Multi-head type hot runner nozzle
By introducing a dust prevention mechanism into the multi-head hot runner nozzle, and utilizing the cooperation of the torsion block and the baffle, the problem of dust clogging the nozzle head is solved, the nozzle is effectively isolated, and production efficiency is improved.
Patent Information
- Application Number
- CN202423168797.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In small factories, multi-head hot runner nozzles are prone to clogging due to dust adhesion, leading to reduced production efficiency.
A multi-head hot runner nozzle was designed, comprising a nozzle base, a dustproof mechanism, and a dustproof shell. Through the cooperation of a torsion block, gears, and baffles, the nozzle head is effectively isolated from the outside environment to prevent dust from entering.
This effectively prevents the nozzle head from being clogged by dust, improves production efficiency and the practicality of the nozzle, and ensures the normal operation of the nozzle.
Smart Images
Figure CN223618140U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hot runner nozzle technology, specifically a multi-head hot runner nozzle. Background Technology
[0002] Hot runner nozzles are key components of hot runner molds. Their design must first meet thermal balance requirements, maintaining the molten state of the plastic inside the nozzle while avoiding problems caused by overheating or undercooling. Hot runner nozzles use heating to keep the plastic in the runner and gate molten, while the cavity needs to be cooled; the temperature difference between the two is typically 100–200°C. In general, the design and selection of hot runner nozzles are crucial for ensuring the effective operation of the injection mold system and product quality. The appropriate nozzle type and system configuration must be selected based on specific production needs and technical requirements.
[0003] In some small factories, the working environment is poor and dusty. Most multi-head hot runner nozzles do not have shielding at the nozzle, which makes it easy for a lot of dust to adhere to the nozzle and cause it to become clogged, thus reducing production efficiency. Utility Model Content
[0004] To achieve the above objectives, this utility model proposes a multi-head hot runner nozzle.
[0005] The technical solution of this utility model is implemented as follows: A multi-head hot runner nozzle includes a nozzle base, a nozzle head fixedly connected to the bottom of the nozzle base, a dustproof mechanism provided on the nozzle base, a dustproof shell slidably connected to the outer circular surface of the nozzle base, a torsion block rotatably connected to the bottom of the dustproof shell, a gear fixedly connected to the top of the torsion block, the gear meshing with a rack plate, a baffle fixedly connected to one side of the rack plate, a first circular hole and a first sliding groove opened on the top of the baffle, a connecting column fixedly connected inside the dustproof shell, a fixing column fixedly connected inside the dustproof shell, and a second circular hole opened at the bottom of the dustproof shell.
[0006] Preferably, the connecting column is slidably connected to the first groove on the baffle.
[0007] Preferably, the fixed column is rotatably connected to the baffle, and the baffle is slidably connected to the dustproof shell.
[0008] Preferably, the inner diameters of the first circular hole on the baffle and the second circular hole on the dust cover are the same as the outer diameter of the nozzle head.
[0009] Preferably, the nozzle base is provided with a fixing mechanism, a fixing block is fixedly connected to the outer circular surface of the nozzle base, a second sliding groove is provided on the top of the fixing block, a stop block is slidably connected inside the fixing block, a moving block is slidably connected inside the second sliding groove on the fixing block, a spring is fixedly connected inside the fixing block, and a groove is provided on the top of the dustproof shell.
[0010] Preferably, one side of the movable block is fixedly connected to the stop block, and the other side of the movable block is fixedly connected to the spring.
[0011] Preferably, one side of the bottom of the stop is curved.
[0012] Preferably, the fixing block is I-shaped and is slidably connected to the groove on the dustproof shell.
[0013] This utility model has the following beneficial effects:
[0014] 1. This multi-head hot runner nozzle, by rotating the torsion block on the dust cover, drives the rack plate and baffle to rotate. The first round hole on the baffle gradually moves away from the second round hole on the dust cover, and the baffle gradually blocks the second round hole on the dust cover. When the connecting column passively slides to the end of the first groove on the baffle, the baffle can no longer rotate, and the first round hole on the baffle completely moves away from the second round hole on the dust cover, and the baffle completely blocks the second round hole on the dust cover, thus completely isolating the nozzle head from the outside world. This prevents dust in the air from adhering to the nozzle head and clogging it, thereby avoiding a decrease in production efficiency.
