CN111216315A

CN111216315A - Automatic selection feeding system of injection molding machine for automotive interior parts and control system thereof

Info

Publication number: CN111216315A
Application number: CN201911223680.2A
Authority: CN
Inventors: 朱华明; 辛效兵; 包俊群; 于喆; 张楠; 薛贵东; 从杰; 薛玉杰; 王严
Original assignee: Shenyang Jinbei Yanfeng Automotive Interior System Co Ltd
Current assignee: Shenyang Jinbei Yanfeng Automotive Interior System Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-06-02
Anticipated expiration: 2039-12-04
Also published as: CN111216315B

Abstract

The automatic selection feeding system of the injection molding machine for automotive interior parts and the control system thereof overcome the problems that the prior art can not automatically select raw materials, the time consumption of the material changing process is too long, the efficiency is low, the material changing error is easy to occur, the product is scrapped, and the yield and the quality are influenced, and are characterized in that a plurality of drying material tanks are connected with small material tanks of a plurality of injection molding machines through material distributing valves and feeding pipelines, a mold ID coding plug and a tool fixture ID coding plug are installed at the mold installation end of each injection molding machine, and a PLC control system checks whether the injection molding machines and the drying material tanks are short of materials and carries out feeding in a round-robin mode; the automatic feeding device has the advantages of realizing flexibility of a feeding mode, realizing automatic raw material selection, reducing manual operation, effectively preventing the raw material from being selected by an injection molding machine by mistake, realizing continuous production and monitoring functions, improving the production efficiency and the product quality of products, being flexible in feeding mode, saving energy, reducing consumption, saving single material changing time and being high in production efficiency.

Description

Automatic selection feeding system of injection molding machine for automotive interior parts and control system thereof

Technical Field

The invention belongs to the technical field of industrial automation, and particularly relates to an automatic selection feeding system of an injection molding machine for automotive interior parts and a control system thereof.

Background

An injection molding machine is a molding apparatus for making thermoplastic plastics or thermosetting plastics into plastic products of various shapes. The production process of the plastic product comprises the following steps: the raw materials are sent into a charging barrel, the raw materials are sent into an injection molding machine for melting and plasticizing after being dried, and high pressure is applied to the molten plastic to inject the molten plastic to fill a mold cavity; another major problem is that the drying degree of the raw material in the charging barrel of each injection molding machine is not completely consistent, which results in different quality of the products in the same batch produced by different injection molding machines and reduces the quality of the plastic products. The invention discloses a centralized feeding system of injection molding machines, which is disclosed by the patent application with the application number of CN201410693255.0 and comprises a plurality of injection molding machines, a material suction device, a main material barrel and a plurality of material distribution barrels, wherein the material suction device is arranged at the outlet of the main material barrel, the outlet of the material suction device is connected with the plurality of injection molding machines, the material distribution barrel is arranged at the feed inlet at the front end of each injection molding machine, an electromagnetic valve is arranged on a pipeline between each material distribution barrel and the material suction device, and sensors are respectively arranged at the upper part and the lower part of. The system uniformly provides raw materials for the plurality of material distributing cylinders through the main material cylinder, so that the raw materials are dried uniformly, the consistency of plastic products produced by different injection molding machines is high, however, the system only has one main material cylinder, the raw materials are provided for the plurality of material distributing cylinders through the main material cylinder, the plurality of material distributing cylinders are only suitable for simultaneously using one raw material, the selection of the raw materials cannot be carried out, if the raw materials are replaced, the main material cylinder and the plurality of material distributing cylinders are required to be completely replaced, and all pipelines are cleaned.

The utility model discloses a centralized feeding system's blending device, centralized feeding system includes many injection molding machines, a raw materials that is used for providing the raw materials for many injection molding machines adds the bucket, a raw materials desiccator that is used for adding the raw materials of bucket supply with the raw materials carries out heat drying, blending device includes the support frame, locate on the support frame respectively can add the first feed mechanism of bucket and many raw materials desiccator intercommunication with many raw materials, locate on the support frame respectively can be with the second feed mechanism of many injection molding machines and many raw materials desiccator intercommunication, arbitrary one or many in many raw materials add the bucket can with arbitrary one or many intercommunications in many raw materials desiccators, arbitrary one or many in many injection molding machines can with arbitrary one or many in many raw materials desiccators intercommunication. In the production and manufacturing process of the plastic piece, although the hopper and the pipeline do not need to be cleaned frequently when the material or the color is changed, in the production and manufacturing process of the plastic piece, when the material or the color is changed, the feeding pipeline of the injection molding machine is required to be exchanged to another second branch pipeline of the plurality of second branch pipelines and communicated with the other second branch pipeline, the feeding pipeline of the raw material dryer is exchanged to another one of the first branch pipelines and communicated with the other one of the first branch pipelines as required, in addition, a raw material blending device of one variety in a raw material adding barrel can be conveniently introduced into a plurality of injection molding machines for production after being blended, however, the above-mentioned exchange operation and selection of raw materials are performed manually, and not automatically, so that the efficiency is low, and the material change error is easy to occur, which results in product rejection.

The utility model with the application number of CN201720707943.7 discloses a centralized feeding system of an injection molding machine, which comprises a control host, a raw material selecting frame, a power unit and a material containing hopper; the power unit is provided with a main air pipe, the main air pipe is connected with the injection molding machine through air distributing pipes, and air intercepting valves are arranged on the air distributing pipes; the charging hopper is provided with a hot air drying dehumidifier, the main air pipe is connected with the hot air drying dehumidifier through a branch air pipe, and the branch air pipe is connected with the main air pipe through a branch air device; the raw material selecting frame is provided with a plurality of feeding holes, and each feeding hole is connected with a discharging hole of the hot air drying dehumidifier through a material conveying pipe; the raw material selecting frame is provided with a plurality of distributing openings, each distributing opening is connected with a photoelectric suction hopper of each injection molding machine through a material distributing pipe, each material distributing pipe is provided with a material intercepting valve, the centralized feeding system adopts a vacuum conveying mode, plastic raw materials are conveyed from the material containing hopper to the hot air drying dehumidifier through the centralized pipeline system, and then the dried raw materials are conveyed to each injection molding machine. However, according to the utility model discloses an operation flow, this utility model is not automatic going on in the selection of dry dehumidifier to the photoelectric absorption hopper feed of injection molding machine, needs the manual preset, and automatic level still is relatively lower, also can appear the feed simultaneously and select the mistake, causes the product to scrap.

In the injection molding production of the automotive interior part, the automatic feeding system of the injection molding machine in the prior art comprises 4 drying material tanks and 4 injection molding machines, and when feeding materials to the injection molding machines, each drying material tank independently feeds the small material tank of each injection molding machine, namely, in the prior art, one drying material tank is adopted at a feeding station of the injection molding machine and corresponds to one injection molding machine, and each drying material tank feeds the small material tank of each injection molding machine, so that the problem is solved;

first, 4 the overall arrangement of a dry material jar and 4 injection molding machines is that every dry material jar installs the one side at every injection molding machine, 4 dry material jar and 4 injection molding machines are one row and arrange, every injection molding machine needs an operating personnel to operate, area is big, operating personnel is many, still be equipped with the feed supplement bucket by every dry material jar, whether need operating personnel to pay close attention to the starved charge constantly, need operating personnel to feed in to the feed supplement bucket when starved charge and guarantee not starved charge in the dry material jar, if the feed supplement is not timely, will influence the drying time of raw materials in dry material jar, and drying time is short excessively, then can influence the quality of product:

secondly, when the injection molding machine is used for replacing a mold and a tool clamp of an automotive interior part, whether a drying material tank needs to be replaced by a new material or not needs to be confirmed manually, if the drying material tank needs to be replaced by the new material, raw materials in the drying material tank need to be discharged completely, then the new raw materials are put in, and the new raw materials can be normally produced after being dried, so that the production efficiency is influenced;

thirdly, along with the improvement of the production rhythm and the increase of the mold changing frequency, the times of manual material changing are increased, the risk of the occurrence of manual material changing errors is increased, and once the material changing errors occur, all products are scrapped and the material changing is required again;

fourthly, because production is simplifying personnel constantly, the existing equipment only has a simple feeding function, and no acousto-optic character alarm prompt or material shortage prompt appears when material blockage occurs, so that problems are not timely treated, and the yield and the quality are influenced.

The invention with the application number of CN201610695357.5 discloses an automatic centralized feeding system for manufacturing automotive interior parts, which comprises at least six injection molding machines, wherein the injection molding machines are respectively connected to a central vacuum generator through stainless steel air pipes, the injection molding machines are provided with vacuum hoppers, the vacuum hoppers are connected to a storage barrel through stainless steel material pipes, the stainless steel material pipes are provided with dryers and diaphragm valves, and the materials dried by the dryers are fed to the vacuum hoppers through the PLC control of the opening and closing action of the diaphragm valves.

The invention simply utilizes the PLC to control automatic feeding, not only has convenient operation, but also has the advantage of large processing capacity, but the invention only simply introduces a rough content, has no clear and complete description on the content of the invention, also has no specific disclosure on a PLC control system, and has no function of automatically selecting and feeding.

Disclosure of Invention

The invention aims to solve the problems that the defects and defects in the prior art are overcome, the automatic selection feeding system of the injection molding machine for the automotive upholstery and the control system thereof are small in occupied area and few in operating personnel, automatic selection feeding is realized by installing ID coding plugs on a mold and a tool clamp, and the automatic selection feeding system has a fault warning function.

