Drying device

Abstract

The utility model belongs to the technical field of surface treatment, and discloses a drying device. The drying device comprises a workbench, a heating unit, a cooling unit, a temperature control unit and a material moving unit, the heating unit comprises an induction coil, and the cooling unit communicates with the induction coil and is used for providing a cooling medium for the induction coil and ensuring the water temperature at the induction coil, so that the drying process is met; the temperature control unit comprises a high-frequency generator, and the high-frequency generator is electrically connected with the induction coil and used for inputting high-frequency current to the induction coil, so that an alternating electromagnetic field is generated in the induction coil; the feeding mechanism and the discharging mechanism of the material moving unit can convey machined parts at the two ends of an induction coil, when the machined parts penetrate through the induction coil, the eddy current effect can be generated in an alternating electromagnetic field, a large amount of heat is generated, then coatings on the surfaces of the machined parts are dried, and the drying device is small in heat energy loss, high in heat energy utilization rate and capable of achieving energy conservation and emission reduction. And the material moving unit is arranged, so that the drying efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of surface treatment technology, and in particular to a drying device. Background Technology

[0002] Surface treatment technology involves forming a protective surface layer on a substrate using various methods. Spray coating is widely used for surface treatment of workpieces of all sizes due to its simplicity and low cost. However, metal pipes, being inherently susceptible to corrosion, require surface treatment in special operating environments. When the operating temperature of a metal pipe exceeds 350℃, an inorganic coating system is generally chosen. After spraying, this coating undergoes heat treatment for drying / sintering to enhance its performance.

[0003] If an oven is used, or the air inside the oven is heated by electric or gas heating, the heating speed is slow and the drying efficiency is low. Furthermore, the oven needs to be preheated in advance, and if there is a temporary stop in the middle, it needs to be kept warm, resulting in a large loss of heat energy and a reduction in the utilization rate of heat energy.

[0004] Therefore, a drying device is needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a drying device that uses a large amount of heat generated by the eddy current effect of an energized induction coil to dry the coating of a metal tube. This device can ensure drying efficiency, improve heat utilization, and achieve high drying efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A drying device for drying metal workpieces, the drying device comprising:

[0008] Workbench;

[0009] A heating unit, the heating unit including an induction coil, and a heating area is formed on the worktable at a position corresponding to the induction coil;

[0010] A cooling unit, which is connected to the induction coil, is used to provide a cooling medium to the induction coil to cool it down.

[0011] A temperature control unit, the temperature control unit including a high-frequency generator, the high-frequency generator and the induction coil being electrically connected;

[0012] A material transfer unit is used to transfer the workpiece. The material transfer unit includes a feeding mechanism and a discharging mechanism. The feeding mechanism is located on one side of the heating area along the transfer direction of the workpiece, and the discharging mechanism is located on the other side of the heating area along the transfer direction of the workpiece. The feeding mechanism and the discharging mechanism are used to transport the workpiece at both ends of the induction coil.

[0013] As an optional technical solution, the heating unit further includes a protective sleeve, and the induction coil is disposed inside the protective sleeve. The induction coil is spiral-shaped to form a channel inside for transferring the workpiece, and the channel is located within the heating area.

[0014] As an optional technical solution, the temperature control unit also includes a temperature control device, which is electrically connected to the high-frequency generator and the cooling unit. The temperature control device can adjust the output power of the high-frequency generator and the output flow rate of the cooling unit.

[0015] As an optional technical solution, the temperature control unit also includes a temperature measuring element. The protective sleeve is provided with a temperature measuring hole, one end of the temperature measuring element extends into the temperature measuring hole, and the other end of the temperature measuring element is electrically connected to the temperature control unit.

[0016] As an optional technical solution, the feeding mechanism includes a feeding base, a feeding annular slide rail, and a feeding clamp assembly. The feeding annular slide rail is disposed on the feeding base, and the feeding clamp assembly is disposed on the feeding annular slide rail. The feeding clamp assembly can feed material into the heating area under the drive of the feeding annular slide rail.

