Dry-burning water passing test equipment for heating tube

Abstract

The invention discloses a dry-burning water passing test device for a heating tube. The dry-burning water passing test device comprises a supporting platform, a jig circulating mechanism, two pushing devices, a first transferring mechanism, a second transferring mechanism, a third transferring mechanism, a jig distributing mechanism, a fourth transferring mechanism, a jig and a clamp. The supporting platform is provided with a feeding station, a dry burning testing station, a caching station, a water passing testing station and a discharging station, and a framing station is arranged on the side, corresponding to the discharging station, of the machine cabinet. The jig circulating mechanism is arranged at the bottom of the supporting platform, the two pushing devices are arranged on the inner side of the jig circulating track, the jig is provided with a plurality of clamping assemblies, linkage assemblies and conductive sockets, and the clamp is provided with a telescopic rod and a second driving device for driving the telescopic rod to stretch out and draw back. The dry burning test and the water passing test are integrated on the same equipment, and the waiting time of the water passing test is reasonably utilized due to the arrangement of the cache station, so that the dry burning test can be continuously carried out, and the test efficiency of the equipment can be improved.

Description

Technical Field

[0001] This invention relates to the field of heating element testing equipment, and in particular to a device for testing the dry burning and water passing of heating elements. Background Technology

[0002] Heating elements (also called electric heating tubes) are a general term for tubular electric heating elements. They are the most core and commonly used electric heating components in industrial and civil fields, and their core function is to directly convert electrical energy into heat energy.

[0003] The ceramic heating element manufacturing equipment produces ceramic heating elements through processes such as tube making, tube rolling, and sintering into ceramic. After the ceramic heating element is completed, it needs to be tested by electricity to determine whether the performance of the ceramic heating element is qualified, so as to ensure the normal use of the ceramic heating element in the product.

[0004] Existing ceramic heating element testing methods include dry-burning and water-passing tests, which are performed on two separate devices, increasing the testing cost. Furthermore, since water-passing tests typically take three times longer than dry-burning tests, manual handling is usually required between the two devices, resulting in high labor intensity. Therefore, improving the automation level of ceramic heating element testing equipment is a key research direction in the industry.

[0005] Therefore, it is necessary to design a new technical solution to solve the above problems. Summary of the Invention

[0006] In view of the above, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a dry-burning and water-passing test device for heating elements. This device integrates dry-burning and water-passing tests into a single device by setting up one dry-burning test station and multiple water-passing test stations, along with a buffer station. This makes the overall structure of the device more compact. The buffer station effectively utilizes the waiting time of the water-passing test, allowing the dry-burning test to proceed continuously, thus improving the testing efficiency of the device. Furthermore, a fixture circulation mechanism is included, enabling automatic recycling of the fixtures to ensure the normal operation of the device. Finally, the clamping assembly includes two openable and closable metal clamping arms. Both metal clamping arms are connected to conductive sockets. The clamps are equipped with telescopic rods and a second drive device to extend and retract the telescopic rods. The telescopic rods of the clamps at the loading station, dry-burning test station, third transfer mechanism, and unloading station are all connected to the pressing part of the drive linkage component. The telescopic rods of the clamps at the dry-burning test station and the third transfer mechanism are also connected to conductive posts that are conductively engaged with the conductive sockets, so that the metal clamping arms can automatically open and close and be energized, thereby facilitating the loading, unloading, and energizing of the heating tubes. The structure is ingeniously designed. In addition, the setting of the framing station and the fourth transfer mechanism can realize the automatic framing of the heating tubes, eliminating the need for manual unloading and framing, and the overall degree of automation is high.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A device for testing the dry-burning and water-passing properties of a heating element includes: A support platform is mounted on a cabinet. The support platform is equipped with a feeding station, a dry burning test station, a buffer station, a water immersion test station, and a feeding station. The buffer station is mounted on the top of the support platform. There are multiple water immersion test stations. A framing station is provided on the side of the cabinet corresponding to the feeding station. A fixture circulation mechanism is provided at the bottom of the support platform. The fixture circulation mechanism includes a fixture circulation track and a first driving device for driving the fixture to circulate on the fixture circulation track. The fixture circulation track is provided with openings corresponding to the loading station, the dry burning test station and the water immersion test station. The loading station and the dry burning test station are located on the outside of the fixture circulation track. Two pushing devices are provided, both of which are located inside the jig circulation track and are respectively set for the loading station and the dry burning test station. The pushing devices are used to push the jig out of the opening. The first transfer mechanism is used to transport the fixture from the loading station to the dry burning test station; The second transfer mechanism is used to transport the fixture from the dry burning test station to the buffer station; The third transfer mechanism is used to transport the fixture from the buffer station to the water-passing test station, and to transport the fixture from the water-passing test station to the fixture circulation track. The third transfer mechanism is provided with multiple clamping stations corresponding to the water-passing test station. A fixture distribution mechanism is used to transport fixtures from the buffer station to the third transfer mechanism; The fourth transfer mechanism is used to transport the fixture from the unloading station to the framing station; The fixture includes a mounting plate, multiple clamping assemblies disposed on the mounting plate, a linkage assembly for linking the opening and closing of the clamping assemblies, and a conductive socket connected to the clamping assemblies. The mounting plate is provided with a connector for transfer. The clamping assembly includes two openable and closable metal clamping arms, and both metal clamping arms are connected to the conductive socket. The fixtures are provided at the loading station, dry burning test station, clamping station, and unloading station. Each fixture is equipped with a telescopic rod and a second driving device for extending and retracting the telescopic rod. The telescopic rods of the fixtures at the loading station, dry burning test station, clamping station, and unloading station are all connected to the pressing part of the driving linkage assembly. The telescopic rods of the fixtures at the dry burning test station and the clamping station are also connected to conductive posts that are conductively engaged with conductive sockets.

