An etching apparatus for honeycomb aluminum core block used in automobile simulation collision test

Abstract

The application discloses a kind of etching equipment for automobile simulation collision test honeycomb aluminum core block, including: etching pool, neutralization pool and cleaning pool;First sliding member and second sliding member, the second sliding member is provided with the clamping plate for connecting honeycomb aluminum core block;The second sliding member is configured to be immersed or exited etching liquid with first speed in the first etching area, and be immersed or exited etching liquid with second speed in the second etching area, and the first speed is greater than or less than the second speed.In the application, honeycomb aluminum core block is divided into first etching area and second etching area along the height direction, and different etching areas are immersed or exited etching liquid at different speeds, so that the change speed of etching amount of first etching area and second etching area is not the same, and the phased mechanical property change can be realized, and the collision position of automobile can be more realistically simulated.

Description

Technical Field

[0001] This invention relates to the field of metal etching equipment technology, and more particularly to an etching device for honeycomb aluminum core blocks used in simulated car crash tests. Background Technology

[0002] In automotive crash tests, a car is impacted at a certain speed onto a crash test platform, and various force parameters are recorded during the collision to improve the car's structure. To reduce testing costs, honeycomb aluminum core blocks are typically used to simulate the car's impact points. However, the car crash process involves several different force stages, and the strength changes of the impacted parts vary in each stage. Therefore, the honeycomb aluminum core blocks need to be designed as regions with multiple stages of varying mechanical properties to realistically simulate the car's impact points and provide more valuable test data.

[0003] For example, the patent document with publication number "JP2006037155A" and patent name "Method for Adjusting Aluminum Foil Thickness" describes how different amounts of etching solution are applied to different parts of the aluminum foil, thereby etching different thicknesses in different parts and achieving changes in the mechanical properties of different parts.

[0004] However, the above-mentioned method has the drawbacks of making it difficult to control the amount of etching solution applied, making it difficult to clearly define the application area, and making the operation very inconvenient. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide an etching device for honeycomb aluminum core blocks for automobile simulated crash tests, so as to solve the problems of difficulty in controlling the amount of etching solution and inconvenience of operation in the prior art.

[0006] The technical solution adopted by this invention to solve its technical problem is an etching device for a honeycomb aluminum core block used in automobile simulated crash tests. The honeycomb aluminum core block has at least a first etching area and a second etching area arranged along the height direction. The etching device includes:

[0007] An etching pool, a neutralization pool, and a cleaning pool are arranged sequentially along the length of the etching equipment. The etching pool contains an etching solution for etching the honeycomb aluminum core block.

[0008] A movable component includes a first slider movable along the length of the etching equipment, and a second slider disposed on the first slider and slidable relative to the first slider along the height direction. The second slider is provided with a clamping plate for connecting a honeycomb aluminum core block. The first slider slides along the length direction to position the honeycomb aluminum core block above any one of the etching tank, the neutralization tank, and the cleaning tank. The second slider slides along the height direction to allow the honeycomb aluminum core block to extend into or retract from any one of the etching tank, the neutralization tank, and the cleaning tank.

[0009] The second slider is configured to immerse or withdraw the first etched area from the etching solution at a first speed and to immerse or withdraw the second etched area from the etching solution at a second speed, wherein the first speed is greater than or less than the second speed.

[0010] Furthermore, it also includes a zero-point marking component, which includes: a first electrode electrically connected to the etching solution; a second electrode electrically connected to the honeycomb aluminum core block; and a PLC chip for marking the height position of the honeycomb aluminum core block as the zero-point height when the first electrode and the second electrode are connected.

[0011] The first etched area is located at the bottom of the honeycomb aluminum core block, and the height of the first etched area is recorded as the first height; the second etched area is located above the first etched area, and the height of the second etched area is recorded as the second height; when the honeycomb aluminum core block is at zero height, the PLC chip can control the second slider to descend at a first speed to the first height, and then descend at a second speed to the second height.

[0012] Furthermore, an air blowing assembly is also provided, including: an air blowing pipe disposed at the bottom of the etching pool, wherein multiple air holes are provided on the side wall of the air blowing pipe for introducing high-pressure gas into the etching pool.

