A raw material drying device for automobile plastic injection

Abstract

The utility model provides a kind of raw material drying device for automobile plastic injection molding, it is related to drying field.The utility model provides stable support for the whole device by bottom plate, drying cylinder is as core drying space, the cooperation of stirring frame and stirring rod can be fully stirred to raw material in drying cylinder under motor drive, avoid raw material accumulation, let raw material and hot air realize overall contact, substantially improve drying efficiency and raw material moisture content consistency.Gas inlet, gas outlet and the collocation of first gas collecting hood, second gas collecting hood, can make hot air after heating cylinder by electric heating wire and be transported to by air pump, uniformly enter drying cylinder and act on raw material, simultaneously, odorous waste gas is centrally introduced into deodorization box, and odorous substance is adsorbed by activated carbon adsorption plate, the device has the advantages of good drying effect and good deodorization effect.

Description

Technical Field

[0001] This utility model relates to the field of drying, and in particular to a drying device for raw materials used in the injection molding of automotive plastic parts. Background Technology

[0002] In the injection molding production of automotive plastic parts, granular raw materials (such as ABS, PP, PA, etc.) need to be dried to remove moisture and prevent defects such as bubbles and shrinkage cavities in the injection molded products. Existing drying equipment mostly uses a single hot air circulation structure, which has the following problems: 1. Poor drying uniformity: Raw materials tend to accumulate in the drying chamber, and hot air only acts on the surface. The moisture in the internal raw materials is difficult to evaporate quickly, resulting in low drying efficiency and inconsistent moisture content of raw materials. II. Odor diffusion problem: During the drying process, low-molecular-weight organic compounds and residual monomers volatilized from the raw materials diffuse with the hot air, which not only pollutes the workshop environment, but may also adhere to the surface of the raw materials and affect the odor performance of the subsequent injection molded parts. To address the aforementioned shortcomings, an integrated device that combines "high-efficiency drying" and "odor removal" needs to be designed to improve raw material processing efficiency and production convenience. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a raw material drying device for injection molding of automotive plastic parts.

[0004] This utility model provides a raw material drying device for injection molding of automotive plastic parts, comprising: a base plate, a drying cylinder arranged above the base plate, a stirring frame rotatably connected inside the drying cylinder, the surface of the stirring frame being in contact with the inner wall of the drying cylinder, a motor fixedly connected to the left side of the drying cylinder via a bracket, the output end of the motor being fixedly connected to the stirring frame, an air inlet at the bottom of the drying cylinder, an air outlet at the top of the drying cylinder, a first air collecting hood fixedly connected to the bottom of the drying cylinder, the first air collecting hood communicating with the air inlet, and a first air collecting hood fixedly connected to the top of the drying cylinder. A second gas collection hood is fixedly connected to the base plate, and the second gas collection hood is connected to the air outlet. An air pump is fixedly connected to the top of the base plate, and the air outlet of the air pump is connected to a heating cylinder. An electric heating wire is fixedly connected inside the heating cylinder. The air outlet of the heating cylinder is connected to the air inlet of the first gas collection hood through a flexible hose. A deodorizing box is connected to the top of the second gas collection hood. An activated carbon adsorption plate is slidably connected inside the deodorizing box. There are several activated carbon adsorption plates, and the front of the activated carbon adsorption plate extends to the front of the deodorizing box. An exhaust pipe is connected to the top of the deodorizing box.

[0005] Preferably, a support plate is fixedly connected to the left side of the top of the base plate, a support frame is hinged to the top of the support plate, the support frame is fixedly connected to the drying cylinder, sliding grooves are provided on the front and rear sides of the top of the base plate, and a drive frame is slidably connected inside the sliding grooves. A connecting rod is hinged to the top of the drive frame, and the end of the connecting rod away from the drive frame is hinged to the right side of the bottom of the drying cylinder. An electric telescopic rod is fixedly connected to the top of the base plate, and the output end of the electric telescopic rod is fixedly connected to the drive frame.

[0006] Preferably, the air inlet of the air pump is fixedly connected with a dustproof net.

[0007] Preferably, a protective cover is fixedly connected to the left side of the drying cylinder, and the motor is located inside the protective cover.

[0008] Preferably, a sealing ring is fixedly connected inside the deodorizing box, the inner wall of the sealing ring is in contact with the activated carbon adsorption plate, and a handle is fixedly connected to the front of the activated carbon adsorption plate.

[0009] Preferably, the top of the drying cylinder is connected to a feed pipe, the right side of the drying cylinder is connected to a discharge pipe, and the right side of the discharge pipe is connected to a discharge valve.

