Film material preheating and softening equipment for automobile cover production

Abstract

The utility model relates to the technical field of car cover production, concretely to a pre-drying box, the pre-drying box top surface is equipped with motor, the power output shaft of motor penetrates the end surface of pre-drying box, and extends to the inner chamber of pre-drying box, the power output shaft end of motor is equipped with stirring subassembly, the inner chamber bottom surface of pre-drying box is equipped with the air pump, the bottom surface of air pump is connected with stirring subassembly, the inner chamber below of pre-drying box is equipped with the support frame, the utility model discloses a film material preheating softening equipment for car cover production is provided with air pump, stirring subassembly and motor, in the process of device use, realizes the formation of the upward airflow through the mutual cooperation between above -mentioned structure, the upward airflow is scattered to the plastic particles in the pre-drying box, the airflow drives the particle circulation to turn over, and the cooperation stirs, realizes the inside and outside double motion track of particle, ensures that the heating area maximization and temperature distribution are even.

Description

Technical Field

[0001] This utility model relates to the field of automotive cover production technology, specifically to a preheating and softening device for automotive cover production. Background Technology

[0002] Preheating and softening equipment for automotive film production is a device that pre-dries and softens the raw materials used in automotive film production before production. On one hand, moisture absorbed by hygroscopic resins (such as TPU and PVC) can easily trigger hydrolysis during high-temperature processing, leading to a decrease in molecular weight, reduced mechanical strength, and yellowing. On the other hand, rapid vaporization of moisture in the melt can produce surface defects such as bubbles and silver streaks, and cause incomplete mold filling or internal voids, directly affecting the protective properties and light transmittance of the car cover. Pre-drying controls the moisture content of the raw materials to an extremely low level, ensuring melt uniformity during extrusion / injection molding, avoiding porosity defects, and improving the dimensional stability and weather resistance of the finished product. This meets the core requirements of automotive-grade surface protection materials for high transparency, flawless finish, and long-term aging resistance.

[0003] Existing preheating and softening equipment for automotive cover production typically involves placing plastic granules into a heating device with a stirring function for processing. The existing stirring structure is mostly a simple paddle type, which makes it difficult to achieve sufficient dispersion between granules. The hot and humid air in the central area cannot be discharged in time, resulting in low drying efficiency and poor quality of the subsequent finished product.

[0004] Therefore, there is a need for a preheating and softening equipment for automotive film production to improve the above-mentioned problems. Utility Model Content

[0005] To address the problem that existing mixing structures are mostly simple paddle-type, which make it difficult to achieve sufficient dispersion between particles and prevent the timely discharge of hot and humid air in the central area, resulting in low drying efficiency and poor quality of the final product, this utility model provides a preheating and softening device for automotive film production to solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A preheating and softening device for automotive cover production includes a pre-drying chamber. A motor is installed on the top surface of the pre-drying chamber. The power output shaft of the motor passes through the end face of the pre-drying chamber and extends into the inner cavity of the pre-drying chamber. A stirring assembly is installed at the end of the power output shaft of the motor. An air pump is installed on the bottom surface of the inner cavity of the pre-drying chamber. The bottom surface of the air pump is connected to the stirring assembly. A support frame is installed below the inner cavity of the pre-drying chamber.

[0008] The stirring assembly includes a right-angle tube, one end of which is rotatably connected to a connecting cylinder. Multiple rectangular blades are evenly distributed on the outer wall of the connecting cylinder, and the inner cavities of the rectangular blades are in communication with the inner cavity of the connecting cylinder.

[0009] The top surface of the rectangular blade is evenly provided with multiple air ducts, and the end face of the air duct is fitted with a limit sleeve.

[0010] As a preferred embodiment of this utility model, the limiting sleeve is conical, and the air duct is connected to the inner cavity of the rectangular blade.

[0011] The top surface of the connecting cylinder is connected to the end of the power output shaft of the motor.

[0012] As a preferred embodiment of this utility model, the connecting cylinder is rotatably mounted on the air pump, and sponge filter blocks are respectively fitted and installed on the lower front and rear sides of the pre-drying box.

