Batch detection device for surface hardness of oven control panel

Abstract

The invention relates to the technical field of hardness detection, and discloses an oven control panel surface hardness batch detection device which comprises a support. The material box is used for stacking and placing undetected control panels; the detection assembly is used for circularly detecting the hardness of the control panels in batches and marking the unqualified control panels; the detection assembly comprises a power device, a pressure detection device and a marking device; according to the oven control panel surface hardness batch detection device, hardness detection of the oven control panel in a forming state and a high-temperature state can be achieved through the arranged detection assembly, the bending shape serves as a reference value, the bending hardness change difference of the two sets of control panels at different temperatures is detected, and the detection accuracy is improved. The control panel of the oven can be rapidly detected by heating the control panel of the oven, so that the hardness change value at normal room temperature and the bending hardness change value after the heating process are simulated, and the purpose of heating is to simulate the actual state of the oven during operation and heating, so that the control panel of the oven can be rapidly detected.

Description

Technical Field

[0001] The present invention relates to the technical field of hardness detection, in particular to a device for batch detecting the surface hardness of an oven control panel. Background Art

[0002] An electric oven is a kitchen appliance that uses radiant heat from an electric heating element to bake food. It can be used to prepare pasta dishes such as bread, as well as snacks like egg tarts and cookies. The back panel of an electric oven is typically made of metal, serving as a heat dissipation mechanism and wiring arrangement. It typically features a specific concave and convex structure.

[0003] At present, after the control panel of the oven is processed and formed, it is necessary to perform a series of tests on the panel, especially hardness test, because many control panels are now integrally formed with the oven door, that is, the control panel and the oven door are an integrated structure, and the hardness of the control panel is particularly important. Because the oven is baked at a certain degree of high temperature inside during actual use, the hardness of the panel must also be baked under a high temperature environment. If the hardness of the panel is too low, it will cause the control panel to soften, deform, and reduce the hardness, which will greatly affect the service life of the control panel. As the service life of the panel decreases, it will also cause a certain degree of safety hazards. At the same time, problems such as sealing failure and temperature imbalance may also occur. Therefore, a batch detection device for the surface hardness of oven control panels is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] (1) Technical problems solved In view of the shortcomings of the existing technology, the present invention provides a batch detection device for the surface hardness of an oven control panel, which solves the problem that the hardness detection of the control surface of an electric oven in the existing technology is inconvenient and cannot achieve efficient batch cycle detection.

[0005] (2) Technical solution To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a batch detection device for the surface hardness of an oven control panel, comprising a support; a material box for stacking uninspected control panels; a detection component for batch cyclic detection of the hardness of the control panels and marking unqualified control panels; the detection component comprises a power device, a pressure detection device and a marking device; the power device is used to cyclically feed the uninspected control panels; the pressure detection device is driven by the power device to continuously cycle up and down to press and thereby control the marking device to detect the hardness of the control panel.

[0006] Preferably, the support is connected to a discharge rack, a flat plate is mounted on the support, a discharge trough is provided on the flat plate above the discharge rack, a protrusion is provided on the flat plate, and the control panel is in contact with the protrusion, a positioning rack is provided on the flat plate, and the positioning rack is used to clamp the material box.

[0007] Preferably, the power device includes a driving motor, the output end of the driving motor is fixedly connected to a semicircular plate, the semicircular plate is fixedly connected to a crank rod, the semicircular plate is movably connected to a ball sleeve, the ball sleeve is fixedly connected to a connecting sleeve, four rotating plates are installed on the connecting sleeve, the ball sleeve is provided with four long slots, and the semicircular plate is connected to the pressure detection device.

[0008] Preferably, the pressure inspection device includes a square sleeve, the interior of the square sleeve is slidably connected to a sliding shaft, the bottom of the square sleeve is connected to a bottom rod, the bottom rod is slidably connected to a support, the square sleeve is connected to an upper connecting rod, the upper connecting rod is connected to a V-frame through a connecting piece, the V-frame is connected to the marking device, a connecting handle is fixedly connected to the sliding shaft, and the connecting handle is fixed at the center position of the semicircular plate.

[0009] Preferably, the connecting member includes an adjusting sleeve, the adjusting sleeve is threadedly connected to the upper connecting rod, and the adjusting sleeve is rotatably connected to the V-frame.