[0010] Preferably, the top of the feed tube is threaded with a sealing cap, the surface of the sealing cap is provided with anti-slip protrusions, and a handle is fixedly connected to the top of the sealing cap.

[0011] Preferably, a stirring rod is fixedly connected to the surface of the stirring rack, and the number of stirring rods is several.

[0012] Compared with related technologies, the raw material drying device for injection molding of automotive plastic parts provided by this utility model has the following beneficial effects: This invention uses a base plate to provide stable support for the entire device. The drying cylinder serves as the core drying space, and the stirring rack, driven by a motor, can fully stir the raw materials inside the drying cylinder, preventing material accumulation and ensuring full contact between the raw materials and hot air. This effectively solves the problems of uneven drying and difficulty in evaporating internal moisture in traditional devices, significantly improving drying efficiency and consistency of raw material moisture content. The combination of air inlet and outlet ports with the first and second air collection hoods allows hot air, delivered by the air pump to the heating cylinder and heated by electric heating wires, to evenly enter the drying cylinder and act on the raw materials. At the same time, waste gas carrying odors is concentrated and introduced into the deodorization box, where activated carbon adsorption plates adsorb odor substances, preventing odor diffusion and pollution of the workshop environment, and also preventing odors from adhering to the raw materials and affecting the odor performance of subsequent injection molded parts. This achieves integrated high-efficiency drying and odor removal, improving raw material processing effect and production convenience. This device has the advantages of good drying effect and good odor removal effect.

[0013] 2. This utility model provides a stable and adjustable support foundation for the drying cylinder through the hinged connection between the support plate and the support frame. The combination of the slide groove, drive frame, connecting rod, and electric telescopic rod allows the drive frame to slide within the slide groove via the electric telescopic rod, which in turn drives the connecting rod to rotate the drying cylinder around the hinge point between the support plate and the support frame. This enables flexible adjustment of the drying cylinder's tilt angle. This design allows the drying cylinder to be at a suitable tilt angle during discharge, allowing the raw materials to exit the drying cylinder more smoothly, reducing the amount of raw materials remaining in the drying cylinder, and preventing residual raw materials from affecting the drying quality of subsequent batches of raw materials. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front sectional view of the drying cylinder structure of this utility model; Figure 3 This is a schematic diagram of the first gas collection hood structure of this utility model; Figure 4 This is a schematic diagram of the stirring rack and stirring rod of this utility model; Figure 5 This is a schematic diagram of the deodorizing box structure of this utility model.

[0015] In the diagram: 1. Base plate; 2. Drying cylinder; 3. Feed pipe; 4. Discharge pipe; 5. Discharge valve; 6. Stirring rack; 7. Stirring rod; 8. Motor; 9. Air pump; 10. First gas collection hood; 11. Second gas collection hood; 12. Heating cylinder; 13. Deodorizing box; 14. Activated carbon adsorption plate; 15. Exhaust pipe; 16. Sealing ring; 17. Sealing cover; 18. Protective cover; 19. Support plate; 20. Support frame; 21. Electric telescopic rod; 22. Drive frame; 23. Connecting rod; 24. Dustproof net. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please refer to the following: Figures 1 to 5A drying device for raw materials used in automotive plastic injection molding includes: a base plate 1; a drying cylinder 2 is mounted on top of the base plate 1; a stirring rack 6 is rotatably connected inside the drying cylinder 2, with the surface of the stirring rack 6 adhering to the inner wall of the drying cylinder 2; a motor 8 is fixedly connected to the left side of the drying cylinder 2 via a bracket, and the output end of the motor 8 is fixedly connected to the stirring rack 6; an air inlet is provided at the bottom of the drying cylinder 2, and an air outlet is provided at the top of the drying cylinder 2; a first gas collecting hood 10 is fixedly connected to the bottom of the drying cylinder 2 and communicates with the air inlet; a second gas collecting hood 11 is fixedly connected to the top of the drying cylinder 2 and communicates with the air outlet; an air pump 9 is fixedly connected to the top of the base plate 1; the air outlet of the air pump 9 is connected to a heating cylinder 12; an electric heating wire is fixedly connected inside the heating cylinder 12; the air outlet of the heating cylinder 12 is connected to the air inlet of the first gas collecting hood 10 via a flexible hose; and a de-gassing device is connected to the top of the second gas collecting hood 11. The odor box 13 has several activated carbon adsorption plates 14 slidably connected inside. The front of the activated carbon adsorption plates 14 extends to the front of the odor box 13. The top of the odor box 13 is connected to an exhaust pipe 15. The electric telescopic rod 21 in this application has a self-locking function. The surface of the drying cylinder 2 is provided with a heat insulation layer, which is not shown. All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art, and this application will not describe them in detail.

