High-pressure spraying device for sprue bush

Abstract

The high-pressure spraying device comprises a metal nozzle, a flexible guide pipe and a fixing frame, a reciprocating lead screw and a transmission shaft are arranged on the fixing frame in a rotating mode, a lifting frame is arranged on the reciprocating lead screw through a limiting mechanism in a threaded sleeving mode, and a connecting groove corresponding to the lifting frame is formed in the outer wall of the metal nozzle. A lifting frame is arranged on the fixing frame, a first gear is rotationally arranged on the lifting frame, the first gear is connected with the metal nozzle through a rotating mechanism, a synchronous sleeve is arranged on the fixing frame through a stabilizing mechanism, the synchronous sleeve is connected with the first gear through a connecting mechanism, and a driving motor is fixedly arranged on the fixing frame. Through the combination of the reciprocating lead screw and gear transmission, the metal nozzle can move up and down to cover the full length of a sprue bush channel and can also rotate to achieve spraying, spraying blind areas are avoided, the uniformity and integrity of a coating are guaranteed, and the surface performance of a sprue bush is improved.

Description

Technical Field

[0001] This utility model relates to the field of mold manufacturing and surface treatment technology, and in particular to a high-pressure spraying device for sprue bushings. Background Technology

[0002] As a core component of injection molds, the coating quality of the sprue bushing directly affects the molding accuracy of plastic products and the service life of the mold. High-pressure spraying technology is a key process to improve the wear resistance, corrosion resistance, and demolding performance of the sprue bushing, but existing spraying equipment still has significant technical bottlenecks.

[0003] Most current gate bushing spraying equipment uses a single motion mode, making it difficult to achieve efficient and uniform spraying of the internal narrow channels. For example, devices using linear reciprocating spraying can only move the nozzle along the channel axis, resulting in a large number of spraying blind spots on the circumference of the gate bushing's inner wall. Equipment relying on manual rotation of the gate bushing is not only inefficient and labor-intensive, but also susceptible to human error, resulting in poor control of the gate bushing's rotation speed and angle during spraying, easily causing coating thickness fluctuations, leading to insufficient wear resistance in localized areas or paint waste. To improve these aspects, a high-pressure spraying device for gate bushings is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-pressure spraying device for sprue sleeves.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-pressure spraying device for a sprue bushing includes a metal nozzle, a flexible conduit, and a fixed frame. A reciprocating screw and a drive shaft are rotatably mounted on the fixed frame. A lifting frame is threaded onto the reciprocating screw via a limiting mechanism. A connecting groove corresponding to the lifting frame is provided on the outer wall of the metal nozzle. A first gear is rotatably mounted on the lifting frame and is connected to the metal nozzle via a rotating mechanism. A synchronizing sleeve is mounted on the fixed frame via a stabilizing mechanism and is connected to the first gear via a connecting mechanism. A drive motor is fixedly mounted on the fixed frame and is connected to the drive shaft and the synchronizing sleeve via a transmission mechanism.

[0007] Preferably, the limiting mechanism includes a limiting rod fixedly mounted on the fixed frame, and the limiting rod slides through the lifting frame.

[0008] Preferably, the rotating mechanism includes a gear ring fixedly mounted on the metal nozzle, the gear ring meshing with a first gear.

[0009] Preferably, the stabilizing mechanism includes a stabilizing frame fixedly mounted on a fixed frame, and the stabilizing frame is slidably sleeved outside the synchronizing sleeve.

[0010] Preferably, the connecting mechanism includes a synchronizing rod fixedly mounted on the first gear, and the synchronizing sleeve is slidably sleeved on the outside of the synchronizing rod.

[0011] Preferably, the transmission mechanism includes a second gear fixedly mounted on the output shaft of the drive motor, and a third gear and a fourth gear fixedly mounted on the transmission shaft and the synchronizing sleeve, respectively, wherein the second gear meshes with the third gear and the fourth gear.

[0012] The beneficial effects of this utility model are:

[0013] 1. By combining reciprocating screw and gear transmission, the metal nozzle can move up and down to cover the entire length of the sprue bushing channel, and can also rotate to achieve spraying, avoiding blind spots in spraying, ensuring the uniformity and integrity of the coating, and improving the surface performance of the sprue bushing.