[0017] And / or, the discharge mechanism includes a discharge base, a discharge annular slide rail, and a discharge clamp assembly. The discharge annular slide rail is disposed on the discharge base, and the discharge clamp assembly is disposed on the discharge annular slide rail. The discharge clamp assembly is capable of discharging the processed workpiece output from the heating zone under the drive of the discharge annular slide rail.

[0018] As an optional technical solution, the feeding fixture assembly includes a feeding plug and a plurality of feeding clamps. Along the feeding direction, the feeding plug is disposed at the rear of the plurality of feeding clamps. The feeding plug can abut against the workpiece, and the feeding clamps can guide the workpiece.

[0019] And / or, the discharge clamp assembly includes a discharge plug and a plurality of discharge clamps. Along the discharge direction, the discharge plug is disposed at the front of the plurality of discharge clamps. The discharge plug can abut against the workpiece, and the discharge clamps can clamp the outer periphery of the workpiece.

[0020] As an optional technical solution, the feeding clamp includes a feeding connector and a guide frame. The feeding connector is connected to the feeding annular slide rail, and the guide frame is disposed on the feeding connector. The guide frame has a guide groove that extends along the movement direction of the feeding annular slide rail.

[0021] And / or, the discharge clamp includes a discharge connector and a friction element, the discharge connector is connected to the discharge annular slide rail, the friction element is disposed on the discharge connector, the friction element has a friction groove, and the friction groove extends along the movement direction of the discharge annular slide rail.

[0022] As an optional technical solution, the feeding base is provided with a first annular groove, and the feeding annular slide rail is disposed in the first annular groove. The first annular groove includes a first horizontal part and a first recessed part. The horizontal height of the first horizontal part is higher than the horizontal height of the first recessed part, and the first horizontal part and the first recessed part are smoothly transitioned. The first slide rail is at least one end near the induction coil, which is the first recessed part.

[0023] And / or, the discharge base is provided with a second annular groove, the discharge annular slide rail is provided in the second annular groove, the second annular groove includes a second horizontal part and a second recessed part, the horizontal height of the second horizontal part is higher than the horizontal height of the second recessed part, and the second horizontal part and the second recessed part are smoothly transitioned, and the second annular groove is at least one end near the induction coil as the second recessed part.

[0024] As an optional technical solution, the heating unit, the temperature control unit, and the material transfer unit are all disposed on the worktable.

[0025] As an optional technical solution, the cooling unit includes a water tank and a cooling structure, wherein the water tank is used to store the cooling medium and the cooling structure is used to cool the cooling medium in the water tank.

[0026] The beneficial effects of this utility model are:

[0027] This utility model discloses a drying device, which includes a workbench, a heating unit, a cooling unit, a temperature control unit, and a material transfer unit. The heating unit includes an induction coil, and the cooling unit is connected to the induction coil to provide a cooling medium to ensure the water temperature at the induction coil, thereby meeting the drying process requirements. The temperature control unit includes a high-frequency generator, which is electrically connected to the induction coil to input a high-frequency current to the induction coil, thereby generating an alternating electromagnetic field within the induction coil. The feeding and discharging mechanisms of the material transfer unit can transport the workpieces at both ends of the induction coil. When the workpieces pass through the induction coil, an eddy current effect is generated in the alternating electromagnetic field, producing a large amount of heat, which then dries the coating on the surface of the workpieces. This drying device has low heat loss, high heat utilization, and high drying efficiency due to the material transfer unit. Attached Figure Description

[0028] Figure 1 This is a top view of the drying device according to an embodiment of the present invention;

[0029] Figure 2 This is a perspective view of the drying device according to an embodiment of the present invention;

[0030] Figure 3 yes Figure 2 A magnified view of part A in the image;

[0031] Figure 4 yes Figure 2 A magnified view of part B in the image;

[0032] Figure 5 yes Figure 2 A magnified view of part C;

[0033] Figure 6 This is a schematic diagram of the structure of the induction coil according to an embodiment of the present invention.

