CN100410006C

CN100410006C - Production process for steel filtering bottle containing built-in filtering screen

Info

Publication number: CN100410006C
Application number: CNB2006100331601A
Authority: CN
Inventors: 伦巨荣; 李顺安
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-25
Filing date: 2006-01-25
Publication date: 2008-08-13
Anticipated expiration: 2026-01-25
Also published as: CN1836834A

Abstract

The present invention relates to a manufacture process of steel filter flasks, which is used for filter flasks, reservoirs and silencers arranged on air-conditioned compressors. The manufacture process of the steel filter flask has the orderly steps of feed preparation, baiting, rotary compression on one end, deoiling, filter screen embedment, positioning, rotary compression on the other end, light recovery and rust removal, welding of an inlet pipe and an outlet pipe, airtight check, vacuum pumping, filling of antirust agents and packaging. Through the manufacture process, the present invention has the advantages that the cost of the present invention is lower than that of the existing filter flasks, reservoirs and silencers used for the air-conditioned compressors; the problem of the manufacture process of the steel filter flask after the arrangement of a built-in filter screen, which is not related in the prior art is solved by the present invention.

Description

A kind of manufacturing process of steel filtering flask of built-in screen pack

Technical field:

The present invention relates to a kind of manufacturing process of steel filtering flask of built-in screen pack, be used on filtering flask, reservoir and the silencer on the compressor of air conditioner more.

Background technology:

Present compressor of air conditioner is with the manufacturing process of filtering flask, reservoir and silencer, is cylindrical shell with the copper pipe how, and part producing person uses upper and lower two halves steel stretching cylindrical shell instead, is embedding the technology of welding behind the screen pack.The former causes cost high because of the copper material costliness, and the latter is many because of the punching stretch forming process, the cycle is long, and cost reduces limited.

An existing Chinese patent application number be the technology that is called " manufacturing process of steel reservoir cylindrical shell " of CN02146621.1, and its thinking is similar to the manufacturing process of copper reservoir cylindrical shell.The solution of this invention is: selecting the ST14 cold drawing steel tube for use is raw material, through get the raw materials ready, cut-out and mould pressing are a whole and weldless steel reservoir cylindrical shell.This inventor thinks: " the mould pressing technical difficulty of steel cylinders is bigger, relates to the mechanics of materials, composition, performance, heat treatment, flow harden, spinning breakage, extends technology such as shapeless.In spinning process, because friction is easy to generate overheated, burning, form sclerosis, cause obstacle for continuing spinning, if process improperly, mouth of pipe thickening, and cracking causes product rejection.Therefore, to steel reservoir cylindrical shell mould pressing the time, must pay much attention to, must solve one by one.This invention is also thought: note raw material, cutter, equipment, rotating speed, the amount of feeding are constantly explored, repetition test could be determined the technology of the seriation that a cover is successful, and finally obtain the qualified steel reservoir cylindrical shell of spinning ".

But, how could obtain the qualified steel reservoir cylindrical shell of spinning? bypassing the theme filtering flask does not earlier talk.This patent is only said " must solve one by one " on its manufacturing process, and " constantly exploring repetition test " lacks the concrete technical measures of implementing mould pressing.Such as: spinning cutter, select equipment, materials behavior etc. for use, only rest on the conceptive of " spinning " two words.To how solving the spinning breakage? how to solve burning and sclerosis? how to solve mouth of pipe thickening? more how to avoid series of process technical problems such as crackle and product rejection all to describe, and these are exactly concerning the success or failure of spin forming method.

Summary of the invention:

The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of and can effectively reduce cost, the manufacturing process of the simple truly feasible steel filtering flask of technology.

Technical scheme provided by the invention for achieving the above object is:

The manufacturing process flow of steel filtering flask is followed successively by: get the raw materials ready, blanking, spinning one end, oil removing, embedding screen pack, beat location, the spinning other end, light reduction rust cleaning, welding into and out of tracheae, airtight check, vacuumize, fill antirust agent and packing.

