CN213830128U

CN213830128U - Hot runner mechanism for injection mold

Info

Publication number: CN213830128U
Application number: CN202022266517.9U
Authority: CN
Inventors: 罗增强
Original assignee: Liuzhou Jingte Auto Parts Manufacturing Co ltd
Current assignee: Liuzhou Jingte Auto Parts Manufacturing Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-07-30
Anticipated expiration: 2030-10-13

Abstract

The utility model relates to a hot runner technical field specifically is a hot runner mechanism for injection mold, including injection machine nozzle and front mould, the position circle has been cup jointed to the outside of injection machine nozzle, the below fixedly connected with panel of position circle, the below fixedly connected with heat flow board of injection machine nozzle, heat flow board includes the main part, the inside of main part is fixed and has been seted up the subchannel, the outer wall fixedly connected with heat preservation of main part, the top fixedly connected with graphite hot plate of main part, the top fixedly connected with electrode bolt of graphite hot plate, the lower fixed surface of main part is provided with the locating hole, the hot sprue of the below fixedly connected with of heat flow board. The utility model discloses set up the graphite hot plate, can realize keeping the inside temperature of thermal current board, and then realize keeping the plastic pellet of molten condition, further improve its sealed effect through toper sealing device in addition.

Description

Hot runner mechanism for injection mold

Technical Field

The utility model relates to a hot runner technical field specifically is a hot runner mechanism for injection mold.

Background

The hot runner is a heating component system used in an injection mould and used for injecting melted plastic particles into a cavity of the mould, the hot runner mould is a brand-new structure which heats a pouring channel and a flow channel of a traditional mould or a three-plate mould, and does not need to take out the flow channel and the pouring channel during each forming, the hot runner ensures that the plastic of the flow channel and the pouring gate keeps a molten state by a heating method, and because a heating rod and a heating ring are arranged near or in the center of the flow channel, the whole flow channel from a nozzle outlet of an injection molding machine to the pouring gate is in a high-temperature state, so that the plastic in the flow channel keeps molten.

However, in the use process of the existing hot runner mechanism, especially in the use process of the internal hot flow plate, the heat inside the flow channel can be absorbed, so that the qualification of the molten state of the hot runner mechanism is affected, the internal temperature of the hot runner mechanism is reduced, and the use effect of the hot runner mechanism is further reduced.

Therefore, it is necessary to provide a hot runner mechanism for an injection mold to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hot runner mechanism for injection mold to provide out the hot flow board and absorb the heat and the sealed poor problem of effect of hot purt mouth nozzle among the above-mentioned background art of solution.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a hot runner mechanism for injection mold, includes injection machine nozzle and front mould, the position circle has been cup jointed to the outside of injection machine nozzle, the below fixedly connected with panel of position circle, the below fixedly connected with heat flow board of injection machine nozzle, heat flow board includes the main part, the inside of main part is fixed and has been seted up the subchannel, the outer wall fixedly connected with heat preservation of main part, the top fixedly connected with graphite hot plate of main part, the top fixedly connected with electrode bolt of graphite hot plate, the lower fixed surface of main part is provided with the locating hole, the hot purt mouth of below fixedly connected with of heat flow board, the below of hot purt mouth is provided with the front mould, the top of front mould is provided with the cooling water hole.

Further, the heat flow plate is a rectangular structure, the sub-channel is an inverted Y-shaped structure, the heat flow plate is of a symmetrical structure about the center of the sub-channel, the top of the graphite heating plate is provided with a threaded hole and is in threaded connection with the electrode bolt, an electrode is fixedly connected between the electrode bolt and the graphite heating plate, and the upper end face and the lower end face of the heat flow plate are both connected with heat insulation cushion blocks.

Further, hot purt mouth includes the body, the inside of body is provided with the drainage way, the right side of body is provided with temperature sensor, temperature sensor's below is provided with the heating collar lead wire, the left side fixedly connected with zone of heating collar lead wire, the outside fixedly connected with shell of zone of heating, the top fixedly connected with holding ring of shell, the below of drainage way is provided with the reposition of redundant personnel shuttle, the outside of reposition of redundant personnel shuttle is provided with fixed cover, the inside of fixed cover is provided with the needle, the bottom fixedly connected with sealing plug of needle, the inner wall of body is provided with the sealing member, the bottom of body is provided with the nozzle.

Furthermore, hot sprue bushing is provided with two sets of, and corresponds the position of subchannel respectively and install fixedly, the top of hot sprue bushing is the external screw thread form, and is threaded connection with the connected mode of hot flow board.

Further, the structure of drainage way is similar with the structure of subchannel, and both interconnect, temperature sensor's left end is in the bottom position of body, the zone of heating is the annular structure.

Further, the outside of needle is provided with the spring, and is in the inside of fixed cover, and both are plug-in connection, the sealing plug is the toper structure, the surface end of sealing member is the slope form, and mutually supports with the sealing plug.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an add the graphite hot plate in the inside of thermal current board, can realize the heating to the inside runner of thermal current board, and then guarantee its inside temperature to guarantee plastic granules's molten state, the thermal loss appears when avoiding it to pass through the thermal current board, cause the influence to its molten state, thereby influence whole thermal current process.

