Plastic product strength detection device and detection method

Abstract

The present invention discloses a plastic product strength detection device and detection method, which relate to the field of strength detection. The detection device includes a detection platform, which is provided with a positioning module for positioning a bumper body to be detected; the detection platform is also provided with a strength detection module for performing strength detection on the positioned bumper body, and the strength detection module includes an upper detection mechanism and a lower detection mechanism, and the upper detection mechanism and the lower detection mechanism both include a plurality of detection end heads arranged in an array along a horizontal direction; the detection platform is also provided with a driving module, and the driving module is used to drive each detection end head to move toward or away from the positioning module; the detection platform is also provided with a first adjustment part and a second adjustment part; the present invention uses the detection end head to impact the bumper body to simulate the impact of the bumper body on the bumper body during actual driving.

Description

Technical Field

[0001] The present invention relates to the field of strength detection, and in particular to a plastic product strength detection device and a detection method. Background Art

[0002] Bumpers are installed at both the front and rear ends of a vehicle. The bumper is the first point of contact between the vehicle and a pedestrian in a collision, and its strength directly affects the severity of injury to pedestrians. Insufficient bumper strength can cause excessive deformation or cracking during a collision, failing to effectively cushion the impact and increasing the risk of pedestrian injury. In low-speed collisions, the bumper must absorb and disperse energy to minimize damage to the vehicle structure. Strength testing ensures that the bumper maintains its structural integrity during a collision, preventing secondary damage to other vehicle components.

[0003] Bumpers may be subject to minor impacts during daily use, such as scrapes while parking and collisions with small animals. Strength testing ensures that bumpers can withstand these daily impacts, avoiding frequent repairs or replacements. Strength testing can also assess the bumper's fatigue life and durability over long-term use, ensuring stable performance throughout the vehicle's lifecycle.

[0004] When a car bumper collides with different objects, the contact area and impact position of the bumper are different. If a single contact surface object or a fixed position is used to test the bumper's impact strength, the bumper strength test result is relatively one-sided and it is impossible to comprehensively test the bumper's strength. At present, if the bumper is hit by impact objects with different contact areas and at different positions, multiple devices need to be used in coordination, which not only reduces the efficiency of the bumper strength test, but also increases the cost of the bumper impact test and makes the bumper strength test steps complicated. Summary of the Invention

[0005] The present invention provides a plastic product strength detection device and detection method, which can solve the technical problem in the prior art that when a bumper is impacted by impact objects with different contact areas and impacts at different positions, multiple devices need to be used in coordination, which not only reduces the strength detection efficiency of the bumper but also increases the impact detection cost of the bumper.

[0006] A plastic product strength testing device comprises a testing platform, wherein the testing platform is provided with a positioning module for positioning a bumper body to be tested;

[0007] The testing platform is also provided with a strength detection module for performing strength detection on the positioned bumper body. The strength detection module includes an upper detection mechanism and a lower detection mechanism. The upper detection mechanism and the lower detection mechanism each include a plurality of detection terminals arranged in an array in a horizontal direction. The testing platform is also provided with a drive module for driving each detection terminal to move toward or away from the positioning module.

[0008] The detection platform is further provided with a first adjustment portion and a second adjustment portion. The first adjustment portion is used to adjust the distance between the upper detection mechanism and the lower detection mechanism, and the second adjustment portion is used to adjust the distance between two groups of adjacent detection ends.

[0009] Preferably, the detection platform is symmetrically provided with a top plate and a bottom plate in the vertical direction, the upper detection mechanism is arranged on the top plate and leans against one side of the bottom plate, the lower detection mechanism is arranged on the bottom plate and leans against one side of the top plate, at least one group of sleeves is arranged on the bottom plate, and a telescopic rod fixed to the top plate is slidingly inserted on the sleeve, and the first adjustment part includes a lifting cylinder fixed to the top plate, and the driving end of the lifting cylinder is fixed to the bottom plate.