[0018] refer to Figure 1 As shown, a support plate 19 is fixedly connected to the left side of the top of the base plate 1. A support frame 20 is hinged to the top of the support plate 19. The support frame 20 is fixedly connected to the drying cylinder 2. Slide grooves are provided on the front and rear sides of the top of the base plate 1. A drive frame 22 is slidably connected inside the slide grooves. A connecting rod 23 is hinged to the top of the drive frame 22. The end of the connecting rod 23 away from the drive frame 22 is hinged to the right side of the bottom of the drying cylinder 2. An electric telescopic rod 21 is fixedly connected to the top of the base plate 1. The output end of the electric telescopic rod 21 is fixedly connected to the drive frame 22.

[0019] It should be noted that the hinged connection between the support plate 19 and the support frame 20 provides a stable and adjustable support base for the drying cylinder 2. The combination of the chute, drive frame 22, connecting rod 23, and electric telescopic rod 21 allows the drive frame 22 to slide within the chute via the electric telescopic rod 21, which in turn drives the connecting rod 23 to rotate the drying cylinder 2 around the hinge point between the support plate 19 and the support frame 20. This enables flexible adjustment of the tilt angle of the drying cylinder 2. This design allows the drying cylinder 2 to be at a suitable tilt angle during discharge, allowing the raw materials to be discharged from the drying cylinder 2 more smoothly, reducing the amount of raw materials remaining in the drying cylinder 2, and preventing residual raw materials from affecting the drying quality of subsequent batches of raw materials.

[0020] refer to Figure 2 As shown, a dustproof net 24 is fixedly connected to the air inlet of the air pump 9.

[0021] It should be noted that the dust filter 24 fixed at the air inlet of the air pump 9 can effectively filter dust and impurities in the air when the air pump 9 draws in air from the outside, preventing dust from entering the air pump 9. If dust enters the air pump 9, it may not only affect the normal operating efficiency of the air pump 9, but also cause wear and tear on the internal components of the air pump 9, shortening its service life. At the same time, after the filtered air enters the heating cylinder 12, it can prevent dust from coming into contact with the electric heating wire and causing contamination or damage to the heating wire. It can also prevent dust from entering the drying cylinder 2 with the hot air and contaminating the raw materials, ensuring the purity of the raw materials during the drying process, avoiding the impact of dust on the quality of subsequent injection molded parts, reducing the frequency and cost of equipment maintenance, and ensuring the long-term stable operation of the device.

[0022] refer to Figure 1 As shown, a protective cover 18 is fixedly connected to the left side of the drying cylinder 2, and the motor 8 is located inside the protective cover 18.

[0023] It should be noted that the protective cover 18 fixed on the left side of the drying cylinder 2 encloses the motor 8. The protective cover 18 can isolate the rotating parts of the motor 8 during operation, preventing operators from accidentally touching the rotating parts during equipment operation and causing safety accidents, thus improving the safety of the device. In addition, the protective cover 18 can also block external debris from colliding with or contaminating the motor 8, ensuring that the motor 8 continuously and stably provides power to the mixing rack 6, and ensuring the continuity and effectiveness of raw material mixing during the drying process.

[0024] refer to Figure 5 As shown, a sealing ring 16 is fixedly connected inside the deodorizing box 13. The inner wall of the sealing ring 16 is in contact with the activated carbon adsorption plate 14. A handle is fixedly connected to the front of the activated carbon adsorption plate 14.

[0025] It should be noted that the sealing ring 16 inside the deodorization box 13 fits snugly against the activated carbon adsorption plate 14, effectively sealing the gap between the activated carbon adsorption plate 14 and the inner wall of the deodorization box 13. This prevents odor-carrying exhaust gas from leaking out of the gap, ensuring that the exhaust gas must be adsorbed by the activated carbon adsorption plate 14 before being discharged. This significantly improves the odor removal effect of the deodorization box 13 and prevents odors from spreading to the workshop environment and causing pollution. The handle on the front of the activated carbon adsorption plate 14 provides convenience for operators to replace the adsorption plate. When the activated carbon is saturated, operators can easily pull the adsorption plate out of the deodorization box 13 and replace it with a new one without the need for tools. The operation is simple and efficient, saving replacement time and ensuring that the deodorization box 13 is continuously in a good odor treatment state. This avoids odor treatment failure due to inconvenient adsorption plate replacement, which could affect the production environment and raw material quality. The activated carbon adsorption plate 14 is a common existing technology and will not be described in detail in this application.

