CN215242565U

CN215242565U - Temperature-adjusting and flow-dividing device of hot runner nozzle

Info

Publication number: CN215242565U
Application number: CN202122858490.7U
Authority: CN
Inventors: 刘斌
Original assignee: Tianjin Jinglida Precision Mould Co ltd
Current assignee: Tianjin Jinglida Precision Mould Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2021-12-21
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses a temperature adjustment diverging device of hot runner nozzle belongs to injection mold accessory technical field, including injecting glue mouth, heating mounting panel, column mold insert, hot runner nozzle and water-cooling temperature adjustment board, the injecting glue mouth sets up on the top of heating mounting panel, and vertical the inserting is equipped with a plurality of column mold inserts in the heating mounting panel, a plurality of column mold inserts and a plurality of hot runner nozzle one-to-one fixed intercommunication, and a plurality of hot runner nozzle are fixed to be inserted and are established in the water-cooling temperature adjustment board, and the water-cooling temperature adjustment board is fixed with the heating mounting panel spiro union. The hot runner nozzle is specifically used, molten plastic enters the heating mounting plate through the glue injection port to be heated, then flows into the hot runner nozzle through the columnar insert, is cooled and adjusted through the water-cooling temperature adjusting plate, and then is injected into the mold. The utility model discloses can effectively improve the efficiency of moulding plastics, solve among the prior art because traditional mould sets up the stripper plate and the production cycle that leads to is long and the problem of extravagant material.

Description

Temperature-adjusting and flow-dividing device of hot runner nozzle

Technical Field

The utility model relates to an injection mold accessory technical field, concretely relates to temperature adjustment diverging device of hot runner nozzle.

Background

The hot runner is used in injection mold, and the plastic pellet that will melt pours into the heating element system in the die cavity of mould, compares traditional mould or three-plate mould, and the mould that adopts the hot runner technique can directly pour the material into the die cavity of mould into through the hot runner nozzle during, consequently need not to set up the stripper plate again on original mould, can not produce the stub bar after the finished piece shaping naturally yet, consequently can show the shaping cycle of shortening the product, improve equipment efficiency. Therefore, the plastic melt transmitted from the main runner is uniformly distributed to the nozzles of each injection point by using the hot runner flow distribution plate, so that the plastic flows in a balanced manner, and the cavity of the mold is uniformly filled.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a hot runner nozzle's diverging device that adjusts temperature to solve among the prior art because traditional mould sets up the problem of production cycle length and extravagant material that the stripper plate leads to.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

the utility model discloses a temperature adjustment diverging device of hot runner nozzle, including injecting glue mouth, heating mounting panel, column mold insert, hot runner nozzle and water-cooling temperature adjustment board, the injecting glue mouth sets up the top at the heating mounting panel, vertical the inserting is equipped with a plurality of column mold inserts in the heating mounting panel, and is a plurality of column mold insert and a plurality of hot runner nozzle one-to-one intercommunication, it is a plurality of hot runner nozzle is fixed to be inserted and is established in the water-cooling temperature adjustment board, the water-cooling temperature adjustment board is fixed with the heating mounting panel spiro union.

Further, the heating mounting plate comprises a metal heat-conducting plate, a thermal resistance wire, insert jacks, a main runner and positioning pins, the glue injection port is formed in the top end of the metal heat-conducting plate, the thermal resistance wire is inserted into the metal heat-conducting plate, the metal heat-conducting plate is vertically provided with the insert jacks, the positioning pins are installed in the insert jacks, the positioning pins abut against the columnar insert, and the insert jacks are communicated with the main runner.

Furthermore, the columnar insert comprises a feeding insert and a switching insert, the corresponding feeding insert and the corresponding switching insert are inserted into the insert insertion holes, the feeding insert and the switching insert are both communicated with the main runner, and the feeding insert is fixedly communicated with the hot runner nozzle.

Furthermore, the feeding insert comprises an upper fixing nut, a positioning groove, a metal cylinder and a lower fixing cap, the metal heat-conducting plate is abutted to the upper fixing nut, the upper fixing nut is fixed to the upper end of the metal cylinder in a threaded manner, the lower end of the metal cylinder is fixed to the lower fixing cap in a threaded manner, the positioning groove is formed in the side face of the metal cylinder, and a feeding hole is formed in the metal cylinder.

Furthermore, the structure of the switching insert is similar to that of the feeding insert, the outlet and the inlet of the feeding hole of the switching insert are both arranged on the side surface, the outlet of the feeding hole of the feeding insert is arranged on the end surface, and the inlet of the feeding hole of the feeding insert is arranged on the side surface.

