CN103419327A - Lever-valve needle single nozzle - Google Patents

Abstract

The invention discloses a lever-valve needle single nozzle which comprises a feed nozzle cap and a side cylinder support body, wherein a feed opening is formed in the center of the feed nozzle cap; the side cylinder support body is connected to the lower end of the feed nozzle cap; the feed opening of the side cylinder support body corresponds to the feed passage of the side cylinder support body; a switching-over body is arranged at the lower end of the side cylinder support body; the feed passage is arranged in the middle of the switching-over body longitudinally, and is inclined; heaters are clung to the outer sides of the side cylinder support body and the switching-over body; the upper end of the switching-over body is communicated with the feed passage of the side cylinder support body; the lower end of the switching-over body is communicated with the central hole of a spray nozzle main body. The lever-valve needle single nozzle has the advantages that the structure is simple; the production cost is low; meanwhile, a cylinder body is far away from thermal source of a hot runner, so as to efficiently reduce the overheating phenomenon at the periphery of a seal ring, prolong the service life of the seal ring, and further prolong the service life of the cylinder; moreover, the mobile strength of a valve needle is effectively enhanced through a lever, so that the high injection pressure requirement of production activity is met effectively.

Description

A lever valve needle single mouth

technical field

The invention relates to a lever valve needle single nozzle, in particular to a lever valve needle single nozzle in the injection molding industry.

Background technique

The current valve needle single nozzles are all cylinders or oil cylinders and single nozzles as a whole, so the sealing ring is easily damaged in a high temperature environment, which greatly reduces the service life of the cylinder.

Contents of the invention

Aiming at the disadvantages of the existing valve needle single mouth, the invention provides a novel lever valve needle single mouth.

In order to achieve the above object, the measures taken by the present invention

A lever valve needle single nozzle, including a feed nozzle cap and a side cylinder support body, the center of the feed nozzle cap is provided with a feed hole, the lower end of the feed nozzle cap is connected with a side cylinder support body, and the feed nozzle The feeding hole of the cap corresponds to the feeding channel of the side cylinder support body. An adapter body is provided at the lower end of the side cylinder support body. A feed channel is longitudinally provided in the middle of the adapter body, and the feed channel is inclined. The outer side of the support body and the adapter body is close to the heater, the upper end of the adapter body communicates with the feed channel of the side cylinder support body, the lower end of the adapter body communicates with the center hole of the nozzle body, and the nozzle body is surrounded by a nozzle The lower end of the nozzle body is connected to the discharge nozzle cap, and the nozzle body is also closely attached to the heater. The center hole of the nozzle body is inserted with a valve needle. Correspondingly, the top of the valve needle is pushed against the notch at one end of the lever, the lever is rotatably connected to the support frame, the support frame is fixed on the support body of the side cylinder, and the cylinder body is fixed on the support frame. The end of the lever is attached.

Beneficial effects of the present invention: simple structure, low production cost; at the same time, the cylinder body is kept away from the heat radiation source of the hot runner, effectively reducing the overheating phenomenon around the sealing ring, increasing the service life of the sealing ring, thereby increasing the service life of the cylinder ; In addition, the lever also effectively increases the strength of the valve pin movement, effectively meeting the need for high injection pressure production operations.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Detailed ways

