Efficient preheating device for plastic part spraying
By combining composite heating components and hot air circulation components, the problems of uneven preheating and high energy consumption of plastic parts are solved, achieving uniform heating and efficient preheating of plastic parts, thus meeting the spraying needs of modern industrial production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-09
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional plastic part preheating devices suffer from problems such as uneven preheating, low efficiency, and high energy consumption, making it difficult to meet the high-efficiency and high-quality requirements of modern industrial production for plastic part spraying.
It adopts a composite heating component and a hot air circulation component. The heating is achieved by combining infrared radiation heating tubes and electric heating tube frames, and the hot air circulation component achieves uniform distribution of hot air. Temperature monitoring sensors and central controllers regulate the operation of the air pump to break the dead zone of hot air flow and ensure that the plastic parts are heated evenly.
It achieves uniform heating of plastic parts, improves preheating efficiency, reduces energy consumption, and meets the high-efficiency, high-quality spraying requirements of modern industrial production.
Smart Images
Figure CN224057925U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic part preheating technology, specifically a high-efficiency preheating device for plastic part spraying. Background Technology
[0002] In the plastic parts spraying process, preheating is a crucial step. Proper preheating can effectively improve the activity of the plastic parts surface, enhance the adhesion of the coating, and avoid quality problems such as sagging and peeling. However, traditional preheating devices suffer from problems such as uneven preheating, low efficiency, and high energy consumption, making it difficult to meet the requirements of modern industrial production for efficient and high-quality plastic parts spraying. Therefore, designing an efficient preheating device for plastic parts spraying is of great practical significance.
[0003] Existing plastic part preheating devices suffer from problems such as uneven preheating, low efficiency, and high energy consumption. In use, they mostly heat the same spot continuously, which causes a large amount of heat to accumulate in one place over time, resulting in uneven heat distribution inside the entire box and affecting the preheating effect of the plastic parts. Utility Model Content
[0004] The purpose of this invention is to provide a high-efficiency preheating device for spraying plastic parts, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency preheating device for plastic parts spraying, comprising a preheating box, a plastic parts rotating and placing mechanism provided on the surface of the preheating box, and a plastic parts preheating mechanism provided on the surface of the preheating box, the plastic parts preheating mechanism comprising a composite heating component and a hot air circulation component;
[0006] The hot air circulation assembly includes a first air inlet located at the center of both ends of the preheating box. Second air inlets are located at both ends of the top middle section of the preheating box. Dust filter plates are installed inside the first and second air inlets. A first control air pump is installed on the top of the second air inlet, and a second control air pump is installed outside the first air inlet. A connecting housing is fixedly connected to the bottom of the back of the preheating box. A first connecting air pipe is installed between the first control air pump and the connecting housing, and a second connecting air pipe is installed between the second control air pump and the connecting housing. The preheating box is also equipped with... Equipped with temperature monitoring sensors, when hot air accumulates locally or flows poorly during circulation inside the preheating chamber, the temperature monitoring sensors in each area send signals back to the central controller. The central controller then activates the second and first control air pumps in the corresponding locations according to a preset program. This draws hot air from areas with higher temperatures or accumulation into the channel and discharges it back into the device through another outlet, achieving mutual circulation and mixing of hot air from different levels and areas. This effectively breaks up dead zones in the flow of hot air, reduces the temperature gradient inside the chamber, and allows the plastic parts to be heated more evenly during the preheating process.
[0007] Preferably, there are two sets of the first control air pump and the first connecting air pipe, two sets of the second control air pump and the second connecting air pipe, and four sets of the temperature monitoring sensor.
[0008] Preferably, the composite heating assembly includes infrared radiation heating tubes installed at the left and right ends and top of the preheating chamber. Bottom air vents are located at the left and right ends of the bottom of the preheating chamber, and a fixed housing is fixedly connected to the bottom of each bottom air vent. An installation plate is fixedly connected inside the fixed housing, and a fan is installed on the top of the installation plate. A heating chamber is located at the bottom of the fixed housing, and a connecting pipe is installed between the heating chamber and the fixed housing. An air pump is installed on the top of the connecting pipe. An intake fan and a filter plate are installed on the front of the heating chamber, and a perforated partition is installed inside the bottom air vents. The infrared radiation heating tubes preheat the plastic parts, providing rapid heating and high thermal efficiency, allowing for direct and rapid heating of the plastic parts' surface. Simultaneously, the bottom intake fan draws air, the heating tubes provide heating, and the fan and air pump deliver hot air into the chamber, achieving uniform heating of the plastic parts. These two heating methods work together, allowing for flexible adjustment of heating parameters based on the material and size of different plastic parts to ensure effective preheating.