[0034] In the picture:

[0035] 2. Metal pipe;

[0036] 10. Heating unit; 11. Induction coil; 111. Channel; 12. Protective sleeve; 121. Temperature measuring hole; 13. Heating area;

[0037] 20. Cooling unit;

[0038] 30. Temperature control unit; 31. Temperature sensor;

[0039] 41. Feeding mechanism; 411. Feeding base; 4121. Feeding plug; 4122. Feeding clamp; 4123. Feeding connector; 4124. Guide frame; 4125. Guide groove; 413. First annular groove; 4131. First horizontal part; 4132. First recessed part; 42. Discharge mechanism; 421. Discharge base; 4221. Discharge plug; 4222. Discharge clamp; 4223. Discharge connector; 4224. Friction component; 4225. Friction groove; 423. Second annular groove; 4231. Second horizontal part; 4232. Second recessed part;

[0040] 50. Workbench. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0042] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0045] like Figures 1 to 6 As shown, this embodiment provides a drying device for drying metal workpieces. The drying device includes a worktable 50, a heating unit 10, a cooling unit 20, a temperature control unit 30, and a material transfer unit. The heating unit 10 includes an induction coil 11. A heating area 13 is formed on the worktable 50 at a position corresponding to the induction coil 11. The cooling unit 20 is connected to the induction coil 11 and is used to provide a cooling medium to the induction coil 11 to cool it down. The temperature control unit 30 includes a high-frequency generator, which is electrically connected to the induction coil 11. The material transfer unit is used to transfer the workpiece. The material transfer unit includes a feeding mechanism 41 and a discharging mechanism 42. The feeding mechanism 41 is located on one side of the heating area 13 along the transfer direction of the workpiece, and the discharging mechanism 42 is located on the other side of the heating area 13 along the transfer direction of the workpiece. The feeding mechanism 41 and the discharging mechanism 42 are used to transport the workpiece at both ends of the induction coil 11.

[0046] Specifically, in this embodiment, the high-frequency generator and the induction coil 11 are electrically connected. The high-frequency generator can input a high-frequency current into the induction coil 11, thereby generating an alternating electromagnetic field within the induction coil 11. The feeding mechanism 41 of the transfer unit is located on one side of the heating area 13 along the transfer direction of the workpiece, and is used to input the workpiece into the heating area 13. The discharging mechanism 42 of the transfer unit is located on the other side of the heating area 13 along the transfer direction of the workpiece, and is used to output the workpiece that has passed through the heating area 13. In this embodiment, the workpiece is a coated metal tube 2. During the process of the feeding mechanism 41 and the discharging mechanism 42 transporting the workpiece, the metal tube 2 passes through the induction coil 11, and the metal tube 2 generates an eddy current effect through the alternating electromagnetic field, thereby generating a large amount of heat to dry the coating of the metal tube 2. The cooling unit 20 can provide a cooling medium to the induction coil 11, thereby cooling the induction coil 11 and ensuring the water temperature required for the drying process, thus ensuring the drying effect. This drying device has a good drying effect, high drying efficiency, and effectively improves the utilization rate of heat, thereby reducing energy consumption.

[0047] Specifically, in this embodiment, since copper has excellent electrical conductivity, low resistivity, good ductility and toughness, excellent thermal conductivity and good corrosion resistance, the induction coil 11 in this embodiment is formed by winding copper tubes.

[0048] A high-frequency generator is a commonly used electronic device in the prior art for generating high-frequency electrical signals. Specifically, in this embodiment, the frequency range of the high-frequency generator is 30MHz to 80MHz. Preferably, in actual use, the frequency of the high-frequency generator is 50MHz to 60MHz.