[0010] Preferably, the detection end is fixed to the detection rod on a side away from the positioning module;

[0011] Among them, one end of each detection rod away from the detection end is slidably connected with the first positioning seat and the second positioning seat respectively, the first positioning seat and the second positioning seat are fixed on the sliding plate at intervals, one side of the sliding plate is slidably connected to the top plate, and the other side of the sliding plate is slidably connected to the bottom plate. A first positioning plate and a second positioning plate are also arranged on the detection rod located between the first positioning seat and the second positioning seat. The first positioning plate is slidably sleeved on the detection rod, and the second positioning plate is fixed on the detection rod. A first spring is also provided on the detection rod.

[0012] Preferably, a horizontal cylinder is fixedly arranged on one side of the top plate and the bottom plate respectively, and a limit plate is fixedly arranged on the driving end of the horizontal cylinder;

[0013] Wherein, the limit plate is provided with a plurality of groups of inclined guide grooves corresponding to the detection rods one by one, and a guide shaft fixed to the sliding plate is slidably embedded in the inclined guide groove.

[0014] Preferably, the detection platform is provided with a support plate, on which two groups of limit rods are symmetrically fixedly arranged, and the sliding sleeves on the limit rods are provided with supports fixedly connected to the bottom plate.

[0015] Preferably, two groups of baffles are symmetrically fixed on one side of the support plate, and driving gears are rotatably arranged on the baffles. First racks are arranged on both sides of the driving gears in parallel and staggered manner. One group of first racks is fixed to the top plate, and the other group of first racks is fixed to the bottom plate.

[0016] Preferably, the driving module includes a second rack fixed to the bottom of the support plate, and also includes a first half gear, a second half gear and a third half gear arranged on the detection platform in an equidistant rotation manner, the first half gear is fixed to the output end of the first servo motor fixed to the bottom of the detection platform, the second half gear is fixed to the output end of the second servo motor fixed to the bottom of the detection platform, and the third half gear is fixed to the output end of the third servo motor fixed to the bottom of the detection platform;

[0017] Wherein, an elastic module is provided on the detection platform, and the elastic module is connected to the support plate.

[0018] Preferably, the elastic module includes guide seats fixed to both sides of the base plate, the guide seats on both sides are slidably mounted on the support shaft, and L-shaped brackets are fixedly arranged at both ends of the support shaft, and each L-shaped bracket is slidably mounted on the positioning shaft, and the positioning shaft is fixed on the detection table;

[0019] Wherein, a second spring is provided on the support shaft.

[0020] Preferably, the positioning module includes a positioning platform fixed to one side of the testing platform, an adjusting cylinder is fixedly arranged on the positioning platform, the driving end of the adjusting cylinder is fixed to the T-shaped plate, and at least two sets of clamps are fixedly arranged on the T-shaped plate toward the testing platform for clamping the reinforcing ribs on the back side of the bumper body.

[0021] A testing method for a plastic product strength testing device, applied to the aforementioned plastic product strength testing device, comprises the following steps:

[0022] Position and fix the bumper body to be tested on one side of the test bench through the positioning module;

[0023] The drive module drives each detection end to move away from the bumper body. When it moves to the corresponding position, it drives the detection end to move toward the bumper body, and the detection end hits the bumper body to simulate the impact of the car on the bumper body during actual driving.

[0024] During the initial test, the distance between the upper and lower detection mechanisms is minimal, and the distance between the two sets of detection terminals is minimal. The detection terminals of the upper and lower detection mechanisms are in a state of being gathered together. The gathered detection terminals can simulate the effect of a car bumper body being hit by a small object during actual use.

[0025] After the preliminary detection, the first adjustment part drives the upper detection mechanism and the lower detection mechanism to move away from each other by a certain distance, and the second adjustment part drives each detection end to move away from each other, diffusing the detection ends. The detection ends in the diffused state can simulate the effect when the car bumper body is hit by a large object during actual application.

[0026] The present invention provides a plastic product strength detection device, which has the following beneficial effects:

[0027] 1) When performing strength testing on a bumper body, the present invention first drives each testing end head through a drive module to move away from the bumper body. When the testing end head reaches the corresponding position, the testing end head is then driven toward the bumper body. The testing end head impacts the bumper body, simulating the impact of a car on the bumper body during actual driving. This provides a more realistic testing result, thereby improving the stability of bumper body production quality.