[0008] As a preferred embodiment, the water-passing test duration of the water-passing test station is three times the dry-burning test duration of the dry-burning test station. Accordingly, there are three water-passing test stations, and a water tank is provided on the cabinet. All three water-passing test stations are located in the water tank.

[0009] As a preferred embodiment, the support platform is provided with an extension platform corresponding to both the loading station and the dry-burning test station. The fixtures of both the loading station and the dry-burning test station are located above the extension platform. The pushing device corresponding to the loading station can push the fixture to the bottom of the extension platform, and the pushing device corresponding to the dry-burning test station can push the fixture out of the extension platform. The first transfer mechanism drives the fixture to move at the bottom of the extension platform.

[0010] As a preferred embodiment, the second transfer mechanism includes a first lifting drive device and a first docking block connected to the bottom of the first lifting drive device. The pusher device corresponding to the dry burning test station can push the connector of the fixture from the extension platform to the first docking block. The first docking block is provided with a first push cylinder, which can unload the fixture from the first docking block to the buffer station.

[0011] As a preferred embodiment, the third transfer mechanism includes a second lifting drive device and a lifting base connected to the second lifting drive device. The clamping station is located at the top of the lifting base, and a second docking block is provided at the bottom of the lifting base. The fixture distribution mechanism can load the fixture connector from the buffer station into the second docking block. A second pushing cylinder is provided on the second docking block, and the second pushing cylinder can unload the fixture from the second docking block into the fixture circulation track.

[0012] As a preferred embodiment, the fixture distribution mechanism includes a first lateral moving device and a first longitudinal moving device disposed on the first lateral moving device. The first longitudinal moving device is provided with a third docking block. The third docking block is provided with a clamping cylinder for pressing the connector of the fixture into the third docking block and a third pushing cylinder for unloading the fixture into the third transfer mechanism.

[0013] As a preferred embodiment, the buffer station is provided with a first placement slot and a second placement slot respectively corresponding to the dry burning test station and the water immersion test station, and the third docking block can transfer the fixture on the first placement slot to the second placement slot.

[0014] As a preferred embodiment, the fourth transfer mechanism includes a second lateral moving device, a second longitudinal moving device disposed on the second lateral moving device, a third lifting drive device disposed on the second longitudinal moving device, and a clamping cylinder disposed on the third lifting drive device. The clamping cylinder can unload the heating tube on the fixture at the unloading station to the framing station.

[0015] As a preferred embodiment, the top of the support platform is provided with a fifth transfer mechanism, which is used to unload the fixture from the third transfer mechanism into the fixture circulation track. The fifth transfer mechanism includes a third longitudinal moving device and a rotary drive device disposed on the third longitudinal moving device. A fourth docking block is connected to the rotary drive device, and a fourth push cylinder is disposed on the fourth docking block.

