, 40 and 65%, and greater than 0 and at most 25% respectively, and, after at least 10 minutes, calcium oxide is added in a weight proportion of between 1 and 20% of the total. The invention relates to a method for producing glass using a mixture containing, in particular, calcium oxide, and a glass melting furnace, said method and furnace using a burner with a flame directed at the glass batch.

A hot-forming device is provided for producing glass containers from a glass tube. The device includes a rotary table mounted so as to be rotationally movable and an assigned drive motor for driving the rotary table. The rotary table includes several holding chucks for holding workpieces distributed around the circumference of the rotary table. The rotary table has a coolant channel that is fluid-tight and through which a coolant can flow to cool.

Provided is a method of manufacturing a glass film, including: a conveying step of conveying an elongated glass film (G) along a longitudinal direction thereof; and a cutting step of irradiating the glass film (G) with a laser beam (L) from a laser irradiation apparatus (19) while conveying the glass film (G) through the conveying step, to thereby separate the glass film (G). The cutting step includes generating a thread-like peeled material (Ge) in a helical shape from an end portion of the separated glass film (G) in a width direction. The thread-like peeled material (Ge) has a width (W) of 180 μm or more and 300 μm or less. In addition, the thread-like peeled material (Ge) has a helical diameter (D) of 80 mm or more and 200 mm or less.

The present invention relates to a system and a method for transferring glass items from machines for shaping glass items of the type that comprises: a rotary cooling platform for receiving, cooling and conveying items formed immediately prior in molds of said shaping machine to a conveyor belt, the rotary cooling platform having a rotational motion towards the left and towards the right, from a first position for receiving items to a second delivery position facing said conveyor belt; first drive means located under the rotary cooling platform in order to rotate same with said rotational motion from said position for receiving items to said second position for delivering items and from said position for delivering items to said position for receiving items; and a pushing mechanism coupled onto the rotary platform, the pushing mechanism being aligned in the first receiving position with each of the recently shaped items of the molds, the pushing mechanism being translated together with said rotary cooling platform from the first position for receiving items to the second position for delivering items; the pushing mechanism having a to-and-fro motion in the second delivery position for pushing the items along a diagonal path, at constant speed, from the rotary cooling platform positioned in said second position towards the conveyor belt in order to place the items aligned above same.

A muffle for a glass tube forming process includes an inlet end coupled to a bowl, an outlet end having an inner dimension larger than an inner dimension of the inlet end, and a sidewall extending from inlet end to the outlet end. A radial distance from a center axis of the muffle to an inner surface of the sidewall increases from the inlet end to the outlet end and the sidewall is substantially free of abrupt changes in the radial distance that produce instability regions within the muffle. The muffle includes a channel between an outer surface of a portion of the sidewall and an insulating layer disposed about the sidewall, the channel being operable to pass a heat transfer fluid into thermal communication with the sidewall to provide cooling to the muffle. Glass forming systems including the muffle and glass tube forming processes are also disclosed.

A mold includes a mold component, a plurality of ejector pins and a stop block. The mold component has a molding surface for forming a glass product and a bottom surface disposed opposite to the molding surface. The mold component defines a plurality of passing through holes through the molding surface and the bottom surface. Each ejector pin passes movably through one corresponding through hole and is configured to separate the glass product from the mold component. The stop block for forming a stop on the ejector pins disposed on one side of the bottom surface. Separates the glass product from the mold component before the glass product is completely cooled down by using the combination of the ejector pins together with the stop block, which can make the cooling of the glass product more uniform.