A batch testing device for the surface hardness of oven control panels

Abstract

This invention relates to the field of hardness testing technology and discloses a batch testing device for the surface hardness of oven control panels, including a support; a material bin for stacking untested control panels; and a testing component for batch cyclic testing of the hardness of control panels and marking unqualified control panels. The testing component includes a power unit, a pressure testing device, and a marking device. This batch testing device for the surface hardness of oven control panels can achieve hardness testing of oven control panels under both molded and high-temperature conditions through the testing component. Using the bending shape as a reference value, it detects the difference in bending hardness changes of control panels at two different temperatures, thereby simulating the hardness change value at normal room temperature and the bending hardness change value after heating. The purpose of heating is to simulate the actual state of an oven during operation and heating, thereby achieving rapid testing of the oven control panels.

Description

Technical Field

[0001] This invention relates to the field of hardness testing technology, specifically to a batch testing device for the surface hardness of an oven control panel. Background Technology

[0002] An electric oven is a kitchen appliance that uses radiant heat from electric heating elements to bake food. Electric ovens can be used to process various types of bread, such as bread, and also to make pastries like egg tarts and cookies. The back panel of an electric oven is usually made of metal and is used for heat dissipation and wiring; it typically has a specific textured surface.

[0003] Currently, oven control panels require a series of tests after processing, especially hardness testing. This is because many control panels are now integrally molded with the oven door, making their hardness crucial. Ovens operate at high temperatures, so the panel's hardness must withstand this environment. Insufficient panel hardness leads to softening, deformation, and reduced hardness, significantly impacting its lifespan. A shortened lifespan also poses safety hazards, potentially causing sealing failures and temperature imbalances. Therefore, this paper proposes a batch testing device for the surface hardness of oven control panels to address these issues. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a batch testing device for the surface hardness of oven control panels, which solves the problems of inconvenience in testing the hardness of the control surfaces of electric ovens and the inability to achieve efficient batch and cyclic testing in existing technologies.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a batch testing device for the surface hardness of oven control panels, comprising a support; a material bin for stacking untested control panels; and a testing component for batch cyclically testing the hardness of control panels and marking unqualified control panels; the testing component includes a power unit, a pressure testing device, and a marking device; the power unit is used to cyclically feed the untested control panels; the pressure testing device, driven by the power unit, continuously cyclically presses up and down, thereby controlling the marking device to test the hardness of the control panels.

[0008] Preferably, a discharge rack is connected to the support, a flat plate is installed on the support, a discharge slot is provided on the flat plate above the discharge rack, a protrusion is provided on the flat plate and the control panel abuts against the protrusion, and a positioning frame is provided on the flat plate for clamping the material box.

[0009] Preferably, the power unit includes a drive motor, the output end of the drive motor is fixedly connected to a semicircular plate, a crank rod is fixedly connected to the semicircular plate, a ball sleeve is movably connected to the semicircular plate, a connecting sleeve is fixedly connected to the ball sleeve, four rotating plates are installed on the connecting sleeve, four long slots are opened on the ball sleeve, and the semicircular plate is connected to the pressure detection device.

[0010] Preferably, the pressure testing device includes a square sleeve, a sliding shaft is slidably connected inside the square sleeve, a bottom rod is connected to the bottom of the square sleeve, the bottom rod is slidably connected to a support, an upper connecting rod is connected to the square sleeve, the upper connecting rod is connected to a V-frame through a connector, the V-frame is connected to a marking device, and a connecting handle is fixedly connected to the sliding shaft, the connecting handle being fixed at the center of the semicircular plate.

[0011] Preferably, the connector includes an adjusting sleeve, which is threadedly connected to the upper connecting rod and rotatably connected to the V-shaped frame.

[0012] 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 a V-shaped frame, the bottom of the pressure rod is connected to a crossbar, and the two ends of the crossbar are connected to pressure cones.

[0013] Preferably, it also includes a marking device, the marking device including a top column, the bottom of the crossbar being connected to the top column, a rotating frame being provided below the top column, the rotating frame being rotatably connected to a fixed frame, the right end of the fixed frame being fixedly connected to the flat plate frame, and an ink pad being provided at one end of the rotating frame.