[0013] Furthermore, multiple air blowing pipes are provided at the bottom of the etching pool, and the multiple air blowing pipes are arranged in parallel at intervals.

[0014] Furthermore, an addition pipe for adding reagents is provided above the etching pool. The addition pipe is configured to add reagents to the etching pool when the reagent concentration of the etching solution is lower than a preset value.

[0015] A pH sensor is installed in the etching pool to monitor the concentration of the reagents in the etching pool.

[0016] Furthermore, it also includes a heating assembly, which includes a heating element connected to a liquid extraction pipe and a liquid discharge pipe, the liquid extraction pipe and the liquid discharge pipe being simultaneously connected to the etching tank;

[0017] A temperature sensor is also installed in the etching pool to monitor the temperature of the etching solution in the etching pool.

[0018] Furthermore, the moving component further includes: a first rack arranged along the length direction of the etching device, and a first gear disposed on the first sliding member that can mesh with the first rack; a second rack arranged on the first sliding member along the height direction of the etching device, and a second gear disposed on the second sliding member that can mesh with the second rack.

[0019] Furthermore, the honeycomb aluminum core block has a plurality of through holes arranged along the height direction;

[0020] The clamping plate is provided with a plurality of locking posts, and at least one deformable elastic block is provided on each locking post, and the maximum width of the elastic block is greater than the maximum width of the through hole.

[0021] The plurality of elastic blocks on the clamping plate can extend into the through hole and abut against the inner wall of the through hole to provide a frictional force greater than or equal to the weight of the honeycomb aluminum core block.

[0022] Furthermore, the elastic block has an upper end face and a lower end face that are opposite to each other, and the elastic block has a plurality of channels that penetrate the upper end face and the lower end face.

[0023] Furthermore, the elastic block is tapered, and the cross-sectional area of ​​the elastic block gradually decreases along the direction in which the elastic block is inserted into the through hole.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] The honeycomb aluminum core is divided into a first etching zone and a second etching zone along the height direction. When different etching zones are immersed in or withdrawn from the etching solution at different speeds, the etching amount in the first etching zone and the etching amount in the second etching zone can be uniformly varied. However, the etching amount in the first etching zone and the etching amount in the second etching zone vary at different rates, which can achieve phased changes in mechanical properties. This allows for a more realistic simulation of the collision points of a car, providing more valuable test data. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the etching equipment in the embodiment;

[0027] Figure 2 This is a schematic diagram of the etching pool structure in the embodiment;

[0028] Figure 3 This is a schematic diagram of the structure of the moving component, clamping plate and honeycomb aluminum core block in the embodiment;

[0029] Figure 4 This is a schematic diagram of the structure of the clamping plate and the honeycomb aluminum core block in the embodiment;

[0030] Figure 5 This is a schematic diagram of the clamping plate in the embodiment;

[0031] Figure 6 This is a schematic diagram of the locking pin structure in the embodiment;

[0032] Figure 7 This is a schematic diagram of the air blowing pipe in the embodiment;

[0033] Figure 8 This is a schematic diagram of the cleaning tank in the embodiment;

[0034] In the diagram: 100, honeycomb aluminum core block; 200, moving component; 210, clamping plate; 211, through groove; 220, locking post; 221, locking sleeve; 222, elastic block; 223, channel; 230, first sliding member; 231, first gear; 232, first rack; 240, second sliding member; 241, second gear; 242, second rack; 300, etching tank; 310, heating element; 311, drain pipe; 312, extraction pipe; 320, air blowing pipe; 321, air hole; 330, adding pipe; 340, pH sensor; 350, temperature sensor; 400, neutralization tank; 500, cleaning tank; 510, air blowing pipe; 511, air blowing hole. Detailed Implementation

[0035] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0036] Please refer to Figures 1-3 This invention discloses an etching apparatus for a honeycomb aluminum core block 100 used in simulated car crash tests. The honeycomb aluminum core block 100 has at least a first etching area and a second etching area arranged along the height direction. The etching apparatus includes:

[0037] An etching pool 300, a neutralization pool 400, and a cleaning pool 500 are arranged sequentially along the length of the etching equipment. The etching pool 300 contains an etching solution for etching the honeycomb aluminum core block 100.