[0016] As a preferred embodiment, the conductive socket is rotatably disposed in the mounting plate, the bottom of the conductive socket is fixedly connected to the metal clamping arm, and a torsion spring is provided on the outer periphery of the conductive socket, one end of the torsion spring is fixed to the conductive socket, and the other end of the torsion spring is fixed to the mounting plate; The linkage assembly includes a pusher that is movably mounted on the mounting plate and two push-receiving parts respectively mounted on two metal clamping arms. A reset spring is provided between the pusher and the mounting plate to drive the pusher to return to its upward position. The pusher is located between the two push-receiving parts. Pushing surfaces for spreading the two push-receiving parts are provided on both sides of the pusher. The clamp drives the pusher to move downward through the pressing part.

[0017] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution: The main feature is the integration of dry-burning and water-passing tests onto a single device by incorporating a dry-burning test station and multiple water-passing test stations, along with a buffer station. This results in a more compact overall structure. The buffer station effectively utilizes the waiting time during water-passing tests, allowing for continuous dry-burning testing and improving testing efficiency. Furthermore, a fixture recycling mechanism ensures automatic fixture reuse, guaranteeing normal device operation. The clamping assembly includes two openable metal clamping arms, each connected to a conductive socket. The device is equipped with a telescopic rod and a second drive unit that drives the telescopic rod to extend and retract. The telescopic rods of the clamps at the loading station, dry-burning test station, third transfer mechanism, and unloading station are all connected to the pressing part of the drive linkage component. The telescopic rods of the clamps at the dry-burning test station and the third transfer mechanism are also connected to conductive posts that cooperate with conductive sockets, so that the metal clamping arms can automatically open and close and be energized, thereby facilitating the loading, unloading, and energizing of the heating tubes. The structure is ingeniously designed. In addition, the setting of the framing station and the fourth transfer mechanism can realize the automatic framing of the heating tubes, eliminating the need for manual unloading and framing, and the overall degree of automation is high.

[0018] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a perspective view of a preferred embodiment of the present invention (excluding the casing). Figure 2 This is a perspective view (excluding the casing) of a preferred embodiment of the present invention. Figure 3 This is a partial assembly diagram of a preferred embodiment of the present invention; Figure 4 This is a partial assembly diagram from another perspective of a preferred embodiment of the present invention; Figure 5 This is a schematic diagram of the fixture and jig according to a preferred embodiment of the present invention; Figure 6 This is a three-dimensional schematic diagram (including the machine cover) of a preferred embodiment of the present invention.

[0020] Explanation of reference numerals in the attached diagram: 10. Support platform; 11. Server rack; 12. Sink; 13. Machine cover; 14. Extension platform; 101. Loading station; 102. Dry-burning test station; 103. Cache station; 104. Water immersion test station; 105. Material unloading station; 106. Framing station; 107. First placement slot; 108. Second placement slot; 20. Fixture circulation mechanism; 21. Fixture circulation track; 22. First drive device; 30. Pushing device; 40. First transfer mechanism; 50. Second transfer mechanism; 51. First lifting drive device; 52. First docking block; 53. First pushing cylinder; 60. Third transfer mechanism; 61. Second lifting drive device; 62. Lifting seat; 63. Second docking block; 64. Second push cylinder; 601. Clamping station; 70. Fixture distribution mechanism; 71. First lateral movement device; 72. First longitudinal moving device; 73. Third docking block; 74. Clamping cylinder; 80. Fourth transfer mechanism; 81. Second lateral moving device; 82. Second longitudinal moving device; 83. Third lifting drive device; 84. Clamping cylinder; 90. Jig; 91. Mounting plate; 92. Clamping assembly; 921. Metal clamping arm; 93. Linkage components; 931. Pushing components; 932. Pushing part; 933. Return spring; 934. Push surface; 94. Conductive socket; 95. Torsion spring; 901. Connector; 100. Fixture; 1001. Second drive unit. Detailed Implementation

[0021] First, it should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Please refer to Figures 1 to 6 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a support platform 10, a fixture circulation mechanism 20, two pusher devices 30, a first transfer mechanism 40, a second transfer mechanism 50, a third transfer mechanism 60, a fixture distribution mechanism 70, a fourth transfer mechanism 80, a fixture 90, and a clamp 100.

