Novel anti-fracture main nozzle structure
By introducing a buffer and anti-sticking mechanism into the main nozzle, the pressure fluctuation problem caused by changes in the flow channel diameter is solved, achieving smooth flow of the injection molding liquid and preventing nozzle breakage, thus improving the stability and precision of injection molding.
Patent Information
- Application Number
- CN202423266731.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The existing main nozzle is prone to breakage due to the sudden change in the flow channel diameter during the injection molding process, which causes large pressure fluctuations when the plastic melt flows.
A novel anti-breakage main nozzle structure was designed, employing a buffer mechanism and an anti-sticking mechanism. The buffer mechanism uses two sets of conical buffer nets to buffer pressure fluctuations, while the anti-sticking mechanism uses a rotating rod and scraper assembly to remove impurities, ensuring smooth flow of the injection molding liquid.
It effectively reduces pressure surges caused by spatial changes, improves the flow stability of the injection molding fluid, reduces the risk of nozzle breakage, and improves the precision and quality of injection molding.
Smart Images
Figure CN223573669U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of main nozzle, especially to a novel anti-fracture main nozzle structure. BACKGROUND
[0002] When the injection molding machine works, the plastic raw materials need to be heated and melted, and then pushed by the screw to be injected into the cavity of the mold through the nozzle to form the required plastic products. The anti-fracture main nozzle is specially designed to prevent the nozzle from breaking during the injection molding process, ensuring that the injection molding process can be stable and continuous.
[0003] The existing main nozzle is connected to the barrel of the injection molding machine and the mold gate, and special process treatment is used at the connection part, such as thickening, increasing the strength of the connection thread, setting a sealing and buffering structure, etc. For example, quenching and other heat treatment is performed at the connection thread to increase the hardness and wear resistance of the thread.
[0004] However, in actual use, the sudden change in the diameter of the internal flow channel of the nozzle will cause large pressure fluctuations when the plastic melt flows, such as when the flow channel suddenly and sharply narrows from a large diameter to a small diameter. The flow rate will suddenly increase and the pressure will sharply rise when the melt flows through this place, causing a strong impact force on the nozzle wall. Long-term effects can easily cause the nozzle to break, so a novel anti-fracture main nozzle structure is proposed to solve the above problems. SUMMARY
[0005] To make up for the above shortcomings, the utility model provides a novel anti-fracture main nozzle structure, which solves the problem of "sudden change in the diameter of the internal flow channel of the nozzle, which will cause large pressure fluctuations when the plastic melt flows".
[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a novel anti-fracture main nozzle structure, comprising a main nozzle body, a connecting port is formed on the right side of the main nozzle body, an opening is formed on the left side of the outer wall of the main nozzle body, a slot is formed on the inner wall of the connecting port, a buffer mechanism is arranged inside the main nozzle body, an anti-sticking mechanism is arranged inside the buffer mechanism, the buffer mechanism comprises a connecting plate, the connecting plate is slidingly connected in the sliding groove formed on the inner wall of the connecting port, a side plate is fixedly connected to the outer wall of the connecting plate, a bolt is threadedly connected to the outer wall of the side plate, the top end of the bolt is threadedly connected to the inner wall of the connecting port, a buffer net A is fixedly connected to the left side of the outer wall of the connecting plate, a connecting box is fixedly connected to the left side of the buffer net A, and a buffer net B is fixedly connected to the left side of the outer wall of the connecting box.
[0007] As a further description of the above technical scheme: the buffer net A and the buffer net B are both conical, the buffer net A is arranged from large to small, and the buffer net B is arranged from small to large.
[0008] As the further description of the above technical solution: the outer wall of the buffer net B is fixedly connected with the discharge nozzle, and the top end of the discharge nozzle extends to the left opening of the main nozzle body.