A lever valve needle single nozzle, as shown in Figure 1, includes a feed nozzle cap 1 and a side cylinder support body 2, the center of the feed nozzle cap 1 is provided with a feed hole, and the lower end of the feed nozzle cap 1 is connected to There is a side cylinder support body 2, and the feed hole of the feed nozzle cap 1 corresponds to the feed channel of the side cylinder support body 2. The lower end of the side cylinder support body 2 is provided with an adapter body 4, and the middle of the adapter body 4 is longitudinally There is a feed channel, and the feed channel is inclined, the side cylinder support body 2 and the outer side of the adapter body 4 are close to the heater 3, and the upper end of the adapter body 4 communicates with the feed channel of the side cylinder support body 2 , the lower end of the adapter body 4 communicates with the central hole of the nozzle body 5, the upper end of the nozzle body 5 is covered with a nozzle holder 6, the lower end of the nozzle body 5 is connected with a discharge nozzle cap 7, and the nozzle body 5 is also closely attached to a heater 3. A valve needle 8 is inserted in the center hole of the nozzle body 5, the tapered bottom end of the valve needle 8 corresponds to the shape of the inner hole of the discharge nozzle cap 7, and the top end of the valve needle 8 rests on the notch at one end of the lever 9 position, the lever 9 is rotatably connected to the support frame 12, the support frame 12 is fixed on the side cylinder support body 2, the cylinder body 11 is fixed on the support frame 12, and the piston 10 of the cylinder body 11 is connected to the end of the lever 9. In the actual implementation process of the patent, the customer's mold and the feed nozzle cap 1 are closely matched to ensure concentric glue feeding, and the side cylinder support body 2 relies on the feed nozzle cap 1 to ensure concentricity, and the plastic coming in from the feed nozzle cap 1 passes through the heater 3 heating, and ensure that the temperature of the plastic is transferred to the adapter body 4; the side cylinder support body 2 and the adapter body 4 are closely matched to allow the material to turn to the nozzle main body 5, and at the same time, the adapter body 4 also needs the heater 3 to heat and keep warm; the material passes through the transfer body The turning of the connecting body 4 transitions to the nozzle main body 5, the nozzle main body 5 and the nozzle holder 6 are closely matched, and the nozzle holder 6 and the mold are closely matched to ensure that the nozzle holder 6 and the nozzle main body 5 are concentric and support the nozzle main body 5, the adapter body 4, and the heating 3, side cylinder support body 2, feed nozzle cap 1, and then the material flows through the nozzle body 5 to the discharge nozzle cap 7, and flows to the product through the gate of the discharge nozzle cap 7, and at the same time, the discharge nozzle cap 7 The outside of the bottom is closely matched with the customer's mold to ensure concentricity and no plastic is exposed. When the product is fully injected, the material is sealed in the discharge nozzle cap 7 through the angle cooperation between the valve needle 8 and the discharge nozzle cap 7; in actual work, the valve needle 8 plays a sealing effect through the transmission of the lever 9; the lever 9 The piston 10 is pushed to rotate, and the piston 10 and the cylinder 11 are driven by the gas coming in and out; the cylinder 11 is fixed on the side cylinder support body 2 through the support frame 12 with good fixing effect.

Simple modifications and replacements by those skilled in the art are within the protection scope of the present invention.

Claims (1)

1. A lever valve needle single mouth, comprising feed nozzle cap (1), side cylinder support body (2), it is characterized in that, the center of described feed nozzle cap (1) is provided with feed hole, feed The lower end of the nozzle cap (1) is connected with a side cylinder support body (2), and the feeding hole of the feed nozzle cap (1) corresponds to the feed channel of the side cylinder support body (2), and the side cylinder support body (2) ) is provided with an adapter body (4), the middle of the adapter body (4) is provided with a feed channel longitudinally, and the feed channel is inclined, and the side cylinder support body (2) and the outside of the adapter body (4) Closely attached to the heater (3), the upper end of the adapter body (4) communicates with the feed channel of the side cylinder support body (2), and the lower end of the adapter body (4) communicates with the central hole of the nozzle body (5). Nozzle holder (6) is sheathed on the periphery of the upper end of the nozzle main body (5), the lower end of the nozzle main body (5) is connected with a discharge nozzle cap (7), and a heater (3) is also attached to the outside of the nozzle main body (5). A valve needle (8) is inserted in the center hole of (5), the tapered bottom end of the valve needle (8) corresponds to the shape of the inner hole of the discharge nozzle cap (7), and the top end of the valve needle (8) rests on the lever In the notch position of one end of (9), the lever (9) is rotatably connected on the support frame (12), the support frame (12) is fixed on the side cylinder support body (2), and the cylinder body (11) is fixed on the support frame ( 12), and the piston (10) of the cylinder (11) is connected with the end of the lever (9).

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