Referring to implementing illustration: filtering flask involved in the present invention, adopt the cold drawing steel tube material, through cutting into pipe (1), it is clamped on the jig (2) of spinning machine (Fig. 2) main shaft.Spinning cutter (Fig. 3) is made up of support (3), bearing (4) and spinning roller (5), is fixed on the spinning machine planker (6).Be shaped on the circular arc of certain radius on the spinning roller (5), and can bear footpath, axial load simultaneously.The spinning cutter drives (also can adopt the pattern method) by longitudinal and transverse mixing stepper motor (7), (8), does plane curve movement.When the spinning machine main shaft drives pipe (1) rotation with certain rotating speed, automatically (temperature is not given birth to oxide-film with cylinder inner surface to heating apparatus (9) to the heating of pipe spinning position at times, and not having the spinning hardening phenomenon is as the criterion), according to the material difference, but also cold conditions spinning, promptly heating-up temperature is 0～600 ℃.At this moment, spinning roller (5) is done compound curvilinear motion under the drive that mixes stepper motor (7), (8), implement spinning with the different curvilinear paths (Fig. 4) of approaching filtering flask configuration design bus gradually, thereby avoided disadvantages such as spinning breakage, burning, flow harden and crackle.When the spinning size requires near drawing, axially penetrate the filtration bottleneck by tailstock (10) clamping plug (11) (external diameter is identical with filtration bottleneck endoporus), with accurate control bottleneck size, make it can not produce the phenomenon of mouth of pipe thickening or wall unevenness.

The cylindrical shell of one end spinning is after embedding screen pack (12), upper and lower needle mould (13), (14) that the adjustable site of adjusting is installed are gone up in employing at punch press (Fig. 5), pressing close on the corresponding with it barrel outer surface of screen pack, charge and attack the anchor point (15) of several outer recessed convexes of garden Zhou Junbu, with fixing screen pack (12) embedded location.Afterwards, again with the identical method spinning other end, screen pack is enclosed in the tube.

Yet, produced new problem again thereupon, promptly when secondary spinning, will make cylinder inner surface, especially double wall (16) oxidation slightly between it and screen pack ring support, even produce rust staining.The oxide of cylinder inner surface can have been washed it with acid pickling and rust removing method one, but not only the oxide difficulty between double wall remove, and can make rust remover therebetween residual, form new oxidation, this is that filtering flask specification requirement institute is unallowed.

The present invention adopts " iron pipe continous way gas shield bright heat treatment furnace " head it off; mist (the hydrogen 75% that promptly utilizes supporting liquefied ammonia to decompose; nitrogen 25%) enter burner hearth, reach the effect of gas shield, metallic reducing, rust cleaning dedusting, glossy surface.

At the filtering flask semi-finished product of bright heat treatment furnace terminal, enter the welding of soldering production line again into and out of tracheae, after airtight check, be sent to immediately and vacuumize, fill antirust agent and packaging process, finish a complete set of explained hereafter of steel filtering flask.

The present invention can reach following beneficial effect by above manufacturing process: the first, lower with filtering flask, reservoir and silencer cost than existing compressor of air conditioner; The second, the spin forming method of failing to describe in " manufacturing process of the steel reservoir cylindrical shell " patent that provides background technology to mention; Three, solve the manufacturing process difficult problem of the steel filtering flask behind the built-in screen pack that existing technology fails to relate to.

Description of drawings:

Fig. 1: the manufacturing process flow schematic diagram of steel filtering flask;

Fig. 2 A: rotary pressure machine structure side view; Fig. 2 B: rotary pressure machine structure vertical view:

Fig. 3: spinning cutter structure schematic diagram;

Fig. 4: spinning track schematic diagram;

Fig. 5 A: punch press and needle mould structural representation;

Fig. 5 B: be the A place structure for amplifying schematic diagram of figure five A.

The specific embodiment:

See that shown in the accompanying drawing 1, the technological process of present embodiment is followed successively by: get the raw materials ready, blanking, spinning one end, oil removing, embedding screen pack, beat location, the spinning other end, light reduction rust cleaning, welding into and out of tracheae, airtight check, vacuumize, fill antirust agent and packing.