2. The utility model discloses a sealed department to current needle bottom improves, realizes the sealed of nozzle through mutually supporting of toper sealing plug and sealing member, and can its sealed effect of effectual improvement, and through the pulling of closing of sealing plug, can drive the resorption of bottom, avoids the condition appearance that wire drawing and leakage appear in its nozzle department.

Drawings

Fig. 1 is a schematic view of a front view cross-sectional structure of the present invention;

fig. 2 is a schematic view of the heat flow plate of the present invention;

FIG. 3 is a schematic front view of the hot sprue bushing of the present invention;

fig. 4 is an enlarged schematic view of a structure in fig. 3 according to the present invention.

In the figure: 1. a nozzle of an injection machine; 2. positioning rings; 3. a panel; 4. a heat flow plate; 41. a main body; 42. a shunt channel; 43. a graphite heating plate; 44. positioning holes; 45. a heat-insulating layer; 46. an electrode bolt; 5. a hot sprue bushing; 51. a body; 52. a temperature sensor; 53. heating a coil lead; 54. a heating layer; 55. a housing; 56. a drainage duct; 57. a positioning ring; 58. a shunt shuttle; 59. fixing a sleeve; 510. a valve needle; 511. a sealing plug; 512. a seal member; 513. a nozzle; 6. a front mold; 7. and cooling water holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1-4, the present invention provides an embodiment:

a hot runner mechanism for an injection mold comprises an injection machine nozzle 1 and a front mold 6, a locating ring 2 is sleeved outside the injection machine nozzle 1, a panel 3 is fixedly connected to the lower part of the locating ring 2, a hot flow plate 4 is fixedly connected to the lower part of the injection machine nozzle 1, the hot flow plate 4 comprises a main body 41, a branch flow channel 42 is fixedly arranged inside the main body 41, a heat preservation layer 45 is fixedly connected to the outer wall of the main body 41, a graphite heating plate 43 is fixedly connected to the upper part of the main body 41, an electrode bolt 46 is fixedly connected to the top of the graphite heating plate 43, a locating hole 44 is fixedly arranged on the lower surface of the main body 41, heating treatment of the interior of the main body can be realized through the arrangement of the structure, through treatment of an electrode above the graphite heating plate 43, heating treatment of the graphite heating plate 43 can be realized, and heating treatment of the branch flow channel 42 can be realized, thereby ensuring the normality of plastic particles in the internal melting state, avoid it to appear condensing, reduce the temperature, the below fixedly connected with heat sprue 5 of heat flow board 4, the below of heat sprue 5 is provided with front mould 6, and the top of front mould 6 is provided with cooling water hole 7.

Heat flow plate 4 is the rectangle structure, subchannel 42 is invertd Y shape structure, the realization reposition of redundant personnel is used, heat flow plate 4 is symmetrical structure about subchannel 42's center, graphite hot plate 43's top is provided with the screw hole, and be threaded connection with electrode bolt 46's connection, fixedly connected with electrode between electrode bolt 46 and the graphite hot plate 43, an energy that is used for graphite hot plate 43 to generate heat provides, heat flow plate 4's upper and lower terminal surface all is connected with thermal-insulated cushion, avoid it to cause thermal loss.

The hot sprue bushing 5 comprises a body 51, a flow guide 56 is arranged inside the body 51, a temperature sensor 52 is arranged on the right side of the body 51, a heating coil lead 53 is arranged below the temperature sensor 52, a left side fixedly connected with heating layer 54 of the heating coil lead 53, an outer fixedly connected with shell 55 of the heating layer 54, a positioning ring 57 fixedly connected with the top of the shell 55, a shunt shuttle 58 is arranged below the flow guide 56, a fixing sleeve 59 is arranged outside the shunt shuttle 58, a valve needle 510 is arranged inside the fixing sleeve 59, a bottom fixedly connected with sealing plug 511 of the valve needle 510, a sealing element 512 is arranged on the inner wall of the body 51, a nozzle 513 is arranged at the bottom of the body 51, heating treatment on the inside can be realized through arrangement of the structure, and a holding effect on a plastic molten state is realized.

Hot sprue 5 is provided with two sets ofly, and it is fixed to correspond the position of subchannel 42 respectively to install, setting through two sets of hot sprue 5, can accelerate its injection speed, improve mould production efficiency, the top of hot sprue 5 is the external screw thread form, and be threaded connection with the connected mode of hot flow plate 4, the installation is simple, high durability and convenient use, the structure of drainage way 56 is similar with the structure of subchannel 42, and both interconnect, temperature sensor 52's left end is in the bottom position of body 51, a detection for the bottom temperature, when its temperature is less than the predetermined value, can feed back the heat treatment that further realizes zone of heating 54, thereby guarantee the state of melting form plastic granules, zone of heating 54 is the ring loop configuration.

