CN212147362U - Sprue bush assembly and hot runner injection molding system - Google Patents

Abstract

The utility model discloses a sprue bush assembly and a hot runner injection molding system, wherein the sprue bush assembly comprises a mold core and a sprue bush; a first accommodating cavity is formed in the mold core, and the sprue bush is arranged in the first accommodating cavity; a second accommodating cavity is formed in the sprue bush and used for accommodating the hot nozzle; the sprue bush comprises a sprue bush body and a sprue, and the sprue bush body is detachably connected with the sprue; the utility model discloses embodiment provides a runner cover subassembly, runner cover body wherein and runner can be dismantled the connection to can process runner cover body and runner respectively, optimized the whole processing of runner cover, the machining efficiency who has improved.

Description

Sprue bush assembly and hot runner injection molding system

Technical Field

The utility model relates to a hot runner technical field, in particular to sprue bush subassembly and hot runner injection molding system.

Background

At present, when the hot runner system mould is normally produced and injected, in order to shorten the product molding cycle, a cooling water path is needed to cool the mould at a sprue, a cooling sprue bush needs to be installed on a mould core plate, the trend of the cooling water path and the balance of the cooling effect need to be considered, the shape of nozzles of the hot runner system is different in size, and the shape of the mould cooling sprue bush needing to be installed is also different, so that the antirust performance of the material of the sprue bush per se is considered in the aspect of selecting and using the material of the sprue bush, and the material hardness and the strength of the sprue part of the sprue bush are also considered. The sprue bush has large processing difficulty coefficient, stock parts cannot be produced in batches, and the production and processing efficiency is extremely low.

Thus, the prior art has yet to be improved and enhanced.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing disadvantages of the prior art, an object of the present invention is to provide a sprue bush assembly and a hot runner injection molding system, which overcome the defect of sprue bush processing difficulty in the prior art.

The utility model provides a technical scheme that technical problem adopted as follows:

in a first aspect, an embodiment of the present invention provides a sprue bush assembly, including a mold core and a sprue bush; a first accommodating cavity is formed in the mold core, and the sprue bush is arranged in the first accommodating cavity; a second accommodating cavity is formed in the sprue bush and used for accommodating the hot nozzle; the sprue bush comprises a sprue bush body and a sprue, and the sprue bush body is detachably connected with the sprue.

As a further improved technical scheme, in the sprue bush assembly, the sprue bush body is in a circular truncated cone shape and comprises a top part, a middle part and a bottom part; the top diameter is greater than the middle diameter, which is greater than the bottom diameter.

As a further improvement, in the sprue bushing assembly, the bottom portion is threadedly connected to the sprue.

As a further improved technical scheme, in the sprue bush assembly, runners are arranged on two sides of the mold core, the runners are communicated with the first accommodating cavity, and the axis of the runners is perpendicular to the axis of the first accommodating cavity.

As a further improved technical scheme, in the sprue bush assembly, a first sealing ring is arranged at the contact position of the top and the die core, and a second sealing ring is arranged at the contact position of the bottom and the die core.

As a further improved technical scheme, in the sprue bush assembly, the sprue bush body is made of stainless steel.

As a further improvement, in the sprue bushing assembly, the sprue is made of mold steel.

In a first aspect, the embodiment of the present invention further provides a hot runner injection molding system, which includes a hot nozzle and a sprue bush assembly.

Compared with the prior art, the embodiment of the utility model provides a have following advantage:

the embodiment of the utility model provides a sprue bush component, which comprises a die core and a sprue bush; a first accommodating cavity is formed in the mold core, and the sprue bush is arranged in the first accommodating cavity; a second accommodating cavity is formed in the sprue bush and used for accommodating the hot nozzle; the sprue bush comprises a sprue bush body and a sprue, and the sprue bush body is detachably connected with the sprue; the utility model discloses embodiment provides a runner cover subassembly, runner cover body wherein and runner can be dismantled the connection to can process runner cover body and runner respectively, optimized the whole processing of runner cover, the machining efficiency who has improved.

