Automatic heating device

Abstract

The utility model belongs to the technical field of furnace facilities, and discloses an automatic heating device which comprises a rack. The pipeline is arranged on the rack; the feeding and pushing mechanism is arranged on the rack, located at one end of the pipeline and used for conveying the workpieces into the pipeline and enabling the workpieces to advance in the pipeline; the heating mechanism is arranged on the rack and located on one side of the feeding and pushing mechanism, the heating mechanism comprises an induction heating assembly and a resistance heating assembly, and the induction heating assembly and the resistance heating assembly are arranged in the length direction of the pipeline so as to heat the workpieces in the pipeline; workpieces are conveyed into the pipeline through the feeding and pushing mechanism, and the workpieces in the pipeline are sequentially subjected to primary induction heating through the induction heating assembly and then advance to the resistance heating assembly to be subjected to resistance heating again so as to reach the needed process temperature. The heating device has the effects that the time for heating the workpiece to the required process temperature is short, the heating effect is stable, and the heating device is efficient and energy-saving.

Description

Technical Field

[0001] The present application relates to the field of furnace facility technology, and more specifically, to an automated heating device. Background Art

[0002] The new generation of products uses titanium alloy as the frame material, and the titanium rod is transformed from a round rod into a blank through forging, bending, vertical forging, trimming and other processes. The workpiece must be heated to 700 or 930 degrees before processing at each of the above-mentioned stations, so a heat treatment furnace is required. In the prior art, a box-type resistance furnace is usually used for heating. The workpiece is continuously loaded from the loading door and passed through the furnace. The commonly used method of conveying in the furnace is to carry the workpiece on a heat-resistant steel guide rail or a heat-resistant steel conveyor belt for transportation. The workpiece in the furnace is heated by a resistor, and the heated workpiece is unloaded from the discharge door. In the process of heating the furnace body, a long period of heating is required to raise the temperature in the furnace body to a temperature that can be heat treated. In addition to the workpiece, the heated body in the furnace also includes the carrier on the guide rail or the chain plate support on the conveyor belt. Heating to the required process temperature requires a large amount of electrical energy.

[0003] With respect to the above technical means, the operation of heating the workpiece to the required process temperature in the prior art has the defects of low efficiency and high energy consumption. Utility Model Content

[0004] The embodiment of the present application provides an automated heating device that can heat a workpiece to a required process temperature in a short time with a stable heating effect, thereby achieving a high efficiency and energy-saving effect.

[0005] The present application provides an automatic heating device adopting the following technical solution:

[0006] An automatic heating device, comprising:

[0007] frame;

[0008] A pipeline, arranged on the frame, for accommodating a workpiece;

[0009] A material feeding and pushing mechanism, arranged on the frame and located at one end of the pipeline, is used to transport the workpiece into the pipeline and make the workpiece move forward in the pipeline;

[0010] A heating mechanism is arranged on the frame and located on one side of the feeding and pushing mechanism, the heating mechanism comprises an induction heating component and a resistance heating component, the induction heating component and the resistance heating component are arranged along the length direction of the pipeline to heat the workpiece in the pipeline;

[0011] The workpiece is transported into the pipeline via the loading and pushing mechanism. The workpiece in the pipeline passes through the induction heating component in turn for preliminary induction heating, and then moves to the resistance heating component for resistance heating again to reach the required process temperature.

[0012] Optionally, the induction heating component includes an induction heating coil and an infrared thermometer. The induction heating coil is arranged around the periphery of the pipeline, and the infrared thermometer is arranged toward the pipeline and detects the temperature of the workpiece inside through the pipeline. The infrared thermometer is electrically connected to the induction heating coil to control the start and stop of the heating of the induction heating coil.

[0013] Optionally, the resistance heating assembly includes a furnace body and a plurality of resistance heating elements, one end of the pipe passes through the furnace body and is arranged in the furnace body, and the plurality of resistance heating elements are installed in the furnace body to heat the workpiece in the pipe located in the furnace body.