[0049] Furthermore, such as Figure 3 and Figure 6 As shown, the heating unit 10 also includes a protective sleeve 12, and an induction coil 11 is disposed inside the protective sleeve 12. The induction coil 11 is spiral-shaped to form a channel 111 inside for transferring the workpiece. The channel 111 is located within the heating area 13. Specifically, in this embodiment, the induction coil 11 is enclosed inside the protective sleeve 12, which can prevent short circuits caused by contact between the external metal tube 2 and the induction coil 11, thereby affecting the normal drying process, and can also prevent wear of the induction coil 11, thus improving its service life.

[0050] Specifically, in this embodiment, the protective sleeve 12 is made of ceramic and needs to have good high temperature resistance to avoid damage to the protective sleeve 12, which would affect the normal operation of the drying process.

[0051] In another embodiment, the heating unit 10 further includes a bracket, and a protective sleeve 12 is disposed on the bracket to ensure the positional stability of the protective sleeve 12 and the induction coil 11, thereby ensuring that the metal tube 2 can pass through the induction coil 11 normally, and thus ensuring the drying effect of the metal tube 2.

[0052] Furthermore, such as Figure 3 As shown, the temperature control unit 30 also includes a temperature control device, which is electrically connected to the high-frequency generator and the cooling unit 20. The temperature control device can adjust the output power of the high-frequency generator and the output flow rate of the cooling unit 20. Specifically, in this embodiment, the temperature control device of the temperature control unit 30 can adjust the output power of the high-frequency generator to control the intensity of the alternating electromagnetic field generated in the induction coil 11, thereby controlling the eddy current effect generated when the metal tube 2 passes through the induction coil 11, and thus controlling the drying temperature; and the temperature control device can adjust the output flow rate of the cooling medium of the cooling unit 20, thereby making the temperature control at the induction coil 11 more precise, thus ensuring the drying effect of the metal tube 2.

[0053] Specifically, in this embodiment, the temperature control unit 30 adopts the high-frequency generator and temperature control integrated machine in the prior art. Its working principle is the prior art and will not be described in detail here.

[0054] Specifically, in this embodiment, the cooling unit 20 is connected to the high-frequency generator and the integrated temperature controller via a first pipeline. The high-frequency generator and the integrated temperature controller are connected to the induction coil 11 via a second pipeline, which is a copper pipe capable of both supplying current to the induction coil 11 and providing a cooling medium. In actual use, the cooling unit 20 provides a cooling medium to the induction coil 11 via the high-frequency generator and the integrated temperature controller. After cooling the induction coil 11, the cooling medium returns to the cooling unit 20 via the high-frequency generator and the integrated temperature controller to ensure normal circulation of the cooling medium.

[0055] Furthermore, such as Figure 3 As shown, the temperature control unit 30 also includes a temperature measuring element. A temperature measuring hole 121 is provided on the protective sleeve 12. One end of the temperature measuring element extends into the temperature measuring hole 121, and the other end is electrically connected to the temperature control unit. Specifically, in this embodiment, the temperature measuring element is a temperature sensor 31. One end of the temperature sensor 31 is electrically connected to the temperature control unit, and the other end extends into the temperature measuring hole 121 of the protective sleeve 12. The temperature sensor 31 can feed back the real-time temperature at the induction coil 11 to the temperature control unit. The temperature control unit adjusts the output power of the high-frequency generator and the output flow rate of the cooling unit 20 based on this real-time temperature value, thereby ensuring that the temperature at the induction coil 11 meets the temperature required for drying the metal tube 2.

[0056] Specifically, in this embodiment, the type of temperature sensor 31 is selected according to the actual use, which will not be elaborated here.