[0009] Preferably, the air pump is installed between the connecting pipe and the fixed housing, and the filter plate is installed at the outer end of the air intake fan.
[0010] Preferably, the plastic part rotating placement mechanism includes a rotating shaft, which is rotatably connected to the center inside the preheating box. A servo motor is installed on the top of the preheating box, and the rotating shaft is fixedly connected to the bottom output end of the servo motor. A placement frame is fixedly connected to the surface of the rotating shaft, and an air vent is opened on the surface of the placement frame.
[0011] Preferably, the preheating box has side seats fixedly connected to the bottom of both ends, and the bottom of the side seats is fixedly connected to feet. The preheating box has a sealed door installed on the front, and an observation window is fixedly connected to the front of the sealed door.
[0012] Compared with the prior art, this utility model provides a high-efficiency preheating device for plastic parts spraying, which has the following beneficial effects:
[0013] This high-efficiency preheating device for plastic parts spraying is equipped with a hot air circulation component. When hot air accumulates locally or flows poorly during the circulation process inside the preheating chamber, temperature monitoring sensors in each area send signals back to the central controller. The central controller then activates the second and first control air pumps in the corresponding positions according to a preset program. This draws hot air from the areas with higher temperatures or accumulation into the channel and discharges it back into the device through another outlet. This achieves mutual circulation and mixing of hot air from different levels and areas, effectively breaking up dead zones in the hot air flow, reducing the temperature gradient inside the chamber, and allowing the plastic parts to be heated more evenly during the preheating process.
[0014] This high-efficiency preheating device for plastic parts spraying is equipped with a composite heating component. It preheats the plastic parts through infrared radiation heating tubes. Infrared radiation heating is characterized by fast heating speed and high thermal efficiency, and can directly heat the surface of the plastic parts quickly. At the same time, the bottom uses an air intake fan to draw air, an electric heating tube frame to heat the parts, and an air fan and air pump to blow hot air into the chamber, achieving uniform heating of the plastic parts. The two heating methods work together, and the heating parameters can be flexibly adjusted according to the material and size of different plastic parts to ensure the preheating effect. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the composite heating component of this utility model;
[0019] Figure 4 This is a schematic diagram of the hot air circulation component of this utility model.
[0020] Figure 5 This is a schematic diagram of the rotating placement mechanism for plastic parts according to the present invention.
[0021] In the diagram: 1. Preheating chamber; 2. Side seat; 3. Base; 4. Sealed door; 5. Observation window; 6. Plastic part rotation and placement mechanism; 61. Rotating shaft; 62. Servo motor; 63. Placement frame; 64. Air vent; 7. Plastic part preheating mechanism; 71. Composite heating assembly; 711. Infrared radiation heating tube; 712. Bottom air vent; 713. Fixed chamber; 714. Mounting plate; 715. Fan; 716. Heating chamber; 717. 718 Connecting pipe; 719 Air pump; 7101 Air intake fan; 7102 Filter plate; 7103 Electric heating tube frame; 7104 Perforated partition; 72 Hot air circulation assembly; 721 First air inlet; 722 Second air inlet; 723 Dustproof filter plate; 724 First control air pump; 725 First connecting air pipe; 726 Second control air pump; 727 Second connecting air pipe; 728 Connecting housing; 729 Temperature monitoring sensor. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0024] This utility model provides the following technical solution: Example 1
[0025] Please see Figure 1-5A high-efficiency preheating device for plastic parts spraying includes a preheating box 1, a plastic parts rotating and placing mechanism 6 is provided on the surface of the preheating box 1, and a plastic parts preheating mechanism 7 is provided on the surface of the preheating box 1. The plastic parts preheating mechanism 7 includes a composite heating component 71 and a hot air circulation component 72.