[0014] Optionally, multiple resistance heating elements are arranged in partitions within the furnace body, and the resistance heating assembly also includes multiple groups of thermocouples, which are installed on the furnace body, each group of thermocouples corresponds to a zone of resistance heating elements and is electrically connected to the resistance heating elements, one end of the thermocouple is inserted into the furnace body to monitor the temperature of each partition within the furnace body, so as to start and stop the corresponding resistance heating elements to achieve temperature control.

[0015] Optionally, a discharge port is provided at one end of the furnace body away from the loading and pushing mechanism, and a furnace door and a door-driving electric cylinder are provided at the discharge port. The furnace door slides in cooperation with the furnace body, and the door-driving electric cylinder drives the furnace door to block or avoid the discharge port.

[0016] Optionally, the material loading and pushing mechanism includes a follower table, a push rod and a driving assembly, the follower table and the driving assembly are arranged on the frame, and the push rod is installed at the output end of the driving assembly; the follower table is provided with a material guide trough with a width for accommodating a single workpiece, the push rod is located in the material guide trough, one end of the pipeline is in contact with the follower table, and the central axis of the pipeline coincides with the central axis of the material guide trough and the workpiece, and the driving assembly drives the push rod to push the workpiece along the material guide trough into the pipeline, so that the workpieces in the pipeline are connected end to end and pressed to move forward.

[0017] Optionally, the drive assembly includes a servo slide and a push plate, the servo slide moves toward or away from the end of the pipe, the push plate is arranged on the servo slide and moves synchronously, one end of the push plate is fixedly connected to an end of the push rod away from the workpiece, the servo slide drives the push plate and thus drives the push rod to push the workpiece into the pipe.

[0018] Optionally, the loading and pushing mechanism also includes a connecting plate and a protection component, the protection component is installed on the connecting plate, and the connecting plate is arranged on the servo slide; the protection component includes a guide column, a vertical plate, a connecting plate, a spring and a pressure sensor, one end of the guide column is fixed to the push plate, and the other end is fixed to the connecting plate, the vertical plate is located between the push plate and the connecting plate and is slidably arranged on the guide column, one end of the spring is connected to the pressure sensor, and the other end of the spring is connected to the connecting plate to buffer the excessive movement of the push rod, and the pressure sensor is fixed to the vertical plate to sense the thrust of the push rod on the workpiece.

[0019] Optionally, a positioning plate is provided in the furnace body, and one end of the pipeline away from the loading and pushing mechanism is provided on the positioning plate. The positioning plate is provided with a material receiving trough, and the central axis of the material receiving trough coincides with the central axis of the pipeline. The material receiving trough is provided with a material picking area, and the material picking area is used to facilitate the clamping of the workpiece in the material receiving trough when the tool is inserted.

[0020] Optionally, the material receiving trough is provided with a chip removal countersunk hole for connecting to a chip extraction pipe, the chip removal countersunk hole is located on the side wall of the material receiving trough opposite to the pipe port, and the chip removal countersunk hole is used to absorb waste chips in the material receiving trough.

[0021] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0022] The loading and pushing mechanism transports the workpiece into the pipeline, so that the workpiece in the pipeline is inductively heated by the induction heating component. By utilizing the advantage of rapid heating of induction heating, the moving workpiece is heated to the initial heating temperature in a very short time under the action of the induction heating component, thus saving heating time; then the resistance heating component reheats the workpiece after initial heating, and utilizes resistance heating to heat the workpiece evenly, thereby improving the heating stability of the entire workpiece; the combination of the induction heating component and the resistance heating component, combining the dual advantages of rapid induction heating and stable resistance heating, shortens the heating time for the workpiece to meet the process requirements; at the same time, the workpiece in the pipeline pushes the workpiece to move in the pipeline, so that the density of the workpiece in the pipeline is high, the heating effective volume ratio is large, and it is more efficient and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an automatic heating device disclosed in an embodiment of the present application;

[0024] Figure 2 It is a cross-sectional view of the overall structure of an automatic heating device disclosed in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of an automated heating device disclosed in an embodiment of the present application, highlighting a material transport structure and an induction heating component;

[0026] Figure 4 A structural schematic diagram of an automated heating device disclosed in an embodiment of the present application that highlights a resistance heating component from another perspective;

[0027] Figure 5 A schematic diagram showing the structure of a positioning plate of an automated heating device disclosed in an embodiment of the present application;

[0028] Figure 6 This is a structural cross-sectional view of a positioning plate in an automated heating device disclosed in an embodiment of the present application.