[0057] Further, please refer to Figures 2 to 5The feeding mechanism 41 includes a feeding base 411, a feeding annular slide rail, and a feeding clamp assembly. The feeding annular slide rail is disposed on the feeding base 411, and the feeding clamp assembly is disposed on the feeding annular slide rail. The feeding clamp assembly can feed material into the heating zone 13 under the drive of the feeding annular slide rail; and / or, the discharging mechanism 42 includes a discharging base 421, a discharging annular slide rail, and a discharging clamp assembly. The discharging annular slide rail is disposed on the discharging base 421, and the discharging clamp assembly is disposed on the discharging annular slide rail. The discharging clamp assembly can discharge the processed workpiece output from the heating zone 13 under the drive of the discharging annular slide rail. Specifically, in this embodiment, the feeding mechanism 41 further includes a feeding servo motor, which is driven to the feeding annular slide rail and is used to drive the feeding annular slide rail to move in a fixed direction. The feeding clamp assembly is disposed on the feeding annular slide rail and moves synchronously with the feeding annular slide rail, thereby moving the workpiece to the inlet of the induction coil 11. The discharging mechanism 42 further includes a discharging servo motor, which is driven to the discharging annular slide rail and is used to drive the discharging annular slide rail to move in a fixed direction. The discharging clamp assembly is disposed on the discharging annular slide rail and moves synchronously with the discharging annular slide rail, thereby discharging the workpiece from the outlet of the induction coil 11.

[0058] Further, please refer to Figures 2 to 5 The feeding clamp assembly includes a feeding plug 4121 and a plurality of feeding clamps 4122. Along the feeding direction, the feeding plug 4121 is disposed at the rear of the plurality of feeding clamps 4122. The feeding plug 4121 can abut against the workpiece, and the feeding clamps 4122 can guide the workpiece. And / or, the discharging clamp assembly includes a discharging plug 4221 and a plurality of discharging clamps 4222. Along the discharging direction, the discharging plug 4221 is disposed at the front of the discharging clamps 4222. The discharging plug 4221 can abut against the workpiece, and the discharging clamps 4222 can clamp the outer periphery of the workpiece. Specifically, in this embodiment, along the feeding direction, the feeding plug 4121 is disposed at the rear of several feeding clamps 4122. The feeding plug 4121 can abut against the metal tube 2 to push the metal tube 2 to move along the feeding direction, ensuring normal feeding. The several feeding clamps 4122 can clamp the outer periphery of the metal tube 2 to guide the metal tube 2 and prevent the position of the metal tube 2 from shifting, so as to ensure that the metal tube 2 can be aligned with the inlet of the induction coil 11 and that the metal tube 2 can pass through the induction coil 11 normally. Along the discharging direction, the discharging plug 4221 is disposed at the front of several discharging clamps 4222 and can abut against the metal tube 2 to position the metal tube 2, so as to ensure that the metal tube 2 can be within the range of the discharging clamp assembly and to ensure normal discharging of the metal tube 2. The several discharging clamps 4222 can clamp the outer periphery of the metal tube 2 and can provide friction to the metal tube 2, so that the metal tube 2 can move along the discharging direction.

[0059] Specifically, in this embodiment, both the feeding clamp assembly and the discharging clamp assembly are provided in two sets for cyclical reciprocating movement, thereby ensuring that the two adjacent metal tubes 2 can be continuously conveyed, thereby ensuring the drying efficiency of the metal tubes 2.

