Heating and stirring device

Abstract

A heating and stirring device comprises: a liquid storage assembly, which comprises a liquid storage cavity; the temperature control assembly is used for heating the liquid contained in the liquid storage cavity to a preset temperature; and the flow speed driving assembly is used for driving the liquid contained in the liquid storage cavity to reach the preset flow speed. The temperature control assembly can provide the liquid temperature when the circuit board is detected; the flow velocity driving assembly can provide the liquid flow velocity when the circuit board is detected so as to meet the environmental conditions when the circuit board is subjected to immersion liquid detection.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board detection, in particular to a heating and stirring device. Background Art

[0002] Circuit boards are an integral component of electronic devices, primarily used to achieve electrical connections between electronic components. Circuit boards can be implemented in complex circuit designs using single-sided, double-sided, or multi-layer forms. Single-sided boards offer simpler wiring and are suitable for simple circuit designs; double-sided boards offer more wiring options and are suitable for more complex circuits. Multi-layer boards, by increasing the number of wiring layers, offer greater design flexibility and increased complexity, and are commonly used in high-performance devices.

[0003] Circuit board materials and technologies are constantly evolving. Traditionally, PCBs used FR-4 material, but technological advancements have led to the emergence of new types of circuit boards, such as ceramic PCBs and flexible printed circuits (FPCs). FPCs offer high reliability, high wiring density, light weight, thinness, and excellent flexibility, making them suitable for applications requiring a high degree of flexibility.

[0004] However, there are still many problems in the process of performance testing of circuit boards in the prior art. Utility Model Content

[0005] The problem solved by the utility model is to provide a heating and stirring device to meet the environmental conditions during liquid immersion testing of a circuit board.

[0006] In order to solve the above problems, the technical solution of the present invention provides a heating and stirring device, including: a liquid storage component, which includes a liquid storage cavity; a temperature control component, which is used to heat the liquid contained in the liquid storage cavity to a preset temperature; and a flow rate drive component, which is used to drive the liquid contained in the liquid storage cavity to reach a preset flow rate.

[0007] Optionally, the liquid storage assembly includes: a liquid storage barrel having the liquid storage cavity; and a sealing cover detachably connected to the liquid storage barrel.

[0008] Optionally, the sealing cover includes: a cover body; and a stabilizing member, wherein the stabilizing member is fixedly connected to the cover body.

[0009] Optionally, the sealing cover further includes: an inner groove ring and an outer groove ring arranged concentrically, the inner groove ring and the outer groove ring being fixedly connected to the cover body respectively, and a sealing groove being formed between the inner groove ring and the outer groove ring; wherein, when the cover is buckled, the opening edge of the liquid storage barrel is located in the sealing groove.

[0010] Optionally, the sealing cover further includes: a rubber ring, which is arranged in the sealing groove.

[0011] Optionally, the temperature control component includes: a plurality of heating elements, which are arranged in the liquid storage cavity and extend through the liquid storage component to the outside; a temperature measuring element, which is arranged in the liquid storage cavity and is used to detect the temperature of the liquid; a controller, which is arranged outside the liquid storage component, and the heating elements and the temperature measuring elements are electrically connected to the controller respectively; wherein, when the temperature measuring element detects that the liquid temperature reaches the preset temperature, the controller controls the heating element to stop heating; when the temperature measuring element detects that the liquid temperature is lower than the preset temperature, the controller controls the heating element to heat until the liquid temperature reaches the preset temperature.

[0012] Optionally, it also includes: a carrying tool, which is used to load and fix several circuit boards; wherein, during testing, the carrying tool is placed in the liquid storage cavity, and the liquid immerses the circuit boards; the carrying tool includes: a charged carrying tool and a non-charged carrying tool.

[0013] Optionally, the live load-bearing tooling includes: a carrier, a plurality of carrier slots arranged in a vertical direction are opened in the carrier, the carrier slots pass through the carrier, and the carrier slots are arranged in the same shape as the circuit board; wherein, the circuit board is placed vertically in the carrier slots, and when the circuit board is placed in the carrier slots, the surface of the circuit board is exposed on both opposite sides of the carrier; a plurality of limiting buckles, the carrier slots are located between adjacent limiting buckles; wherein, when the circuit board is limited in the carrier slots, the limiting buckles rotate to block the circuit board.

