Press Slide Stop Control for Transfer Feeder Synchronization
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Solution Overview
Problem
In press forming systems, the synchronization of press operations with conveyance operations by a transfer feeder is challenging, leading to reduced productivity and quality issues due to blank striking and delayed conveyance, especially when the suppliable state of the forming material is not detected within a predetermined period.
Innovation Solution
The system includes a control device that stops the slide before it reaches the withdrawal position if the suppliable state of the forming material is not detected within a determination period, allowing for rapid resumption of the material supply operation and preventing blank striking by synchronizing the transfer feeder with the press operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the slide stops before reaching the withdrawal position when material is not detected, then blank striking is suppressed and productivity is improved, but the press operation timing must be dynamically adjusted which increases control complexity
Solution Approach 1:
The patent applies dynamics by making the slide stop position variable rather than fixed. The control device dynamically adjusts the stop position based on real-time detection of material suppliable state. When material is not detected within the determination period, the slide stops before the withdrawal position; when material is detected, the slide proceeds to the normal withdrawal position. This dynamic adjustment resolves the contradiction by enabling productivity improvement through selective stopping while managing control complexity through conditional logic.
Solution Approach 2:
The patent implements feedback through the detection device that continuously monitors the suppliable state of forming material and provides information to the control device. The control device uses this feedback to decide whether to stop the slide before the withdrawal position or allow it to reach the normal position. This feedback mechanism resolves the contradiction by enabling responsive control that improves productivity when needed while maintaining normal operation when material is available, thus managing overall system complexity.
2Manufacturing precision
If the transfer feeder synchronizes with the slide position, then blank striking is prevented and quality is maintained, but the synchronization control increases system complexity
Solution Approach 1:
The patent applies preliminary action by having the transfer feeder start its conveyance operation at a synchronous timing before the slide returns from the advance position to the withdrawal position. This timing is calculated in advance based on the determined stop position of the slide. By preparing the transfer feeder operation in advance and coordinating it with the slide's movement timeline, the system prevents blank striking and maintains quality while managing synchronization complexity through pre-planned coordination.
3Productivity
If the slide returns to the withdrawal position normally, then the press operation cycle is maintained, but blank striking occurs when material is not available causing quality issues
Solution Approach 1:
The patent implements preliminary anti-action by having the control device detect the suppliable state of forming material in advance during the determination period and take preventive action by stopping the slide before it reaches the withdrawal position when material is not available. This preliminary detection and preventive stopping prevents the harmful effect of blank striking before it can occur, thus maintaining quality while allowing the operation cycle to continue normally when material is available.
Data Source
AI summary
A press forming system includes a press working unit, a material supply device, a detection device, and a control device. The press working unit includes a slide that moves in accordance with an operation pattern in which the slide passes through an advance position where press forming is formed from a withdrawal position, and returns to the withdrawal position. The material supply device starts a supply operation at a synchronous timing before the slide returns from the advance position to the withdrawal position. The control device performs a control for stopping the slide before the slide reaches the withdrawal position from the advance position in a case where the suppliable state of the forming material is not detected within a predetermined determination period by the detection device.