Further, the water-cooling temperature adjusting plate comprises a rubber cushion block, a water-cooling adjusting channel, a connecting bolt and a cooling fixing plate, the hot runner nozzle is fixedly inserted into the cooling fixing plate, the water-cooling adjusting channel is arranged in the cooling fixing plate, the top of the cooling fixing plate is fixed with the connecting bolt in a threaded mode, and the connecting bolt fixes the rubber cushion block at the top of the cooling fixing plate.

Further, the shape of the main flow channel is S-shaped or Y-shaped.

Furthermore, temperature sensors are arranged on the metal heat-conducting plate and the water-cooling temperature-regulating plate.

The utility model has the advantages of as follows:

the utility model provides a hot runner nozzle's diverging device that adjusts temperature, after molten plastics got into the sprue through the injecting glue mouth, plastics thermally equivalent and viscosity reduced, traditional mould of comparing, the invention creates the mode through the external heating, heats molten plastics to molten plastics can fully melt, reduces the fluid resistance, and the problem of leaking appears because of the material viscosity is low excessively in rethread water-cooling temperature adjustment board cooling regulation, is avoided. Compared with the prior art, the flow distribution plate and the stripper plate are not required to be arranged on the injection mold, so that the effect of simplifying the structure of the mold is achieved, and the solidified stub bar is avoided, so that the problem of material waste is solved, the forming time of a product is shortened, and the production efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a top view of a temperature adjustment and distribution device of a hot runner nozzle having an S-shaped main flow passage according to the present invention;

fig. 2 is a perspective view of a feeding insert of the temperature adjusting and distributing device of the hot runner nozzle provided by the present invention;

fig. 3 is a top view of the temperature adjustment and distribution device of the hot runner nozzle with the Y-shaped main flow passage provided by the present invention;

fig. 4 is a B-direction cross sectional view of the temperature adjusting and distributing device of the hot runner nozzle with the Y-shaped main flow passage provided by the present invention;

fig. 5 is a sectional view of the temperature adjusting and distributing device of the hot runner nozzle having the S-shaped main flow passage according to the present invention;

fig. 6 is a side view of a transfer insert of the temperature adjusting and distributing device of the hot runner nozzle according to the present invention;

in the figure: 1, injecting glue; 2 heating the mounting plate; 21 a metal heat-conducting plate; 22 thermal resistance wires; 23 inserting holes of the inserts; 24 a primary flow passage; 25 positioning pins; 3, a columnar insert; 31 feeding the insert; 311 fixing a nut; 312 positioning grooves; 313 a metal cylinder; 314 lower fixing cap; 32, transferring the insert; 4 a hot runner nozzle; 5, water cooling and temperature adjusting plate; 51 rubber cushion blocks; 52 water-cooling the regulating channel; 53 connecting bolts; 54 cooling the fixed plate.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As in fig. 1-6, the utility model discloses a hot runner nozzle's diverging device that adjusts temperature, including injecting glue mouth 1, heating mounting panel 2, column mold insert 3, hot runner nozzle 4 and water-cooling temperature control board 5, injecting glue mouth 1 sets up on the top of heating mounting panel 2, and molten plastic flows into sprue 24 through injecting glue mouth 1. A plurality of columnar inserts 3 are vertically inserted into the heating mounting plate 2, so that the process difficulty of processing the main runner 24 is reduced. Due to the need to retain the molten plastic in the heating mounting plate 2 for a period of time, it is necessary that the main flow channel 24 has a length such that the molten plastic can be sufficiently heated, thereby reducing the viscosity of the flow of the material. The plurality of columnar inserts 3 are fixedly communicated with the plurality of hot runner nozzles 4 one by one, so that molten plastic can be directly injected into a mold cavity through the hot runner nozzles 4, and the material is solidified and molded.

The hot runner nozzles 4 are fixedly inserted into the water-cooling temperature adjusting plate 5, the water-cooling temperature adjusting plate 5 is fixedly connected with the heating mounting plate 2 in a threaded mode, and the water-cooling temperature adjusting plate 5 absorbs heat of the hot runner nozzles 4 in a water-cooling mode to reduce the temperature of the molten plastic, so that the physical characteristics of the molten plastic are controlled, the smaller injection pressure can be used, and the problem of deformation of a thin-wall product after molding is obviously solved. And because adopt hot runner nozzle 4 direct injection material, consequently design mould structural, just also need not to set up stripper plate and flow distribution plate on the mould, also can not produce the stub bar that forms because of the material cooling solidifies, play the effect of shortening man-hour from this, avoid causing the extravagant problem of material simultaneously.