[0038] The moving component 200 includes a first slider 230 movable along the length of the etching equipment, and a second slider 240 disposed on the first slider 230 and slidable relative to the first slider 230 along the height direction. The second slider 240 is provided with a clamping plate 210 for connecting the honeycomb aluminum core block 100. The first slider 230 slides along the length direction to position the honeycomb aluminum core block 100 above any one of the etching tank 300, the neutralization tank 400, and the cleaning tank 500. The second slider 240 slides along the height direction to allow the honeycomb aluminum core block 100 to extend into or exit any one of the etching tank 300, the neutralization tank 400, and the cleaning tank 500.

[0039] The second slider 240 is configured to immerse or withdraw the first etched area into the etching solution at a first speed and to immerse or withdraw the second etched area into the etching solution at a second speed, wherein the first speed is greater than or less than the second speed.

[0040] It should be noted that when the entire honeycomb aluminum core block 100 is immersed in or withdrawn from the etching solution at the same speed, the etching thickness of the honeycomb aluminum core block 100 changes uniformly, and it is impossible to achieve mechanical properties (structural strength, etc.) that change in stages, thus making it impossible to simulate the collision part of a car.

[0041] Based on this, this application divides the honeycomb aluminum core block 100 into a first etching zone and a second etching zone along the height direction. By immersing or withdrawing different etching zones into the etching solution at different speeds, the etching amount in the first etching zone and the second etching zone can be uniformly varied, but the etching amount in the first and second etching zones can vary at different rates. This allows for staged changes in mechanical properties, thereby more realistically simulating the collision points of a car and providing more valuable experimental data. The first and second etching zones described in this application are merely for ease of description and do not limit the specific number of etching zones. The honeycomb aluminum core block 100 can have two or more arbitrary numbers of etching zones, and different etching zones can be immersed or withdrawn from the etching solution at different speeds.

[0042] Specifically, the first sliding member 230 slides along its length, causing the second sliding member 240, the clamping plate 210, and the honeycomb aluminum core block 100 on the clamping plate 210 to slide along their length as well, moving the honeycomb aluminum core block 100 above the etching pool 300. Then, the second sliding member 240 slides downwards, immersing the honeycomb aluminum core block 100 at different heights and speeds below the surface of the etching solution. After remaining in the etching pool 300 for a period of time, the honeycomb aluminum core block 100 is lifted and moved along its length to the neutralization pool 400 for neutralization. Finally, it enters the cleaning pool 500 for cleaning. After cleaning, the honeycomb aluminum core block 100 is moved back to its initial position for disassembly and unloading, completing the etching process. This achieves full automation of etching, neutralization, and cleaning.

[0043] It should also be mentioned that, in order to obtain the honeycomb aluminum core block 100 with phased mechanical property changes, this application can either immerse it in the etching solution at different heights and positions and then lift it out at a uniform speed, or first immerse the honeycomb aluminum core block 100 in the etching solution at a uniform speed and then lift it out at different heights and speeds. Both of the above methods can obtain the honeycomb aluminum core block 100 with phased mechanical property changes.

[0044] Furthermore, it also includes a zero-point marking component, which includes: a first electrode electrically connected to the etching solution; a second electrode electrically connected to the honeycomb aluminum core block 100; and a PLC chip for marking the height position of the honeycomb aluminum core block 100 as the zero-point height when the first electrode and the second electrode are connected.

[0045] The first etched area is located at the bottom of the honeycomb aluminum core block 100, and the height of the first etched area is recorded as the first height; the second etched area is located above the first etched area, and the height of the second etched area is recorded as the second height; when the honeycomb aluminum core block 100 is at zero height, the PLC chip can control the second slider 240 to descend at a first speed to the first height, and then descend at a second speed to the second height.