[0014] Optionally, the limit buckle provides single-sided support for the circuit board; part of the edge of the supporting slot is a step edge; wherein, when the circuit board is limited in the supporting slot, the limit buckle rotates to support one side of the circuit board, and the step edge is used to support the other side of the circuit board.

[0015] Optionally, the limiting buckle provides double-sided support for the circuit board.

[0016] Optionally, the non-powered load-bearing tooling includes: a plurality of connecting plates arranged in parallel along the vertical direction; a plurality of limit bars, the limit bars are fixedly connected to each of the connecting plates, and the limit bars are provided with a plurality of limit notches along the vertical direction; wherein, the circuit board is horizontally placed in the limit notches corresponding to each of the limit bars; a movable bar, the movable bar can pass through each of the connecting plates along the vertical direction; wherein, when the movable bar passes through each of the connecting plates along the vertical direction, the circuit board is blocked.

[0017] Optionally, the flow rate drive assembly includes: a stirring part, and a driving part connected to the stirring part; wherein, the stirring part includes: a stirring shaft; wherein, during stirring, one end of the stirring shaft is located in the liquid storage cavity, and the other end of the stirring shaft extends to the outside of the liquid storage assembly and is detachably connected to the driving part; a plurality of stirring paddles, and the stirring paddles are fixedly connected to the stirring shaft.

[0018] Compared with the prior art, the technical solution of the utility model has the following advantages:

[0019] The heating and stirring device of the technical solution of the present utility model can provide the liquid temperature when testing the circuit board through the temperature control component; and can provide the liquid flow rate when testing the circuit board through the flow rate driving component, so as to meet the environmental conditions and operating requirements of the coated circuit board during immersion testing.

[0020] Furthermore, the sealing cover includes a cover body and a stabilizing member fixedly connected to the cover body. Since the liquid is constantly heated and cooled, the cover body is susceptible to deformation, which in turn affects the sealing performance of the cover body. Therefore, the addition of the stabilizing member effectively prevents deformation of the cover body, thereby ensuring the tightness of the seal between the sealing cover and the liquid storage barrel.

[0021] Furthermore, the sealing cover further includes an inner groove ring and an outer groove ring arranged concentrically, each of which is fixedly connected to the cover body, with a sealing groove formed between the inner and outer groove rings. When the cover is closed, the opening edge of the liquid storage barrel is located within the sealing groove. The addition of the sealing groove further enhances the tightness of the seal between the sealing cover and the liquid storage barrel.

[0022] Furthermore, the sealing cover further comprises: a rubber ring, which is arranged in the sealing groove. The addition of the rubber ring can further improve the sealing performance between the sealing cover and the liquid storage barrel.

[0023] Furthermore, the device also includes a supporting fixture for loading and securing multiple circuit boards. During testing, the supporting fixture is placed in the liquid storage chamber, with the liquid submerging the circuit boards. The supporting fixture includes a powered supporting fixture and a non-powered supporting fixture. The supporting fixture provides excellent support for the circuit boards, meeting the requirements of live circuit board testing. Furthermore, the supporting fixture can simultaneously secure and support multiple circuit boards. When samples need to be removed, simply removing the supporting fixture allows for easy removal of multiple circuit boards, improving efficiency.

[0024] Furthermore, the live load fixture includes: a carrier, wherein a plurality of vertically arranged load slots are defined within the carrier, the load slots extending through the carrier and conforming to the circuit board; wherein the circuit board is vertically placed in the load slots, and when the circuit board is placed in the load slots, the surface of the circuit board is exposed on both opposite sides of the carrier; and a plurality of position-limiting buckles, wherein the load slots are located between adjacent position-limiting buckles; wherein when the circuit board is limited in the load slots, the position-limiting buckles rotate to stop the circuit board. The live load fixture can simultaneously expose both sides of the circuit board to facilitate circuit connection during live testing.

