According to the arrangement of injection device and clamping device, injection molding machine can be divided into vertical injection molding machine, horizontal injection molding machine and vertical horizontal compound injection molding machine. Today, I will mainly explain the operation between the two models mentioned above, that is, horizontal injection molding machine and vertical injection molding machine
Vertical injection molding machine is a mechanical equipment. It is usually composed of injection system, clamping system, hydraulic transmission system, electrical control system, lubrication system, heating and cooling system, safety monitoring system, etc.
Injection system is one of the most important parts of injection molding machine, generally there are three main forms: plunger type, screw type, screw pre plastic plunger injection type. At present, the most widely used is screw type. Its function is that in a cycle of the injection molding machine, a certain amount of plastic can be heated and plasticized within a specified time, and then the molten plastic can be injected into the mold cavity through a screw under a certain pressure and speed.
Horizontal injection molding machine: This is the most common type. The mold closing part and the injection part are on the same horizontal center line, and the mold is opened along the horizontal direction. Its features are: low fuselage, easy to operate and maintain; low center of gravity of the machine, stable installation; products can be automatically dropped by gravity after ejection, easy to realize full-automatic operation. The disadvantages are: the installation of the die is troublesome, the insert has been published, if the die has the possibility of tilting or falling down, the machine occupies a large area. This type of injection molding machine is widely used in the market
pre-start preparation, check the lubrication part is fully lubricated. Check the pump for abnormal noise. Carefully install the fastening die, pay attention to the upper and lower die to ensure safety, adjust the pressure of each section, set the temperature of each section
Manual operation and Adjustment Manual operation to adjust the position of the switch, and to ensure the safety of the die. The Electronic Control Panel manual button set to ON (open) , the machine manual operation, the electronic control panel ON the action button only when the button to press (ON) can have action, release when the action disappeared. Sentence is too long, please supply a shorter sentence. Produce A high-voltage mode-lock when touching a switch block for high-voltage access to a model. Block: Adjust the mold alignment mold when used, that is to control the use of fuel nozzle cylinder table forward. INJECTION: according to the material, shape and size of the product, adjust the injection pressure, keep the injection time and position, press the injection button to make the injection. (Note: Do not feed until the temperature reaches the set point) screw feed: Press the feed button, the screw rotation material is stirred mixing compression screw is thus raised (the speed of rise is determined by the back pressure control valve adjustment) , when the screw rise to touch the feed close to the switch block, feeding action stopped, feeding stroke size depends on the amount of injection glue required. UNPLUG: 1) shoot off when the unplug button is pressed and the screw moves up. 2) when half-started, the loosening action is mainly to pull the screw up a distance (the distance is determined by the loosening time) after the automatic feeding. The purpose of this action is to prevent the rubber from expanding due to the compression and thermal shrinkage of the feeding material from spilling out at the opening of the feeding barrel (the funnel) , blocking the pouring channel of the mould and preventing the rubber from being injected into the feeding hole again. EJECTION: press the top ; button, the product is ejected, semi-automatic time before and after the ejection can be adjusted to determine the ejection height. PUSH BACK: press the push down button, the thimble is automatically back to the original position, do automatically when the top retreat time can be adjusted to determine the stop time thimble. Thimble Count: semi-automatic setting thimble count to determine the number of ejector count. Seki: turn off the switch on the control panel, and always clean the supplies on your machine.
start to check the power before opening the power first check the power cord, confirm whether the hydraulic oil is sufficient and check the safety door close switch is out of order, safety door switch is smooth. To install the mold, you must manually close the safety door with the fixed circle on the fixed plate, switch the mold to install the mold adjustment, carry out the Seki Mold. Adjust the mold to make the center of the shooting mouth up and down, right and left, and then fix the mold on the fixing plate. Adjust thimble stroke and speed, thimble stroke overruns may damage the mold. So in the beginning, you have to make it shorter. Adjusting a security device for a visa card. Adjusting a security device for a visa card.
Molding operation, manual operation will select the operation switch switch switch to the manual position, and then press the pump start button. The safety door on the left side of the drill must also be closed. Switch the mold to switch to Seki Mode , then the Seki mode action starts, and the high voltage completes. EJECTOR switch to forward , nozzle contact complete. Injection device switch switch to injection , then the injection action, pressure from the injection (a) pressure into the secondary pressure. Note: start the screw drive motor 15 minutes after the temperature of the heating cylinder reaches the set temperature to avoid damage to the screw. Measure the holding time of pressure. Switch the screw to switch to the rotation position, the measurement. The ejector switch is switched to reverse the ejector to the proper position. After measuring the cooling time, switch the mold to open mode . Press the push-out switch to measure the push-out of finished product.
Molding operation, automatic operation first from manual operation, so that molding conditions stable, then automatically into molding operation. Before entering the automatic operation, set each timer, to automatic operation molding, the operation of the selection switch will be converted to semi-automatic to confirm the safety around, the safety door closed. When a mold turns off, it switches from a low-voltage model to a high-voltage model on a trip to Sekiya. The party closing pressure rises after confirmation, shooting the device forward. After the nozzle contact is completed, the injection is started. When the injection time timer is counted, the injection and pressure holding are carried out. As soon as the injection timer reached its set time, the cooling and metering of the injection began. The screw rotates while backing away. Once the projectile is out of contact with the on-off switch, the thrust mechanism retracts. When the cooling time timer reaches the time, the pressure in the closed die cylinder will drop and the die will be opened. When a close switch contact is stopped, the open-mode action stops. Then carry out the ejection action, this time the finished product by the thimble ejection, fall to the finished product fall on the board. When off-board is used, it can be detected and the next cycle begins. In the operation of machinery, to emergency stop, immediately under the operating disk or anti-operating disk side of them after the emergency stop. .
When stopping the machine from forming resin which can easily undergo thermal decomposition, first stop supplying the material and injecting all the resin into the injection cylinder to prevent the resin from remaining in the injection cylinder and causing thermal decomposition. At this point in the next mold operation, the resin cylinder temperature must be careful, because sometimes MELTON resin will be scattered. Please turn off the power supply and clean the machine when the job is over and the job is stopped to ensure safety and protect the electrical device.
