Multifunctional integrated high-voltage electric control cabinet side plate forming device and process

Abstract

The invention relates to the field of stamping devices, and discloses a multifunctional integrated high-voltage electric control cabinet side plate forming device and process, and the multifunctional integrated high-voltage electric control cabinet side plate forming device is characterized by comprising a platform, a female die arranged at the top of the platform, a male die arranged above the female die, and a box body arranged at the bottom of the platform, a partition plate is connected into the box body and divides the box body into a liquid cavity and a connecting cavity. By arranging the hot air channel and the liquid cavity on the connecting channel and arranging the switching component controlled based on the sliding plate, air in the hot air channel is heated by the electric heating wire and then rapidly enters the female die area in the stamping forming stage, synchronous preheating of a die and a plate is achieved, and the ductility of the plate is effectively improved; and the occurrence probability of quality defects such as edge cracking and indentation is reduced.

Description

Technical Field

[0001] This invention relates to the field of stamping equipment technology, specifically to a multifunctional integrated high-voltage electrical control cabinet side panel forming device and process. Background Technology

[0002] In the manufacturing process of high-voltage electrical control cabinets, the side panels are usually formed from metal materials such as cold-rolled steel plates or stainless steel plates through processes such as stamping, flanging, and bending. In addition to supporting the structural function of the cabinet, these side panels must also meet assembly and sealing requirements such as precise mounting hole positions, high flatness, and consistent edge flanging shape.

[0003] However, in actual stamping processes, springback often occurs because the sheet metal releases its internal elastic stress after deformation. This means that the angle, curvature, or hole position deviates from the design value after forming. This springback not only reduces dimensional accuracy but may also lead to assembly interference or product scrap.

[0004] Therefore, how to introduce an effective springback control mechanism during the side plate stamping process is a technical problem that urgently needs to be solved in the field of precision sheet metal forming. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a multifunctional integrated high-voltage electrical control cabinet side panel forming device and process, aiming to alleviate the aforementioned problems to at least a certain extent.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0007] A multi-functional integrated high-voltage electrical control cabinet side panel forming device includes a platform, a concave mold on the top of the platform, a convex mold above the concave mold, and further includes:

[0008] A box is located at the bottom of the platform, and a partition is connected inside the box to separate the box into a liquid chamber and a connecting chamber;

[0009] Two hot air channels are provided on the box body, and a connecting channel is connected to the partition plate. One end of the connecting channel is connected to the liquid cavity, and the other end passes through the partition plate, the box body, the platform and the mold in sequence, and finally flows back to the liquid cavity.

[0010] A sliding plate is disposed within the connecting cavity, and the sliding plate can slide up and down within the connecting cavity;

[0011] A heating element provided in one of the hot air channels is used to heat the air in the hot air channel;

[0012] A stamping component located between the housing and the punch is used to move the position of the punch up and down.

[0013] A switching component located between the hot air channel and the connecting channel is used to deliver air from the hot air channel into the connecting channel when the sliding plate moves downward, and to deliver air from the liquid chamber into the connecting channel when the sliding plate moves upward.

[0014] Preferably, the stamping component includes a top platform disposed on the top of the punch, a hydraulic cylinder connected to the housing, the telescopic shaft of the hydraulic cylinder being connected to the top platform, a push rod a being connected to the top platform, and the punch being disposed on the push rod a.

[0015] Preferably, the stamping component further includes a spring a connected between the top platform and the punch, the top of the die has a connection port that passes through the die and the platform and extends into the housing, the top of the sliding plate is connected to a push rod b, the push rod b is slidably connected in the connection port, and the spring b is connected between the sliding plate and the housing.

[0016] Preferably, the heating element includes a plurality of heating wires disposed in one of the hot air channels.

[0017] Preferably, the switching component includes a baffle a slidably connected to the hot air channel, a connecting port a on the baffle a, a connecting channel penetrating the hot air channel, a connecting port b on the connecting channel communicating with the hot air channel, the baffle a slidably connected to the sliding plate, a plurality of damping ports on the side wall of the baffle a, a damping strip adapted to the damping ports slidably connected to the sliding plate, a spring c connecting the damping strip and the sliding plate, and a plurality of air supply pipes connected to another hot air channel, the air supply pipes extending upward and communicating with the connecting cavity.

[0018] Preferably, the switching component further includes a connection opening on the partition plate, a connecting pipe fixed to the connection opening, the connecting pipe extending upward to the top of the sliding plate, the sliding plate being slidably connected to the connecting pipe, a baffle b for closing the bottom of the connecting pipe being slidably connected inside the connection opening, an extension opening cooperating with the baffle b being provided on the outer wall of the connection channel, a through opening communicating with the connecting pipe being provided on the baffle b, a sloping guide rail being connected to the top of the baffle b, a connecting rod being connected to the bottom of the baffle a, the connecting rod extending to the sloping guide rail and being connected to a guide rod cooperating with the sloping guide rail.