[0046] Specifically, the first electrode is electrically connected to the etching solution, and the second electrode is electrically connected to the honeycomb aluminum core block 100. Once the bottom of the honeycomb aluminum core block 100 contacts the etching solution, the first and second electrodes become conductive, forming a closed circuit between the honeycomb aluminum core block 100 and the etching solution, generating an electrical signal. The PLC chip uses this signal to determine that the honeycomb aluminum core block 100 has just come into contact with the etching solution and marks its position as the zero point. Next, the PLC chip controls the second slider 240 to slide downwards, submerging the first etching area below the surface of the etching solution at a first speed, and then submerging the second etching area below the surface of the etching solution at a second speed.

[0047] In this way, a honeycomb aluminum core block 100 with phased mechanical property changes is obtained by chemical etching.

[0048] Further, please refer to Figure 1 and Figure 7 It is also equipped with an air blowing assembly, including an air blowing pipe 320 disposed at the bottom of the etching pool 300, wherein a plurality of air holes 321 are provided on the side wall of the air blowing pipe 320 for introducing high-pressure gas into the etching pool 300.

[0049] Specifically, this application provides an air blowing pipe 320 at the bottom of the etching pool 300, and opens multiple air holes 321 on the air blowing pipe 320. By introducing high-pressure gas (compressed air, etc.) into the air blowing pipe 320, air bubbles are blown out at the bottom of the etching pool 300. The air bubbles flow upward to achieve the stirring effect on the etching solution, thereby making the concentration of the etching solution inside and outside the through hole more uniform and the etching rate consistent, which makes it easier to obtain a honeycomb aluminum core block 100 with the required mechanical properties.

[0050] Furthermore, the concentration deviation inside and outside the via varies with different etching rates; the higher the etching rate, the greater the corresponding concentration deviation. Therefore, this embodiment also includes an air pump connected to the air blowing pipe 320 and a PLC chip for controlling the power of the air pump. The PLC chip controls the function of the air pump according to the current etching rate, thereby controlling the intake volume of high-pressure gas to control the stirring force of the bubbles on the etching solution.

[0051] Furthermore, multiple air blowing pipes 320 are provided at the bottom of the etching pool 300, and the multiple air blowing pipes 320 are arranged in parallel at intervals.

[0052] Multiple air blowing pipes are arranged in parallel at 320° intervals, which makes the stirring force of the air bubbles on the etching solution at each position more uniform, thereby making the concentration of the etching solution at each position more uniform.

[0053] Further, please refer to Figure 2 Above the etching pool 300, there is also an addition pipe 330 for adding reagents. The addition pipe 330 is configured to add reagents into the etching pool 300 when the reagent concentration of the etching solution is lower than a preset value.

[0054] A pH sensor 340 is installed in the etching pool 300 to monitor the concentration of the reagent in the etching pool 300.

[0055] Specifically, the pH sensor 340 acquires the current acidity or alkalinity within the etching tank 300 and sends it to the PLC chip. The PLC chip converts this into the concentration of the etching solution. When the concentration falls below a preset value, the PLC chip controls the addition pipe 330 to add reagent to the etching tank 300 until the reagent concentration in the etching tank 300 is within the preset range. This achieves automatic adjustment of the reagent concentration, ensuring that the etching solution concentration in the etching tank 300 remains within the preset range.

[0056] When adding the reagent, the air blowing pipe 320 blows air upwards from the bottom of the etching pool 300 and stirs the etching solution, thereby making the newly added reagent and the original etching solution quickly and evenly mixed.

[0057] Furthermore, it also includes a heating assembly, which includes a heating element 310, on which a liquid extraction pipe 312 and a liquid discharge pipe 311 are connected, and the liquid extraction pipe 312 and the liquid discharge pipe 311 are simultaneously connected to the etching tank 300.

[0058] A temperature sensor 350 is also provided in the etching pool 300 to monitor the temperature of the etching solution in the etching pool 300.

[0059] It should be noted that before etching, the temperature in the etching pool needs to be adjusted to a preset temperature range (e.g., 34℃-36℃) to meet the etching temperature requirements. Therefore, this embodiment includes a temperature sensor 350 and a heating component. The etching solution is drawn from the etching pool 300 through the extraction pipe 312 and heated by the heating element 310. Then, it is discharged back into the etching pool 300 through the drainage pipe 311, thus achieving the heating of the etching solution. Since the etching process itself is an exothermic reaction, it is necessary to reduce the power of the heating element 310 or even stop its operation to maintain the temperature of the etching solution within the preset range through the exothermic reaction itself.

