Mould clamping mechanism of crank connecting rod
A technology of mold clamping mechanism and connecting rod structure, which is applied in the field of toggle linkage mold clamping mechanism, can solve the problems of reduced tail plate life, low strength, low stiffness, tail plate wear, etc., to improve machining accuracy, simplify assembly process, Life-enhancing effect
Active Publication Date: 2011-08-10
宁波海雄塑料机械有限公司
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Problems solved by technology
[0005] Due to the relative rotation between the large pin in the tail plate of the injection molding machine and the tail plate in the current double toggle five-hinge connecting rod mold clamping mechanism, it is easy to cause the wear of the tail plate and reduce the life of the tail plate; and the connecting rod The front connecting rod in the structure is a plurality of independent rods, so its strength and stiffness are low
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[0019] The present invention will be further described in detail below with reference to the embodiments of the accompanying drawings.
[0020] like Figure 1~5 Shown is what should be the preferred embodiment of the invention.
[0021] A toggle link mold clamping mechanism, comprising a tail plate 1, a movable template 2, and a pair of toggle link structures arranged between the tail plate 1 and the movable template 2 to drive the movable template 2 to move relative to the tail plate 1, The tail plate 1 is fixed on the frame of the injection molding machine, and four pull rods 12 are fixed on the tail plate 1. The other ends of the four pull rods 12 are fixed on the head plate 13, and the movable template 2 is sleeved on the four parts of the frame. The root pull rod 12 can slide up and down along the pull rod 12 .
[0022] The front link 3 is an integral piece, the front end of the front link 3 has two front lugs 31 hinged with the rear end surface of the movable template ...
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The invention relates to a mould clamping mechanism of a crank connecting rod, comprising a tail plate, a movable template and a pair of crank connecting rod structures, wherein each crank connecting rod structure also comprises a front connecting rod, a back connecting rod, a small connecting rod and a push seat. The front end of the front connecting rod is hinged with the back end face of the movable template, the back end of the front connecting rod is hinged with the front end of the back connecting rod, the back end of the back connecting rod is hinged with the front end face of the tailplate, one end of the small connecting rod is hinged with the middle part of the back connecting rod, the other end is hinged with one side of the push seat, and the push seat is spaced between the tail plate and the movable template and can move back and forth. The mould clamping mechanism of the crank connecting rod is characterized in that the front connecting rod is an integral component, thefront end of the front connecting rod is provided with two front projecting lugs which are hinged with the back end face of the movable template, and the back end of the front connecting rod is provided with three back projecting lugs which are hinged with the back connecting rod. The mould clamping mechanism of the crank connecting rod has the advantages that the movable template and the tail plate have simple structure and long service life.
Description
technical field [0001] The invention relates to a mold clamping mechanism in an injection molding machine, in particular to a toggle link mold clamping mechanism. Background technique [0002] The traditional clamping mechanism of the injection molding machine uses a clamping cylinder to complete the whole process of opening and clamping. In order to obtain a larger clamping force, it needs to use a clamping cylinder with a large flow rate, so the weight of the clamping cylinder is heavy. It is difficult to dismantle and repair, and because the large-flow clamping cylinder has a large cylinder diameter, the clamping cylinder is easy to wear after long-term use, resulting in leakage of the cylinder and poor durability. Moreover, the speed of driving the large-flow clamping cylinder is relatively slow. It is difficult to achieve fast mold opening and mold locking. [0003] In view of the aforementioned situation, in recent years, the design and manufacture of injection moldin...
Claims
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IPC IPC(8): B29C45/68
Inventor 张卫东郑强丁世前
Owner 宁波海雄塑料机械有限公司