[0014] Preferably, it also includes a display device, the display device including a support plate, the top of the pressure rod being connected to the support plate, a rack being fixedly connected to the support plate, a pinion meshing on the rack, a pointer being fixedly connected inside the pinion via a shaft, and a display disk being rotatably connected to the shaft.

[0015] Preferably, a cover is fixedly connected to the plate frame, and a bottom cover is connected to the bottom of the plate frame, with multiple heating rods disposed inside the bottom cover.

[0016] Preferably, the marking device is provided in two sets, one set of the marking device is located outside the cover, and the other set of the marking device is located on the bottom cover.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a batch detection device for the surface hardness of oven control panels, which has the following beneficial effects:

[0019] 1. This oven control panel surface hardness batch testing device, through its set testing components, can detect the hardness of the oven control panel under both the molded state and the high-temperature state. Using the bending shape as a reference value, it detects the difference in bending hardness changes 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 actual state of the oven during operation and heating, thereby achieving rapid testing of the oven control panel.

[0020] 2. This oven control panel surface hardness batch testing device, through the cyclic action of the power unit, can realize the batch repositioning of control panels, and perform continuous or batch testing operations, thereby improving the equipment's testing efficiency for control panels.

[0021] 3. The oven control panel surface hardness batch detection device, through the set display device and marking device, can realize the specific value of the surface bending hardness of the control panel when it is subjected to pressure, and mark the control panels that do not meet the standard or have low hardness, thereby providing a certain degree of marking for subsequent material receiving and facilitating the subsequent packaging of qualified products. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a batch testing device for the surface hardness of an oven control panel proposed in this invention;

[0023] Figure 2 This is a schematic diagram of the support connection structure of a batch testing device for the surface hardness of an oven control panel proposed in this invention;

[0024] Figure 3 This is a schematic diagram of the power unit structure of a batch testing device for the surface hardness of an oven control panel proposed in this invention;

[0025] Figure 4 This is a schematic diagram of the ball sleeve connection structure of a batch testing device for the surface hardness of an oven control panel proposed in this invention;

[0026] Figure 5 This is a schematic diagram of the marking device structure of a batch detection device for the surface hardness of an oven control panel proposed in this invention;

[0027] Figure 6This is a schematic diagram of the connection structure between the display device and the trace device of a batch detection device for the surface hardness of an oven control panel according to the present invention;

[0028] Figure 7 This is a schematic diagram of the oven control panel structure proposed in this invention;

[0029] Figure 8 This is a cross-sectional structural diagram of the cover of a batch testing device for the surface hardness of an oven control panel proposed in this invention.

[0030] In the diagram: 1. Support; 2. Material box; 3. Discharge rack; 4. Flat plate frame; 5. Detection component; 501. Drive motor; 502. Semicircular plate; 503. Crank rod; 504. Ball sleeve; 505. Long groove; 506. Connecting sleeve; 507. Positioning frame; 508. Rotating plate; 509. Pressure testing device; 5091. Square sleeve; 5092. Base rod; 5093. Upper connecting rod; 5094. Adjustment. Set; 5095, V-shaped frame; 5096, connecting handle; 5097, sliding shaft; 510, display panel; 511, pressure spring; 512, pointer; 513, pinion; 514, rack; 515, support plate; 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 Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-8 A batch testing device for the surface hardness of oven control panels includes a support 1; a material box 2 for stacking untested control panels; and a testing component 5 for batch cyclic testing of the hardness of the control panels and marking unqualified control panels. The testing component 5 includes a power unit, a pressure testing device 509, and a marking device. The power unit is used to cyclically feed the untested control panels. Driven by the power unit, the pressure testing device 509 continuously presses the control panels up and down, thereby controlling the marking device to test the hardness of the control panels.

[0033] In this embodiment, a discharge rack 3 is connected to the support 1, and a flat plate frame 4 is installed on the support 1. A discharge slot 6 is provided on the flat plate frame 4 above the discharge rack 3. A protrusion is provided on the flat plate frame 4, and the control panel abuts against the protrusion. The protrusion is designed to prevent the control panel from detaching from the two rotating plates 508 during the displacement process. A positioning frame 507 is provided on the flat plate frame 4, 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 plate frame 4, thereby providing room for the rotating plates 508 to rotate. Each rotation of the rotating plates 508 will cause the bottom control panel to move out, realizing automatic material discharge.

