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Synchronous ejector pin mechanism of injection mold

A technology of injection molds and thimbles, which is applied in the field of synchronous thimble mechanisms, can solve the problems of plastic products with marks, damage, and uneven force on plastic products, and achieve the effect of avoiding marks or damage and uniform force

Inactive Publication Date: 2021-03-09
刘前文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The thimble mechanism is a mechanism for pushing the formed plastic product away from the mold. The thimble mechanism is generally equipped with multiple thimbles, and each thimble is driven to move by a telescopic device such as an air cylinder or an oil cylinder; but because each thimble is driven by a different telescopic device, The thimble cannot act on the plastic product at the same time. When the plastic product is ejected, the force is uneven, resulting in marks or damage on the plastic product

Method used

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  • Synchronous ejector pin mechanism of injection mold
  • Synchronous ejector pin mechanism of injection mold
  • Synchronous ejector pin mechanism of injection mold

Examples

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Embodiment Construction

[0019] Examples such as Figure 1-3 As shown, a synchronous thimble mechanism of an injection mold includes a fixed mold 1 and a movable mold 2 arranged on the left and right. The convex module 21, the plastic product is molded in the cavity 100 formed by the convex module 21 and the concave mold cavity 11;

[0020] A drive cavity 12, a plurality of thimble holes 13 connecting the drive cavity 12 and the die cavity 11 are formed in the fixed mold 1;

[0021] The drive cavity 12 is provided with a plurality of thimble mechanisms 3 and a drive mechanism 4 that drives the plurality of thimble mechanisms 3 to work simultaneously;

[0022] The thimble mechanism 3 includes a thimble 31 inserted in the thimble hole 13, the left end of the thimble 31 is fixedly connected with a movable rack 32, the movable rack 32 is meshed with a gear 33, the gear 33 is meshed with a fixed rack 34, and the fixed tooth The bar 34 is fixedly connected with the driving cavity 12; the gear 33 is fixed ...

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Abstract

The invention discloses a synchronous ejector pin mechanism of an injection mold. The synchronous ejector pin mechanism of the injection mold comprises a fixed mold and a movable mold which are arranged left and right, a female mold cavity with an opening in the right side is formed in the fixed mold, a male mold block protruding leftwards is formed on the movable mold, and a plastic product is formed in a cavity formed by the male mold block and the female mold cavity; a driving cavity and a plurality of ejector pin holes for communicating the driving cavity with the female die cavity are formed in the fixed die; and a plurality of ejector pin mechanisms and a driving mechanism for driving the ejector pin mechanisms to work simultaneously are arranged in the driving cavity. Multiple ejector pins are driven by the same driving mechanism to synchronously move, so that the ejector pins are uniformly stressed on the plastic product, and the plastic product is effectively prevented from generating marks or being damaged.

Description

technical field [0001] The invention relates to the technical field of injection molds, in particular to a synchronous thimble mechanism of an injection mold. Background technique [0002] The thimble mechanism is a mechanism for pushing the formed plastic product away from the mold. The thimble mechanism is generally equipped with multiple thimbles, and each thimble is driven to move by a telescopic device such as an air cylinder or an oil cylinder; but because each thimble is driven by a different telescopic device, The thimble cannot act on the plastic product at the same time. When the plastic product is ejected, the force is uneven, resulting in marks or damage to the plastic product. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a synchronous thimble mechanism for injection molds, which drives multiple thimbles to move synchronously through the same driving mechanism, so that the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/40B29C45/26
CPCB29C45/4005B29C45/26B29C45/2608B29C2045/4042
Inventor 刘前文
Owner 刘前文
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