[0014] 2. The limit rod limits the lifting frame, and the stabilizer supports the synchronous sleeve, ensuring that each component remains stable during movement, reducing swaying and offset, avoiding spraying deviations caused by component instability, and improving the reliability of equipment operation.

[0015] 3. The overall structure of the device is reasonably designed, and the components are easy to install and disassemble. The drive motor and gear transmission system are mature and reliable, and the daily maintenance is easy. It has a high degree of automation, and the spraying operation can be realized by controlling the drive motor, reducing manual intervention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a high-pressure spraying device for a gating sleeve proposed in this utility model;

[0017] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A;

[0018] Figure 3 for Figure 1 A schematic diagram of the vertical section structure;

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point B.

[0020] In the diagram: 1 Metal nozzle, 2 Flexible conduit, 3 Lifting frame, 4 Gear ring, 5 Fixed frame, 6 Reciprocating screw, 7 Limiting rod, 8 First gear, 9 Synchronizing rod, 10 Stabilizing frame, 11 Synchronizing sleeve, 12 Drive shaft, 13 Drive motor, 14 Second gear, 15 Third gear, 16 Fourth gear, 17 Connecting groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-4 A high-pressure spraying device for a sprue bushing includes a metal nozzle 1, a flexible conduit 2, and a fixed frame 5. The flexible conduit 2 is rotatably connected to the metal nozzle 1 and is connected to a high-pressure spraying machine. A reciprocating screw 6 and a drive shaft 12 are rotatably mounted on the fixed frame 5. A lifting frame 3 is threaded onto the reciprocating screw 6 through a limiting mechanism. The outer wall of the metal nozzle 1 is provided with a connecting groove 17 corresponding to the lifting frame 3. There are two connecting grooves 17. A portion of the lifting frame 3 is circular and located outside the metal nozzle 1. Its vertical cross-section is U-shaped. When it is located in the connecting groove 17, the metal nozzle 1 can rotate relative to the lifting frame 3, but it will not move vertically relative to the lifting frame 3.

[0023] A first gear 8 is rotatably mounted on the lifting frame 3. The first gear 8 is connected to the metal nozzle 1 through a rotating mechanism. A synchronous sleeve 11 is mounted on the fixed frame 5 through a stabilizing mechanism. The synchronous sleeve 11 is connected to the first gear 8 through a connecting mechanism. A drive motor 13 is fixedly mounted on the fixed frame 5. The drive motor 13 is connected to the drive shaft 12 through a first transmission mechanism. The drive motor 13 is connected to the drive shaft 12 and the synchronous sleeve 11 through a transmission mechanism.

[0024] The limiting mechanism includes a limiting rod 7 fixedly mounted on the fixed frame 5, which slides through the lifting frame 3. The limiting rod 7 limits the lifting frame 3, preventing it from rotating along with the reciprocating screw 6.

[0025] The rotating mechanism includes a gear ring 4 fixedly mounted on the metal nozzle 1, which meshes with a first gear 8. When the first gear 8 rotates, it can work with the gear ring 4 to drive the metal nozzle 1 to rotate relative to the lifting frame 3.

[0026] The stabilizing mechanism includes a stabilizing frame 10 fixedly mounted on the fixed frame 5, and the stabilizing frame 10 is slidably sleeved on the outside of the synchronizing sleeve 11. The stabilizing frame 10 ensures the stability of the synchronizing sleeve 11 and prevents it from shaking.

[0027] The connecting mechanism includes a synchronizing rod 9 fixedly mounted on the first gear 8, and a synchronizing sleeve 11 slidably sleeved on the outside of the synchronizing rod 9. The synchronizing rod 9 is a hexagonal prism, and the internal shape of the synchronizing sleeve 11 corresponds to that of the synchronizing rod 9. This design ensures that the synchronizing sleeve 11 and the synchronizing rod 9 rotate synchronously.

[0028] The transmission mechanism includes a second gear 14 fixedly mounted on the output shaft of the drive motor 13, and a third gear 15 and a fourth gear 16 fixedly mounted on the drive shaft 12 and the synchronous sleeve 11, respectively. The second gear 14 meshes with the third gear 15 and the fourth gear 16. By setting the above gear assembly, the synchronous rotation of the drive shaft 12, the reciprocating lead screw 6, and the synchronous sleeve 11 can be realized after the drive motor 13 is started.