[0029] Description of reference numerals:

[0030] 1. Frame; 11. Table; 2. Pipeline; 3. Material feeding and pushing mechanism; 31. Follow-up table; 311. Material guide trough; 312. Vertical stopper; 313. Elastic member; 314. Fixed block; 32. Push rod; 33. Driving assembly; 331. Servo slide; 332. Push plate; 34. Connecting plate; 35. Protective assembly; 351. Guide column; 352. Vertical plate; 353. Connecting plate; 354. Spring; 355. Pressure sensor; 4. Heating mechanism; 41. Induction heating Thermal component; 411, induction heating coil; 412, infrared thermometer; 42, resistance heating component; 421, furnace body; 4211, discharge port; 4212, feeding port; 4213, furnace door; 4214, door-driving electric cylinder; 4215, entrance sealing plate; 4216, refractory insulation layer; 422, resistance heating element; 423, thermocouple; 43, positioning plate; 431, receiving trough; 4311, material taking area; 4312, chip removal countersunk hole; 432, installation groove. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] The embodiment of the present application provides an automated heating device that can heat a workpiece to a required process temperature in a short time with a stable heating effect, thereby achieving a high efficiency and energy-saving effect.

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] The terms "first", "second", "third", "fourth", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] For ease of understanding, the automatic heating device in the embodiment of the present application is described below. Figure 1 An embodiment of the automatic heating device in the embodiment of the present application includes a frame 1, a pipe 2 for accommodating workpieces, a material loading and pushing mechanism 3 and a heating mechanism 4, and the pipe 2, the material loading and pushing mechanism 3 and the heating mechanism 4 are all installed on the frame 1. The material loading and pushing mechanism 3 is located at one end of the pipe 2, and is used to transport the workpieces end to end into the pipe 2, and to make the workpieces advance to the heating mechanism 4 in the pipe 2. The heating mechanism 4 heats the workpieces in the pipe 2 so that the workpieces reach the required process temperature, which is convenient for subsequent processing.

[0036] Furthermore, the number of the pipes 2 may be one or more, and the number of the feeding and pushing mechanisms 3 is set according to the number of channels, which may be a one-to-one relationship, or one feeding and pushing mechanism 3 may simultaneously push multiple pipes 2. In order to improve efficiency, in this embodiment, two pipes 2 are configured, and the two pipes 2 are arranged side by side, and two sets of feeding and pushing mechanisms 3 are used to correspond to the pipes 2 one by one to transport the workpiece.

[0037] See also Figure 2 and Figure 3 In order to facilitate the installation of the pipeline 2 and the feeding and pushing mechanism 3, the frame 1 is provided with a table 11, one end of the pipeline 2 is located on the table 11, and the remaining part of the pipeline 2 is located in the heating mechanism 4 for fixation. As a carrier of the workpiece channel, the pipeline 2 is in a straight line shape, and the cross-sectional size and shape of the pipeline 2 are set corresponding to the shape and size of the product, such as circular, rectangular, trapezoidal, etc. In this embodiment, the pipeline 2 is preferably a quartz tube, which can be a welded combination, or a ground process, or a machined cover body, and the cross-section of the cover body is not limited to a plane or a complex shape. In order to obtain better dimensional accuracy, in addition to the circular tube being a standard profile specification, a ground process part in an upper and lower combination is preferably used.

