CN216683152U

CN216683152U - Hot runner system

Info

Publication number: CN216683152U
Application number: CN202123174118.0U
Authority: CN
Inventors: 李象烈
Original assignee: Yudo Suzhou Hot Runner Systems Co Ltd
Current assignee: Yudo Suzhou Hot Runner Systems Co Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-06-07
Anticipated expiration: 2031-12-16

Abstract

The utility model particularly relates to a hot runner system which comprises a flow distribution plate, an injection nozzle fixed on the flow distribution plate, a fixing piece sleeved on the outer wall of the injection nozzle and a fastening piece for fixing the fixing piece on the flow distribution plate, wherein an anti-rotation screwing part is formed on the outer peripheral wall of the injection nozzle, and a matching structure matched with the anti-rotation screwing part is formed on the fixing piece. The injection nozzle is limited and matched with the matching structure through the anti-rotation screwing part of the injection nozzle, and the fixing part is fixed on the flow distribution plate through the fastening part, so that the problem of glue leakage at the joint of the flow distribution plate when the injection nozzle of the hot runner system is installed on the flow distribution plate is solved, the structural stability of the hot runner system is improved, and the injection nozzle has the advantages of firm structure and convenience in installation.

Description

Hot runner system

Technical Field

The utility model relates to the technical field of hot runner molds, in particular to a hot runner system which is firm in structure and convenient to install.

Background

At present, the injection mold generally adopted in the injection molding industry is a hot runner injection mold, compared with a common mold, the quality of a plastic product injected through a hot runner system is higher, and the hot runner system has the advantages of raw material saving, production efficiency improvement, high automation degree and the like.

At present, the connected mode between hot runner system's injection nozzle and the flow distribution plate is threaded connection mostly, and at hot runner system's dismouting or the production process of moulding plastics kind, threaded connection can appear not hard up the condition of becoming flexible unavoidably, and the screw thread is not hard up can influence hot runner system's leakproofness, leads to moulding plastics the in-process to have the fused plastic to overflow from the threaded connection department of injection nozzle and flow distribution plate to damage hot runner system's accessory, influence the production of moulding plastics. Therefore, there is a need for a hot runner system to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hot runner system which is firm in structure and convenient to install.

In order to achieve the above objects, an embodiment of the present invention provides a hot runner system, including a flow distribution plate, an injection nozzle fixed on the flow distribution plate, a fixing member sleeved on an outer wall of the injection nozzle, and a fastening member for fixing the fixing member on the flow distribution plate; the injection nozzle comprises an injection nozzle body, a fixing piece and an injection nozzle, wherein an anti-rotation screwing part is formed on the outer peripheral wall of the injection nozzle body, and a matching structure matched with the anti-rotation screwing part is formed on the fixing piece.

As a further improvement of an embodiment of the present invention, the injection nozzle is fixed on the top of the flow distribution plate, and the fastening member is disposed through the fixing member and near the injection nozzle.

As a further improvement of an embodiment of the present invention, the rotation-preventing tightening portion is a polygonal outer wall portion integrally formed on the outer peripheral wall of the injection nozzle, and the fitting structure is a polygonal through hole opened in the fixing member to be fitted with the polygonal outer wall portion.

As a further improvement of an embodiment of the present invention, the fixing member is further provided with waist holes for the fastening members to pass through, the waist holes are symmetrically disposed on two sides of the injection nozzle and extend along a circumferential direction of the injection nozzle, wherein the fastening members are screws, and the top of the flow distribution plate is provided with mounting grooves in threaded connection with the ends of the screws.

As a further improvement of an embodiment of the present invention, the injection nozzle includes a threaded portion in threaded connection with the flow distribution plate, a threaded hole matching with the threaded portion is opened at the top of the flow distribution plate, and the anti-rotation tightening portion is disposed on an upper side of the threaded portion.

As a further improvement of an embodiment of the present invention, the injection nozzle includes an injection nozzle body, and a heating tube disposed in the injection nozzle body and protruding out of an outer peripheral wall of the injection nozzle body, wherein a portion of the heating tube protruding out of the injection nozzle body is disposed above the fixing member.

As a further improvement of an embodiment of the present invention, the fixing member is a cylindrical cushion block coaxially disposed with the injection nozzle, and the injection nozzle body is located below the heating tube to form an annular yielding groove for yielding the cylindrical cushion block.

