Heating device and heating monitoring method

Abstract

The application discloses a heating device and a heating monitoring method. The heating device comprises a feeding assembly, a heating assembly, a detection member and a control assembly. The feeding assembly is used for supplying workpieces provided with identification codes. An image capturing member is used for capturing the identification codes of each workpiece and obtaining information of each workpiece. The heating assembly comprises a plurality of connected heating furnaces, the heating temperature of each heating furnace gradually increases, each workpiece sequentially passes through the plurality of heating furnaces for heating, and a temperature measuring sensor is arranged in each heating furnace and used for measuring the surface temperature of the workpiece in each heating furnace. The detection member is used for detecting the center temperature of the end face of the workpiece pushed out from the frontmost heating furnace. The control assembly is used for obtaining the surface temperature of the workpiece in each heating furnace and obtaining the gradient heating data and the center temperature of each workpiece, and the control assembly judges whether the workpiece meets the heating requirement according to the gradient heating data and the center temperature. The heating device can accurately judge the preheating effect of the workpiece and improves the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hot forming processing, in particular to a heating device and a heating monitoring method. BACKGROUND

[0002] In the profile production process, the workpiece needs to be preheated before entering the extruder. In order to ensure the quality of extrusion, the heating temperature of each heating area is monitored in the production, but the gradient heating condition of each workpiece cannot be monitored, the preheating effect of the workpiece cannot be accurately determined, the extrusion forming is affected, and the workpiece needs to be reheated, which affects the production efficiency. SUMMARY

[0003] Therefore, it is necessary to provide a heating device and a heating monitoring method, which can accurately determine the preheating effect of the workpiece and improve the production efficiency.

[0004] The embodiment of the present application provides a heating device for heating a workpiece, which comprises a feeding assembly, a heating assembly, a detection member and a control assembly. The feeding assembly is used for supplying the workpiece, and each workpiece is provided with an identification code. An image capturing member is connected to the feeding assembly, which is used for capturing the identification code of each workpiece and obtaining the information of each workpiece. The heating assembly comprises a plurality of connected heating furnaces, and the heating temperature of each heating furnace gradually increases along the arrangement direction of the heating furnaces. Each workpiece is sequentially heated through the plurality of heating furnaces, and a temperature measuring sensor is arranged in each heating furnace for measuring the surface temperature of the workpiece in each heating furnace. The detection member is arranged on one side of the heating furnace at the most front end, which is used for detecting the center temperature of the end face of the workpiece pushed out from the heating furnace at the most front end. The control assembly is used for obtaining the surface temperature of the workpiece in each heating furnace and obtaining the gradient heating data of each workpiece. The control assembly is also used for obtaining the center temperature, and the control assembly judges whether the workpiece meets the heating requirement according to the gradient heating data and the center temperature. When the gradient heating data and the center temperature both meet the predetermined range, the workpiece meets the heating requirement.

[0005] The embodiment of the present application includes the technical effect that the heating device measures the surface temperature of the workpiece in each heating furnace through the temperature measuring sensor, obtains the gradient heating data of each workpiece, detects the center temperature of the end face of the workpiece pushed out from the heating furnace at the most front end through the detection member, judges whether the workpiece meets the heating requirement according to the gradient heating data and the center temperature, and when the gradient heating data and the center temperature both meet the predetermined range, the workpiece meets the heating requirement. The preheating effect of the workpiece can be accurately determined, the situation that the preheating does not meet the requirement and then the extrusion processing is continued to cause the extrusion difficulty is avoided, and the production efficiency is improved.

[0006] Optionally, in some embodiments of the present application, the feeding assembly is further configured to push the workpieces into the heating furnaces, move the workpieces in the heating furnaces by a length of the workpieces, and push the workpiece at the front end out of the heating furnace. The control assembly determines the heating furnace in which each workpiece is located after being moved according to the length of the workpiece, and determines the surface temperature of each workpiece after being moved by the temperature sensor.

[0007] Optionally, in some embodiments of the present application, the information of each workpiece obtained by the image capturing member includes the length of each workpiece.

[0008] Optionally, in some embodiments of the present application, when the surface temperature of the workpiece in the heating furnace at the front end is maintained within a predetermined temperature range within a predetermined time, the control assembly controls the feeding assembly to feed and push the workpiece in the heating furnace at the front end out.

