Product Brief

Core Competitive Features

1. Ergonomic Labor-Saving Lever Injection Structure
   Extended long force-amplifying lever greatly reduces hand pressure required during injection, paired with built-in spring rebound mechanism for automatic plunger reset after each molding cycle. No external air source or hydraulic pump needed; users can start molding right after connecting power, suitable for long continuous sample preparation without excessive operator fatigue.
2. Independent Digital Constant Temperature Regulation
   Dedicated single-channel PID temperature controller delivers steady heating performance, adjustable from ambient temperature up to 300℃ with ±3℃ accuracy. Operators store fixed temperature parameters matching different resin types to avoid incomplete melting or thermal decomposition of heat-sensitive plastics during repeated comparative tests.
3. Detachable Melting Barrel For Complete Material Switch Cleaning
   The heating plasticizing cylinder can be fully disassembled without special tools, enabling thorough removal of residual pellets and color masterbatch when switching raw materials. This eliminates cross-contamination and color mixing interference, ensuring reliable contrast data for new filler and additive screening experiments.
4. Adjustable Bench Vise Universal Mold Base
   Heavy-duty sliding bench vise with rotary locking handle allows flexible clamping of small molds within 120×120×80mm overall dimension. Fast disassembly design shortens mold replacement time, ideal for labs that frequently switch prototype molds for multiple formula groups.
5. Ultra-Compact Lightweight Desktop Layout
   Integrated all-metal frame with anti-rust coating, total machine net weight only 35kg. Equipped four leveling foot pads to adapt uneven lab countertops, easy single-person transport between different testing stations. Low 500W rated power avoids industrial wiring renovation for small QC rooms and classroom labs.
6. Low Maintenance Simple Mechanical Design
   Minimal complex transmission parts cut long-term upkeep expenses. All contact surfaces are electroplated for rust resistance; daily maintenance only requires regular lubrication of sliding components, with spare plungers and heating barrels readily available for long-term continuous use.

Complete Technical Specification Table

Standard Molding Operating Procedures

1. Preheating & Temperature Setup
   Plug in power supply, adjust digital thermostat to the matching melting temperature of target plastic, wait 15–25 minutes for the heating barrel to reach stable constant temperature.
2. Mold Fixing & Positioning
   Place custom small mold inside the sliding bench vise, rotate adjustment handle to lock tightly without shifting during injection filling.
3. Raw Material Feeding
   Pour fully dried plastic pellets into the top feeding hopper, reserve sufficient plasticizing time to ensure uniform molten state inside the heating cylinder.
4. Manual Lever Injection & Pressure Holding
   Press down the long lever steadily to push molten resin into closed mold cavity, maintain pressure for preset duration to eliminate shrinkage and surface defects of tiny parts.
5. Cooling & Demolding
   Release the lever and wait for complete mold cooling, loosen the bench vise to take out finished prototypes or mechanical test strips for appearance and dimensional inspection.
6. Post-Test Cleaning & Shutdown
   When switching different plastic varieties, disassemble the melting barrel to clear residual melt; after daily work, cut power supply and let the heating core cool down naturally before storage.

Wide Industrial & Educational Application Scenarios

Polymer R&D Laboratories

University Material Teaching Classrooms

Product Prototype Design Studios

Biodegradable Material Factories

Small Custom Plastic Processing Workshops

Standard Factory Full Delivery Package

1. KR-129 manual vertical injection molding main unit
2. Labor-saving long injection lever and spring reset plunger assembly
3. Detachable alloy heating melting barrel set
4. Digital PID temperature control box and power switch assembly
5. Adjustable heavy-duty bench vise mold clamping fixture
6. Machine leveling foot pads and mold disassembly auxiliary tools
7. Multilingual operation manual matching thermoplastic molding processes
8. Factory temperature & injection stroke calibration certificate