As a further improvement of an embodiment of the present invention, the cylindrical pad is disposed inside the edge of the flow distribution plate.

As a further improvement of an embodiment of the present invention, the injection nozzle is disposed in a middle region of the top of the splitter plate, and the hot runner system further includes a plurality of hot nozzles fixed to the bottom of the splitter plate, wherein the plurality of hot nozzles are disposed on both sides of the injection nozzle.

As a further improvement of an embodiment of the present invention, the flow distribution plate has a horizontally arranged flow distribution passage, wherein the injection nozzle and the hot nozzle communicate through the flow distribution passage.

Compared with the prior art, the utility model has the beneficial effects that: the hot runner system provided by the utility model has the advantages that the rotation-preventing screwing part of the injection nozzle is mutually limited and matched with the matching structure to form the effect of limiting the rotation of the injection nozzle, and meanwhile, the fixing part is fixed on the flow distribution plate through the fastening part, so that the problem of glue leakage when the injection nozzle of the hot runner system is arranged at the joint of the flow distribution plate is solved, the structural stability of the hot runner system is improved, and the hot runner system has the advantages of firm structure and convenience in installation.

Drawings

FIG. 1 is a schematic structural component view of a hot runner system according to the present invention;

FIG. 2 is an exploded view of the nozzle, fixture and fastener of the hot runner system of the present invention;

FIG. 3 is a schematic top view of a hot runner system according to the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 3 and rotated at a certain angle;

fig. 5 is a sectional view taken along the direction B-B of fig. 3 and is rotated by a certain angle.

In the figure: 1. a hot runner system; 2. a flow distribution plate; 21. mounting grooves; 22. a threaded hole; 23. a diverter plate body; 24. an extension portion; 25. a shunt channel; 3. an injection nozzle; 31. a threaded portion; 32. an injection nozzle body; 33. a heat generating tube; 34. a yielding groove; 35. an annular tube body; 36. an injection cavity; 37. an anti-rotation tightening part; 371. a polygonal outer wall portion; 4. a hot nozzle; 41. hot glue channel; 42. a glue outlet; 5. a fixing member; 51. a mating structure; 52. a waist hole; 6. a fastener.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.

The terms "comprising" and "having," as well as any variations thereof, in the present invention are intended to cover non-exclusive inclusions. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, in the present embodiment, a hot runner system 1 includes a manifold 2, an injection nozzle 3 fixed to the manifold 2, and a plurality of hot nozzles 4 fixed to the manifold 2. The number of the hot nozzles 4 is set according to the requirement of pouring point positions, and the plastic in a molten state sequentially passes through the injection nozzles 3, the flow distribution plate 2 and the hot nozzles 4 by means of heating and temperature control of the plastic injected into the mold and is poured into the cavity of the mold, so that the formation of the solidified material of a pouring system is avoided. The nozzle 3 may be secured to the manifold 2 by a threaded connection or other releasable connection.

Referring to fig. 2, in the present embodiment, the hot runner system 1 further includes a fixing member 5 sleeved on the outer wall of the injection nozzle 3 and a fastening member 6 for fixing the fixing member 5 to the manifold 2. Wherein, the outer peripheral wall of injection nozzle 3 is formed with prevents changeing the portion of screwing up 37, and mounting 5 is formed with the cooperation structure 51 with preventing changeing the portion of screwing up 37 matched with, forms the effect of restriction mounting 5 pivoted through the cooperation of cooperation structure 51 and preventing changeing the portion of screwing up 37 mutually earlier. Fixing piece 5 and flow distribution plate 2 are fixed together through fastener 6, play the fixed injection nozzle 3 and prevent the effect that injection nozzle 3 rotated, have the advantage that reinforcing structure firmness, improvement reliability.

In order to make the plastic in the molten state better enter from the injection nozzle 3 and flow downwards, the injection nozzle 3 is vertically connected to the top of the flow distribution plate 2, so that the plastic in the molten state flows downwards smoothly under the action of gravity through the injection nozzle 3, and the fastening piece 6 penetrates through the fixing piece 5 and is arranged close to the injection nozzle 3, thereby having the advantage of compact structure.