[0019] Preferably, the side wall of the connecting cavity is provided with an air inlet, and two stacked elastic plates are provided in the air inlet to form a one-way valve structure. The concave mold is provided with a heat exchange outlet, and multiple connecting pipes are connected to the connecting channel. The connecting pipes extend upward and communicate with the heat exchange outlet. A top block is slidably connected to the connecting pipe, and a spring d is connected between the top block and the connecting pipe. The connecting pipe, the top block, and the spring d form another one-way valve structure.

[0020] Preferably, a sliding channel is also connected to the connecting channel, and a baffle c is slidably connected in the sliding channel. A spring e is connected between the baffle c and the sliding channel. A guide rod is connected to the bottom of the sliding plate and extends downward into the liquid cavity. An extension tube is rotatably connected in the connecting opening and extends downward into the liquid medium in the liquid cavity. A spiral opening is opened on the outer wall of the extension tube. The guide rod cooperates with the spiral opening. A convex angle plate is connected to the extension tube, corresponding to the baffle c.

[0021] The multi-functional integrated high-voltage electrical control cabinet side panel forming process is applicable to the multi-functional integrated high-voltage electrical control cabinet side panel forming device described in any of the above-mentioned embodiments. The specific steps are as follows:

[0022] Step 1: The stamping part moves down to the top platform and the punch, and the punch presses into the die to achieve the initial forming of the sheet metal;

[0023] Step 2: After the punch and die are engaged, the sliding plate moves down to trigger the hot air path. The hot air conducts heat to the die through the connecting channel, improving the material's plasticity.

[0024] Step 3: After stamping is completed, the sliding plate begins to move upward, switching the passage to the cold air path;

[0025] Step 4: While the punch and die are not yet separated, the sliding plate returns to its original position and moves upward, using positive pressure to push cold air into the connecting channel to achieve rapid cooling of the die.

[0026] Step 5: The guide rod drives the extension tube to rotate, turning the liquid nitrogen to generate low-temperature cold gas;

[0027] Step Six: The accumulated cold air impacts the top block, striking the heat exchange outlet, assisting in molding and vibration demolding.

[0028] In summary, the present invention has the following main beneficial effects:

[0029] This invention provides a multifunctional integrated high-voltage electrical control cabinet side panel forming device that fully utilizes the reciprocating motion of the stamping components to automatically switch between heating and cooling paths, exhibiting high levels of linkage and timing coordination. By configuring a hot air channel and a liquid chamber on the connecting channel, and incorporating a switching component based on a sliding plate control, air in the hot air channel, heated by heating wires, rapidly enters the die area during the stamping stage, achieving synchronous preheating of the die and sheet metal. This effectively improves the sheet metal's ductility and reduces the probability of quality defects such as edge cracking and indentations. After forming, the sliding plate moves upward to switch the cold air channel. Cold air generated by low-temperature liquid nitrogen in the liquid chamber enters the connecting channel under positive pressure and is transported to the die area for rapid cooling. This simplifies the process flow, improves die life and part forming accuracy, and is particularly suitable for hot forming scenarios involving high-strength steel and irregularly shaped structural parts.

[0030] This invention further integrates a self-suction flow structure, a one-way valve structure, and a pulsed exhaust structure, significantly improving airflow guidance efficiency and mold cooling response speed. The hot gas channel adopts an ejector-type air supply pipe structure, inducing negative pressure when the gas is ejected at high speed, automatically drawing in gas from the heating chamber and connecting chamber, constructing a stable airflow loop, and improving heating uniformity. During the cooling process, the sliding plate moves upward to form positive pressure in the liquid chamber, driving low-temperature cold gas into the connecting channel, and using the baffle c in the sliding channel in conjunction with the rotating extension tube to form rhythmic opening and closing, achieving impact-type cooling. The cold gas impacts the top block through the connecting tube, triggering the vibration of the die cavity, effectively alleviating the problem of workpiece sticking to the mold and promoting rapid demolding. At the same time, the extension tube agitates the liquid nitrogen, enhancing the refrigerant generation capacity, resulting in faster cooling speed and higher heat exchange efficiency. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a cross-sectional schematic diagram of the overall structure of the present invention;

[0033] Figure 3 This is a schematic diagram of the die and punch structure of the present invention;

[0034] Figure 4 This is a cross-sectional schematic diagram of the hot air channel structure of the present invention;

[0035] Figure 5 yes Figure 2 Enlarged schematic diagram of the local structure at point A;

[0036] Figure 6 yes Figure 2 Enlarged schematic diagram of the local structure at point B;

[0037] Figure 7 yes Figure 2 Enlarged schematic diagram of the local structure at point C;

[0038] Figure 8 This is a schematic diagram of the sliding channel structure of the present invention.

