Air conditioner accessory injection molding feeding anti-blocking device

Abstract

The air conditioner accessory injection molding feeding anti-blocking device comprises a frame body, a stirring device is arranged on the frame body, the stirring device comprises a top cover and a stirring tank, a stirring assembly is arranged on the upper end face of the top cover, the stirring tank is provided with a feeding port, the stirring assembly comprises a first driving source, and a second driving source is arranged on the upper end face of the top cover. A conductive slip ring and a rotating shaft are arranged at the output end of the first driving source, a plurality of stirring rods are arranged on the rotating shaft, the rotating shaft extends into the stirring tank, the conductive slip ring is electrically connected with heating elements in the stirring rods, a heating coil is arranged in the tank wall of the stirring tank, a heating net is fixedly installed at a discharging port of the stirring tank, and the stirring rods are electrically connected with the heating coils. The conductive slip ring is arranged at the output end of the driving source, so that the rotating shaft and the stirring rod are heated, and the injection molding raw materials are uniformly heated in the stirring tank.

Description

An anti-clogging device for injection molding of air conditioning parts Technical Field

[0001] This utility model relates to the field of injection molding production equipment technology, specifically to an anti-blocking device for injection molding of air conditioning parts. Background Technology

[0002] In the injection molding of some air conditioner parts, the raw material is usually directly added into the barrel of the injection molding machine. The material is heated and plasticized by the screw groove on the screw and the heating structure in the barrel, and then injection molding is performed. However, after injection molding, the residual raw material in the discharge pipe will solidify after cooling, causing barrel blockage, which is not conducive to normal production.

[0003] Therefore, it is necessary to provide an anti-clogging device for injection molding of air conditioning parts. Summary of the Invention

[0004] The purpose of this utility model is to provide an anti-blocking device for injection molding of air conditioning parts, so as to solve the problem of blockage at the injection outlet.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-blocking device for injection molding of air conditioning parts, comprising a frame, on which a stirring device is provided. The stirring device comprises a top cover and a stirring tank. A stirring assembly is provided on the upper surface of the top cover. The stirring tank has a feed inlet. The stirring assembly includes a drive source. A conductive slip ring and a rotating shaft are provided on the output end of the drive source. Multiple stirring rods are provided on the rotating shaft, which extends into the stirring tank. The conductive slip ring is electrically connected to a heating element inside the stirring rod. A heating coil is provided inside the tank wall, and a heating mesh is fixedly installed at the outlet of the stirring tank.

[0006] Preferably, two electric push rods are fixedly installed on the frame, and the two electric push rods are respectively located on both sides of the top cover, with the output end of the electric push rods fixedly connected to the top cover.

[0007] Preferably, a sub-frame is fixedly installed on the frame, and the sub-frame is fixedly connected to the mixing tank.

[0008] Preferably, the top cover is separated from the mixing tank.

[0009] Preferably, a scraper is fixedly installed on part of the stirring rod, and the scraper is fitted against the inner wall of the mixing tank.

[0010] Preferably, the frame is provided with a conveying device, and a heating box is fixedly installed on the conveying device for preheating the raw materials. A flattening roller for flattening the raw materials is provided above the output end of the conveying device. A gear one is fixedly installed at one end of the flattening roller. The conveying device includes a roller shaft near its output end, and a gear two is fixedly installed at one end of the roller shaft. The gear one and gear two are meshed together.

[0011] Preferably, a spiral blade is fixedly installed at one end of the rotating shaft, and the spiral blade is located directly above the heating mesh.

[0012] Preferably, a guide tube is fixedly installed on the lower end face of the heating grid, and the guide tube is fixedly connected to the input end of the injection molding machine, which is fixedly installed on the frame.

[0013] Preferably, a valve is provided on the feed inlet.