[0060] Further, please refer to Figures 2 to 5 The feeding clamp 4122 includes a feeding connector 4123 and a guide frame 4124. The feeding connector 4123 is connected to the feeding annular slide rail, and the guide frame 4124 is disposed on the feeding connector 4123. The guide frame 4124 has a guide groove 4125, which extends along the movement direction of the feeding annular slide rail. And / or, the discharging clamp 4222 includes a discharging connector 4223 and a friction member 4224. The discharging connector 4223 is connected to the discharging annular slide rail, and the friction member 4224 is disposed on the discharging connector 4223. The friction member 4224 has a friction groove 4225, which extends along the movement direction of the discharging annular slide rail. Specifically, in this embodiment, the feeding connector 4123 is connected to the feeding annular slide rail, and the guide frame 4124 is disposed on the feeding connector 4123. The guide frame 4124 is made of plastic. Since the coating of the metal tube 2 before drying has low hardness and poor strength, the use of plastic for the guide frame 4124 can avoid excessive friction with the metal tube 2, thereby avoiding damage to the coating of the metal tube 2. The discharging connector 4223 is connected to the discharging annular slide rail, and the friction element 4224 is disposed on the discharging connector 4223. The friction element 4224 has a friction groove 4225, which extends along the movement direction of the discharging annular slide rail. Since the friction element 4224 needs to rub against the metal tube 2 to ensure the movement of the metal tube 2, the friction element 4224 is a porous ceramic part. The porous ceramic part can not only ensure friction with the metal tube 2, thereby ensuring the normal conveying of the metal tube 2, but also has good heat resistance, thereby increasing the service life.

[0061] In this embodiment, since the metal tube 2 in contact with the feeding clamp assembly is at a low temperature, the feeding plug 4121 and the feeding connector 4123 do not require additional heat resistance. Therefore, the feeding plug 4121 and the feeding connector 4123 can be made of 304 stainless steel to meet the usage requirements. However, the metal tube 2 in contact with the discharging clamp assembly is at a high temperature, which requires the discharging plug 4221 and the discharging connector 4223 to have a certain degree of heat resistance to improve their service life. Therefore, the discharging plug 4221 and the discharging connector 4223 are made of 310 stainless steel to ensure their service life.

[0062] Further, please refer to Figure 2The feeding base 411 is provided with a first annular groove 413, and a feeding annular slide rail is provided in the first annular groove 413. The first annular groove 413 includes a first horizontal part 4131 and a first recessed part 4132. The horizontal height of the first horizontal part 4131 is higher than the horizontal height of the first recessed part 4132, and the first horizontal part 4131 and the first recessed part 4132 are smoothly transitioned. The first recessed part 4132 is at least one end of the first slide rail near the induction coil 11. And / or, the discharging base 421 is provided with a second annular groove 423, and a discharging annular slide rail is provided in the second annular groove 423. The second annular groove 423 includes a second horizontal part 4231 and a second recessed part 4232. The horizontal height of the second horizontal part 4231 is higher than the horizontal height of the second recessed part 4232, and the second horizontal part 4231 and the second recessed part 4232 are smoothly transitioned. The second recessed part 4232 is at least one end of the second annular groove 423 near the induction coil 11.

[0063] Specifically, in this embodiment, please refer to Figure 2 The first annular groove 413 includes two straight sections and two arc-shaped sections. The end of the first annular groove 413 near the induction coil 11 is a first recessed portion 4132. The first recessed portion 4132 includes at least the arc-shaped portion of the first annular groove 413 near the induction coil 11, which causes the height of the feeding annular slide rail to decrease when it approaches the induction coil 11. This also causes the height of the feeding plug 4121 and the feeding clamp 4122 to decrease when they approach the induction coil 11. In actual use, the feeding clamp 4122 located in the straight area will enter the first recessed portion 4132 before entering the arc-shaped section, thereby causing the guide frame 4124 of the feeding clamp 4122 to separate from the metal tube 2. This can effectively avoid the additional force on the metal tube 2 caused by the angle between the two guide grooves 4125 of the two adjacent feeding clamps 4122, thereby preventing the metal tube 2 from getting stuck and improving the smoothness of feeding. The second annular groove 423 has a second recessed portion 4232 at one end near the induction coil 11. This recessed portion 4232 includes an arc-shaped section containing the second annular groove 423 near the induction coil 11, causing the height of the discharge annular slide rail to decrease when near the induction coil 11. This also lowers the height of the discharge plug 4221 and the discharge clamp 4222 near the induction coil 11. In actual use, the metal tube 2 output from the outlet of the induction coil 11 first contacts the discharge plug 4221, and then... The height of the friction element 4224 of the discharge clamp 4222 at the arc is lower than that of the metal tube 2. As the discharge annular slide rail moves, the discharge clamp 4222 moves to the straight area. At this time, the friction groove 4225 of the discharge clamp 4222 and the extension direction of the metal tube 2 are consistent, so that the friction groove 4225 can make good contact with the metal tube 2, avoiding the metal tube 2 from getting stuck due to the angle between the friction grooves 4225 of two adjacent discharge clamps 4222, thus ensuring the normal conveying of the metal tube 2.