[0025] Furthermore, the non-powered load-bearing fixture includes: a plurality of connecting plates arranged in parallel along the vertical direction; a plurality of limit bars, each of which is fixedly connected to each of the connecting plates and has a plurality of limit notches formed in the vertical direction; wherein the circuit board is horizontally placed in the limit notches corresponding to each of the limit bars; and a movable bar, each of which can vertically penetrate each of the connecting plates; wherein, after the movable bar vertically penetrates each of the connecting plates, it blocks the circuit board. When the circuit board is being tested without power, there is no need to consider the lead problem. Therefore, by placing the plurality of circuit boards horizontally in the non-powered load-bearing fixture, the number of circuit boards that can be stacked can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is an exploded view of the overall structure of the heating and stirring device according to an embodiment of the present utility model;

[0027] Figure 2 This is a schematic structural diagram of a liquid storage barrel in a heating and stirring device according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic structural diagram of a sealing cover in a heating and stirring device according to an embodiment of the present invention;

[0029] Figure 4 This is a bottom view of the sealing cover in the heating and stirring device according to an embodiment of the present utility model;

[0030] Figure 5 This is a top view of the liquid storage barrel in the heating and stirring device of an embodiment of the utility model;

[0031] Figure 6 This is a schematic structural diagram of the live load-bearing tooling in the heating and stirring device according to an embodiment of the present utility model;

[0032] Figure 7 This is a schematic structural diagram of a non-electric load-bearing tool in a heating and stirring device according to an embodiment of the present utility model;

[0033] Figure 8This is a schematic structural diagram of the liquid storage barrel, flow rate drive assembly and carrying tooling in the heating and stirring device of an embodiment of the utility model;

[0034] Figure 9 It is a structural schematic diagram of the flow rate drive component in the heating and stirring device of an embodiment of the utility model. DETAILED DESCRIPTION

[0035] As described in the background art, there are still many problems in the performance testing of circuit boards in the prior art, which will be described in detail below.

[0036] In many cases, in order to improve the service life and stability of the substrate, the substrate can be coated to form a protective film layer on the substrate to protect the substrate from damage caused by moisture, dust, chemical agents or extreme temperatures.

[0037] Currently, the protective film layer on the circuit boards of automotive controllers is required to be resistant to engine oil corrosion. This requires simulating real-world scenarios to test the film's oil resistance. The testing equipment must meet the following requirements: it must be able to heat the engine oil to a set temperature (approximately 150°C) and maintain a constant stirring speed to maintain the liquid flow at a predetermined rate. Traditional equipment such as dosing tanks, mixing tanks, and reactors cannot simultaneously meet these requirements.

[0038] On this basis, the utility model provides a heating and stirring device, which can provide the liquid temperature when testing the circuit board through the temperature control component; and can provide the liquid flow rate when testing the circuit board through the flow rate driving component to meet the environmental conditions of the coated circuit board during immersion testing.

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] Figure 1 This is an exploded view of the overall structure of the heating and stirring device according to an embodiment of the present utility model; Figure 2 This is a schematic structural diagram of a liquid storage barrel in a heating and stirring device according to an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a sealing cover in a heating and stirring device according to an embodiment of the present invention; Figure 4 This is a bottom view of the sealing cover in the heating and stirring device according to an embodiment of the present utility model; Figure 5 This is a top view of the liquid storage barrel in the heating and stirring device of an embodiment of the utility model; Figure 6 This is a schematic structural diagram of the live load-bearing tooling in the heating and stirring device according to an embodiment of the present utility model;

[0041] Figure 7 This is a schematic structural diagram of a non-electric load-bearing tool in a heating and stirring device according to an embodiment of the present utility model; Figure 8This is a schematic structural diagram of the liquid storage barrel, flow rate drive assembly and carrying tooling in the heating and stirring device of an embodiment of the utility model; Figure 9 It is a structural schematic diagram of the flow rate drive component in the heating and stirring device of an embodiment of the utility model.

[0042] Please refer to Figure 1 A heating and stirring device includes: a liquid storage component 10, the liquid storage component 10 includes a liquid storage chamber 10a; a temperature control component 20, the temperature control component 20 is used to heat the liquid contained in the liquid storage chamber 10a to a preset temperature; and a flow rate drive component 30, the flow rate drive component 30 is used to stir the liquid contained in the liquid storage chamber 10a so that it has a preset flow rate.

[0043] The temperature control component 20 can provide the liquid temperature when testing the circuit board; the flow rate driving component 30 can provide the liquid flow rate when testing the circuit board to meet the environmental conditions when testing the circuit board.

