Locking Wedge with Pressure Plate – Precision Slide Positioning for Injection Moulds

The locking wedge with pressure plate from KNARR is a specialized mould component used in injection moulding to accurately position and securely hold slide elements during mould closing and the injection process. The wedge shifts the slide into its correct working position, while the pressure plate provides support so that the slide can withstand the substantial forces encountered during injection, reducing movement and improving repeatability. 

Why Precise Slide Support Matters

In moulds producing parts with undercuts or complex geometries, stable slide support is essential to avoid issues like burr formation or excessive wear. If the wedge angle is too steep, holding force drops and slides can shift under pressure; if it’s too shallow, wear and breakage can occur. The combination of a well-designed wedge and matched pressure plate ensures optimal force distribution and moulding quality on every cycle. 

The VARIO Concept for Fast Adjustment

The VARIO version of the locking wedge with pressure plate allows mould technicians to fine-tune adjustments directly on the injection moulding machine without disassembly. This capability saves time, minimizes downtime, and eliminates the need for regrinding, welding or using reference sheets. A built-in latching system and scale provide precise, reproducible adjustments for consistent production. 

Installation Flexibility and Material Options

KNARR’s locking wedge with pressure plate can be mounted from the parting line and includes countersunk screws for secure installation. Versions are available in standard materials as well as stainless steel, offering corrosion resistance and durability in demanding production environments. 

Custom Solutions for Enhanced Performance

Beyond standard configurations, customized options include a steplessly adjustable pressure plate or an adjustment unit that brings fine-tuning capability to classic locking wedge designs or directly into mould plates. These solutions offer greater flexibility for unique tooling requirements and complex mould designs. 

For more information, please visit: https://knarr.com/news/?lang=en

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