[0023] The support platform 10 is mounted on a cabinet 11. The support platform 10 is provided with a loading station 101, a dry burning test station 102, a buffer station 103, a water-passing test station 104, and a unloading station 105. The buffer station 103 is mounted on the top of the support platform 10. There are multiple water-passing test stations 104. The cabinet 11 is provided with a framing station 106 on the side corresponding to the unloading station 105. The water-passing test station 104 has a water-passing test duration that is three times longer than the dry-burning test duration of the dry-burning test station 102. Accordingly, there are three water-passing test stations 104. A water tank 12 is provided on the cabinet 11. All three water-passing test stations 104 are located in the water tank 12. A cover 13 is provided on the cabinet 11, and the support platform 10 is located inside the cover 13.

[0024] The fixture circulation mechanism 20 is located at the bottom of the support platform 10. The fixture circulation mechanism 20 includes a fixture circulation track 21 and a first driving device 22 for driving the fixture 90 to circulate on the fixture circulation track 21. The fixture circulation track 21 is provided with openings corresponding to the loading station 101, the dry burning test station 102, and the water immersion test station 104. The loading station 101 and the dry burning test station 102 are located on the outside of the fixture circulation track 21. Specifically, the support platform 10 is provided with an extension platform 14 corresponding to the loading station 101 and the dry burning test station 102. The clamps 100 of the loading station 101 and the dry burning test station 102 are both located above the extension platform 14. The pushing device 30 corresponding to the loading station 101 can push the jig 90 to the bottom of the extension platform 14, and the pushing device 30 corresponding to the dry burning test station 102 can push the jig 90 out of the extension platform 14. The first transfer mechanism 40 drives the jig 90 to move at the bottom of the extension platform 14.

[0025] The first drive device 22 can be a chain and sprocket, with the sprocket driven by a motor to rotate. The sprocket drives the chain to circulate in the fixture's circular track 21. A push rod is provided on the chain to move the connector 901 of the fixture 90. Alternatively, the first drive device 22 can be a gear-driven synchronous belt, with a push rod provided on the synchronous belt.

[0026] Both pusher devices 30 are located inside the jig circulation track 21 and are respectively set for the loading station 101 and the dry burning test station 102. The pusher device 30 is used to push the jig 90 out of the opening. The pusher device 30 includes a push rod and a cylinder for driving the push rod to push out.

[0027] The first transfer mechanism 40 is used to transport the fixture 90 from the loading station 101 to the dry burning test station 102. Specifically, the first transfer mechanism includes a cylinder, a push plate connected to the cylinder, a slide rail on the support platform 10, the push plate being slidably connected to the slide rail, and an extension platform 14 having a sliding rail for the connector 901 of the fixture 90 to move in, the push plate being able to extend into the sliding rail.

[0028] The second transfer mechanism 50 is used to transport the fixture 90 from the dry burning test station 102 to the buffer station 103. Specifically, the second transfer mechanism 50 includes a first lifting drive device 51 and a first docking block 52 connected to the bottom of the first lifting drive device 51. The pusher device 30 corresponding to the dry burning test station 102 can push the connector 901 of the fixture 90 from the extension platform 14 into the first docking block 52. The first docking block 52 is provided with a first push cylinder 53, which can unload the fixture 90 from the first docking block 52 to the buffer station 103.

[0029] The third transfer mechanism 60 is used to transport the fixture 90 from the buffer station 103 to the water-passing test station 104, and to transport the fixture 90 from the water-passing test station 104 to the fixture circulation track 21. The third transfer mechanism 60 is provided with multiple clamping stations 601 corresponding to the water-passing test station 104; specifically, there are three clamping stations 601. The third transfer mechanism 60 includes a second lifting drive device 61 and a lifting seat 62 connected to the second lifting drive device 61. The clamping station 601 is located on the top of the lifting seat 62. A second docking block 63 is provided at the bottom of the lifting seat 62. The fixture distribution mechanism 70 can load the connector 901 of the fixture 90 from the buffer station 103 into the second docking block 63. A second pushing cylinder 64 is provided on the second docking block 63. The second pushing cylinder 64 can unload the fixture 90 from the second docking block 63 into the fixture circulation track 21.