[0028] 2) After the bumper body of the present invention is positioned, in the initial state, the distance between the upper detection mechanism and the lower detection mechanism is minimized, and the distance between the two groups of detection terminals is minimized. Therefore, the detection terminals of the upper detection mechanism and the lower detection mechanism are in a state of being gathered together. During testing, the detection terminals in the gathered state can simulate the effect of the automobile bumper body being hit by a smaller object during actual use. Accordingly, after the automobile bumper body under this working condition is tested, the first adjustment part drives the upper detection mechanism and the lower detection mechanism to be separated from each other by a certain distance. At the same time, the second adjustment part drives the detection terminals to be separated from each other to increase the distance between the two adjacent detection terminals, thereby achieving the effect of spreading the detection terminals. During the testing process, the detection terminals in the spread state can simulate the effect of the automobile bumper body being hit by a larger object during actual use. Accordingly, the present invention can adjust the spread distance of the detection terminals multiple times through the cooperation of the first adjustment part and the second adjustment part, thereby simulating the effect of the automobile bumper body being hit by objects of different volumes, so that the test results are more consistent with the actual accident situation, the test results are more complete, and the stability of product quality is ensured;

[0029] 3) When the lifting cylinder of the present invention adjusts the distance between the top plate and the bottom plate, the top plate and the bottom plate can respectively drive the first rack to move. Since the two sets of first racks are engaged with the driving gear, the movement distances of the two sets of first racks always remain equal, thereby ensuring that the rising distance of the top plate and the descending distance of the bottom plate remain consistent. Accordingly, the detection terminals on the upper and lower sides achieve a uniform diffusion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the structure of a plastic product strength detection device provided by the present invention Figure 1 ;

[0031] Figure 2 A schematic diagram of the structure of a plastic product strength detection device provided by the present invention Figure 2 ;

[0032] Figure 3A schematic diagram of the structure of a plastic product strength detection device provided by the present invention Figure 3 ;

[0033] Figure 4 A schematic diagram of the top view of a plastic product strength detection device provided by the present invention;

[0034] Figure 5 A schematic diagram of the structure of a strength detection module in a plastic product strength detection device provided by the present invention Figure 1 ;

[0035] Figure 6 This is a schematic cross-sectional view of a strength detection module in a plastic product strength detection device provided by the present invention;

[0036] Figure 7 This is a structural schematic diagram of a guide shaft in a plastic product strength detection device provided by the present invention moving in an inclined guide groove;

[0037] Figure 8 A schematic diagram of the structure of a strength detection module in a plastic product strength detection device provided by the present invention Figure 2 ;

[0038] Figure 9 This is a schematic diagram of the top structure of a strength detection module in a plastic product strength detection device provided by the present invention.

[0039] Description of reference numerals:

[0040] 1. Inspection platform; 2. Support plate; 3. Bumper body; 4. Upper inspection mechanism; 5. First half gear; 6. Top plate; 101. Slide rail; 102. Positioning shaft; 103. L-shaped bracket; 104. Positioning platform; 201. Slide bar; 202. Support shaft; 203. Guide seat; 204. Second spring; 301. T-shaped plate; 302. Adjusting cylinder; 303. Clamp; 401. Lower inspection mechanism; 402. Inspection end; 403. Inspection rod; 404. Sliding plate; 405. Limit plate; 406. Inclined guide groove; 407. Guide shaft; 408. 8. First positioning plate; 409. First positioning seat; 410. First spring; 411. Second positioning plate; 412. Second positioning seat; 501. Second half gear; 502. Third half gear; 503. First servo motor; 504. Second servo motor; 505. Third servo motor; 601. Base plate; 602. Sleeve; 603. Telescopic rod; 604. Lifting cylinder; 605. Horizontal cylinder; 606. First rack; 607. Drive gear; 608. Baffle; 609. Support; 610. Limit rod; 611. Second rack. DETAILED DESCRIPTION

[0041] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0042] Example 1

[0043] like Figure 1-Figure 2 As shown, an embodiment of the present invention provides a plastic product strength testing device, including a testing platform 1, on which a positioning module is provided for positioning a bumper body 3 to be tested. Specifically, when performing strength testing on a car bumper, the present embodiment positions and fixes the bumper body 3 to be tested on one side of the testing platform 1 through the positioning module to facilitate subsequent testing and processing.