[0010] Preferably, the marking device includes a pressure rod, a pressure spring is sleeved on the pressure rod, the bottom of the pressure spring is connected to the pressure rod through a pressure plate, the top of the pressure spring is connected to the V-frame, the bottom of the pressure rod is connected to a cross bar, and both ends of the cross bar are connected to pressure cones.

[0011] Preferably, a trace device is also included, which includes a top column, the bottom of the cross bar is connected to the top column, a rotating frame is provided below the top column, the rotating frame is rotatably connected to a fixed frame, the right end of the fixed frame is fixedly connected to the flat frame, and one end of the rotating frame is provided with ink.

[0012] Preferably, a display device is also included, which includes a support plate, the top of the pressure rod is connected to the support plate, a rack is fixedly connected to the support plate, a pinion is engaged with the rack, a pointer is fixedly connected to the inside of the pinion through a shaft, and the shaft is rotatably connected to a display disk.

[0013] Preferably, a cover body is fixedly connected to the flat plate frame, a bottom cover is connected to the bottom of the flat plate frame, and a plurality of heating rods are arranged in the bottom cover.

[0014] Preferably, the marking devices are provided in two groups, one group of marking devices is provided outside the cover body, and the other group of marking devices is provided on the bottom cover.

[0015] (3) Beneficial effects Compared with the prior art, the present invention provides a batch detection device for the surface hardness of an oven control panel, which has the following beneficial effects: 1. The batch detection device for the surface hardness of the oven control panel can realize the hardness detection of the oven control panel in the formed state and the high-temperature state through the detection components set. The bending shape is used as the reference value to detect the difference in the bending hardness change of the control panel at two different temperatures, thereby simulating the hardness change value at normal room temperature and the bending hardness change value after the heating process. The purpose of heating is to simulate the state of the actual oven during operation and heating, so as to realize rapid detection of the oven control panel.

[0016] 2. The oven control panel surface hardness batch detection device can realize batch replacement of the control panel through the cyclic action of the power device, and perform continuous or batch detection operations, thereby improving the equipment's detection efficiency of the control panel.

[0017] 3. The batch detection device for the surface hardness of the oven control panel can realize the specific value of the surface bending hardness of the control panel when it is under pressure through the display device and the trace device, and mark the control panels that do not meet the standards or have low hardness, thereby providing a certain degree of marking for subsequent material collection and facilitating the subsequent packaging of qualified products. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a batch detection device for the surface hardness of an oven control panel proposed by the present invention; Figure 2 This is a schematic diagram of the support connection structure of a batch detection device for the surface hardness of an oven control panel proposed by the present invention; Figure 3 This is a schematic diagram of the power device structure of a batch detection device for the surface hardness of an oven control panel proposed by the present invention; Figure 4 This is a schematic diagram of the ball sleeve connection structure of a batch detection device for the surface hardness of an oven control panel proposed by the present invention; Figure 5 This is a schematic structural diagram of a marking device for a batch detection device of the surface hardness of an oven control panel proposed by the present invention; Figure 6 This is a schematic diagram of the connection structure of the display device and the trace device of a batch detection device for the surface hardness of an oven control panel proposed by the present invention; Figure 7 This is a schematic structural diagram of the oven control panel proposed by the present invention; Figure 8The figure is a schematic cross-sectional view of the cover of a device for batch testing the surface hardness of an oven control panel proposed by the present invention.

[0019] In the figure: 1. Support; 2. Material box; 3. Discharging rack; 4. Flat rack; 5. Detection assembly; 501. Drive motor; 502. Semicircular plate; 503. Crank rod; 504. Ball sleeve; 505. Long slot; 506. Connecting sleeve; 507. Positioning frame; 508. Rotating plate; 509. Pressing inspection device; 5091. Square sleeve; 5092. Bottom rod; 5093. Upper connecting rod; 5094. Adjustment 6. Sleeve; 5095. V-frame; 5096. Connecting handle; 5097. Sliding shaft; 510. Display panel; 511. Pressure spring; 512. Pointer; 513. Pinion; 514. Rack; 515. Supporting piece; 516. Pressure rod; 517. Crossbar; 518. Top column; 519. Fixed frame; 520. Rotating frame; 521. Heating rod; 522. Cover; 523. Bottom cover; 6. Discharge chute. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1-8 A batch testing device for the surface hardness of an oven control panel comprises a support 1; a material box 2 for stacking untested control panels; a testing component 5 for batch cyclically testing the hardness of control panels and marking unqualified control panels; the testing component 5 comprises a power device, a pressure testing device 509 and a marking device; the power device is used to cyclically feed untested control panels; the pressure testing device 509 is driven by the power device to continuously cycle up and down to press and thereby control the marking device to test the hardness of the control panel.