[0064] In another embodiment, the arc-shaped portions at both ends of the first annular groove 413 are both first recessed portions 4132, which ensures that the metal tube 2 will not get stuck at either the inlet or outlet end of the feeding mechanism 41, thereby improving the automation level of the drying device. Simultaneously, the arc-shaped portions at both ends of the second annular groove 423 are both second recessed portions, which ensures that the metal tube 2 will not get stuck at either the inlet or outlet end of the discharge mechanism 42, improving automation, reducing labor intensity, and increasing drying efficiency. In practical use, the metal tube 2 to be dried can be conveyed to the inlet end of the feeding mechanism 41 by an automated feeding device. The feeding mechanism 41 operates normally, conveying the metal tube 2 to the induction coil 11, where the induction coil 11 dries the metal tube 2. Simultaneously, the discharge mechanism 42 conveys the metal tube 2 to another automated feeding device to complete the automated drying of the metal tube 2, improving drying efficiency and reducing labor intensity.

[0065] Specifically, in this embodiment, both the feeding annular slide rail and the discharging annular slide rail have a torque warning function. When the metal tube 2 gets stuck between the two feeding clamps 4122 or the two discharging clamps 4222, both the feeding annular slide rail and the discharging annular slide rail will brake and output a signal to the temperature control unit 30, so that the high-frequency generator stops outputting, thereby ensuring that the heating unit 10 stops heating.

[0066] Further, please refer to Figure 2 The heating unit 10, temperature control unit 30, and material transfer unit are all located on the workbench 50. Specifically, in this embodiment, the workbench 50 integrates the heating unit 10, temperature control unit 30, and material transfer unit, improving the overall integrity of the drying device. Preferably, casters are also provided at the four corners of the bottom of the workbench 50, which facilitates the movement of the drying device in actual use, improving its flexibility and making it easier for personnel to use.

[0067] Furthermore, the cooling unit 20 includes a water tank and a cooling structure. The water tank is used to store the cooling medium, and the cooling structure is used to cool the cooling medium in the water tank. Specifically, in this embodiment, the cooling unit 20 includes a water tank and a cooling structure. The cooling structure can cool the cooling medium after it has been heated by the induction coil 11, thereby ensuring that the temperature of the cooling medium in the water tank is always within a preset range, thus ensuring a good cooling effect on the induction coil 11, and thus ensuring the water temperature required for the drying process of the metal tube 2.

[0068] Specifically, in this embodiment, the cooling structure can be a refrigerant or a compression refrigeration structure, which are all existing technologies and will not be described in detail here.

[0069] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A drying apparatus for drying metal workpieces, characterized in that, The drying device includes: Workbench; A heating unit, the heating unit including an induction coil, and a heating area is formed on the worktable at a position corresponding to the induction coil; A cooling unit, which is connected to the induction coil, is used to provide a cooling medium to the induction coil to cool it down. A temperature control unit, the temperature control unit including a high-frequency generator, the high-frequency generator and the induction coil being electrically connected; A material transfer unit is used to transfer the workpiece. The material transfer unit includes a feeding mechanism and a discharging mechanism. The feeding mechanism is located on one side of the heating area along the transfer direction of the workpiece, and the discharging mechanism is located on the other side of the heating area along the transfer direction of the workpiece. The feeding mechanism and the discharging mechanism are used to transport the workpiece at both ends of the induction coil.