[0009] Optionally, in some embodiments of the present application, a preheating channel is further provided between the feeding assembly and the heating furnace at the rear end. The preheating channel is connected to the heating furnace at the rear end. The feeding assembly pushes the workpiece into the preheating channel in advance, and the workpiece is preheated by the heat flowing into the preheating channel from the heating furnace.

[0010] Optionally, in some embodiments of the present application, the feeding assembly includes a storage rack, a pushing member, and a feeding member. The storage rack is configured to stack the workpieces. The feeding member is connected to the storage rack and configured to move the workpieces in the storage rack to the pushing member. The pushing member is configured to push the workpieces into the preheating channel.

[0011] Optionally, in some embodiments of the present application, the heating furnace at the front end is provided with a position sensor. The detecting member moves to the end surface of the workpiece according to the position sensor to detect the center temperature of the end surface.

[0012] An embodiment of the present application further provides a heating monitoring method of the heating device of any of the above-mentioned embodiments, which includes the following steps:

[0013] identifying the identification code on the first workpiece, and pushing the first workpiece into the heating furnace. The temperature sensor in the heating furnace measures the surface temperature of the first workpiece.

[0014] identifying the identification code on the second workpiece, pushing the second workpiece into the heating furnace, moving the first workpiece to an adjacent heating furnace by the second workpiece, measuring the surface temperature of the second workpiece by the temperature sensor in the heating furnace, and measuring the surface temperature of the first workpiece by the temperature sensor in the adjacent heating furnace.

[0015] identifying the identification code of the Nth workpiece, pushing the Nth workpiece into the heating furnace, making the Nth workpiece push the N-1th workpiece to move to another heating furnace adjacent to the Nth workpiece, and making the second workpiece push the first workpiece out of the heating furnace located at the front end, and measuring the surface temperature of the second workpiece by the temperature sensor located in the heating furnace at the front end;

[0016] detecting the center temperature of the end face of the pushed-out first workpiece;

[0017] obtaining the surface temperature of the first workpiece in each heating furnace and the heating gradient data of the pushed-out first workpiece, and obtaining the center temperature of the end face of the pushed-out first workpiece;

[0018] When the gradient heating data and the center temperature of the first workpiece both satisfy the predetermined range, the first workpiece meets the heating requirement, and when any one of the gradient heating data and the center temperature of the first workpiece does not satisfy the predetermined range, the first workpiece does not meet the heating requirement and an alarm prompt is issued.

[0019] Optionally, in some embodiments of the present application, before the step of detecting the center temperature of the end face of the pushed-out first workpiece, there is further a step of monitoring the surface temperature of the workpiece in the heating furnace located at the front end, and when the surface temperature of the workpiece remains within the predetermined temperature range for a predetermined time, the feeding assembly feeds, and the workpiece in the heating furnace located at the front end is pushed out.

[0020] Optionally, in some embodiments of the present application, before the workpiece is pushed into the heating furnace at the rear end, there is further a step of pushing the workpiece into a preheating channel, preheating the workpiece by the heat flowing into the preheating channel from the heating furnace, and pushing the workpiece into the heating furnace at the rear end after preheating. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Fig. 1 shows a structural schematic diagram of a heating device in an embodiment.

[0022] Figure 2 Fig. 2 shows a structural schematic diagram of a workpiece in an embodiment.

[0023] Figure 3 Fig. 3 shows a flowchart of a heating monitoring method in an embodiment.

