Preheating device and pvd coating processing equipment

Abstract

The utility model discloses a preheating device and PVD coating processing equipment, including preheating box, the box cover is fixedly installed at the top of preheating box, and is equipped with feed inlet on the box cover, and the top of feed inlet is hinged with sealing cover, agitating mechanism, install on the box cover, be used for agitating in preheating box PVD coating, can accurate extraction preheated PVD coating according to the parameter of setting through the quantitative pump in quantitative conveying mechanism, ensure that the coating amount of conveying every time is accurate, this high-precision quantitative conveying mode avoids the waste of coating and the instability factor in production process, guarantees the uniformity of coating thickness and the consistency of quality, simultaneously, mass flowmeter is installed on the discharge pipe, can real -time monitoring coating flow information, and will data feedback to control system, and operating personnel can adjust conveying parameter in time according to real -time flow data, realizes closed -loop control, ensures the stability and accuracy of conveying process.

Description

Technical Field

[0001] This utility model relates to the field of PVD coating processing technology, specifically a preheating device and PVD coating processing equipment. Background Technology

[0002] In modern industry, PVD (physical vapor deposition) coating technology is widely used in many fields such as cutting tools, molds, automotive parts, and aerospace components because it can significantly improve the wear resistance, corrosion resistance, oxidation resistance, and decorative properties of workpieces. PVD coatings also have better fluidity within a certain temperature range.

[0003] In PVD coating processing, the amount of coating delivered after preheating needs to be precisely controlled to ensure the uniformity of coating thickness and the stability of quality. However, traditional delivery methods often fail to achieve high-precision quantitative delivery. Some equipment uses simple valve control or manual adjustment, and the delivery amount is greatly affected by the operator's experience and skill level, which can easily lead to excessive or insufficient delivery. Excessive delivery will result in coating waste, increased production costs, and may also affect the drying and curing process of the coating, causing defects such as blistering and cracking. Insufficient delivery will fail to meet the needs of coating processing and affect production efficiency. Therefore, we need to propose a preheating device and PVD coating processing equipment. Utility Model Content

[0004] The purpose of this invention is to provide a preheating device and a PVD coating processing equipment, which, through the setting of a quantitative mechanism, ensures that the amount of coating delivered each time is accurate, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A preheating device, comprising a preheating chamber; The box cover is fixedly installed on the top of the preheating box, and the box cover is provided with a feed port, the top of which is hinged with a sealing cover; The stirring mechanism, installed on the box cover, is used to stir the PVD coating inside the preheating box; A quantitative conveying mechanism, installed at the bottom of the preheating box, is used to quantitatively convey the preheated PVD coating. The quantitative conveying mechanism includes a discharge pipe, which is fixedly installed at the bottom discharge port of the preheating box, and a solenoid valve is installed on the outer wall of the discharge pipe. A quantitative pump is fixedly connected to the bottom of the discharge pipe.

[0006] Preferably, the preheating box includes an outer box, the inner wall of which is fixedly installed with a heat insulation layer, the inner wall of which is provided with an electric heating layer, and the inner wall of which is fixedly installed with a metal inner liner.

[0007] Preferably, the agitation mechanism includes a rotating rod, which is rotatably mounted on the bottom of the box cover via a bearing. The top of the rotating rod passes through the box cover and is connected to a drive motor. Several sets of agitating rods are fixedly installed on the outer wall of the rotating rod, and a scraping assembly for scraping material from the inner wall of the preheating box is installed on the outer wall of the rotating rod.

[0008] Preferably, the scraping assembly includes a top connecting frame, which is fixedly sleeved on the outer wall of the rotating rod. Vertical scrapers are fixedly connected to both ends of the top connecting frame, and inclined scrapers are fixedly connected to the bottom of the two sets of vertical scrapers. One end of each set of inclined scrapers is fixedly connected to the bottom outer wall of the rotating rod.

[0009] Preferably, one side of the vertical scraper is adapted to the inner wall of the preheating box, and the bottom of the inclined scraper is adapted to the conical inner wall of the bottom of the preheating box.