[0044] In this embodiment, the circuit board is a PCBA board, and the liquid is engine oil. The surface of the circuit board is coated with a protective film. By immersing the PCBA board in engine oil, the actual use environment of the PCBA board is simulated to test the performance of the protective film.

[0045] Please refer to Figure 2 and Figure 3 In this embodiment, the liquid storage assembly 10 includes: a liquid storage barrel 101, the liquid storage barrel 101 having the liquid storage cavity 10a; and a sealing cover 102 detachably connected to the liquid storage barrel 101.

[0046] Please continue to refer to Figure 2 In this embodiment, a drain valve body 103 is provided at the bottom of the liquid storage barrel 101 to facilitate the discharge of the liquid.

[0047] Please continue to refer to Figure 2 In this embodiment, the side wall of the liquid storage barrel 101 is a single-layer structure, and the outer wall of the liquid storage barrel 101 is wrapped with an insulation layer 104. The single-layer structure of the liquid storage barrel 101 can effectively reduce product costs.

[0048] In other embodiments, the side wall of the liquid storage barrel 101 may also be a double-layer hollow structure. The double-layer hollow structure can achieve a good heat preservation effect by utilizing the hollow layer, so the heat preservation layer 104 wrapped around the outer wall of the liquid storage barrel 101 can be omitted.

[0049] Please continue to refer to Figure 3 Combined with reference Figure 4In this embodiment, the sealing cover 102 includes a cover body 1021 and a stabilizing member 1022, which is fixedly connected to the cover body 1021. Since the liquid is constantly heated and cooled, the cover body 1021 is easily deformed, thereby affecting the sealing performance of the cover body 1021. Therefore, the addition of the stabilizing member 1022 can effectively prevent the deformation of the cover body 1021, thereby ensuring the tightness of the seal between the sealing cover 102 and the liquid storage barrel 101.

[0050] Specifically, the stabilizing member 1022 may be in a triangular structure. By screwing the stabilizing member 1022 and the cover 1021 together, the triangular stabilizing member 1022 may be inscribed in the circular cover 1021 .

[0051] Please continue to refer to Figure 4 In this embodiment, the sealing cover 102 further includes an inner groove ring 1023 and an outer groove ring 1024, which are concentrically arranged. The inner groove ring 1023 and the outer groove ring 1024 are respectively fixedly connected to the cover body 1021, and a sealing groove 1025 is formed between the inner groove ring 1023 and the outer groove ring 1024. When the cover is buckled, the opening edge of the liquid storage barrel 101 is located in the sealing groove 1025. The addition of the sealing groove 1025 can further improve the sealing performance between the sealing cover 102 and the liquid storage barrel 101.

[0052] Please continue to refer to Figure 4 In this embodiment, the sealing cover 102 further includes a rubber ring 1026, which is disposed in the sealing groove 1025. The addition of the rubber ring 1026 can further improve the sealing performance between the sealing cover 102 and the liquid storage barrel 101.

[0053] In this embodiment, the liquid storage barrel 101 and the sealing cover 102 are both made of stainless steel, and are both provided with handles (not marked) to facilitate taking the liquid storage barrel 101 and the sealing cover 102 .

[0054] Please continue to refer to Figure 2 Combined with examination Figure 5In this embodiment, the temperature control component 20 includes: a plurality of heating elements 201, wherein the heating elements 201 are arranged in the liquid storage cavity 10a and extend through the liquid storage component 10 to the outside; a temperature measuring element 202, wherein the temperature measuring element 202 is arranged in the liquid storage cavity 10a for detecting the temperature of the liquid; a controller 203, wherein the controller 203 is arranged outside the liquid storage component 10, and the heating elements 201 and the temperature measuring element 202 are electrically connected to the controller 203 respectively; wherein, when the temperature measuring element 202 detects that the liquid temperature reaches the preset temperature, the controller 203 controls the heating element 201 to stop heating; when the temperature measuring element 202 detects that the liquid temperature is lower than the preset temperature, the controller 203 controls the heating element 201 to heat until the liquid temperature reaches the preset temperature.