[0015] 2. This multi-head hot runner nozzle uses the upward movement of the dust cover to press the curved surface of the stop block, causing the stop block to move into the interior of the fixed block. When the dust cover moves out of the stop block's range, the spring force causes the stop block to reset, and the stop block then locks the dust cover onto the nozzle base. This prevents the dust cover from falling due to shaking and obstructing the nozzle head's operation, thereby improving the practicality of the multi-head hot runner nozzle. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram showing the relevant positions of the baffle in this utility model;
[0018] Figure 3 This is a schematic diagram showing the relevant positions of the fixing block of this utility model;
[0019] Figure 4 This is a schematic diagram showing the relevant positions of the second slide groove of this utility model;
[0020] Figure 5 This is a schematic diagram showing the relevant positions of the spring in this utility model;
[0021] Figure 6 This is a schematic diagram showing the relevant positions of the groove in this utility model.
[0022] The following are the labeling elements in the figure:
[0023] 1. Nozzle base; 2. Nozzle head; 3. Dustproof mechanism; 301. Dustproof shell; 302. Torsion block; 303. Gear; 304. Rack plate; 305. Baffle; 306. First round hole; 307. First slide groove; 308. Connecting column; 309. Fixing column; 310. Second round hole; 4. Fixing mechanism; 401. Fixing block; 402. Second slide groove; 403. Stop block; 404. Moving block; 405. Spring; 406. Groove. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] like Figure 1-6 As shown, the multi-head hot runner nozzle provided in this embodiment includes a nozzle base 1, a nozzle head 2 fixedly connected to the bottom of the nozzle base 1, a dustproof mechanism 3 provided on the nozzle base 1, a dustproof shell 301 slidably connected to the outer circular surface of the nozzle base 1, a torsion block 302 rotatably connected to the bottom of the dustproof shell 301, a gear 303 fixedly connected to the top of the torsion block 302, the gear 303 meshing with a rack plate 304, a baffle 305 fixedly connected to one side of the rack plate 304, a first circular hole 306 and a first sliding groove 307 opened on the top of the baffle 305, a connecting column 308 and a fixing column 309 fixedly connected inside the dustproof shell 301, and a second circular hole 310 opened at the bottom of the dustproof shell 301.
[0026] Furthermore, the connecting column 308 is slidably connected to the first groove 307 on the baffle 305.
[0027] By adopting the above technical solution, the rotation angle of the baffle 305 is limited by the sliding of the connecting column 308 in the first groove 307 on the baffle 305.
[0028] Furthermore, the fixed column 309 is rotatably connected to the baffle 305, and the baffle 305 is slidably connected to the dust cover 301.
[0029] By adopting the above technical solution, the baffle 305 rotates around the fixed column 309 as the center, and the fixed column 309 ensures the stability of the baffle 305 during the rotation process.
[0030] Furthermore, the inner diameters of the first circular hole 306 on the baffle 305 and the second circular hole 310 on the dust cover 301 are the same as the outer diameter of the nozzle head 2.
[0031] By adopting the above technical solution, dust is prevented from drifting into the dust cover 301 through the gap between the second round hole 310 on the dust cover 301 and the nozzle head 2.
[0032] Furthermore, a fixing mechanism 4 is provided on the nozzle base 1, a fixing block 401 is fixedly connected to the outer circular surface of the nozzle base 1, a second sliding groove 402 is provided on the top of the fixing block 401, a stop block 403 is slidably connected inside the fixing block 401, a moving block 404 is slidably connected inside the second sliding groove 402 on the fixing block 401, a spring 405 is fixedly connected inside the fixing block 401, and a groove 406 is provided on the top of the dustproof shell 301.
[0033] By adopting the above technical solution, the dustproof mechanism 3 is fixed on the nozzle base 1 by the fixing mechanism 4, so as to prevent the dustproof mechanism 3 from falling due to shaking and thus hindering the operation of the nozzle head 2.
[0034] Furthermore, one side of the movable block 404 is fixedly connected to the stop block 403, and the other side of the movable block 404 is fixedly connected to the spring 405.
[0035] By adopting the above technical solution, the moving block 404 and the stop block 403 are reset by the spring 405.
[0036] Furthermore, one side of the bottom of the stop 403 is curved.
[0037] By adopting the above technical solution, the block 403 can be moved into the fixed block 401 by pressing the curved surface of the dust cover 301.