[0022] In this embodiment, the support 1 is connected to the discharge rack 3, and the support 1 is equipped with a flat rack 4. The flat rack 4 is provided with a discharge chute 6 above the discharge rack 3. The flat rack 4 is provided with a protrusion, and the control panel abuts against the protrusion. The protrusion is provided to prevent the control panel from being separated from the two rotating pieces 508 during the displacement process. The flat rack 4 is provided with a positioning frame 507, which is used to clamp the material box 2. The positioning frame 507 fixes the material box 2 by clamping, and there is a certain gap between the height of the material box 2 and the flat rack 4, thereby providing a rotational clearance for the rotating piece 508. Each rotation of the rotating piece 508 will drive the bottom control panel to move out, thereby realizing automatic discharge.

[0023] Furthermore, the power device includes a drive motor 501, the output end of which is fixedly connected to a semicircular plate 502, to which a crank rod 503 is fixedly connected, to which a ball sleeve 504 is movably connected, to which a connecting sleeve 506 is fixedly connected, to which four rotating pieces 508 are mounted, and on which four long slots 505 are formed. The ball sleeve 504 is connected to a pressure detection device 509. The rotation of the drive motor 501 is controlled to drive the synchronous rotation of the semicircular plate 502 and the crank rod 503. When the crank rod 503 rotates, it will cooperate with the long slots 505 on the ball sleeve 504, thereby driving the ball sleeve 504 to rotate 90 degrees. The rotation of the ball sleeve 504 will drive the four rotating pieces 508 to rotate through the connecting sleeve 506. The rotation of the four rotating pieces 508 will control the position shift of the control panel located on the flat frame 4, thereby achieving a 90-degree position shift. Each time the crank rod 503 rotates one circle, it enters the long slot 505 and drives the ball sleeve 504 to rotate 90 degrees. When the crank rod 503 is released from the ball sleeve 504, the semicircular plate 502 enters the arc surface of the ball sleeve 504 to limit the position of the ball sleeve 504 and prevent the ball sleeve 504 from shaking. This cycle continues. When the drive motor 501 continues to rotate, it will drive the detection control panel to rotate 90 degrees until it is released.

[0024] In addition, the pressure inspection device 509 includes a square sleeve 5091, the interior of the square sleeve 5091 is slidably connected to a sliding shaft 5097, the bottom of the square sleeve 5091 is connected to a bottom rod 5092, the bottom rod 5092 is slidably connected to the support 1, the square sleeve 5091 is connected to an upper connecting rod 5093, the upper connecting rod 5093 is connected to a V-frame 5095 through a connecting piece, the V-frame 5095 is connected to the marking device, and a connecting handle 5096 is fixedly connected to the sliding shaft 5097, and the connecting handle 5096 is fixed at the center position of the semicircular plate 502. As the semicircular plate 502 rotates synchronously, the sliding shaft 5097 will be driven to rotate through the connecting handle 5096. The rotation of the sliding shaft 5097 will slide in the inner groove of the square sleeve 5091, thereby driving the square sleeve 5091 to move up and down, and then driving the upper connecting rod 5093 to move up and down, providing circulating power for the subsequent detection of the marking device. Every time the overall drive motor 501 rotates one circle, it will replace the control panel and perform an up and down cyclic pressure action to achieve continuous cyclic detection.