[0044] In this embodiment, please refer to Figure 3-Figure 4 , a strength detection module is also arranged on the testing platform 1 for performing strength detection on the bumper body 3 after positioning, wherein the strength detection module includes an upper detection mechanism 4 and a lower detection mechanism 401, and the upper detection mechanism 4 and the lower detection mechanism 401 each include a plurality of detection terminals 402 arranged in an array in a horizontal direction, and a driving module is also arranged on the testing platform 1, and the driving module is used to drive each detection terminal 402 to move toward or away from the positioning module;

[0045] Specifically, in this embodiment, the upper detection mechanism 4 and the lower detection mechanism 401 are each provided with four sets of detection terminals 402. In this embodiment, the specific number of detection terminals 402 in each detection mechanism is not limited and can be set accordingly based on the detection range of the bumper body 3 to be detected.

[0046] In addition, in this embodiment, a pressure sensor is fixedly arranged on each detection end 402. During detection, the pressure value when the detection end 402 contacts the bumper body 3 can be measured in real time, thereby ensuring the detection accuracy. At the same time, the detection intensity can be adjusted in real time based on the pressure value to achieve a full detection effect.

[0047] It can be explained that, in this embodiment, when performing strength testing on the bumper body 3, each detection end 402 is first driven by the driving module to move in a direction away from the bumper body 3. When it moves to the corresponding position, the detection end 402 is driven to move in the direction of the bumper body 3. The bumper body 3 is impacted by the detection end 402 to simulate the impact of the bumper body 3 on the car during actual driving. The detection effect is more in line with the actual situation, thereby improving the stability of the production quality of the bumper body 3.

[0048] It should be noted that the pressure sensor of this embodiment can adopt KP200 pressure sensor or MPX series pressure sensor. This embodiment does not limit its specific model, as long as the pressure detection requirements are met.

[0049] As a further solution of this embodiment, the detection platform 1 is further provided with a first adjustment portion and a second adjustment portion. The first adjustment portion is used to adjust the distance between the upper detection mechanism 4 and the lower detection mechanism 401, and the second adjustment portion is used to adjust the distance between two sets of adjacent detection terminals 402.

[0050] It can be explained that after the positioning of the bumper body 3 is completed, in the initial state, the distance between the upper detection mechanism 4 and the lower detection mechanism 401 is the smallest, and the distance between the two sets of detection terminals 402 is the smallest. Therefore, the detection terminals 402 of the upper detection mechanism 4 and the lower detection mechanism 401 are in a state of being gathered together. During the detection, the detection terminals 402 in the gathered state can simulate the effect when the automobile bumper body 3 is hit by a smaller object during actual application. Accordingly, after the detection of the automobile bumper body 3 under this working condition is completed, the first adjustment part drives the upper detection mechanism 4 and the lower detection mechanism 401 to be away from each other by a certain distance. At the same time, the second adjustment part drives the upper detection mechanism 4 and the lower detection mechanism 401 to be away from each other by a certain distance. The first adjusting portion drives the detection ends 402 to move away from each other to increase the distance between the two adjacent detection ends 402, thereby achieving the effect of diffusing the detection ends 402. During the detection process, the detection ends 402 in a diffused state can simulate the effect when the automobile bumper body 3 is hit by a larger object during actual application. Accordingly, this embodiment can adjust the diffusion distance of each detection end 402 multiple times through the cooperation of the first adjusting portion and the second adjusting portion, thereby simulating the effect when the automobile bumper body 3 is hit by objects of different volumes, so that the test results are more in line with the actual accident situation, the test results are more complete, and the stability of product quality is guaranteed.

