Driving device for injection molding machine and injection molding system thereof

Abstract

The invention provides a driving device for an injection molding machine and an injection molding system thereof. The driving device comprises a mounting plate, wherein a first ejector rod is movably arranged in a first mounting groove; a second ejector rod is movably arranged in a second mounting groove; a second cleaning brush is fixedly arranged in a second through hole; a lead screw is fixedly arranged at the output end of a driving motor; a nut is movably arranged on the lead screw; connecting rods are symmetrically and fixedly arranged on one side, far away from the driving motor, of the nut; the connecting rods are fixed on a base plate; an oil cylinder is fixedly arranged on one side, close to the nut, of the base plate; a driving rod is fixedly arranged at the output end of the oil cylinder; and an elastic clamping piece is arranged on the driving rod. According to the driving device for the injection molding machine and the injection molding system thereof, the first ejector rod or the second ejector rod at different positions can be ejected out in an oil cylinder driving mode or a lead screw nut driving mode, multiple driving modes can be realized through mutual combination, the structure is simple, and a user can flexibly select the driving device according to different working conditions.

Description

technical field [0001] The invention relates to the technical field of injection molding machines, in particular to a driving device for an injection molding machine and an injection molding system thereof. Background technique [0002] In the production process of injection molded parts, the injection molded parts must be taken out of the mold cavity. Generally, ejector pins and ejector pins are used to eject the molded plastic parts. However, the existing ejector pin driving device is single and the degree of precision is low. The ejection distance is too large and the plastic parts are damaged, so it needs to be improved. [0003] In the prior art, an ejection mechanism of an injection molding machine with the application number "201810559691.7" relates to the technical field of injection molding machines, including a movable plate, an ejection drive mechanism and a ejector rod assembly. The ejection drive mechanism consists of an ejection cylinder and a The driving guid...

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Problems solved by technology

[0004] However, there are still relatively obvious defects in its use: 1. When the above-mentioned device is in use, the ejector rod at the fixed position will be fully ejected, but in some injection molding products, when the ejector rod is driven out of the position When it overlaps with the inner hole position of the convex column of the injection molded product, the ejector pin will be inserted into the inner hole of the injection molded product. At this time, the rise of the ejector pin will not cause the demoulding effect, making it difficult for the injection molded product to be ejected from the mold. Generally, it is necessary to modify the position of the boss on the injection molded product, but changing the position of the boss may affect the strength of the entire product, causing product deformation, or it is cumbersome to perform molding operations on the inner hole of the boss at a later stage; 2. The above-mentioned device uses an oil cylinder to drive the ejector rod. Although the displacement caused by the oil cylinder drive changes quickly, the precision of the stroke is low, and it is not suitable for demoulding drive of injection molded products that require refinement.

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