[0039] Figure label:

[0040] 100. Platform; 101. Die; 102. Punch; 103. Box; 104. Partition; 105. Liquid cavity; 106. Connecting cavity; 107. Hot air passage; 108. Connecting channel; 109. Sliding plate;

[0041] 200. Top platform; 201. Hydraulic cylinder; 202. Push rod a; 203. Spring a; 204. Push rod b; 205. Spring b; 206. Heating wire;

[0042] 300. Baffle a; 301. Connecting port a; 302. Connecting port b; 303. Damping port; 304. Damping strip; 305. Spring c; 306. Air supply duct;

[0043] 400. Connecting opening; 401. Connecting pipe; 402. Baffle b; 403. Extension port; 404. Through port; 405. Inclined guide rail; 406. Connecting rod; 407. Guide rod;

[0044] 500, Air inlet; 501, Elastic sheet; 502, Heat exchange outlet; 503, Connecting pipe; 504, Top block; 505, Spring d; 506, Sliding channel; 507, Baffle c; 508, Spring e; 509, Guide rod; 510, Extension pipe; 511, Spiral opening; 512, Convex angle plate. Detailed Implementation

[0045] 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.

[0046] refer to Figures 1-8 This embodiment provides a multifunctional integrated high-voltage electrical control cabinet side panel forming device, including a platform 100, a housing 103, a concave mold 101, a convex mold 102, a sliding plate 109, a stamping component, a heating part, a hot air channel 107, a liquid chamber 105, a connecting chamber 106, a connecting channel 108, and a switching component.

[0047] The platform 100 has a die 101 at its top, and a punch 102 that can move up and down is located above the die 101. The punch 102 is driven by a stamping component installed between the platform 100 and the housing 103. The housing 103 is located below the platform 100, and its interior is divided into a liquid chamber 105 and a connecting chamber 106 by a partition 104. The liquid chamber 105 is used to contain a cryogenic working fluid, and the connecting chamber 106 is provided with a sliding plate 109 that can slide up and down.

[0048] The housing 103 is provided with two hot air channels 107 for guiding gas into the connecting channel 108. One end of the connecting channel 108 is connected to the liquid chamber 105, and the other end passes through the partition 104, the housing 103, the platform 100 and the mold 101 in sequence, and finally flows back to the liquid chamber 105.

[0049] A heating element is disposed within one of the hot air passages 107 for heating the air within that passage. A switching element is disposed between the hot air passage 107 and the connecting passage 108 for switching the input path of hot or cold air under different conditions.

[0050] With the above setup, the sheet metal to be processed is placed in the die 101 at the top of the platform 100. The stamping component starts working, driving the punch 102 located above the die 101 to move downwards in the vertical direction. When the punch 102 approaches the die 101 and is about to complete the stamping action, the stamping component drives the sliding plate 109 to slide downwards synchronously, so that the switching component is in the hot air passage conduction state. At this time, the heating unit heats the air in the hot air passage 107, introduces it into the connecting passage 108 through the switching component, and conducts it to the die 101 area along the passage.

[0051] As hot air flows through the connecting channel 108, it transfers heat to the channel walls and the die 101, rapidly increasing the temperature of the die 101. This heating process provides sufficient heat to the die 101 during the initial stamping stage, resulting in a higher surface temperature. This significantly improves the plasticity and flowability of the sheet metal during stamping, making it particularly suitable for materials prone to cracking, such as high-strength steel and irregularly shaped components. Hot die forming can effectively delay defects such as edge cracking and indentation, improving the first-pass yield of the parts.

[0052] After stamping is completed, the punch 102 begins to retract upwards. Before it has completely left the die 101, the sliding plate 109 is preferentially driven upwards by the stamping components, thereby switching the switching components to the liquid chamber 105 path. The liquid nitrogen stored in the liquid chamber 105 rapidly vaporizes to form cryogenic gas, which is transported to the die 101 area through the connecting channel 108, achieving rapid cooling of the die 101. By pre-cooling before demolding, the part can form a stable dimensional structure within the mold, significantly suppressing springback, delaying material shrinkage, and further improving forming accuracy. This process occurs before the punch 102 is completely demolded, meaning that the cold gas can pre-cool the die 101 and the inner surface of the workpiece while the workpiece is pressed. This setting cleverly utilizes the "forming window" at the moment of demolding, applying cooling shrinkage force to the material before springback is released, effectively reducing the risk of residual stress accumulation within the workpiece.

[0053] This solution combines the heating element and liquid nitrogen cooling source with switchable gas paths, allowing the heating and cooling processes to be automatically triggered by the reciprocating motion of the stamping components without the need for external controller intervention. It has good self-driving and synchronous coordination capabilities, making it suitable for high-frequency, long-cycle, or space-constrained stamping conditions.

[0054] In this embodiment, the stamping component includes a top platform 200 disposed on the top of the punch 102, and a hydraulic cylinder 201 for driving is connected to the housing 103. The telescopic shaft of the hydraulic cylinder 201 is fixedly connected to the top platform 200. A push rod a202 is provided at the upper end of the top platform 200, and the punch 102 is installed at the lower end of the push rod a202 and moves up and down with the reciprocating motion of the top platform 200.

[0055] With the above settings, during use, the hydraulic cylinder 201 drives its telescopic shaft to extend and retract vertically according to a preset program, thereby causing the top platform 200 connected to the telescopic shaft to reciprocate vertically. The top platform 200 transmits force downward through the ejector rod a202 on it, causing the punch 102 to move downward until it closes with the die 101, completing the stamping deformation of the sheet metal.