[0051] Example 2

[0052] Based on Example 1, please refer to Figure 3-Figure 5 , the detection platform 1 is symmetrically provided with a top plate 6 and a bottom plate 601 in the vertical direction, the upper detection mechanism 4 is arranged on the top plate 6 and is close to the side of the bottom plate 601, and the lower detection mechanism 401 is arranged on the bottom plate 601 and is close to the side of the top plate 6, and at least one group of sleeves 602 is arranged on the bottom plate 601, and a telescopic rod 603 fixed to the top plate 6 is slidably inserted on the sleeve 602, and the first adjustment part includes a lifting cylinder 604 fixed on the top plate 6, and the driving end of the lifting cylinder 604 is fixed to the bottom plate 601; it can be explained that when adjusting the distance between the upper detection mechanism 4 and the lower detection mechanism 401, this embodiment can drive the top plate 6 and the bottom plate 601 away from each other through the lifting cylinder 604, and the top plate 6 and the bottom plate 601 can synchronously drive the upper detection mechanism 4 and the lower detection mechanism 401 to move during the movement, so as to adjust the distance between the two.

[0053] In this embodiment, each detection end 402 is fixed to the detection rod 403 on one side away from the positioning module, wherein each detection rod 403 is slidably plugged into the first positioning seat 409 and the second positioning seat 412 at one end away from the detection end 402, and the first positioning seat 409 and the second positioning seat 412 are fixed on the sliding plate 404 at intervals, one side of the sliding plate 404 is slidably connected to the top plate 6, and the other side of the sliding plate 404 is slidably connected to the bottom plate 601, and the detection rod 403 located between the first positioning seat 409 and the second positioning seat 412 is also provided with a first positioning disk 408 and a second positioning disk 411, and the first positioning disk 408 is slidably sleeved on the detection rod 403 On the top, the second positioning plate 411 is fixed on the detection rod 403, and the detection rod 403 is also provided with a first spring 410, one end of the first spring 410 is fixed to the first positioning plate 408, and the other end is fixed to the second positioning plate 411; it can be explained that when the driving module drives each detection terminal 402 to move toward the direction of the bumper body 3 to impact it, after the impact is completed, the detection terminal 402 can drive the detection rod 403 to move a distance away from the bumper body 3. Based on the setting of the first spring 410, a buffering effect can be given to the detection terminal 402 to protect the detection terminal 402 and the pressure sensor and extend their service life.

[0054] As a further solution of this embodiment, please refer to Figure 6-Figure 9 , a horizontal cylinder 605 is fixedly arranged on one side of the top plate 6 and the bottom plate 601, and a limit plate 405 is fixedly arranged on the driving end of the horizontal cylinder 605, wherein the limit plate 405 is correspondingly provided with a plurality of groups of inclined guide grooves 406 corresponding to the detection rods 403, and a guide shaft 407 fixed to the sliding plate 404 is slidably embedded in the inclined guide groove 406; specifically, in this embodiment, when adjusting the distance between two groups of adjacent detection ends 402, the limit plate 405 is driven away by the horizontal cylinder 605. The positioning module slides in the direction of the limit plate 405. During the sliding process, based on the limiting effect of the inclined guide groove 406 on the guide shaft 407, the guide shaft 407 can be synchronously driven to diffuse with each other. The guide shaft 407 can synchronously drive the detection rods 403 and the detection end 402 to diffuse with each other through the sliding plate 404. Correspondingly, when the horizontal cylinder 605 drives the limit plate 405 to slide in the direction close to the positioning module, it can drive the detection rods 403 and the detection end 402 to gather together, and the adjustment process is very convenient.

[0055] In this embodiment, please refer to Figure 8When the first adjustment part adjusts the distance between the upper detection mechanism 4 and the lower detection mechanism 401, in order to ensure the stability of the top plate 6 and the bottom plate 601, a support plate 2 is provided on the detection platform 1, and two groups of limit rods 610 are symmetrically fixed on the support plate 2. The sliding sleeve on the limit rod 610 is provided with a support 609 fixedly connected to the bottom plate 601; specifically, when the lifting cylinder 604 adjusts the distance between the top plate 6 and the bottom plate 601, the bottom plate 601 drives the support 609 to slide on the limit rod 610 to improve its stability during movement.

