1、 Overview
The SM80 three station double head pipe shrinking machine (also known as pipe end forming machine) is controlled by a microcomputer, driven by hydraulic pressure, displayed with Chinese subtitles, operated through human-machine dialogue, with three station mold changing, hydraulic clamping, and mechanical positioning for pipe shrinking, expansion, and pipe end forming (after changing the structure of the grinding tool). This machine uses linear guide rails as the carrier to ensure wear free operation and good product repeatability. It is suitable for end treatment of iron pipes, furniture, automotive air conditioning, fuel pipelines, etc.
2、 Main technical parameters:
Key Specifications/Models | SM80NC-2H-3S | Notes |
Maximum shrinkage capacity | Φ80X2 |
|
Maximum shrinkage stroke | 130mm |
|
Longest clamping pipe fittings
| 500mm | according to customer requirements |
Change mold position | 3个 |
|
Shrinking speed | 4~5sec/130mm |
|
System dependent pressure | 14MPa |
|
Motor power | 11KW |
|
Oil pump displacement | 55ml/rev | Customer provided 46 # anti-wear hydraulic oil |
3、 Principle Introduction
This machine consists of the main transmission mechanism (main oil cylinder), clamping mechanism(clamping cylinder), mold changing mechanism (mold changing cylinder), positioning mechanism, electrical system, hydraulic system and other main parts.
The main transmission mechanism is shown in Figure 1-1, the clamping mechanism is shown in Figure 1-2, the mold changing mechanism is shown in Figure 1-3, the electrical system is shown in Figure 2, and the hydraulic principle is shown in Figure 4. Adjust the length according to the contracted pipe fittings, and the specific working principle is as follows:
1. No load: Connect the power supply, press the motor start button SA, the motor will start, the indicator light H will light up, the oil pump 3 will work, and the oil will be sucked from the oil tank through the oil filter 2 and returned to the oil tank through the overflow valve 5.
2. Pinching: Press the button (two times) to enter the automatic working state: YA9 and YA2 are powered on, solenoid valve 8 and overflow valve 5 work, the clamping cylinder moves, and the time is controlled by the set time.
3. Shrinking: When the set time is reached, YA2 is powered off, YA1 is powered on, solenoid valves 13-16 are activated, and the shrinking cylinder works to shrink the pipe. The length is controlled by adjusting the nut and time.
4. Retraction: When the set time position is reached, YA1 is powered off, YA5 is powered on, solenoid valves 13-16 make directional changes, and the contraction cylinder retracts.