[0056] In this embodiment, the stamping component further includes a spring a203 disposed between the top platform 200 and the punch 102.

[0057] The top of the die 101 has a connection port that extends from the upper surface of the die 101 through the body of the die 101 and the platform 100, and extends downward into the interior of the housing 103.

[0058] A top rod b is fixedly connected to the top of the sliding plate 109. The top rod b passes vertically upward through the connection port and slides with the connection port to ensure that the top rod b can be stably guided and does not deviate when the sliding plate 109 moves up and down.

[0059] In addition, a spring b is provided between the sliding plate 109 and the housing 103. The spring b is used to provide an upward elastic restoring force for the sliding plate 109. In the unloaded state, the spring b pushes the sliding plate 109 to the upper limit position, so that the switching component connected to the sliding plate 109 is in the default state of the cold air passage being open.

[0060] With the above configuration, the hydraulic cylinder 201 drives the top platform 200 to move downwards. The top platform 200 presses down against the punch 102 via the spring a203, causing the punch 102 to contact and press into the die 101 to complete the sheet metal stamping. The spring a203 provides appropriate buffering and absorption during this process, effectively offsetting the instantaneous impact force and preventing damage to the mold structure due to rigid collision.

[0061] During the downward pressing of the punch 102, the punch 102 will first cooperate with the die 101, and the top plate 200 will continue to move downward. When the position of the punch 102 is restricted, the top plate 200 will continue to move downward, compressing the spring a. The ejector rod a will contact the ejector rod b204, causing the ejector rod b204 and the sliding plate 109 to move downward, thereby achieving the purpose of driving the sliding plate 109 to move when the punch 102 is moved downward to the predetermined position.

[0062] As push rod a202 continues to press down and press against push rod b, push rod b pushes down the sliding plate 109 connected to its bottom end, causing the sliding plate 109 to slide downward within the connecting cavity 106, overcoming the elastic resistance of spring b and achieving a downward movement of a predetermined distance. The downward movement of the sliding plate 109 will trigger the switching component, switching from the original cold air passage to the hot air passage. The air in the hot air passage 107 is heated by the heating element and then introduced into the connecting passage 108.

[0063] In this embodiment, the heating element specifically includes a plurality of heating wires 206 disposed in one of the hot air channels 107. The heating wires 206 are evenly distributed along the inner wall of the hot air channel 107 and are spaced apart from each other to form a multi-point uniform heating structure.

[0064] With the above configuration, the sliding plate 109 moves downward, causing the switching component to connect the hot air channel 107 with the connecting channel 108, allowing the air source to enter the hot air channel 107 equipped with multiple heating wires 206. At this time, the heating wires 206 are energized, utilizing their own resistance characteristics to convert electrical energy into heat energy, thus heating the air flowing over their surface. Because the multiple heating wires 206 are evenly distributed within the channel, the hot airflow can achieve a uniform temperature rise within a short distance.

[0065] The heated air is then introduced into the connecting channel 108 and flows towards the die 101. During this flow, the hot air increases the overall heat capacity of the connecting channel 108 by heating its walls, and also transfers heat to the die 101 body through thermal conduction. This ensures that the die 101 reaches the required process temperature in a short time, thereby improving the plasticity of the sheet metal in the initial stage of forming.

[0066] In this embodiment, the switching component includes a baffle a slidably connected to the hot air channel 107. The baffle a can slide up and down in the airflow direction within the hot air channel 107. A communication port a is provided on the body of the baffle a for establishing or disconnecting a fluid passage with the connecting channel 108 during sliding. The connecting channel 108 passes through the hot air channel 107 and has a communication port b302 communicating with the hot air channel 107.

[0067] Baffle a is slidably connected to sliding plate 109. As sliding plate 109 moves up and down, baffle a moves accordingly. To control the sliding rhythm of baffle a, its side wall is provided with multiple damping holes 303. Damping strips 304 corresponding to the positions of these damping holes 303 are slidably connected to sliding plate 109. Damping strips 304 are connected to sliding plate 109 by spring c. Spring c provides elastic preload, so that damping strips 304 are limited between baffle a and sliding plate 109 when sliding plate 109 moves.

[0068] In addition, multiple air supply pipes 306 are connected to another hot air passage 107. Each air supply pipe 306 extends upward from the hot air passage 107 and communicates with the connecting cavity 106, forming the exhaust path of the connecting cavity 106.

[0069] With the above settings, during the process of the stamping component driving the sliding plate 109 to move downward, the damping strip 304 on the sliding plate 109 cooperates with the damping port 303 on the side wall of the baffle a, and the preload force of the spring c305 can be used to make the baffle a300 move along with the sliding plate 109 when it moves downward.

[0070] When the baffle a300 moves downward until it contacts the partition 104, its position is restricted, and the connecting port a301 on it connects with the hot air passage 107. At this time, the end of the connecting passage 108 can be sealed to prevent cold air from entering the connecting passage 108.