The technical scheme adopted by the automatic selection feeding system of the injection molding machine for the automotive interior trim parts comprises a first injection molding machine, a second injection molding machine, a third injection molding machine, a fourth injection molding machine, a first drying material tank, a second drying material tank, a third drying material tank, a fourth drying material tank, a first small material tank arranged at a feed inlet of the first injection molding machine, a second small material tank arranged at a feed inlet of the second injection molding machine, a third small material tank arranged at a feed inlet of the third injection molding machine and a fourth small material tank arranged at a feed inlet of the fourth injection molding machine, wherein a first drying material tank blanking valve is arranged at the bottom of the first drying material tank, a second drying material tank blanking valve is arranged at the bottom of the second drying material tank, a third drying material tank blanking valve is arranged at the bottom of the third drying material tank, a fourth drying material tank blanking valve is arranged at the bottom of the fourth drying material tank, the first drying material tank, the feed inlets of the second drying material tank, the third drying material tank and the fourth drying material tank are also connected with a storage tank through a material supplementing pipe, the lower end of a blanking valve of the first drying material tank is connected with a first drying material tank distributing valve through a hose, the lower end of a blanking valve of the second drying material tank is connected with a second drying material tank distributing valve through a hose, the lower end of a blanking valve of the third drying material tank is connected with a third drying material tank distributing valve through a hose, the lower end of a blanking valve of the fourth drying material tank is connected with a fourth drying material tank distributing valve through a hose, the first valve of the first drying material tank distributing valve, the first valve of the second drying material tank distributing valve, the first valve of the third drying material tank distributing valve and the first valve of the fourth drying material tank distributing valve are all connected with the first small material tank through a first feed pipeline, and the second valve of the first drying material tank, the second valve of the second drying material tank, the second valve of the, The third drying material tank distributing valve second valve and the fourth drying material tank distributing valve second valve are connected with a second small material tank through second feeding pipelines, the first drying material tank distributing valve third valve, the second drying material tank distributing valve third valve, the third drying material tank distributing valve third valve and the fourth drying material tank distributing valve third valve are connected with a third small material tank through third feeding pipelines, and the first drying material tank distributing valve fourth valve, the second drying material tank distributing valve fourth valve, the third drying material tank distributing valve fourth valve and the fourth drying material tank distributing valve fourth valve are connected with a fourth small material tank through fourth feeding pipelines; a first small material tank vacuum stop valve is installed at the upper end of the first small material tank, a second small material tank vacuum stop valve is installed at the upper end of the second small material tank, a third small material tank vacuum stop valve is installed at the upper end of the third small material tank, a fourth small material tank vacuum stop valve is installed at the upper end of the fourth small material tank, a first drying material tank vacuum stop valve is installed at the upper end of the first drying material tank, a second drying material tank vacuum stop valve is installed at the upper end of the second drying material tank, a third drying material tank vacuum stop valve is installed at the upper end of the third drying material tank, a fourth drying material tank vacuum stop valve is installed at the upper end of the fourth drying material tank, and the first small material tank vacuum stop valve, the second small material tank vacuum stop valve, the third small material tank vacuum stop valve, the fourth small material tank vacuum stop valve, the first drying material tank vacuum stop valve and the, The second drying material tank vacuum stop valve, the third drying material tank vacuum stop valve and the fourth drying material tank vacuum stop valve are respectively connected with a vacuum pipeline, one end of the vacuum pipeline is connected with the vacuum tank through a vacuum stop valve of the vacuum tank, an air outlet of the vacuum tank is connected with an air inlet of the vacuum fan, a first drying material tank starving switch is arranged on the first drying material tank, a second drying material tank starving switch is arranged on the second drying material tank, a third drying material tank starvation switch is arranged on the third drying material tank, a fourth drying material tank starvation switch is arranged on the fourth drying material tank, a first small charging bucket starving switch is arranged on the first small charging bucket, a second small charging bucket starving switch is arranged on the second small charging bucket, a third small charging bucket starving switch is installed on the third small charging bucket, and a fourth small charging bucket starving switch is installed on the fourth small charging bucket; the injection molding machine tool fixture comprises a first injection molding machine tool fixture, a second injection molding machine tool fixture, a third injection molding machine tool fixture, a fourth injection molding machine tool fixture and a mold mounting end, wherein a first injection molding machine mold ID coding plug and a first injection molding machine tool fixture ID coding plug are mounted at the mold mounting end of the first injection molding machine, a second injection molding machine mold ID coding plug and a second injection molding machine tool fixture ID coding plug are mounted at the mold mounting end of the second injection molding machine, a third injection molding machine mold ID coding plug and a third injection molding machine tool fixture ID coding plug are mounted at the mold mounting end of the third injection molding machine, and a fourth injection.

The control system comprises a PLC control system, a touch screen, a vacuum tank vacuum electromagnetic valve, a first small material tank vacuum electromagnetic valve, a second small material tank vacuum electromagnetic valve, a third small material tank vacuum electromagnetic valve, a fourth small material tank vacuum electromagnetic valve, a first drying material tank vacuum electromagnetic valve, a second drying material tank vacuum electromagnetic valve, a third drying material tank vacuum electromagnetic valve, a fourth drying material tank vacuum electromagnetic valve, a first drying material tank blanking electromagnetic valve, a second drying material tank blanking electromagnetic valve, a third drying material tank blanking electromagnetic valve, a fourth drying material tank blanking electromagnetic valve and a FESTO valve island, wherein the touch screen is in two-way connection with the PLC control system, and the first injection molding machine tool fixture ID coding plug, the second injection machine tool fixture ID coding plug and the FESTO valve island are connected, A second injection molding machine tool fixture ID coding plug, a third injection molding machine tool fixture ID coding plug, a fourth injection molding machine tool fixture ID coding plug and a fourth injection molding machine tool fixture ID coding plug are also connected with the PLC control system, and the FESTO valve island is respectively connected with a first drying material tank distributing valve first valve, a first drying material tank distributing valve second valve, a first drying material tank distributing valve third valve, a first drying material tank distributing valve fourth valve, a second drying material tank distributing valve first valve, a second drying material tank distributing valve second valve, a second drying material tank distributing valve third valve, a second drying material tank distributing valve fourth valve, a third drying material tank distributing valve first valve, a third drying material tank distributing valve second valve, a third drying material tank distributing valve fourth valve, a fourth drying material tank distributing valve first valve, a third drying material tank distributing valve fourth valve, A second valve of a material distributing valve of a fourth drying material tank, a third valve of a material distributing valve of the fourth drying material tank and a fourth valve of a material distributing valve of the fourth drying material tank are connected, the vacuum electromagnetic valve of the vacuum tank is connected with the vacuum stop valve, the vacuum electromagnetic valve of the first small material tank is connected with the vacuum stop valve of the first small material tank, the vacuum electromagnetic valve of the second small material tank is connected with the vacuum stop valve of the second small material tank, the vacuum electromagnetic valve of the third small material tank is connected with the vacuum stop valve of the third small material tank, the vacuum electromagnetic valve of the fourth small material tank is connected with the vacuum stop valve of the fourth small material tank, the vacuum electromagnetic valve of the first drying material tank is connected with the vacuum stop valve of the first drying material tank, the vacuum electromagnetic valve of the second drying material tank is connected with the vacuum stop valve of the second drying material tank, and the vacuum electromagnetic valve of, the fourth drying material tank vacuum solenoid valve is connected with a fourth drying material tank vacuum stop valve, the first drying material tank discharging solenoid valve is connected with the first drying material tank discharging valve, the second drying material tank discharging solenoid valve is connected with the second drying material tank discharging valve, the third drying material tank discharging solenoid valve is connected with the third drying material tank discharging valve, the fourth drying material tank discharging solenoid valve is connected with the fourth drying material tank discharging valve, the PLC control system is also connected with a first small material tank short-charge switch, a second small material tank short-charge switch, a third small material tank short-charge switch, a fourth small material tank short-charge switch, a first drying material tank short-charge switch, a second drying material tank short-charge switch, a third drying material tank short-charge switch, a fourth drying material tank short-charge switch and a vacuum fan respectively, and a first injection molding machine is arranged on the touch screen and whether needs a feeding button, Whether the second injection molding machine needs the material loading button, whether the third injection molding machine needs the material loading button, whether the fourth injection molding machine needs the material loading button, whether the first injection molding machine needs to clean the button for the first time, whether the second injection molding machine needs to clean the button for the first time, whether the third injection molding machine needs to clean the button for the first time, whether the first dry material jar needs the material loading button, whether the second dry material jar needs the material loading button, whether the third dry material jar needs the material loading button and whether the fourth dry material jar needs the material loading button, PLC control system still is connected with bee calling organ and warning light.

Corresponding control parameters can be set for the PLC control system in the touch screen, and comprise a polling interval parameter, an automatic vacuum fan closing delay parameter, a material requiring interval time parameter, a material shortage monitoring frequency parameter, a first small material tank first cleaning time parameter, a first small material tank feeding time parameter, a first small material tank cleaning time parameter, a second small material tank first cleaning time parameter, a second small material tank feeding time parameter and a second small material tank cleaning time parameter, the first cleaning time parameter of the third small material tank, the feeding time parameter of the third small material tank, the cleaning time parameter of the third small material tank, the first cleaning time parameter of the fourth small material tank, the feeding time parameter of the fourth small material tank, the cleaning time parameter of the fourth small material tank, the feeding time parameter of the first drying material tank, the feeding time parameter of the second drying material tank, the feeding time parameter of the third drying material tank and the feeding time parameter of the fourth drying material tank.