[0024] MAIN ELEMENT SYMBOL EXPLANATION

[0025] heating device 100

[0026] feeding assembly 10

[0027] storage rack 11

[0028] pushing member 12

[0029] loading member 13

[0030] image-taking member 20

[0031] heating assembly 30

[0032] heating furnace 31

[0033] first heating furnace 311

[0034] second heating furnace 312

[0035] third heating furnace 313

[0036] fourth heating furnace 314

[0037] fifth heating furnace 315

[0038] detecting member 40

[0039] preheating channel 50

[0040] workpiece 200

[0041] surface 201

[0042] end surface 202

[0043] center 202a

[0044] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0046] It should be noted that when a component is referred to as "mounted on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "disposed on" another component, it can be directly disposed on the other component or there can be a middle component.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0048] Embodiments of the present application provide a heating device for heating workpieces, comprising a feeding assembly, a heating assembly, a detecting member and a control assembly. The feeding assembly is configured to supply workpieces, each of which is provided with an identification code. An image capturing member is connected to the feeding assembly and configured to capture the identification code of each workpiece and obtain information of each workpiece. The heating assembly comprises a plurality of connected heating furnaces, the heating temperature of each heating furnace gradually increases along the arrangement direction of the heating furnaces, each workpiece sequentially passes through the plurality of heating furnaces for heating, and each heating furnace is provided with a temperature measuring sensor for measuring the surface temperature of the workpiece in each heating furnace. The detecting member is arranged on one side of the heating furnace at the most front end and is configured to detect the center temperature of the end face of the workpiece pushed out from the heating furnace at the most front end. The control assembly is configured to obtain the surface temperature of the workpiece in each heating furnace and obtain gradient heating data of each workpiece, and is further configured to obtain the center temperature. The control assembly determines whether the workpiece meets the heating requirement according to the gradient heating data and the center temperature. When the gradient heating data and the center temperature both satisfy a predetermined range, the workpiece meets the heating requirement. The above heating device measures the surface temperature of the workpiece in each heating furnace by the temperature measuring sensor, obtains the gradient heating data of each workpiece, detects the center temperature of the end face of the workpiece pushed out from the heating furnace at the most front end by the detecting member, determines whether the workpiece meets the heating requirement according to the gradient heating data and the center temperature, and when the gradient heating data and the center temperature both satisfy the predetermined range, the workpiece meets the heating requirement. The preheating effect of the workpiece can be accurately determined, the situation that the workpiece is continuously extruded for processing due to the preheating not meeting the requirement and the extrusion is difficult is avoided, and the production efficiency is improved.

[0049] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0050] Please refer to Figure 1 and Figure 2The heating device 100 is used for gradient heating the workpiece 200. The heating device 100 comprises a feeding assembly 10, an image capturing member 20, a heating assembly 30, a detecting member 40 and a control assembly (not shown in the figure). The feeding assembly 10 is used for continuously supplying the workpiece 200, and each workpiece 200 is provided with an identification code. The image capturing member 20 is connected to the feeding assembly 10 and used for capturing the identification code of each workpiece 200 and obtaining the corresponding information of each workpiece 200. The heating assembly 30 comprises a plurality of connected heating furnaces 31, and the heating temperature of each heating furnace 31 is gradually increased along the arrangement direction of the heating furnaces 31, i.e. the heating temperature of each workpiece 200 is gradually increased from low to high. The plurality of heating furnaces 31 are used for gradient heating each workpiece 200, and each heating furnace 31 is provided with a temperature measuring sensor for measuring the surface temperature of each workpiece 200. The detecting member 40 is arranged on one side of the heating assembly 30 and used for detecting the center temperature of the end face of the workpiece 200 after the gradient heating is completed and the workpiece 200 is pushed out of the heating assembly 30. The detecting member is electrically connected to the feeding assembly 10, the image capturing member 20, the heating assembly 30 and the detecting member 40, and used for obtaining the gradient heating data of each workpiece 200 and the center temperature of each workpiece 200 corresponding to the gradient heating data. The control assembly is used for judging whether the workpiece 200 meets the heating requirement according to the gradient heating data and the center temperature. When the gradient heating data and the center temperature both meet the predetermined range, the workpiece 200 meets the heating requirement. When any one of the gradient heating data and the center temperature meets the predetermined range, the workpiece 200 does not meet the heating requirement and needs to be heated again. Optionally, the workpiece 200 comprises a surface 201 and an end face 202, the temperature measuring sensor is used for measuring the temperature of the surface 201, and the detecting member 40 is used for measuring the center temperature of the end face 202. Optionally, the workpiece 200 comprises an aluminum bar. Optionally, the workpiece 200 further comprises other metal profiles. Optionally, the identification code is arranged on the end face 202 of the workpiece 200.

[0051] In an embodiment, the feeding assembly 10 comprises a storage rack 11, a pushing member 12 and a feeding member 13. The storage rack 11 is configured to accommodate workpieces 200, and a plurality of workpieces 200 are stacked in the storage rack 11. The feeding member 13 is configured to move the workpieces 200 in the storage rack 11 to the position of the pushing member 12. The pushing member 12 is configured to push the workpieces 200 into the last-end heating furnace 31. Each time the pushing member 12 pushes a workpiece 200 into the last-end heating furnace 31, the pushed workpiece 200 in turn pushes the workpiece 200 in front of it, thereby moving the positions of all the workpieces 200 in the heating furnace 31, moving the workpieces 200 into different temperature heating furnaces 31, and pushing the workpiece 200 in the front-end heating furnace 31 out. In the present application, the last-end heating furnace 31 is the heating furnace 31 closest to the pushing member 12, and the unheated workpiece 200 enters from the last-end heating furnace 31. The front-end heating furnace 31 is the heating furnace 31 farthest from the pushing member 12, and the heated workpiece 200 is pushed out from the front-end heating furnace 31, i.e., the last-end and the front-end are the head-end and the tail-end of the plurality of heating furnaces 31.