[0010] Preferably, a mounting base is fixedly installed at the center of the top of the box cover, the drive motor is fixedly installed on the top of the mounting base, and the bottom of the drive motor output shaft is fixedly installed with the top of the rotating rod.

[0011] Preferably, a mass flow meter is installed on the outer wall of the discharge pipe, and the mass flow meter is located below the solenoid valve.

[0012] Preferably, a sealing ring is installed at the connection between the preheating box and the box cover, and a support frame is fixedly installed on the bottom outer wall of the preheating box.

[0013] A PVD coating processing equipment includes a preheating device and a coating processing equipment body. A fixing frame is fixedly installed on one side of the coating processing equipment body, and the preheating box is fixedly installed on the top of the fixing frame by a support frame.

[0014] Preferably, the metering pump is fixedly installed on the top surface of the mounting frame, and the discharge end of the metering pump is connected to the inlet end of the coating processing equipment body through a pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a quantitative pump in its quantitative conveying mechanism to precisely extract preheated PVD coating according to set parameters, ensuring accurate coating quantity for each delivery. This high-precision quantitative conveying method avoids coating waste and instability during production, guaranteeing uniform coating thickness and consistent quality. Simultaneously, a mass flow meter installed on the discharge pipe monitors the coating flow rate in real time and feeds the data back to the control system. Operators can adjust the conveying parameters promptly based on the real-time flow data, achieving closed-loop control and ensuring the stability and accuracy of the conveying process. Attached Figure Description

[0016] Figure 1This is a cross-sectional structural schematic diagram of the preheating box of this utility model; Figure 2 This is a schematic diagram of the structure of the box cover and stirring mechanism of this utility model; Figure 3 This is a schematic diagram of the quantitative conveying mechanism of this utility model; Figure 4 This is a schematic diagram of the structure of this utility model; Figure 5 This is a cross-sectional structural diagram of the inner wall of the preheating box of this utility model.

[0017] In the diagram: 1. Preheating box; 101. Outer box; 102. Insulation layer; 103. Electric heating layer; 104. Metal inner liner; 2. Box cover; 3. Stirring mechanism; 31. Rotating rod; 32. Drive motor; 33. Stirring rod; 34. Scraping assembly; 341. Top connecting frame; 342. Vertical scraper; 343. Inclined scraper; 35. Mounting base; 4. Feed inlet; 5. Quantitative conveying mechanism; 51. Discharge pipe; 52. Solenoid valve; 53. Quantitative pump; 54. Mass flow meter; 6. Support frame; 7. Coating processing equipment body; 8. Fixing frame. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-5 This utility model provides a technical solution: A preheating device includes a preheating box 1; Box cover 2 is fixedly installed on the top of preheating box 1, and box cover 2 is provided with inlet 4, and the top of inlet 4 is hinged with a sealing cover; The stirring mechanism 3 is installed on the box cover 2 and is used to stir the PVD coating in the preheating box 1; The quantitative conveying mechanism 5 is installed at the bottom of the preheating box 1 and is used to quantitatively convey the preheated PVD coating. In an optional embodiment: the quantitative conveying mechanism 5 includes a discharge pipe 51, which is fixedly installed on the bottom discharge port of the preheating box 1, and a solenoid valve 52 is installed on the outer wall of the discharge pipe 51. The bottom of the discharge pipe 51 is fixedly connected to a quantitative pump 53.

[0020] It should be noted that the sealing cap of the feed inlet 4 adopts a hinged design, which can be opened and closed flexibly to facilitate the addition of PVD coating. When closed, it can form an effective seal, reducing heat loss and impurity entry during the preheating process. The solenoid valve 52 can quickly cut off or open the discharge channel, and together with the metering pump 53, it can realize the precise start and stop of the coating and control the delivery volume. The metering conveying mechanism 5 realizes the controllable output of the coating, which improves the ease of operation and stability of the device.

[0021] In an optional embodiment: the preheating box 1 includes an outer box 101, an insulation layer 102 is fixedly installed on the inner wall of the outer box 101, an electric heating layer 103 is provided on the inner wall of the insulation layer 102, and a metal inner liner 104 is fixedly installed on the inner wall of the electric heating layer 103.