[0038] The loading and pushing mechanism 3 includes a follower table 31, a push rod 32 and a driving assembly 33. The follower table 31 and the driving assembly 33 are arranged on the frame 1, and the push rod 32 is installed at the output end of the driving assembly 33. The central axis of the push rod 32 coincides with the central axis of the workpiece and the pipeline 2. The driving assembly 33 starts to drive the push rod 32 to move toward one end of the pipeline 2, so that the workpiece located on the follower table 31 is pushed into the pipeline 2 via the push rod 32.

[0039] See also Figure 3 , the follower table 31 is provided with a guide groove 311, the width of which is slightly larger than the diameter of the workpiece, and is used to accommodate a single workpiece, so that the workpieces are arranged in sequence along the length direction. The push rod 32 is located in the guide groove 311, one end of the pipeline 2 contacts one side of the follower table 31, and the central axis of the pipeline 2 coincides with the central axis of the guide groove 311 and the workpiece. The new workpiece is placed in the guide groove 311, and the driving component 33 drives the push rod 32 to move toward the pipeline 2. The push rod 32 pushes the workpiece along the guide groove 311 to accurately enter the pipeline 2, and the cycle continues. The workpieces entering the pipeline 2 are connected end to end, and under the action of the push rod 32, the rear material pushes the front material, so that the workpieces in the pipeline 2 move toward the heating mechanism 4. This feeding and pushing mechanism 3 has a small driving force, is lightweight and energy-saving, and at the same time, the density of the workpieces connected end to end in the pipeline 2 is high, and the heating mechanism 4 can centrally heat the workpieces in the pipeline 2, which is efficient and energy-saving.

[0040] In order to form a good condition for the workpiece to move without gullies, in this embodiment, the follower table 31 is slidably arranged on the table 11, and a vertical stopper 312 and an elastic member 313 are arranged on the side of the follower table 31 away from the pipe 2. The vertical stopper 312 is fixedly installed on the table 11, and one end of the elastic member 313 is in contact with the follower table 31, and the other end is connected to the vertical stopper 312. The pipe 2 will expand due to the heat after being heated by the heating mechanism 4, or the pipe 2 will shrink due to the temperature drop after the heating is completed, and the length of the pipe 2 will change accordingly. After thermal expansion, one end of the pipe 2 in contact with the follower table 31 presses against the follower table 31, so that the follower table 31 slides relative to the table 11, and the compression elastic member 313 moves toward the vertical stop 312, so as to prevent the pipe 2 from being subjected to large radial buckling and bending due to the inability to freely stretch after thermal expansion; after the temperature decreases and shrinks, the follower table 31 slides toward the relative table 11 under the rebound force of the elastic member 313, so as to move toward the direction of the pipe 2, so that the follower table 31 is always in contact with the end of the pipe 2, so as to ensure that the workpiece accurately enters the pipe 2 along the guide groove 311 under the action of the push rod 32. Specifically, the end surface of the table 11 facing the follower table 31 is provided with a slide rail matching the follower table 31, and the follower table 31 obtains the relative sliding function along the axial direction of the pipe 2 and relative to the table 11 through the slide rail.

[0041] The driving assembly 33 includes a servo slide 331 and a push plate 332. The servo slide 331 moves toward or away from the end of the pipe 2. The push plate 332 is arranged on the servo slide 331 and moves synchronously. One end of the push plate 332 is fixedly connected to the end of the push rod 32 away from the workpiece. The servo slide 331 drives the push plate 332 and thus drives the push rod 32 to push the workpiece into the pipe 2. The workpiece is placed in the guide groove 311 on the follower table 31 manually or automatically. The servo slide 331 is started to drive the push plate 332 to move synchronously. The push plate 332 drives the push rod 32 to approach the end of the pipe 2 so that the push rod 32 contacts the workpiece and pushes the workpiece into the pipe 2. After completing one push, the servo slide 331 drives the push plate 332 and the push rod 32 away from the end of the pipe 2, and a new workpiece is placed in the guide groove 311. In this cycle, the workpieces are connected end to end to push the previous workpiece to realize automatic feeding.