[0009] As the further description of the above technical solution: the anti-sticking mechanism comprises a rotating rod A, the top end of the connecting box is rotatably connected with the rotating rod A, the top end of the rotating rod A is fixedly connected with a knob, the outer wall of the connecting box is rotatably connected with a rotating rod B, and the outer wall of the rotating rod B is fixedly connected with a conical tooth B.
[0010] As the further description of the above technical solution: the right side of the rotating rod B is fixedly connected with a rotating disc, the outer wall of the rotating disc is fixedly connected with a scraping rod, and the outer wall of the scraping rod is in contact with the inner wall of the buffer net A.
[0011] As the further description of the above technical solution: the bottom of the rotating rod A is fixedly connected with a conical tooth A, and the outer wall of the conical tooth A is engaged with the outer wall of the rotating rod B.
[0012] As the further description of the above technical solution: the gap of the buffer net A is smaller than that of the buffer net B, the top end of the discharge nozzle is conically arranged, and the outer wall is in contact with the left opening of the main nozzle body.
[0013] As the further description of the above technical solution: the outer wall of the main nozzle body is fixedly connected with a hexagonal nut, and the outer wall of the connecting port is provided with a thread.
[0014] The utility model has the following beneficial effects:
[0015] 1、in the utility model, the buffer mechanism, the buffer net B is conical from small to big, the injection liquid that the buffer net A preliminary filters flows to it, because the gap is big, the flow rate is accelerated, simultaneously according to the principle of fluid mechanics, reduces the injection liquid pressure degree inside the main nozzle body, the size of two groups of buffer nets gradually changes combination, greatly reduces the pressure mutation caused by space change, guarantees the injection liquid smooth flow, reduces the risk of main nozzle fracture.
[0016] 2、in the utility model, the anti-sticking mechanism is designed according to the condensation problem after the impurity of buffer net A is intercepted, the operator rotates the knob, drives the rotating disc to rotate through the engagement transmission of rotating rod A, conical tooth A, rotating rod B and conical tooth B, drives the scraping rod to rotate at high speed closely adhering to the inner wall of buffer net A, and the condensation impurities are scraped off in time, so that they are further processed in the injection liquid flow, and the filtering performance of buffer net A is ensured to be good. DRAWINGS
[0017] Figure 1 The utility model proposes a whole schematic view of a novel anti-fracture main nozzle structure;
[0018] Figure 2 A right view schematic diagram of a novel anti-fracture main nozzle structure is provided in the utility model.
[0019] Figure 3 An internal section schematic diagram of a novel anti-fracture main nozzle structure is provided in the utility model.
[0020] Legend:
[0021] 1, main nozzle body; 2, hexagonal nut; 3, connecting port; 4, buffer mechanism; 411, connecting plate; 412, side plate; 413, bolt; 414, buffer net A; 415, connecting box; 416, buffer net B; 417, discharge nozzle; 5, anti-sticking mechanism; 511, rotating rod A; 512, knob; 513, conical tooth A; 514, rotating rod B; 515, conical tooth B; 516, scraping rod; 517, rotating disc. Specific implementation
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0023] Reference Figure 1 - Figure 3The utility model provides an embodiment: a novel prevent breaking main nozzle structure, including main nozzle body 1, the right side of main nozzle body 1 is provided with connecting port 3, the left side of the outer wall of main nozzle body 1 is provided with opening, the inner wall of connecting port 3 is provided with slot, the inside of main nozzle body 1 is provided with buffer mechanism 4, the inside of buffer mechanism 4 is provided with anti -sticky mechanism 5, buffer mechanism 4 includes connecting plate 411, connecting plate 411 slidingly connects in the sliding slot of the inner wall of connecting port 3, this sliding