Needle valve type hot runner assembly

Abstract

The utility model relates to the technical field of hot runners, and discloses a needle valve type hot runner assembly which comprises a valve body and an outer ring, a nozzle is arranged at the lower end of the valve body, an inner cavity is formed in the valve body, a valve needle is installed in the inner cavity, limiting rods are arranged on the two sides of the lower end of the valve body, and the limiting rods are arranged on the outer ring. Limiting grooves are formed in the two sides of the upper end of the nozzle, inserting holes are formed in the two sides of the interior of the lower end of the valve body, inner grooves are formed in the two sides, located outside the inserting holes, of the interior of the nozzle, stainless steel blocks are installed in the inner grooves, and inserting rods are arranged on the sides, close to the inserting holes, of the exterior of the stainless steel blocks; a reset spring is installed on the side, away from the inserting rod, of the outer portion of the stainless steel block, the outer ring is arranged outside the nozzle, and a first magnet ring is arranged in the outer ring. The stainless steel block is attracted through the first magnet ring structure, so that the inserting rod is pulled out of the inserting hole, and the hot nozzle and the valve body are conveniently separated for cleaning.

Description

TECHNICAL FIELD

[0001] The utility model relates to hot runner technology field, concretely is a needle valve type hot runner assembly. BACKGROUND

[0002] The needle valve type hot runner assembly is a kind of hot runner system widely used in injection mold, it controls the opening and closing of sprue by the mechanical movement of valve needle, to realize the control to plastic melt flow.

[0003] When the temperature control of hot runner system is improper, or when the downtime is too long in production process, plastic melt will solidify in flow channel, to cause blockage.

[0004] Common nozzle cannot be separated from valve body, to clean its inside inconveniently, conventional solution is to carefully dislodge the blockage from nozzle by using fine metal wire or other tools, but, this mode is easy to damage the hot runner inside nozzle and hot runner internal components, for this, a needle valve type hot runner assembly is provided. UTILITY MODEL CONTENTS

[0005] (One) technical problem solved

[0006] In view of the deficiencies of prior art, the utility model provides a needle valve type hot runner assembly to solve the problems in the above background technology.

[0007] (Two) technical scheme

[0008] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a needle valve type hot runner assembly, including valve body and outer ring, the lower end of valve body is provided with nozzle, the inside of valve body is provided with inner cavity, the inside of inner cavity is installed with valve needle, the inside of valve body and nozzle is provided with interlayer, the interlayer in valve body is provided with first heater, the interlayer in nozzle is provided with second heater, the lower end of valve body is provided with limit rod on both sides, the upper end of nozzle is provided with limit slot on both sides, and limit rod and limit slot are matched, the inside of lower end of valve body is provided with insertion hole on both sides, the inside of nozzle is provided with inner groove on both sides outside insertion hole, the inside of inner groove is installed with stainless steel block, the outside of stainless steel block is provided with insertion rod on the side close to insertion hole, and insertion rod and insertion hole are matched, the outside of stainless steel block is installed with return spring on the side away from insertion rod, the outer ring is arranged at the outside of nozzle, and the inside of outer ring is provided with first magnet ring.

[0009] Preferably, the outside upper end of the nozzle is provided with a heat insulation ring on one side, and the heat insulation ring is connected with the nozzle, and the heat insulation ring is used to block the heat transferred from the nozzle to the stainless steel ring.

[0010] Preferably, the outer part of the heat insulation ring is provided with a stainless steel ring, and the stainless steel ring is connected with the heat insulation ring.

[0011] Preferably, the upper end of the outer ring is provided with a second magnet ring, and the second magnet ring is connected with the outer ring, and the second magnet ring is used for adsorbing the stainless steel ring.

[0012] Preferably, the outer part of the outer ring is provided with an anti-skid convex ring, and the anti-skid convex ring is connected with the outer ring, and the anti-skid convex ring improves the anti-skid property of the outer part of the outer ring.

[0013] Preferably, the first heater is connected with the valve body, and the second heater is connected with the nozzle, and the second heater is used for heating the nozzle.

[0014] (Three) beneficial effects

[0015] Compared with the prior art, the utility model provides a needle valve type hot runner assembly, has the following

[0016] Beneficial effects:

[0017] The utility model discloses a first magnet ring adsorbs stainless steel block, and stainless steel block removes and drives the insertion rod to separate from the insertion hole, and then cancels the connection of nozzle and valve body, and then separates nozzle and valve body, makes nozzle fully expose, and then facilitates the cleaning of nozzle, and the above -mentioned solves the problem of background art. ACCURACY OF DRAWINGS

[0018] Figure 1 It is the overall structure perspective drawing of the utility model;

[0019] Figure 2 It is the overall structure sectional view of the utility model;

[0020] Figure 3 It is the Figure 2 It is the local enlarged view of A area of the utility model.

[0021] In the drawing: 1, valve body;2, nozzle;3, inner chamber;4, valve needle;5, first heater;6, second heater;7, limit rod;8, limit groove;9, inner groove;10, stainless steel block;11, return spring;12, insertion rod;13, insertion hole;14, outer ring;15, anti -skid convex ring;16, first magnet ring;17, second magnet ring;18, heat insulation ring;19, stainless steel ring. SPECIFIC IMPLEMENTATION

[0022] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.