Drawings

Fig. 1 is a schematic structural view of a sprue bush assembly provided by the present invention;

fig. 2 is a schematic view of the sprue bush assembly and the hot nozzle assembly provided by the present invention.

In the figure: 100. a mold core; 200. a sprue bush; 300. a first seal ring; 400. a second seal ring; 500. a hot nozzle; 110. a first accommodating chamber; 120. a flow channel; 210. a second accommodating chamber; 220. a sprue bush body; 230. a gate; 221. a top portion; 222. a middle part; 223. a bottom portion.

Detailed Description

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the following description of the present invention will refer to the accompanying drawings and illustrate embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the embodiments and claims, the terms "a" and "an" can mean "one or more" unless the article is specifically limited.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a sprue bush assembly according to the present invention; fig. 2 is a schematic view of the sprue bush assembly and the hot nozzle assembly provided by the present invention. The utility model provides a sprue bush subassembly includes: comprises a die core 100 and a sprue bush 200; a first accommodating cavity 110 is formed in the mold core 100, and the sprue bush 200 is arranged in the first accommodating cavity 110; a second accommodating cavity 210 is arranged in the sprue bush 200, and the second accommodating cavity 210 is used for placing the hot nozzle 500; the sprue bush 200 includes a sprue bush body 220 and a sprue 230, and the sprue bush body 220 is detachably connected to the sprue 230.

In the embodiment of the present invention, please continue to refer to fig. 1, the mold insert 100 is a cylinder, the sprue bush 200 is movably disposed in the first accommodating cavity 110, the first accommodating cavity 110 is matched with the sprue bush 200 in shape, wherein the second accommodating cavity 210 is used for placing the hot nozzle 500, and the second accommodating cavity 210 is through the sprue bush body 220 and the sprue 230, specifically, the second accommodating cavity 210 is integrally funnel-shaped, so as to facilitate the placement of the hot nozzle 500.

Specifically, the sprue bush body 220 is in a circular truncated cone shape, and the sprue bush body 220 comprises a top part 221, a middle part 222 and a bottom part 223; the top portion 221 has a diameter greater than the middle portion 222, and the middle portion 222 has a diameter greater than the bottom portion 223. The top 221, the middle 222 and the bottom 223 are located on the same axis, and the outer side surface of the bottom 223 is an arc surface, and a gap (for flowing cooling liquid) is left between the outer side surface and the first accommodating cavity 110.

Further, the bottom 223 is screwed with the gate 230, wherein the bottom 223 is provided with an internal thread (i.e., a lower end surface of the second receiving cavity 210), and an upper end of the gate 230 is provided with an external thread. Through threaded connection runner 230 and sprue bush body 220, runner 230 can be changed at any time after runner 230 loses efficacy or deforms, need not to change whole sprue bush 200 to convenient and fast's change runner 230 reduces because of the influence of changing runner 230 to production efficiency.

As a further scheme, flow passages 120 are disposed at two sides of the mold core 100, the flow passages 120 are communicated with the first accommodating cavity 110, and an axis of the flow passages 120 is perpendicular to an axis of the first accommodating cavity 110. The flow passage 120 is used for circulating a cooling liquid, so that the cooling liquid flows into the first accommodating cavity 110, thereby cooling the sprue bush 200. Specifically, the cooling liquid flows to the outer side of the gate 230, so that the gate 230 is cooled after the injection molding of the product is completed, thereby shortening the molding cycle of the product.

Correspondingly, a waterproof sealing ring is arranged at a corresponding contact position of the sprue bush 200 and the first accommodating cavity 110, specifically, a first sealing ring 300 is arranged at a contact position of the top part 221 and the mold core 100, and a second sealing ring 400 is arranged at a contact position of the bottom part 223 and the mold core 100.

Further, the sprue bush body 220 is made of stainless steel, and since the sprue bush body 220 needs to be in direct contact with the cooling liquid in the runner 120, a better corrosion prevention function is required, and optionally, 304 stainless steel or other corrosion-resistant materials can be used.