[0014] Preferably, the feed inlet is adapted to the output end of the conveying device.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. A conductive slip ring is installed at the output end of the drive source to heat the rotating shaft and stirring rod, so that the injection molding material is heated evenly in the mixing tank;

[0017] 2. By setting a scraper on the stirring rod, and by the close contact between the scraper and the inner wall of the mixing tank, when the raw materials enter the tank, the raw materials near the tank wall will be scraped off by the scraper and remixed with the raw materials inside;

[0018] 3. By installing a heating mesh and spiral blades at the discharge port of the mixing tank, the raw materials at the discharge port are heated by the heating mesh and pushed by the spiral blades, reducing the frequency of clogging at the discharge port;

[0019] 4. By setting a heating box and a flattening roller on the frame, the raw materials are first heated in the heating box before entering the mixing tank, which softens the raw materials to a certain extent. Then, the flattening roller flattens the raw materials, making it easier to mix them in the mixing tank. Attached Figure Description

[0020] Figure 1 is a three-dimensional structural diagram of this utility model;

[0021] Figure 2 is a side view of the structure of this utility model;

[0022] Figure 3 is a schematic diagram of the internal three-dimensional cross-sectional structure of this utility model;

[0023] Figure 4 is a side sectional view of the present invention.

[0024] Figure 5 is a schematic diagram of the enlarged structure of region A in Figure 4;

[0025] In the diagram: 1. Frame, 11. Electric push rod, 12. Subframe, 2. Conveying device, 21. Heating box, 22. Flattening roller, 23. Roller shaft, 241. Gear 1, 242. Gear 2, 3. Mixing device, 31. Top cover, 32. Mixing tank, 33. Heating coil, 34. Feed inlet, 341. Valve, 4. Mixing assembly, 41. Drive source 1, 42. Rotating shaft, 421. Conductive slip ring, 43. Mixing rod, 431. Heating element, 44. Scraper, 45. Spiral blade, 5. Heating mesh, 6. Injection molding machine, 61. Conduit. Detailed Implementation

[0026] To make the objectives, advantages, and technical solutions of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] According to Figures 1-4, this embodiment provides an anti-blocking device for injection molding of air conditioning parts, including a frame 1. A stirring device 3 is provided on the frame 1. The stirring device 3 includes a top cover 31 and a stirring tank 32. A stirring assembly 4 is provided on the upper surface of the top cover 31. The stirring tank 32 is provided with a feed inlet 34. The stirring assembly 4 includes a drive source 41, which is a motor. The drive source 41 is fixedly installed on the top cover 31. A conductive slip ring 421 and a rotating shaft 42 are provided on the output end of the drive source 41. Multiple stirring rods 43 are provided on the rotating shaft 42 to increase the stirring intensity and range, ensure that the material flows fully in the tank, and reduce the situation of excessive local temperature. The rotating shaft 42 extends into the interior of the stirring tank 32. The conductive slip ring 421 and the heating element 431 in the stirring rod 43 are connected. The rotating shaft 42 and the stirring rod 43 need to reserve internal space to arrange the heating element 431 and the wire. The wire is led out through the opening on the stirring rod 43. The conductive slip ring 421 is typically installed at the connection between the rotating shaft 42 and the power source 41. Coaxiality must be ensured during installation to prevent eccentricity from accelerating brush wear. The circuit connection process is as follows: fixed power supply → conductive slip ring (fixed end brush) → conductive slip ring (rotating end conductive ring) → internal wires of the stirring rod → heating element 431. The conductive slip ring 421 should be selected with a rated current matching, allowing for a current margin. The rotational speed of the stirring rod 43 must be compatible with the maximum allowable rotational speed of the conductive slip ring 421. The conductive slip ring 421 must be wear-resistant, and its lifespan is typically measured in rotational revolutions or service time (e.g., ≥10 million revolutions). Poor contact should be avoided to prevent heating failure. Closed-loop control should be implemented using a temperature controller or PLC to prevent overheating. Good thermal conductivity is required between the heating element 431 and the stirring rod 43 (e.g., using thermal grease or metal soldering) to avoid localized temperature differences. The mixing tank 32 is equipped with a heating coil 33 inside its wall, ensuring uniform heating within the tank and preventing localized overheating. This ensures the raw material is fully plasticized while using the lowest possible heating temperature to reduce the risk of sintering or scorching. Furthermore, a segmented heating method is employed, preheating at a lower temperature initially and then gradually increasing to the appropriate plasticizing temperature. This allows for more even heating of the material. A heating mesh 5 is fixedly installed at the discharge port of the mixing tank 32, preventing the mixed material from being difficult to discharge due to a drop in temperature at the discharge end.