[0025] In addition, the connecting member includes an adjustment sleeve 5094, which is threadedly connected to the upper connecting rod 5093 and is rotatably connected to the V-frame 5095. Through the threaded connection between the adjustment sleeve 5094 and the upper connecting rod 5093, the operator can manually rotate the adjustment sleeve 5094 to control the vertical height adjustment of the V-frame 5095, thereby adjusting the extreme position of the pressure rod 516. Because the vertical displacement of the entire upper connecting rod 5093 is fixed, adjusting the height of the V-frame 5095 will indirectly adjust the downward movement distance of the crossbar 517 and the extrusion force of the pressure spring 511, thereby coping with hardness testing under different pressure standards.

[0026] It is worth noting that the marking device includes a pressure rod 516, on which a pressure spring 511 is sleeved, the bottom of the pressure spring 511 is connected to the pressure rod 516 through a pressure plate, the top of the pressure spring 511 is connected to the V-frame 5095, the bottom of the pressure rod 516 is connected to a cross bar 517, and both ends of the cross bar 517 are connected to pressure cones. When the upper connecting rod 5093 moves, it will drive the pressure rod 516 to move up and down through the V-frame 5095. When the upper connecting rod 5093 moves downward, the pressure rod 516 will be provided with a downward movement through the connection of the pressure spring 511, thereby controlling the two pressure cones on the cross bar 517 to act on the surface of the control panel. Then, the elastic force of the pressure spring 511 is used to provide a certain extrusion force, thereby squeezing the control panel. If the hardness of the control panel is relatively hard, it will produce a slight deformation. By using the pressure cone to act on the surface of the control panel to provide a certain extrusion force, the control panel will be compressed to produce a certain degree of softening deformation. The bottom of the pressure cone has a sharp surface, so if the control panel is relatively soft, the pressure cone will also leave a mark of a certain depth on the control panel. On the contrary, the control panel will be pressed down by the pressure cone, and no mark will be produced.

[0027] Furthermore, a marking device is also included, which includes a top column 518. The bottom of the crossbar 517 is connected to the top column 518. A rotating frame 520 is provided below the top column 518. The rotating frame 520 is rotatably connected to a fixed frame 519. The right end of the fixed frame 519 is fixedly connected to the flat frame 4. An ink pad is provided at one end of the rotating frame 520. If the hardness of the control panel is extremely poor, the crossbar 517 will move down to a lower position, thereby controlling the top column 518 to abut against the rotating frame 520. The lever principle will reversely control the rotation of the rotating frame 520, thereby printing the end face with the ink pad on the left end on the back of the control panel, forming a mark. Later, when the operator collects the product, he can check whether the back has the mark to determine whether the hardness of the control panel meets the standard.

[0028] Furthermore, a display device is also included. The display device includes a support plate 515. The top of a pressure rod 516 is connected to the support plate 515. A rack 514 is fixedly connected to the support plate 515. A pinion 513 is meshed with the rack 514. A pointer 512 is fixedly connected to the interior of the pinion 513 via a shaft. The shaft is rotatably connected to the display panel 510. When the pressure rod 516 moves downward, it will synchronously drive the rack 514 downward through the support plate 515. The meshing of the gears will drive the pointer 512 on the shaft to rotate. Therefore, the operator can check the hardness bending value of the control panel each time according to each test. If it is within a certain error range, it can provide a numerical reference for the control panel test.

[0029] It's worth noting that a cover 522 is fixedly connected to the pallet 4, and a bottom cover 523 is connected to the bottom of the pallet 4. Multiple heating rods 521 are located within the bottom cover 523. Two sets of marking devices are provided: one set on the exterior of the cover 522, and the other set on the bottom cover 523. These two sets of marking devices enable multi-directional testing of the control panel at both room temperature and high temperature (simulating an oven environment), improving inspection accuracy. Furthermore, the two sets of test values ​​can be used to determine the difference in softening between the control panel at room temperature and at high temperature. A larger difference indicates lower quality, and vice versa.

[0030] The electrical components mentioned in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that serves as a control device for a computer or the like.