[0060] Specifically, the temperature sensor 350 acquires the temperature information of the etching solution in the etching pool 300, and then transmits the information to the PLC chip. The PLC chip controls the opening and closing of the heating element 310 and the power when it is on, based on the current temperature and the current etching reaction rate, so as to maintain the temperature in the pool within a preset range and achieve automatic temperature regulation in the pool.

[0061] In other words, this application keeps the temperature and concentration in the etching pool 300 constant. Therefore, the only factor affecting the etching rate of the honeycomb aluminum core block 100 is the immersion time in the etching solution. By adjusting the honeycomb aluminum core block 100 to descend at different speeds in different etching zones, the immersion time of different parts in the etching solution can be controlled, thereby controlling the amount of etching and ultimately achieving phased changes in the mechanical properties of the honeycomb aluminum core block 100.

[0062] Further, please refer to Figure 1 and Figure 3 The moving component 200 further includes: a first rack 232 arranged along the length direction of the etching device; a first gear 231 that can mesh with the first rack 232 is provided on the first sliding member 230; a second rack 242 is arranged on the first sliding member 230 along the height direction of the etching device; and a second gear 241 that can mesh with the second rack 242 is provided on the second sliding member 240. Alternatively, a second rack 242 can be provided on the second sliding member 240, and a second gear 241 can be provided on the first sliding member 230, both of which can realize the sliding of the second sliding frame relative to the first sliding member 230.

[0063] The transmission is achieved through gears and racks, and driven by a servo motor, so as to precisely control the lifting speed and position of the honeycomb aluminum core block 100.

[0064] Further, please refer to Figure 8 The top of the cleaning tank 500 is provided with an annular air blowing pipe 510, and a plurality of air blowing holes 511 are provided at intervals on the air blowing pipe 510. The air blowing direction of the air blowing holes 511 gradually slopes inward from bottom to top.

[0065] Specifically, an annular air blowing pipe 510 is provided on the top outer edge of the cleaning tank 500. After the honeycomb aluminum core block 100 is cleaned in the cleaning tank 500, the second sliding member 240 drives the honeycomb aluminum core block 100 to move upward to directly above the cleaning tank 500, and then the air blowing hole 511 blows air at an angle of 45° upward to dry the honeycomb aluminum core block 100.

[0066] More importantly, the blowing direction of the air blowing hole 511 is set to be tilted inward at 45° from bottom to top. This allows the blown air to move laterally to enter the multiple horizontally arranged through holes, and also to move vertically to dry the through holes at different heights. Thus, by adjusting the blowing direction, all heights of all through holes on the honeycomb aluminum core block 100 can be dried, preventing water stains from remaining on the surface of the honeycomb aluminum core block 100 and affecting the quality of the finished product.

[0067] Further, please refer to Figures 4-6 The honeycomb aluminum core block 100 has a plurality of through holes arranged along the height direction;

[0068] The clamping plate 210 is provided with a plurality of locking posts 220, and each locking post 220 is provided with at least one deformable elastic block 222, and the maximum width of the elastic block 222 is greater than the maximum width of the through hole.

[0069] The plurality of elastic blocks 222 on the clamping plate 210 can extend into the through hole and abut against the inner wall of the through hole to provide a frictional force greater than or equal to the weight of the honeycomb aluminum core block 100.

[0070] Specifically, this application provides a plurality of locking pins 220 on the clamping plate 210, and elastic blocks 222 on the locking pins 220. The elastic blocks 222 extend into the through hole and deform, thereby generating a pre-tightening force to make the elastic pin abut against the inner wall of the through hole. When the clamping plate 210 is lifted upward, the clamping plate 210 drives the plurality of locking pins 220 to move upward. The frictional force between the elastic blocks 222 and the honeycomb aluminum core block 100 is greater than the weight of the honeycomb aluminum core block 100, so that the honeycomb aluminum core block 100 can be lifted together, thereby achieving clamping of the honeycomb aluminum core block 100, replacing the original solution of clamping by a clamping hand.