The operation flow of the control system of the automatic selection feeding system of the injection molding machine for the automotive interior parts is carried out according to the following steps:

when the operation is started, corresponding control parameters are set for the PLC control system in the touch screen, then the round inspection is started from 0 to 7,

when the round inspection is equal to 0, checking whether the ID code of the first injection molding machine mold and the ID code of the first injection molding machine tool fixture are identified and cleaning for the first time;

when checking whether the ID code of the first injection molding machine mold and the ID code of the first injection molding machine tool clamp are identified and cleaning is carried out for the first time, if the ID code of the first injection molding machine mold and the ID code of the first injection molding machine tool clamp are not identified, identifying whether the ID code of the first injection molding machine mold and the ID code of the first injection molding machine tool clamp are equal and not equal to 0; if the first injection molding machine mold ID code and the first injection molding machine tool clamp ID code have been identified, checking whether the first injection molding machine requires loading, i.e., checking whether a button selected in the touch screen for the first injection molding machine requiring loading is activated;

when the identification is carried out to judge whether the ID code of the first injection molding machine mold and the ID code of the first injection molding machine tool clamp are equal and not equal to 0, if the ID code of the first injection molding machine mold and the ID code of the first injection molding machine tool clamp are equal and not equal to 0, the mold is confirmed and the material in which the drying material tank is needed is selected, if the ID code of the first injection molding machine mold and the ID code of the first injection molding machine tool clamp are not equal or equal to 0, the first injection molding machine mold and the first injection molding machine tool clamp are not correctly installed or not installed, and at the moment, the feeding of the first small material tank is finished;

confirming a mould and selecting which drying material tank needs to be cleaned for the first time according to the ID code of the mould of the first injection machine and the ID code of a tool fixture of the first injection machine, and selecting the material in only one drying material tank of four drying material tanks;

when the first injection molding machine is checked to be cleaned for the first time, a button which is set in a touch screen and is used for checking whether the first injection molding machine needs to be cleaned for the first time is activated, if the first injection molding machine needs to be cleaned for the first time, a vacuum pump is started and a first feeding pipeline is cleaned, when the vacuum pump is started and the first feeding pipeline is cleaned, cleaning is carried out according to a first small material tank cleaning time parameter set in the touch screen, after cleaning, whether the first injection molding machine needs to be loaded is checked, and if the first injection molding machine does not need to be cleaned for the first time, whether the first injection molding machine needs to be loaded is checked;

when the first injection molding machine is checked to be in need of feeding, a button set in a touch screen is checked to be activated, if the first injection molding machine is checked to select to be fed, whether the first small charging bucket is short of the material is checked, and if the first injection molding machine is checked to be in need of feeding, feeding of the first small charging bucket is finished;

when checking whether the first small charging bucket is short of materials, if the first small charging bucket is lightened by the short of material switch, the vacuum pump is started to feed materials, and if the first small charging bucket is not lightened by the short of material switch, the first small charging bucket is finished if the first small charging bucket is not lightened by the short of materials;

when the vacuum pump is started and feeding is carried out, feeding is carried out according to a feeding time parameter of a first small charging bucket arranged in the touch screen, and a first feeding pipeline is cleaned after the feeding is finished;

when cleaning the first feeding pipeline, cleaning according to the cleaning time parameter of the first small material tank arranged in the touch screen, and finishing feeding of the first small material tank after cleaning.

When the first small charging bucket is finished to be charged, the system polling check is equal to 1;

when the round inspection is equal to 1, checking whether the ID code of the mold of the second injection molding machine and the ID code of the tool fixture of the second injection molding machine are identified and cleaning for the first time;

when checking whether the ID code of the second injection molding machine mold and the ID code of the second injection molding machine tool clamp are identified and cleaning is carried out for the first time, if the ID code of the second injection molding machine mold and the ID code of the second injection molding machine tool clamp are not identified, identifying whether the ID code of the second injection molding machine mold and the ID code of the second injection molding machine tool clamp are equal and not equal to 0; if the second injection molding machine mold ID code and the second injection molding machine tooling fixture ID code have been identified, checking whether the second injection molding machine requires loading, i.e., checking whether a button selected in the touch screen for the second injection molding machine requiring loading is activated;

when the ID codes of the second injection molding machine mold and the second injection molding machine tool clamp are identified to be equal and not equal to 0, if the ID codes of the second injection molding machine mold and the second injection molding machine tool clamp are equal and not equal to 0, confirming the mold and selecting which drying material tank needs to be filled with the material, if the ID code of the second injection molding machine mold and the ID code of the second injection molding machine tool clamp are not equal or equal to 0, determining that the second injection molding machine mold and the second injection molding machine tool clamp are not installed correctly or not installed, and finishing the feeding of the second small material tank;

confirming the mold and selecting which drying material tank needs to be cleaned for the first time according to the ID code of the mold of the second injection molding machine and the ID code of a tool fixture of the second injection molding machine, and selecting the material in only one drying material tank of the four drying material tanks;

when the second injection molding machine is checked to be cleaned for the first time, a button which is set in the touch screen and is used for checking whether the second injection molding machine needs to be cleaned for the first time is activated, if the second injection molding machine needs to be cleaned for the first time, the vacuum pump is started and the second feeding pipeline is cleaned, when the vacuum pump is started and the second feeding pipeline is cleaned, cleaning is carried out according to a first cleaning time parameter of a second small charging bucket which is set in the touch screen, after cleaning, whether the second injection molding machine needs to be loaded is checked, and if the second injection molding machine does not need to be cleaned for the first time, whether the second injection molding machine needs to be loaded is checked;

when the second injection molding machine is checked to be in need of feeding, a button set in the touch screen is checked to be activated, if the second injection molding machine is checked to select to be fed, whether the second small charging bucket is short of the material is checked, and if the second injection molding machine is checked to be in need of feeding, feeding of the second small charging bucket is finished;

when checking whether the second small charging bucket is short of materials, if the second small charging bucket is short of materials and the second small charging bucket is lightened, the vacuum pump is started to feed materials, and if the second small charging bucket is not lightened, the second small charging bucket is not short of materials and the feeding of the second small charging bucket is finished;

when the vacuum pump is started and feeding is carried out, feeding is carried out according to a feeding time parameter of a second small charging bucket arranged in the touch screen, and a second feeding pipeline is cleaned after the feeding is finished;

when cleaning the second feeding pipeline, cleaning according to the cleaning time parameter of the second small material tank arranged in the touch screen, and finishing feeding of the second small material tank after cleaning.

When the feeding of the second small charging bucket is finished, the system polling check is equal to 2;

when the round inspection is equal to 2, checking whether the mold ID code of the third injection molding machine and the tool fixture ID code of the third injection molding machine are identified and cleaning for the first time;

when checking whether the ID code of the mold of the third injection molding machine and the ID code of the tool clamp of the third injection molding machine are identified and cleaning is carried out for the first time, if the ID code of the mold of the third injection molding machine and the ID code of the tool clamp of the third injection molding machine are not identified, identifying whether the ID code of the mold of the third injection molding machine and the ID code of the tool clamp of the third injection molding machine are equal and are not equal to 0; if the third injection molding machine mold ID code and the third injection molding machine tool clamp ID code have been identified, checking whether the third injection molding machine requires loading, i.e., checking whether a button selected in the touch screen for the third injection molding machine requiring loading is activated;

when identifying whether the ID code of the mold of the third injection molding machine and the ID code of the tooling clamp of the third injection molding machine are equal and not equal to 0, if the ID code of the mold of the third injection molding machine and the ID code of the tooling clamp of the third injection molding machine are equal and not equal to 0, confirming the mold and selecting which drying material tank needs to be filled with the material, if the ID code of the mold of the third injection molding machine and the ID code of the tooling clamp are not equal or equal to 0, determining that the mold of the third injection molding machine and the tooling clamp of the third injection molding machine are not installed correctly or not installed, and finishing the feeding of a third small material tank at the;

confirming the mold and selecting which drying material tank needs to be cleaned for the first time according to the ID code of the mold of the third injection molding machine and the ID code of a tool fixture of the third injection molding machine, and selecting the material in only one drying material tank of the four drying material tanks;

when checking whether the third injection molding machine needs to be cleaned for the first time, namely, checking whether a button set in a touch screen and used for the third injection molding machine needs to be cleaned for the first time is activated, if the third injection molding machine needs to be cleaned for the first time, starting a vacuum pump and cleaning a third feeding pipeline, when starting the vacuum pump and cleaning the third feeding pipeline, cleaning according to a third small charging bucket first cleaning time parameter set in the touch screen, checking whether the third injection molding machine needs to be loaded after cleaning, and if the third injection molding machine does not need to be cleaned for the first time, checking whether the third injection molding machine needs to be loaded;

when checking whether the third injection molding machine needs to feed, namely checking whether a button set in the touch screen for the third injection molding machine needs to feed is activated, if checking that the third injection molding machine selects to feed, checking whether the third small charging bucket is short of the material, and if checking that the third injection molding machine does not need to feed, finishing feeding of the third small charging bucket;

when checking whether the third small charging bucket is short of materials, if the third small charging bucket is lightened by the short of material switch, the vacuum pump is started to feed materials, and if the third small charging bucket is not lightened by the short of material switch, the feeding of the third small charging bucket is finished;

when the vacuum pump is started and feeding is carried out, feeding is carried out according to a feeding time parameter of a third small charging bucket arranged in the touch screen, and a third feeding pipeline is cleaned after the feeding is finished;

when the third feeding pipeline is cleaned, cleaning is carried out according to the cleaning time parameter of the third small material tank arranged in the touch screen, and feeding of the third small material tank is finished after cleaning is finished.

When the feeding of the third small charging bucket is finished, the system polling check is equal to 3;

when the round inspection is equal to 3, checking whether the fourth injection molding machine mold ID code and the fourth injection molding machine tool fixture ID code are identified and cleaning for the first time;

when checking whether the fourth injection molding machine mold ID code and the fourth injection molding machine tool clamp ID code are identified and cleaning is carried out for the first time, if the fourth injection molding machine mold ID code and the fourth injection molding machine tool clamp ID code are not identified, identifying whether the fourth injection molding machine mold ID code and the fourth injection molding machine tool clamp and tool clamp ID code are equal and are not equal to 0; if the fourth injection molding machine mold ID code and the fourth injection molding machine tool fixture ID code have been identified, checking whether the fourth injection molding machine requires loading, i.e., checking whether a button selected in the touch screen for the fourth injection molding machine requiring loading is activated;

when identifying whether the ID code of the fourth injection molding machine mold and the ID code of the fourth injection molding machine tool clamp are equal and not equal to 0, if the ID code of the fourth injection molding machine mold and the ID code of the fourth injection molding machine tool clamp are equal and not equal to 0, confirming the mold and selecting which drying material tank needs to be filled with the material, if the ID code of the fourth injection molding machine mold and the ID code of the fourth injection molding machine tool clamp are not equal or equal to 0, determining that the fourth injection molding machine mold and the fourth injection molding machine tool clamp are not installed correctly or not, and finishing the feeding of a fourth small material tank;

confirming the mold and selecting which drying material tank needs to be cleaned for the first time according to the ID code of the mold of the fourth injection molding machine and the ID code of a tool fixture of the fourth injection molding machine, and selecting the material in only one drying material tank of the four drying material tanks;

