Hot nozzle assembly and hot runner system

Abstract

The utility model provides a hot nozzle assembly and a hot runner system, the hot nozzle assembly comprises a hot nozzle body, a nozzle tip and an angle pin, the hot nozzle body is provided with a first runner and a liquid outlet located at the tail end of the first runner, and the plane where the liquid outlet is located is a first inclined plane which is obliquely arranged relative to the axis direction of the hot nozzle body; the nozzle tip is provided with a second runner which is arranged at a certain angle relative to the first runner; and the angle pin is arranged between the hot nozzle body and the nozzle tip and is provided with a second inclined surface attached to the first inclined surface, a matching surface matched with the nozzle tip and a third runner penetrating through the second inclined surface and the matching surface, and the third runner is communicated with the first runner and the second runner. The inclined pin is arranged between the hot nozzle body and the nozzle tip, and the hot nozzle body, the inclined pin and the nozzle tip are tightly propped in the radial direction of the hot nozzle body by utilizing the first inclined surface of the hot nozzle body and the second inclined surface of the inclined pin, so that liquid leakage is prevented, and the hot nozzle is convenient and quick to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of hot runners, in particular to a hot nozzle assembly and a hot runner system. Background Art

[0002] At present, the hot runner system of the injection mold mainly consists of molten glue coming out from the nozzle of the injection molding machine, being diverted by the manifold, and transported to each hot nozzle, and then injected into the injection gate of the mold from the liquid outlet of the hot nozzle core.

[0003] For some special products, it is necessary to inject glue into the mold cavity from the side of the hot nozzle body. In the prior art, one end of the hot nozzle body is connected to the diverter plate through a flange, and the other end of the hot nozzle body is connected to the diverter nozzle, and multiple nozzle tips are installed on the side wall of the diverter nozzle. The multiple nozzle tips are connected to the diverter nozzle by threaded connection and fixed by a pressure cap, thereby realizing lateral glue injection.

[0004] However, the side glue port of some injection molded products cannot be set near the opening of the mold. When multiple nozzle tips are pre-connected to the side wall of the diverter nozzle by threaded connection, it is very difficult to install them in the mold; at the same time, it is also very troublesome to remove the nozzle tip from the diverter nozzle. The increase in the frequency of disassembly will also lead to a decrease in the sealing of the connection between the nozzle tip and the diverter nozzle. Utility Model Content

[0005] The utility model aims to provide a hot nozzle assembly and a hot runner system. The hot nozzle assembly tightens the hot nozzle body and the nozzle tip through an oblique pin, and the oblique pin is easy to disassemble, thereby solving the problem of difficulty in installing and disassembling the nozzle tip during lateral glue injection in the prior art.

[0006] In order to achieve one of the above-mentioned purposes of the utility model, an embodiment of the utility model provides a hot nozzle assembly, including:

[0007] The hot nozzle body is provided with a first flow channel and a liquid outlet located at the end of the first flow channel, and the plane where the liquid outlet is located is a first inclined plane inclined relative to the axial direction of the hot nozzle body;

[0008] The tip of the nozzle is provided with a second flow channel arranged at a certain angle relative to the first flow channel;

[0009] The inclined pin is arranged between the hot nozzle body and the nozzle tip, and is provided with a second inclined surface that fits with the first inclined surface, a matching surface that matches with the nozzle tip, and a third flow channel that runs through the second inclined surface and the matching surface, and the third flow channel connects the first flow channel and the second flow channel.

[0010] As a further improvement of an embodiment of the utility model, the hot nozzle body is provided with a clearance groove whose shape matches the shape of the oblique pin, the clearance groove is extended upward from the lower end of the hot nozzle body, and the oblique pin is arranged in the clearance groove;

[0011] In the direction from bottom to top, the cross section of the relief groove gradually decreases.

[0012] As a further improvement of an embodiment of the utility model, the matching surface is parallel to the axis of the hot nozzle body.

[0013] As a further improvement of an embodiment of the utility model, the clearance groove is provided with a first abutting surface facing downward, and in the length direction of the hot nozzle body, the distance between the first abutting surface and the lower end surface of the hot nozzle body is equal to the length of the oblique pin.

[0014] As a further improvement of an embodiment of the utility model, it also includes a fixed cover plate, which is fixed to the hot nozzle body, and the fixed cover plate at least partially covers the lower end surface of the hot nozzle body and the lower end surface of the oblique pin.

