Material cracking simulation device

Abstract

The utility model discloses a material cracking simulation device, relates to coating performance test technical field, said material cracking simulation device includes fixed platform, vibration platform, base, spacing mechanism and elastic piece, fixed platform abuts against one side of vibration platform, vibration platform is provided above the base, and the spacing mechanism is provided above the base. One end of the elastic piece is fixedly connected with the vibration platform, the other end of the elastic piece is fixedly connected with the base, the vibration platform is provided with a connecting part and a spraying part, the spraying part corresponds to the fixed platform, and a vibration motor is arranged on the lower surface of the spraying part. According to the utility model, the vibration platform vibrates through the vibration motor to simulate the stress released by the metal plate during baking, a simulation test can be carried out before actual production of a product, the material performance is optimized according to a test result to avoid paint cracking in actual production, the quality and reliability of the paint are ensured, production waste is avoided, the production efficiency is improved, and the production cost is reduced. The technical problem that the stress condition of a test material cannot be simulated at present is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating performance testing, and more specifically, to a material cracking simulation device. Background Art

[0002] The plastisol on the automotive sheet metal has good protection, playing roles such as sound insulation, anti-noise, anti-corrosion, and anti-stone impact protection for the automotive sheet metal. The plastisol needs to be heated and cured after being sprayed or coated on the sheet metal. During the production process of sheet metal forming, processes such as shearing, bending, stamping, and welding will generate residual stresses on the sheet metal. These stresses are reactivated and redistributed during the subsequent baking process, which will have a certain impact on the structure of the sheet metal. Part of the stresses are borne by the coating, and the coating on the surface of the sheet metal will also shrink by a certain volume during the baking process. The coating is subjected to stresses and shrinkage, resulting in cracking of the coating after baking, and subsequent repair is required, seriously affecting the production quality and production efficiency.

[0003] Traditional mechanical data testing of plastisol is carried out after the material is cured to make samples for testing. However, actual cracking occurs during the baking process. Therefore, it is necessary to simulate the stress-bearing situation of plastisol during the baking stage, and optimize the material properties through simulation testing before production to avoid production waste. At present, there is no device that can simulate the cracking of materials caused by the stress release of the sheet metal of plastisol during the baking stage. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides a material cracking simulation device, which can simulate the cracking of materials under the stress released by the sheet metal during the baking stage, and solves the technical problem that there is no suitable device to simulate and test the stress-bearing situation of materials at present.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: A material cracking simulation device, including: a fixed platform, a vibration platform, a base, a limiting mechanism, and an elastic member. One side of the fixed platform abuts against the vibration platform. The vibration platform is arranged above the base. One end of the elastic member is fixedly connected to the vibration platform, and the other end of the elastic member is fixedly connected to the base. The vibration platform is provided with a connecting portion and a spraying portion. The spraying portion is arranged corresponding to the fixed platform, and a vibration motor is arranged on the lower surface of the spraying portion. The limiting mechanism includes a guide post, a first limiting block, and a second limiting block. The lower end of the guide post is fixedly connected to the base, the upper end of the guide post passes through the connecting portion, the connecting portion can slide up and down relative to the guide post, the first limiting block and the second limiting block can be slidably sleeved on the guide post, the first limiting block is arranged above the vibration platform, and the second limiting block is arranged below the vibration platform.

[0006] Optionally, a reduction motor is provided below the fixed platform. The output end of the reduction motor is connected to a lead screw. A threaded hole is formed in one side of the base close to the fixed platform, and the lead screw is in threaded connection with the threaded hole.

[0007] Optionally, a slide rail and a plurality of sliders are provided below the base. The slide rail is arranged parallel to the lead screw. The sliders are in sliding fit with the slide rail, and the sliders are fixedly connected to the bottom of the base.

[0008] Optionally, a driving motor and a screw rod are provided on the base. The output end of the driving motor is connected to the screw rod. The driving motor is used to drive the screw rod to rotate. The upper end of the screw rod passes through the connecting portion. A first thread is provided on the section of the screw rod above the connecting portion, and a second thread is provided on the section of the screw rod below the connecting portion. The spiral directions of the first thread and the second thread are opposite. The screw rod is in threaded connection with a first sleeve and a second sleeve. The internal thread of the first sleeve is in threaded connection with the first thread, and the internal thread of the second sleeve is in threaded connection with the second thread. The first limiting block is connected to the first sleeve, and the second limiting block is connected to the second sleeve.