when checking whether a fourth injection molding machine needs to be cleaned for the first time, namely, checking whether a button set in a touch screen and used for the fourth injection molding machine needs to be cleaned for the first time is activated, if the fourth injection molding machine needs to be cleaned for the first time, starting a vacuum pump and cleaning a fourth feeding pipeline, when starting the vacuum pump and cleaning the fourth feeding pipeline, cleaning according to a fourth small charging bucket first cleaning time parameter set in the touch screen, checking whether the fourth injection molding machine needs to be loaded after cleaning, and if the fourth injection molding machine does not need to be cleaned for the first time, checking whether the fourth injection molding machine needs to be loaded;

when the fourth injection molding machine is checked to be in need of feeding, a button set in the touch screen is checked to be activated, if the fourth injection molding machine is checked to select to be fed, whether the fourth small material tank is short of the material is checked, and if the fourth injection molding machine is checked to be in need of feeding, feeding of the fourth small material tank is finished;

when checking whether the fourth small charging bucket is short of materials, if the short-of-materials switch of the fourth small charging bucket is lightened, the vacuum pump is started to feed materials, and if the short-of-materials switch of the fourth small charging bucket is not lightened, the fourth small charging bucket is not lack of materials, and the feeding of the fourth small charging bucket is finished;

when the vacuum pump is started and feeding is carried out, feeding is carried out according to a feeding time parameter of a fourth small charging bucket arranged in the touch screen, and a fourth feeding pipeline is cleaned after the feeding is finished;

when cleaning the fourth feeding pipeline, cleaning according to the cleaning time parameter of the fourth small material tank arranged in the touch screen, and finishing feeding of the fourth small material tank after cleaning.

When the feeding of the fourth small charging bucket is finished, the system polling inspection is equal to 4;

when the polling check is equal to 4, checking whether the first drying material tank needs to be loaded, namely, checking whether a button set in the touch screen needs to be loaded is activated, if the first drying material tank is checked to select to be loaded, checking whether the first drying material tank is short of the material, and if the first drying material tank does not need to be loaded, finishing the loading of the first drying material tank;

when checking whether the first drying material tank is short of materials, if the first drying material tank is lightened by the short-of-materials switch, the vacuum pump is started to feed materials, and if the first drying material tank is not lightened by the short-of-materials switch, the first drying material tank is not lack of materials, and the feeding of the first drying material tank is finished;

when the vacuum pump is started and feeding is carried out, feeding is carried out according to a first drying material tank feeding time parameter set in the touch screen, and feeding of the first drying material tank is finished after the feeding is finished;

when the first drying material tank is finished feeding, the system polling check is equal to 5;

when the polling check is equal to 5, checking whether the second drying material tank needs to be loaded, namely, checking whether a button set in the touch screen needs to be loaded is activated, if the second drying material tank is checked to select to be loaded, checking whether the second drying material tank is short of the material, and if the second drying material tank does not need to be loaded, finishing the loading of the second drying material tank;

when checking whether the second drying material tank is short of materials, if the second drying material tank is lightened by the short-of-materials switch, the vacuum pump is started to feed materials, and if the second drying material tank is not lightened by the short-of-materials switch, the second drying material tank is not lack of materials, and the feeding of the second drying material tank is finished;

when the vacuum pump is started and the material is loaded, the material is loaded according to the material loading time parameter of the second drying material tank arranged in the touch screen, the material loading of the second drying material tank is finished after the material loading is finished,

when the feeding of the second drying material tank is finished, the system polling check is equal to 6;

when the polling check is equal to 6, checking whether the third drying material tank needs to be loaded, namely, checking whether a button set in the touch screen needs to be loaded is activated, if the third drying material tank is checked to select to be loaded, checking whether the third drying material tank is short of the material, and if the third drying material tank does not need to be loaded, finishing the loading of the third drying material tank;

when checking whether the third drying material tank is short of materials, if the third drying material tank is lightened by the short-of-materials switch, the vacuum pump is started to feed materials, and if the third drying material tank is not lightened by the short-of-materials switch, the third drying material tank is not lack of materials, and the feeding of the third drying material tank is finished;

when the vacuum pump is started and the material is loaded, the material is loaded according to the material loading time parameter of the third drying material tank arranged in the touch screen, the material loading of the third drying material tank is finished after the material loading is finished,

when the feeding of the third drying material tank is finished, the system polling check is equal to 7;

when the polling check is equal to 7, checking whether the fourth drying material tank needs to be loaded, namely, checking whether a button set in the touch screen needs to be loaded is activated, if the fourth drying material tank is checked to select to be loaded, checking whether the fourth drying material tank is short of the material, and if the fourth drying material tank does not need to be loaded, finishing the loading of the fourth drying material tank;

when checking whether the fourth drying material tank is short of materials, if the short-of-material switch of the fourth drying material tank is lightened, the vacuum pump is started to feed materials, and if the short-of-material switch of the fourth drying material tank is not lightened, the fourth drying material tank is not short of materials, and the fourth drying material tank is finished to feed materials;

when the vacuum pump is started and feeding is carried out, feeding is carried out according to a feeding time parameter of a fourth drying material tank arranged in the touch screen, and feeding of the fourth drying material tank is finished after the feeding is finished;

when the feeding of the fourth drying material tank is finished, the system polling check is equal to 0; and returning to the initial position.

The working principle of the invention is as follows: the PLC control system checks whether each injection molding machine and each drying material tank are short of materials and carries out feeding in a round-robin mode; the touch screen can select whether each injection molding machine needs to be cleaned and fed for the first time or not, and can also select whether a drying material tank needs to be fed or not, and can set the time length of cleaning, feeding and cleaning for the first time, ID codes are installed on a mold and a tool clamp of the injection molding machine, an ID code plug is connected when the mold and the tool clamp are replaced, a PLC control system identifies the mold ID code and the tool clamp ID code of each injection molding machine, confirms which product the mold and the tool clamp produce and which drying material tank needs to be selected, meanwhile, a filtering device and a starved sensor are installed on the drying material tank and the small material tank, the filtering device effectively prevents raw materials from being sucked into a vacuum pipeline, the starved sensor can detect whether the material is starved in the tank, and an alarm can be generated if the starved sensor still displays starved material during continuous feeding, the manufacturer is prompted that the charging of the charging bucket can be out of order.

Compared with the prior art, the invention has the beneficial effects that:

(1) the injection molding machine feeding system adopts 4 drying material tanks and 4 injection molding machines which are arranged in an up-down manner, so that the occupied area is reduced, a raw material area is completely separated from the injection molding machines, the operation space of the injection molding machines is enlarged, the operation of workers is safer, the feeding mode is flexible by adopting a material distributing valve of one-to-four drying material tanks and 4 feeding pipelines, one drying material tank can be used for multiple injection molding machines, and multiple drying material tanks can correspond to one injection molding machine, so that the manual operation is reduced, the labor intensity of workers is reduced, meanwhile, the material storage rack is intensively arranged and provided with a material level detection switch and a sound-light alarm device, the material supplementing operation of logistics feeding personnel can be reminded in time, and the number of times of manual observation;

(2) the control system of the feeding system of the injection molding machine is a control system which can realize automatic selection of raw materials by combining a PLC (programmable logic controller) control system, a touch screen, a mold ID coding plug and a tool clamp ID coding plug according to the placement condition of the injection molding machine and the condition that the injection molding machine frequently changes molds to switch the raw materials, and the control system can effectively prevent the injection molding machine from automatically selecting wrong raw materials by identifying and matching the mold ID coding and the tool clamp ID coding through the PLC control system, and timely prompt staff to have faults when a charging bucket is not full for multiple times, thereby realizing continuous production and monitoring functions, solving the problem of artificially switching the raw materials of the injection molding machine, improving the production efficiency and the product quality of products, and being safe and reliable in work;

(3) the PLC control system realizes that only one small charging bucket or one dry charging bucket is charged by using the vacuum fan at the same time by a polling inspection method, so that the power is sufficient and the charging speed is high;

(4) the mold and the tool clamp of the injection molding machine are provided with the ID codes, so that the mold and the tool of each product are provided with the identification codes, namely the ID code plugs which can be replaced quickly are arranged, the ID code plugs are inserted after the mold and the tool clamp are replaced and are transmitted to the control system, and the PLC control system identifies the mold ID codes and the tool clamp ID codes to determine the product to be produced at present and which raw material is used, so that the materials in the corresponding drying material tank are selected.

(5) The invention is an improvement of the prior art, taking injection trial production of automobile door panels as an example, before the improvement, the feeding mode is one-to-one, 4 vacuum fans with 1.8kw are used for secondary feeding and the vacuum fans are continuously started, the energy consumption of a single fan is 0.058kw, as the material in a small charging bucket and an injection molding machine needs to be emptied in each material changing process for 0.2h, and the material in a drying charging bucket needs to be emptied and new raw materials are filled and dried for 3h, the single material changing time needs 3.2h, and no feeding error prevention system is provided, after the improvement, the feeding mode is flexible, one can be four for four, namely one drying charging bucket corresponds to a plurality of injection molding machines, the feeding is carried out by using 1 fan with 4.3kw and the intermittent starting, the energy consumption of the single fan is 0.022, the energy consumption of the single fan is reduced by 0.036kw, because the material in each material changing process for emptying the small charging and the material in the charging bucket only needs 0.2h, the method has the advantages that the method is flexible in feeding mode, energy-saving, consumption-reducing, single-time material changing time saving and production efficiency improving, and the test data show that the method has the advantages of saving energy, reducing consumption, saving single-time material changing time and improving production efficiency.

Drawings

FIG. 1 is a schematic structural view of an automatic selection feeding system of an injection molding machine for automotive interior parts according to the present invention,

FIG. 2 is a block diagram of the control system of the automatic selection feeding system of the injection molding machine for automotive interior parts according to the present invention,

FIG. 3 is a flow chart of the operation of the control system of the automatic selection feeding system of the injection molding machine for automotive interior parts according to the present invention.