[0055] Please continue to refer to Figure 5 In this embodiment, the temperature measuring element 202 includes a temperature-controlling couple 2021, which is used to detect whether the liquid temperature has reached the preset temperature and is coordinated with the controller 203; and a plurality of temperature-sensing couples 2022, which are used to detect the liquid temperature. The plurality of temperature-sensing couples 2022 can detect the liquid temperature from multiple angles to ensure uniform temperature distribution.

[0056] Please continue to refer to Figure 5 In this embodiment, a sealing ring 204 is provided at the position where the heating element 201 passes through the liquid storage component 10 to prevent liquid leakage.

[0057] In this embodiment, the sealing ring 204 is made of polytetrafluoroethylene, which has good oil resistance and can be used for a long time without cracking or damage.

[0058] Specifically, the plurality of heating elements 201 can be a group of annular heating elements 201 (a total of three 9KW elements, adjustable as needed). The heating element 201 is fixed to the bottom of the liquid storage barrel 101, and the electrical connection end extends through the bottom of the liquid storage barrel 101 to the outside and is electrically connected to the controller 203. There is one temperature-controlling galvanic couple 2021 (type K is selected, other types can be selected as needed) fixed to the bottom of the liquid storage barrel 101 to detect the temperature of the liquid stored in the liquid storage chamber 10a in real time. The temperature detected by the temperature-controlling galvanic couple 2021 determines whether the controller 203 needs to heat the heating element 201. There are three temperature-sensing galvanic couples 2022, which are respectively fixed to the bottom, middle, and top of the inner wall of the liquid storage barrel 101 to detect the liquid temperature from multiple angles to ensure uniform liquid temperature distribution.

[0059] Please continue to refer to Figure 1 , and combined with reference Figure 6 and Figure 7 In this embodiment, the heating and stirring device further includes: a carrying tool 40, which is used to load and fix a plurality of circuit boards; wherein, during detection, the carrying tool 40 is placed in the liquid storage cavity 10a, and the liquid immerses the circuit board 50.

[0060] The carrying fixture 40 can provide good support for the circuit board 50 to meet the needs of live testing of the circuit board 50. Moreover, the carrying fixture 40 can fix and support several circuit boards 50 at the same time. When it is necessary to take samples, it is only necessary to take the carrying fixture 40 to meet the requirements of taking multiple circuit boards 50, thereby improving the efficiency of taking the circuit boards 50.

[0061] In this embodiment, the carrying fixture 40 includes: a powered carrying fixture 401 and a non-powered carrying fixture 402 , which can meet the fixing requirements of the circuit board 50 during powered and non-powered testing.

[0062] Please continue to refer to Figure 6 In this embodiment, the live load fixture 401 includes: a carrier 4011 having a plurality of vertically arranged load slots 4012 defined therein, the load slots 4012 penetrating the carrier 4011 and conforming to the circuit board 50; wherein the circuit board 50 is vertically placed in the load slots 4012, and when the circuit board 50 is placed in the load slots 4012, the surfaces of the circuit board 50 are exposed on opposite sides of the carrier 4011; and a plurality of position-limiting buckles 4013, wherein the load slots 4012 are located between adjacent position-limiting buckles 4013; wherein when the circuit board 50 is limited in the load slots 4012, the position-limiting buckles 4013 rotate to abut against the circuit board 50. The live load fixture 401 can simultaneously expose both sides of the circuit board 50 to facilitate circuit connection during live testing.

[0063] In this embodiment, the limiting buckle 4013 provides single-sided support for the circuit board 50; part of the edge of the supporting slot 4012 is a step edge; wherein, when the circuit board 50 is limited in the supporting slot 4012, the limiting buckle 4013 rotates to support one side of the circuit board 50, and the step edge is used to support the other side of the circuit board 50.

[0064] In other embodiments, the limiting buckle 4013 may also provide double-sided support for the circuit board 50. When the limiting buckle 4013 provides double-sided support, it is not necessary to design the edge of the bearing slot 4012 as a step edge.

[0065] In this embodiment, the loading slot 4012 includes a main body 4012a for retaining the circuit board 50, and a plurality of latches 4012b disposed at the edges of the main body 4012a and communicating with the main body 4012a. The latches 4012b facilitate removal of the circuit board 50.