[0009] Optionally, the first sleeve is fixedly connected to a first connecting rod, and one end of the first connecting rod away from the first sleeve is fixedly connected to the first limiting block. The second sleeve is fixedly connected to a second connecting rod, and one end of the second connecting rod away from the second sleeve is fixedly connected to the second limiting block.

[0010] Optionally, the connecting portions are symmetrically arranged at both ends of the spraying portion in the width direction. The guiding columns are symmetrically arranged at both ends of the connecting portion in the length direction.

[0011] Optionally, a plurality of elastic members are provided. The plurality of elastic members are arranged in an array between the vibrating platform and the base.

[0012] Optionally, the elastic member is a spring.

[0013] In the utility model, the vibrating platform generates vibration through a vibration motor. When the vibrating platform vibrates, it reciprocates up and down relative to the fixed platform. The paint coated between the spraying portion and the fixed platform is subjected to the force brought by the vibration to simulate the stress released by the sheet metal during baking. The limiting mechanism limits the amplitude of the vibrating platform, and the magnitude of the simulated stress can be controlled. The simulation device can set the amplitude of the vibrating platform according to different paints for simulation tests, and can conduct simulation tests before actual production of the product, obtain test results and optimize the material properties to avoid paint cracking in actual production, ensure the quality and reliability of the paint, avoid production waste, and improve production efficiency. Description of the Drawings

[0014] The accompanying drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the accompanying drawings:

[0015] Figure 1 is the front view of the material cracking simulation device according to an embodiment of the present utility model;

[0016] Figure 2 is the top view of the material cracking simulation device according to an embodiment of the present utility model;

[0017] Figure 3 is the schematic diagram of the cooperation structure of the base, slide rail and slider of the material cracking simulation device according to an embodiment of the present utility model.

[0018] Explanation of the reference numerals in the accompanying drawings: 1. Fixed platform; 2. Vibration platform; 201. Connecting part; 202. Spraying part; 203. Vibration motor; 3. Base; 301. Driving motor; 302. Screw; 3021. First thread; 3022. Second thread; 3023. First sleeve; 3024. Second sleeve; 3025. First connecting rod; 3026. Second connecting rod; 303. Threaded hole; 4. Limiting mechanism; 401. Guide post; 402. First limiting block; 403. Second limiting block; 5. Elastic member; 6. Reduction motor; 601. Lead screw; 7. Slide rail; 701. Slide block; Detailed implementation manners

[0019] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0020] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limited conditions for the implementation of the present utility model. Therefore, they do not have a technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of narration and are not used to limit the scope for the implementation of the present utility model. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope for the implementation of the present utility model. The specific structure can be described with reference to the drawings of the patent application.

[0021] To solve the above technical problems, the utility model discloses a material cracking simulation device, as Figure 1 and 2 shown, which includes a fixed platform 1, a vibrating platform 2, a base 3, a limiting mechanism 4 and an elastic member 5. One side of the fixed platform 1 abuts against the vibrating platform 2. The vibrating platform 2 is arranged above the base 3. One end of the elastic member 5 is fixedly connected to the vibrating platform 2, and the other end of the elastic member 5 is fixedly connected to the base 3. The vibrating platform 2 is provided with a connecting portion 201 and a spraying portion 202. The spraying portion 202 is arranged corresponding to the fixed platform 1, and a vibrating motor 203 is arranged on the lower surface of the spraying portion 202; the limiting mechanism 4 includes a guiding column 401, a first limiting block 402 and a second limiting block 403. The lower end of the guiding column 401 is fixedly connected to the base 3, the upper end of the guiding column 401 passes through the connecting portion 201, and the connecting portion 201 can slide up and down relative to the guiding column 401. The first limiting block 402 and the second limiting block 403 are slidably sleeved on the guiding column 401. The first limiting block 402 is arranged above the vibrating platform 2, and the second limiting block 403 is arranged below the vibrating platform 2.