[0071] As the chemical reagents continuously etch the honeycomb aluminum core block 100, its wall thickness gradually decreases. At this point, the elastic block 222 releases some deformation to maintain contact with the inner wall of the through-hole, thus providing a frictional force greater than the weight of the honeycomb aluminum core block 100. Simultaneously, as the wall thickness of the honeycomb aluminum core block 100 decreases during the etching process, its structural strength also decreases. However, the continuous release of deformation by the elastic block 222 reduces the compressive force exerted by the elastic block 222 on the honeycomb aluminum core block 100, preventing deformation or even detachment of the honeycomb aluminum core block 100 due to the reduced wall thickness.

[0072] It should be noted that multiple elastic blocks 222 can extend into the through-hole and abut against the inner wall of the through-hole to provide a frictional force greater than or equal to the weight of the honeycomb aluminum core block 100. This can be understood as the sum of the frictional forces between all the elastic blocks 222 extending into the same honeycomb aluminum core block 100 and the honeycomb aluminum core block 100, being greater than or equal to the weight of the honeycomb aluminum core block 100. The frictional force between the elastic blocks 222 and the inner wall of the through-hole is static friction, and the actual magnitude of its total frictional force should always be equal to the weight of the honeycomb aluminum core block 100. Therefore, it should be understood here that the upper limit (maximum static friction) of the frictional force between the elastic blocks 222 and the inner wall of the through-hole must be greater than or equal to the weight of the honeycomb aluminum core block 100.

[0073] Furthermore, the clamping plate 210 is provided with a plurality of parallel through slots 211, and the locking pin 220 can slide along the length direction of the through slots 211;

[0074] The locking post 220 is also provided with a locking sleeve 221, which can abut against the end of the clamping plate 210 away from the honeycomb aluminum core block 100.

[0075] Specifically, first, the clamping plate 210 is moved above the honeycomb aluminum core block 100, so that the locking pin 220 slides along the through groove 211 to the position that coincides with the through hole on the honeycomb aluminum core block 100. Then, the locking pin 220 is pressed into the through hole on the honeycomb aluminum core block 100. Finally, the clamping plate 210 can be lifted, and the clamping plate 210 drives multiple locking pins 220 to move together with the honeycomb aluminum core block 100.

[0076] Furthermore, the elastic block 222 has an upper end face and a lower end face that are opposite to each other, and the elastic block 222 has a plurality of channels 223 that penetrate the upper end face and the lower end face.

[0077] It should be noted that during the etching process, the etching solution needs to enter the through hole to etch the aluminum honeycomb core block. If the elastic block 222 blocks the through hole, the etching solution cannot completely enter the through hole, which will cause the etched aluminum honeycomb core block 100 to fail to meet the preset mechanical properties.

[0078] Based on this, in this embodiment, multiple channels 223 are opened on the elastic block 222, penetrating its upper and lower end faces. These channels 223 allow the etching solution to pass through, thereby filling the through holes with the etching solution to obtain a honeycomb aluminum core block 100 with the required mechanical properties.

[0079] At the same time, setting up channel 223 also facilitates the deformation of elastic block 222, giving it room to deform, so that it can provide sufficient friction without squeezing and deforming the inner wall of the through hole.

[0080] Furthermore, the elastic block 222 is tapered, and the cross-sectional area of ​​the elastic block 222 gradually decreases along the direction in which the elastic block 222 is inserted into the through hole.

[0081] The smaller front end of the elastic block 222 makes it easier to insert into the through hole, thus guiding the elastic block 222 into the through hole.