[0029] Two electric push rods 11 are fixedly installed on the frame 1. The two electric push rods 11 are respectively located on both sides of the top cover 31. The output end of the electric push rod 11 is fixedly connected to the top cover 31, so as to facilitate the lifting of the top cover 31 to a certain height, and then to inspect and clean the stirring rod 42.

[0030] A sub-frame 12 is fixedly installed on the frame 1, and a mixing tank 32 is fixedly installed on the sub-frame 12.

[0031] The top cover 31 is separately disposed from the mixing tank 32 for easy disassembly.

[0032] A scraper 44 is fixedly installed on the stirring rod 43. The scraper 44 is fitted against the inner wall of the mixing tank 32 and is used to scrape off the raw materials adhering to the inner wall of the mixing tank 32.

[0033] The frame 1 is equipped with a conveying device 2, which is a chain conveyor. A heating box 21 is fixedly installed on the conveying device 2 to fully dry the raw materials, removing moisture and volatiles, and preventing local overheating and sintering caused by moisture and other impurities. At the same time, the raw materials are screened and impurities are removed to prevent foreign objects from affecting the uniformity of stirring and heating. A flattening roller 22 is installed above the output end of the conveying device 2 to flatten the raw materials. A gear 241 is fixedly installed at one end of the flattening roller 22. The conveying device 2 includes a roller shaft 23 near its output end, and a gear 242 is fixedly installed at one end of the roller shaft 23. The gear 241 and gear 242 mesh with each other, so that the rotation direction of the flattening roller 22 is opposite to the conveying direction of the conveying device 2, thereby facilitating the flattening and conveying of the raw materials.

[0034] A spiral blade 45 is fixedly installed at one end of the rotating shaft 42. The spiral blade 45 is located directly above the heating grid 5, which facilitates the return and discharge of raw materials in the mixing tank 32. The edge of the spiral blade 45 is tightly fitted with the guide tube 61. When returning materials, the spiral blade 45 rotates, so that the mixed raw materials will not leak out from the discharge port.

[0035] A conduit 61 is fixedly installed on the lower end face of the heating grid 5. The conduit 61 is fixedly connected to the input end of the injection molding machine 6, which is fixedly installed on the frame 1.

[0036] A valve 341 is provided on the feed inlet 34 to facilitate control of the feed speed and to facilitate temperature maintenance inside the mixing tank 32.

[0037] The feed inlet 34 is adapted to the output end of the conveying device 2, and the feed inlet 34 is provided to facilitate the conveying device 2 to transport the injection molding raw material into the mixing tank.

[0038] The specific operation is as follows: Place the injection molding raw material to be processed onto the conveying device 2. The raw material is dried by passing it through the heating box 21 to ensure it is dry and free of impurities. Start the drive motor of the conveying device 2 to move the raw material along the conveying direction. Simultaneously start the heating box 21 and set the preheating temperature (adjusted according to the characteristics of the raw material, usually 60~90℃) to soften the raw material for about 5~10 minutes. When the roller shaft 23 of the conveying device 2 rotates, it drives the gear 1 241 through the gear 2 242, causing the flattening roller 22 to rotate in the opposite direction (opposite to the conveying direction). When the raw material passes under the flattening roller 22, it is squeezed into a sheet of uniform thickness, which facilitates subsequent uniform mixing. The flattened raw material reaches the output end with the conveying device 2 and falls into the feed port 34 of the mixing tank 32. Slowly open the valve 341 to control the feeding speed and avoid feeding too much material at once, which would cause uneven mixing. Turn on the drive source 1 41 (motor) and set the speed to 100~200 rpm to drive the rotating shaft 42 and the mixing rod 43 to rotate.

[0039] Simultaneously, the heating element 431 inside the stirring rod 43 is powered by the conductive slip ring 421, and the heating temperature is set to 150~220℃ (adjusted according to the melting point of the raw material). At the same time, the heating coil 33 of the stirring tank 32 is turned on, and the temperature is set to 160~230℃ to achieve double-layer heating. The scraper 44 on the stirring rod 43 rotates close to the tank wall, continuously scraping off the raw material adhering to the inner wall of the stirring tank 32. The spiral blade 45 at the bottom of the rotating shaft 42 rotates at the same speed, pushing the raw material at the bottom of the tank upward to the vicinity of the heating grid 5. At the same time, some raw material can be pushed back to the middle of the tank to enhance the mixing of the upper and lower layers of raw materials.