[0022] Working principle: When the vibrating motor 203 is not started, the elastic member 5 is in a compressed state under the self-weight of the vibrating motor 203. Specifically, the upper surface of the spraying portion 202 of the vibrating platform 2 is flush with the upper surface of the fixed platform 1. The paint is coated on the upper surfaces of the spraying portion 202 and the fixed platform 1, and the paint is coated at the position between the spraying portion 202 and the fixed platform 1, as Figure 2 shown. The position of the dotted line frame is the position where the paint is coated. Place this material cracking simulation device in a baking equipment, the baking temperature is about 100 degrees Celsius, and the motor attached to the device will not be affected by the temperature. During the baking stage, when the vibrating motor 203 works, it generates vibrations. The guiding column 401 guides the vibrating platform 2, so that the vibrating platform 2 can only move up and down relative to the guiding column 401. The vibrating platform 2 generates reciprocating up and down vibrations under the vibration of the vibrating motor 203. The upper surface of the spraying portion 202 generates up and down offsets relative to the upper surface of the fixed platform 1. The paint on the spraying portion 202 is subjected to a vertical pulling force to simulate the residual stress released by the sheet metal during the baking process. By respectively adjusting the distances between the first limiting block 402 and the second limiting block 403 and the vibrating platform 2, the maximum amplitude of the vibrating platform 2 in the vertical direction can be limited, and the magnitude of the simulated stress can be controlled. The simulation device can set the amplitude of the vibrating platform 2 according to different sheet metals and paints for simulation tests. Optimize the material according to the test results to avoid cracking of the paint during baking in actual production, ensure the quality and reliability of the paint, avoid production waste, and improve production efficiency.

[0023] Further, as Figure 1 and 3As shown, in an embodiment of the present utility model, a reduction motor 6 is provided below the fixed platform 1. The output end of the reduction motor 6 is connected to a lead screw 601. A threaded hole 303 is provided on one side of the base 3 close to the fixed platform 1. The lead screw 601 is threadedly connected to the threaded hole 303.

[0024] The reduction motor 6 is arranged below the fixed platform 1. The reduction motor 6 drives the lead screw 601 to rotate. The lead screw 601 passes through between the support feet of the fixed platform 1 and extends to the base 3. The lead screw 601 is threadedly connected to the threaded hole 303. When the reduction motor 6 works, the distance between the base 3 and the fixed platform 1 can be changed under the action of the lead screw 601. The paint on the spraying part 202 and the fixed platform 1 is subjected to a tensile force in the horizontal direction to simulate the residual stress released by the sheet metal during the baking process.

[0025] The reduction motor 6 has a large torque and can drive a device with a large load. When simulating sheet metal stress, precise control is required. The reduction motor 6 can precisely control the rotation speed of the lead screw 601, thereby controlling the magnitude of the simulated stress. The simulation device can set the moving speed and moving direction of the base 3 according to different paints for simulation tests.

[0026] The vibration motor 203 applies a vibration effect to the vibration platform 2. The reduction motor 6 moves the base 3 relative to the fixed platform 1, which can respectively simulate the vertical stress, horizontal stress, and the stress of the superposition of the two directions released by the sheet metal during the baking process. It can simulate the stress generated in different directions and precisely control the magnitude of the stress, making the coverage range of the simulation test larger and the accuracy higher.

[0027] Further, as Figures 1 to 3 shown, in an embodiment of the present utility model, a slide rail 7 and a plurality of sliders 701 are provided below the base 3. The slide rail 7 is arranged parallel to the lead screw 601. The slider 701 is slidably engaged with the slide rail 7. The slider 701 is fixedly connected to the bottom of the base 3.

[0028] The base 3 is fixedly connected to the slider 701. The base 3 can move along the slide rail 7 with the slider 701, making the movement of the base 3 relative to the fixed platform 1 smoother, reducing friction, and enabling more precise control of the distance between the base 3 and the fixed platform 1 under the drive of the reduction motor 6 and the lead screw 601.