[0066] Please continue to refer to Figure 7 In this embodiment, the unpowered load-bearing fixture 402 includes: a plurality of connecting plates 4021 arranged in parallel along a vertical direction; a plurality of limiting bars 4022 fixedly connected to each of the connecting plates 4021, each of the limiting bars 4022 having a plurality of limiting notches 4023 formed along a vertical direction; wherein the circuit board 50 is horizontally placed in the limiting notches 4023 corresponding to each of the limiting bars 4022; and a movable bar 4024 that can vertically penetrate each of the connecting plates 4021; wherein, after the movable bar 4024 vertically penetrates each of the connecting plates 4021, it blocks the circuit board 50. When the circuit board 50 is undergoing unpowered testing, there is no need to consider lead wire issues. Therefore, by placing the plurality of circuit boards 50 horizontally in the unpowered load-bearing fixture 402, the number of circuit boards 50 that can be stacked can be increased.

[0067] It should be noted that, in this embodiment, the number of the charged load-bearing fixtures 401 and the non-charged load-bearing fixtures 402 can be flexibly configured based on demand.

[0068] Please refer to Figure 8 In this embodiment, the heating and stirring device further includes: a tool fixing ring 60, the tool fixing ring 60 is fixedly connected to the liquid storage component 10, and the other end of the supporting tool 40 is detachably connected to the tool fixing ring 60.

[0069] Specifically, a plurality of threaded holes are provided on the tool fixing ring 60 , and the top of the bearing member 4011 in the charged bearing tool 401 and the top of the connecting plate 4021 of the uncharged bearing tool 402 are threadedly connected to the corresponding threaded holes on the tool fixing ring 60 .

[0070] Please continue to refer to Figure 3In this embodiment, the cover 1021 is provided with a plurality of wire outlets 1027 . The wire outlets 1027 correspond to the support fixtures 40 and are used to lead out the connection wires for the live detection of the circuit board 50 . Specifically, the wire outlets 1027 correspond to the live support fixtures 401 . The number of the wire outlets 1027 is determined based on the number of live support fixtures 401 . For example, the number of the wire outlets 1027 can be eight.

[0071] Please continue to refer to Figure 9 In this embodiment, the flow rate drive assembly 30 includes: a stirring portion 301, and a driving portion 302 connected to the stirring portion 301; wherein the stirring portion 301 includes: a stirring shaft 3011; wherein, during stirring, one end of the stirring shaft 3011 is located within the liquid storage chamber 10a, and the other end of the stirring shaft 3011 extends to the outside of the liquid storage assembly 10 and is detachably connected to the driving portion 302; and a plurality of stirring paddles 3012, wherein the stirring paddles 3012 are fixedly connected to the stirring shaft 3011. The stirring paddles 3012 include multiple groups of blades arranged along the axial direction of the stirring shaft 3011, so as to facilitate rapid balancing of the liquid temperature at the top, middle, and bottom positions within the liquid storage chamber 10a.

[0072] In this embodiment, the driving unit 302 is a driving motor.

[0073] Specifically, the stirring paddle 3012 and one end of the stirring shaft 3011 are located in the liquid storage cavity 10a of the liquid storage barrel 101, and the other end of the stirring shaft 3011 passes through the sealing cover 102 (a hole corresponding to the stirring shaft 3011 is provided on the cover body 1021) and extends to the outside to be detachably connected to the drive motor (specifically, it can be adapted to the corresponding coupling 303 and locked to the drive motor by a set screw).

[0074] Please continue to refer to Figure 1 In this embodiment, the heating and stirring device further comprises a frame 70, and the liquid storage assembly 10 is detachably connected to the frame 70. By adding the frame 70, the liquid storage assembly 10 can be provided with good support and stability.

[0075] Please continue to refer to Figure 2 Specifically, a plurality of fixing ears 105 (eg, 3) may be provided on the outer wall of the liquid storage barrel 101 , which are threadedly connected to corresponding screw holes on the frame 70 through the fixing ears 105 .

[0076] Please continue to refer to Figure 1 It should be noted that, in this embodiment, a motor fixing seat 701 is further provided on the frame 70, and the driving motor is detachably connected to the motor fixing seat 701.

[0077] Please continue to refer to Figure 1 In this embodiment, a plurality of rollers 702 are provided at the bottom of the frame 70. The addition of the rollers 702 facilitates the overall movement of the device.