[0013] As a preferred embodiment of this utility model, activated carbon plates are symmetrically arranged between the air pump and the bottom surface of the pre-drying chamber, with the air pump located between the two activated carbon plates.

[0014] As a preferred embodiment of this utility model, a discharge port is provided on the front side of the pre-drying box, and a sealing door is rotatably provided on the front side of the pre-drying box, near the discharge port, and a sealing component is provided between the sealing door and the pre-drying box.

[0015] As a preferred embodiment of this utility model, the sealing component includes a first mounting frame, a second mounting frame is installed above the outer side wall of the sealing door, and the first mounting frame is installed on the front side of the outer wall of the pre-drying box, close to the second mounting frame. A pin is inserted between the first mounting frame and the second mounting frame.

[0016] As a preferred embodiment of this utility model, the end face of the pre-drying box is provided with a feed inlet, and a sealing plate is rotatably provided on the side of the end face of the pre-drying box near the feed inlet, and a support frame is installed on the inner wall of the feed inlet.

[0017] As a preferred embodiment of this utility model, the end face of the pre-drying box is uniformly provided with multiple ventilation holes.

[0018] Compared with existing technologies, this utility model incorporates an air pump, a stirring assembly, and a motor in the preheating and softening equipment for automotive cover production. During operation, the interaction of these structures creates an upward airflow that disperses the plastic granules in the pre-drying chamber. This airflow causes the granules to circulate and tumble, and combined with the stirring, achieves a dual motion trajectory inside and outside the granules, maximizing the heating area and ensuring uniform temperature distribution. Simultaneously, the air pump injects airflow into the pre-drying chamber, increasing the air pressure. This causes the airflow to carry moisture upwards and exit through the vents, improving the preheating and drying effect and increasing the efficiency of subsequent finished automotive cover production. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the stirring assembly structure in this utility model;

[0022] Figure 4 This is a cross-sectional view of the stirring assembly in this utility model;

[0023] Figure 5 for Figure 4 Enlarged structural diagram at point B.

[0024] In the diagram: 1. Pre-drying oven; 2. Control panel; 3. Enclosed door; 4. Enclosure assembly; 401. Mounting frame one; 402. Mounting frame two; 403. Pin; 5. Vent hole; 6. Motor; 7. Enclosure plate; 8. Sponge filter block; 9. Stirring assembly; 901. Right-angle tube; 902. Connecting cylinder; 903. Rectangular blade; 904. Air duct; 905. Limiting sleeve; 10. Activated carbon plate; 11. Air pump; 12. Support frame. Detailed Implementation

[0025] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Example: Please refer to Figure 1 - Figure 5The device shown is a preheating and softening equipment for automotive cover production, including a pre-drying chamber 1. A motor 6 is installed on the top surface of the pre-drying chamber 1. The power output shaft of the motor 6 passes through the end face of the pre-drying chamber 1 and extends into the inner cavity of the pre-drying chamber 1. A stirring assembly 9 is installed at the end of the power output shaft of the motor 6. An air pump 11 is installed on the bottom surface of the inner cavity of the pre-drying chamber 1. The bottom surface of the air pump 11 is connected to the stirring assembly 9. A support frame 12 is installed below the inner cavity of the pre-drying chamber 1.

[0027] The stirring assembly 9 includes a right-angle tube 901, with a connecting cylinder 902 rotatably mounted at one end of the right-angle tube 901. Multiple rectangular blades 903 are evenly distributed on the outer wall of the connecting cylinder 902, and the inner cavities of the rectangular blades 903 are in communication with the inner cavities of the connecting cylinder 902.

[0028] Multiple air ducts 904 are evenly arranged on the top surface of the rectangular blade 903. A limiting sleeve 905 is installed on the end face of the air duct 904. The limiting sleeve 905 is conical. The air duct 904 is connected to the inner cavity of the rectangular blade 903.