[0031] Working principle: first, the operator needs to stack the control panels to be tested and place them inside the material box 2, and the bottom control panel will fall or be carried by the flat frame 4 and be located between the two rotating pieces 508. Then, the operator controls the rotation of the drive motor 501, thereby driving the synchronous rotation of the semicircular plate 502 and the crank rod 503. When the crank rod 503 rotates, it will cooperate with the long groove 505 on the ball sleeve 504, thereby driving the ball sleeve 504 to rotate ninety degrees. The rotation of the ball sleeve 504 will drive the four rotating pieces 508 to rotate through the connecting sleeve 506. When the four rotating pieces 508 rotate, it will control the position transfer of the control panel on the flat frame 4 to achieve a ninety-degree position conversion. Then, as The synchronous rotation of the semicircular plate 502 will drive the sliding shaft 5097 to rotate through the connecting handle 5096, and the rotation of the sliding shaft 5097 will slide in the inner groove of the square sleeve 5091, thereby driving the square sleeve 5091 to move up and down, and then driving the upper connecting rod 5093 to move up and down, and the upper connecting rod 5093 will drive the pressure rod 516 to move up and down through the V-shaped frame 5095. When the upper connecting rod 5093 moves downward, the pressure rod 516 will be provided with downward movement through the connection of the pressure spring 511, thereby controlling the two pressure cones on the cross bar 517 to act on the surface of the control panel. Afterwards, the elastic force of the pressure spring 511 is used to provide a certain extrusion force, thereby squeezing the control panel. If the hardness of the control panel is hard enough, it will produce a slight deformation. At this time, the length of the pressure spring 511 will be shorter. If the hardness of the control panel is poor, the softening deformation produced at this time will be larger, so the reverse extrusion force received by the pressure spring 511 will be smaller, so the length of the pressure spring 511 will be longer. Therefore, a display device is provided. When the pressure rod 516 moves downward, the rack 514 will be driven downward synchronously through the support piece 515. After the gears are engaged, the pointer 512 on the shaft will be driven to rotate. Therefore, the operator can check the hardness bending value of the control panel each time according to each test, within a certain error range. If the hardness of the control panel is extremely poor, the cross bar 517 will move down to a lower position, and then control the top column 518 to abut against the rotating frame 520. The lever principle will be used to reversely control the rotation of the rotating frame 520, and then the end face with the ink pad on the left end will be printed on the back of the control panel to form a mark. Later, when the operator collects the product, he can check whether there is a mark on the back to determine whether the hardness of the control panel meets the standard.While this process is in the external environment, the technical solution also sets up a high-temperature simulation environment. Specifically, the heating rod 521 inside the bottom cover 523 will continue to heat after being powered on. Then, as the drive motor 501 rotates, it will control the rotating piece 508 to rotate and then shift to between the cover body 522 and the bottom cover 523. After the two rotating pieces 508 are just stuck between the cover body 522 and the bottom cover 523, a relatively closed space is formed. Therefore, at this time, the heating rod 521 will generate a certain degree of high temperature, simulating the internal space of an oven, baking the control panel. The baking time depends on the rotation speed of the drive motor 501. The slower the rotation, the longer the control panel will shift. Therefore, the operator can adjust the rotation speed of the drive motor 501 according to the actual heating time. After that, another set of display devices, trace devices, and marking devices with the same structure will be activated again. Using the same principle, the hardness bending test of the control panel under high temperature is performed, and the bending value is also displayed on the display device. The operator can compare the parameters based on the values ​​of the two tests to know the difference in hardness of the control panel at room temperature and high temperature. After that, as the driving motor 501 continues to rotate, it will drive the control panel to continue to shift position, move to the position of the discharge chute 6, and then fall onto the discharge rack 3 to realize automatic discharge. At this time, the control panel at the bottom of the material box 2 will automatically fall back between the other two rotating pieces 508 with the previous shift. Therefore, the entire technical solution realizes a complete closed-loop detection, from the automatic shift of the material, to the normal temperature detection of the panel, then to the high temperature detection of the panel, until the detection and discharge of the panel, the whole cycle is realized, thereby improving the overall detection efficiency of the control panel, and the detection value is intuitively displayed to provide a numerical reference for the detection. In addition, using the mark of the ink, the operator can directly judge the quality of the control panel based on whether the control panel is printed with a mark.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A batch detection device for the surface hardness of an oven control panel, characterized in that: include Support (1); A material box (2) for stacking untested control panels; A detection component (5) is used for batch cycle detection of the hardness of the control panel and marking unqualified control panels; The detection assembly (5) includes a power device, a pressure detection device (509) and a marking device; The power device is used to circulate and feed the undetected control panel; The pressure detection device (509) is driven by a power device to continuously cycle up and down to press and thereby control the marking device to detect the hardness of the control panel; The power device comprises a driving motor (501), an output end of the driving motor (501) is fixedly connected to a semicircular plate (502), a crank rod (503) is fixedly connected to the semicircular plate (502), a ball sleeve (504) is movably connected to the semicircular plate (502), a connecting sleeve (506) is fixedly connected to the ball sleeve (504), four rotating plates (508) are installed on the connecting sleeve (506), and the ball sleeve (504) is provided with a rotating plate (508). There are four long slots (505), and the semicircular plate (502) is connected to the pressure detection device (509); the driving motor (501) drives the crank rod (503) to rotate once, and enters the interior of the long slot (505) to rotate the ball sleeve (504), thereby driving the ball sleeve (504) to perform a ninety-degree limited rotation, thereby using the four rotating pieces (508) connected to the ball sleeve (504) to rotate ninety degrees to drive the detection control panel to perform a ninety-degree cyclic replacement; The pressure inspection device (509) comprises a square sleeve (5091), the interior of the square sleeve (5091) is slidably connected to a sliding shaft (5097), the bottom of the square sleeve (5091) is connected to a bottom rod (5092), the bottom rod (5092) is slidably connected to the support (1), the square sleeve (5091) is connected to an upper connecting rod (5093), the upper connecting rod (5093) is connected to a V-shaped frame (5095) via a connecting member, the V-shaped frame (5095) is connected to the marking device, and a connecting handle (5096) is fixedly connected to the sliding shaft (5097), and the connecting handle (5096) is fixed at the center position of the semicircular plate (502).