[0015] As a further improvement of one embodiment of the utility model, the first flow channel includes a first main flow channel and a first branch flow channel, the first main flow channel is arranged along a first direction, the first branch flow channel is arranged at an angle to the first main flow channel, and the first branch flow channel is connected to the third flow channel; the second flow channel is arranged along a second direction, and the second direction is arranged at an angle to the first direction.

[0016] As a further improvement of an embodiment of the utility model, the outer sleeve of the nozzle tip is provided with a pressure cap.

[0017] As a further improvement of an embodiment of the utility model, the pressure cap is in a step shape, including a large diameter section close to one end of the hot nozzle body and a small diameter section away from one end of the hot nozzle body, and a second abutting surface is formed between the large diameter section and the small diameter section, and the second abutting surface faces away from the hot nozzle body;

[0018] The hot nozzle assembly also includes a heat insulation ring, which abuts against the second abutment surface.

[0019] An embodiment of the utility model further provides a hot runner system, comprising a template and a hot nozzle assembly, wherein the hot nozzle assembly is the hot nozzle assembly as described above.

[0020] As a further improvement of one embodiment of the utility model, the template is provided with a first accommodating cavity matching the shape of the hot nozzle body, a second accommodating cavity matching the shape of the nozzle tip, and a yield cavity connected to the first accommodating cavity and passing through the template along the axial direction of the hot nozzle body.

[0021] One or more technical solutions provided by the utility model have at least the following technical effects or advantages:

[0022] In the hot nozzle assembly provided by the utility model, a first inclined surface is arranged on the hot nozzle body, and an inclined pin with a second inclined surface is additionally provided. When the hot nozzle assembly is installed on the mold, the second inclined surface of the inclined pin abuts against the first inclined surface during the pushing process, so that the hot nozzle body and the nozzle tip are pressed tightly against the mold, and the inclined pin facilitates installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a partial exploded view of the hot nozzle assembly in the embodiment of the utility model.

[0024] Figure 2 yes Figure 1 Front view of the middle hot nozzle assembly.

[0025] Figure 3 yes Figure 2 Schematic cross-sectional view along line AA.

[0026] Figure 4 It is a cross-sectional view of the hot runner system in an embodiment of the utility model.

[0027] 10. Template; 101. First accommodating cavity; 102. Second accommodating cavity; 103. Make way cavity; 20. Diverter plate;

[0028] 1. Hot nozzle body; 11. First flow channel; 111. First main flow channel; 112. First branch flow channel; 12. Liquid outlet; 13. First inclined surface; 14. Make way groove; 141. First abutting surface; 2. Nozzle tip; 21. Second flow channel; 3. Oblique pin; 31. Third flow channel; 32. Second inclined surface; 33. Matching surface; 4. Fixed cover plate; 5. Pressing cap; 51. Large diameter section; 52. Small diameter section; 53. Second abutting surface; 6. Thermal insulation ring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Terms such as "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used herein to indicate spatial relative positions are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. Terms of spatial relative positions may be intended to include different orientations of the device in use or operation other than the orientation shown in the drawings.

[0031] For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] Furthermore, it should be understood that although the terms first, second, etc. may be used herein to describe various elements or structures, these described objects should not be limited by these terms. These terms are only used to distinguish these described objects from each other. For example, a first flow channel may be referred to as a second flow channel, and similarly, a second flow channel may also be referred to as a first flow channel, which does not deviate from the scope of protection of this application.

[0034] The utility model embodiment provides a hot nozzle assembly, such as Figures 1 to 3 As shown, it includes a hot nozzle body 1, a nozzle tip 2 and an inclined pin 3. The hot nozzle body 1 is provided with a first flow channel 11 and a liquid outlet 12 located at the end of the first flow channel 11, and the plane where the liquid outlet 12 is located is a first inclined surface 13 inclined relative to the axial direction of the hot nozzle body 1; the nozzle tip 2 is provided with a second flow channel 21 arranged at a certain angle relative to the first flow channel 11; the inclined pin 3 is arranged between the hot nozzle body 1 and the nozzle tip 2, and is provided with a second inclined surface 32 fitted with the first inclined surface 13, a matching surface 33 matched with the nozzle tip 2, and a third flow channel 31 passing through the second inclined surface 32 and the matching surface 33, and the third flow channel 31 connects the first flow channel 11 and the second flow channel 21.

[0035] Specifically, Figure 3In the embodiment, the nozzle body 1 is provided with a clearance groove 14 whose shape matches that of the oblique pin 3. The clearance groove 14 extends upward from the lower end of the nozzle body 1, and the oblique pin 3 is arranged in the clearance groove 14. In the direction from bottom to top, the cross section of the clearance groove 14 gradually decreases. It should be noted that Figure 3 In the length direction of the hot nozzle body 1, the lower end is the end close to the nozzle tip 2, the upper end is the end away from the nozzle tip 2, and the direction from the upper end to the lower end is the first direction.