[0040] The heating mesh 5 maintains a constant temperature (set temperature 180~250℃) to continuously heat the raw material at the outlet, preventing it from cooling and solidifying. The spiral blades 45 push the well-mixed raw material to the heating mesh 5, where it falls through the mesh into the guide tube 61 and finally into the injection molding machine 6. The feeding rate of the injection molding machine 6 is observed, and the feeding amount is finely adjusted through the valve 341 to ensure smooth discharge.

[0041] When performing a shutdown operation, stop the feeding of the conveyor 2, continue to run the stirring assembly 4, heating coil 33, and heating grid 5, empty the remaining raw materials in the stirring tank 32, turn off the power supply of the drive source 41 and the heating assembly, and finally cut off the main power supply of the whole machine.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-blocking device for injection molding of air conditioning parts, comprising a frame (1), wherein a stirring device (3) is provided on the frame (1), characterized in that: The stirring device (3) includes a top cover (31) and a stirring tank (32). The upper end of the top cover (31) is provided with a stirring assembly (4). The stirring tank (32) is provided with a feed inlet (34). The stirring assembly (4) includes a drive source (41). The output end of the drive source (41) is provided with a conductive slip ring (421) and a rotating shaft (42). The rotating shaft (42) is provided with multiple stirring rods (43). The rotating shaft (42) extends into the stirring tank (32). The conductive slip ring (421) is electrically connected to the heating element (431) inside the stirring rod (43). The stirring tank (32) is provided with a heating coil (33) inside the tank wall. The stirring tank (32) is fixedly installed with a heating mesh (5) at the discharge port of the stirring tank (32).

2. The air conditioner component injection molding anti-blocking device according to claim 1, characterized in that: Two electric push rods (11) are fixedly installed on the frame (1). The two electric push rods (11) are respectively set on both sides of the top cover (31), and the output end of the electric push rods (11) is fixedly connected to the top cover (31).

3. The air conditioner component injection molding feed anti-blocking device according to claim 1, characterized in that: A sub-frame (12) is fixedly installed on the frame (1), and the sub-frame (12) is fixedly connected to the mixing tank (32).

4. The air conditioner component injection molding feed anti-blocking device according to claim 3, characterized in that: The top cover (31) is separately disposed from the mixing tank (32).

5. The air conditioner component injection molding feed anti-blocking device according to claim 1, characterized in that: A scraper (44) is fixedly installed on the stirring rod (43), and the scraper (44) is fitted against the inner wall of the stirring tank (32).

6. The anti-blocking device for injection molding of air conditioner accessories according to claim 1, characterized in that: The frame (1) is provided with a conveying device (2), and a heating box (21) is fixedly installed on the conveying device (2). The heating box (21) is used to preheat the raw materials. A flattening roller (22) for flattening the raw materials is provided above the output end of the conveying device (2). A gear one (241) is fixedly installed at one end of the flattening roller (22). The conveying device (2) includes a roller shaft (23) near its output end. A gear two (242) is fixedly installed at one end of the roller shaft (23). The gear one (241) and the gear two (242) are meshed and connected.

7. The anti-blocking device for injection molding of air conditioner accessories according to claim 1, characterized in that: A spiral blade (45) is fixedly installed at one end of the rotating shaft (42), and the spiral blade (45) is located directly above the heating mesh (5).

8. The air conditioner component injection molding feed anti-blocking device according to claim 1, characterized in that: A conduit (61) is fixedly installed on the lower end face of the heating mesh (5). The conduit (61) is fixedly connected to the input end of the injection molding machine (6). The injection molding machine (6) is fixedly installed on the frame (1).

9. The air conditioner component injection molding feed anti-blocking device according to claim 1, characterized in that: A valve (341) is provided on the feed inlet (34).

10. The air conditioner component injection molding anti-blocking device according to claim 6, characterized in that: The feed inlet (34) is adapted to the output end of the conveying device (2).

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