Clamping Device Tie Bar Pullout Mechanism
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Solution Overview
Problem
Existing pullout drive devices in die casting machines are prone to damage when directly receiving the load of tie bars during mold exchange, and the process of smoothly pulling out tie bars is not efficiently facilitated, leading to increased work time.
Innovation Solution
A clamping device with a separate support mechanism that includes a suspension member and movable parts to suspend the tie bar, allowing it to move independently of the pullout drive device, along with a pullout drive device that provides driving force to the tie bar, enabling smooth and efficient tie bar extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pullout drive device and tie bar are integrally connected, then the tie bar can be pulled out, but the screw shafts of the pullout drive device are liable to be damaged due to direct load reception
Solution Approach 1:
The system is divided into separate functional components: the pullout drive device (with screw shaft) and the tie bar are separated by introducing a coupling member and a support mechanism. The coupling member transmits only the driving force, while the support mechanism separately supports the tie bar load, preventing direct transmission of load to the screw shaft.
Solution Approach 2:
A coupling member is introduced as an intermediary between the screw shaft and the tie bar. This coupling member, together with the support mechanism, acts as a mediator that separates the driving function from the load-bearing function, allowing the screw shaft to rotate without directly supporting the tie bar's weight or pulling load.
2Productivity
If tie bars are smoothly pulled out, then mold exchange work is facilitated and work time is shortened, but existing pullout drive devices cannot achieve smooth pullout due to load-related friction and resistance
Solution Approach 1:
The support mechanism provides upward support force that counteracts the gravitational weight of the tie bar. By balancing the weight, the system eliminates the friction and resistance that would otherwise occur during pullout, enabling smooth and rapid extraction of the tie bar during mold exchange operations.
3Reliability
If a separate support mechanism is introduced, then the load of the tie bar is supported separately from the pullout drive device, but the device complexity increases
Solution Approach 1:
The support mechanism is designed with multi-functionality: it supports the tie bar weight during both the mold operating cycle and the pullout operation. The coupling member serves dual purposes by both transmitting driving force and enabling the separation of load paths. This reduces the need for additional specialized components.
Solution Approach 2:
The support mechanism and coupling member are integrated into a unified system that works together with the existing pullout drive device. Rather than adding completely separate independent systems, the invention merges the support function with the drive mechanism, sharing common components and mounting structures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for the effective and efficient pulling out of tie bars, reducing the risk of damage to the pullout drive devices and shortening the work time required for mold exchange by distributing the load and facilitating smooth movement.
Implementation Method 1
a rolling member which is pivotally supported by the body member to be able to roll in the mold opening and closing direction on the upper surface of the suspension member
Data Source
AI summary
The clamping device has a fixed platen, a moving platen which is movable in an mold opening and closing direction relative to the fixed platen, a tie bar which bridges the fixed platen and the moving platen, a pullout drive device which gives to the tie bar a driving force making the tie bar move to the back side of the fixed platen, and a support mechanism which is provided separately from the pullout drive device and support the load of the tie bar when moving the tie bar.