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No.000060 Film Heat Cutting Mechanism
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A heated blade is used to reduce the required cutting force.
Relevant category
Cartridge heater L type
| Product name | Cartridge Heaters - L-Shaped |
|---|---|
| Part number | MCHL8-300-V100-W310-B200-M |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
The L type wire configuration is suitable for this application.
Available sizes
■Cartridge heater L type
| Material | Heat Resistance Temperature | ||||
|---|---|---|---|---|---|
| Main body | Collar | Terminal | Symbol | Lead wire Material Type | |
| 304 Stainless Steel | 304 Stainless Steel | Copper + Tin plating | B | Tin Plated Annealed Copper Fiber Glass Braided Wire | 180℃ |
| G | Silicon Rubber + Tin Plated Annealed Copper Wire | 180℃ | |||
| T | fluoropolymer + Nickel Plated Annealing Copper Wire | 260℃ | |||
| M | Mica PolyimideWound Silica + Nickel Coated Copper Wire | 400℃ | |||
■Sizes and Dimensions
| Heater O.D. | Heater length Configure in 1mm increments | Voltage (V) | Electrical power (W) Configure in 10W increments | Power density (W/cm2) | Lead wire length Configure in 10mm increment | Terminal Types |
|---|---|---|---|---|---|---|
| φ8 | 50 - 400 | 100 | 50-600 | 2≤W/cm2≤15 EW/cm2=W/{Dπ(L-7)/100} Calculate with the electrical power density of heat-generating part, not with the overall length. | 100 - 1000 | No Crimp Round Crimp Y-Shape Crimp |
| 200 | 50-1200 | |||||
| φ10 | 50 - 600 | 100 | 50-600 | |||
| 200 | 50-1200 | |||||
| φ12 | 100 | 50-800 | ||||
| 200 | 50-1600 | |||||
| φ14 | 100 | 50-800 | ||||
| 200 | 100-1600 |
Selection steps
■Cartridge heater selection steps
Cartridge heater overview (Selection method)
Accuracy Info
■Accuracy info. of cartridge heater (L-type)
Heater O.D. tolerance: 0/-0.1
Length tolerance ±2
Performance info.
■Cartridge heater load info.
Formula for electric power density:
Electric power density (W/cm2) = Electrical power (W) ÷ [Heater O.D. (cm) x π(3.14) x heating section length (cm)]
Heating section length (cm) = [Heater length (mm) - 7 (mm)] / 10
Technical calculations
■Determine the heat quantity required for the heater
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Application Overview
Purpose
- Combining a cartridge heater with a blade to cut specified lengths of resin belt.
Target workpiece
- Thin resin belt.
- Workpiece size: Width 200, Thickness 1mm
Design Specifications
Operating Conditions or Design Requirements
- External dims.: W305 x D400 x H262 mm
- Stroke: 40mm
Selection Criteria for Main Components
- Cartridge heater
- The electrical wire harness is perpendicular to the heater.
Design Evaluation
Verification of main components
Verify the electric power density of the heater based on the required amount of heat.
- Conditional value: Mass of heated object M = 3 kg
Specific heat Hc = 0.110 for the object to be heated [kcal / kg ℃]
Temperature rise Ta = 60℃ (Normally 20℃ is raised to 80℃)
Heating time Tm = 0.25 h
From efficiency η = 0.3 - Required amount of heat for the heater Q[kW] = (M × Hc × Ta) / (860 × Tm × η)
= (3 × 0.110 × 60) / (860 × 0.25 × 0.3)
= 0.307kW = 307W - Power density of heat generating section [W / cm²] = W / (3.14 × (D / 10) × (L / 10 - 1.5))
=310 / (3.14 × 0.8 × 30 - 1.5）
=4.3 W/cm²
→(2 ≦ 4.3 [W / cm²] ≦ 15), this can be produced.
Other Design Consideration
- The blade is placed diagonally to improve the cutting performance.
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