Maitiro Ekuwedzera Kwazvo Upenyu Hushumiro hweGoction Molding Machine

Plasticized components of the injection molding machine, pano zvinoreva: Shandisa "dummy" slug kuisa mujekiseni nozzle tipi kuvhara kuyerera chaiko kwezvinhu, rakanyungudika mbiya, Musoro weRabha, rabha reti, Rubber Gasket.

Kana iyo jekiseni kuumba muchina iri kushanda, zvikamu zvakapetwa zvakaita semavhiri emota. Chero bedzi zvavakatangwa, Vachaiswa pasi pekumanikidzwa, kukanganisa, kupokana, uye svina. Kune iyo tireyi, driving on a flat road and operating by a skilled driver can often prolong the service life of the tire.

And when driving on uneven roads with lots of sand and gravel, coupled with frequent emergency braking actions, the pattern on the tire surface is quickly polished and scrapped.

Naizvozvo, to ensure that the injection molding machine is always in good condition, it is necessary to clarify the performance of the injection molding machine used, understand the performance and quality of the zvigadzirwa zvepurasitiki kushandiswa, and strengthen the management of the use of the injection molding machine to reduce failure rates, reduce maintenance costs, and extend The purpose of service life.

Kana iyo jekiseni kuumbwa muchina iri kushanda, zvikamu zvakapetwa zvakaita semavhiri emota. Chero bedzi zvavakatangwa, Vachaiswa pasi pekumanikidzwa, kukanganisa, kupokana, uye svina. Kune iyo tireyi, driving on a flat road and operating by a skilled driver can often prolong the service life of the tire.

And when driving on uneven roads with lots of sand and gravel, coupled with frequent emergency braking actions, the pattern on the tire surface is quickly polished and scrapped.Therefore, kuve nechokwadi chekuti jekiseni rekuumba muchina unogara uri mukati mamiriro akanaka, it is necessary to clarify the performance of the injection molding machine used, kunzwisisa kushanda uye kunaka kwezvinhu zvepurasitiki zvinoshandiswa, and strengthen the management of the use of the injection molding machine to reduce failure rates, reduce maintenance costs, uye kuwedzera Chinangwa chehupenyu hwebasa.

Kazhinji kutaura, izvo zvinotevera zvinokanganisa hupenyu hwesevhisi yeplasticizing system yemuchina wekuumba jekiseni:

Chekutanga, mhedzisiro yekupfeka kwemagetsi:

Mamwe mapurasitiki akagadziridzwa anowedzerwa nemaminerari, girazi fiber, upfu hwesimbi, nezvimwewo. Kuvepo kwezvinhu izvi kunokonzeresa yunifomu yemagetsi kupfeka pane screw, zvikamu zvidiki zvitatu uye mbiya yakanyunguduka panguva yepurasitiki uye jekiseni kugadzirisa. Iyo nitrided layer uye chromium-plated layer inogona kupepereswa kure. Mushure mekuputika, mukaha pakati pe screw uye melt barrel inowedzera, iyo inoderedza iyo plasticizing effect, kunowedzera kubuda kwejekiseni, inoderedza kushanda kwejekiseni, uye inoderedza kurongeka kwekugadzirisa.

Naizvozvo, kuitira kuderedza kupera uye kuwedzera hupenyu hwebasa hwezvinhu zvepurasitiki, tembiricha inofanira kuwedzerwa zvakakodzera panguva yekugadzirisa uye screw speed inofanira kuderedzwa. Kushandiswa kwechrome plating kana bimetallic solutions kunogona kunyatso kudzivirira abrasion.Chechipiri, mechanical kuneta uye overload basa:

Iwo anogadzirisa anogara achiseta-yakadzika-tembiricha basa uye anogara achiseta yakakwira-kumhanya uye yakanyanya-kumanikidza basa., iyo inoderedza zvishoma nezvishoma kushanda kwezvikamu zvepurasitiki. Semuyenzaniso, paunenge uchigadzira PC uye PA mapurasitiki, kana tembiricha isingaite zvinodiwa, iyo viscosity yepurasitiki yakakura kwazvo. Kana iyo sol chiito ichimanikidzwa panguva ino, iyo sol pressure uye sol torque inofanira kuwedzerwa, nokudaro kuwedzera kushushikana kuneta kwe screw. Panguva imwe, nokuti viscosity yepurasitiki yakanyunguduka yakanyanya kwazvo panguva ino, kudzvanywa kwejekiseni uye kumhanya kwejekiseni kunofanirwa kuwedzerwa pakuumba jekiseni, iyo inowedzera kukanganisa uye mutoro wezvikamu zvitatu zviduku, uye inomhanyisa kupfeka kwavo uye kusagadzikana kuputsika.