[0052] In an embodiment, the heating device 100 further comprises a preheating channel 50, which is arranged between the feeding assembly 10 and the heating assembly 30. Further, the preheating channel 50 is arranged between the feeding assembly 10 and the last-end heating furnace 31. The preheating channel 50 is connected to the plurality of heating furnaces 31, and the heat of the heating furnaces 31 can be transferred to the preheating channel 50. Before the workpiece 200 is pushed into the last-end heating furnace 31, the pushing member 12 pushes the workpiece 200 into the preheating channel 50 for preheating. Through preheating, the workpiece 200 can be preheated, which improves the efficiency of subsequent heating and is beneficial to improving the overall production efficiency. Optionally, the preheating channel 50 can accommodate a plurality of workpieces.

[0053] In an embodiment, the imaging member 20 is configured to capture the identification code of the workpiece 200 and obtain the information of the workpiece 200 before the workpiece 200 is pushed into the preheating passage 50 or the heating furnace 31 at the last end. Optionally, the information of the workpiece 200 includes the length of the workpiece 200 and the number of the workpiece 200. The control assembly is configured to obtain the length and the number of each workpiece 200. The control assembly is configured to derive the moving distance of each workpiece 200 in the plurality of heating furnaces 31 according to the length of the workpiece 200 pushed into the heating furnace 31 at the last end, derive the heating furnace 31 corresponding to each workpiece 200 after the workpiece 200 moves a length of the workpiece 200, and further derive the surface temperature of each workpiece 200 in the corresponding heating furnace 31 through the temperature sensing device in the corresponding heating furnace 31. Each time the workpiece 200 is pushed into the heating furnace 31 at the last end, the workpiece 200 in the plurality of heating furnaces 31 is correspondingly moved a length of the workpiece 200, and each workpiece 200 is subjected to gradient heating through the plurality of heating furnaces 31 and obtains the surface temperature of each workpiece 200 in each heating furnace 31. The control assembly is configured to derive the heating gradient data of each workpiece 200 based on the surface temperature of each workpiece 200 in each heating furnace 31. Optionally, the heating gradient data includes the surface temperature of the workpiece 200 in each heating furnace 31 and the temperature difference of the surface temperature of the workpiece 200 in different heating furnaces 31. Further, the temperature difference includes the temperature difference of the surface temperature of the workpiece 200 in adjacent heating furnaces 31. Optionally, the temperature difference is adjusted according to different materials and different diameters of the workpiece 200.

[0054] In an embodiment, the plurality of heating furnaces 31 of the present application are provided with five, each of which has a different heating temperature. The plurality of heating furnaces 31 includes a first heating furnace 311, a second heating furnace 312, a third heating furnace 313, a fourth heating furnace 314 and a fifth heating furnace 315 arranged in sequence. The first heating furnace 311 is the last heating furnace, and the fifth heating furnace 315 is the first heating furnace. Each of the first heating furnace 311, the second heating furnace 312, the third heating furnace 313, the fourth heating furnace 314 and the fifth heating furnace 315 is provided with a temperature measuring sensor, which measures the surface temperature of the workpiece 200 in each heating furnace in real time. Optionally, the temperature measuring sensor is a contact temperature measuring sensor, which measures the surface temperature of the workpiece 200 by contacting the surface of the workpiece 200, thereby improving the accuracy of detecting the surface temperature of the workpiece 200. The heating temperatures of the first heating furnace 311, the second heating furnace 312, the third heating furnace 313, the fourth heating furnace 314 and the fifth heating furnace 315 are arranged from low to high. For example, the highest heating temperature of the first heating furnace 311 is set to 300°C, the highest heating temperature of the second heating furnace 312 is set to 400°C, the highest heating temperature of the third heating furnace 313 is set to 445°C, the highest heating temperature of the fourth heating furnace 314 is set to 470°C, and the highest heating temperature of the fifth heating furnace 315 is set to 495°C. When the temperature in the heating furnace is lower than the set highest heating temperature, the heating furnace starts heating until the set highest heating temperature is reached. The highest heating temperatures of the first heating furnace 311, the second heating furnace 312, the third heating furnace 313, the fourth heating furnace 314 and the fifth heating furnace 315 are the standard temperatures that the surface of the workpiece 200 needs to reach in each heating furnace 31.