[0022] It should be noted that a PID temperature controller is installed on one side of the preheating chamber 1 to stabilize the coating temperature within the process requirements range (e.g., 50-80℃), avoiding viscosity changes caused by temperature fluctuations that could affect flow accuracy. The outer casing 101 is made of high-strength metal material, serving to support and protect the internal structure. The insulation layer 102 is typically made of high-temperature resistant insulation material (e.g., aluminum silicate cotton), which can significantly reduce heat transfer to the outside. The electric heating layer 103 can adjust the heating power through the temperature control system to achieve uniform heating of the metal inner liner 104. The metal inner liner 104 is made of corrosion-resistant and thermally conductive alloy material (e.g., stainless steel), which is in direct contact with the PVD coating to ensure uniform heating of the coating. The electric heating method facilitates precise temperature control, and the metal inner liner 104 ensures the cleanliness and heating efficiency of the coating, making it suitable for the preheating requirements of temperature-sensitive PVD coatings.

[0023] In an optional embodiment: the stirring mechanism 3 includes a rotating rod 31, which is rotatably mounted on the bottom of the box cover 2 via a bearing. The top of the rotating rod 31 passes through the box cover 2 and is connected to a drive motor 32. Several sets of stirring rods 33 are fixedly installed on the outer wall of the rotating rod 31, and a scraping assembly 34 for scraping material from the inner wall of the preheating box 1 is installed on the outer wall of the rotating rod 31.

[0024] It should be noted that the bearing connection between the rotating rod 31 and the box cover 2 ensures smooth rotation and sealing; the drive motor 32 can be controlled by a speed regulating device to adapt to the stirring requirements of PVD coatings of different viscosities; multiple sets of stirring rods 33 are arranged in a spiral or symmetrical manner, which can form a three-dimensional stirring of the coating; the scraper assembly 34 operates synchronously with the rotating rod 31, which can clean the coating adhering to the inner wall in real time; the stirring mechanism 3 makes the coating flow continuously during the preheating process, avoiding local overheating or uneven temperature; the scraper assembly 34 reduces the residue of coating on the box wall, which not only improves the utilization rate of raw materials, but also ensures the uniformity of preheating.

[0025] In an optional embodiment: the scraping assembly 34 includes a top connecting frame 341, which is fixedly sleeved on the outer wall of the rotating rod 31. Vertical scrapers 342 are fixedly connected to both ends of the top connecting frame 341. Inclined scrapers 343 are fixedly connected to the bottom of the two sets of vertical scrapers 342 respectively. One end of the two sets of inclined scrapers 343 is fixedly connected to the bottom outer wall of the rotating rod 31.

[0026] It should be noted that the top connecting frame 341 adopts a rigid structure to ensure that the vertical scraper 342 and the inclined scraper 343 operate synchronously with the rotating rod 31; the height of the vertical scraper 342 is adapted to the height of the side wall of the preheating box 1, and the inclination angle of the inclined scraper 343 matches the conical structure at the bottom of the box, forming a complete coverage of the inner wall of the box. It can clean the side wall and bottom of the preheating box 1 in a targeted manner, avoiding the accumulation of paint residue in different areas. It is especially suitable for the cleaning needs of the conical structure at the bottom of the box, ensuring the cleanliness of the inside of the device.

[0027] In an optional embodiment: one side of the vertical scraper 342 is adapted to the inner wall of the preheating box 1, and the bottom of the inclined scraper 343 is adapted to the conical inner wall of the bottom of the preheating box 1.

[0028] It should be noted that the vertical scraper 342 is well-suited to the side wall, with the scraper edge fitting tightly against the inner wall without rigid friction. The same applies to the oblique scraper 343 and the conical bottom. This ensures effective scraping while preventing scratches on the inner liner. The precise fit ensures no dead angles during scraping, reduces wear between the scraper and the box wall, extends the equipment's service life, and maintains a long-term stable scraping effect.