[0056] Furthermore, when the lifting cylinder 604 adjusts the movement of the top plate 6 and the bottom plate 601, in order to keep the distance of the top plate 6 rising and the distance of the bottom plate 601 falling consistent, thereby ensuring that the detection end 402 of the upper detection mechanism 4 and the detection end 402 of the lower detection mechanism 401 are evenly spread on one side of the bumper body 3, it can be seen that Figure 8 Two groups of baffles 608 are symmetrically fixed on one side of the support plate 2, and a driving gear 607 is rotatably arranged on the baffle 608. First racks 606 are arranged on both sides of the driving gear 607 in parallel and staggered manner. One group of first racks 606 is fixed to the top plate 6, and the other group of first racks 606 is fixed to the bottom plate 601; it can be explained that when the lifting cylinder 604 adjusts the distance between the top plate 6 and the bottom plate 601, the top plate 6 and the bottom plate 601 can respectively drive the first rack 606 to move. Since the two groups of first racks 606 are engaged with the driving gear 607, the movement distances of the two groups of first racks 606 always remain equal, thereby ensuring that the rising distance of the top plate 6 is consistent with the falling distance of the bottom plate 601. Correspondingly, the detection terminals 402 on the upper and lower sides achieve a uniform diffusion effect.

[0057] In this embodiment, please refer to Figure 1-Figure 2 as well as Figure 8 The driving module includes a second rack 611 fixed to the bottom of the support plate 2, and also includes a first half gear 5, a second half gear 501 and a third half gear 502 arranged on the detection platform 1 in an equidistant rotation manner. The first half gear 5 is fixed to the output end of the first servo motor 503 fixed to the bottom of the detection platform 1, the second half gear 501 is fixed to the output end of the second servo motor 504 fixed to the bottom of the detection platform 1, and the third half gear 502 is fixed to the output end of the third servo motor 505 fixed to the bottom of the detection platform 1. The detection platform 1 is provided with an elastic module, which is connected to the support plate 2;

[0058] It can be explained that, in the initial state, the first half gear 5, the second half gear 501, and the third half gear 502 are not engaged with the second rack 611. When the first-level strength test of the bumper body 3 is required, the first servo motor 503 is started to drive the first half gear 5 to rotate. During the rotation, the first half gear 5 can be engaged with the second rack 611. As the first half gear 5 continues to rotate, the second rack 611 can drive the support plate 2 to move away from the positioning module, thereby compressing the elastic module and generating elastic force. When the first half gear 5 loses engagement with the second rack 611, the elastic module can drive the support plate 2 to move toward the positioning module, thereby performing an impact test on the bumper body 3 to simulate the condition of a car being hit.

[0059] Accordingly, when the second-level strength test of the bumper body 3 is required, the first half gear 5 is first started to drive the second rack 611 to move a corresponding distance. When the first half gear 5 and the second rack 611 are about to lose engagement, the second servo motor 504 is then started to drive the second half gear 501 to rotate. The second half gear 501 can then engage with the second rack 611 during the rotation process. At this time, the first half gear 5 and the second rack 611 lose engagement. As the second half gear 501 continues to rotate, the second rack 611 can drive the support plate 2 to continue to move a distance away from the positioning module, thereby compressing the elastic module again and generating a greater elastic force, thereby simulating the actual situation where the automobile bumper body 3 is subjected to a greater impact force.

[0060] Therefore, when it is necessary to perform a third-level strength test on the bumper body 3, the support plate 2 can be driven to move a certain distance through the first half gear 5 and the second half gear 501, and finally the third servo motor 505 is started to drive the second rack 611 to move in the direction away from the positioning module to the maximum distance. At this time, the contraction amount of the elastic module reaches the maximum, and the elastic force generated is also the largest, so as to further test the maximum impact force that the automobile bumper body 3 can withstand. This embodiment does not require the use of multiple testing devices to test the actual load-bearing conditions of the automobile bumper body 3 under different impact forces, which not only improves the detection efficiency but also reduces the cost.

[0061] In this embodiment, please refer to Figure 3 and Figure 8The elastic module includes a guide seat 203 fixed on both sides of the base plate 601, and the guide seats 203 on both sides are respectively slidably mounted on the support shaft 202, and L-shaped brackets 103 are fixedly arranged at both ends of the support shaft 202. Each L-shaped bracket 103 is respectively slidably mounted on the positioning shaft 102, and the positioning shaft 102 is fixed on the testing platform 1, wherein a second spring 204 is provided on the support shaft 202, one end of the second spring 204 is fixed to the L-shaped bracket 103, and the other end is fixed to the guide seat 203; it can be explained that when the support plate 2 slides in the direction away from the positioning module, it can synchronously drive the guide seat 203 to slide on the support shaft 202, and the guide seat 203 can synchronously compress the second spring 204 and generate elastic force. Under the action of the elastic force, the second spring 204 can drive the support plate 2 to reset so as to perform an impact test on the bumper body 3.