2. The oven control panel surface hardness batch detection device according to claim 1, characterized in that: The support (1) is connected to a discharge rack (3), a flat rack (4) is mounted on the support (1), a discharge trough (6) is provided on the flat rack (4) above the discharge rack (3), a protrusion is provided on the flat rack (4), and a control panel abuts against the protrusion, a positioning rack (507) is provided on the flat rack (4), and the positioning rack (507) is used to clamp the material box (2).

3. The device for batch testing the surface hardness of an oven control panel according to claim 1, characterized in that: The connecting member comprises an adjusting sleeve (5094), wherein the adjusting sleeve (5094) is threadedly connected to the upper connecting rod (5093), and the adjusting sleeve (5094) is rotatably connected to the V-frame (5095).

4. The device for batch testing the surface hardness of an oven control panel according to claim 3, characterized in that: The marking device includes a pressure rod (516), a pressure spring (511) is sleeved on the pressure rod (516), the bottom of the pressure spring (511) is connected to the pressure rod (516) through a pressure plate, the top of the pressure spring (511) is connected to the V-shaped frame (5095), the bottom of the pressure rod (516) is connected to a cross bar (517), and both ends of the cross bar (517) are connected to pressure cones.

5. The device for batch testing the surface hardness of an oven control panel according to claim 4, characterized in that: The invention also includes a trace device, which includes a top column (518), the bottom of the cross bar (517) is connected to the top column (518), a rotating frame (520) is provided below the top column (518), the rotating frame (520) is rotatably connected to a fixed frame (519), the right end of the fixed frame (519) is fixedly connected to the flat frame (4), and one end of the rotating frame (520) is provided with an ink pad.

6. The device for batch testing the surface hardness of an oven control panel according to claim 5, characterized in that: The device further comprises a display device, the display device comprising a support plate (515), the top of the pressure rod (516) being connected to the support plate (515), a rack (514) being fixedly connected to the support plate (515), a pinion (513) being meshed with the rack (514), a pointer (512) being fixedly connected to the interior of the pinion (513) via a shaft, and the shaft being rotatably connected to the display disk (510).

7. The device for batch testing the surface hardness of an oven control panel according to claim 6, characterized in that: A cover body (522) is fixedly connected to the flat plate frame (4), a bottom cover (523) is connected to the bottom of the flat plate frame (4), and a plurality of heating rods (521) are arranged in the bottom cover (523).

8. The device for batch testing the surface hardness of an oven control panel according to claim 7, characterized in that: Two groups of marking devices are provided, one group of marking devices is provided outside the cover body (522), and the other group of marking devices is provided on the bottom cover (523).

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