Chetatu, zvinhu zvevanhu (kusanganisira kukanganisa kwekushanda kana kushanda zvisiri pamutemo, Nekuti iyo IC tray ine huremu huremu):

1). Kana tsvina yesimbi yakasanganiswa mupurasitiki uye inopinda mubhodhoro yakanyunguduka pamwe chete, nekuda kweiyo extrusion effect, screw edges, grooves, zvindori zverabha, rubber gaskets ye screw ichapfekwa kune madhigirii akasiyana, izvo zvichaita kuti jekiseni kuumba muitiro kusagadzikana uye nyore Gadzira mavara matema uye dema streaks;

2), wedzera purasitiki isiriyo, wedzera tembiricha yepurasitiki kune yakanyunguduka mbiya yakaiswa kune yakaderera tembiricha, zvichikonzera kuwanda kwe torque ye screw panguva ye sol, kukonzera kushushikana kuneta kwe screw;

3) Kutonhora kutanga imhando yekushushikana kwepfungwa uye kusatarisira basa maitiro. Kana tembiricha ye sol cylinder isati yasvika seti inodiwa tembiricha kana ichangosvika, izvo zvakasara mudhiramu zvinotora kupisa kubva murin'i yekudziya kuti tembiricha ikwire, nepo tembiricha yemukati yemukati ichiri yakaderera. Naizvozvo, panguva yekutonhora kutanga Iyo screw torque yakakura kwazvo, kukonzera kushushikana kuneta pane sikuruu. Muzviitiko zvakanyanya, sikuruu yacho ichamonywa nekukurumidza, uye musoro werabha nemhete yerabha zvichamonyoroka.

Zvizhinji zvesimbi tsvina inopinda mu sol cylinder inounzwa neyakapwanyika zvinhu. Naizvozvo, kuparara kweblade yecrusher kunofanira kuongororwa nguva dzose, uye blade inofanira kuchinjwa pakarepo kana ikawanikwa yakapfekwa.

Pane rimwe divi, tarisa uye chenesa magineti muhopi isina chinhu nguva nenguva. Kana zvimedu zvesimbi zvakatenderedza magineti zvazara, simba rekushambadza rezvimedu zvesimbi pachikamu chekunze richave risina simba. Kunyange kana yakwezvwa, ichashambidzwa nyore nyore nepurasitiki inoramba ichiyerera uye kupinda mu sol cylinder pamwe chete.

Kudzora kwakaringana tembiricha ye mold ndeye kudzivirira warpage, kuunganidza zvakarurama, debug uye kutsiva zvikamu:

Ichi chikamu chakakoshawo zvakanyanya. Kana gungano re sol barrel risina kusimba zvakakwana, screw inobata sol barrel kana sol kana glue yaiswa jekiseni, kuita kuti sikuruu kana kuti sol barrel ipfeke. Naizvozvo, iyo yehunyanzvi mamiriro emidziyo inofanirwa kuongororwa nguva dzose, and attention should be paid to the abnormal phenomenon of the parts in the process.Fifth, damage caused by improper workmanship:

1) Long-term use of high back pressure sol can accelerate the wear of the three small plasticized parts. This situation generally occurs when toner is used. Since the toner is difficult to disperse, the method of increasing the back pressure is adopted.

2) For high-viscosity plastics, fast sol is used when sol is used to cause stress fatigue of the screw;

3) For high-temperature plastics, especially glass fiber-added plastics, high-speed sol method should not be used.

Sixth, chemical corrosion:

The corroded metal material is iron. Common corrosive plastics include: flame-retardant plastics, acidic plastics, PVC plastics, nezvimwewo. After the screw, melt barrel and flange are corroded, some pits are formed on the surface, and the surface is rough, which makes the flow resistance of the melt when the injection molding machine works.

Some materials are easy to adhere to the surface, causing decomposition and carbonization. Severe corrosion will increase the gap between the screw and the melt barrel, kuwedzera kudonha, and reduce the injection efficiency.

Whether it is a flame-retardant plastic or an acid glue, iyo plastiki will decompose acid gas when processed at high temperature, and the plastic melt is easy to be carbonized and stick to the metal. Naizvozvo, on the one hand, the plasticized components should be made of stainless steel or surface chromium plating; Mushure mekuwedzera kwayo, low back pressure, low temperature and low shear processes should be used as much as possible in the production and processing to reduce the degradation of the plastic;

In the third aspect, due to the thermal sensitivity of the above plastics, too high temperature or too long heating time.it is easy to decompose, degrade and carbonize the plastics. Naizvozvo, the production process should avoid and reduce artificial shutdowns. If you need to stop the machine, you should lower the temperature first, close the material gate.And after the melt in the sol tube is finished, switch to PP or PS to clean the sol tube before stopping the muchina.

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