Preferably, the anti-rotation fastening portion 37 is provided as a polygonal outer wall portion 371 integrally formed on the outer peripheral wall of the nozzle 3, and the engagement structure 51 is provided as a polygonal through hole formed inside the fixing member 5 and engaged with the polygonal outer wall portion 371, and in this embodiment, the polygonal outer wall portion 371 of the anti-rotation fastening portion 37 is provided as a regular hexagon, which is convenient for fixing with a conventional hexagonal wrench. Of course, the polygonal outer wall 371 of the anti-rotation fastening portion 37 may have another polygonal shape to achieve the anti-rotation effect, and is not limited to this.

Referring to fig. 3 and 4, a waist hole 52 for the fastening member 6 to pass through is formed at the top of the fixing member 5, the waist holes 52 are symmetrically arranged at two sides of the injection nozzle 3 and extend along the circumferential direction of the injection nozzle 3, wherein the fastening member 6 is a screw, the top of the flow distribution plate 2 is provided with an installation groove 21 in threaded connection with the tail end of the screw, and the aperture of the waist hole 52 is matched with the threaded portion of the screw. Preferably, the arc length of the waist hole 52 is greater than the side length of the polygonal outer wall portion 371 of the anti-rotation tightening portion 37, and the waist hole 52 is disposed near the mounting groove 21, so that the fastening member 6 can be fixed to the flow distribution plate 2 through the waist hole 52 in any case.

Further, the screw includes the screw body that stretches into waist hole 52, is fixed in the fixed part on the mounting 5, and the hexagonal mounting hole has been seted up at the top of fixed part, is convenient for install fixedly through instruments such as screw.

In addition, for the purpose of fixing the fastening member 6 and the fixing member 5, an annular hole for the fastening member 6 to pass through may also be formed at the top of the fixing member 5, and the aperture of the annular hole matches with the threaded portion of the screw. The top of flow distribution plate 2 is provided with an installation groove 21 in threaded connection with the tail end of the screw, and fastener 6 penetrates through the annular hole and the tail end of fastener 6 is fixed in installation groove 21. Of course, the fastening member 6 may abut against the top of the flow distribution plate 2, and the fixing member 5 may be fixed to the top of the flow distribution plate 2 by other means, which will not be described in detail herein.

In this embodiment, the injection nozzle 3 is connected with the flow distribution plate 2 by a threaded connection manner, the injection nozzle 3 includes a threaded portion 31 in threaded connection with the flow distribution plate 2, and the top of the flow distribution plate 2 is provided with a threaded hole 22 matching with the threaded portion 31; the anti-rotation fastening portion 37 is provided on the upper side of the threaded portion 31.

In order not to affect the structure of the injection nozzle 3, the injection nozzle 3 includes an injection nozzle body 32, and a heating tube 33 disposed in the injection nozzle body 32 and protruding out of the polygonal outer wall 371 of the injection nozzle body 32, wherein the portion of the heating tube 33 protruding out of the injection nozzle body 32 is disposed above the fixing member 5, so that the fixing member 5 is fixed below the heating tube 33, and the fixing member 5 can be installed without modifying the structure of the injection nozzle 3 itself.

Referring to fig. 5, the fixing member 5 is a cylindrical pad coaxially disposed with the nozzle 3, and the nozzle body 32 is located below the heat pipe 33 to form an annular recess 34 for receiving the cylindrical pad. The injection nozzle body 32 is provided with a hollow annular tube body 35 for accommodating the heating tube 33, the inner side of the annular tube body 35 is provided with an opening for installing the heating tube 33, and a yielding groove 34 is formed below the annular tube body 35, so that the cylindrical cushion block can be conveniently positioned and installed.

Preferably, the cylindrical cushion block is arranged on the inner side of the edge of the splitter plate 2, that is, the cylindrical cushion block does not exceed the edge of the splitter plate 2, and the advantages of compact structure and convenient installation are achieved.

Preferably, the injection nozzle 3 is vertically connected to the middle area of the top of the flow distribution plate 2, and the number of the hot nozzles 4 is set to be plural. Wherein, a plurality of hot nozzles 4 are arranged at both sides of injection nozzle 3, so that the plastic in the molten state in injection nozzle 3 reaches the hot nozzles 4 at both sides in a relatively short time, and the structure is stable.

Further, the flow distribution plate 2 includes a flow distribution plate body 23 and an extension portion 24 extending from the flow distribution plate body 23 to both sides symmetrically, the hot nozzle 4 is fixed at the bottom of the extension portion 24, and the hot nozzle 4 can be fixed with the extension portion 24 by a threaded connection or other detachable connection manner.