[0071] As the sliding plate 109 continues to move downward, since the force of the sliding plate 109 moving downward is greater than the preload of the spring c305, the damping strip 304 will slide relative to the damping opening 303 on the side wall of the baffle a, thereby gradually disengaging from the current damping opening 303. As the sliding plate 109 moves downward, the damping strip 304 will cooperate with the next damping opening 303 again until the sliding plate 109 moves downward to the limit position.

[0072] In addition, multiple bent air supply pipes 306 are provided on another hot air channel 107. When the sliding plate 109 continues to move downward and the aforementioned baffle a has completed its position locking, the two hot air channels 107 and the connecting channel 108 are connected, thereby forming a certain degree of positive pressure in the connecting cavity 106.

[0073] Under this positive pressure, the gas in the connecting cavity 106 is forced to flow back into the hot gas channel 107 through the air supply pipe 306 and is ejected from the side wall of the housing 103. During this process, the airflow velocity in the right hot gas channel 107 increases significantly, and a local high-speed flow zone is formed at the end of the air supply pipe 306. Since the hot gas channel 107 adopts a laterally extending structure and remains open at its end, this high-speed airflow generates an induced negative pressure effect inside the channel. This negative pressure zone extends along the direction of the connecting channel 108, and under the premise that the connecting port a and the connecting port b 302 are connected, it can effectively draw gas from the left heating cavity and the connecting channel 108, thereby forming a fluid-induced "self-priming airflow loop".

[0074] This airflow mechanism allows the hot gas channel 107 to simultaneously draw in gas from the left side while expelling gas from the connecting cavity 106, and then entrain it into the overall airflow for discharge. Since another hot gas channel 107 is equipped with a heating wire 206, the gas drawn in from the left side and the gas in the connecting channel 108 are further heated by the heating wire 206 as they flow through the hot gas channel 107, thereby supplementing the airflow temperature and ensuring a stable and uniform heat distribution in the discharged overall airflow. This achieves the purpose of heating the die 101 after the punch 102 moves downwards and engages with the die 101.

[0075] In this embodiment, the switching component further includes a connection opening 400 disposed on the partition 104. A connecting pipe 401 is fixedly installed at the upper end of the connection opening 400. The connecting pipe 401 extends upward in the vertical direction and penetrates to the top area of ​​the sliding plate 109 to form a through structure.

[0076] The sliding plate 109 is slidably connected to the connecting pipe 401 via a sleeve structure on its body, and can move up and down along the connecting pipe 401. Inside the connecting opening 400, a baffle b is slidably connected to close the bottom outlet of the connecting pipe 401 at a specific position. The outer wall of the connecting channel 108 has an extension opening 403 that mates with the baffle b 402, and the baffle b 402 has a through opening 404 that communicates with the connecting pipe 401. The top of the baffle b is connected to an inclined guide rail 405, which is arranged at an inclination to guide the baffle b to make horizontal sliding movements.

[0077] The bottom of the baffle a is provided with a connecting rod 406, which extends to the area of ​​the inclined guide rail 405 and is connected at its end with a guide rod 407 that slides and engages with the inclined guide rail 405.

[0078] With the above configuration, when the stamping component drives the sliding plate 109 to move downward, the sliding plate 109, through the damping strip 304 provided thereon, cooperates with the damping port 303 of the baffle a, and under the preload of the spring c, drives the baffle a to slide downward. As the baffle a moves downward, its connecting port a gradually aligns with the hot air channel 107, thereby realizing the connection between the hot air channel 107 and the connecting channel 108.

[0079] At the same time, as the baffle a moves down, the connecting rod 406 connected to its bottom moves down synchronously, and drives the guide rod 407 connected to its end to press down. Since the guide rail is arranged at an angle, the vertical downward movement of the guide rod 407 will press the inclined guide rail 405, thereby forcing the baffle b connected to the inclined guide rail 405 to slide horizontally or obliquely along the direction of the connecting opening 400.

[0080] The baffle b402 slides, with one end sliding along the connecting opening 400 into the connecting channel 108, sealing the end of the connecting channel 108 and preventing gas in the liquid chamber 105 from entering the connecting channel 108. The other end slides, allowing the through port 404 to move away from the position of the connecting pipe 401, sealing the bottom of the connecting pipe 401, thereby temporarily sealing the liquid chamber 105 and preventing cold air from leaking out of the liquid chamber 105.

[0081] As the sliding plate 109 continues to move downward, hot air flows in the hot air channel 107 and the connecting channel 108, which can heat the die 101 and help the sheet metal be formed.

[0082] After the stamping work is completed, the stamping part moves the top plate 200 upward to reset its position. The ejector rod a on the top plate 200 moves upward first. At this time, the sliding plate 109 gradually moves upward to reset due to the potential energy of the spring b205. Before the punch 102 is separated from the die 101, the sliding plate moves upward.

[0083] During this process, the cooperation between the damping strip 304 and the damping port 303 allows the baffle a to move in a timely manner during the initial upward movement of the sliding plate 109. As the sliding plate 109 continues to move upward, the baffle a gradually slides upward, and its connecting port a is misaligned with the hot air passage 107, cutting off the hot air passage and preventing high-temperature gas from continuing to flow into the connecting channel 108, thus forming a good heat source isolation effect.