[0034] Furthermore, the power unit includes a drive motor 501, with a semicircular plate 502 fixedly connected to the output end of the drive motor 501. A crank rod 503 is fixedly connected to the semicircular plate 502, and a ball sleeve 504 is movably connected to the semicircular plate 502. A connecting sleeve 506 is fixedly connected to the ball sleeve 504, and four rotating plates 508 are mounted on the connecting sleeve 506. The ball sleeve 504 has four long slots 505. The semicircular plate 502 is connected to the pressure detection device 509. Controlling the rotation of the drive motor 501 drives the semicircular plate 502 and the crank rod 503 to rotate synchronously. When the crank rod 503 rotates, it will engage 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 plates 508 to rotate through the connecting sleeve 506. The rotation of the four rotating plates 508 will control the control panel located on the flat plate frame 4 to perform position transfer, realizing a 90-degree position change. Each rotation of the crank lever 503 causes it to enter the long slot 505, thereby rotating the ball sleeve 504 90 degrees. Once the crank lever 503 disengages from the ball sleeve 504, the semi-circular plate 502 enters the arc surface of the ball sleeve 504, fixing its position and preventing it from wobbling. This cycle continues, and as the drive motor 501 rotates continuously, it drives the detection control panel to change position by 90 degrees until it disengages.

[0035] In addition, the pressure testing device 509 includes a square sleeve 5091, a sliding shaft 5097 is slidably connected inside the square sleeve 5091, a bottom rod 5092 is connected to the bottom of the square sleeve 5091, the bottom rod 5092 is slidably connected to the support 1, an upper connecting rod 5093 is connected to the square sleeve 5091, the upper connecting rod 5093 is connected to a V-frame 5095 through a connector, the V-frame 5095 is connected to the marking device, and a connecting handle 5096 is fixedly connected to the sliding shaft 5097, the connecting handle 5096 is fixed at the center position of the semi-circular plate 502. As the semicircular plate 502 rotates synchronously, the connecting handle 5096 drives the sliding shaft 5097 to rotate. 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, which in turn drives the upper connecting rod 5093 to move up and down, providing cyclic power for the subsequent detection of the marking device. Each rotation of the overall drive motor 501 will not only change the position of the control panel, but also perform cyclic pressure action, realizing continuous cyclic detection.

[0036] In addition, the connecting parts include an adjusting sleeve 5094, which is threadedly connected to the upper connecting rod 5093 and rotatably connected to the V-frame 5095. Through the threaded connection between the adjusting sleeve 5094 and the upper connecting rod 5093, the operator can manually rotate the adjusting sleeve 5094 to control the vertical height adjustment of the V-frame 5095, thereby controlling the limit 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 indirectly controls the downward movement distance of the crossbar 517 and also controls the compressive force of the pressure spring 511, thus coping with hardness testing under different pressure standards.

[0037] It is worth noting 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 crossbar 517, and the two ends of the crossbar 517 are connected to pressure cones. When the upper connecting rod 5093 moves, it drives the pressure rod 516 to move up and down through the V-bracket 5095. When the upper connecting rod 5093 moves down, the pressure spring 511 provides the downward movement of the pressure rod 516, which in turn controls the two pressure cones on the crossbar 517 to act on the surface of the control panel. Then, the elastic force of the pressure spring 511 provides a certain amount of compressive force, which in turn compresses the control panel. If the control panel is hard, it will produce a slight deformation. The pressure cones acting on the surface of the control panel provide a certain amount of compressive force, so the control panel will be compressed and undergo a certain degree of softening deformation. Since the bottom of the pressure cone has a sharp surface, if the control panel is soft, the pressure cone will also leave a mark of a certain depth on the control panel. Conversely, if the control panel is soft, the pressure cone will not leave any mark.

[0038] Furthermore, it also includes a marking device, which comprises a top post 518, with the bottom of a crossbar 517 connected to the top post 518. A rotating frame 520 is located below the top post 518, and a fixed frame 519 is rotatably connected to the rotating frame 520. The right end of the fixed frame 519 is fixedly connected to the flat plate frame 4, and 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 post 518 to abut against the rotating frame 520. Utilizing the lever principle, this will reverse the rotation of the rotating frame 520, thus imprinting the end with the ink pad on the left side onto the back of the control panel, forming a mark. Afterwards, during product collection, the operator can determine whether the hardness of the control panel meets the standard by checking whether the mark is present on the back.