[0029] Further, as Figure 1As shown in the figure, in an embodiment of the present utility model, a driving motor 301 and a screw rod 302 are arranged on a base 3. The output end of the driving motor 301 is connected to the screw rod 302. The driving motor 301 is used to drive the screw rod 302 to rotate. The upper end of the screw rod 302 passes through a connecting portion 201. A first thread 3021 is provided on the section of the screw rod 302 above the connecting portion 201, and a second thread 3022 is provided on the section of the screw rod 302 below the connecting portion 201. The spiral directions of the first thread 3021 and the second thread 3022 are opposite. The screw rod 302 is threadedly connected with a first sleeve 3023 and a second sleeve 3024. The internal thread of the first sleeve 3023 is threadedly connected with the first thread 3021, and the internal thread of the second sleeve 3024 is threadedly connected with the second thread 3022. A first limiting block 402 is connected to the first sleeve 3023, and a second limiting block 403 is connected to the second sleeve 3024.

[0030] The spiral directions of the first thread 3021 and the second thread 3022 are opposite. When the screw rod 302 rotates, the first sleeve 3023 and the second sleeve 3024 respectively threadedly connected with the first thread 3021 and the second thread 3022 will approach or move away from the connecting portion 201 simultaneously. The first sleeve 3023 is connected to the first limiting block 402, and the second sleeve 3024 is connected to the second limiting block 403. When the screw rod 302 rotates, the first limiting block 402 and the second limiting block 403 will approach or move away from the connecting portion 201 simultaneously with the first sleeve 3023 and the second sleeve 3024, thereby adjusting the distances between the first limiting block 402, the second limiting block 403 and the connecting portion 201 to limit the maximum amplitude of the vibration platform 2 in the vertical direction.

[0031] The driving motor 301 can control the output speed and torque, and can achieve seamless and smooth acceleration. During the baking process, personnel can remotely control the speed and rotation direction of the driving motor 301, and can remotely adjust the maximum amplitude of the vibration platform 2 in the vertical direction at any time during the baking process, avoiding personnel approaching the baking equipment and improving the operation safety.

[0032] Preferably, when the elastic member 5 is in a compressed state under the self-weight of the vibration motor 203 when the vibration motor 203 is not started, the distances between the first limiting block 402 and the second limiting block 403 and the vibration platform 2 are equal, symmetrically limiting the maximum amplitude of the vibration platform 2 up and down to make the vibration of the vibration platform 2 more stable.

[0033] Further, as Figure 1As shown in the figure, in an embodiment of the present utility model, a first connecting rod 3025 is fixedly connected to the first sleeve 3023, and one end of the first connecting rod 3025 away from the first sleeve 3023 is fixedly connected to the first limiting block 402; a second connecting rod 3026 is fixedly connected to the second sleeve 3024, and one end of the second connecting rod 3026 away from the second sleeve 3024 is fixedly connected to the second limiting block 403.

[0034] The first connecting rod 3025 connects the first sleeve 3023 and the first limiting block 402. When the screw 302 rotates to raise or lower the first sleeve 3023, it drives the first limiting block 402 to rise or fall; the second connecting rod 3026 connects the second sleeve 3024 and the second limiting block 403. When the screw 302 rotates to raise or lower the second sleeve 3024, it drives the second limiting block 403 to rise or fall, so that the first sleeve 3023 and the first limiting block 402, the second sleeve 3024 and the second limiting block 403 move synchronously, improving the stability and accuracy of the limiting mechanism 4.

[0035] Further, as Figure 2 shown in the figure, in an embodiment of the present utility model, connecting parts 201 are symmetrically arranged at both ends of the spraying part 202 in the width direction; guiding columns 401 are symmetrically arranged at both ends of the connecting parts 201 in the length direction.

[0036] Connecting parts 201 are symmetrically arranged at both ends of the spraying part 202, and guiding columns 401 are symmetrically arranged on the connecting parts 201. Guiding columns 401 are provided at the four corners of the vibrating platform 2. When the vibrating platform 2 vibrates up and down, the guiding is more stable, and the limiting blocks on the guiding columns 401 can simultaneously limit the maximum amplitude of the vibrating platform 2 in the vertical direction, avoiding the skew of the vibrating platform 2 during vibration and preventing uncontrollable external forces from affecting the simulation test.