The cold drawing steel tube material is adopted in the manufacturing of the filtering flask that present embodiment is related, through being cut into the pipe 1 that meets the drawing requirement, pipe is clamped on the jig 2 of spinning machine (Fig. 2 A, Fig. 2 B).Spinning cutter (Fig. 3) is made up of support 3, bearing 4 and spinning roller 5, is fixed on the spinning machine planker 6, is driven by longitudinal and transverse mixing stepper motor 7,8.When spinning machine drove pipe 1 rotation, heating apparatus 9 was automatically at times to pipe spinning position appropriate heating.At this moment, spinning roller 5 is implemented spinning with the different curvilinear paths (Fig. 4) of approaching filtering flask configuration design bus gradually under the drive that mixes stepper motor 7,8.When the spinning size requires near drawing, axially penetrate the filtration bottleneck by tailstock 10 clamping plugs 11 (external diameter is identical with filtration bottleneck endoporus dimensional requirement), with accurate control bottleneck size.

See shown in Fig. 5 A, Fig. 5 B that the cylindrical shell of spinning one end adopts the upper and lower needle mould of installing 13,14 after embedding screen pack 12 on punch press,, charge and attack several anchor points 15, with fixing screen pack 12 embedded locations pressing close on the corresponding with it barrel outer surface of screen pack.Subsequently, again with the identical method spinning other end, screen pack 12 is enclosed in the tube.At this moment, because of the spinning second time, will make cylinder inner surface and and the screen pack ring support between double wall 16 oxidation or corrosion slightly.The present invention adopts " iron pipe continous way gas shield bright heat treatment furnace " head it off, promptly utilizes protective gas to enter burner hearth, plays the effect of rust cleaning dedusting.

At the filtering flask semi-finished product of bright heat treatment furnace terminal, enter soldering production line welding in real time into and out of tracheae, after airtight check, be sent to immediately vacuumize, inflated with nitrogen protection and packaging process, produce qualified steel filtering flask.

The embodiment of the above is preferred embodiment of the present invention only, is not to limit practical range of the present invention with this, so the equivalence that all shapes according to the present invention, structure and principle are done changes, all should be covered by in protection scope of the present invention.

Claims

1. the manufacturing process of the steel filtering flask of a built-in screen pack, its filtering flask is made up of the air inlet pipe and the escape pipe at steel cylindrical shell, built-in screen pack and cylindrical shell two ends that cold drawing steel tube one whole spinning forms, it is characterized in that: this filtering flask successively through get the raw materials ready, blanking, spinning one end, oil removing, embedding screen pack, beat location, the spinning other end, light reduction rust cleaning, welding into and out of tracheae, airtight check, vacuumize, fill antirust agent and technology of the package forms; The spinning cutter includes support (3), bearing (4) and spinning roller (5), is fixed on the spinning machine planker (6), is shaped on the circular arc of certain radius on the spinning roller (5), and can bear footpath, axial load simultaneously; Spinning roller (5) is under the drive that mixes stepper motor (7,8) or adopt the pattern method to do compound curvilinear motion, implements spinning with the different curvilinear paths of approaching filtering flask configuration design bus gradually; When the spinning size requires near drawing, adopt and axially penetrate the filtration bottleneck by tailstock (10) clamping plug (11).

2. the manufacturing process of the steel filtering flask of a kind of built-in screen pack according to claim 1 is characterized in that: in spinning process, look material cylindrical shell spinning position appropriateness is heated 0～600 ℃.

3. the manufacturing process of the steel filtering flask of a kind of built-in screen pack according to claim 1, it is characterized in that: adopt the upper and lower needle mould (13,14) that the adjustable site of adjusting is installed on punch press, pressing close on the corresponding with it barrel outer surface of screen pack (12), charging and attacking the anchor point of several outer recessed convexes of circumference uniform distribution.

4. the manufacturing process of the steel filtering flask of a kind of built-in screen pack according to claim 1; it is characterized in that: for eliminate spinning to the filtering flask inner surface and and the screen pack ring support between the double wall oxidation corrosion, adopted iron pipe continous way gas shield bright heat treatment furnace rust cleaning dedusting, glossy surface.