[0042] The feeding and pushing mechanism 3 further includes a connecting plate 34 and a protection assembly 35, wherein the protection assembly 35 is mounted on the connecting plate 34, and the connecting plate 34 is arranged on the servo slide 331. The protection assembly 35 includes a guide column 351, a vertical plate 352, a connecting plate 353, a spring 354 and a pressure sensor 355, wherein one end of the guide column 351 is fixed to the push plate 332, and the other end is fixed to the connecting plate 353, the vertical plate 352 is located between the push plate 332 and the connecting plate 353 and is slidably arranged on the guide column 351, one end of the spring 354 is connected to the pressure sensor 355, and the other end of the spring 354 is connected to the connecting plate 353 to buffer the excessive movement of the push rod 32, and the pressure sensor 355 is fixed to the vertical plate 352 to sense the thrust of the push rod 32 on the workpiece. Taking into account the difference in the length of the pipeline 2 caused by the thermal accumulation error of the heating component and the original dimensional tolerance, when the push rod 32 pushes the workpiece forward, the deformation stroke of the spring 354 has the effect of adjusting the movement stroke of the push rod 32, limiting the thrust of the servo slide 331 on the workpiece, and playing a protective role in preventing overload from damaging the weak pipeline 2; at the same time, the pushing force can be known through the feedback of the pressure sensor 355, and the sensing push-in signal and the maximum allowable pushing force are set accordingly, so as to detect abnormal jamming problems during the pushing process.

[0043] See also Figure 1 and Figure 2The heating mechanism 4 is located on one side of the feeding and pushing mechanism 3, and is used to heat the workpiece in the pipeline 2 so that the workpiece in the pipeline 2 reaches the required process temperature. The heating mechanism 4 includes an induction heating component 41 and a resistance heating component 42. The induction heating component 41 and the resistance heating component 42 are arranged along the length direction of the pipeline 2. The workpiece is transported to the pipeline 2 via the feeding and pushing mechanism 3. The workpiece in the pipeline 2 passes through the induction heating component 41 in turn for preliminary induction heating, and then moves to the resistance heating component 42 for resistance heating again to reach the required process temperature. Taking advantage of the rapid heating of induction heating, the moving workpiece is heated to the preliminary heating temperature in a very short time under the action of the induction heating component 41, saving heating time; then the resistance heating component 42 heats the workpiece after preliminary heating again, and uses resistance heating to make the workpiece evenly heated, thereby improving the heating stability of the overall workpiece; the combination of the induction heating component 41 and the resistance heating component 42 combines the advantages of rapid induction heating and stable resistance heating, so that the heating time for the workpiece to reach the process requirements is short, and the heating efficiency is improved.

[0044] See also Figure 2 and 3 The induction heating assembly 41 includes an induction heating coil 411 and an infrared thermometer 412. The induction heating coil 411 is arranged around the outer periphery of the pipeline 2. The infrared thermometer 412 is arranged toward the pipeline 2 and detects the temperature of the workpiece inside through the pipeline 2. The infrared thermometer 412 is electrically connected to the induction heating coil 411 and is used to control the start and stop of the heating of the induction heating coil 411. The workpiece in the pipeline 2 is heated by the induction heating coil 411, and the current frequency and amplitude of the induction heating coil 411 are adjusted to control the heating temperature to meet the temperature requirements of different processes. The infrared thermometer 412 detects the temperature of the workpiece through the pipeline 2, and the start and stop of the induction heating coil 411 are controlled through the feedback of the infrared thermometer 412 to achieve temperature control.

[0045] In this embodiment, two groups of induction heating coils 411 and infrared thermometers 412 are provided, which are respectively provided in correspondence with two pipes 2 for heating the workpieces in the pipes 2 and measuring the temperature of the workpieces in the corresponding pipes 2. A partition plate is provided between the two pipes 2 to prevent interference between the two groups of infrared thermometers 412.