[0026] The hot air circulation assembly 72 includes a first air inlet 721, which is located at the center of both ends of the preheating box 1. Second air inlets 722 are located at both ends of the top middle section of the preheating box 1. Dust filter plates 723 are installed inside the first and second air inlets 721 and 722. A first control air pump 724 is installed on the top of the second air inlet 722, and a second control air pump 726 is installed on the outer end of the first air inlet 721. A connecting housing 728 is fixedly connected to the bottom of the back of the preheating box 1. A first connecting air pipe 725 is installed between the first control air pump 724 and the connecting housing 728, and a second connecting air pipe 727 is installed between the second control air pump 726 and the connecting housing 728. The preheating box 1 is located at both ends and the top. All are equipped with temperature monitoring sensors 729. When hot air accumulates locally or flows poorly during the circulation process inside the preheating chamber 1, the temperature monitoring sensors 729 in each area will send signals to the central controller. The central controller will start the second control air pump 726 and the first control air pump 724 in the corresponding positions according to the preset program. The hot air will be drawn into the channel from the area with higher temperature or accumulation, and discharged back into the device from another outlet. This will realize the mutual circulation and mixing of hot air in different levels and areas, effectively break the dead zone of hot air flow, reduce the temperature gradient in the chamber, and enable the plastic parts to be heated more evenly during the preheating process. The temperature monitoring sensor 729 used is WRN-130.
[0027] Two sets of the first control air pump 724 and the first connecting air pipe 725 are provided; two sets of the second control air pump 726 and the second connecting air pipe 727 are provided; and four sets of temperature monitoring sensors 729 are provided.
[0028] The composite heating assembly 71 includes an infrared radiation heating tube 711, which is installed inside the preheating box 1 at both ends and the top. Bottom air vents 712 are provided at both ends of the bottom of the preheating box 1. A fixed housing 713 is fixedly connected to the bottom of the bottom air vents 712. A mounting plate 714 is fixedly connected inside the fixed housing 713. A fan 715 is installed on the top of the mounting plate 714. A heating box 716 is located at the bottom of the fixed housing 713. A connecting pipe 717 is installed between the heating box 716 and the fixed housing 713. An air pump 718 is installed on the top of the connecting pipe 717. An air intake fan 719 is installed on the front of the heating box 716. A filter plate 7101 is installed on the surface, and a perforated baffle 7103 is installed inside the bottom air vent 712. The plastic parts are preheated by infrared radiation heating tube 711. Infrared radiation heating has the characteristics of fast heating speed and high thermal efficiency, and can directly heat the surface of the plastic parts quickly. At the same time, the bottom is vented by an air intake fan 719, heated by an electric heating tube frame 7102, and blown by an air fan 715 and an air pump 718 to blow hot air into the chamber, so as to achieve uniform heating of the plastic parts. The two heating methods work together, and the heating parameters can be flexibly adjusted according to the material and size of different plastic parts to ensure the preheating effect. The infrared radiation heating tube 711 used is KS-800.
[0029] The air pump 718 is installed between the connecting pipe 717 and the fixed housing 713, and the filter plate 7101 is installed at the outer end of the intake fan 719. Example 2
[0030] Please see Figure 1-5 Furthermore, based on Embodiment 1, the plastic part rotating placement mechanism 6 is further provided, including a rotating shaft 61, the rotating shaft 61 being rotatably connected to the center inside the preheating box 1, a servo motor 62 being installed on the top of the preheating box 1, the rotating shaft 61 being fixedly connected to the bottom output end of the servo motor 62, a placement frame 63 being fixedly connected to the surface of the rotating shaft 61, and an air vent 64 being opened on the surface of the placement frame 63.
[0031] The preheating chamber 1 has side seats 2 fixedly connected to the bottom of both ends, and the bottom of the side seats 2 is fixedly connected to the feet 3. The preheating chamber 1 has a sealed door 4 installed on the front, and the sealed door 4 has an observation window 5 fixedly connected to the front.
[0032] In actual operation, when this device is used, open the sealed door 4 and place the plastic part inside the placement frame 63. Start the servo motor 62 to drive the rotating shaft 61 to rotate. Keep rotating during the heating process. This mechanism can make the plastic part heat up more comprehensively and evenly.
[0033] The plastic parts are preheated by infrared radiation heating tube 711. Infrared radiation heating has the characteristics of fast heating speed and high thermal efficiency, and can directly heat the surface of the plastic parts quickly. At the same time, the bottom is vented by air intake fan 719, heated by electric heating tube frame 7102, and blown by air fan 715 and air pump 718 to blow hot air into the chamber, so as to achieve uniform heating of the plastic parts. The two heating methods work together, and the heating parameters can be flexibly adjusted according to the material and size of different plastic parts to ensure the preheating effect.