[0030] The fixture distribution mechanism 70 is used to transport the fixture 90 from the buffer station 103 to the third transfer mechanism 60. Specifically, the fixture distribution mechanism 70 includes a first lateral moving device 71 and a first longitudinal moving device 72 disposed on the first lateral moving device 71. The first longitudinal moving device 72 is provided with a third docking block 73. The third docking block is provided with a clamping cylinder 74 for pressing the connector 901 of the fixture 90 into the third docking block 73 and a third pushing cylinder (not shown in the figure) for unloading the fixture 90 to the third transfer mechanism 60. The buffer station 103 is provided with a first placement slot 107 and a second placement slot 108 corresponding to the dry burning test station 102 and the water immersion test station 104, respectively. The third docking block can transfer the fixture 90 on the first placement slot 107 to the second placement slot 108, so as to better buffer the fixture 90.

[0031] The fourth transfer mechanism 80 is used to transport the jig 90 from the unloading station 105 to the framing station 106. Specifically, the fourth transfer mechanism 80 includes a second lateral moving device 81, a second longitudinal moving device 82 disposed on the second lateral moving device 81, a third lifting drive device 83 disposed on the second longitudinal moving device 82, and a clamping cylinder 84 disposed on the third lifting drive device 83. The clamping cylinder 84 can unload the heating tube on the jig 90 at the unloading station 105 to the framing station 106.

[0032] The top of the support platform 10 is provided with a fifth transfer mechanism (not shown in the figure). The fifth transfer mechanism is used to unload the jig 90 from the third transfer mechanism into the jig circulation track 21. The fifth transfer mechanism includes a third longitudinal moving device and a rotary drive device disposed on the third longitudinal moving device. A fourth docking block is connected to the rotary drive device, and a fourth push cylinder is disposed on the fourth docking block.

[0033] The fixture 90 includes a mounting plate 91, multiple sets of clamping assemblies 92 disposed on the mounting plate 91, a linkage assembly 93 for linking the opening and closing of the clamping assemblies 92, and a conductive socket 94 connected to the clamping assemblies 92. The mounting plate 91 is provided with a connector 901 for transfer. The clamping assembly 92 includes two openable and closable metal clamping arms 921, each connected to the conductive socket 94. Clamps 100 are provided at the loading station 101, the dry-burning test station 102, the clamping station 601, and the unloading station 105. The fixture 100 is equipped with a telescopic rod and a second drive device 1001 for driving the telescopic rod to extend and retract. The telescopic rods of the fixtures 100 on the loading station 101, the dry burning test station 102, the clamping station 601, and the unloading station 105 are all connected to the pressing part (not shown in the figure) of the drive linkage assembly 93. The telescopic rods of the fixtures 100 on the dry burning test station 102 and the clamping station 601 are also connected to conductive plugs (not shown in the figure) that are conductively engaged with the conductive socket 94. The pressing part and the conductive plug can be set together on a linkage block and the telescopic rod is connected through the linkage block.

[0034] Specifically, the conductive socket 94 is rotatably disposed in the mounting plate 91, the bottom of the conductive socket 94 is fixedly connected to the metal clamp arm 921, and a torsion spring 95 is disposed on the outer periphery of the conductive socket 94. One end of the torsion spring 95 is fixed to the conductive socket 94, and the other end of the torsion spring is fixed to the mounting plate 91. The linkage component 93 includes a pusher 931 that is movably mounted on the mounting plate 91 and two push-receiving parts 932 respectively mounted on two metal clamping arms 921. A return spring 933 is provided between the pusher 931 and the mounting plate 91 to drive the pusher 931 to return to its upward position. The pusher 931 is located between the two push-receiving parts 932. Pushing surfaces 934 for spreading the two push-receiving parts 932 are provided on both sides of the pusher 931. The clamp 100 drives the pusher 931 to move downward through the pressing part.

[0035] In this embodiment, both the lateral movement device and the longitudinal movement device can be servo electric cylinders, and the lifting drive device can be a pneumatic cylinder or a servo electric cylinder. The drive technology is prior art and will not be described in detail here.