[0046] A fixing block 314 is provided at one end of the follower table 31 close to the pipe 2. The fixing block 314 is provided with a countersunk hole for the end of the pipe 2 to pass through. The end of the pipe 2 is positioned in the countersunk hole on the fixing block 314. The guide groove 311 on the follower table 31, the countersunk hole on the fixing block 314 and the inner hole of the pipe 2 form a coaxial relationship. The fixing block 314 is nested in the guide groove 311 on the follower table 31. The fixing block 314 is made of non-metallic material, preferably ceramic material. The countersunk hole is smaller than the inner hole diameter of the pipe 2, which not only avoids being heated by the magnetic field of the induction heating coil 411, but also prevents abnormal size workpieces from forcibly entering and damaging the weak pipe 2.

[0047] See also Figure 2 The resistance heating assembly 42 includes a furnace body 421, a plurality of resistance heating elements 422 and a plurality of thermocouples 423. One end of the pipeline 2 passes through the furnace body 421 and is arranged in the furnace body 421. The plurality of resistance heating elements 422 are arranged in double layers up and down and are all fixedly installed in the furnace body 421 to heat the workpiece in the pipeline 2 in the furnace body 421. The plurality of thermocouples 423 are all installed in the furnace body 421. One end of the thermocouple 423 is inserted into the furnace body 421 to monitor the temperature in the furnace body 421. Specifically, the plurality of resistance heating elements 422 are arranged in zones in the furnace body 421. Each thermocouple 423 corresponds to a zone of resistance heating elements 422 and is electrically connected to the resistance heating elements 422 in the zone. The resistance heating assembly 42 heats the workpiece in the pipeline 2 of the furnace body 421 through the resistance heating elements 422. The plurality of thermocouples 423 jointly monitor the temperature of each zone in the furnace body 421 to start and stop the corresponding resistance heating elements 422 to achieve temperature control. The workpiece that has been initially inductively heated is heated again by the resistance heating element 422. A plurality of groups of thermocouples 423 monitor the temperature in each zone in the furnace. The resistance heating elements 422 corresponding to each zone are started and stopped according to the temperature in the furnace body 421 to adjust the temperature. The zones are combined with each other to realize active heating supplement and temperature control, so that the heating effect of the induction heating component 41 is more uniform and stable.

[0048] The furnace body 421 is welded from steel materials, and the inner wall of the furnace body 421 is provided with a refractory insulation layer 4216, which is made of refractory bricks, or can be formed by casting with a mold and then sintering. The setting of the refractory insulation layer 4216 can effectively resist high temperature and isolate the temperature difference between the inside and outside of the furnace body 421, reduce heat transfer, improve energy utilization efficiency, reduce energy consumption, and save energy.

[0049] See also Figures 2 to 4The furnace body 421 is provided with a feeding port 4212 and a discharging port 4211. The feeding port 4212 is arranged at the end face of the furnace body 421 close to the feeding and pushing mechanism 3, and the discharging port 4211 is arranged at the end face far away from the feeding and pushing mechanism 3. One end of the pipeline 2 passes through the feeding port to enter the furnace body 421 and is located inside the furnace body 421. An entrance sealing plate 4215 for blocking the material passing port 4212 is provided at the material passing port 4212, and a furnace door 4213 and a door-driving electric cylinder 4214 are provided at the material discharging port 4211. The door-driving electric cylinder 4214 is fixedly installed on the furnace body 421, and the furnace door 4213 and the furnace body 421 slide in cooperation. The door-driving electric cylinder 4214 drives the furnace door 4213 to block or avoid the material discharging port 4211. A slide rail matching the furnace door 4213 is provided on the end surface of the furnace body 421 facing the furnace door 4213. The slide rail is vertically arranged, and the furnace door 4213 obtains a relative sliding function along the length direction of the slide rail and relative to the furnace body 421 under the driving action of the door-driving electric cylinder 4214 through the slide rail. Driven by the door-driving electric cylinder 4214, the furnace door 4213 can realize different degrees of closing regulation according to the changes in the temperature in the furnace, taking into account both energy saving and over-temperature prevention program control to obtain better temperature control characteristics. On the other hand, it is convenient for the external material taking mechanism to take the workpiece after heating in the furnace body 421.

