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PVC sliding contact line rail extrusion die for building tower crane

A technology for extruding molds and trolley wires, which is applied in the field of extrusion molds for PVC trolley line rails of building tower cranes, can solve problems such as unqualified trolley line rails, deformation and bending of trolley line grooves, and affecting use safety, etc., to achieve Improve molding quality, reduce scrap rate, improve simple effect

Inactive Publication Date: 2020-06-23
湖北星科模具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The sliding contact line on the building tower crane is usually a relatively standard track made of extruded PVC profiles. This profile track is conducive to standardized laying and installation. The profile structure has symmetrically arranged cavities on both sides. There are also small chambers with small compartments (see attached figure 1 ), the profile of this type of cavity usually does not have a shaping mold at the molding exit, but is provided with a water tank for cooling, but even in this case, the small cavity inside the profile often leads to corresponding sliding contact grooves If there is deformation and bending, such a trolley line track must be unqualified, which will affect the safety of actual use

Method used

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  • PVC sliding contact line rail extrusion die for building tower crane
  • PVC sliding contact line rail extrusion die for building tower crane
  • PVC sliding contact line rail extrusion die for building tower crane

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Embodiment Construction

[0011] see Figure 1-Figure 3 , the present invention is a PVC trolley line track extrusion die for building tower cranes, including a die 2, a support plate 4, a mold body 5 and a mandrel 3, the cavity in the die and the profile of the PVC trolley line track The cross-section structure of the PVC trolley line track profile includes two symmetrically arranged profile cavities, and there are two cavity positions corresponding to the PVC trolley line track profile cavity at the outlet of the die. Set of special-shaped flushing devices, each set of special-shaped flushing devices includes a flushing chamber 8 arranged in the mandrel at the outlet of the die, and a water inlet pipe 6 is connected to the side of the flushing chamber outward. Lead out from the gap of the profile cavity of the PVC trolley line track to avoid interference; each cavity wall of each flushing water cavity is provided with a water spray port 7 facing each inner cavity of the profile cavity of the PVC trol...

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Abstract

The invention relates to a PVC sliding contact line rail extrusion die for a building tower crane. The PVC sliding contact line rail extrusion die comprises an opening die, a support plate, a die bodyand a core rod, a cavity in the opening die is matched with a section structure of a PVC sliding contact line rail profile, two sets of special-shaped flushing devices are arranged at the positions,corresponding to an inner cavity of a PVC sliding contact line rail profile cavity, of a discharging port of the opening die, each set of special-shaped flushing device comprises a flushing cavity formed in the position, at the discharging position of the opening die, of the core rod, the side face of each flushing cavity is outwards connected with a water inlet pipe, the water inlet pipe is led out from a gap of the PVC sliding contact line rail profile cavity so as to avoid interference, and each inner cavity, facing the PVC sliding contact line rail profile cavity, of the cavity wall of each flushing cavity is provided with a water injection nozzle. Although the improvement is simple, the traditional mold structure for cooling and shaping from the outside of the profile is changed, so that the molding quality of the produced PVC sliding contact line rail profile is greatly improved, and the rejection rate is reduced.

Description

technical field [0001] The invention relates to the technical field of profile extrusion dies, in particular to a construction tower crane PVC trolley line rail extrusion die. Background technique [0002] The sliding contact line on the building tower crane is usually a relatively standard track made of extruded PVC profiles. This profile track is conducive to standardized laying and installation. The profile structure has symmetrically arranged cavities on both sides. There are also small chambers with small compartments (see attached figure 1 ), the profile of this type of cavity usually does not have a shaping mold at the molding exit, but is provided with a water tank for cooling, but even in this case, the small cavity inside the profile often leads to corresponding sliding contact grooves If there is deformation and bending, such a trolley line track must be unqualified, which will affect the safety of actual use. Contents of the invention [0003] The object of t...

Claims

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Application Information

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IPC IPC(8): B29C48/30B29C48/89
Inventor 王中芳谢俊保赵东海
Owner 湖北星科模具有限公司
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