Hot-runner pin valve type nozzle for injection molding
An injection molding and hot runner technology, which is applied in the field of hot runner needle valve nozzles, can solve the problems of affecting the fluidity of molten resin, the surface is prone to wear, and the molten resin is easy to harden, so as to shorten the production cycle, prevent the molten resin from hardening, The effect of reducing heat loss
Active Publication Date: 2011-04-06
哈希斯热流道科技(苏州)有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] However, since the gate at the front end of the nozzle is located on the longitudinal axis of the body, that is, the center of the front end of the body, there is a certain distance between the gate and the shell of the body. When the mold has a concave and narrow part, the parts around the gate and the entrance of the groove There is interference and cannot be placed inside, for example, molding" "" shaped product (where the space is narrow and recessed inward), the gate cannot be set in the recessed part due to the interference of the nozzle body around the gate, so the existing solution is to set the gate at the part of the product Outer side (the outer side of the concave part), the product formed in this way will leave traces of the gate on the outer surface, which needs to be removed through subsequent processing procedures, which not only prolongs the production cycle, but also increases production costs
[0004] In addition, because the valve needle is located in the flow channel and reciprocates in the flow channel to open and close the gate, and the valve needle is in reciprocating contact with the molten resin in the flow channel for a long time, the surface is prone to wear
[0005] Furthermore, the nozzle gate is usually made of metal material integrally formed with the body, so the outward heat loss at the gate is large, so the molten resin near the gate is easy to harden, affecting the fluidity of the molten resin
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0026] Embodiment one: see Fig. 1 to Image 6 As shown, a hot runner needle valve nozzle for injection molding includes a nozzle body 10, which is provided with a flow channel 12 for molten resin to flow, and the front end of the body 10 is provided with a gate 11 for injecting molten resin into the mold. The gate 11 is not located at the center of the body 10, but is formed eccentrically. The inner runner 12 of the main body is connected with the inner runner of the manifold 1, and the molten resin is injected into the inner runner 12 of the main body from the inner runner of the manifold 1, and moves to the gate 11, and is driven by the piston 3 and the cylinder 4 in the main body 10. The reciprocating movement of the valve needle in the valve needle action hole 13 realizes the opening and closing of the gate 11, and the piston 3 and the cylinder 4 are respectively arranged on the distributor plate 1, as shown in FIG. 1 . The valve needle action hole 13 is not in the center...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a hot-runner pin-valve nozzle for injection molding, which comprises a nozzle body and a heater. A runner for liquated resin to flow through and a valve pin are arranged in the nozzle body. A gate for injecting the liquated resin into a mold is arranged on the front end of the nozzle body. The nozzle is characterized in that the gate is eccentrically arranged relative to the center of the nozzle body. Owing to the eccentric arrangement, the gate can enter the narrow and concave part during the manufacture of products with narrow space and concavity, so that the gate mark is not left on the outer surface of the product but on the inner side thereof. In addition, the contact between the valve pin and the liquated resin is minimized so as to prevent the valve pin frombeing damaged.
Description
technical field [0001] The invention relates to a mold device for injection molding, in particular to a hot runner needle valve nozzle for injecting molten resin into the mould. Background technique [0002] The hot runner nozzle on the mold is a device for injecting molten material into the cavity of the mold, including the nozzle body and the heater installed on the body. The nozzle body is provided with a flow channel that runs through the body for the molten resin to move, and is driven by a piston cylinder. The valve needle is set in the center of the flow channel, the front end of the nozzle body shrinks to the middle to form a gate, the flow channel is connected with the splitter plate, the molten resin flows into the flow channel from the splitter plate, and the valve needle moves back and forth in the flow channel to open and close the gate. The molten resin is injected into the mold cavity from the gate. [0003] However, since the gate at the front end of the noz...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/27B29C45/28B29C45/73
Inventor 许南旭
Owner 哈希斯热流道科技(苏州)有限公司