The outside of needle 510 is provided with the spring, and be in the inside of fixed cover 59, both are plug-in connection, rely on the switch of spring and the balanced control needle 510 of injection pressure, the assembly debugging is simple with the maintenance, sealing plug 511 is the toper structure, the surface end of sealing member 512 is the slope form, and mutually support with sealing plug 511, both connect through the conical surface and seal, can improve its sealed effect, in addition through the formula structure of drawing conversely, can be when sealing, the realization is carried out the resorption to the plastics melt of sealing member 512 department, avoid appearing leaking and wire drawing.

The working principle is as follows: the utility model discloses when using, at first interconnect this subassembly with the injecting glue machine, further can realize the on-off control to needle 510 through the interact of its injection pressure and spring, when processing, the inside that the plastic pellet of its molten state enters into heat flow plate 4 through injection machine nozzle 1, further get into the inside of hot squirt mouth 5 through the reposition of redundant personnel of subchannel 42, can realize the heating to graphite heating board 43 through the circular telegram of subchannel 42 top electrode simultaneously, thereby guarantee the molten state of the plastic pellet of subchannel 42 inside, avoid it to appear thermal loss, lead to it to appear condensing, further continue to flow through drainage way 56, further through the overhanging of needle 510, realize the separation of sealing plug 511 and sealing member 512, thereby realize fluidic through, when mould processing finishes, realize the pull-back of needle 510 through the reduction cooperation spring of injection pressure, the sealing between the sealing plug 511 and the sealing element 512 is further realized, so that the nozzle 513 is sealed, the sealing effect of the conical structure is improved, and the leakage and the like are avoided.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a hot runner mechanism for injection mold, includes injection machine nozzle (1) and front mould (6), its characterized in that: a positioning ring (2) is sleeved outside the injection nozzle (1), a panel (3) is fixedly connected below the positioning ring (2), a heat flow plate (4) is fixedly connected below the injection machine nozzle (1), the heat flow plate (4) comprises a main body (41), a sub-runner (42) is fixedly arranged inside the main body (41), the outer wall of the main body (41) is fixedly connected with a heat-insulating layer (45), a graphite heating plate (43) is fixedly connected above the main body (41), an electrode bolt (46) is fixedly connected with the top of the graphite heating plate (43), the lower surface of the main body (41) is fixedly provided with a positioning hole (44), the lower part of the heat flow plate (4) is fixedly connected with a heat squirt nozzle (5), a front die (6) is arranged below the hot sprue bushing (5), and a cooling water hole (7) is arranged above the front die (6).

2. The hot-runner mechanism for an injection mold according to claim 1, wherein: heat flow board (4) are the rectangle structure, subchannel (42) are invertd Y shape structure, heat flow board (4) are symmetrical structure about the center of subchannel (42), the top of graphite hot plate (43) is provided with the screw hole, and is threaded connection with being connected of electrode bolt (46), fixedly connected with electrode between electrode bolt (46) and graphite hot plate (43), the upper and lower terminal surface of heat flow board (4) all is connected with thermal-insulated cushion.

3. The hot-runner mechanism for an injection mold according to claim 1, wherein: the hot squirt nozzle (5) comprises a body (51), a drainage channel (56) is arranged in the body (51), a temperature sensor (52) is arranged on the right side of the body (51), a heating coil lead wire (53) is arranged below the temperature sensor (52), a heating layer (54) is fixedly connected to the left side of the heating coil lead (53), a shell (55) is fixedly connected to the outer part of the heating layer (54), the top of the shell (55) is fixedly connected with a positioning ring (57), a shunt shuttle (58) is arranged below the drainage channel (56), a fixed sleeve (59) is arranged outside the shunting shuttle (58), a valve needle (510) is arranged inside the fixed sleeve (59), the bottom of the valve needle (510) is fixedly connected with a sealing plug (511), the inner wall of the body (51) is provided with a sealing element (512), and the bottom of the body (51) is provided with a nozzle (513).

4. The hot-runner mechanism for an injection mold according to claim 3, wherein: the hot sprue bushing is characterized in that two groups of hot sprue bushings (5) are arranged and are respectively installed and fixed at positions corresponding to the sub-runners (42), and the top of each hot sprue bushing (5) is in an external thread shape and is in threaded connection with the hot flow plate (4).

5. The hot-runner mechanism for an injection mold according to claim 3, wherein: the structure of drainage way (56) is similar with the structure of subchannel (42), and both interconnect, the bottom position of body (51) is located at the left end of temperature sensor (52), heating layer (54) are the ring structure.

6. The hot-runner mechanism for an injection mold according to claim 3, wherein: the outside of needle (510) is provided with the spring, and is located the inside of fixed cover (59), and both are plug-in connection, sealing plug (511) are the toper structure, the surperficial terminal surface of sealing member (512) is the slope form, and mutually supports with sealing plug (511).