[0078] Although the present invention is disclosed as above, it is not limited thereto. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope defined by the claims.

Claims

1. A heating and stirring device, characterized in that: include: A liquid storage component, the liquid storage component comprising a liquid storage cavity; a temperature control component, the temperature control component being used to heat the liquid contained in the liquid storage cavity to a preset temperature; A flow rate driving component is used to drive the liquid contained in the liquid storage chamber to reach a preset flow rate.

2. The heating and stirring device according to claim 1, wherein The liquid storage assembly includes: a liquid storage barrel having the liquid storage cavity; and a sealing cover detachably connected to the liquid storage barrel.

3. The heating and stirring device according to claim 2, wherein: The sealing cover comprises: a cover body; A stabilizing member is fixedly connected to the cover body.

4. The heating and stirring device according to claim 3, wherein The sealing cover also includes: an inner groove ring and an outer groove ring arranged concentrically, the inner groove ring and the outer groove ring are respectively fixedly connected to the cover body, and a sealing groove is formed between the inner groove ring and the outer groove ring; wherein, when the cover is buckled, the opening edge of the liquid storage barrel is located in the sealing groove.

5. The heating and stirring device according to claim 4, wherein: The sealing cover further comprises: a rubber ring, which is arranged in the sealing groove.

6. The heating and stirring device according to claim 1, wherein: The temperature control component includes: a plurality of heating elements, which are arranged in the liquid storage cavity and extend through the liquid storage component to the outside; a temperature measuring element, which is arranged in the liquid storage cavity and is used to detect the temperature of the liquid; a controller, which is arranged outside the liquid storage component, and the heating elements and the temperature measuring elements are electrically connected to the controller respectively; wherein, when the temperature measuring element detects that the liquid temperature reaches the preset temperature, the controller controls the heating element to stop heating; when the temperature measuring element detects that the liquid temperature is lower than the preset temperature, the controller controls the heating element to heat until the liquid temperature reaches the preset temperature.

7. The heating and stirring device according to claim 1, wherein Also includes: A carrying tool is used to carry and fix a number of circuit boards; during testing, the carrying tool is placed in the liquid storage cavity, and the liquid immerses the circuit boards; the carrying tool includes: a charged carrying tool and a non-charged carrying tool.

8. The heating and stirring device according to claim 7, wherein: The live load-bearing tooling includes: a carrier, a plurality of carrier slots arranged in a vertical direction are opened in the carrier, the carrier slots pass through the carrier, and the carrier slots are arranged in the same shape as the circuit board; wherein the circuit board is vertically placed in the carrier slots, and when the circuit board is placed in the carrier slots, the surface of the circuit board is exposed on both opposite sides of the carrier; a plurality of limiting buckles, the carrier slots are located between adjacent limiting buckles; wherein, when the circuit board is limited in the carrier slots, the limiting buckles rotate to block the circuit board.

9. The heating and stirring device according to claim 8, wherein The limiting buckle provides single-sided support for the circuit board; part of the edge of the supporting slot is a step edge; wherein, when the circuit board is limited in the supporting slot, the limiting buckle rotates to support one side of the circuit board, and the step edge is used to support the other side of the circuit board.

10. The heating and stirring device according to claim 8, wherein The limiting buckle provides double-sided support for the circuit board.

11. The heating and stirring device according to claim 7, wherein: The non-powered load-bearing tooling includes: a plurality of connecting plates arranged in parallel along the vertical direction; a plurality of limit bars, which are fixedly connected to each of the connecting plates and have a plurality of limit notches along the vertical direction; wherein the circuit board is horizontally placed in the limit notches corresponding to each of the limit bars; a movable bar, which can pass through each of the connecting plates along the vertical direction; wherein, when the movable bar passes through each of the connecting plates along the vertical direction, it blocks the circuit board.

12. The heating and stirring device according to claim 1, wherein The flow rate drive assembly includes: a stirring part, and a driving part connected to the stirring part; wherein, the stirring part includes: a stirring shaft; wherein, during stirring, one end of the stirring shaft is located in the liquid storage cavity, and the other end of the stirring shaft extends to the outside of the liquid storage assembly and is detachably connected to the driving part; a plurality of stirring paddles, and the stirring paddles are fixedly connected to the stirring shaft.

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