In the figure:

1-1, a first drying material tank, 1-2, a second drying material tank,

1-2 parts of a third drying material tank, 1-4 parts of a fourth drying material tank,

2-1, a first drying material tank discharging valve, 2-2, a second drying material tank discharging valve,

2-3, a third drying material tank discharging valve, 2-4, a fourth drying material tank discharging valve,

3-1, a first drying material tank distributing valve,

3-1-1, a first valve of a first drying material tank distributing valve, 3-1-2, a second valve of the first drying material tank distributing valve,

3-1-3, a third valve of the first drying material tank distributing valve, 3-1-4, a fourth valve of the first drying material tank distributing valve,

3-2, a material distributing valve of a second drying material tank,

3-2-1, a first valve of a material distributing valve of the second drying material tank, 3-2-2, a second valve of the material distributing valve of the second drying material tank,

3-2-3, a third valve of a distributing valve of the second drying material tank, 3-2-4, a fourth valve of the distributing valve of the second drying material tank,

3-3, a third drying material tank distributing valve,

3-3-1, a first valve of a material distributing valve of a third drying material tank, 3-3-2, a second valve of the material distributing valve of the third drying material tank,

3-3-3, a third valve of a third drying material tank distributing valve, 3-3-4, a fourth valve of the third drying material tank distributing valve,

3-4, a fourth drying material tank distributing valve,

3-4-1, a first valve of a material distributing valve of a fourth drying material tank, 3-4-2, a second valve of the material distributing valve of the fourth drying material tank,

3-4-3, a third valve of a material distributing valve of a fourth drying material tank, 3-4-4, a fourth valve of a material distributing valve of the fourth drying material tank,

4-1, a first small material tank, 4-2, a second small material tank,

4-3, a third small charging bucket, 4-4, a fourth small charging bucket,

5-1, a first injection molding machine, 5-2, a second injection molding machine,

5-3, a third injection molding machine, 5-4, a fourth injection molding machine,

6-1, a first small charging bucket vacuum stop valve, 6-2, a second small charging bucket vacuum stop valve,

6-3, a third small charging bucket vacuum stop valve, 6-4, a fourth small charging bucket vacuum stop valve,

6-5, 6-6, a first drying material tank vacuum stop valve, 6-6, a second drying material tank vacuum stop valve,

6 to 7, a third drying material tank vacuum stop valve, 6 to 8, a fourth drying material tank vacuum stop valve,

6-9, a vacuum stop valve of the vacuum tank,

7. a vacuum pipeline is arranged on the upper portion of the vacuum pipeline,

8-1 vacuum tank, 8-2 vacuum blower,

9-1, a first drying material tank starvation switch, 9-2, a second drying material tank starvation switch,

9-3, a third drying material tank starvation switch, 9-4, a fourth drying material tank starvation switch,

10-1, a first small charging bucket starvation switch, 10-2, a second small charging bucket starvation switch,

10-3, a third small charging bucket starvation switch, 10-4, a fourth small charging bucket starvation switch,

11. a first feed line, 12, a second feed line,

13. a third feed line, 14, a fourth feed line,

15-1. a first injection molding machine mold ID code plug,

15-2. a second injection molding machine mold ID coding plug,

15-3. a third injection molding machine mold ID coding plug,

15-4. a fourth injection molding machine mold ID coding plug,

16-1, a first injection molding machine tool holder ID code plug,

16-2. a second injection molding machine tool clamp ID code plug,

16-3. a third injection molding machine tool clamp ID code plug,

16-4, a fourth injection molding machine clamps the ID coding plug,

17. a material supplementing pipe is arranged on the bottom of the material supplementing pipe,

18. a material storage tank,

19. a touch screen, 20. a PLC control system,

21. a buzzer 22, a warning light,

FESTO valve island, 24 vacuum canister vacuum solenoid valve,

25. a first small charging bucket vacuum electromagnetic valve, 26, a second small charging bucket vacuum electromagnetic valve,

27. a third small charging bucket vacuum electromagnetic valve, 28, a fourth small charging bucket vacuum electromagnetic valve,

29. a first drying material tank vacuum electromagnetic valve, 30, a second drying material tank vacuum electromagnetic valve,

31. a third drying material tank vacuum electromagnetic valve, 32, a fourth drying material tank vacuum electromagnetic valve,

33. a first drying material tank discharging electromagnetic valve, 34, a second drying material tank discharging electromagnetic valve,

35. a third drying material tank discharging electromagnetic valve, 36. a fourth drying material tank discharging electromagnetic valve.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

Detailed description of the preferred embodiment 1

As shown in figure 1, the automatic selective feeding system of the injection molding machine for automotive upholsteries comprises a first drying material tank 1-1, a second drying material tank 1-2, a third drying material tank 1-3 and a fourth drying material tank 1-4, wherein a first drying material tank blanking valve 2-1 is installed at the bottom of the first drying material tank 1-1, a second drying material tank blanking valve 2-2 is installed at the bottom of the second drying material tank 1-2, a third drying material tank blanking valve 2-3 is installed at the bottom of the third drying material tank 1-3, a fourth drying material tank blanking valve 2-4 is installed at the bottom of the fourth drying material tank 1-4, the lower end of the first drying material tank blanking valve 2-1 is connected with a first drying material tank distributing valve 3-1 through a hose, the lower end of the second drying material tank discharging valve 2-2 is connected with a second drying material tank distributing valve 3-2 through a hose, the lower end of the third drying material tank discharging valve 2-3 is connected with a third drying material tank distributing valve 3-3 through a hose, the lower end of the fourth drying material tank discharging valve 2-4 is connected with a fourth drying material tank distributing valve 3-4 through a hose, and the first drying material tank distributing valve 3-1, the second drying material tank distributing valve 3-2, the third drying material tank distributing valve 3-3 and the fourth drying material tank distributing valve 3-4 are all four distributing valves; the first drying material tank distributing valve 3-1 is provided with a first drying material tank distributing valve first valve 3-1-1, a first drying material tank distributing valve second valve 3-1-2, a first drying material tank distributing valve third valve 3-1-3 and a first drying material tank distributing valve fourth valve 3-1-4; the second drying material tank distributing valve 3-2 is provided with a first drying material tank distributing valve 3-2-1, a second drying material tank distributing valve second valve 3-2-2, a second drying material tank distributing valve third valve 3-2-3 and a second drying material tank distributing valve fourth valve 3-2-4; the third drying material tank distributing valve 3-3 is provided with a third drying material tank distributing valve first valve 3-3-1, a third drying material tank distributing valve second valve 3-3-2, a third drying material tank distributing valve third valve 3-3-3 and a third drying material tank distributing valve fourth valve 3-3-4; the fourth drying material tank distributing valve 3-4 is provided with a fourth drying material tank distributing valve first valve 3-4-1, a fourth drying material tank distributing valve second valve 3-4-2, a fourth drying material tank distributing valve third valve 3-4-3 and a fourth drying material tank distributing valve fourth valve 3-4-4; the first valve 3-1-1 of the first drying material tank distributing valve, the first valve 3-2-1 of the second drying material tank distributing valve, the first valve 3-3-1 of the third drying material tank distributing valve and the first valve 3-4-1 of the fourth drying material tank distributing valve are connected with the first small material tank 4-1 through a first feeding pipeline 11; the first dry charging bucket distributing valve second valve 3-1-2, the second dry charging bucket distributing valve second valve 3-2-2, the third dry charging bucket distributing valve second valve 3-3-2 and the fourth dry charging bucket distributing valve second valve 3-4-2 are connected with the second small charging bucket 4-2 through a second feeding pipeline 12, the first dry charging bucket distributing valve third valve 3-1-3, the second dry charging bucket distributing valve third valve 3-2-3, the third dry charging bucket distributing valve third valve 3-3-3 and the fourth dry charging bucket distributing valve third valve 3-4-3 are connected with the third small charging bucket 4-3 through a third feeding pipeline 13, and the first dry charging bucket distributing valve fourth valve 3-1-4, the second dry charging bucket distributing valve fourth valve 3-2-4, The fourth valve 3-3-4 of the distributing valve of the third drying material tank and the fourth valve 3-4-4 of the distributing valve of the fourth drying material tank are connected with the fourth small material tank 4-4 through a fourth feeding pipeline 14;

the first small charging bucket 4-1 is installed at a feed inlet of a first injection molding machine 5-1, the second small charging bucket 4-2 is installed at a feed inlet of a second injection molding machine 5-2, the third small charging bucket 4-3 is installed at a feed inlet of a third injection molding machine 5-3, the fourth small charging bucket 4-4 is installed at a feed inlet of a fourth injection molding machine 5-4, a first small charging bucket vacuum stop valve 6-1 is installed at the upper end of the first small charging bucket 4-1, a second small charging bucket vacuum stop valve 6-2 is installed at the upper end of the second small charging bucket 4-2, a third small charging bucket vacuum stop valve 6-3 is installed at the upper end of the third small charging bucket 4-3, and a fourth small charging bucket vacuum stop valve 6-4 is installed at the upper end of the fourth small charging bucket 4-4, first dry material jar vacuum stop valve 6-5 is installed to first dry material jar 1-1's upper end second dry material jar vacuum stop valve 6-6 is installed to second dry material jar 1-2's upper end third dry material jar vacuum stop valve 6-7 is installed to third dry material jar 1-3's upper end fourth dry material jar vacuum stop valve 6-8 is installed to fourth dry material jar 1-4's upper end, first little material jar vacuum stop valve 6-1, second little material jar vacuum stop valve 6-2, third little material jar vacuum stop valve 6-3, fourth little material jar vacuum stop valve 6-4, first dry material jar vacuum stop valve 6-5, second dry material jar vacuum stop valve 6-6, third dry material jar vacuum stop valve 6-7 and fourth dry material jar vacuum stop valve 6-8 respectively with vacuum pipeline 7 One end of a vacuum pipeline 7 is connected with a vacuum tank 8-1 through a vacuum stop valve 6-9 of the vacuum tank, an air outlet of the vacuum tank 8-1 is connected with an air inlet of a vacuum fan 8-2, a first drying material tank starvation switch 9-1 is installed on the first drying material tank 1-1, a second drying material tank starvation switch 9-2 is installed on the second drying material tank 1-2, a third drying material tank starvation switch 9-3 is installed on the third drying material tank 1-3, a fourth drying material tank starvation switch 9-4 is installed on the fourth drying material tank 1-4, a first small starvation switch 10-1 is installed on the first small material tank 4-1, a second small material tank starvation switch 10-2 is installed on the second small material tank 4-2, a third small material tank short-cut switch 10-3 is arranged on the third small material tank 4-3, and a fourth small material tank short-cut switch 10-4 is arranged on the fourth small material tank 4-4;