[0038] Furthermore, the fixing block 401 is in the shape of an "I" and is slidably connected to the groove 406 on the dust cover 301.
[0039] By adopting the above technical solution, the movement path of the dust cover 301 is restricted by the fixing block 401, so as to prevent the dust cover 301 from moving at will.
[0040] Working principle: After the nozzle head 2 finishes working, it pushes the moving block 404 to move, causing the moving block 404 to slide in the second groove 402 on the fixed block 401. The moving block 404 will compress the spring 405 inside the fixed block 401. At the same time, the moving block 404 drives the stop block 403 to move into the fixed block 401, so that the stop block 403 no longer jams the dust cover 301. The dust cover 301 can then slide down along the fixed block 401. The nozzle head 2 gradually enters the dust cover 301 through the second round hole 310 on the dust cover 301. When the dust cover 301 can no longer slide down, the nozzle head 2 is completely inside the dust cover 301. Then, the torsion block 302 on the dust cover 301 is rotated. The torsion block 302 will drive the rack plate 304 and the baffle 305 to rotate. As the baffle plate 305 moves, the first round hole 306 on the baffle plate 305 gradually moves away from the second round hole 310 on the dustproof shell 301, and the baffle plate 305 gradually blocks the second round hole 310 on the dustproof shell 301. At the same time, the connecting post 308 inside the dustproof shell 301 will slide passively in the first sliding groove 307 on the baffle plate 305. When the connecting post 308 slides to the end of the first sliding groove 307 on the baffle plate 305, the baffle plate 305 can no longer rotate, and the first round hole 306 on the baffle plate 305 completely moves away from the second round hole 310 on the dustproof shell 301. The baffle plate 305 completely blocks the second round hole 310 on the dustproof shell 301, thus completely isolating the nozzle head 2 from the outside world. This will prevent dust in the air from adhering to the nozzle head 2, thereby preventing the nozzle head 2 from being blocked.
[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multi-head hot runner nozzle, comprising a nozzle base (1), characterized in that: The nozzle base (1) is fixedly connected to the bottom of the nozzle head (2). The nozzle base (1) is provided with a dustproof mechanism (3). The outer circular surface of the nozzle base (1) is slidably connected to a dustproof shell (301). The bottom of the dustproof shell (301) is rotatably connected to a torsion block (302). The top of the torsion block (302) is fixedly connected to a gear (303). The gear (303) meshes with a rack plate (304). A baffle (305) is fixedly connected to one side of the rack plate (304). A first circular hole (306) is opened on the top of the baffle (305). A first sliding groove (307) is opened on the top of the baffle (305). A connecting column (308) is fixedly connected inside the dustproof shell (301). A fixing column (309) is fixedly connected inside the dustproof shell (301). A second circular hole (310) is opened at the bottom of the dustproof shell (301).
2. The multi-head hot runner nozzle according to claim 1, characterized in that: The connecting column (308) is slidably connected to the first sliding groove (307) on the baffle (305).
3. A multi-head hot runner nozzle according to claim 1, characterized in that: The fixed column (309) is rotatably connected to the baffle (305), and the baffle (305) is slidably connected to the dustproof shell (301).
4. A multi-head hot runner nozzle according to claim 1, characterized in that: The inner diameters of the first circular hole (306) on the baffle (305) and the second circular hole (310) on the dust cover (301) are the same as the outer diameter of the nozzle head (2).
5. A multi-head hot runner nozzle according to claim 1, characterized in that: A fixing mechanism (4) is provided on the nozzle base (1). A fixing block (401) is fixedly connected to the outer circular surface of the nozzle base (1). A second sliding groove (402) is provided on the top of the fixing block (401). A stop block (403) is slidably connected inside the fixing block (401). A moving block (404) is slidably connected inside the second sliding groove (402) on the fixing block (401). A spring (405) is fixedly connected inside the fixing block (401). A groove (406) is provided on the top of the dustproof shell (301).
6. A multi-head hot runner nozzle according to claim 5, characterized in that: One side of the movable block (404) is fixedly connected to the stop block (403), and the other side of the movable block (404) is fixedly connected to the spring (405).
7. A multi-head hot runner nozzle according to claim 6, characterized in that: The bottom side of the stop (403) is curved.
8. A multi-head hot runner nozzle according to claim 7, characterized in that: The fixing block (401) is in the shape of an "I" and is slidably connected to the groove (406) on the dust cover (301).