[0084] At the same time, as the baffle a moves upward, the connecting rod 406 connected to its bottom causes the guide rod 407 to slide in the opposite direction in the inclined guide rail 405. Since the inclined guide rail 405 is arranged at an angle, the upward movement of the guide rod 407 will slide back along the guide rail direction, thereby driving the baffle b from its original closed position in the connecting channel 108 to slide out in the opposite direction, gradually leaving the end of the connecting channel 108, thus completing the unsealing of the end of the connecting channel 108.

[0085] As the sliding plate 109 moves upward, a gradually shrinking, sealed cavity is formed between its top region and the housing 103. This cavity, due to its reduced volume, creates a localized positive pressure. Positive pressure air flows into the connecting pipe 401 along the gap between the sliding plate 109 and the connecting pipe 401, and is "pressurized" into the liquid chamber 105 while the connecting pipe 401 is open. This creates a reverse airflow return path during the sliding plate 109's reset phase. At this time, the cold air in the liquid chamber 105 rapidly enters the connecting channel 108, thus achieving the purpose of cooling the die 101 after stamping.

[0086] This process occurs before the punch 102 has completely left the mold and the mold is still closed. Therefore, the cold air can be conducted to the die 101 surface and the forming area while the workpiece is pressed. This helps to fix the workpiece size and control the edge contour shrinkage, thereby significantly suppressing the elastic rebound of the material and improving the accuracy and stability of the part.

[0087] In this embodiment, the side wall of the connecting cavity 106 is provided with an air inlet 500, and two stacked elastic sheets 501 are provided inside the air inlet 500 to form a first type of one-way valve structure, allowing only outside air to enter the connecting cavity 106 in one direction. The concave mold 101 is provided with a heat exchange outlet 502, and multiple connecting pipes 503 are connected to the connecting channel 108. The connecting pipes 503 extend upward and their tops communicate with the heat exchange outlet 502.

[0088] Each connecting pipe 503 is slidably connected to a top block 504. The top block 504 is connected to the connecting pipe 503 by a spring d. The spring d gives the top block 504 a downward preload, so that the top block 504 closes the top outlet of the connecting pipe 503 when it is not under force, thus forming a second type of one-way valve structure.

[0089] With the above configuration, when the stamping component drives the sliding plate 109 downward, the cavity between the top area of ​​the sliding plate 109 and the housing 103 expands, increasing in volume and creating a local negative pressure. Under this negative pressure, external air automatically enters the housing 103 through the first one-way valve (elastic sheet 501 structure) located on the side wall of the connecting cavity 106, replenishing the upper cavity with timely air. As the sliding plate 109 continues to move downward and completes the path closure between the connecting pipe 401 and the liquid cavity 105, the air stored in the top cavity will be "retained" for use as positive pressure when the sliding plate 109 moves upward. This positive pressure will push the cold air formed by the evaporation of liquid nitrogen in the liquid cavity 105 towards the connecting channel 108, realizing cold air replacement and output preparation.

[0090] During the upward movement of the sliding plate 109, the air at the top is compressed to form a local positive pressure. This positive pressure enters the liquid chamber 105 along the connecting pipe 401, further pushing the cold air into the connecting channel 108. Since both ends of the connecting channel 108 are connected to the liquid chamber 105, an effective cold air discharge path needs to be formed to prevent gas pressure from becoming chaotic.

[0091] At this time, when the cold air enters the connecting channel 108, the top block 504 at the outlet of the connecting pipe 503 is pushed by the airflow pressure to overcome the preload of the spring d. The top block 504 moves upward, opening the outlet of the connecting pipe 503. The cold air enters the heat exchange outlet 502 through the connecting pipe 503, completing the heat exchange process with the die 101.

[0092] In this embodiment, a sliding channel 506 is further connected to the connecting channel 108, and a baffle c is slidably connected in the sliding channel 506. The baffle c and the sliding channel 506 are connected to each other by a spring e, and the spring e gives the baffle c a preload.

[0093] The bottom of the sliding plate 109 is connected to a guide rod 509, which extends vertically downward into the liquid chamber 105. An extension tube 510 is rotatably connected inside the connection opening 400, and the extension tube 510 also extends downward into the liquid chamber 105, with its end penetrating into the liquid medium (such as liquid nitrogen).

[0094] The outer wall of the extension tube 510 is provided with a spiral opening 511, and the guide rod 509 cooperates with the spiral opening 511 to drive the extension tube 510 to rotate during the up and down sliding process.

[0095] The upper outer side of the extension tube 510 is connected to a convex angle disk 512, which is positioned corresponding to the baffle c. Through the "impact" or "eccentric protrusion pushing" action during the rotation process, the baffle c can be intermittently slipped in a certain time sequence, thereby realizing the intermittent opening and closing control of the end of the connecting channel 108.