[0029] The top surface of the connecting cylinder 902 is connected to the end of the power output shaft of the motor 6;

[0030] Multiple ventilation holes 5 are evenly provided on the end face of the pre-drying box 1;

[0031] Among them, the outer wall of the pre-drying box 1 is equipped with a control panel 2, which is electrically connected to the air pump 11 and the motor 6, and controls the operation of the air pump 11 and the motor 6.

[0032] Furthermore, the starting motor 6 drives the connecting cylinder 902 to rotate and stir the plastic granules in the pre-drying box 1, which facilitates heating.

[0033] Furthermore, the air pump 11 is started, and the air pump 11 inputs the airflow into the pre-drying chamber 1 through the right-angle tube 901, connecting cylinder 902, rectangular blade 903, air duct 904 and limiting sleeve 905. Since the air duct 904 and limiting sleeve 905 are vertically upward, the airflow is pushed upward. The upward airflow disperses the plastic particles in the pre-drying chamber 1. The airflow drives the particles to circulate and turn, and with the stirring, the particles achieve a dual motion trajectory inside and outside, ensuring that the heating area is maximized and the temperature distribution is uniform.

[0034] In this embodiment, specific references Figure 1 - Figure 5 The connecting cylinder 902 is rotatably mounted on the air pump 11. Sponge filter blocks 8 are respectively embedded and installed on the lower front and rear sides of the pre-drying box 1. Activated carbon plates 10 are symmetrically arranged between the air pump 11 and the bottom surface of the inner cavity of the pre-drying box 1. The air pump 11 is located between the two activated carbon plates 10.

[0035] Among them, the sponge filter block 8 and the activated carbon plate 10 filter the air entering the pre-drying box 1 to avoid contaminating the plastic particles in the pre-drying box 1.

[0036] In this embodiment, specific references Figure 1 - Figure 2 A discharge port is provided on the front side of the pre-drying box 1. A sealing door 3 is rotatably provided on the front side of the pre-drying box 1, near the discharge port. A sealing component 4 is provided between the sealing door 3 and the pre-drying box 1. The sealing component 4 includes a first mounting frame 401. A second mounting frame 402 is installed on the upper side of the outer wall of the sealing door 3. The first mounting frame 401 is installed on the front side of the outer wall of the pre-drying box 1, near the second mounting frame 402. A pin 403 is inserted between the first mounting frame 401 and the second mounting frame 402.

[0037] When the plastic granules in the pre-drying box 1 are preheated and dried, the pin 403 is removed from between the mounting frame 1 401 and the mounting frame 2 402 to release the restriction on the closed door 3, thereby flipping and opening the closed door 3 to discharge the plastic granules in the pre-drying box 1.

[0038] In this embodiment, specific references Figures 1-2 The pre-drying box 1 has a feed inlet on its end face, and a sealing plate 7 is rotatably installed on the side of the end face of the pre-drying box 1 near the feed inlet. A support frame 12 is installed on the inner wall of the feed inlet.

[0039] When the device is in use, the closing plate 7 is flipped open, and plastic granules, which are used as raw materials for car covers, are fed into the pre-drying box 1 from the feed port. Then the closing plate 7 is closed, and the support frame 12 is used to limit the position of the closing plate 7.

[0040] In this solution, the preheating and softening equipment for automotive cover production flips open the sealing plate 7, allowing the plastic granules used as raw materials for the cover to be fed into the pre-drying chamber 1 from the inlet. Then, the sealing plate 7 is closed, and the pre-drying chamber 1 is started to heat the plastic granules inside.

[0041] At the same time, the motor 6 is started to drive the connecting cylinder 902 to rotate and stir the plastic granules in the pre-drying box 1, so as to facilitate heating;

[0042] Furthermore, the air pump 11 is started, and the air pump 11 inputs airflow into the pre-drying chamber 1 through the right-angle tube 901, connecting cylinder 902, rectangular blade 903, air duct 904 and limiting sleeve 905. Since the air duct 904 and limiting sleeve 905 are vertically upward, the airflow is pushed upward. The upward airflow disperses the plastic particles in the pre-drying chamber 1, and the airflow drives the particles to circulate and turn. With the help of stirring, the particles achieve a dual motion trajectory inside and outside, ensuring that the heating area is maximized and the temperature distribution is uniform. At the same time, the air pump 11 injects airflow into the pre-drying chamber 1, which increases the air pressure in the pre-drying chamber 1. As a result, the airflow in the pre-drying chamber 1 carries moisture upward and is discharged from the vent 5, thereby improving the preheating and drying effect and improving the efficiency of subsequent car cover finished products.

