Temperature measurement component embedded hot runner nozzle structure
AssigneeWistron Corporation
InventorsYuan-Shiang Lin, An-Chen Hung, Li-Chih Chen, Chien-Yu Ko
Life of this patent
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Abstract
A hot runner nozzle structure includes a tubular nozzle and at least one temperature measurement component. The tubular nozzle has an outer wall surface and an inner wall surface defining a flow channel. The tubular nozzle has portions defining at least one thru-hole interconnected the outer wall surface and the inner wall surface. The temperature measurement component has a base and a sensor connected to the base. The base is fixed in the thru-hole. The sensor has a tip protruding beyond the inner wall surface and exposed in the flow channel.
Claims18
A temperature measurement component embedded hot runner nozzle structure, comprising:
- a tubular nozzle having an outer wall surface and an inner wall surface, the inner wall surface defining a flow channel therein, the tubular nozzle having at least one thru-hole interconnected the outer wall surface to the inner wall surface, wherein an inner sidewall of the tubular nozzle defining the thru-hole is formed with a tapped thread thereon, wherein the thru-hole is formed with a counterbore;
- and
- at least one temperature measurement component having a base and a sensor connected to the base, the base fixed in the thru-hole, the sensor having a tip protruding from the inner wall surface and exposed to the flow channel;
- wherein a part of the sensor is received in the thru-hole;
- wherein the base has a screw thread corresponding to the tapped thread, and a screw head arranged at an end thereon distal from the sensor and connects to the screw thread, and the screw head has a head surface engaged to a planar bottom surface of the counterbore, so as to provide a sufficient surface area of contact between the base and the tubular nozzle to seal and prevent molten materials from leaking;
- wherein a part of the screw head is received in the counterbore, and a part of the screw head is protruded from the outer wall surface of the tubular nozzle;
- wherein a height of the tapped thread along the direction of the thru-hole is larger than a height of the screw thread of the base along the direction of the thru-hole, so that an end surface of the screw thread connected to the sensor is lower than an inner surface of the flow channel, thereby a recess space is defined by the end surface of the screw thread and the tapped thread surrounding the sensor;
- wherein a filler material is brazed between the sensor and the base on the end surface of the screw thread, and the filler material is arranged inside the recess space;
- wherein the sensor directly measures temperatures of molten materials in the hot runner nozzle structure.
Dependencies are inferred from the claim text.