[0055] Optionally, the number of heating furnaces 31 is adjusted according to the workpiece 200 to be heated. When the number of heating furnaces 31 used by the workpiece 200 to be heated is small, some of the heating furnaces 31 can be turned off, or the heating temperature of some of the heating furnaces 31 can be adjusted to meet the temperature of the workpiece 200 to be heated.

[0056] In an embodiment, when the workpiece 200 is heated in each heating furnace, the difference between the surface temperature of the workpiece 200 and the standard temperature needs to be within a predetermined temperature range, and the workpiece 200 needs to maintain the difference between the surface temperature and the standard temperature within the predetermined temperature range within a predetermined time. In other embodiments, only the surface temperature of the workpiece in the first heating furnace 31 at the front end can be maintained within the predetermined temperature range within the predetermined time.

[0057] Optionally, when the surface temperature of the workpiece in the frontmost heating furnace 31 is kept within a predetermined temperature range for a predetermined time, the control assembly controls the pushing member 12 to push the workpiece in the frontmost heating furnace 31 out. For example, the difference between the surface temperature of the workpiece 200 and the standard temperature is ±5℃, and the predetermined time includes 4-6 minutes. The temperature range that the surface of the workpiece 200 needs to reach in the fifth heating furnace 315 is 490-500℃, and when the surface of the workpiece 200 is kept within the temperature range of 490-500℃ for 4-6 minutes, the workpiece 200 in the fifth heating furnace 315 is pushed out, and the next temperature measurement is performed by the detecting member 40. It can be understood that, according to workpieces 200 of different sizes and materials, the standard temperature, the difference between the surface temperature of the workpiece 200 and the standard temperature, and the time for which the temperature needs to be kept are all different.

[0058] In an embodiment, the frontmost heating furnace 31 is provided with a position sensor (not shown in the figure) on the side close to the detecting member 40. When the workpiece is pushed out, the position sensor senses the workpiece, the detecting member 40 moves towards the frontmost heating furnace 31 according to the sensing signal of the position sensor, and contacts the center 202a of the end surface 202 of the workpiece 200, thereby measuring the center temperature of the end surface 202. The center 202a of the end surface 202 is the position of the axis of the workpiece 200, and by measuring the center temperature of the end surface 202 of the workpiece 200, the heating condition of the workpiece can be accurately judged, which is convenient for the subsequent hot forming of the workpiece.

[0059] In an embodiment, the control assembly includes a controller for obtaining the gradient heating data of each workpiece 200 and the corresponding center temperature of each workpiece 200, and the controller judges whether the workpiece 200 meets the heating requirement according to the gradient heating data and the center temperature. When both the gradient heating data and the center temperature meet the predetermined range, the workpiece 200 meets the heating requirement, and when either the gradient heating data or the center temperature meets the predetermined range, the workpiece 200 does not meet the heating requirement, an alarm is issued, and the workpiece needs to be heated again. Optionally, the controller includes a combination of programmable logic controllers and various control chips.

[0060] Please refer to Figure 3 The application also provides a heating monitoring method using the above heating device 100, which includes the following steps:

[0061] Step S31: identifying the identification code on the first workpiece, and pushing the first workpiece into the heating furnace, and the temperature measuring sensor in the heating furnace measures the surface temperature of the first workpiece;

[0062] Specifically, taking the example of setting five heating furnaces 31, the imaging member 20 scans the identification code of the first workpiece and obtains the length and number of the first workpiece, and the pushing member 12 pushes the first workpiece into the first heating furnace 311 for heating. The temperature measuring sensor in the first heating furnace 311 measures the surface temperature T1 of the first workpiece.

[0063] Step S32: identifying the identification code of the second workpiece, pushing the second workpiece into the heating furnace, making the second workpiece push the first workpiece to move to the adjacent other heating furnace, and measuring the surface temperature of the second workpiece by the temperature measuring sensor in the heating furnace and the surface temperature of the first workpiece by the temperature measuring sensor in the adjacent other heating furnace.

