一种带自清洁功能的热流道阀针机构
By introducing a scraper and air pump system into the hot runner valve needle mechanism, the problem of foreign matter on the valve needle affecting stability is solved, achieving self-cleaning and improved stability, and ensuring the normal operation of the valve needle.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TENGSHENG PRECISION HOT RUNNER TECHNOLOGY (SUZHOU) CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-17
AI Technical Summary
In existing hot runner systems, foreign matter adhering to the valve needle affects its rising and falling stability, and there is a lack of effective cleaning mechanisms.
A hot runner valve needle mechanism with self-cleaning function was designed. Impurities are scraped off as the valve needle rises through a scraper and air pump system, and impurities on the scraper are blown off by gas. Combined with a buffer and stabilizing structure, the stability and cleanliness of the valve needle are ensured.
It effectively cleans impurities from the valve needle, preventing them from affecting subsequent use, ensuring the stability of the valve needle during rising and falling, reducing impact force, and improving service life.
Smart Images
Figure CN224510298U_ABST
Abstract
Claims
1. A hot runner valve pin mechanism with self-cleaning function, comprising a buffer tank (1), characterized in that: A sleeve (2) is fixedly installed at the bottom center of the buffer box (1). A scraper (3) is fixedly installed at the bottom of the sleeve (2). The scraper (3) is arranged in a ring at the bottom of the sleeve (2). An air inlet pipe (4) is provided on one side end face of the buffer box (1). The air inlet pipe (4) extends into the buffer box (1). A diverter pipe (5) is provided at the bottom center of the buffer box (1). The diverter pipe (5) is ring-shaped. The air inlet pipe (4) and the diverter pipe (5) are connected. Multiple air outlet pipes (6) are provided inside the sleeve (2). The multiple air outlet pipes (6) are arranged in a circumferential array inside the sleeve (2). The upper end of the air outlet pipe (6) is connected to the diverter pipe (5). The end of the air outlet pipe (6) extends out from inside the scraper (3). An air pump (16) is provided on the air inlet pipe (4).
2. The hot runner valve pin mechanism with self-cleaning function according to claim 1, characterized in that: The top of the buffer box (1) is fixedly mounted with a mounting housing (7), and the top of the mounting housing (7) is fixedly mounted with a driver (8). The output end of the driver (8) passes through the mounting housing (7), and the output end of the driver (8) is fixedly mounted with a mounting base (9).
3. The hot runner valve pin mechanism with self-cleaning function according to claim 2, characterized in that: The mounting base (9) is provided with a valve needle body (10), which extends out from the buffer box (1). A connecting rod (11) is fixedly installed at the bottom of the mounting base (9), and a connecting seat (12) is sleeved at the bottom of the connecting rod (11). A limit plate (13) is fixedly installed at the bottom of the connecting rod (11).
4. The hot runner valve pin mechanism with self-cleaning function according to claim 3, characterized in that: A stabilizing plate (14) is fixedly installed at the bottom of the connecting seat (12). A valve needle body (10) passes through the stabilizing plate (14). A buffer spring (15) is fixedly installed at the bottom of the stabilizing plate (14). The other end of the buffer spring (15) is connected to the buffer box (1).
5. The hot runner valve pin mechanism with self-cleaning function according to claim 3, characterized in that: The valve needle body (10) penetrates the sleeve (2) and the scraper (3), and the outer surface of the valve needle body (10) and the scraper (3) are in contact.