[0082] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0083] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0084] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0085] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. An etching apparatus for a honeycomb aluminum core block used in simulated automotive crash tests, wherein the honeycomb aluminum core block has at least a first etching area and a second etching area arranged along the height direction, characterized in that, The etching equipment includes: An etching pool, a neutralization pool, and a cleaning pool are arranged sequentially along the length of the etching equipment. The etching pool contains an etching solution for etching the honeycomb aluminum core block. A movable component includes a first slider movable along the length of the etching equipment, and a second slider disposed on the first slider and slidable relative to the first slider along the height direction. The second slider is provided with a clamping plate for connecting a honeycomb aluminum core block. The first slider slides along the length direction to position the honeycomb aluminum core block above any one of the etching tank, the neutralization tank, and the cleaning tank. The second slider slides along the height direction to allow the honeycomb aluminum core block to extend into or retract from any one of the etching tank, the neutralization tank, and the cleaning tank. The second slider is configured to immerse or withdraw the first etching area from the etching solution at a first speed and to immerse or withdraw the second etching area from the etching solution at a second speed, wherein the first speed is greater than or less than the second speed; wherein the etching equipment further includes a zero-point marking component, the zero-point marking component comprising: a first electrode electrically connected to the etching solution; a second electrode electrically connected to the honeycomb aluminum core block; and a PLC chip for marking the height position of the honeycomb aluminum core block as a zero-point height when the first electrode and the second electrode are connected; the first etching area is located at the bottom of the honeycomb aluminum core block, and the height of the first etching area is recorded as a first height; the second etching area is located above the first etching area, and the height of the second etching area is recorded as a second height; when the honeycomb aluminum core block is at the zero-point height, the PLC chip can control the second slider to descend at a first speed to a first height, and then descend at a second speed to a second height.

2. The etching equipment for honeycomb aluminum core blocks used in simulated automotive crash tests according to claim 1, characterized in that, It is also equipped with an air blowing assembly, including an air blowing pipe disposed at the bottom of the etching pool, wherein multiple air holes are provided on the side wall of the air blowing pipe for introducing high-pressure gas into the etching pool.

3. The etching equipment for honeycomb aluminum core blocks used in simulated automotive crash tests according to claim 2, characterized in that, Multiple air blowing pipes are provided at the bottom of the etching pool, and the multiple air blowing pipes are arranged in parallel and spaced apart.

4. The etching equipment for honeycomb aluminum core blocks used in automobile simulated crash tests according to claim 1, characterized in that, An addition pipe for adding reagents is also provided above the etching pool. The addition pipe is configured to add reagents into the etching pool when the reagent concentration of the etching solution is lower than a preset value. A pH sensor is installed in the etching pool to monitor the concentration of the reagents in the etching pool.

5. The etching equipment for honeycomb aluminum core blocks used in simulated automotive crash tests according to claim 1, characterized in that, It also includes a heating assembly, which includes a heating element, and the heating element is connected to a liquid extraction pipe and a liquid discharge pipe, and the liquid extraction pipe and the liquid discharge pipe are simultaneously connected to the etching tank; A temperature sensor is also installed in the etching pool to monitor the temperature of the etching solution in the etching pool.

6. The etching equipment for honeycomb aluminum core blocks used in simulated automotive crash tests according to claim 1, characterized in that, The moving component further includes: a first rack arranged along the length direction of the etching equipment, and a first gear that can mesh with the first rack on the first sliding member; a second rack arranged along the height direction of the etching equipment on the first sliding member, and a second gear that can mesh with the second rack on the second sliding member.

7. The etching equipment for honeycomb aluminum core blocks used in simulated automotive crash tests according to claim 1, characterized in that, The honeycomb aluminum core block has multiple through holes arranged along the height direction; The clamping plate is provided with a plurality of locking posts, and at least one deformable elastic block is provided on each locking post, and the maximum width of the elastic block is greater than the maximum width of the through hole. The plurality of elastic blocks on the clamping plate can extend into the through hole and abut against the inner wall of the through hole to provide a frictional force greater than or equal to the weight of the honeycomb aluminum core block.

8. The etching equipment for honeycomb aluminum core blocks used in simulated automotive crash tests according to claim 7, characterized in that, The elastic block has an upper end face and a lower end face that are opposite to each other, and the elastic block has a plurality of channels that pass through the upper end face and the lower end face.

9. The etching equipment for honeycomb aluminum core blocks used in automobile simulated crash tests according to claim 7, characterized in that, The elastic block is tapered, and its cross-sectional area gradually decreases along the direction in which it is inserted into the through hole.

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