[0064] Specifically, the imaging member 20 scans the identification code of the second workpiece and obtains the length and number of the second workpiece, and the pushing member 12 pushes the second workpiece into the first heating furnace 311 for heating. The second workpiece pushes the first workpiece to move to the second heating furnace 312 for heating. The temperature measuring sensor in the first heating furnace 311 measures the surface temperature of the second workpiece, and the temperature measuring sensor in the second heating furnace 312 measures the surface temperature T2 of the first workpiece.

[0065] Step S33: identifying the identification code of the Nth workpiece, pushing the Nth workpiece into the heating furnace, making the Nth workpiece push the N-1th workpiece to move to the adjacent other heating furnace, and making the second workpiece push the first workpiece out of the heating furnace located at the front end, and measuring the surface temperature of the second workpiece by the temperature measuring sensor in the heating furnace located at the front end.

[0066] Specifically, the imaging member 20 scans the identification code of the third workpiece and obtains the length and number of the third workpiece, and the pushing member 12 pushes the third workpiece into the first heating furnace 311 for heating. The third workpiece pushes the second workpiece to move to the second heating furnace 312 for heating. The second workpiece pushes the first workpiece to move to the third heating furnace 313 for heating. The temperature measuring sensor in the first heating furnace 311 measures the surface temperature of the third workpiece, the temperature measuring sensor in the second heating furnace 312 measures the surface temperature of the second workpiece, and the temperature measuring sensor in the third heating furnace 313 measures the surface temperature T3 of the first workpiece.

[0067] The imaging member 20 scans the identification code of the fourth workpiece and obtains the length and number of the fourth workpiece. The pushing member 12 pushes the fourth workpiece into the first heating furnace 311 for heating. The fourth workpiece pushes the third workpiece to move to the second heating furnace 312. The third workpiece pushes the second workpiece to move to the third heating furnace 313 for heating. The second workpiece pushes the first workpiece to move to the fourth heating furnace 314 for heating. The temperature measuring sensor in the first heating furnace 311 measures the surface temperature of the fourth workpiece. The temperature measuring sensor in the second heating furnace 312 measures the surface temperature of the third workpiece. The temperature measuring sensor in the third heating furnace 313 measures the surface temperature of the second workpiece. The temperature measuring sensor in the fourth heating furnace 314 measures the surface temperature T4 of the first workpiece.

[0068] The imaging member 20 scans the identification code of the fifth workpiece and obtains the length and number of the fifth workpiece. The pushing member 12 pushes the fifth workpiece into the first heating furnace 311 for heating. The fifth workpiece pushes the fourth workpiece to move to the second heating furnace 312. The fourth workpiece pushes the third workpiece to move to the third heating furnace 313 for heating. The third workpiece pushes the second workpiece to move to the fourth heating furnace 314 for heating. The second workpiece pushes the first workpiece to move to the fifth heating furnace 315 for heating. The temperature measuring sensor in the first heating furnace 311 measures the surface temperature of the fifth workpiece. The temperature measuring sensor in the second heating furnace 312 measures the surface temperature of the fourth workpiece. The temperature measuring sensor in the third heating furnace 313 measures the surface temperature of the third workpiece. The temperature measuring sensor in the fourth heating furnace 314 measures the surface temperature of the second workpiece. The temperature measuring sensor in the fifth heating furnace 315 measures the surface temperature T5 of the first workpiece.

[0069] Step S34: detecting the center temperature of the end face of the first workpiece pushed out;

[0070] Specifically, the imaging member 20 scans the identification code of the sixth workpiece and obtains the length and number of the sixth workpiece. The pushing member 12 pushes the sixth workpiece into the first heating furnace 311 for heating. The sixth workpiece pushes the fifth workpiece to move to the second heating furnace 312. The fifth workpiece pushes the fourth workpiece to move to the third heating furnace 313 for heating. The fourth workpiece pushes the third workpiece to move to the fourth heating furnace 314 for heating. The third workpiece pushes the second workpiece to move to the fifth heating furnace 315 for heating. The second workpiece pushes the first workpiece out of the fifth heating furnace 315. The position sensor senses the first workpiece. The detection member 40 moves in the direction of the frontmost heating furnace 31 according to the sensing signal of the position sensor and contacts the center of the end face of the first workpiece, thereby measuring the center temperature of the end face.

