Hot nozzle for hot runner

Abstract

The utility model discloses a hot nozzle for a hot runner, and relates to the technical field of hot nozzles. The hot runner comprises a hot runner pipe body and a hot runner nozzle, a plurality of bevel gears are rotatably matched on the hot runner pipe body, threaded limiting rods which are in threaded fit with the hot runner pipe body are slidably matched in the bevel gears, a plurality of bevel gear rings which are meshed with the bevel gears are rotatably matched on the hot runner pipe body, and limiting grooves corresponding to the threaded limiting rods are formed in the hot runner nozzle. The hot flow nozzle is inserted into the hot runner pipe body, the bevel gear rings rotate to drive the bevel gears to rotate, the bevel gears drive the threaded limiting rods to rotate on the hot runner pipe body, the threaded limiting rods are screwed into the limiting grooves in the hot flow nozzle, and then rotation and pulling-out of the hot flow nozzle are limited through the threaded limiting rods. Furthermore, the hot flow nozzle can be quickly positioned through single-person operation, and the mounting and dismounting cost of the hot flow nozzle can be conveniently reduced.

Description

Technical Field

[0001] The utility model belongs to the field of hot nozzles, and in particular relates to a hot nozzle for a hot runner. Background Art

[0002] As we all know, hot runner is an object used in injection molds. It is a heating component system that can inject melted plastic particles into the mold cavity. However, the traditional hot runner nozzle structure also has certain defects. The hot runner nozzle and the hot runner are mostly fixed with threads. If they are impacted by heat flow for a long time, rotation problems will occur, which is not convenient for people to install and use quickly. In addition, the hot runner tube body does not have a thermal insulation structure, which leads to rapid heat loss.

[0003] A Chinese patent with application number CN202220578830.2 discloses a rotation-stopping structure for a hot runner nozzle. By pushing the hot runner nozzle into a sealing ring and loosening the end rod to allow the spring to recover its deformation, the clamping rod is pulled to clamp the connecting ring, so that people can quickly install the hot runner nozzle and avoid the problem of the hot runner nozzle rotating under force. The hot runner nozzle is effectively stopped from rotating. The rotation-stopping structure for the hot runner nozzle in this application limits the rotation of the hot runner nozzle by an elastic clamping rod. During installation and disassembly, the two clamping rods need to be manually pulled out at the same time, resulting in the need for other workers to insert the hot runner nozzle into the hot runner tube body. At least two people are required to complete the task, and the operating cost is relatively high.

[0004] In view of this, the present utility model is proposed. Summary of the invention

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a hot nozzle for a hot runner.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] A hot runner hot nozzle comprises a hot runner tube body and a hot runner nozzle. The hot runner tube body is rotatably fitted with a plurality of bevel gears, a threaded limiting rod slidably fitted inside the bevel gear and fitted with the thread of the hot runner tube body, a bevel gear ring meshing with the plurality of bevel gears is rotatably fitted on the hot runner tube body, and the hot runner nozzle is provided with a limiting groove corresponding to the threaded limiting rod.

[0008] Optionally, a threaded hole corresponding to the threaded limit rod is provided on the hot runner tube body, and the threaded limit rod is threadedly fitted in the threaded hole, so that the threaded limit rod can be rotated in the threaded hole, thereby screwing the threaded limit rod into the limit groove on the hot runner nozzle.

[0009] Optionally, a through hole is provided on the bevel gear, a guide protrusion is provided on the inner wall of the through hole, and a guide groove is provided on the side of the threaded limit rod. The threaded limit rod is slidably fitted on the guide protrusion through the guide groove, so that the guide protrusion drives the threaded limit rod and the bevel gear to rotate synchronously, and at the same time, the threaded limit rod is guided to slide in the through hole through the guide protrusion.

[0010] Optionally, a groove is provided on the hot runner tube body, a first bearing is provided in the groove, an annular protrusion is provided on the bevel gear, and the bevel gear is fixed in the first bearing, so as to improve the rotation stability of the bevel gear through the first bearing.

[0011] Optionally, a rotating ring is provided on the bevel gear ring, and a plurality of anti-slip grooves are arranged in a circumferential array on the rotating ring. A second bearing is sleeved on the hot runner tube body, and the rotating ring is fixedly sleeved on the second bearing, so as to improve the rotation stability of the rotating ring through the second bearing, thereby improving the rotation stability of the bevel gear ring.