[0062] In addition, see Figure 1 Two sets of slide rails 101 are fixedly arranged on the testing platform 1, and a slide bar 201 slidably connected to the slide rails 101 is fixedly arranged at the bottom of the support plate 2; specifically, when the support plate 2 moves, it can synchronously drive the slide bar 201 to slide in the slide rail 101 to further improve its stability during movement.

[0063] See also Figure 1 and Figure 3 The positioning module includes a positioning platform 104 fixed to one side of the detection platform 1, and an adjusting cylinder 302 is fixed on the positioning platform 104. The driving end of the adjusting cylinder 302 is fixed to the T-plate 301, and the T-plate 301 is fixed with at least two sets of clamps 303 toward the detection platform 1 for clamping and fixing the reinforcing ribs on the back side of the bumper body 3; it can be explained that when the bumper body 3 is positioned in this embodiment, the reinforcing ribs on the back side of the bumper body 3 are clamped and fixed by the two sets of clamps 303 to achieve the positioning effect. When the servo motor drives the support plate 2 to move in the direction away from the bumper body 3, the T-plate 301 can be driven by the adjusting cylinder 302 to move a certain distance toward the detection platform 1, so that the detection end 402 can effectively impact the bumper body 3. When the detection is completed, the adjusting cylinder 302 drives the T-plate 301 to reset, and the bumper body 3 can be disassembled.

[0064] A testing method for a plastic product strength testing device comprises the following steps:

[0065] See also Figure 1-Figure 4 S1, the bumper body 3 to be tested is positioned and fixed on one side of the testing platform 1 through the positioning module;

[0066] S2. The driving module drives each detection terminal 402 to move away from the bumper body 3. When the detection terminal 402 reaches the corresponding position, the detection terminal 402 is driven to move toward the bumper body 3. The detection terminal 402 impacts the bumper body 3 to simulate the impact of the bumper body 3 during actual driving of the car.

[0067] S3. During the initial test, the distance between the upper detection mechanism 4 and the lower detection mechanism 401 is the smallest, and the distance between the two sets of detection terminals 402 is the smallest. The detection terminals 402 of the upper detection mechanism 4 and the lower detection mechanism 401 are in a state of being gathered together. The gathered detection terminals 402 can simulate the effect of the automobile bumper body 3 being hit by a small object during actual use.

[0068] S4. After the preliminary detection, the first adjustment part drives the upper detection mechanism 4 and the lower detection mechanism 401 to move away from each other by a certain distance, and the second adjustment part drives each detection end 402 to move away from each other, and diffuses the detection end 402. The detection end 402 in the diffused state can simulate the effect when the automobile bumper body 3 is hit by a larger object during actual application.