[0096] With the above configuration, during the stamping process, the sliding plate 109 moves downward with the stamping component, causing the guide rod 509 connected to its bottom to move downward synchronously. During the downward sliding process, the guide rod 509 slides down along the outer wall of the extension tube 510, and through the spiral opening 511, it can apply a tangential force to the extension tube 510, driving the extension tube 510 to start rotating.

[0097] When the extension tube 510 rotates, the convex angle disk 512 mounted on it rotates simultaneously. The eccentric protrusion structure of the convex angle disk 512 periodically pushes the baffle c during rotation, causing the baffle c to slide intermittently under the action of the preload spring e, thereby periodically opening or closing the end outlet of the connecting channel 108. This structure can achieve "pulse control" of the airflow outlet state during the continuous movement of the sliding plate 109.

[0098] When baffle c is closed, sliding plate 109 continues to return to its original position, creating a local positive pressure inside liquid cavity 105. At this time, the outlet of connecting channel 108 is blocked by baffle c, and air pressure accumulates rapidly. When baffle c is "released" by convex disc 512 to open the channel outlet, the accumulated airflow will impact the top block 504 in connecting pipe 503 at high speed. Under the impact of the airflow, the top block 504 overcomes the elastic force of spring d and moves upward, impacting the heat exchange outlet 502 of die 101, forming a slight vibration wave. This vibration acts on the sheet metal at the stage when stamping is finished and the punch 102 is about to retract, which can help the sheet metal to be quickly peeled from die 101, improve demolding efficiency, and avoid sticking and deformation. This vibration release action happens to occur in the time window when the stamping work is completed but the punch 102 has not yet completely retracted. Vibration peeling at this stage will not affect the forming accuracy and can reduce defects such as roughening, tearing, or curling caused by excessive adhesion of the sheet metal during subsequent demolding.

[0099] Simultaneously, as the guide rod 509 drives the extension tube 510 to rotate, the bottom end of the extension tube 510 is located in the liquid nitrogen in the liquid chamber 105. Under positive pressure, gas enters the extension tube 510 through the connecting pipe 401 and is sent into the liquid medium through the rotating extension tube 510. During this process, the extension tube 510 acts like a stirrer, agitating the liquid nitrogen, increasing the gas-liquid contact area, and promoting more complete vaporization of the liquid nitrogen to generate cooler, more saturated cold gas, providing a more efficient source of refrigerant for the cooling process.

[0100] The multi-functional integrated high-voltage electrical control cabinet side panel forming process is applicable to the multi-functional integrated high-voltage electrical control cabinet side panel forming device described in any of the above-mentioned embodiments. The specific steps are as follows:

[0101] Step 1: The stamping part moves down the top platform 200 and the punch 102, and the punch 102 presses into the die 101 to achieve the initial forming of the sheet metal;

[0102] Step 2: After the punch 102 and the die 101 are engaged, the sliding plate 109 moves down to trigger the hot air path. The hot air conducts heat to the die 101 through the connecting channel 108, improving the material's plasticity.

[0103] Step 3: After stamping is completed, the sliding plate 109 begins to move upward, switching the passage to the cold air path;

[0104] Step 4: While the punch 102 and the die 101 are not yet separated, the sliding plate 109 resets and moves upward, using positive pressure to push cold air into the connecting channel 108 to achieve rapid cooling of the die 101.

[0105] Step 5: The guide rod 509 drives the extension tube 510 to rotate, turning the liquid nitrogen to generate low-temperature cold gas;

[0106] Step 6: The accumulated cold air impacts the top block 504 and strikes the heat exchange outlet 502, assisting in molding and vibration demolding.

[0107] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional integrated high-voltage electrical control cabinet side panel forming device, comprising a platform (100), wherein a concave mold (101) is provided on the top of the platform (100), and a convex mold (102) is provided above the concave mold (101); Its features are, Also includes: A box (103) is provided at the bottom of the platform (100), and a partition (104) is connected inside the box (103). The partition (104) separates the box (103) into a liquid chamber (105) and a connecting chamber (106). Two hot air channels (107) are provided on the housing (103), and a connecting channel (108) is connected on the partition (104). One end of the connecting channel (108) is connected to the liquid cavity (105), and the other end passes through the partition (104), housing (103), platform (100) and mold (101) in sequence, and finally flows back to the liquid cavity (105). A sliding plate (109) is provided in the connecting cavity (106), and the sliding plate (109) can slide up and down in the connecting cavity (106); A heating unit is provided in one of the hot air channels (107) for heating the air in the hot air channel (107); A stamping component located between the housing (103) and the punch (102) is used to move the position of the punch (102) up and down; A switching component located between the hot air channel (107) and the connecting channel (108) is used to deliver air from the hot air channel (107) to the connecting channel (108) when the sliding plate (109) moves downward, and to deliver air from the liquid chamber (105) to the connecting channel (108) when the sliding plate (109) moves upward.

2. The multifunctional integrated high-voltage electrical control cabinet side panel forming device according to claim 1, characterized in that, The stamping component includes a top platform (200) disposed on the top of the punch (102), a hydraulic cylinder (201) connected to the housing (103), the telescopic shaft of the hydraulic cylinder (201) being connected to the top platform (200), a push rod a (202) connected to the top platform (200), and the punch (102) being disposed on the push rod a (202).

