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CN-121972609-A - Wax mould die for casting of pipe

CN121972609ACN 121972609 ACN121972609 ACN 121972609ACN-121972609-A

Abstract

The invention discloses a wax mould of a casting of a mold-shaped pipe, which belongs to the technical field of investment casting moulds and comprises a mould and a mould core, wherein the mould comprises an upper mould and a lower mould, the upper mould and the lower mould are clamped to form a wax mould cavity of a complete mold-shaped structure, a wax injection port is arranged on the outer side of the mould, a wax mould runner is arranged on the inner side of the mould, two ends of the wax mould runner are respectively connected with the wax mould cavity and the wax injection port, the wax mould cavity comprises a first wax mould cavity and a second wax mould cavity which are communicated, the mould core comprises a direct-drawing mould core and a side-drawing mould core which are detachably connected, one end of the direct-drawing mould core is fixedly provided with a first positioning block, one end of the side-drawing mould core is provided with a second positioning block, and the mould is correspondingly provided with a first clamping groove for limiting the first positioning block, a second clamping groove for limiting the second positioning block and a groove for embedding one end of the direct-drawing mould core. The wedge-shaped surface is attached to the compaction positioning block during die assembly, so that the position of the die core in the wax die cavity is kept fixed, and the quality defect that the wall thickness of the wax piece is uneven is effectively avoided.

Inventors

  • CHEN ZHENDONG
  • SHANG XINQUAN
  • WANG YONGYU
  • WANG WENXU
  • LI XU
  • Xie Binren

Assignees

  • 金昌镍都矿山实业有限公司
  • 金川集团股份有限公司

Dates

Publication Date
20260505
Application Date
20260327

Claims (9)

  1. 1. The utility model provides a wax matrix mould of type pipe foundry goods is said, includes mould and mold core, its characterized in that, the mould includes upper mould (100) and bed die (200), upper mould (100) and bed die (200) compound die form the wax matrix die cavity of complete type structure of making a breath, the mold core is the type structure of making a breath and sets up in the wax matrix die cavity, the mould outside is equipped with annotates wax mouth (350), is equipped with mould wax runner (340) in the inboard, the both ends of mould wax runner (340) are connected with wax matrix die cavity and annotate wax mouth (350) respectively; The wax pattern cavity comprises a first wax pattern cavity (310) and a second wax pattern cavity (320) which are communicated, the mold core comprises a direct drawing mold core (410) arranged in the first wax pattern cavity (310) and a side drawing mold core (420) arranged in the second wax pattern cavity (320), the direct drawing mold core (410) is detachably connected with the side drawing mold core (420), one end of the direct drawing mold core (410) is fixedly provided with a first positioning block (430), one end of the side drawing mold core (420) is provided with a second positioning block (440), and the mold is correspondingly provided with a first clamping groove (360) for limiting the first positioning block (430), a second clamping groove (330) for limiting the second positioning block (440) and a groove (370) for embedding one end of the direct drawing mold core (410).
  2. 2. The wax mold for casting of mold-shaped pipe of claim 1, wherein the first clamping groove (360) comprises an upper mold first clamping groove arranged on the upper mold (100) and a lower mold first clamping groove arranged on the lower mold (200), the second clamping groove (330) comprises an upper mold second clamping groove arranged on the upper mold (100) and a lower mold second clamping groove arranged on the lower mold (200), the first positioning block (430) and the second positioning block (440) are respectively provided with a first wedge-shaped surface (451) at one side far away from the mold core, protrusions (452) are respectively arranged at the high end of the first wedge-shaped surface (451), the upper mold first clamping groove and the upper mold second clamping groove are respectively provided with a second wedge-shaped surface matched with the first wedge-shaped surface (451), the lower mold first clamping groove and the lower mold second clamping groove are respectively extended to the outer side of the lower mold (200), and the protrusions (452) of the first positioning block (430) and the second positioning block (440) are respectively positioned in the first clamping groove and the second clamping groove.
  3. 3. The wax mould of the casting of the pipe of claim 1, wherein the straight drawing mould core (410) is provided with a mounting groove (411) which is matched with one end of the side drawing mould core (420), a positioning groove (412) is arranged in the mounting groove (411), and the end part of the side drawing mould core (420) is provided with a positioning protrusion (421) which is matched with the positioning groove (412).
  4. 4. The wax pattern die for casting of casting tube with casting cavity according to claim 1, wherein the side-drawing die core (420) comprises side-drawing die core fixing blocks (460) and side-drawing die core block (462) circumferentially arranged on the side-drawing die core fixing blocks (460), one end of the side-drawing die core fixing blocks (460) is connected with the second positioning block (440), the number of the side-drawing die core block (462) is at least 2, the side-drawing die core fixing blocks (460) are axially provided with dovetail wedges (461), the number of the dovetail wedges (461) is the same as the number of the side-drawing die core block (462), the side-drawing die core block (462) is correspondingly provided with dovetail grooves, and the second positioning block (440) is provided with accommodating grooves (441) for embedding the end parts of the side-drawing die core block (462).
  5. 5. A wax pattern mold for a casting of pipe in accordance with claim 1, wherein the mold has two wax pattern cavities and the two wax pattern cavities are of different configurations.
  6. 6. The wax pattern mold for casting of pipe as in claim 1, wherein the lower mold (200) is provided with a vent groove (202), and the vent groove (202) is used for communicating the wax pattern cavity with the outer side of the lower mold (200).
  7. 7. The wax mold for casting of pipe as claimed in claim 1, wherein the lower mold (200) is provided with a clamp pin (220) and a guide post (210), and the upper mold (100) is correspondingly provided with a clamp hole (110) through which the clamp pin (220) penetrates, and a guide hole (120) through which the guide post (210) penetrates.
  8. 8. A wax mould for casting of pipe as claimed in claim 1, characterised in that the edge of the lower mould (200) is provided with a mould-opening groove (201).
  9. 9. A wax pattern mold for a casting of pipe as in claim 1, wherein the mold and the core are comprised of a light alloy.