[0069] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A plastic product strength testing device, comprising a testing platform, characterized in that: The testing platform is provided with a positioning module for positioning the bumper body to be tested; The testing platform is also provided with a strength detection module for performing strength detection on the positioned bumper body. The strength detection module includes an upper detection mechanism and a lower detection mechanism. The upper detection mechanism and the lower detection mechanism each include a plurality of detection terminals arranged in an array in a horizontal direction. The testing platform is also provided with a drive module for driving each detection terminal to move toward or away from the positioning module. The detection platform is further provided with a first adjustment portion and a second adjustment portion, the first adjustment portion is used to adjust the distance between the upper detection mechanism and the lower detection mechanism, and the second adjustment portion is used to adjust the distance between two sets of adjacent detection ends; The detection platform is symmetrically provided with a top plate and a bottom plate in the vertical direction, an upper detection mechanism is arranged on the top plate and close to one side of the bottom plate, and a lower detection mechanism is arranged on the bottom plate and close to one side of the top plate, at least one set of sleeves is arranged on the bottom plate, and a telescopic rod fixed to the top plate is slidably plugged on the sleeve, and the first adjustment part includes a lifting cylinder fixed to the top plate, and the driving end of the lifting cylinder is fixed to the bottom plate; The detection end is fixed to the detection rod on one side away from the positioning module; the end of the detection rod away from the detection end is slidably plugged into the first positioning seat and the second positioning seat respectively, the first positioning seat and the second positioning seat are fixed on the sliding plate at intervals, one side of the sliding plate is slidably connected to the top plate, and the other side of the sliding plate is slidably connected to the bottom plate, and a first positioning plate and a second positioning plate are further arranged on the detection rod between the first positioning seat and the second positioning seat, the first positioning plate is slidably sleeved on the detection rod, the second positioning plate is fixed on the detection rod, and a first spring is also provided on the detection rod; A horizontal cylinder is fixedly arranged on one side of the top plate and the bottom plate respectively, and a limit plate is fixedly arranged on the driving end of the horizontal cylinder; a plurality of groups of inclined guide grooves corresponding to the detection rods are correspondingly opened on the limit plate, and a guide shaft fixed to the sliding plate is slidably embedded in the inclined guide groove.

2. A plastic product strength detection device according to claim 1, characterized in that: The testing platform is provided with a support plate, on which two groups of limiting rods are symmetrically fixedly arranged, and the limiting rods are slidingly sleeved with supports fixedly connected to the bottom plate.

3. A plastic product strength detection device according to claim 2, characterized in that: Two groups of baffles are symmetrically fixed on one side of the support plate, and driving gears are rotatably arranged on the baffles. First racks are arranged on both sides of the driving gears in parallel and staggered manner. One group of first racks is fixed to the top plate, and the other group of first racks is fixed to the bottom plate.

4. A plastic product strength detection device according to claim 1, characterized in that: The driving module includes a second rack fixed to the bottom of the support plate, and also includes a first half gear, a second half gear and a third half gear arranged on the detection platform in an equidistant rotation manner, the first half gear is fixed to the output end of the first servo motor fixed to the bottom of the detection platform, the second half gear is fixed to the output end of the second servo motor fixed to the bottom of the detection platform, and the third half gear is fixed to the output end of the third servo motor fixed to the bottom of the detection platform; Wherein, an elastic module is provided on the detection platform, and the elastic module is connected to the support plate.

5. A plastic product strength detection device according to claim 4, characterized in that: The elastic module includes guide seats fixed on both sides of the base plate, the guide seats on both sides are respectively slidably mounted on the support shaft, and L-shaped brackets are fixedly arranged at both ends of the support shaft, and each L-shaped bracket is respectively slidably mounted on the positioning shaft, and the positioning shaft is fixed on the detection table; Wherein, a second spring is provided on the support shaft.

6. A plastic product strength testing device according to claim 1, characterized in that: The positioning module includes a positioning platform fixed on one side of the testing platform, an adjusting cylinder is fixed on the positioning platform, the driving end of the adjusting cylinder is fixed to the T-shaped plate, and at least two sets of clamps are fixed on the T-shaped plate toward the testing platform to clamp and fix the reinforcing ribs on the back side of the bumper body.

7. A testing method for a plastic product strength testing device, characterized in that: A plastic product strength detection device according to any one of claims 1 to 6, comprising the following steps: Position and fix the bumper body to be tested on one side of the test bench through the positioning module; The drive module drives each detection end to move away from the bumper body. When it moves to the corresponding position, it drives the detection end to move toward the bumper body, and the detection end hits the bumper body to simulate the impact of the car on the bumper body during actual driving. During the initial test, the distance between the upper and lower detection mechanisms is minimal, and the distance between the two sets of detection terminals is minimal. The detection terminals of the upper and lower detection mechanisms are in a state of being gathered together. The gathered detection terminals can simulate the effect of a car bumper body being hit by a small object during actual use. After the preliminary detection, the first adjustment part drives the upper detection mechanism and the lower detection mechanism to move away from each other by a certain distance, and the second adjustment part drives each detection end to move away from each other, diffusing the detection ends. The detection ends in the diffused state can simulate the effect when the car bumper body is hit by a large object during actual application.

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