a first injection molding machine mold ID coding plug 15-1 and a first injection molding machine tool clamp ID coding plug 16-1 are installed at the mold installation end of the first injection molding machine 5-1, a second injection molding machine mold ID coding plug 15-2 and a second injection molding machine tool clamp ID coding plug 16-2 are installed at the mold installation end of the second injection molding machine 5-2, a third injection molding machine mold ID coding plug 15-3 and a third injection molding machine tool clamp ID coding plug 16-3 are installed at the mold installation end of the third injection molding machine 5-3, a fourth injection molding machine mold ID coding plug 15-4 and a fourth injection molding machine tool clamp ID coding plug 16-4 are installed at the mold installation end of the fourth injection molding machine 5-4, the first injection molding machine mold ID coding plug 15-1, the first injection molding machine tool clamp ID coding plug 16-1, the second injection molding machine tool clamp ID, A second injection molding machine mold ID coding plug 15-2, a third injection molding machine mold ID coding plug 15-3, a fourth injection molding machine mold ID coding plug 15-4, a first injection molding machine tool clamp ID coding plug 16-1, a second injection molding machine tool clamp ID coding plug 16-2, a third injection molding machine tool clamp ID coding plug 16-3 and a fourth injection molding machine tool clamp ID coding plug 16-4 are all in a binary coding mode and are connected with the PLC control system 20 through flexible cables, the PLC control system 20 carries out comparison and identification once on the ID codes, identification is not carried out any more in the production process, material selection errors caused by problems of loosening and disconnection of the ID coding plugs can be avoided, the mold and the tool clamp are replaced when the mold ID codes and the tool clamp ID codes are zero, and then the PLC control system 20 carries out comparison and identification once again, the method can not cause wrong feeding, and the feed inlets of the first drying material tank 1-1, the second drying material tank 1-2, the third drying material tank 1-3 and the fourth drying material tank 1-4 are respectively connected with a storage tank 18 through a material supplementing pipe 17.

The storage tanks 18 may also be replaced by storage bags mounted on a storage rack.

As shown in figure 1, 4 drying material tanks and 4 injection molding machines of the automatic feeding system of the automotive upholstery injection molding machine are arranged in an upper row and a lower row, so that the floor area of equipment is reduced and a larger space is provided for logistics in a workshop through the optimized arrangement.

Detailed description of the preferred embodiment 2

As shown in FIG. 2, the control system of the automatic selective feeding system of the injection molding machine for automotive upholsteries of the present invention comprises a PLC control system 20, a touch screen 19 bidirectionally connected with the PLC control system 20, a vacuum pot vacuum solenoid valve 24, a first small bucket vacuum solenoid valve 25, a second small bucket vacuum solenoid valve 26, a third small bucket vacuum solenoid valve 27, a fourth small bucket vacuum solenoid valve 28, a first drying bucket vacuum solenoid valve 29, a second drying bucket vacuum solenoid valve 30, a third drying bucket vacuum solenoid valve 31, a fourth drying bucket vacuum solenoid valve 32, a first drying bucket discharging solenoid valve 33, a second drying bucket discharging solenoid valve 34, a third drying bucket discharging solenoid valve 35 and a fourth drying bucket discharging solenoid valve 36 connected with the PLC control system, and a buzzer 21, a warning light 22 and a FESTO valve island 23 connected with the PLC control system, A first injection molding machine mold ID coding plug 15-1, a first injection molding machine tool clamp ID coding plug 16-1, a second injection molding machine mold ID coding plug 15-2, a second injection molding machine tool clamp ID coding plug 16-2, a third injection molding machine mold ID coding plug 15-3, a third injection molding machine tool clamp ID coding plug 16-3, a fourth injection molding machine mold ID coding plug 15-4 and a fourth injection molding machine tool clamp ID coding plug 16-4, wherein the FESTO valve island 23 is respectively connected with a first drying material tank distributing valve first valve 3-1-1, a first drying material tank distributing valve second valve 3-1-2, a first drying material tank distributing valve third valve 3-1-3, a first drying material tank distributing valve fourth valve 3-1-4, a second drying material tank distributing valve first valve 3-2-1, A second drying material tank distributing valve second valve 3-2-2, a second drying material tank distributing valve third valve 3-2-3, a second drying material tank distributing valve fourth valve 3-2-4, a third drying material tank distributing valve first valve 3-3-1, a third drying material tank distributing valve second valve 3-3-2, a third drying material tank distributing valve third valve 3-3-3, a third drying material tank distributing valve fourth valve 3-3-4, a fourth drying material tank distributing valve first valve 3-4-1, a fourth drying material tank distributing valve second valve 3-4-2, a fourth drying material tank distributing valve third valve 3-4-3, a fourth drying material tank distributing valve fourth valve 3-4-4 are connected, the vacuum tank vacuum electromagnetic valve 24 is connected with a vacuum stop valve 6-9, the first small charging bucket vacuum electromagnetic valve 25 is connected with a first small charging bucket vacuum stop valve 6-1, the second small charging bucket vacuum electromagnetic valve 26 is connected with a second small charging bucket vacuum stop valve 6-2, the third small charging bucket vacuum electromagnetic valve 27 is connected with a third small charging bucket vacuum stop valve 6-3, the fourth small charging bucket vacuum electromagnetic valve 28 is connected with a fourth small charging bucket vacuum stop valve 6-4, the first drying charging bucket vacuum electromagnetic valve 29 is connected with a first drying charging bucket vacuum stop valve 6-5, the second drying charging bucket vacuum electromagnetic valve 30 is connected with a second drying charging bucket vacuum stop valve 6-6, the third drying charging bucket vacuum electromagnetic valve 31 is connected with a third drying charging bucket vacuum stop valve 6-7, the fourth drying charging bucket vacuum electromagnetic valve 32 is connected with a fourth drying charging bucket vacuum stop valve 6-8, the first drying charging bucket blanking electromagnetic valve 33 is connected with a first drying charging bucket blanking valve 2-1, the second drying material tank discharging electromagnetic valve 34 is connected with the second drying material tank discharging valve 2-2, the third drying material tank discharging electromagnetic valve 35 is connected with the third drying material tank discharging valve 2-3, the fourth drying material tank discharging electromagnetic valve 36 is connected with the fourth drying material tank discharging valve 2-4, the PLC control system 20 is further connected with the first small material tank short-circuit switch 10-1, the second small material tank short-circuit switch 10-2, the third small material tank short-circuit switch 10-3, the fourth small material tank short-circuit switch 10-4, the first drying material tank short-circuit switch 9-1, the second drying material tank short-circuit switch 9-2, the third drying material tank short-circuit switch 9-3, the fourth drying material tank short-circuit switch 9-4 and the vacuum fan 8-2 respectively;

corresponding control parameters can be set for the PLC control system 20 in the touch screen 19, including a polling interval parameter, an automatic vacuum fan closing delay parameter, a query charging interval time parameter, an starved monitoring frequency parameter, a first small charging bucket first cleaning time parameter, a first small charging bucket feeding time parameter, a first small charging bucket cleaning time parameter, a second small charging bucket first cleaning time parameter, a second small charging bucket feeding time parameter, a second small charging bucket cleaning time parameter, a third small charging bucket first cleaning time parameter, a third small charging bucket feeding time parameter, a third small charging bucket cleaning time parameter, a fourth small charging bucket first cleaning time parameter, a fourth small charging bucket feeding time parameter, a fourth small charging bucket cleaning time parameter, a first drying charging bucket feeding time parameter, a second drying charging bucket feeding time parameter, a third drying charging bucket feeding time parameter and a fourth drying charging bucket feeding time parameter, whether a first injection molding machine needs a feeding button or not, whether a second injection molding machine needs a feeding button or not, whether a third injection molding machine needs a feeding button or not, whether a fourth injection molding machine needs a feeding button or not, whether the first injection molding machine needs a first cleaning button or not, whether the second injection molding machine needs a first cleaning button or not, whether the third injection molding machine needs a first cleaning button or not, whether a fourth injection molding machine needs a first cleaning button or not, whether a first drying material tank needs a feeding button or not, whether a second drying material tank needs a feeding button or not, whether a third drying material tank needs a feeding button or not, and whether a fourth drying material tank needs a feeding button or not are further arranged on the touch screen 19;

data among PLC control system 20 can show in touch-sensitive screen 19, including round number data of patrolling, first injection molding machine mould ID coded data, first injection molding machine frock clamp ID coded data, first small charging bucket selects dry material jar number data, second injection molding machine mould ID coded data, second injection molding machine frock clamp ID coded data, second small charging bucket selects dry material jar number data, third injection molding machine mould ID coded data, third injection molding machine frock clamp ID coded data, third small charging bucket selects dry material jar number data, fourth injection molding machine mould ID coded data, fourth injection molding machine frock clamp ID coded data, fourth small charging bucket selects dry material jar number data.