[0012] Optionally, a fixing ring is provided on the rotating ring, and a plurality of fixing columns are provided in a circular array on the hot runner tube body. The plurality of fixing columns correspond one to one with the plurality of threaded limiting rods. A fixing groove corresponding to the fixing column is provided on the fixing ring, so that the insertion depth of the hot runner tube body can be limited by the fixing ring. The fixing groove on the fixing ring is provided on the fixing column, so that the rotation of the fixing ring can be limited by the fixing column.

[0013] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0014] By inserting the hot flow nozzle into the hot runner tube body, the bevel gear ring rotates, thereby driving multiple bevel gears to rotate, and the bevel gears drive the threaded limit rod to rotate on the hot runner tube body, so that the threaded limit rod is screwed into the limit groove on the hot flow nozzle, and then the rotation and withdrawal of the hot flow nozzle are limited by the threaded limit rod, so that the hot flow nozzle can be quickly positioned, and the hot flow nozzle can be quickly positioned by a single person, which is convenient for reducing the installation and disassembly cost of the hot flow nozzle.

[0015] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0018] Figure 2This is a schematic cross-sectional view of an embodiment of the utility model;

[0019] Figure 3 for Figure 2 Schematic diagram of the structure at A in the middle;

[0020] Figure 4 An exploded view of an embodiment of the utility model;

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] Hot runner body 1, hot runner nozzle 2, bevel gear 3, threaded limiting rod 4, bevel gear ring 5, limiting groove 6, threaded hole 7, through hole 8, guide protrusion 9, guide channel 10, groove 11, first bearing 12, annular protrusion 13, rotating ring 14, second bearing 15, fixed ring 16, fixed column 17, fixed groove 18.

[0023] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0024] The utility model will now be further described in detail with reference to the accompanying drawings.

[0025] See also Figure 1-4 As shown, in this embodiment, a hot runner nozzle is provided, including a hot runner body 1 and a hot runner nozzle 2. The hot runner body 1 is rotatably fitted with a plurality of bevel gears 3, and a threaded limiting rod 4 that is threadably fitted with the hot runner body 1 is slidably fitted inside the bevel gear 3. A bevel gear ring 5 that is meshed with the plurality of bevel gears 3 is rotatably fitted on the hot runner body 1, and the hot runner nozzle 2 is provided with a limiting groove 6 corresponding to the threaded limiting rod 4.

[0026] By inserting the hot flow nozzle 2 into the hot runner tube body 1, the bevel gear ring 5 rotates, thereby driving multiple bevel gears 3 to rotate, and the bevel gear 3 drives the threaded limit rod 4 to rotate on the hot runner tube body 1, so that the threaded limit rod 4 is screwed into the limit groove 6 on the hot flow nozzle 2, and then the rotation and withdrawal of the hot flow nozzle 2 are limited by the threaded limit rod 4, so that the hot flow nozzle 2 can be quickly positioned, and the hot flow nozzle 2 can be quickly positioned by a single person, which is convenient for reducing the installation and disassembly cost of the hot flow nozzle 2.

[0027] The hot runner tube body 1 of the present embodiment is provided with a threaded hole 7 corresponding to the threaded limiting rod 4, and the threaded limiting rod 4 is threadedly engaged in the threaded hole 7, so that the threaded limiting rod 4 can be rotated in the threaded hole 7, and then the threaded limiting rod 4 can be screwed into the limiting groove 6 on the hot runner nozzle 2, and then the threaded limiting rod 4 can limit the rotation and withdrawal of the hot runner nozzle 2.

[0028] The bevel gear 3 of this embodiment is provided with a through hole 8, and the inner wall of the through hole 8 is provided with a guide protrusion 9, and the side of the threaded limit rod 4 is provided with a guide groove 10. The threaded limit rod 4 is slidably fitted on the guide protrusion 9 through the guide groove 10, so that the guide protrusion 9 drives the threaded limit rod 4 and the bevel gear 3 to rotate synchronously. At the same time, the threaded limit rod 4 is guided by the guide protrusion 9 to slide in the through hole 8, so that the threaded limit rod 4 can rotate in the threaded hole 7.

[0029] A groove 11 is provided on the hot runner tube body 1 of the present embodiment, a first bearing 12 is provided in the groove 11, an annular protrusion 13 is provided on the bevel gear 3, and the bevel gear 3 is fixed in the first bearing 12, so as to improve the stability of the rotation of the bevel gear 3 through the first bearing 12, and to improve the stability of the synchronous rotation of the threaded limit rod 4 driven by the bevel gear 3.