[0050] See also Figure 2 and Figure 5 A positioning plate 43 is provided in the furnace body 421, and one end of the pipe 2 away from the feeding and pushing mechanism 3 is installed on the positioning plate 43. The positioning plate 43 is provided with a mounting groove 432 for enhancing the installation stability of the pipe 2 and a receiving groove 431 for receiving the heated workpiece. The mounting groove 432 is connected to the receiving groove 431, and the central axis of the receiving groove 431 coincides with the central axis of the pipe 2 and the mounting groove 432. The end of the pipe 2 close to the feeding and pushing mechanism 3 lightly touches the bottom of the countersunk hole of the fixing block 314, and the end of the pipe 2 located in the furnace body 421 is installed in the mounting groove 432 and lightly touches the bottom of the mounting groove 432 of the positioning plate 43.

[0051] See also Figure 5 and Figure 6A material taking area 4311 is provided in the middle of the receiving trough 431. The material taking area 4311 is used to make the workpiece in the receiving trough 431 easy to clamp when inserting the tool. The workpiece heated from the pipe 2 is pushed by the rear material, comes out from the end of the pipe 2 and is received by the receiving trough 431. The external material taking mechanism enters the furnace body 421 from the discharge port 4211, and takes away the workpiece after heating in the material taking area 4311. Furthermore, the receiving trough 431 is provided with a chip removal countersunk hole 4312 for connecting the chip extraction pipe. The chip removal countersunk hole 4312 is located on the side wall of the receiving trough 431 opposite to the end of the pipe 2. The chip removal countersunk hole 4312 is used to absorb the waste chips in the receiving trough 431. The oxide scale and demoulding powder shed on the workpiece are cleaned by the external equipment through the chip extraction pipe through the chip removal countersunk hole 4312 to prevent the oxide scale and demoulding powder from affecting the axial positioning accuracy of the workpiece. The device has a high degree of intelligence and achieves the effect of automatic slag removal at the outlet.

[0052] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic heating device, characterized in that: include: Rack (1); A pipe (2) is arranged on the frame (1) and is used to accommodate a workpiece; A material loading and pushing mechanism (3), arranged on the frame (1) and located at one end of the pipeline (2), is used to transport the workpiece into the pipeline (2) and to enable the workpiece to move forward in the pipeline (2); A heating mechanism (4) is arranged on the frame (1) and located on one side of the feeding and pushing mechanism (3), the heating mechanism (4) comprising an induction heating component (41) and a resistance heating component (42), the induction heating component (41) and the resistance heating component (42) being arranged along the length direction of the pipeline (2) to heat the workpiece in the pipeline (2); The workpiece is transported into the pipeline (2) via the loading and pushing mechanism (3). The workpiece in the pipeline (2) is sequentially passed through the induction heating component (41) for preliminary induction heating and then passed through the resistance heating component (42) for further resistance heating to reach the required process temperature.

2. An automatic heating device according to claim 1, characterized in that: The induction heating component (41) comprises an induction heating coil (411) and an infrared thermometer (412); the induction heating coil (411) is arranged around the periphery of the pipeline (2); the infrared thermometer (412) is arranged toward the pipeline (2) and detects the temperature of a workpiece inside the pipeline (2); the infrared thermometer (412) is electrically connected to the induction heating coil (411) for controlling the start and stop of heating of the induction heating coil (411).

3. An automatic heating device according to claim 1, characterized in that: The resistance heating assembly (42) comprises a furnace body (421) and a plurality of resistance heating elements (422); one end of the pipeline (2) passes through the furnace body (421) and is arranged inside the furnace body (421); and the plurality of resistance heating elements (422) are installed inside the furnace body (421) to heat a workpiece inside the pipeline (2) inside the furnace body (421).