According to the utility model provides a specific embodiment, heating mounting panel 2 includes metal heat-conducting plate 21, hot resistance line 22, mold insert jack 23, sprue 24 and locating pin 25, and injecting glue mouth 1 sets up on metal heat-conducting plate 21 top, and hot resistance line 22 inserts and establishes in metal heat-conducting plate 22 to make metal heat-conducting plate temperature evenly rise, from this with the material thermally equivalent in the sprue 24, reduce the viscidity of melting material and accelerate its flow speed. A plurality of insert jacks 23 are vertically arranged on the metal heat conducting plate 21, positioning pins 25 are inserted into the insert jacks 23, and the positioning pins 25 abut against the columnar inserts 3 to prevent the columnar inserts 3 from rotating. The insert jacks 23 are communicated with the main runner 24, and the cylindrical insert 3 is arranged to reduce the difficulty of machining the main runner, so that molten plastic can flow along a fixed route by adopting a plug-in combination mode, the residence time of the material in the metal heat-conducting plate 21 is prolonged, the material is heated uniformly, and the material flows out from the hot runner nozzles 4 uniformly.

According to the utility model provides a specific embodiment, column mold insert 3 includes feed mold insert 31 and switching mold insert 32, and a plurality of insert jack 23 interpolations are equipped with corresponding feed mold insert 31 and switching mold insert 32, and feed mold insert 31 and switching mold insert 32 all communicate with main flow channel 24, and feed mold insert 31 and the fixed intercommunication of hot runner nozzle 4. The structure of the transfer insert 32 is similar to that of the feeding insert 31, and the transfer insert 32 is different from that of the feeding insert 31 in that the outlet and the inlet of the feeding hole of the transfer insert 32 are both arranged on the side surface, the outlet of the feeding hole of the feeding insert 31 is arranged on the end surface, and the inlet of the feeding hole of the feeding insert 31 is arranged on the side surface. The feeding insert 31 is provided to allow the material to be discharged from the hot runner nozzle 4, and the transferring insert 32 is provided to reduce the difficulty of the process of processing the main runner 24, so that the molten material can flow along a fixed route, and the time for the material to stay in the metal heat-conducting plate 21 is prolonged, thereby achieving the purpose of sufficiently heating the material.

According to the utility model provides a specific embodiment, feeding mold insert 31 includes fixing nut 311, constant head tank 312, metal cylinder 313 and lower locking cap 314, metal heat-conducting plate 21 offsets with last fixing nut 311, it fixes in metal cylinder 313 upper end to go up the locking nut 311 spiro union, metal cylinder 313 lower extreme is fixed with lower locking cap 314 spiro union, fix metal cylinder 313 in insert jack 23 from this, and the side of metal cylinder 313 is provided with constant head tank 312, constant head tank 312 offsets with locating pin 25, prevent from this that metal cylinder 313 from rotating in insert jack 23, the inside feed hole that is provided with of metal cylinder 313, feed hole and sprue 24 intercommunication, make molten plastics can fully flow in sprue 24.

According to the utility model provides a concrete embodiment, water-cooling temperature regulation board 5 includes rubber cushion 51, water-cooling regulation passageway 52, connecting bolt 53 and cooling fixed plate 54, and hot runner nozzle 4 is fixed to be inserted and is established in cooling fixed plate 54, is provided with water-cooling regulation passageway 52 in the cooling fixed plate 54, and cooling fixed plate 54 top is fixed with connecting bolt 53 spiro union, and connecting bolt 53 fixes rubber cushion 51 at cooling fixed plate 54 top. The water-cooled regulating passage 52 is filled with cooling liquid, which can absorb the heat of the hot runner nozzle 4, and then reduce the temperature of the molten plastic. The viscosity of the molten plastic with the reduced temperature is improved, so that the problem that the molten plastic flows out of the hot runner nozzle 4 too fast to cause melt leakage and injection failure is solved.

According to the utility model provides a specific embodiment, the shape of sprue 24 is S type (like fig. 1) or Y type (like fig. 4), and S type sprue route is longer, is fit for injecting into and melts the slower material of speed, and Y type sprue route is shorter, is fit for injecting into and melts the faster material of speed, can select according to the physical properties of different materials from this to improve diverging device' S commonality.

According to the utility model provides a specific embodiment all is provided with temperature sensor on metal heat-conducting plate 21 and the water-cooling temperature regulation board 5, from this through observing temperature variation, just can judge the condition of material in the device to whether the work can be opened to decision hot runner nozzle 4.