[0071] Step S35: obtaining the surface temperature of the first workpiece in each heating furnace and the heating gradient data of the first workpiece, and obtaining the center temperature of the end face of the first workpiece pushed out;

[0072] Specifically, the controller obtains the surface temperature T1 of the first workpiece in the first heating furnace 311, the surface temperature T2 of the first workpiece in the second heating furnace 312, the surface temperature T3 of the first workpiece in the third heating furnace 313, the surface temperature T4 of the first workpiece in the fourth heating furnace 314, and the surface temperature T5 of the first workpiece in the fifth heating furnace 315, and calculates the difference D1 between T1 and the standard temperature of the first heating furnace 311, the difference D2 between T2 and the standard temperature of the second heating furnace 312, the difference D3 between T3 and the standard temperature of the second heating furnace 312, the difference D4 between T4 and the standard temperature of the second heating furnace 312, and the difference D5 between T5 and the standard temperature of the second heating furnace 312, and calculates the temperature difference between adjacent temperatures among T1, T2, T3, T4 and T5, i.e. the temperature difference between T1 and T2, the temperature difference between T2 and T3, the temperature difference between T3 and T4, and the temperature difference between T4 and T5, to obtain the heating gradient data of the first workpiece. The controller also obtains the center temperature of the end face of the first workpiece measured by the detection member.

[0073] Step S36: when the gradient heating data and the center temperature of the first workpiece both satisfy the predetermined range, the first workpiece meets the heating requirement; when any one of the gradient heating data and the center temperature of the first workpiece does not satisfy the predetermined range, the first workpiece does not meet the heating requirement and an alarm prompt is issued to prohibit the extrusion operation.

[0074] The heating gradient data and the center temperature of the second workpiece, the third workpiece and the Nth workpiece are obtained in this way, and the N workpieces are heated and monitored.

[0075] In an embodiment, before step S34, the method further comprises the step of:

[0076] The surface temperature of the workpiece in the heating furnace at the front end is monitored, and when the surface temperature of the workpiece remains within the predetermined temperature range within a predetermined time, the feeding assembly feeds, and the workpiece in the heating furnace at the front end is pushed out. Specifically, the surface temperature of the first workpiece in the fifth heating furnace 315 is monitored, and when the surface temperature of the first workpiece remains within the predetermined temperature range within a predetermined time, the controller controls the pushing member 12 to push the sixth workpiece into the first heating furnace 311, and then push the first workpiece out of the fifth heating furnace 315, which can further improve the accuracy of the heating temperature of the workpiece.

[0077] In an embodiment, before pushing the workpiece into the heating furnace at the rear end, the method further comprises the step of:

[0078] The workpiece is pushed into the preheating channel, the heat flowing into the preheating channel through the heating furnace preheats the workpiece, and after preheating, the workpiece is pushed into the last end heating furnace. Specifically, the pushing member 12 pushes the first workpiece into the preheating channel 50 for preheating. Through preheating, the workpiece 200 can be preheated, and then pushed into the first heating furnace 311, which can improve the efficiency of subsequent heating and improve the overall production efficiency.

[0079] The heating device 100 and the heating monitoring method measure the surface temperature of the workpiece in each heating furnace through the temperature measuring sensor, obtain the gradient heating data of each workpiece, detect the center temperature of the end face of the workpiece pushed out from the frontmost heating furnace through the detection member, and judge whether the workpiece meets the heating requirement according to the gradient heating data and the center temperature. When the gradient heating data and the center temperature both meet the predetermined range, the workpiece meets the heating requirement, the preheating effect of the workpiece can be accurately judged, the situation that preheating does not meet the requirement and then continues to be extruded, resulting in difficult extrusion, is avoided, and the production efficiency is improved.

[0080] Those skilled in the art of the present technology should recognize that the above embodiments are only used to illustrate the present application, and are not used as a limitation on the present application. Any appropriate changes and variations made to the above embodiments within the spirit and principles of the present application fall within the scope of the present application.

Claims

1. A heating device for heating a workpiece, characterized by, The application relates to a heating device for workpieces, which comprises the following components: a feeding assembly for feeding the workpieces, each of which is provided with an identification code; an image capturing component connected to the feeding assembly, which is used for capturing the identification code of each workpiece and obtaining information of each workpiece; a heating assembly, which comprises a plurality of connected heating furnaces, the heating temperature of each heating furnace gradually increases along the arrangement direction of the heating furnaces, each workpiece sequentially passes through the plurality of heating furnaces for heating, and each heating furnace is provided with a temperature measuring sensor for measuring the surface temperature of the workpiece in each heating furnace; a detection component arranged on one side of the heating furnace at the front end, which is used for detecting the center temperature of the end face of the workpiece pushed out from the heating furnace at the front end; a control assembly, which is used for obtaining the surface temperature of the workpiece in each heating furnace and obtaining gradient heating data of each workpiece, the control assembly is also used for obtaining the center temperature, and the control assembly judges whether the workpiece meets the heating requirement according to the gradient heating data and the center temperature; when the gradient heating data and the center temperature both meet the predetermined range, the workpiece meets the heating requirement.