Description

Wax mould die for casting of pipe Technical Field The invention belongs to the technical field of investment casting molds, and particularly relates to a wax mold of a casting of a tube. Background Investment casting is an important process in the field of metal casting, before molten metal is poured, an investment pattern matched with the appearance of a casting is needed to be prepared through a special die, then a fusible and easily-shaped material is injected into the die, the investment pattern is taken out after the material is solidified, a casting cavity is molded on the basis of the investment pattern, and the cavity molding modes of different casting processes are different. With the continuous upgrading and development of the petrochemical industry technology, the application scenes of core equipment such as cracking furnaces, catalytic furnaces and the like are more complex, severe requirements are put on the performance of matched spare parts in the cracking furnaces, the catalytic furnaces and the like, and the cracking furnaces, the catalytic furnaces and the like are required to withstand high-temperature and high-pressure working conditions and have excellent corrosion resistance and oxidation resistance. The two casting parts (refer to figure 8) of the pipe are key spare parts of the equipment, and have the characteristics of high production precision requirement, large mass production requirement and complete processing. In the prior art, the preparation links of the wax mould for producing the pipe castings are mainly water-soluble cores, technical defects exist in actual production, the water-soluble cores are low in strength and high in brittleness, breakage easily occurs in the process of filling the cores in the mould, the core filling links lack of a stable positioning structure, the core body is easy to displace and eccentric, the quality defects of uneven wall thickness of wax parts are caused after the water-soluble cores are dissolved later, the rejection rate of products is high, meanwhile, the dissolution time of the water-soluble cores is long, the preparation efficiency of the pipe wax mould is reduced, and the production period is prolonged. Disclosure of Invention The invention aims to provide a wax mould for a pipe casting, which aims to solve the problems in the prior art in the background technology. In order to achieve the above purpose, the invention adopts the following technical scheme: The mold comprises an upper mold and a lower mold, the upper mold and the lower mold are assembled to form a wax mold cavity with a complete mold-shaped structure, the mold core is of a mold-shaped structure and is arranged in the wax mold cavity, a wax injection port is arranged on the outer side of the mold, a mold wax runner is arranged on the inner side of the mold, and two ends of the mold wax runner are respectively connected with the wax mold cavity and the wax injection port; The wax pattern die cavity comprises a first wax pattern die cavity and a second wax pattern die cavity which are communicated, the die core comprises a direct-drawing die core arranged in the first wax pattern die cavity and a side-drawing die core arranged in the second wax pattern die cavity, the side-drawing die core of the direct-drawing die core is detachably connected, one end of the direct-drawing die core is fixedly provided with a first positioning block, one end of the side-drawing die core is provided with a second positioning block, and the die is correspondingly provided with a first clamping groove for limiting the first positioning block, a second clamping groove for limiting the second positioning block and a groove for embedding one end of the direct-drawing die core. Further, the first draw-in groove is including setting up in the first draw-in groove of last mould and setting up in the first draw-in groove of lower mould of last mould, the second draw-in groove is including setting up in the last mould second draw-in groove of last mould and setting up in the lower mould second draw-in groove of lower mould, first locating piece and second locating piece all are equipped with first wedge face in the one side of keeping away from the mold core, and all are equipped with the arch at the high end that is located first wedge face, go up mould first draw-in groove and second draw-in groove all be equipped with first wedge face complex second wedge face, lower mould first draw-in groove and lower mould second draw-in groove all extend to the lower mould outside, the arch of first locating piece and second locating piece is located first draw-in groove of lower mould and lower mould second draw-in groove respectively. Further, the direct-drawing mold core is provided with a mounting groove matched with one end of the side-drawing mold core, a positioning groove is arranged in the mounting groove, and the end part of the side-drawing mold core is provided with a positioning protrusion matched