[0034] When hot air accumulates locally or becomes stagnant during circulation inside the preheating chamber 1, the temperature monitoring sensors 729 located in each area send signals back to the central controller. The central controller then activates the second control air pump 726 and the first control air pump 724 in the corresponding positions according to a preset program. This draws hot air from areas with higher temperatures or accumulation into the channel and discharges it back into the device through another outlet, achieving mutual circulation and mixing of hot air from different levels and areas. This effectively breaks up dead zones in the flow of hot air, reduces the temperature gradient inside the chamber, and allows the plastic parts to be heated more evenly during the preheating process. The entire preheating process is monitored by the temperature monitoring sensors 729 to prevent excessively high or low temperatures from affecting the preheating effect of the plastic parts.
[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A high-efficiency preheating device for plastic part spraying, comprising a preheating box (1), characterized in that: The preheating box (1) is provided with a plastic part rotating placing mechanism (6) on the surface, and is provided with a plastic part preheating mechanism (7) on the surface, the plastic part preheating mechanism (7) comprises a composite heating assembly (71) and a hot air circulating assembly (72); The hot air circulating assembly (72) comprises a first air port (721), the first air port (721) is arranged at the center of the left and right ends of the preheating box (1), second air ports (722) are arranged at the left and right ends of the middle section of the top of the preheating box (1), dustproof filter plates (723) are arranged in the first air port (721) and the second air port (722), a first control air pump (724) is arranged on the top of the second air port (722), a second control air pump (726) is arranged on the outer end of the first air port (721), a connecting box (728) is fixedly connected to the bottom end of the back of the preheating box (1), a first connecting air pipe (725) is arranged between the first control air pump (724) and the connecting box (728), a second connecting air pipe (727) is arranged between the second control air pump (726) and the connecting box (728), and temperature monitoring sensors (729) are arranged at the left and right ends and the top of the preheating box (1).
2. The high-efficiency preheating device for spraying plastic parts according to claim 1, characterized in that: The first control air pump (724) and the first connecting air pipe (725) are provided with two groups, the second control air pump (726) and the second connecting air pipe (727) are provided with two groups, and the temperature monitoring sensor (729) is provided with four groups.
3. The high-efficiency preheating device for spraying plastic parts according to claim 1, characterized in that: The composite heating assembly (71) comprises infrared radiation heating pipes (711), the infrared radiation heating pipes (711) are arranged at the left and right ends and the top of the preheating box (1), bottom air ports (712) are arranged at the left and right ends of the bottom end of the preheating box (1), a fixed box (713) is fixedly connected to the bottom end of the bottom air port (712), an installation plate (714) is fixedly connected to the inside of the fixed box (713), an air fan (715) is arranged on the top of the installation plate (714), a heating box (716) is arranged at the bottom end of the fixed box (713), a connecting pipe (717) is arranged between the heating box (716) and the fixed box (713), an air pump (718) is arranged on the top of the connecting pipe (717), an air inlet fan (719) is arranged on the front of the heating box (716), a filter plate (7101) is arranged on the front of the heating box (716), and a porous partition plate (7103) is arranged in the bottom air port (712).
4. The high-efficiency preheating device for spraying plastic parts according to claim 3, characterized in that: The air pump (718) is arranged between the connecting pipe (717) and the fixed box (713), and the filter plate (7101) is arranged at the outer end of the air inlet fan (719).
5. The high-efficiency preheating device for spraying plastic parts according to claim 1, characterized in that: The plastic part rotating placement mechanism (6) comprises a rotating shaft (61), the rotating shaft (61) is rotatably connected to the inside center of the preheating box (1), a servo motor (62) is installed on the top of the preheating box (1), the rotating shaft (61) is fixedly connected to the bottom end output end of the servo motor (62), and a placement frame (63) is fixedly connected to the surface of the rotating shaft (61); the surface of the placement frame (63) is provided with a wind passing opening (64).
6. The high-efficiency preheating device for spraying plastic parts according to claim 1, characterized in that: The preheating box (1) is fixedly connected with side seats (2) at the bottoms of the left and right ends, the bottom of each side seat (2) is fixedly connected with a bottom foot (3), a sealed door (4) is installed on the front of the preheating box (1), and the front of the sealed door (4) is fixedly connected with an observation window (5).