[0043] The motor 6, air pump 11, and control panel 2 used in this utility model are all existing known electrical devices, and all can be purchased and used directly on the market. Their structure, circuit, and control principle are all existing known technologies. Therefore, the structure, circuit, and control principle of the motor 6, air pump 11, and control panel 2 will not be described in detail here.

[0044] All standard parts used in this application can be purchased from the market. 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 and are also general components, which are common knowledge in this field.

[0045] 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 preheating and softening device for automotive cover production, comprising a pre-drying chamber (1), characterized in that: A motor (6) is installed on the top surface of the pre-drying box (1). The power output shaft of the motor (6) passes through the end face of the pre-drying box (1) and extends to the inner cavity of the pre-drying box (1). A stirring assembly (9) is installed at the end of the power output shaft of the motor (6). An air pump (11) is installed on the bottom surface of the inner cavity of the pre-drying box (1). The bottom surface of the air pump (11) is connected to the stirring assembly (9). A support frame (12) is installed below the inner cavity of the pre-drying box (1). The stirring assembly (9) includes a right-angle tube (901), one end of which is rotatably provided with a connecting cylinder (902). Multiple rectangular blades (903) are evenly distributed on the outer wall of the connecting cylinder (902), and the inner cavity of the rectangular blades (903) is connected to the inner cavity of the connecting cylinder (902). The top surface of the rectangular blade (903) is uniformly provided with a plurality of air ducts (904), and the end face of the air duct (904) is fitted with a limit sleeve (905).

2. The preheating and softening equipment for automotive cover production according to claim 1, characterized in that: The limiting sleeve (905) is conical, and the air duct (904) is connected to the inner cavity of the rectangular blade (903); The top surface of the connecting cylinder (902) is connected to the end of the power output shaft of the motor (6).

3. The preheating and softening equipment for automotive cover production according to claim 1, characterized in that: The connecting cylinder (902) is rotatably mounted on the air pump (11), and sponge filter blocks (8) are respectively fitted and installed on the lower front and rear sides of the pre-drying box (1).

4. The preheating and softening equipment for automotive cover production according to claim 3, characterized in that: Activated carbon plates (10) are symmetrically arranged between the bottom surface of the inner cavity of the air pump (11) and the pre-drying box (1), with the air pump (11) located between the two activated carbon plates (10).

5. The preheating and softening equipment for automotive cover production according to claim 1, characterized in that: The pre-drying box (1) is provided with a discharge port on the front side. A sealing door (3) is rotatably provided on the front side of the pre-drying box (1) and the side close to the discharge port. A sealing component (4) is provided between the sealing door (3) and the pre-drying box (1).

6. The preheating and softening equipment for automotive cover production according to claim 5, characterized in that: The enclosure component (4) includes a first mounting frame (401), a second mounting frame (402) is installed above the outer side wall of the enclosure door (3), and a first mounting frame (401) is installed on the front side of the outer wall of the pre-drying box (1) and on the side close to the second mounting frame (402). A pin (403) is inserted between the first mounting frame (401) and the second mounting frame (402).

7. The preheating and softening equipment for automotive cover production according to claim 1, characterized in that: The pre-drying box (1) has a feed inlet on its end face. A sealing plate (7) is rotatably installed on the side of the end face of the pre-drying box (1) near the feed inlet. A support frame (12) is installed on the inner wall of the feed inlet.

8. The preheating and softening equipment for automotive cover production according to claim 1, characterized in that: The pre-drying box (1) has multiple ventilation holes (5) evenly arranged on its end face.

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