[0026] refer to Figure 2 As shown, the top of the drying cylinder 2 is connected to the feed pipe 3, the right side of the drying cylinder 2 is connected to the discharge pipe 4, and the right side of the discharge pipe 4 is connected to the discharge valve 5.

[0027] It should be noted that: the feed pipe 3 and the discharge pipe 4 respectively enable convenient entry and exit of raw materials, and the discharge valve 5 can precisely control the discharge speed.

[0028] refer to Figure 2 As shown, a sealing cap 17 is threadedly connected to the top of the feed pipe 3. The surface of the sealing cap 17 is provided with anti-slip protrusions, and a handle is fixedly connected to the top of the sealing cap 17.

[0029] It should be noted that the sealing cap 17, threaded at the top of the feed pipe 3, seals the feed pipe 3 after the raw material is added to the drying cylinder 2. This prevents hot air from escaping from the feed pipe 3 during the drying process, ensuring a stable temperature inside the cylinder and avoiding heat loss that could affect drying efficiency. It also prevents dust and impurities from the outside air from entering the drying cylinder 2 and contaminating the raw material, maintaining a clean drying environment. The anti-slip protrusions on the surface of the sealing cap 17 increase the friction between the hand and the cap, preventing the operator from slipping when turning it, and facilitating quick and easy tightening or loosening of the cap.

[0030] refer to Figure 2 As shown, stirring rods 7 are fixedly connected to the surface of stirring rack 6, and there are several stirring rods 7.

[0031] It should be noted that when the motor 8 is started, its output end drives the stirring rack 6 to rotate inside the drying cylinder 2. The stirring rod 7 on the surface of the stirring rack 6 rotates together to fully stir the raw materials inside the drying cylinder 2, prevent the raw materials from piling up, and allow the raw materials to come into full contact with the hot air, thereby further improving the uniformity of drying.

[0032] The working principle of the drying device for automotive plastic injection molding raw materials provided by this utility model is as follows: During use, first, a comprehensive inspection of the device is conducted. This includes checking whether the activated carbon adsorption plate 14 inside the deodorizing box 13 is properly installed, whether the sealing ring 16 is tightly fitted with the activated carbon adsorption plate 14, whether there is dust accumulation on the dust filter 24 at the air inlet of the air pump 9, and whether the electrical wiring connections are correct. After confirming that all components are normal, proceed to the next step. Next, open the sealing cover 17 and slowly pour the raw materials for automotive plastic injection molding to be dried into the feed pipe 3. The raw materials enter the drying cylinder 2 through the feed pipe 3. After pouring in sufficient raw materials, rotate the sealing cover 17 again to ensure a tight threaded connection between the sealing cover 17 and the feed pipe 3, preventing hot air leakage during the drying process.

[0033] Then, the air pump 9 is started. Air pump 9 draws in air from the outside. After the air passes through the dust filter 24 to remove dust and impurities, it enters the air pump 9. The air pump 9 delivers the filtered air to the heating cylinder 12. At this time, the electric heating wire inside the heating cylinder 12 is energized, and the electric heating wire heats the air. The heated air is then delivered through a hose to the first air collecting hood 10. The first air collecting hood 10 concentrates the hot air and evenly distributes it into the drying cylinder 2 through the air inlet at the bottom of the drying cylinder 2. Next, the motor 8 is started, and its output end drives the stirring rack 6 to rotate inside the drying cylinder 2. The stirring rod 7 on the surface of the stirring rack 6 rotates along with it, thoroughly stirring the raw materials inside the drying cylinder 2, preventing material accumulation, ensuring full contact between the raw materials and the hot air, and improving drying uniformity. During the drying process, hot air carrying the moisture and odor of the raw materials is discharged from the air outlet at the top of the drying cylinder 2 and enters the second gas collection hood 11. The second gas collection hood 11 concentrates the hot air and sends it into the deodorizing box 13. The hot air passes through the activated carbon adsorption plate 14 in the deodorizing box 13. The activated carbon adsorption plate 14 adsorbs the odor substances in the hot air. The clean gas after treatment is discharged from the exhaust pipe 15 at the top of the deodorizing box 13.