Detailed description of preferred embodiments 3

The operation flow of the control system of the automatic selection feeding system of the injection molding machine for the automotive interior parts is carried out according to the steps shown in figure 3, wherein the figure 3 comprises 4 mutually connected attached drawings:

when the identification is carried out to judge whether the ID code of the first injection molding machine mold and the ID code of the first injection molding machine tool clamp are equal and not equal to 0, if the ID code of the first injection molding machine mold and the ID code of the first injection molding machine tool clamp are equal and not equal to 0, the mold is confirmed and the material in which the drying material tank is needed is selected, if the ID code of the first injection molding machine mold and the ID code of the tool clamp are not equal or equal to 0, the first injection molding machine mold and the first injection molding machine tool clamp are not installed correctly, and at the moment, the feeding of the first small material tank is finished;

when the mould is confirmed and the required material in which drying material tank is selected, the mould is selected according to the ID code of the mould of the first injection machine and the ID code of the tool fixture of the first injection machine, and only the material in one drying material tank of the four drying material tanks is selected, and whether the first injection machine needs to be cleaned for the first time is checked after the material of any drying material tank is selected;

when the identification is carried out to judge whether the ID code of the mold of the second injection molding machine and the ID code of the tool fixture of the second injection molding machine are equal and not equal to 0, if the ID code of the mold of the second injection molding machine and the ID code of the tool fixture of the second injection molding machine are equal and not equal to 0, the mold is confirmed and the material in which the drying material tank is needed is selected, if the ID code of the mold of the second injection molding machine and the ID code of the tool fixture of the second injection molding machine are not equal or equal to 0, the mold of the second injection molding machine and the tool fixture are not correctly installed or not installed, and at the moment;

when the mold is confirmed and the required material in which drying material tank is selected, the mold is selected according to the ID code of the mold of the second injection molding machine and the ID code of the tool fixture of the second injection molding machine, and only the material in one drying material tank of the four drying material tanks is selected, and whether the second injection molding machine needs to be cleaned for the first time or not is checked after the material of any drying material tank is selected;

when the second injection molding machine is checked to be cleaned for the first time, a button which is set in the touch screen and used for checking whether the second injection molding machine needs to be cleaned for the first time is activated, if the second injection molding machine needs to be cleaned for the first time, the vacuum pump is started and the second feeding pipeline is cleaned, when the vacuum pump is started and the second feeding pipeline is cleaned, cleaning is carried out according to a first cleaning time parameter of a second small charging bucket arranged in the touch screen, after cleaning, whether the second injection molding machine needs to be loaded is checked, and if the second injection molding machine does not need to be cleaned for the first time, whether the second injection molding machine needs to be loaded is checked;

when checking whether the ID code of the mold of the third injection molding machine and the ID code of the tool clamp of the third injection molding machine are identified and cleaning is carried out for the first time, if the ID code of the mold of the third injection molding machine and the ID code of the tool clamp of the third injection molding machine are not identified, identifying whether the ID code of the mold of the third injection molding machine and the ID code of the tool clamp of the third injection molding machine are equal and not equal to 0; if the third injection molding machine mold ID coded data and the third injection molding machine tool clamp ID coded data are identified, checking whether the third injection molding machine needs to be loaded, namely checking whether a button which is selected in the touch screen and needs to be loaded is activated;

when identifying whether the ID code of the mold of the third injection molding machine and the ID code of the tool clamp of the third injection molding machine are equal and not equal to 0, if the ID code of the mold of the third injection molding machine and the ID code of the tool clamp of the third injection molding machine are equal and not equal to 0, confirming the mold and selecting which drying material tank needs to be filled with the material, if the ID code of the mold of the third injection molding machine and the ID code of the tool clamp of the third injection molding machine are not equal or equal to 0, determining that the mold of the third injection molding machine and the tool clamp of the third injection molding machine are not correctly installed or not installed, and finishing the feeding of the;

when the mould is confirmed and the required material in which drying material tank is selected, the mould is selected according to the ID code of the mould of the third injection machine and the ID code of the tool fixture of the third injection machine, and only the material in one drying material tank of the four drying material tanks is selected, and whether the material of the third injection machine needs to be cleaned for the first time or not is checked after the material of any drying material tank is selected;

when identifying whether the ID code of the fourth injection molding machine mold and the ID code of the fourth injection molding machine tool clamp are equal and not equal to 0, if the ID code of the fourth injection molding machine mold and the ID code of the fourth injection molding machine tool clamp are equal and not equal to 0, confirming the mold and selecting which drying material tank needs to be filled with the material, if the ID code of the fourth injection molding machine mold and the ID code of the tool clamp are not equal or equal to 0, determining that the fourth injection molding machine mold and the fourth injection molding machine tool clamp are not installed correctly or not, and finishing the feeding of a fourth small material tank;

when the mould is confirmed and the required material in which drying material tank is selected, the mould is selected according to the ID code of the mould of the fourth injection machine and the ID code of the tool fixture of the fourth injection machine, and only the material in one drying material tank of the four drying material tanks is selected, and whether the fourth injection machine needs to be cleaned for the first time or not is checked after the material of any drying material tank is selected;

when the feeding of the fourth dry material tank is finished, the system polling check is equal to 0; and returning to the initial position.

Claims

1. An automatic selection feeding system of an injection molding machine for automotive interior parts comprises a first injection molding machine (5-1), a second injection molding machine (5-2), a third injection molding machine (5-3), a fourth injection molding machine (5-4), a first drying material tank (1-1), a second drying material tank (1-2), a third drying material tank (1-3), a fourth drying material tank (1-4), a first small material tank (4-1) arranged at a feed port of the first injection molding machine (5-1), a second small material tank (4-2) arranged at a feed port of the second injection molding machine (5-2), a third small material tank (4-3) arranged at a feed port of the third injection molding machine (5-3) and a fourth small material tank (4-4) arranged at a feed port of the fourth injection molding machine (5-4), the drying system is characterized in that a first drying material tank blanking valve (2-1) is arranged at the bottom of a first drying material tank (1-1), a second drying material tank blanking valve (2-2) is arranged at the bottom of a second drying material tank (1-2), a third drying material tank blanking valve (2-3) is arranged at the bottom of a third drying material tank (1-3), a fourth drying material tank blanking valve (2-4) is arranged at the bottom of a fourth drying material tank (1-4), feed inlets of the first drying material tank (1-1), the second drying material tank (1-2), the third drying material tank (1-3) and the fourth drying material tank (1-4) are connected with a material storage tank (18) through a material supplementing pipe (17), and the drying system is characterized in that a first drying material tank distributing valve (3-1) is connected at the lower end of the first drying material tank blanking valve (2-1) through a hose, the lower end of the second dry material tank blanking valve (2-2) is connected with a second dry material tank distributing valve (3-2) through a hose, the lower end of the third dry material tank blanking valve (2-3) is connected with a third dry material tank distributing valve (3-3) through a hose, the lower end of the fourth dry material tank blanking valve (2-4) is connected with a fourth dry material tank distributing valve (3-4) through a hose, the first dry material tank distributing valve first valve (3-1-1), the second dry material tank distributing valve first valve (3-2-1), the third dry material tank distributing valve first valve (3-3-1) and the fourth dry material tank distributing valve first valve (3-4-1) are connected with the first small material tank (4-1) through a first feeding pipeline (11), the second valve (3-1-2) of the first drying material tank distributing valve, the second valve (3-2-2) of the second drying material tank distributing valve, the second valve (3-3-2) of the third drying material tank distributing valve and the second valve (3-4-2) of the fourth drying material tank distributing valve are connected with the second small material tank (4-2) through a second feeding pipeline (12), the third valve (3-1-3) of the first drying material tank distributing valve, the third valve (3-2-3) of the second drying material tank distributing valve, the third valve (3-3-3) of the third drying material tank distributing valve and the third valve (3-4-3) of the fourth drying material tank distributing valve are connected with the third small material tank (4-3) through a third feeding pipeline (13), and the fourth valve (3-1-4) of the first drying material tank distributing valve, A fourth valve (3-2-4) of a distributing valve of the second drying material tank, a fourth valve (3-3-4) of a distributing valve of the third drying material tank and a fourth valve (3-4-4) of a distributing valve of the fourth drying material tank are connected with a fourth small material tank (4-4) through a fourth feeding pipeline (14); a first small charging bucket vacuum stop valve (6-1) is installed at the upper end of the first small charging bucket (4-1), a second small charging bucket vacuum stop valve (6-2) is installed at the upper end of the second small charging bucket (4-2), a third small charging bucket vacuum stop valve (6-3) is installed at the upper end of the third small charging bucket (4-3), a fourth small charging bucket vacuum stop valve (6-4) is installed at the upper end of the fourth small charging bucket (4-4), a first drying charging bucket vacuum stop valve (6-5) is installed at the upper end of the first drying charging bucket (1-1), a second drying charging bucket vacuum stop valve (6-6) is installed at the upper end of the second drying charging bucket (1-2), and a third drying charging bucket vacuum stop valve (6-7) is installed at the upper end of the third drying charging bucket (1-3), a fourth dry material tank vacuum stop valve (6-8) is arranged at the upper end of a fourth dry material tank (1-4), the first small material tank vacuum stop valve (6-1), the second small material tank vacuum stop valve (6-2), the third small material tank vacuum stop valve (6-3), the fourth small material tank vacuum stop valve (6-4), the first dry material tank vacuum stop valve (6-5), the second dry material tank vacuum stop valve (6-6), the third dry material tank vacuum stop valve (6-7) and the fourth dry material tank vacuum stop valve (6-8) are respectively connected with a vacuum pipeline (7), one end of the vacuum pipeline (7) is connected with the vacuum tank (8-1) through the vacuum tank vacuum stop valve (6-9), the air outlet of the vacuum tank (8-1) is connected with the air inlet of a vacuum fan (8-2), install first dry material jar starved switch (9-1) on first dry material jar (1-1), install second dry material jar starved switch (9-2) on second dry material jar (1-2), install third dry material jar starved switch (9-3) on third dry material jar (1-3), install fourth dry material jar starved switch (9-4) on fourth dry material jar (1-4), install first little material jar starved switch (10-1) on first little material jar (4-1), install second little material jar starved switch (10-2) on second little material jar (4-2), install third little material jar starved switch (10-3) on third little material jar (4-3), a fourth small material shortage switch (10-4) is arranged on the fourth small material tank (4-4); a first injection molding machine mould ID coding plug (15-1) and a first injection molding machine tool clamp ID coding plug (16-1) are arranged at the mould mounting end of the first injection molding machine (5-1), a second injection molding machine mould ID coding plug (15-2) and a second injection molding machine tool clamp ID coding plug (16-2) are arranged at the mould mounting end of the second injection molding machine (5-2), a third injection molding machine mould ID coding plug (15-3) and a third injection molding machine tool clamp ID coding plug (16-3) are arranged at the mould mounting end of the third injection molding machine (5-3), and a fourth injection molding machine mold ID coding plug (15-4) and a fourth injection molding machine tool clamp ID coding plug (16-4) are installed at the mold installation end of the fourth injection molding machine (5-4).