[0029] In an optional embodiment: a mounting base 35 is fixedly installed at the center of the top of the cover 2, a drive motor 32 is fixedly installed on the top of the mounting base 35, and the bottom of the output shaft of the drive motor 32 is fixedly installed with the top of the rotating rod 31.

[0030] It should be noted that the mounting base 35 is made of thickened metal plate and is firmly connected to the cover 2 by bolts, providing stable support for the drive motor 32; the motor output shaft and the rotating rod 31 are fixed by coupling or direct welding to ensure the stability of power transmission. The mounting base 35 enhances the installation stability of the drive motor 32 and reduces vibration and noise during operation; the direct connection between the motor and the rotating rod 31 improves the power transmission efficiency and reduces the probability of failure.

[0031] In an optional embodiment, a mass flow meter 54 is installed on the outer wall of the discharge pipe 51, and the mass flow meter 54 is located below the solenoid valve 52.

[0032] It should be noted that the mass flow meter 54 can monitor the quality of the coating passing through the discharge pipe 51 in real time and feed the data back to the control system, forming a closed-loop control with the solenoid valve 52 and the metering pump 53. Its installation position is below the solenoid valve 52, which can accurately measure the actual output amount of coating, realizing real-time monitoring and feedback of coating delivery. Together with the metering pump 53 and the solenoid valve 52, it can greatly improve the delivery accuracy and meet the strict requirements of PVD coating processing for the amount of raw materials.

[0033] In an optional embodiment: a sealing ring is installed at the connection between the preheating box 1 and the box cover 2, and a support frame 6 is fixedly installed on the bottom outer wall of the preheating box 1.

[0034] It should be noted that the sealing ring is made of high-temperature resistant silicone or fluororubber material, which fills the gap between the box cover 2 and the preheating box 1 after compression to achieve a seal; the support frame 6 consists of multiple symmetrically distributed metal brackets with anti-slip pads or fixing holes at the bottom, which can stably support the entire device. The sealing ring enhances the sealing performance of the device, reduces heat loss and external contamination; the support frame 6 improves the placement stability of the device, avoids displacement caused by vibration during operation, and improves operational safety.

[0035] A PVD coating processing equipment includes a preheating device and a coating processing equipment body 7. A fixing frame 8 is fixedly installed on one side of the coating processing equipment body 7, and a preheating box 1 is fixedly installed on the top of the fixing frame 8 via a support frame 6.

[0036] The fixed frame 8 and the coating processing equipment body 7 are connected by integrated welding or bolts to ensure structural strength; the preheating device is fixed to the fixed frame 8 through the support frame 6 to achieve a compact layout with the processing equipment and shorten the coating delivery path.

[0037] In an optional embodiment: the metering pump 53 is fixedly mounted on the top surface of the mounting frame 8, and the discharge end of the metering pump 53 is connected to the feed end of the coating processing equipment body 7 through a pipe.

[0038] It should be noted that the fixing method of the metering pump 53 and the fixed frame 8 ensures the stability of its operation and avoids the impact of vibration on the metering accuracy; the connecting pipe is made of heat-insulating material to reduce the heat loss of the coating during the transportation process; the direct connection between the metering pump 53 and the processing equipment reduces the loss and pollution in the coating transportation process; the heat-insulating pipe maintains the temperature stability of the coating after preheating, and ultimately ensures the consistency of PVD coating processing quality.

[0039] Working principle: When the preheating device of this utility model is in use, PVD coating is added into the preheating box 1 through the feed port 4 of the box cover 2. The sealing cover is closed to form a closed space. The sealing ring ensures that the preheating environment is sealed, reducing heat loss and impurity entry. The electric heating layer 103 is working, heating the coating through the metal inner liner 104. At the same time, the drive motor 32 drives the rotating rod 31 to rotate, so that the stirring rod 33 continuously stirs the coating to ensure uniform heating. The scraping assembly 34 rotates synchronously with the rotating rod 31. The vertical scraper 342 cleans the inner wall of the box, and the inclined scraper 343 cleans the conical bottom to avoid coating residue. After preheating, the solenoid valve 52 opens, and the metering pump 53 starts to send the coating out from the discharge pipe 51. The mass flow meter 54 monitors the conveying volume in real time to achieve accurate metering and control, meeting the usage requirements of subsequent processing. When used as part of the PVD coating processing equipment, the preheating device is fixed to the support frame 6 and the fixed frame 8 and integrated with the coating processing equipment body 7. The metering pump 53 directly conveys the preheated coating to the feed end of the processing equipment, shortening the conveying path, reducing temperature loss, and ensuring stable coating processing quality.