[0023] The utility model provides a technical scheme, a needle valve type hot runner assembly, please refer to Figure 1 、 Figure 2 And Figure 3 , including valve body 1 and outer ring 14, the lower end of valve body 1 is provided with nozzle 2, the inside of valve body 1 is provided with inner chamber 3, the inside of inner chamber 3 is installed with valve needle 4, the inside of valve body 1 and nozzle 2 is provided with interlayer, the interlayer in valve body 1 is provided with first heater 5, the interlayer in nozzle 2 is provided with second heater 6, the lower end both sides of valve body 1 are provided with limit rod 7, the upper end both sides of nozzle 2 are provided with limit slot 8, and limit rod 7 is matched with limit slot 8, the inside both sides of the lower end of valve body 1 are provided with insertion hole 13, the inside both sides of nozzle 2 outside insertion hole 13 are provided with inner slot 9, the inside of inner slot 9 is installed with stainless steel block 10, one side of the outside of stainless steel block 10 near insertion hole 13 is provided with insertion rod 12, and insertion rod 12 is matched with insertion hole 13, one side of the outside of stainless steel block 10 away from insertion rod 12 is installed with reset spring 11, outer ring 14 is arranged at the outside of nozzle 2, the inside of outer ring 14 is provided with first magnet ring 16.

[0024] Please refer to Figure 3 The outside upper end one side of nozzle 2 is provided with heat insulation ring 18, and heat insulation ring 18 is connected with nozzle 2, and heat insulation ring 18 is used to block the heat of nozzle 2 from being transferred to stainless steel ring 19.

[0025] Please refer to Figure 3 The outside of heat insulation ring 18 is provided with stainless steel ring 19, and stainless steel ring 19 is connected with heat insulation ring 18.

[0026] Please refer to Figure 3 The upper end of outer ring 14 is provided with second magnet ring 17, and second magnet ring 17 is connected with outer ring 14, and second magnet ring 17 is used to adsorb stainless steel ring 19.

[0027] Please refer to Figure 1 And Figure 3 The outside of outer ring 14 is provided with anti-skid convex ring 15, and anti-skid convex ring 15 is connected with outer ring 14, and anti-skid convex ring 15 improves the anti-skid property of the outside of outer ring 14.

[0028] Please refer to Figure 2 And Figure 3The first heater 5 is connected with the valve body 1, and the second heater 6 is connected with the nozzle 2, the first heater 5 is used for heating the valve body 1, and the second heater 6 is used for heating the nozzle 2.

[0029] The scheme: the outer ring 14 is sleeved on the outside of the nozzle 2 and is moved upward, the first magnet ring 16 is close to the stainless steel block 10, the first magnet ring 16 is adsorbed to the stainless steel block 10 through magnetic force and moves outward, thereby driving the insertion rod 12 to be separated from the insertion hole 13, the second magnet ring 17 is adsorbed to the stainless steel ring 19 through magnetic force, the outer ring 14 is moved downward, the stainless steel ring 19 is moved under the action of magnetic force, thereby driving the nozzle 2 to be separated from the valve body 1, in this way, the nozzle 2 is convenient to disassemble, the inside of the nozzle 2 is fully exposed, thereby being convenient to clean the inside, when installing, the nozzle 2 is sleeved at the bottom of the valve body 1 through the outer ring 14 adsorbing the stainless steel ring 19, the limiting rod 7 is combined with the limiting groove 8, then abuts against the nozzle 2, the outer ring 14 is pulled downward and separated from the stainless steel ring 19, the reset spring 11 resets and drives the stainless steel block 10, so that the insertion rod 12 is inserted into the insertion hole 13, thereby limiting and fixing the nozzle 2.

[0030] It should be noted that the relative terms such as first and second and the like are used herein solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0031] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A needle valve hot runner assembly comprising a valve body and an outer ring, a nozzle is arranged at the lower end of the valve body, an inner cavity is arranged in the valve body, and a valve needle is installed in the inner cavity, characterized in that: The inner part of the valve body and the nozzle is provided with a sandwich, the sandwich of the valve body is provided with a first heater, the sandwich of the nozzle is provided with a second heater, the lower end of the valve body is provided with a limiting rod on both sides, the upper end of the nozzle is provided with a limiting slot on both sides, the limiting rod is matched with the limiting slot, the inner part of the lower end of the valve body is provided with a bushing on both sides, the inner part of the nozzle is provided with an inner slot on both sides outside the bushing, a stainless steel block is installed in the inner slot, a plug rod is arranged on the side of the outer part of the stainless steel block close to the bushing, the plug rod is matched with the bushing, a return spring is installed on the side of the outer part of the stainless steel block away from the plug rod, an outer ring is arranged on the outer part of the nozzle, and a first magnet ring is arranged in the inner part of the outer ring.

2. A needle valve hot runner assembly according to claim 1, wherein: The outer part of the upper end of the nozzle is provided with a heat insulation ring, and the heat insulation ring is connected with the nozzle.

3. A needle valve hot runner assembly according to claim 2, wherein: The outer part of the heat insulation ring is provided with a stainless steel ring, and the stainless steel ring is connected with the heat insulation ring.

4. A needle valve hot runner assembly according to claim 3, wherein: The upper end of the outer ring is provided with a second magnet ring, and the second magnet ring is connected with the outer ring.

5. A needle valve hot runner assembly as defined in claim 4, wherein: The outer part of the outer ring is provided with an anti-skid convex ring, and the anti-skid convex ring is connected with the outer ring.

6. A needle valve hot runner assembly as defined in claim 1, wherein: The first heater is connected with the valve body, and the second heater is connected with the nozzle.

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