Thermoset plastic compression molding machine

Thermocouple Specified for Plastic Molding Machines

1.EMT/T graduation:K,E,J,T2.Mounting jack:screws, bayonet caps with compressed spring, movable nut with buffing
spring,and connecting lugs

Precision preformer is a kind of high-efficiency and high-precision device for manufacturing rubber blank. It can be used in combination with a wide range of rubber material in extruding rubber blank of mid to high hardness and of intricate shapes such as circle and solid figures. Owing to its high precision volume and low air content, it is capable of producing products ranging from rubber sundries, sealing members, inflating valves, tennis balls and shoe soles.

 Structure introduction
    The precision preformer is composed of a ram extruder and a rubber blank cutter attached to the ram head. It is also equipped with hydraulic, vacuum, heating, pneumatic and electrical system. While in operation, the first step is to open the ram head and add the preheated prehensile rubber material into the machine from anterior part of the barrel. After that, the ram head is to be closed to adjust the extruding and cutting speed (volume control chart is provided with the machine). Eventually, after vacuumization and cutting, the rubber blank with precise weight will then be obtained.
    1. Extruding device: It is composed of hydraulic cylinder, batching barrel and ram head.
    2. Hydraulic device: This device is selected with high-pressure gear pump and YUKEN flow valve imported from Japan. Hydraulic oil in hydraulic cylinder is controlled by the flow valve and the pressure difference prior to and after throttling is controlled at a constant value so as to ensure the precise weight of the rubber blank extruded. This device is equipped with cooling system driven by 2 sets of hydraulic axletrees which can make reasonable and effective use of energy and control the temperature of the hydraulic oil.
    3. Pneumatic device: It is used to open and close the ram head as well as control the movements of other devices, for example, the cylinder.
    4. Vacuumizing system: Before extruding and cutting of rubber material, the vacuumization aims at eliminating the air remained inside the barrel and the ram head as well as the gas contained in the rubber material so as to improve the quality of sulfur products to be produced in the following process.
    5. Heating system: With the adoption of water circulation heating method, the temperature is controlled and displayed by the digital thermostat which can effectively maintain the constant temperature of the ram head and the barrel.
    6. Cutting device: It is composed of frame, electromotor and deceleration system, which can conduct speed transmission via four-speed motor gearbox and frequency conversion motor. In addition, there is also a transmission system installed under the frame.

Technical Parameter

Thermoset plastic compression molding machine

XZB series transfer type molding machine for rubber (semiautomatic rubber injection molding machine) is our companys original R&D results and has a number of national patents (Patent No.ZL 03230397.3 ZL200420110566.1 and ZL200620105181.5). It is an advanced rubber pressure molding equipment with compact structure, wide applicability and high degree of automation, especially, it is suitable for producing rubber model products with metallic insert, complex shape, big cross-section and thick-wall., these products process is complex and more difficult to form. Among them the multi-purpose rubber transfer type molding machine (semiautomatic rubber injection molding machine) based on the frequency conversion technology was established as National Science and Technology Ministry innovation fund project of technology type medium and small enterprises.

Features:

   Clamping cylinder clamps mould first, then injection cylinder press rubber material into mould cavity uniformly. Therefore the rubber parts have precision dimension, uniform and stable performances.
   It uses the original imported high pressure pump, and middle and high pressure vane pump combination, controlled by proportional pressure & flow composite valve, hydraulic system configuration is advanced, reasonable and reliable with low noise and low energy consumption.
   The main moving platen raises rapidly, clamps slowly, declines rapidly, so the  efficiency is improved and the mould is protected
   It uses automatic in-out mould and ejector mechanism, reduces labor intensity and avoids the artificial damage to mould
   The hydraulic cylinder uses patent technology of oil cylinder composite sealing device (Patent No.ZL03220060.3)which is with independent intellectual property rights, with reliable seal and long service life
   The oil tank adopts the patent technology of turn board structure open tank(Patent No.ZL200620105181.5), it saves time and effort for maintenance , more human-friendly.
   The electric system adopts full computer control, it is convenient for operation. It has two working modes of point moving and semi automation. Users can choose PLC control and 5.7-inch touch-control screen imported from Siemens or Mitsubishi
   Preparing material is simple, fast. Production efficiency is high.