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Molding method of scroll and scroll

A molding method, scroll-type technology, applied in the direction of rotary piston pump, rotary piston machine, machine/engine, etc., can solve the problems of demoulding draft angle, complicated process, affecting dimensional accuracy, etc., to achieve guaranteed size Precision, simple processing technology, good mechanical properties

Inactive Publication Date: 2012-06-27
王少朋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention uses a kind of warm extrusion between cold extrusion and hot extrusion to extrude the heated but still solid aluminum alloy billet through a die, so that the mechanical strength of the formed scroll is higher than that of cast iron. The mechanical strength of the scroll formed by this method is high, and the problem of air holes or blisters is solved; however, the process is relatively complicated, and a closed mold is required, which has the problem of demoulding and the setting of the draft angle (which will make the scroll The height of the spiral line has a certain inclination, which affects the dimensional accuracy, otherwise it will be difficult or even impossible to remove from the mold. As we all know, the accuracy of the scroll line determines the quality of the scroll compressor), and because the extrusion process itself is A heating process, re-extrusion on the basis of heating the billet and closing the cavity may cause the problem of mold bursting

Method used

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  • Molding method of scroll and scroll
  • Molding method of scroll and scroll
  • Molding method of scroll and scroll

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Form the scroll profile 11 according to the following scroll profile molding method;

[0034] Since the scroll profiles of the movable scroll and the fixed scroll are the same or similar, we set them as completely consistent in this embodiment, so the formation of the scroll profiles does not need to be distinguished. Its molding method is as follows:

[0035] 1. According to the structural parameters of the scroll profile 11, a cavity 21 is made as a through-type scroll profile mold 2;

[0036] 2. Through hot extrusion (only heating the billet to the forging process temperature, of course different forging temperatures are different for different raw materials) to make the scroll profile blank B (generally aluminum alloy rod or steel) pass through the scroll profile mold 2 The through-type cavity 21 is extruded to obtain the scroll profile 3;

[0037] 3. According to the height parameter of the scroll profile, the scroll profile 3 is cut to obtain the scroll profi...

Embodiment 2

[0054] The difference between this embodiment and the first embodiment is that the scroll end covers of the fixed scroll and the movable scroll are not formed by extrusion, but formed by existing die-casting technology. The swirl-shaped wire is still extruded according to the molding method of the swirl-shaped wire in the first embodiment.

[0055] In this way, the fixed scroll scroll end cover J12 and the outer ring J13 of the fixed scroll can be integrally formed, and an installation groove corresponding to the scroll profile line 11 is reserved on the scroll end cover, without further It is set as a hollow groove, but it can be a blind groove, and the width of the groove is slightly smaller than the width of the scroll line; as Figure 14 shown. Then, the scroll profile obtained according to the scroll profile forming method in the first embodiment is fixed on the scroll end cover J12 of the fixed scroll by way of interference fit.

[0056] Similarly, the movable scroll s...

Embodiment 3

[0059] The difference between this embodiment and Embodiment 1 is that the scroll profile 11, the scroll end cover J12 of the fixed scroll, the outer ring J13 and the scroll end cover D12 of the movable scroll are all made by cold extrusion ( Without heating the billet) the billet (usually an aluminum alloy rod) is extruded through the through-type cavity of the mold, and then assembled.

[0060] Of course, the present invention also has other deformation forms, such as the scroll end cover of the movable scroll is obtained by extruding through a through-type die, and the scroll end cover and outer ring of the fixed scroll are integrally formed by die-casting, etc. The technical personnel process the scroll profile and the scroll end cover separately, and then assemble the scroll disc, all of which fall within the protection scope of the present invention.

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Abstract

The invention relates to a molding method of a scroll of a scroll compressor, and a scroll processed by the method. The scroll consists of a vortex-type line and a vortex end cap. The method comprises the following steps: 1. molding the vortex-type line according to the structure parameters of the vortex-type line; 2. molding the vortex end cap according to the structure parameters of the vortex end cap; and 3. fixedly installing the vortex-type line and the vortex end cap in a matching mode to obtain the scroll. Due to that the vortex-type line and the vortex end cap are processed respectively as two parts in the invention, and the two parts are finally installed to form the scroll in a matching mode, the processing technique is simple, the production efficiency is high, and the size accuracy can be ensured.

Description

technical field [0001] The invention relates to the manufacture of a scroll compressor, in particular to a method for processing and forming a scroll disk of a scroll compressor and the scroll disk processed by the method. Background technique [0002] Scroll compressors are widely used in people's production and life as a kind of machinery that compresses or expands fluids such as gas or liquid. The scroll compressor includes two scrolls with basically the same or similar shape, and the scroll is composed of a scroll line and a scroll end cover. Existing scroll compressor scrolls are generally formed into scroll blanks by casting, die-casting, and squeeze-casting, and then machine-cut and finished or directly machined to form scrolls (the scroll line and scroll end cover are integrated forming). Such as patent ZL96112467.9, published on August 20, 1997, discloses a lost-foam casting method for manufacturing scrolls, comprising the following steps: a) placing a model whose...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00F04C18/02
Inventor 王少朋
Owner 王少朋
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