[0036] The working process of this embodiment is described in detail below: The first step is to push the jig 90 to the loading station 101 by the pushing device 30, and the clamp 100 drives the two metal clamping arms 921 of the jig 90 to clamp the heating tube onto the jig 90. In the second step, the first transfer mechanism 40 transports the fixture 90 from the loading station 101 to the dry burning test station 102. The clamp 100 drives the conductive plug to be inserted into the conductive socket 94 to energize the heating tube. Observe whether sparks are generated at the electrodes of the heating tube and whether the heating tube will crack. This can be done manually or by visual equipment. Defective products are then removed. Third step, the second transfer mechanism 50 transports the fixture 90 from the dry burning test station 102 to the buffer station 103; The fourth step is that the fixture distribution mechanism 70 places the fixture 90 in the buffer station 103 and then transports the fixture 90 from the buffer station 103 to the third transfer mechanism 60. Fifth, the third transfer mechanism 60 transports the fixture 90 from the fixture distribution mechanism 70 to the water-testing station 104. Then, the clamp 100 drives the conductive pin to insert into the conductive socket 94 to energize the heating element. After energizing, observe whether the heating element can work normally in the water, whether sparks are generated at the electrodes of the heating element, and whether the heating element will crack. This can be done manually or by using visual equipment. Defective products are then removed. The sixth step is to transport the fixture 90 from the water-testing station 104 to the fixture circulation track 21 via the fifth transfer mechanism, and the fixture circulation track 21 will transport the fixture 90 to the unloading station 105. In the seventh step, the fourth transfer mechanism 80 transports the fixture 90 from the unloading station 105 to the framing station 106, and then the fixture 90 is circulated to the loading station 101.

[0037] The key design focus of this invention is: The main feature is the integration of dry-burning and water-passing tests onto a single device by incorporating a dry-burning test station and multiple water-passing test stations, along with a buffer station. This results in a more compact overall structure. The buffer station effectively utilizes the waiting time during water-passing tests, allowing for continuous dry-burning testing and improving testing efficiency. Furthermore, a fixture recycling mechanism ensures automatic fixture reuse, guaranteeing normal device operation. The clamping assembly includes two openable metal clamping arms, each connected to a conductive socket. The device is equipped with a telescopic rod and a second drive unit that drives the telescopic rod to extend and retract. The telescopic rods of the clamps at the loading station, dry-burning test station, third transfer mechanism, and unloading station are all connected to the pressing part of the drive linkage component. The telescopic rods of the clamps at the dry-burning test station and the third transfer mechanism are also connected to conductive posts that cooperate with conductive sockets, so that the metal clamping arms can automatically open and close and be energized, thereby facilitating the loading, unloading, and energizing of the heating tubes. The structure is ingeniously designed. In addition, the setting of the framing station and the fourth transfer mechanism can realize the automatic framing of the heating tubes, eliminating the need for manual unloading and framing, and the overall degree of automation is high.

[0038] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A device for testing the dry-burning and water-passing properties of a heating element, characterized in that, include: A support platform is mounted on a cabinet. The support platform is equipped with a feeding station, a dry burning test station, a buffer station, a water immersion test station, and a feeding station. The buffer station is mounted on the top of the support platform. There are multiple water immersion test stations. A framing station is provided on the side of the cabinet corresponding to the feeding station. A fixture circulation mechanism is provided at the bottom of the support platform. The fixture circulation mechanism includes a fixture circulation track and a first driving device for driving the fixture to circulate on the fixture circulation track. The fixture circulation track is provided with openings corresponding to the loading station, the dry burning test station and the water immersion test station. The loading station and the dry burning test station are located on the outside of the fixture circulation track. Two pushing devices are provided, both of which are located inside the jig circulation track and are respectively set for the loading station and the dry burning test station. The pushing devices are used to push the jig out of the opening. The first transfer mechanism is used to transport the fixture from the loading station to the dry burning test station; The second transfer mechanism is used to transport the fixture from the dry burning test station to the buffer station; The third transfer mechanism is used to transport the fixture from the buffer station to the water-passing test station, and to transport the fixture from the water-passing test station to the fixture circulation track. The third transfer mechanism is provided with multiple clamping stations corresponding to the water-passing test station. A fixture distribution mechanism is used to transport fixtures from the buffer station to the third transfer mechanism; The fourth transfer mechanism is used to transport the fixture from the unloading station to the framing station; The fixture includes a mounting plate, multiple clamping assemblies disposed on the mounting plate, a linkage assembly for linking the opening and closing of the clamping assemblies, and a conductive socket connected to the clamping assemblies. The mounting plate is provided with a connector for transfer. The clamping assembly includes two openable and closable metal clamping arms, and both metal clamping arms are connected to the conductive socket. The fixtures are provided at the loading station, dry burning test station, clamping station, and unloading station. Each fixture is equipped with a telescopic rod and a second driving device for extending and retracting the telescopic rod. The telescopic rods of the fixtures at the loading station, dry burning test station, clamping station, and unloading station are all connected to the pressing part of the driving linkage assembly. The telescopic rods of the fixtures at the dry burning test station and the clamping station are also connected to conductive posts that are conductively engaged with conductive sockets.