4. An automatic heating device according to claim 3, characterized in that: The plurality of resistance heating elements (422) are arranged in zones within the furnace body (421), and the resistance heating assembly (42) further comprises a plurality of groups of thermocouples (423), wherein the plurality of groups of thermocouples (423) are installed on the furnace body (421), each group of thermocouples (423) corresponds to a zone of the resistance heating element (422) and is electrically connected to the resistance heating element (422), and one end of the thermocouple (423) is inserted into the furnace body (421) for monitoring the temperature of each zone within the furnace body (421) so as to start and stop the corresponding resistance heating element (422) to achieve temperature control.

5. An automatic heating device according to claim 3, characterized in that: A discharge port (4211) is provided at one end of the furnace body (421) away from the loading and pushing mechanism (3); a furnace door (4213) and a door-driving electric cylinder (4214) are provided at the discharge port (4211); the furnace door (4213) and the furnace body (421) are slidably matched; the door-driving electric cylinder (4214) drives the furnace door (4213) to cover or avoid the discharge port (4211).

6. An automatic heating device according to claim 1, characterized in that: The material loading and pushing mechanism (3) comprises a follower table (31), a push rod (32) and a driving assembly (33); the follower table (31) and the driving assembly (33) are arranged on the frame (1); the push rod (32) is installed at the output end of the driving assembly (33); the follower table (31) is provided with a guide groove (311) with a width for accommodating a single workpiece; the push rod (32) is located in the guide groove (311); one end of the pipeline (2) contacts the follower table (31); the central axis of the pipeline (2) coincides with the central axis of the guide groove (311) and the workpiece; the driving assembly (33) drives the push rod (32) to push the workpiece along the guide groove (311) into the pipeline (2), so that the workpieces in the pipeline (2) are connected end to end and pressed against each other to move forward.

7. An automatic heating device according to claim 6, characterized in that: The driving assembly (33) includes a servo slide (331) and a push plate (332), wherein the servo slide (331) moves toward or away from the end of the pipe (2), and the push plate (332) is arranged on the servo slide (331) and moves synchronously, and one end of the push plate (332) is fixedly connected to an end of the push rod (32) away from the workpiece, and the servo slide (331) drives the push plate (332) and thereby drives the push rod (32) to push the workpiece into the pipe (2).

8. An automatic heating device according to claim 7, characterized in that: The feeding and pushing mechanism (3) further comprises a connecting plate (34) and a protection assembly (35), wherein the protection assembly (35) is mounted on the connecting plate (34), and the connecting plate (34) is arranged on the servo slide (331); the protection assembly (35) comprises a guide column (351), a vertical plate (352), a connecting plate (353), a spring (354) and a pressure sensor (355), wherein one end of the guide column (351) is fixed to the pushing plate (332), and the other end is fixed to the connecting plate (353) is fixed, the vertical plate (352) is located between the push plate (332) and the connecting plate (353) and is slidably arranged on the guide column (351), one end of the spring (354) is connected to the pressure sensor (355), and the other end of the spring (354) is connected to the connecting plate (353) to buffer the excessive movement of the push rod (32), and the pressure sensor (355) is fixed to the vertical plate (352) to sense the thrust of the push rod (32) on the workpiece.

9. An automatic heating device according to claim 3, characterized in that: A positioning plate (43) is arranged in the furnace body (421); one end of the pipeline (2) away from the loading and pushing mechanism (3) is arranged on the positioning plate (43); the positioning plate (43) is provided with a material receiving groove (431); the central axis of the material receiving groove (431) coincides with the central axis of the pipeline (2); the material receiving groove (431) is provided with a material taking area (4311); the material taking area (4311) is used to facilitate the clamping of a workpiece in the material receiving groove (431) when inserting a tool.

10. An automatic heating device according to claim 9, characterized in that: The material receiving trough (431) is provided with a chip removal countersunk hole (4312) for connecting to the chip extraction pipe. The chip removal countersunk hole (4312) is located on the side wall of the material receiving trough (431) opposite to the port of the pipeline (2). The chip removal countersunk hole (4312) is used to absorb waste chips in the material receiving trough (431).

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