Furthermore, the gate 230 is made of a material, wherein the gate 230 needs to be in direct contact with the hot nozzle 500, and the gate 230 is easily deformed by the high temperature attached to the molten rubber in the hot nozzle 500, so that the gate 230 can be made of a high-strength steel material, such as a die steel with the brand number of SKD 61. It should be understood that the above-mentioned steel material is merely exemplary in designation and is not limited to the material of the gate 230 or the gate sleeve body 220.

It is worth mentioning that, traditional runner cover 200 need compromise anticorrosion and high strength high temperature resistant because of integrated into one piece's reason in the aspect of the selected material, consequently the selected material all adopts special and expensive material, and the utility model discloses an adopt split type with runner cover 200, constitute by runner cover body 220 and runner 230, not only be convenient for the swift change of runner 230 when runner 230 damages, can choose for use two kinds of different materials to make runner cover body 220 and runner 230 respectively in addition during manufacturing, effectively reduced the holistic manufacturing cost of runner cover 200 when not influencing the whole working property of runner cover 200, provided convenience for the producer.

Secondly, the sprue bush body 220 and the sprue 230 are manufactured separately, so that the machining difficulty is reduced, the machining efficiency is improved, and meanwhile, the sprue bush body 220 and the sprue 230 can be standardized or serialized, and the sprue bush 200 can be used and replaced more conveniently.

The operating principle of the sprue bush 200 assembly of the present embodiment is:

a second receiving chamber 210 for receiving a hot nozzle 500 is further provided in the sprue bush 200 by providing the first receiving chamber 110 in the mold core 100 to receive the sprue bush 200, and the sprue bush 200 includes a sprue bush body 220 and a gate 230 detachably coupled thereto. The sprue bush 200 is detachably connected, so that the sprue bush 200 is simpler to process and manufacture, and the production efficiency of the sprue bush 200 is greatly improved.

Example two:

the utility model discloses on the basis of above-mentioned runner cover subassembly, still disclose a hot runner injection molding system, wherein, chew with foretell runner cover subassembly including the heat. It should be understood that the hot runner injection molding system of course further includes other structures, which are all in the prior art and will not be described herein.

In summary, the utility model provides a sprue bush component, which comprises a mould core and a sprue bush; a first accommodating cavity is formed in the mold core, and the sprue bush is arranged in the first accommodating cavity; a second accommodating cavity is formed in the sprue bush and used for accommodating the hot nozzle; the sprue bush comprises a sprue bush body and a sprue, and the sprue bush body is detachably connected with the sprue; the utility model discloses embodiment provides a runner cover subassembly, runner cover body wherein and runner can be dismantled the connection to can process runner cover body and runner respectively, optimized the whole processing of runner cover, the machining efficiency who has improved.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

Claims (8)

1. A sprue bush assembly is characterized by comprising a die core and a sprue bush; a first accommodating cavity is formed in the mold core, and the sprue bush is arranged in the first accommodating cavity; a second accommodating cavity is formed in the sprue bush and used for accommodating the hot nozzle; the sprue bush comprises a sprue bush body and a sprue, and the sprue bush body is detachably connected with the sprue.

2. The sprue bushing assembly of claim 1 wherein the sprue bushing body is frustoconical, the sprue bushing body including a top portion, a middle portion and a bottom portion; the top diameter is greater than the middle diameter, which is greater than the bottom diameter.

3. The sprue bushing assembly of claim 2 wherein the bottom portion is threadably connected to the sprue.

4. The sprue bushing assembly according to claim 3, wherein runners are disposed on two sides of the mold insert, the runners are communicated with the first receiving cavity, and an axis of the runners is perpendicular to an axis of the first receiving cavity.

5. The sprue bushing assembly of claim 2 wherein a first seal ring is disposed at a location where the top portion contacts the mold insert and a second seal ring is disposed at a location where the bottom portion contacts the mold insert.

6. The sprue bushing assembly of claim 2, wherein the sprue bushing body is stainless steel.

7. The sprue bushing assembly of claim 3 wherein the sprue is mold steel.

8. A hot runner injection molding system comprising a heat nozzle, further comprising the sprue bushing assembly of any one of claims 1-7.

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