[0030] A rotating ring 14 is provided on the bevel gear ring 5 of the present embodiment. A plurality of anti-skid grooves are arranged in a circumferential array on the rotating ring 14. A second bearing 15 is sleeved on the hot runner tube body 1. The rotating ring 14 is fixedly sleeved on the second bearing 15, so as to improve the rotation stability of the rotating ring 14 through the second bearing 15, thereby improving the rotation stability of the bevel gear ring 5 and improving the stability of the rotation of the plurality of bevel gears 3 driven by the bevel gear ring 5.

[0031] In this embodiment, a fixing ring 16 is fixedly sleeved on the rotating ring 14, and a plurality of fixing posts 17 are arranged in a circular array on the hot runner tube body 1. The plurality of fixing posts 17 correspond one to one with the plurality of threaded limiting rods 4. A fixing groove 18 corresponding to the fixing post 17 is provided on the fixing ring 16, so that the insertion depth of the hot runner tube body 1 can be limited by the fixing ring 16. The fixing groove 18 on the fixing ring 16 is sleeved on the fixing post 17, so that the rotation of the fixing ring 16 can be limited by the fixing post 17, while keeping the threaded limiting rod 4 corresponding to the limiting groove 6.

[0032] Working principle: insert the hot runner nozzle 2 into the hot runner tube body 1, limit the insertion depth of the hot runner tube body 1 by the fixing ring 16, and sleeve the fixing groove 18 on the fixing ring 16 on the fixing column 17, so as to limit the rotation of the fixing ring 16 by the fixing column 17, and then drive the bevel gear ring 5 to rotate by the rotating ring 14, and then drive multiple bevel gears 3 to rotate, and the bevel gear 3 drives the threaded limit rod 4 to rotate in the threaded hole 7 on the hot runner tube body 1, so that the threaded limit rod 4 is screwed into the limit groove 6 on the hot runner nozzle 2, and then the rotation and removal of the hot runner nozzle 2 are limited by the threaded limit rod 4, so as to facilitate the rapid positioning of the hot runner nozzle 2, and the hot runner nozzle 2 can be quickly positioned by a single person, which is convenient for reducing the installation and disassembly cost of the hot runner nozzle 2.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. A hot runner hot nozzle, characterized in that: include: A hot runner tube body (1) and a hot runner nozzle (2); the hot runner tube body (1) is rotatably fitted with a plurality of bevel gears (3); a threaded limit rod (4) is slidably fitted inside the bevel gear (3) and is threadably fitted with the thread of the hot runner tube body (1); a bevel gear ring (5) is rotatably fitted with the hot runner tube body (1) and is meshed with the plurality of bevel gears (3); and a limit groove (6) corresponding to the threaded limit rod (4) is provided on the hot runner nozzle (2).

2. A hot runner hot nozzle according to claim 1, characterized in that: The hot runner pipe body (1) is provided with a threaded hole (7) corresponding to the threaded limiting rod (4), and the threaded limiting rod (4) is threadably engaged in the threaded hole (7).

3. A hot runner hot nozzle according to claim 1, characterized in that: The bevel gear (3) is provided with a through hole (8), the inner wall of the through hole (8) is provided with a guide protrusion (9), the side of the threaded limiting rod (4) is provided with a guide groove (10), and the threaded limiting rod (4) is slidably fitted on the guide protrusion (9) through the guide groove (10).

4. A hot runner hot nozzle according to claim 1, characterized in that: A groove (11) is provided on the hot runner tube body (1), a first bearing (12) is provided in the groove (11), an annular protrusion (13) is provided on the bevel gear (3), and the bevel gear (3) is fixed in the first bearing (12).

5. A hot runner hot nozzle according to claim 1, characterized in that: A rotating ring (14) is provided on the bevel gear ring (5), a plurality of anti-slip grooves are arranged in a circumferential array on the rotating ring (14), a second bearing (15) is sleeved on the hot runner tube body (1), and the rotating ring (14) is fixedly sleeved on the second bearing (15).

6. A hot runner hot nozzle according to claim 1, characterized in that: A fixing ring (16) is provided on the fixing sleeve of the rotating ring (14), a plurality of fixing posts (17) are arranged in a circumferential array on the hot runner pipe body (1), and a fixing groove (18) corresponding to the fixing posts (17) is provided on the fixing ring (16).

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