Oil hydraulic circuit for synchronously controlling mould locking oil cylinder and mould transferring oil cylinder of injection molding machine
A technology of oil cylinder and mold shifting, which is applied in the field of hydraulic circuits and can solve problems such as inability to realize synchronous actions
Active Publication Date: 2015-04-01
佛山市宝捷精密机械有限公司
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Problems solved by technology
[0002] At present, the oil inlet of the clamping cylinder and the oil inlet of the mold-moving cylinder of the existing injection molding machine are respectively connected to two oil pumps of a double pump through a reversing valve, and the mold-locking cylinder and the mold-moving cylinder operate independently. Unable to achieve synchronous action
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[0009] In the following, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments, so as to understand more clearly the technical idea claimed in the present invention.
[0010] Such as figure 1 The injection molding machine mold locking cylinder and the mold shifting cylinder of the present invention shown in the present invention synchronously control the hydraulic circuit, including the mold locking cylinder C, the electro-hydraulic reversing valve V6, the mold shifting cylinder D, the superimposed one-way throttle valve V20, and the electromagnetic reversing valve V8 , logic one-way valve V3, reversing valve V2, direct-acting relief valve V4 and electro-hydraulic proportional pilot relief valve V5, wherein the oil inlet C1 of the clamping cylinder C is connected to that of the electro-hydraulic reversing valve V6 The first working oil port A is connected, and its oil return port C2 is connected with the second w...
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The invention discloses an oil hydraulic circuit for synchronously controlling a mould locking oil cylinder and a mould transferring oil cylinder of an injection molding machine. The oil hydraulic circuit comprises the mould locking oil cylinder C, an electro-hydraulic directional control valve V6, the mould transferring oil cylinder D, a stacked unidirectional throttle valve V20, an electromagnetic directional valve V8, a logic one-way valve V3, a reversing valve V2, a direct-acting overflow valve V4 and a pilot type electric-hydraulic proportional overflow valve V5, wherein the oil inlet P of the electro-hydraulic directional control valve V6 is connected with the oil inlet end of a hydraulic oil path, an oil return opening T of the electro-hydraulic directional control valve V6 is connected with the oil inlet P of the electromagnetic directional valve V8, the oil return opening T of the electromagnetic directional valve V8 is connected with an oil tank, two main oil path interfaces of the logic one-way valve V3 are respectively connected with the oil return opening T of the electro-hydraulic directional control valve V6 and the oil tank, the control oil path interface of the logic one-way valve V3 is connected with the reversing valve V2, and the oil return opening T of the reversing valve V2 is connected with the oil tank; and the oil inlets of the direct-acting overflow valve V4 and the pilot type electric-hydraulic proportional overflow valve V5 are connected with a working oil opening of the reversing valve V2, and the oil outlets thereof are connected with the oil tank. The oil hydraulic circuit disclosed by the invention can be used for achieving synchronization action of the mould locking oil cylinder and the mould transferring oil cylinder.
Description
technical field [0001] The invention relates to the technical field of injection molding machines, in particular to a hydraulic circuit for controlling the synchronous action of a clamping oil cylinder and a mold moving oil cylinder of an injection molding machine. Background technique [0002] At present, the oil inlet of the clamping cylinder and the oil inlet of the mold-moving cylinder of the existing injection molding machine are respectively connected to two oil pumps of a double pump through a reversing valve, and the mold-locking cylinder and the mold-moving cylinder operate independently. Unable to achieve synchronous action. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention aims to provide a synchronous control hydraulic circuit for the mold locking cylinder and the mold moving cylinder of an injection molding machine capable of controlling the synchronous action of the mold clamping cylinder and the mold moving...
Claims
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IPC IPC(8): B29C45/67
CPCB29C45/67B29C45/82
Inventor 磨斌国邓文谦杨伟杰
Owner 佛山市宝捷精密机械有限公司