connection mode makes connecting plate 411 can accurate positioning in the installation process, ensure the installation accuracy of whole buffer mechanism 4, simultaneously in the equipment operation process, even if be subjected to certain degree of vibration or impact, connecting plate 411 still can stably keep in the position of being determined, cannot displace, the outer wall of connecting plate 411 is fixedly connected with side plate 412, the outer wall of side plate 412 is threadedly connected with bolt 413, the top of bolt 413 is threadedly connected in the inner wall of connecting port 3, the reliable fixing of connecting plate 411, further enhanced the stability of whole buffer mechanism 4 in main nozzle body 1, the left side of the outer wall of connecting plate 411 is fixedly connected with buffer net A 414, the left side of buffer net A 414 is fixedly connected with connecting box 415, the left side of the outer wall of connecting box 415 is fixedly connected with buffer net B 416, buffer net A 414 and buffer net B 416 are all conical, buffer net A 414 is set from big to small, this special structure design makes buffer net A 414 can efficiently intercept the larger particle impurities in injection liquid, when injection liquid is with certain flow rate and rushes into main nozzle, larger particle impurities impact on buffer net A 414 under the inertia, since the gap of buffer net A 414 is small, these impurities are effectively blocked, avoid entering the mold, buffer net B 416 is set from small to big, the ingenious combination of the two groups of buffer nets from big to small, again from small to big, according to the principle of fluid mechanics, greatly reduces the pressure mutation caused by space change, makes the flow of injection liquid in main nozzle more stable, smooth, effectively reduces the risk of main nozzle breakage due to pressure impact, the left side of the outer wall of buffer net B 416 is fixedly connected with discharge nozzle 417, the top of discharge nozzle 417 extends to the left opening of main nozzle body 1, the gap of buffer net A 414 is less than the gap of buffer net B 416, the top of discharge nozzle 417 is conical setting, and the outer wall is in contact with the left opening of main nozzle body 1, ensure that the injection liquid after buffering, filtering can be accurately, concentratedly shot, improve the precision and quality of injection molding, the outer wall of main nozzle body 1 is fixedly connected with hexagon nut 2, the outer wall of connecting port 3 is provided with screw thread.
[0024] Refer to Figure 3The anti-sticking mechanism 5 comprises a rotating rod A511, the top end of the connecting box 415 is rotatably connected with the rotating rod A511, the top end of the rotating rod A511 is fixedly connected with a knob 512, the outer wall right side of the connecting box 415 is rotatably connected with a rotating rod B514, the outer wall left side of the rotating rod B514 is fixedly connected with a conical gear B515, the right side of the rotating rod B514 is fixedly connected with a rotating disc 517, the outer wall of the rotating disc 517 is fixedly connected with a scraping rod 516, and the outer wall of the scraping rod 516 is in contact with the inner wall of the buffer net A414. When the impurities intercepted by the buffer net A414 are condensed with the buffer net A414, the operator rotates the knob 512 to drive the rotating rod A511 to rotate, the rotating rod A511 is in meshing transmission with the conical gear B515 on the rotating rod B514 through the conical gear A513, and then the rotating rod B514 is driven to rotate, the rotating rod B514 drives the rotating disc 517 to rotate, and the rotating disc 517 drives a plurality of scraping rods 516 to rotate and abut against the inner wall of the buffer net A414, so that the impurities condensed on the inner wall of the buffer net A414 are scraped off, preventing the impurities from being accumulated on the buffer net A414 for a long time to cause the filtering performance of the buffer net A414 to be reduced. The bottom of the rotating rod A511 is fixedly connected with the conical gear A513, and the outer wall of the conical gear A513 is in meshing transmission with the outer wall of the rotating rod B514.