[0034] After the raw materials are dried, first cut off the power to the electric heating wire to stop heating. After the temperature of the heating cylinder 12 drops slightly, turn off the air pump 9 to stop hot air delivery, and finally turn off the motor 8 to stop stirring. Then start the electric telescopic rod 21. The output end of the electric telescopic rod 21 drives the drive frame 22 to slide to the left in the groove of the base plate 1. The drive frame 22 drives the connecting rod 23 to move. The connecting rod 23 drives the bottom right side of the drying cylinder 2, so that the drying cylinder 2 slowly tilts around the hinge point of the support plate 19 and the support frame 20. The drying cylinder 2 rotates clockwise. After adjusting to a suitable discharge angle, open the discharge valve 5 on the right side of the discharge pipe 4. The dried raw materials are discharged from the discharge pipe 4 under the tilting action of the drying cylinder 2. After all the raw materials are discharged, start the electric telescopic rod 21 in the opposite direction to drive the drive frame 22 to slide in the opposite direction. The connecting rod 23 pulls the drying cylinder 2 back to its original position. After resetting, close the discharge valve 5. Finally, open the deodorization box 13, grasp the handle on the front of the activated carbon adsorption plate 14 to pull out the saturated adsorption plate and replace it with a new one, clean the dust on the dustproof net 24, check the operation of the motor 8 inside the protective cover 18, and prepare for the next use.

[0035] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A raw material drying device for injection molding of automotive plastic parts, characterized in that, The device includes a base plate (1), a drying cylinder (2) is arranged above the base plate (1), a stirring rack (6) is rotatably connected inside the drying cylinder (2), a motor (8) is fixedly connected to the left side of the drying cylinder (2) by a bracket, the output end of the motor (8) is fixedly connected to the stirring rack (6), an air inlet is provided at the bottom of the drying cylinder (2), an air outlet is provided at the top of the drying cylinder (2), a first gas collecting hood (10) is fixedly connected to the bottom of the drying cylinder (2), the first gas collecting hood (10) communicates with the air inlet, and a second gas collecting hood is fixedly connected to the top of the drying cylinder (2). The second gas collection hood (11) is connected to the air outlet. The top of the base plate (1) is fixedly connected to the air pump (9). The air outlet of the air pump (9) is connected to the heating cylinder (12). The heating cylinder (12) is fixedly connected to the inside. The air outlet of the heating cylinder (12) is connected to the air inlet of the first gas collection hood (10) through a hose. The top of the second gas collection hood (11) is connected to the deodorizing box (13). The deodorizing box (13) is slidably connected to the inside of the deodorizing box (13). The top of the deodorizing box (13) is connected to the exhaust pipe (15).

2. The raw material drying device for injection molding of automotive plastic parts according to claim 1, characterized in that, A support plate (19) is fixedly connected to the left side of the top of the base plate (1). A support frame (20) is hinged to the top of the support plate (19). The support frame (20) is fixedly connected to the drying cylinder (2). Slide grooves are provided on the front and rear sides of the top of the base plate (1). A drive frame (22) is slidably connected inside the slide groove. A connecting rod (23) is hinged to the top of the drive frame (22). The end of the connecting rod (23) away from the drive frame (22) is hinged to the right side of the bottom of the drying cylinder (2). An electric telescopic rod (21) is fixedly connected to the top of the base plate (1). The output end of the electric telescopic rod (21) is fixedly connected to the drive frame (22).

3. The raw material drying device for injection molding of automotive plastic parts according to claim 2, characterized in that, The air inlet of the air pump (9) is fixedly connected with a dustproof net (24).

4. The raw material drying device for injection molding of automotive plastic parts according to claim 3, characterized in that, A protective cover (18) is fixedly connected to the left side of the drying cylinder (2), and the motor (8) is located inside the protective cover (18).

5. A raw material drying device for injection molding of automotive plastic parts according to claim 4, characterized in that, The deodorizing box (13) is fixedly connected to a sealing ring (16), the inner wall of the sealing ring (16) is in contact with the activated carbon adsorption plate (14), and the front of the activated carbon adsorption plate (14) is fixedly connected to a handle.

6. The raw material drying device for injection molding of automotive plastic parts according to claim 5, characterized in that, The top of the drying cylinder (2) is connected to the feed pipe (3), the right side of the drying cylinder (2) is connected to the discharge pipe (4), and the right side of the discharge pipe (4) is connected to the discharge valve (5).

7. A raw material drying device for injection molding of automotive plastic parts according to claim 6, characterized in that, The top of the feed pipe (3) is threaded with a sealing cap (17), the surface of the sealing cap (17) is provided with anti-slip protrusions, and a handle is fixedly connected to the top of the sealing cap (17).

8. The raw material drying device for injection molding of automotive plastic parts according to claim 7, characterized in that, The surface of the stirring rack (6) is fixedly connected with stirring rods (7), and the number of stirring rods (7) is several.

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