[0040] The control method described in this application uses a PLC or industrial computer as the control core, which can simultaneously process solenoid valve switching signals, mass flow meter feedback data, and quantitative pump drive commands to achieve multi-parameter coordinated control. The PLC is installed on one side wall of the coating processing equipment body 7. Parameters such as target flow rate and delivery time are set through a touch screen, and data such as actual flow rate and cumulative delivery volume are displayed in real time, improving the ease of operation. The control circuit of the PLC can be implemented by those skilled in the art through simple programming, which is common knowledge in the field. Furthermore, this application is mainly used to protect the structure, shape, and their combination, so the control method and circuit connection will not be explained in detail here.

[0041] 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 device, characterized in that, Including the preheating box; The box cover is fixedly installed on the top of the preheating box, and the box cover is provided with a feed port, the top of which is hinged with a sealing cover; The stirring mechanism, installed on the box cover, is used to stir the PVD coating inside the preheating box; A quantitative conveying mechanism, installed at the bottom of the preheating box, is used to quantitatively convey the preheated PVD coating. The quantitative conveying mechanism includes a discharge pipe, which is fixedly installed at the bottom discharge port of the preheating box, and a solenoid valve is installed on the outer wall of the discharge pipe. A quantitative pump is fixedly connected to the bottom of the discharge pipe.

2. The preheating device according to claim 1, characterized in that: The preheating box includes an outer box, an insulation layer is fixedly installed on the inner wall of the outer box, an electric heating layer is provided on the inner wall of the insulation layer, and a metal inner liner is fixedly installed on the inner wall of the electric heating layer.

3. The preheating device according to claim 1, characterized in that: The stirring mechanism includes a rotating rod, which is rotatably mounted on the bottom of the box cover via a bearing. The top of the rotating rod passes through the box cover and is connected to a drive motor. Several sets of stirring rods are fixedly installed on the outer wall of the rotating rod, and a scraping assembly for scraping material from the inner wall of the preheating box is installed on the outer wall of the rotating rod.

4. The preheating device according to claim 3, characterized in that: The scraping assembly includes a top connecting frame, which is fixedly sleeved on the outer wall of the rotating rod. Vertical scrapers are fixedly connected to both ends of the top connecting frame, and inclined scrapers are fixedly connected to the bottom of the two sets of vertical scrapers. One end of each set of inclined scrapers is fixedly connected to the bottom outer wall of the rotating rod.

5. The preheating device according to claim 4, characterized in that: One side of the vertical scraper is adapted to the inner wall of the preheating box, and the bottom of the inclined scraper is adapted to the conical inner wall of the bottom of the preheating box.

6. The preheating device according to claim 3, characterized in that: A mounting base is fixedly installed at the center of the top of the box cover. The drive motor is fixedly installed on the top of the mounting base, and the bottom of the drive motor output shaft is fixedly installed with the top of the rotating rod.

7. The preheating device according to claim 1, characterized in that: A mass flow meter is installed on the outer wall of the discharge pipe, and the mass flow meter is located below the solenoid valve.

8. The preheating device according to claim 1, characterized in that: A sealing ring is installed at the connection between the preheating box and the box cover, and a support frame is fixedly installed on the bottom outer wall of the preheating box.

9. A PVD coating processing equipment, comprising the preheating device as described in any one of claims 1-8, characterized in that, Also includes: The coating processing equipment body has a fixed frame fixedly installed on one side, and the preheating box is fixedly installed on the top of the fixed frame by a support frame.

10. The PVD coating processing equipment according to claim 9, characterized in that: The metering pump is fixedly installed on the top surface of the fixed frame, and the discharge end of the metering pump is connected to the feed end of the coating processing equipment body through a pipe.

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