[0039] Furthermore, it also includes a display device, which comprises a support plate 515. The top of the pressure rod 516 is connected to the support plate 515. A rack 514 is fixedly connected to the support plate 515, and a pinion 513 meshes with the rack 514. A pointer 512 is fixedly connected inside the pinion 513 via a shaft, and a display panel 510 is rotatably connected to the shaft. When the pressure rod 516 moves down, it will simultaneously drive the rack 514 down through the support plate 515. Through the meshing of the gears, the pointer 512 on the shaft will rotate. Therefore, the operator can check the hardness and bending values ​​of the control panel for each test. As long as the values ​​are within a certain error range, it provides a reference value for the control panel test.

[0040] It is worth noting that a cover 522 is fixedly connected to the plate frame 4, and a bottom cover 523 is connected to the bottom of the plate frame 4. Multiple heating rods 521 are installed inside the bottom cover 523. Two sets of marking devices are provided: one set is located outside the cover 522, and the other set is located on the bottom cover 523. These two sets of marking devices enable multi-directional detection of the control panel under both room temperature and high temperature (simulating an oven environment), improving the accuracy of the control panel detection. Furthermore, the two sets of detection values ​​can also determine the difference in softening degree between the control panel and the high temperature setting; a larger difference indicates a lower quality control panel, and vice versa.

[0041] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that provides control.