2. The drying apparatus according to claim 1, characterized in that, The heating unit also includes a protective sleeve, and the induction coil is disposed inside the protective sleeve. The induction coil is spiral-shaped to form a channel inside for transferring the workpiece, and the channel is located within the heating area.

3. The drying apparatus according to claim 2, characterized in that, The temperature control unit also includes a temperature control device, which is electrically connected to the high-frequency generator and the cooling unit. The temperature control device can adjust the output power of the high-frequency generator and the output flow rate of the cooling unit.

4. The drying apparatus according to claim 3, characterized in that, The temperature control unit also includes a temperature measuring element. The protective sleeve is provided with a temperature measuring hole. One end of the temperature measuring element extends into the temperature measuring hole, and the other end of the temperature measuring element is electrically connected to the temperature control unit.

5. The drying apparatus according to claim 1, characterized in that, The feeding mechanism includes a feeding base, a feeding annular slide rail, and a feeding clamp assembly. The feeding annular slide rail is disposed on the feeding base, and the feeding clamp assembly is disposed on the feeding annular slide rail. The feeding clamp assembly can feed material into the heating area under the drive of the feeding annular slide rail. And / or, the discharge mechanism includes a discharge base, a discharge annular slide rail, and a discharge clamp assembly. The discharge annular slide rail is disposed on the discharge base, and the discharge clamp assembly is disposed on the discharge annular slide rail. The discharge clamp assembly is capable of discharging the processed workpiece output from the heating zone under the drive of the discharge annular slide rail.

6. The drying apparatus according to claim 5, characterized in that, The feeding fixture assembly includes a feeding plug and a plurality of feeding clamps. Along the feeding direction, the feeding plug is disposed at the rear of the plurality of feeding clamps. The feeding plug can abut against the workpiece, and the feeding clamps can guide the workpiece. And / or, the discharge clamp assembly includes a discharge plug and a plurality of discharge clamps. Along the discharge direction, the discharge plug is disposed at the front of the plurality of discharge clamps. The discharge plug can abut against the workpiece, and the discharge clamps can clamp the outer periphery of the workpiece.

7. The drying apparatus according to claim 6, characterized in that, The feeding clamp includes a feeding connector and a guide frame. The feeding connector is connected to the feeding annular slide rail, and the guide frame is disposed on the feeding connector. The guide frame has a guide groove that extends along the movement direction of the feeding annular slide rail. And / or, the discharge clamp includes a discharge connector and a friction element, the discharge connector is connected to the discharge annular slide rail, the friction element is disposed on the discharge connector, the friction element has a friction groove, and the friction groove extends along the movement direction of the discharge annular slide rail.

8. The drying apparatus according to claim 5, characterized in that, The feeding base is provided with a first annular groove, and the feeding annular slide rail is provided in the first annular groove. The first annular groove includes a first horizontal part and a first recessed part. The horizontal height of the first horizontal part is higher than the horizontal height of the first recessed part, and the first horizontal part and the first recessed part are smoothly transitioned. The first annular groove is at least one end close to the induction coil, which is the first recessed part. And / or, the discharge base is provided with a second annular groove, the discharge annular slide rail is provided in the second annular groove, the second annular groove includes a second horizontal part and a second recessed part, the horizontal height of the second horizontal part is higher than the horizontal height of the second recessed part, and the second horizontal part and the second recessed part are smoothly transitioned, and the second annular groove is at least one end near the induction coil as the second recessed part.

9. The drying apparatus according to claim 1, characterized in that, The heating unit, the temperature control unit, and the material transfer unit are all located on the worktable.

10. The drying apparatus according to any one of claims 1-9, characterized in that, The cooling unit includes a water tank and a cooling structure. The water tank is used to store the cooling medium, and the cooling structure is used to cool the cooling medium in the water tank.

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