3. The multifunctional integrated high-voltage electrical control cabinet side panel forming device according to claim 2, characterized in that, The stamping component also includes a spring a (203) connected between the top platform (200) and the punch (102). The top of the die (101) is provided with a connection port that passes through the die (101) and the platform (100) and extends into the housing (103). The top of the sliding plate (109) is connected to a push rod b (204), which is slidably connected in the connection port. A spring b (205) is connected between the sliding plate (109) and the housing (103).

4. The multifunctional integrated high-voltage electrical control cabinet side panel forming device according to claim 1, characterized in that, The heating element includes a plurality of heating wires (206) disposed in one of the hot air channels (107).

5. The multifunctional integrated high-voltage electrical control cabinet side panel forming device according to claim 1, characterized in that, The switching component includes a baffle a (300) slidably connected to the hot air channel (107), the baffle a (300) having a connecting port a (301), the connecting channel (108) passing through the hot air channel (107), the connecting channel (108) having a connecting port b (302) communicating with the hot air channel (107), the baffle a (300) being slidably connected to the sliding plate (109), the baffle... Multiple damping ports (303) are provided on the side wall of a (300). A damping strip (304) adapted to the damping port (303) is slidably connected on the sliding plate (109). A spring c (305) is connected between the damping strip (304) and the sliding plate (109). Multiple air supply pipes (306) are connected to another hot air channel (107). The air supply pipes (306) extend upward and communicate with the connecting cavity (106).

6. The multifunctional integrated high-voltage electrical control cabinet side panel forming device according to claim 5, characterized in that, The switching component further includes a connection opening (400) on the partition (104), a connecting pipe (401) fixed to the connection opening (400), the connecting pipe (401) extending upward to the top of the sliding plate (109), the sliding plate (109) being slidably connected to the connecting pipe (401), and a baffle b (402) for closing the bottom of the connecting pipe (401) being slidably connected inside the connection opening (400). The outer side of the connection channel (108) The wall has an extension opening (403) that cooperates with the baffle b (402). The baffle b (402) has a through opening (404) that communicates with the connecting pipe (401). The top of the baffle b (402) is connected to an inclined guide rail (405). The bottom of the baffle a (300) is connected to a connecting rod (406). The connecting rod (406) extends to the inclined guide rail (405) and is connected to a guide rod (407) that cooperates with the inclined guide rail (405).

7. The multifunctional integrated high-voltage electrical control cabinet side panel forming device according to claim 1, characterized in that, An air inlet (500) is provided on the side wall of the connecting cavity (106). Two stacked elastic plates (501) are provided in the air inlet (500) to form a one-way valve structure. A heat exchange outlet (502) is provided on the concave mold (101). Multiple connecting pipes (503) are connected to the connecting channel (108). The connecting pipes (503) extend upward and communicate with the heat exchange outlet (502). A top block (504) is slidably connected to the connecting pipe (503). A spring d (505) is connected between the top block (504) and the connecting pipe (503). The connecting pipe (503), the top block (504), and the spring d (505) form another one-way valve structure.

8. The multifunctional integrated high-voltage electrical control cabinet side panel forming device according to claim 6, characterized in that, A sliding channel (506) is also connected to the connecting channel (108). A baffle c (507) is slidably connected inside the sliding channel (506). A spring e (508) is connected between the baffle c (507) and the sliding channel (506). A guide rod (509) is connected to the bottom of the sliding plate (109). The guide rod (509) extends downward into the liquid cavity (105). An extension tube (510) is rotatably connected inside the connecting opening (400). The extension tube (510) extends downward into the liquid medium inside the liquid cavity (105). A spiral opening (511) is opened on the outer wall of the extension tube (510). The guide rod (509) cooperates with the spiral opening (511). A convex angle plate (512) is connected to the extension tube (510), corresponding to the baffle c (507).

9. A multi-functional integrated high-voltage electrical control cabinet side panel forming process, applicable to the multi-functional integrated high-voltage electrical control cabinet side panel forming device as described in any one of claims 1-8, characterized in that, The specific steps are as follows: Step 1: The stamping part moves down the top platform (200) and the punch (102), and the punch (102) presses into the die (101) to achieve the initial forming of the sheet metal; Step 2: After the punch (102) and the die (101) are engaged, the sliding plate (109) moves down to trigger the hot air path. The hot air conducts heat to the die (101) through the connecting channel (108) to improve the material's plasticity. Step 3: After stamping is completed, the sliding plate (109) begins to move upward, switching the passage to the cold air path; Step 4: While the punch (102) and die (101) are not yet separated, the sliding plate (109) is reset and moved upward, using positive pressure to push cold air into the connecting channel (108) to achieve rapid cooling of the die (101); Step 5: The guide rod (509) drives the extension tube (510) to rotate, turning the liquid nitrogen to generate low-temperature cold gas; Step 6: The accumulated cold air impacts the top block (504), impacts the heat exchange outlet (502), and assists in molding and vibration demolding.

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