Preferably, the injection nozzle 3 has an injection cavity 36 penetrating along its longitudinal axis, the diversion plate 2 has a diversion channel 25 communicating with the injection cavity 36 and horizontally arranged, the hot nozzle 4 has a hot glue channel 41 communicating with the diversion channel 25, and a glue outlet 42 arranged at the bottom end of the hot glue channel 41; injection nozzle 3 communicates with hot nozzle 4 via a runner 25. So that the plastic in a molten state flows in from the inlet end of the injection nozzle 3, is guided by the flow dividing plate 2, and then flows out from the glue outlet 42 of the hot nozzle 4.

When the injection nozzle is installed, the injection nozzle 3 is fixed on the flow distribution plate 2, the fixing member 5 is sleeved on the polygonal outer wall portion 371 of the injection nozzle 3, the waist hole 52 is covered on the installation groove 21, the fastening member 6 penetrates through the waist hole 52, and the tail end of the fastening member 6 is in threaded connection with the installation groove 21.

Compared with the prior art, the hot runner system 1 provided by the utility model has the advantages that the rotation-preventing screwing part 37 of the injection nozzle 3 and the matching structure 51 are mutually limited and matched to form the effect of limiting the rotation of the injection nozzle 3, and meanwhile, the fixing part 5 is fixed on the flow distribution plate 2 through the fastening part 6, so that the problem of glue leakage at the joint of the injection nozzle 3 of the hot runner system 1, which is arranged on the flow distribution plate 2, is solved, the structural stability of the hot runner system 1 is improved, and the hot runner system has the advantages of firm structure and convenience in installation.

Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that, although the utility model has been described in detail with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the utility model as defined by the appended claims.

Claims

1. A hot runner system comprises a splitter plate and an injection nozzle fixed on the splitter plate, and is characterized in that,

the hot runner system also comprises a fixing piece sleeved on the outer wall of the injection nozzle and a fastener for fixing the fixing piece on the flow distribution plate;

the injection nozzle comprises an injection nozzle body, a fixing piece and an injection nozzle, wherein an anti-rotation screwing part is formed on the outer peripheral wall of the injection nozzle body, and a matching structure matched with the anti-rotation screwing part is formed on the fixing piece.

2. The hot-runner system of claim 1, wherein: the injection nozzle is fixed on the top of the flow distribution plate, and the fastening piece penetrates through the fixing piece and is close to the injection nozzle.

3. The hot-runner system of claim 2, wherein: prevent changeing the portion of screwing up for integrated into one piece in the polygon outer wall portion on the injection nozzle periphery wall, the cooperation structure be for offering in the mounting inside with polygon outer wall portion complex polygon through-hole.

4. The hot-runner system of claim 2, wherein: the mounting still seted up the confession the waist hole that the fastener runs through, waist hole symmetry set up in the both sides of injection nozzle, and extend the setting along the circumferencial direction of injection nozzle, wherein, the fastener is established to the screw, the top of flow distribution plate seted up with the mounting groove of the terminal threaded connection of screw.

5. The hot-runner system of claim 1, wherein: the injection nozzle comprises a threaded portion in threaded connection with the flow distribution plate, a threaded hole matched with the threaded portion is formed in the top of the flow distribution plate, and the anti-rotating screwing portion is arranged on the upper side of the threaded portion.

6. The hot-runner system of claim 1, wherein: the injection nozzle comprises an injection nozzle body and a heating tube which is arranged in the injection nozzle body and protrudes out of the peripheral wall of the injection nozzle body, wherein the part of the heating tube protruding out of the injection nozzle body is arranged above the fixing piece.

7. The hot-runner system of claim 6, wherein: the fixing piece is arranged as a cylindrical cushion block coaxially arranged with the injection nozzle, and the injection nozzle body is positioned below the heating tube to form an annular yielding groove for yielding the cylindrical cushion block.

8. The hot-runner system of claim 7, wherein: the cylindrical cushion block is arranged on the inner side of the edge of the flow distribution plate.

9. The hot-runner system of claim 2, wherein: the injection nozzle is arranged in the middle area of the top of the flow distribution plate, the hot runner system further comprises a plurality of hot nozzles fixed at the bottom of the flow distribution plate, and the plurality of hot nozzles are arranged on two sides of the injection nozzle.

10. The hot-runner system of claim 9, wherein: the flow dividing plate is provided with a horizontally arranged flow dividing channel, wherein the injection nozzle is communicated with the hot nozzle through the flow dividing channel.