[0037] Further, as Figure 1 shown in the figure, in an embodiment of the present utility model, a plurality of elastic members 5 are provided, and the plurality of elastic members 5 are arranged in an array between the vibrating platform 2 and the base 3.

[0038] The elastic members 5 are arranged in an array between the vibrating platform 2 and the base 3, so that the vibrating platform 2 has multiple support points. When the vibrating motor 203 applies vibration, the force generated by the vibration can be evenly distributed to the multiple elastic members 5, making the vibration of the vibrating platform 2 more stable.

[0039] Further, as Figure 1 shown in the figure, in an embodiment of the present utility model, the elastic member 5 is a spring.

[0040] The structure of the spring is simple and the reliability is high. The spring can be quickly deformed when subjected to an external force and can immediately return to its original state after the external force is removed, ensuring good stability and durability of the spring under continuous working conditions.

[0041] The above embodiments are only illustrative of the principles and effects of the present utility model and are not intended to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A material cracking simulation device, characterized in that, It includes a fixed platform, a vibrating platform, a base, a limiting mechanism and an elastic member. The fixed platform abuts against one side of the vibrating platform. The vibrating platform is arranged above the base. One end of the elastic member is fixedly connected to the vibrating platform, and the other end of the elastic member is fixedly connected to the base. The vibrating platform is provided with a connecting portion and a spraying portion. The spraying portion is arranged corresponding to the fixed platform, and a vibrating motor is arranged on the lower surface of the spraying portion. The limiting mechanism includes a guiding column, a first limiting block and a second limiting block. The lower end of the guiding column is fixedly connected to the base. The upper end of the guiding column passes through the connecting portion, and the connecting portion can slide up and down relative to the guiding column. The first limiting block and the second limiting block are slidably sleeved on the guiding column. The first limiting block is arranged above the vibrating platform, and the second limiting block is arranged below the vibrating platform.

2. The material cracking simulation device according to claim 1, characterized in that, A reduction motor is arranged below the fixed platform. The output end of the reduction motor is connected with a lead screw. A threaded hole is formed in one side of the base close to the fixed platform, and the lead screw is in threaded connection with the threaded hole.

3. The material cracking simulation device according to claim 2, characterized in that, A slide rail and a plurality of sliders are arranged below the base. The slide rail is arranged parallel to the lead screw, and the sliders are in sliding fit with the slide rail. The sliders are fixedly connected to the bottom of the base.

4. The material cracking simulation device according to claim 1, wherein A driving motor and a screw rod are arranged on the base. The output end of the driving motor is connected with the screw rod. The driving motor is used to drive the screw rod to rotate. The upper end of the screw rod passes through the connecting portion. A first thread is arranged on the section of the screw rod above the connecting portion, and a second thread is arranged on the section of the screw rod below the connecting portion. The spiral directions of the first thread and the second thread are opposite. The screw rod is in threaded connection with a first sleeve and a second sleeve. The internal thread of the first sleeve is in threaded connection with the first thread, and the internal thread of the second sleeve is in threaded connection with the second thread. The first limiting block is connected to the first sleeve, and the second limiting block is connected to the second sleeve.

5. The material cracking simulation device according to claim 4, wherein The first sleeve is fixedly connected with a first connecting rod, and one end of the first connecting rod far away from the first sleeve is fixedly connected to the first limiting block. The second sleeve is fixedly connected with a second connecting rod, and one end of the second connecting rod far away from the second sleeve is fixedly connected to the second limiting block.

6. The material cracking simulation device according to claim 4, characterized in that, The connecting portions are symmetrically arranged at both ends of the spraying portion in the width direction. The guiding columns are symmetrically arranged at both ends of the connecting portion in the length direction.

7. A material cracking simulation device according to claim 1, characterized in that, A plurality of elastic members are provided, and the plurality of elastic members are arranged in an array between the vibrating platform and the base.

8. A material cracking simulation device according to claim 1, characterized in that, The elastic member is a spring.

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