[0036] The clearance groove 14 extends upward from the lower end of the hot nozzle body 1, and the clearance groove 14 has a downward opening; because the oblique pin 3 arranged in the clearance groove 14 has a matching surface 33 matched with the nozzle tip 2, the clearance groove 14 also has an opening toward the nozzle tip 2. In the direction from bottom to top, the cross section of the clearance groove 14 gradually becomes smaller, so that the oblique pin 3 can extend into the clearance groove 14 from bottom to top and be arranged between the hot nozzle body 1 and the nozzle tip 2.

[0037] Furthermore, the mating surface 33 is parallel to the axis of the nozzle body 1, so that the end surface of the nozzle tip 2 mating with the mating surface 33 close to the nozzle body 1 is also parallel to the nozzle body 1, so that most nozzle tips 2 can be universally used.

[0038] Further, the clearance groove 14 is provided with a first abutting surface 141 facing downward, and in the length direction of the nozzle body 1, the distance between the first abutting surface 141 and the lower end surface of the nozzle body 1 is equal to the length of the oblique pin 3. The oblique pin 3 is arranged between the nozzle body 1 and the nozzle tip 2 from bottom to top, and the oblique pin 3 is installed in place under the stop of the first abutting surface 141. In the length direction of the nozzle body 1, the distance between the first abutting surface 141 and the lower end surface of the nozzle body 1 is equal to the length of the oblique pin 3, so that the oblique pin 3 is just arranged in the clearance groove 14, neither protruding from the nozzle body 1 nor recessed in the nozzle body 1, that is, the lower end surface of the nozzle body 1 is flush with the lower end surface of the oblique pin 3.

[0039] Furthermore, the hot nozzle assembly further comprises a fixed cover plate 4, which is fixed to the hot nozzle body 1, and the fixed cover plate 4 at least partially covers the lower end surface of the hot nozzle body 1 and the lower end surface of the inclined pin 3.

[0040] The lower end surface of the hot nozzle body 1 is flush with the lower end surface of the inclined pin 3. A fixed cover plate 4 is fixed to the lower end surface of the hot nozzle body 1. The fixed cover plate 4 can be fixed to the hot nozzle body 1 by screws or the like. Figure 3 In the embodiment, the fixed cover plate 4 completely covers the oblique pin 3 so that the oblique pin 3 cannot slip out of the clearance groove 14 .

[0041] In some embodiments, the first flow channel 11 includes a first main flow channel 111 and a first branch flow channel 112. The first main flow channel 111 is arranged along a first direction, the first branch flow channel 112 is arranged at an angle to the first main flow channel 111, and the first branch flow channel 112 is connected to the third flow channel 31; the second flow channel 21 is arranged along a second direction, and the second direction is arranged at an angle to the first direction.

[0042] like Figure 1 It can be seen that the hot nozzle assembly is provided with four nozzle tips 2, that is, four first branch channels 112 are provided, and the four first branch channels 112 are evenly spaced in the radial direction of the hot nozzle body 1 and are all connected to the first main channel 111. Preferably, the second direction is perpendicular to the first direction.

[0043] In some embodiments, the nozzle tip 2 is provided with a pressure cap 5 .

[0044] Furthermore, the pressure cap 5 is in a step shape, including a large diameter section 51 close to one end of the nozzle body 1 and a small diameter section 52 away from one end of the nozzle body 1, and a second abutting surface 53 is formed between the large diameter section 51 and the small diameter section 52, and the second abutting surface 53 faces away from the nozzle body 1; the nozzle assembly also includes a heat insulating ring 6, and the heat insulating ring 6 abuts against the second abutting surface 53. The heat insulating ring 6 can prevent the nozzle tip 2 from dissipating the heat of the fluid to the template 10.

[0045] The embodiment of the utility model further provides a hot runner system, which includes the aforementioned hot nozzle assembly and a template 10.

[0046] Further, such as Figure 4 As shown, the template 10 is provided with a first accommodating cavity 101 matching the shape of the hot nozzle body 1 described below, a second accommodating cavity 102 matching the shape of the nozzle tip 2 described below, and a make way cavity 103 connected to the first accommodating cavity 101 and penetrating the template 10 along the axial direction of the hot nozzle body 1.

