Neck Portion Chuck for Erected and Inverted Transfer
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Solution Overview
Problem
Existing molded product transfer apparatuses are limited to either erected or inverted transfer methods, leading to damage during high-speed transfers and instability in delivery operations, with conventional methods failing to ensure precise positioning and reliability across both transfer states.
Innovation Solution
A molded product delivery apparatus using paired chucks that simultaneously hold the outer wall of the neck portion, allowing for both erected and inverted transfers without damaging the product, with tapered designs and slit structures to enhance stability and prevent falling, and a blow molding machine incorporating this apparatus for improved delivery precision and speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the preform is transferred by supporting the lower surface of the support ring in an erected state, then the preform can be transferred without contacting the outer wall of the neck portion, but the apparatus cannot be used for inverted transfer and the lower surface of the support ring is damaged during high-speed transfer
Solution Approach 1:
The delivery chuck is designed with a universal gripping structure that can accommodate both erected and inverted transfer states. The chuck grips the outer wall of the neck portion above the support ring, allowing it to function effectively regardless of the preform's orientation, thus achieving multi-functionality for different transfer states.
Solution Approach 2:
The invention inverts the conventional approach by gripping the neck portion from above rather than supporting from below. This inverted gripping method allows the same chuck structure to effectively handle both erected and inverted transfer states, resolving the limitation of state-specific designs.
2Speed
If the preform is transferred by being held by a pin inserted into the neck portion in an inverted state, then high-speed transfer is possible without damage, but the preform falls off from the pin in erected state transfer
Solution Approach 1:
The delivery chuck provides a universal gripping solution that works for both inverted and erected transfer states, eliminating the need for state-specific holding mechanisms like pins. The chuck's gripping structure adapts to maintain secure holding regardless of transfer speed or orientation.
Solution Approach 2:
The invention replaces the pin-based mechanical insertion system with a chuck-based gripping system. This substitution eliminates the problem of preforms falling off during erected state transfer while maintaining the capability for high-speed inverted state transfer.
3Ease of operation
If the neck portion is gripped above the support ring, then the transfer chuck can secure a wide margin for gripping, but conventional methods fail to ensure precise positioning and reliability across both transfer states
Solution Approach 1:
The chuck is designed with localized gripping features that concentrate the gripping force on specific areas of the neck portion's outer wall. This localized quality approach ensures precise positioning and reliable gripping while maintaining a wide overall margin for operation.
Data Source
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AI summary
An object of the invention is to provide a molded product delivery apparatus capable of delivering a molded product without using a flange support structure limited to erected transfer or an inverted support pin limited to inverted transfer. A first transfer member (720) includes first paired chucks (720A, 720B) that hold a portion of an outer wall of a neck portion (2A) of a molded product 2, and a second transfer member (411) includes second paired chucks (412) that hold another portion of the outer wall of the neck portion (2A) of the molded product (2). From a state where the molded product (2) is held by both of the first paired chucks (720A, 720B) and the second paired chucks (412) simultaneously, by opening one of the first paired chucks (720A, 720B) and the second paired chucks (412) without interfering with the other, the molded product (2) is delivered between the first paired chucks (720A, 720B) and the second paired chucks (412).