The utility model discloses use as follows:

the utility model discloses a temperature adjusting and distributing device of a hot runner nozzle, when the device is used specifically, firstly, a melting material enters a main runner 24 through a glue injection port 1, a thermal resistance wire 22 is electrified to heat a metal heat conducting plate 21, so that the melting material in the main runner 24 is further melted, and the viscosity of the melting material is reduced; then the molten material enters the hot runner nozzle 4 through the feeding insert 31, and the cooling liquid is introduced into the water-cooling adjusting channel 52 to absorb the heat of the hot runner nozzle 4, so as to adjust the temperature of the molten material; finally, the viscosity of the molten material, now at a reduced temperature, is increased again and injected directly into the mould cavity from the hot runner nozzle 4.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a temperature adjustment diverging device of hot runner nozzle, its characterized in that, includes injecting glue mouth (1), heating mounting panel (2), column mold insert (3), hot runner nozzle (4) and water-cooling temperature control board (5), injecting glue mouth (1) sets up on the top of heating mounting panel (2), vertically insert in heating mounting panel (2) and be equipped with a plurality of column mold inserts (3), and is a plurality of column mold insert (3) and a plurality of hot runner nozzle (4) fixed intercommunication one by one, a plurality of hot runner nozzle (4) are fixed to be inserted and are established in water-cooling temperature control board (5), water-cooling temperature control board (5) and heating mounting panel (2) spiro union are fixed.

2. The temperature-adjusting and flow-dividing device of the hot runner nozzle according to claim 1, wherein the heating mounting plate (2) comprises a metal heat-conducting plate (21), a thermal resistance wire (22), insert insertion holes (23), a main runner (24) and positioning pins (25), the glue injection port (1) is disposed at the top end of the metal heat-conducting plate (21), the thermal resistance wire (22) is inserted into the metal heat-conducting plate (21), a plurality of insert insertion holes (23) are vertically disposed on the metal heat-conducting plate (21), the positioning pins (25) are disposed in the insert insertion holes (23), the positioning pins (25) abut against the columnar insert (3), and the insert insertion holes (23) are communicated with the main runner (24).

3. The temperature-regulating splitting device for hot runner nozzles according to claim 2, characterized in that the insert cylinder (3) comprises a feed insert (31) and a transfer insert (32), the insert receptacles (23) are provided with the corresponding feed insert (31) and transfer insert (32) inserted therein, both the feed insert (31) and transfer insert (32) are in communication with the main runner (24), and the feed insert (31) is in fixed communication with the hot runner nozzle (4).

4. The temperature-adjusting and flow-dividing device of the hot runner nozzle according to claim 3, wherein the feeding insert (31) comprises an upper fixing nut (311), a positioning groove (312), a metal cylinder (313) and a lower fixing cap (314), the metal heat-conducting plate (21) is abutted against the upper fixing nut (311), the upper fixing nut (311) is fixed at the upper end of the metal cylinder (313) in a threaded manner, the lower end of the metal cylinder (313) is fixed with the lower fixing cap (314) in a threaded manner, the positioning groove (312) is arranged on the side surface of the metal cylinder (313), and a feeding hole is arranged in the metal cylinder (313).

5. The temperature-regulating tapping device for hot runner nozzles according to claim 4, characterized in that the adapter insert (32) is of similar construction to the feed insert (31), the feed hole outlet and inlet of the adapter insert (32) being arranged laterally, the feed hole outlet of the feed insert (31) being arranged laterally, and the feed hole inlet of the feed insert (31) being arranged laterally.

6. The temperature-adjusting and flow-dividing device of the hot runner nozzle as claimed in claim 5, wherein the water-cooling temperature-adjusting plate (5) comprises a rubber cushion block (51), a water-cooling adjusting channel (52), a connecting bolt (53) and a temperature-reducing fixing plate (54), the hot runner nozzle (4) is fixedly inserted into the temperature-reducing fixing plate (54), the water-cooling adjusting channel (52) is arranged in the temperature-reducing fixing plate (54), the top of the temperature-reducing fixing plate (54) is fixed with the connecting bolt (53) in a threaded manner, and the connecting bolt (53) fixes the rubber cushion block (51) on the top of the temperature-reducing fixing plate (54).

7. The temperature-regulating tapping device for hot runner nozzles according to claim 6, characterized in that the shape of the main flow channel (24) is S-shaped or Y-shaped.

8. The temperature-regulating and flow-dividing device of the hot runner nozzle as claimed in claim 7, wherein the metal heat-conducting plate (21) and the water-cooling temperature-regulating plate (5) are both provided with temperature sensors.