Valve pin hot runner cylinder
A valve needle and heat flow technology, applied in the field of hot runner injection molding, can solve problems such as affecting work efficiency, increasing production costs, and increasing parts and components, and achieves the effect of reducing use and maintenance costs, prolonging service life, and reducing production costs.
Active Publication Date: 2020-05-12
YUDO SUZHOU HOT RUNNER SYST
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Problems solved by technology
However, the high-temperature splitter plate inevitably transfers heat to the upper cylinder body through the support plate, causing the elastic-plastic sealing ring and other components in the cylinder body to be heated, which is likely to cause failure and directly affect the performance of the cylinder body. replace
Replacing the sealing ring is time-consuming and laborious, which affects work efficiency and increases the use and maintenance costs of the valve needle hot runner cylinder
[0004] In the prior art, cooling devices, such as waterway plates, are also installed around the cylinder to take away heat and reduce the aging effect of high temperature on the sealing ring. cost
Method used
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[0023] The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.
[0024] In each drawing of the present invention, for convenience of illustration, some dimensions of structures or parts are exaggerated relative to other structures or parts, and therefore, are only used to illustrate the basic structure of the subject matter of the present invention.
[0025] The terms used herein to denote relative spatial positions such as "upper", "above", "under", "under", etc. are for convenience of description to describe the relative position of one element or feature relative to another as shown in the drawings. Relationships of units or features. The terms of spatial relati...
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The invention discloses a valve needle type hot runner cylinder. The valve needle type hot runner cylinder comprises a cylinder body and a supporting plate, wherein a piston is arranged in the cylinder body, the piston is used for driving a valve needle connected with the piston to do longitudinal movement relative to the cylinder body, and one end of the cylinder body is connected with the supporting plate; the valve needle type hot runner cylinder further comprises an elastic part, wherein the elastic part is arranged between the supporting plate and the cylinder body, a template is arrangedat the other end of the cylinder body, and the template can drive the cylinder body to move towards the direction of the supporting plate under the action of the elastic force of the elastic part, and the cylinder body abuts against the template under the action of the elastic force of the elastic part. The elastic part is arranged, so that the heat of a flow dividing plate is effectively transferred to the cylinder body through the supporting plate; the heat is further transferred to the template so as to accelerate heat dissipation; and a cooling device does not need to be additionally arranged, so that the system is simplified, and the problem that a sealing ring in the cylinder body is prone to being invalid caused by thermal corrosion is solved, the service life of the sealing ring is prolonged, and the cost is reduced.
Description
technical field [0001] The invention belongs to the technical field of hot runner injection molding, and in particular relates to a valve needle type hot runner cylinder. Background technique [0002] A hot runner is a collection of heating components used in injection molds to inject molten plastic into the cavity of the mold. The hot runner system generally consists of several parts such as hot nozzles, manifolds, temperature control boxes and accessories. The hot runner system is divided into an open hot runner system and a valve needle hot runner system. In the valve needle hot runner system, the valve needle is often driven by a cylinder or an oil cylinder. Through the control of the cylinder, the valve needle can be driven to move, and then Control gate opening and closing. [0003] In the prior art, the cylinder body of the cylinder or oil cylinder is connected to the manifold through the support plate, and the support plate and the manifold are respectively provide...
Claims
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IPC IPC(8): B29C45/27B29C45/28
CPCB29C45/27B29C45/28
Inventor 李象烈
Owner YUDO SUZHOU HOT RUNNER SYST