[0029] Components not specifically described in this utility model are all standard parts and can be purchased from the market. The specific connection methods for each component all employ mature methods from the prior art, and will not be detailed here. Content not described in detail in this specification belongs to prior art known to those skilled in the art.

[0030] When this utility model is in use, after the drive motor 13 starts, the second gear 14 on its output shaft rotates synchronously. Since the second gear 14 meshes with the third gear 15 on the transmission shaft 12 and the fourth gear 16 on the synchronous sleeve 11, it drives the transmission shaft 12 and the synchronous sleeve 11 to rotate synchronously. When the transmission shaft 12 rotates, the reciprocating screw 6 connected to it also rotates. Under the action of the limit rod 7 in the limit mechanism, the lifting frame 3 will not rotate with the reciprocating screw 6, but will move up and down linearly along the limit rod 7 under its thread drive. The lifting frame 3 is connected to the metal nozzle 1 through the connecting groove 17. When the lifting frame 3 moves up and down, the metal nozzle 1 moves vertically accordingly. At the same time, the synchronous sleeve 11 rotates, driving the first gear 8 to rotate through the synchronous rod 9 of the internal hexagonal column (the first gear 8 and the synchronous rod 9 move up and down synchronously with the lifting frame 3, but the synchronous rod 9 never disengages from the synchronous sleeve 11). The first gear 8 meshes with the gear ring 4 on the metal nozzle 1, thereby driving the metal nozzle 1 to rotate relative to the lifting frame 3. Thus, the metal nozzle 1 rotates synchronously during vertical movement, achieving comprehensive spraying of the internal channel of the sprue bushing from the inlet to the outlet, and at all circumferential angles.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-pressure spraying device for a sprue bushing, comprising a metal nozzle (1), a flexible conduit (2), and a fixing frame (5), characterized in that, The fixed frame (5) is rotatably provided with a reciprocating screw (6) and a transmission shaft (12). The reciprocating screw (6) is threadedly fitted with a lifting frame (3) through a limiting mechanism. The outer wall of the metal nozzle (1) is provided with a connecting groove (17) corresponding to the lifting frame (3). The lifting frame (3) is rotatably provided with a first gear (8). The first gear (8) is connected to the metal nozzle (1) through a rotating mechanism. The fixed frame (5) is provided with a stabilizing mechanism and a synchronous sleeve (11). The synchronous sleeve (11) is connected to the first gear (8) through a connecting mechanism. The fixed frame (5) is fixedly provided with a drive motor (13). The drive motor (13) is connected to the transmission shaft (12) and the synchronous sleeve (11) through a transmission mechanism.

2. The high-pressure spraying device for a gating sleeve according to claim 1, characterized in that, The limiting mechanism includes a limiting rod (7) fixedly mounted on the fixed frame (5), and the limiting rod (7) slides through the lifting frame (3).

3. A high-pressure spraying device for a gating sleeve according to claim 2, characterized in that, The rotating mechanism includes a gear ring (4) fixedly mounted on a metal nozzle (1), which meshes with a first gear (8).

4. A high-pressure spraying device for a gating sleeve according to claim 3, characterized in that, The stabilizing mechanism includes a stabilizing frame (10) fixedly mounted on a fixed frame (5), and the stabilizing frame (10) is slidably sleeved on the outside of the synchronizing sleeve (11).

5. A high-pressure spraying device for a gating sleeve according to claim 4, characterized in that, The connecting mechanism includes a synchronizing rod (9) fixedly mounted on the first gear (8), and the synchronizing sleeve (11) is slidably mounted on the outside of the synchronizing rod (9).

6. A high-pressure spraying device for a gating sleeve according to claim 5, characterized in that, The transmission mechanism includes a second gear (14) fixedly mounted on the output shaft of the drive motor (13), and a third gear (15) and a fourth gear (16) fixedly mounted on the transmission shaft (12) and the synchronous sleeve (11), respectively. The second gear (14) meshes with the third gear (15) and the fourth gear (16).

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