2. The heating device of claim 1, wherein The feeding assembly is also used for pushing the workpiece into the heating furnace, moving the workpieces in the plurality of heating furnaces by a length of the workpiece, and pushing the workpiece at the front end out of the heating furnace, the control assembly obtains the heating furnace where each workpiece is located after the workpiece is moved according to the length of the workpiece, and obtains the surface temperature of each workpiece after the workpiece is moved through the temperature measuring sensor.

3. The heating device of claim 2, wherein The information of each workpiece obtained by the image capturing component comprises the length of each workpiece.

4. The heating device of claim 1, wherein, When the surface temperature of the workpiece in the heating furnace at the front end is kept in a predetermined temperature range within a predetermined time, the control assembly controls the feeding assembly to feed the workpiece and push the workpiece in the heating furnace at the front end out.

5. The heating device of claim 1, wherein, The application further comprises a preheating channel, which is arranged between the feeding assembly and the heating furnace at the rear end, the preheating channel is connected to the heating furnace at the rear end, the feeding assembly pushes the workpiece into the preheating channel in advance, and the workpiece is preheated through the heat flowing into the preheating channel from the heating furnace.

6. The heating device of claim 5, wherein The feeding assembly comprises a storage rack, a pushing component and a feeding component, the storage rack is used for stacking the workpieces, the feeding component is connected to the storage rack and is used for moving the workpieces in the storage rack to the pushing component, and the pushing component is used for pushing the workpieces into the preheating channel.

7. The heating device of claim 1, wherein The heating furnace at the front end is provided with a position sensor, and the detection component moves to the end face of the workpiece according to the position sensor to detect the center temperature of the end face.

8. A heating monitoring method using the heating device according to any one of claims 1 to 7, characterized by, The application further comprises the following steps: identifying the identification code on the first workpiece and pushing the first workpiece into the heating furnace, and the temperature measuring sensor in the heating furnace measures the surface temperature of the first workpiece. identifying the identification code of the second workpiece, pushing the second workpiece into the heating furnace, moving the first workpiece to an adjacent another heating furnace by pushing the second workpiece, measuring the surface temperature of the second workpiece by the temperature measuring sensor in the heating furnace, and measuring the surface temperature of the first workpiece by the temperature measuring sensor in the adjacent another heating furnace; identifying the identification code of the Nth workpiece, pushing the Nth workpiece into the heating furnace, moving the N-1th workpiece to an adjacent another heating furnace by pushing the Nth workpiece, and moving the first workpiece out of the heating furnace at the front end by pushing the second workpiece, and measuring the surface temperature of the second workpiece by the temperature measuring sensor in the heating furnace at the front end; detecting the center temperature of the end face of the first workpiece pushed out; obtaining the surface temperature of the first workpiece in each heating furnace and obtaining the heating gradient data of the first workpiece, and obtaining the center temperature of the end face of the first workpiece pushed out; when the gradient heating data and the center temperature of the first workpiece both meet the predetermined range, the first workpiece meets the heating requirement, and when any one of the gradient heating data and the center temperature of the first workpiece does not meet the predetermined range, the first workpiece does not meet the heating requirement and an alarm prompt is issued.

9. The heating monitoring method of claim 8, wherein, Before the step of detecting the center temperature of the end face of the first workpiece pushed out, the method further comprises the step of: monitoring the surface temperature of the workpiece in the heating furnace at the front end, and feeding the workpiece in the heating furnace at the front end by the feeding assembly when the surface temperature of the workpiece is kept within the predetermined temperature range within a predetermined time.

10. The heating monitoring method of claim 8, wherein, Before pushing the workpiece into the heating furnace at the rear end, the method further comprises the step of: pushing the workpiece into the preheating channel, preheating the workpiece by the heat flowing into the preheating channel from the heating furnace, and pushing the workpiece into the heating furnace at the rear end after preheating.

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