[0047] When the hot nozzle assembly provided by the utility model is applied to the aforementioned hot runner system, Figure 4As shown, the nozzle tip 2 is first arranged in the aforementioned second accommodating cavity 102 along the second direction, and then the hot nozzle body 1 is arranged in the aforementioned first accommodating cavity 101 along the first direction, and the top is fixed by the diverter plate 20; then, the inclined pin 3 is arranged in the accommodating groove 14 opened in the hot nozzle body 1 from the accommodating cavity 103 in the opposite direction of the first direction. As the inclined pin 3 moves, the inclined pin 3 uses the first inclined surface 13 and the second inclined surface 32 to press the nozzle tip 2 against the inner wall of the second accommodating cavity 102 in the radial direction of the hot nozzle body 1, so that the first inclined surface 13 and the second inclined surface 32 are in close contact, and the matching surface 33 is in close contact with the nozzle tip 2, thereby preventing the fluid from leaking from the connection between the first flow channel 11 and the third flow channel 31, and the connection between the second flow channel 21 and the third flow channel 31. Finally, the fixed cover plate 4 is fixed to the hot nozzle body 1 through the accommodating cavity 103 to prevent the inclined pin 3 from slipping off.

[0048] When the hot nozzle assembly provided by the utility model is applied to a hot runner system, the oblique pin 3 can ensure that the hot nozzle assembly does not leak material, and can be easily installed and disassembled by fixing the cover plate 4, so that each component of the hot nozzle assembly can also be quickly installed and disassembled.

[0049] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0050] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A hot nozzle assembly, characterized in that: include: The hot nozzle body is provided with a first flow channel and a liquid outlet located at the end of the first flow channel, and the plane where the liquid outlet is located is a first inclined plane inclined relative to the axial direction of the hot nozzle body; The tip of the nozzle is provided with a second flow channel arranged at a certain angle relative to the first flow channel; The inclined pin is arranged between the hot nozzle body and the nozzle tip, and is provided with a second inclined surface that fits with the first inclined surface, a matching surface that matches with the nozzle tip, and a third flow channel that runs through the second inclined surface and the matching surface, and the third flow channel connects the first flow channel and the second flow channel.

2. The hot nozzle assembly according to claim 1, characterized in that: The hot nozzle body is provided with a clearance groove whose shape matches the shape of the oblique pin, the clearance groove is extended upward from the lower end of the hot nozzle body, and the oblique pin is arranged in the clearance groove; In the direction from bottom to top, the cross section of the relief groove gradually decreases.

3. The hot nozzle assembly according to claim 2, characterized in that: The matching surface is parallel to the axis of the hot nozzle body.

4. The hot nozzle assembly according to claim 2, characterized in that: The clearance groove is provided with a first abutting surface facing downwards, and in the length direction of the hot nozzle body, the distance between the first abutting surface and the lower end surface of the hot nozzle body is equal to the length of the oblique pin.

5. The hot nozzle assembly according to claim 4, characterized in that: It also includes a fixed cover plate, which is fixed to the hot nozzle body, and the fixed cover plate at least partially covers the lower end surface of the hot nozzle body and the lower end surface of the oblique pin.

6. The hot nozzle assembly according to claim 1, characterized in that: The first flow channel includes a first main flow channel and a first branch flow channel. The first main flow channel is arranged along a first direction, the first branch flow channel is arranged at an angle to the first main flow channel, and the first branch flow channel is connected to the third flow channel. The second flow channel is arranged along a second direction, and the second direction is arranged at an angle to the first direction.

7. The hot nozzle assembly according to claim 1, characterized in that: The outer sleeve of the nozzle tip is provided with a pressure cap.

8. The hot nozzle assembly according to claim 7, characterized in that: The pressing cap is in a step shape, including a large diameter section close to one end of the hot nozzle body and a small diameter section away from one end of the hot nozzle body, a second abutting surface is formed between the large diameter section and the small diameter section, and the second abutting surface faces away from the hot nozzle body; The hot nozzle assembly also includes a heat insulation ring, which abuts against the second abutment surface.

9. A hot runner system, characterized in that: It comprises a template and a hot nozzle assembly, and the hot nozzle assembly is the hot nozzle assembly according to any one of claims 1 to 8.

10. The hot runner system according to claim 9, characterized in that: The template is provided with a first accommodating cavity matched with the shape of the hot nozzle body, a second accommodating cavity matched with the shape of the nozzle tip, and a clearance cavity communicated with the first accommodating cavity and penetrating the template along the axial direction of the hot nozzle body.

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