[0025] Working principle: the outer wall of the main nozzle body 1 is connected with a hexagonal nut 2 to facilitate the installation and connection of the main nozzle, the inner wall of the connecting port 3 is provided with a slot to facilitate the replacement of the internal buffer mechanism 4, the connecting plate 411 is integrally inserted into the sliding groove of the connecting port 3 and is fixed by the bolts 413, the buffer net A414 and the buffer net B416 are sequentially connected to the left side of the connecting plate 411, when the injection liquid flows into the main nozzle, the buffer net A414 blocks the larger particles in the injection liquid, when the injection liquid passes through the buffer net A414, the injection liquid flows from the gap of the outer wall of the buffer net A414 to the buffer net B416, the gap of the buffer net B416 is larger than that of the buffer net A414, so that the flow rate is accelerated and the pressure degree of the injection liquid in the main nozzle body 1 is reduced, the pressure after the space change is greatly reduced by the two groups of buffer nets from large to small and from small to large, and the impurities intercepted by the buffer net A414 are condensed with the buffer net A414, the rotating rod A511 is rotated to drive the rotating disc 517 at the top end of the rotating rod B514 to rotate through the connection of the conical gear group, a plurality of scraping rods 516 are driven to rotate and abut against the inner wall of the buffer net A414 by the rotating disc 517, the impurities are prevented from being condensed, and the overall buffer mechanism 4 can be replaced regularly to avoid the internal impurities from being accumulated.
[0026] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.
Claims
1. A novel anti-breakage main nozzle structure, comprising a main nozzle body (1), characterized in that: The main nozzle body (1) has a connection port (3) on its right side, and an opening on the left side of the outer wall of the main nozzle body (1). The inner wall of the connection port (3) has a slot. A buffer mechanism (4) is provided inside the main nozzle body (1), and an anti-sticking mechanism (5) is provided inside the buffer mechanism (4). The buffer mechanism (4) includes a connecting plate (411), which is slidably connected to a groove on the inner wall of the connection port (3). A side plate (412) is fixedly connected to the outer wall of the connecting plate (411). A bolt (413) is threadedly connected to the outer wall of the side plate (412). The top end of the bolt (413) is threadedly connected to the inner wall of the connecting port (3). A buffer net A (414) is fixedly connected to the left side of the outer wall of the connecting plate (411). A connecting box (415) is fixedly connected to the left side of the buffer net A (414). A buffer net B (416) is fixedly connected to the left side of the outer wall of the connecting box (415).
2. The novel anti-fracture main nozzle structure according to claim 1, characterized in that: Both buffer net A (414) and buffer net B (416) are conical in shape. Buffer net A (414) is set from large to small, and buffer net B (416) is set from small to large.
3. The novel anti-fracture main nozzle structure according to claim 1, characterized in that: A discharge nozzle (417) is fixedly connected to the left side of the outer wall of the buffer net B (416), and the top of the discharge nozzle (417) extends outward from the left opening of the main nozzle body (1).
4. The novel anti-fracture main nozzle structure according to claim 1, characterized in that: The anti-adhesion mechanism (5) includes a rotating rod A (511), the top of the connecting box (415) is rotatably connected to the rotating rod A (511), the top of the rotating rod A (511) is fixedly connected to a knob (512), the right side of the outer wall of the connecting box (415) is rotatably connected to the rotating rod B (514), and the left side of the outer wall of the rotating rod B (514) is fixedly connected to a conical tooth B (515).
5. The novel anti-fracture main nozzle structure according to claim 4, characterized in that: A turntable (517) is fixedly connected to the right side of the rotating rod B (514), and a scraper (516) is fixedly connected to the outer wall of the turntable (517). The outer wall of the scraper (516) is in contact with the inner wall of the buffer net A (414).
6. The novel anti-fracture main nozzle structure according to claim 4, characterized in that: The bottom of the rotating rod A (511) is fixedly connected to a conical tooth A (513), and the outer wall of the conical tooth A (513) meshes with the outer wall of the rotating rod B (514).
7. The novel anti-fracture main nozzle structure according to claim 3, characterized in that: The gaps in the buffer net A (414) are smaller than those in the buffer net B (416), and the top of the discharge nozzle (417) is tapered, with its outer wall in contact with the left opening of the main nozzle body (1).
8. The novel anti-fracture main nozzle structure according to claim 1, characterized in that: The outer wall of the main nozzle body (1) is fixedly connected with a hexagonal nut (2), and the outer wall of the connection port (3) is threaded.