2. The dry-burning and water-passing test device for a heating element according to claim 1, characterized in that: The water-passing test duration of the water-passing test station is three times the dry-burning test duration of the dry-burning test station. Accordingly, there are three water-passing test stations, and a water tank is provided on the cabinet. All three water-passing test stations are located in the water tank.

3. The dry-burning and water-passing test device for a heating element according to claim 1, characterized in that: The support platform is provided with an extension platform corresponding to the loading station and the dry burning test station. The fixtures of the loading station and the dry burning test station are located above the extension platform. The pushing device corresponding to the loading station can push the fixture to the bottom of the extension platform, and the pushing device corresponding to the dry burning test station can push the fixture out of the extension platform. The first transfer mechanism drives the fixture to move at the bottom of the extension platform.

4. The dry-burning and water-passing test device for a heating element according to claim 1, characterized in that: The second transfer mechanism includes a first lifting drive device and a first docking block connected to the bottom of the first lifting drive device. The pusher device corresponding to the dry burning test station can push the connector of the fixture from the extension platform to the first docking block. The first docking block is provided with a first push cylinder, which can unload the fixture from the first docking block to the buffer station.

5. The dry-burning and water-passing test device for a heating element according to claim 1, characterized in that: The third transfer mechanism includes a second lifting drive device and a lifting base connected to the second lifting drive device. The clamping station is located on the top of the lifting base, and a second docking block is located at the bottom of the lifting base. The fixture distribution mechanism can load the fixture connector from the buffer station to the second docking block. A second pushing cylinder is located on the second docking block, and the second pushing cylinder can unload the fixture from the second docking block into the fixture circulation track.

6. The dry-burning and water-passing test device for a heating element according to claim 1, characterized in that: The fixture distribution mechanism includes a first lateral moving device and a first longitudinal moving device disposed on the first lateral moving device. A third docking block is disposed on the first longitudinal moving device. A clamping cylinder for pressing the connector of the fixture into the third docking block and a third pushing cylinder for unloading the fixture into the third transfer mechanism are disposed on the third docking block.

7. The dry-burning and water-passing test device for a heating element according to claim 6, characterized in that: The buffer station is provided with a first placement slot and a second placement slot respectively for the dry burning test station and the water immersion test station, and the third docking block can transfer the fixture on the first placement slot to the second placement slot.

8. The dry-burning and water-passing test device for a heating element according to claim 1, characterized in that: The fourth transfer mechanism includes a second lateral moving device, a second longitudinal moving device disposed on the second lateral moving device, a third lifting drive device disposed on the second longitudinal moving device, and a clamping cylinder disposed on the third lifting drive device. The clamping cylinder can unload the heating tube on the fixture at the unloading station to the framing station.

9. The dry-burning and water-passing test device for a heating element according to claim 1, characterized in that: The top of the support platform is provided with a fifth transfer mechanism, which is used to unload the fixture from the third transfer mechanism into the fixture circulation track. The fifth transfer mechanism includes a third longitudinal moving device and a rotary drive device disposed on the third longitudinal moving device. A fourth docking block is connected to the rotary drive device, and a fourth push cylinder is disposed on the fourth docking block.

10. The dry-burning and water-passing test device for a heating element according to claim 1, characterized in that: The conductive socket is rotatably mounted in the mounting plate. The bottom of the conductive socket is fixedly connected to a metal clamping arm. A torsion spring is provided on the outer periphery of the conductive socket. One end of the torsion spring is fixed to the conductive socket, and the other end of the torsion spring is fixed to the mounting plate. The linkage assembly includes a pusher that is movably mounted on the mounting plate and two push-receiving parts respectively mounted on two metal clamping arms. A reset spring is provided between the pusher and the mounting plate to drive the pusher to return to its upward position. The pusher is located between the two push-receiving parts. Pushing surfaces for spreading the two push-receiving parts are provided on both sides of the pusher. The clamp drives the pusher to move downward through the pressing part.

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