[0042] The working principle is as follows: First, the operator needs to stack the control panels to be tested inside the material box 2. The bottom control panel will either fall off or be supported by the plate frame 4, and is located between two rotating plates 508. Then, the drive motor 501 is controlled to rotate, which in turn drives the semi-circular plate 502 and the crank 503 to rotate synchronously. When the crank 503 rotates, it will cooperate with the long groove 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 plates 508 to rotate through the connecting sleeve 506. The rotation of the four rotating plates 508 will control the control panel located on the plate frame 4 to transfer its position, realizing a 90-degree position change. Then, as... The synchronous rotation of the semicircular plate 502 will drive the sliding shaft 5097 to rotate via 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, which in turn drives the upper connecting rod 5093 to move up and down. The upper connecting rod 5093 will then drive the pressure rod 516 to move up and down via the V-shaped bracket 5095. When the upper connecting rod 5093 moves down, the pressure rod 516 will move down through the connection of the pressure spring 511, thereby controlling the two pressure cones on the crossbar 517 to act on the surface of the control panel. Then, the elastic force of the pressure spring 511 will provide a certain compressive force to compress the control panel. If 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 will be larger, so the reverse compressive force on the pressure spring 511 will be smaller, and the length of the pressure spring 511 will be longer. Therefore, a display device is set up. When the pressure rod 516 moves down, it will simultaneously drive the rack 514 to move down through the support plate 515. After the gear meshing, it will drive the pointer 512 on the shaft to rotate. So the operator can check the hardness bending value of the control panel each time according to the test. It is acceptable if it is within a certain error range. 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. Using the lever principle, it will control the rotating frame 520 to rotate in the opposite direction, thereby imprinting the end face with the ink pad on the back of the control panel to form a mark. Afterwards, when the operator collects the products, he can check whether there is a mark on the back to determine whether the hardness of the control panel meets the standard.This process takes place in an external environment, but the technical solution also includes a high-temperature simulation environment. Specifically, the heating rod 521 inside the base cover 523 will continuously heat up after being powered on. Then, as the drive motor 501 rotates, it controls the rotating plate 508 to rotate, thus repositioning it between the cover 522 and the base cover 523. The two rotating plates 508 are precisely positioned between the cover 522 and the base cover 523, forming a relatively enclosed space. Therefore, the heating rod 521 will generate a certain degree of high temperature, simulating the internal space of an oven, to bake 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 take to reposition. Therefore, the operator can adjust the rotation speed of the drive motor 501 according to the actual heating time. Afterwards, another set of display devices, marking devices, and marking devices with the same structure will activate again, using the same principle to perform hardness bending tests on the control panel under high temperature. The bending value will also be displayed on the display device. The operator can compare the parameters of the two tests to understand the difference in hardness of the control panel under room temperature and high temperature. As the drive motor 501 continues to rotate, it will cause the control panel to reposition, moving to the position of the discharge chute 6, and then falling onto the discharge rack 3, achieving automatic material discharge. Meanwhile, the control panel at the bottom of the material bin 2 will automatically fall back between the other two rotating plates 508 as it moves. Therefore, the entire technical solution achieves a complete closed-loop detection, from automatic material repositioning to room temperature detection of the panel, then to high temperature detection, and finally to material discharge, all in a cycle. This improves the overall detection efficiency of the control panel and provides a clear display of the detection values, offering numerical references for testing. Furthermore, using ink pad markings, operators can directly judge the quality of the control panel based on whether it has markings.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A batch testing device for the surface hardness of an oven control panel, characterized in that, include Support (1); Container (2), used for stacking untested control panels; The testing component (5) is used to perform batch cyclic testing of the hardness of the control panel and to mark the unqualified control panel. The detection component (5) includes a power unit, a pressure testing device (509), and a marking device; The power unit is used to cyclically feed the undetected control panel; The pressure testing device (509) is driven by the power device to continuously press up and down, thereby controlling the marking device to test the hardness of the control panel; The power unit includes a drive motor (501), the output end of which is fixedly connected to a semicircular plate (502). A crank rod (503) is fixedly connected to the semicircular plate (502), and a ball sleeve (504) is movably connected to the semicircular plate (502). A connecting sleeve (506) is fixedly connected to the ball sleeve (504), and four rotating plates (508) are mounted on the connecting sleeve (506). The ball sleeve (504) has openings... There are four long slots (505), and the semi-circular plate (502) is connected to the pressure testing device (509). The drive motor (501) drives the crank (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 limit rotation. Thus, the four rotating plates (508) connected to the ball sleeve (504) rotate ninety degrees to drive the detection control panel to perform a ninety-degree cyclic reposition. The pressure testing device (509) includes a square sleeve (5091), a sliding shaft (5097) is slidably connected inside the square sleeve (5091), a bottom rod (5092) is connected to the bottom of the square sleeve (5091), the bottom rod (5092) is slidably connected to the support (1), an upper connecting rod (5093) is connected to the square sleeve (5091), the upper connecting rod (5093) is connected to a V-frame (5095) through a connector, the V-frame (5095) is connected to a marking device, a connecting handle (5096) is fixedly connected to the sliding shaft (5097), and the connecting handle (5096) is fixed at the center of the semicircular plate (502); The connector includes an adjusting sleeve (5094), which is threadedly connected to the upper connecting rod (5093) and is rotatably connected to the V-frame (5095). 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 a V-shaped frame (5095). The bottom of the pressure rod (516) is connected to a crossbar (517), and both ends of the crossbar (517) are connected to pressure cones.

2. The batch testing device for the surface hardness of an oven control panel according to claim 1, characterized in that: The support (1) is connected to the discharge rack (3), and the support (1) is equipped with a flat plate frame (4). The flat plate frame (4) is provided with a discharge groove (6) above the discharge rack (3). The flat plate frame (4) is provided with a protrusion, and the control panel abuts against the protrusion. The flat plate frame (4) is provided with a positioning frame (507), which is used to clamp the material box (2).

3. The batch testing device for the surface hardness of an oven control panel according to claim 2, characterized in that: It also includes a marking device, which includes a top post (518), the bottom of the crossbar (517) is connected to the top post (518), a rotating frame (520) is provided below the top post (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 plate frame (4), and an ink pad is provided at one end of the rotating frame (520).

4. The batch testing device for the surface hardness of an oven control panel according to claim 3, characterized in that: It also includes a display device, which includes a support plate (515), the top of the 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 on the rack (514), a pointer (512) is fixedly connected inside the pinion (513) through a shaft, and a display disk (510) is rotatably connected to the shaft.

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

6. The batch testing device for the surface hardness of an oven control panel according to claim 5, characterized in that: The marking device is provided in two sets, one set of the marking device is set outside the cover (522), and the other set of the marking device is set on the bottom cover (523).

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