2. The control system of the automatic selective feeding system of the injection molding machine for automotive upholsteries according to claim 1, comprising a PLC control system (20), a touch screen (19) connected with the PLC control system (20) in two directions, a vacuum solenoid valve (24) of the vacuum tank, a vacuum solenoid valve (25) of the first small material tank, a vacuum solenoid valve (26) of the second small material tank, a vacuum solenoid valve (27) of the third small material tank, a vacuum solenoid valve (28) of the fourth small material tank, a vacuum solenoid valve (29) of the first dry material tank, a vacuum solenoid valve (30) of the second dry material tank, a vacuum solenoid valve (31) of the third dry material tank, a vacuum solenoid valve (32) of the fourth dry material tank, a discharge solenoid valve (33) of the first dry material tank, a discharge solenoid valve (34) of the second dry material tank, a discharge solenoid valve (35) of the third dry material tank, a discharge solenoid valve (36) of the, the first injection molding machine tool fixture ID coding plug (15-1), the first injection molding machine tool fixture ID coding plug (16-1), the second injection molding machine tool fixture ID coding plug (15-2), the second injection molding machine tool fixture ID coding plug (16-2), the third injection molding machine tool fixture ID coding plug (15-3), the third injection molding machine tool fixture ID coding plug (16-3), the fourth injection molding machine tool fixture ID coding plug (15-4) and the fourth injection molding machine tool fixture ID coding plug (16-4) are also connected with a PLC control system (20), and the FESTO valve island (23) is respectively connected with the first drying material tank distributing valve first valve (3-1-1), the first drying material tank distributing valve second valve (3-1-2), the first drying material tank distributing valve third valve (3-1-3), A fourth valve (3-1-4) of a first dry material tank distributing valve, a first valve (3-2-1) of a second dry material tank distributing valve, a second valve (3-2-2) of a second dry material tank distributing valve, a third valve (3-2-3) of a second dry material tank distributing valve, a fourth valve (3-2-4) of a second dry material tank distributing valve, a first valve (3-3-1) of a third dry material tank distributing valve, a second valve (3-3-2) of a third dry material tank distributing valve, a third valve (3-3-3), a fourth valve (3-3-4) of a third dry material tank distributing valve, a first valve (3-4-1) of a fourth dry material tank distributing valve, a second valve (3-4-2) of a fourth dry material tank distributing valve, A fourth dry charging bucket distributing valve, a third valve (3-4-3) and a fourth dry charging bucket distributing valve, a fourth valve (3-4-4) are connected, a vacuum electromagnetic valve (24) of the vacuum tank is connected with the vacuum stop valve (6-9), a first small charging bucket vacuum electromagnetic valve (25) is connected with the first small charging bucket vacuum stop valve (6-1), a second small charging bucket vacuum electromagnetic valve (26) is connected with the second small charging bucket vacuum stop valve (6-2), a third small charging bucket vacuum electromagnetic valve (27) is connected with the third small charging bucket vacuum stop valve (6-3), a fourth small charging bucket vacuum electromagnetic valve (28) is connected with the fourth small charging bucket vacuum stop valve (6-4), and a first dry charging bucket vacuum electromagnetic valve (29) is connected with the first dry charging bucket vacuum stop valve (6-5), the second dry material tank vacuum electromagnetic valve (30) is connected with the second dry material tank vacuum stop valve (6-6), the third dry material tank vacuum electromagnetic valve (31) is connected with the third dry material tank vacuum stop valve (6-7), the fourth dry material tank vacuum electromagnetic valve (32) is connected with the fourth dry material tank vacuum stop valve (6-8), the first dry material tank blanking electromagnetic valve (33) is connected with the first dry material tank blanking valve (2-1), the second dry material tank blanking electromagnetic valve (34) is connected with the second dry material tank blanking valve (2-2), the third dry material tank blanking electromagnetic valve (35) is connected with the third dry material tank blanking valve (2-3), the fourth dry material tank blanking electromagnetic valve (36) is connected with the fourth dry material tank blanking valve (2-4), the PLC control system (20) is further connected with a first small charging bucket short-charge switch (10-1), a second small charging bucket short-charge switch (10-2), a third small charging bucket short-charge switch (10-3), a fourth small charging bucket short-charge switch (10-4), a first drying charging bucket short-charge switch (9-1), a second drying charging bucket short-charge switch (9-2), a third drying charging bucket short-charge switch (9-3), a fourth drying charging bucket short-charge switch (9-4) and a vacuum fan (8-2) respectively, and a touch screen (19) is provided with a first injection molding machine whether a feeding button is needed, a second injection machine whether a feeding button is needed, a third injection machine whether a feeding button is needed, a fourth injection machine whether a feeding button is needed, a first injection machine whether a button is needed, a second injection machine whether a first cleaning button is needed, Whether the third injection molding machine needs to clean the button for the first time, whether the fourth injection molding machine needs to clean the button for the first time, whether first dry material jar needs the material loading button, whether second dry material jar needs the material loading button, whether third dry material jar needs the material loading button and whether fourth dry material jar needs the material loading button, PLC control system (20) still is connected with bee calling organ (21) and warning light (22).

3. The control system according to claim 2, wherein the touch panel (19) is configured to set corresponding control parameters for the PLC control system (20), the control parameters include polling interval parameter, auto-off vacuum fan delay parameter, query request interval time parameter, shortage monitoring time parameter, first canister first cleaning time parameter, first canister loading time parameter, first canister cleaning time parameter, second canister first cleaning time parameter, second canister loading time parameter, second canister cleaning time parameter, third canister first cleaning time parameter, third canister loading time parameter, third canister cleaning time parameter, fourth canister first cleaning time parameter, fourth canister loading time parameter, fourth canister cleaning time parameter, and the like, The feeding time parameter of the first drying material tank, the feeding time parameter of the second drying material tank, the feeding time parameter of the third drying material tank and the feeding time parameter of the fourth drying material tank.

4. The operation flow of the control system of the automatic selection feeding system of the injection molding machine for automotive upholsteries according to claim 2 or 3 is performed according to the following steps:

when the ID codes of the first injection molding machine mold and the first injection molding machine tool clamp are identified to be equal and not equal to 0, if the ID codes of the first injection molding machine mold and the first injection molding machine tool clamp are equal and not equal to 0, confirming the mold and selecting which drying material tank needs to be filled with the material, if the ID codes of the first injection molding machine mold and the first injection molding machine tool clamp are not equal or equal to 0, determining that the first injection molding machine mold and the first injection molding machine tool clamp are not installed correctly or not installed, and finishing the feeding of the first small material tank;

5. The process of claim 4, wherein when the first canister is finished, the system polling check is equal to 1;

when the ID codes of the second injection molding machine mold and the second injection molding machine tool clamp are identified to be equal and not equal to 0, if the ID codes of the second injection molding machine mold and the second injection molding machine tool clamp are equal and not equal to 0, confirming the mold and selecting which drying material tank needs to be filled with the material, if the ID codes of the second injection molding machine mold and the second injection molding machine tool clamp are not equal or equal to 0, determining that the second injection molding machine mold and the second injection molding machine tool clamp are not installed correctly or installed, and finishing the feeding of the second small material tank;

6. The process of claim 5, wherein the system polling check is equal to 2 when the second canister is finished;

when checking whether the ID code of the mold of the third injection molding machine and the ID code of the tool clamp of the third injection molding machine are identified and cleaning is carried out for the first time, if the ID code of the mold of the third injection molding machine and the ID code of the tool clamp of the third injection molding machine are not identified, identifying whether the ID code of the mold of the third injection molding machine and the ID code of the tool clamp of the third injection molding machine are equal and not equal to 0; if the third injection molding machine mold ID code and the third injection molding machine tool clamp ID code have been identified, checking whether the third injection molding machine requires loading, i.e., checking whether a button selected in the touch screen for the third injection molding machine requiring loading is activated;

when identifying whether the ID code of the mold of the third injection molding machine and the ID code of the tooling clamp of the third injection molding machine are equal and not equal to 0, if the ID code of the mold of the third injection molding machine and the ID code of the tooling clamp of the third injection molding machine are equal and not equal to 0, confirming the mold and selecting which drying material tank needs to be filled with the material, if the ID code of the mold of the third injection molding machine and the ID code of the tooling clamp of the third injection molding machine are not equal or equal to 0, determining that the mold of the third injection molding machine and the tooling clamp of the third injection molding machine are not correctly installed or not installed, and at the moment, finishing the feeding of;

when checking whether a third injection molding machine needs to be cleaned for the first time, namely, checking whether a button set in a touch screen and used for the third injection molding machine needs to be cleaned for the first time is activated, if the third injection molding machine needs to be cleaned for the first time, starting a vacuum pump and cleaning a third feeding pipeline, when starting the vacuum pump and cleaning the third feeding pipeline, cleaning according to a third small charging bucket first cleaning time parameter set in the touch screen, checking whether the third injection molding machine needs to be loaded after cleaning, and if the third injection molding machine does not need to be cleaned for the first time, checking whether the third injection molding machine needs to be loaded;

7. The process of claim 6, wherein the system polling check is equal to 3 when the third bucket is finished;

when checking whether the fourth injection molding machine mold ID code and the fourth injection molding machine tool clamp ID code are identified and cleaning is carried out for the first time, if the fourth injection molding machine mold ID code and the fourth injection molding machine tool clamp ID code are not identified, identifying whether the fourth injection molding machine mold ID code and the fourth injection molding machine tool clamp ID code are equal and not equal to 0; if the fourth injection molding machine mold ID code and the fourth injection molding machine tool fixture ID code have been identified, checking whether the fourth injection molding machine requires loading, i.e., checking whether a button selected in the touch screen for the fourth injection molding machine requiring loading is activated;

8. The process of claim 7, wherein the system polling check is equal to 4 when the fourth canister is finished;