PPA elastomer tension tester for automobile

Abstract

The utility model provides a PPA elastomer tension tester for an automobile, which comprises a bottom plate, the right end of the upper end face of the bottom plate is provided with a control machine for controlling the tension tester, the left end of the bottom plate is provided with a base, the upper end face of the base is fixedly connected with a plurality of guide rods for guiding a movable plate to move vertically, and the guide rods are sleeved with the movable plate. A cylinder box is fixedly installed at the upper end of the guide rod, stretching parts are arranged on the lower end face of the movable plate and correspond to the base, and the corresponding stretching parts are matched to be used for stretching the elastic body. The elastic body is stretched through the stretching part, the upper clamping plate and the lower clamping plate of the stretching part are hinged to each other, the two clamping plates are fastened through the metal clamp hinged between the two clamping plates, the elastic body is clamped by the sharp mouth part formed in front of the clamping plates, and meanwhile the elastic body can be hooked due to the fact that the barb ruler is arranged at the front end of the sharp mouth part. The anti-skid pad is arranged at the rear end of the sharp mouth part, and the elastic body can be further prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile elastomer tension testers, in particular to a PPA elastomer tension tester for automobiles. Background Art

[0002] PPA elastomer is a thermoplastic material with special high performance. Thermoplastic elastomer combines the high elasticity and aging resistance of rubber with the processing convenience of plastic. The elastomer tensile test measures the tensile properties of the elastomer when subjected to external force, providing data on key parameters such as material ductility, strength, and elastic limit. These data are crucial for predicting the performance and durability of the material and help determine whether the material is suitable for a specific application environment. However, the current tensile test of elastomer materials on the market mainly involves manually stretching the elastomer material. After release, the rebound of the material is observed with the naked eye to judge the performance of the elastomer material. The test accuracy is low, and it is difficult to effectively guarantee the performance test.

[0003] In order to solve the above-mentioned problem of "low accuracy", it was found through search: Application number CN202122181242.3 discloses an elastomeric material rebound resilience testing device, including a rebound resilience testing tool, the rebound resilience testing tool is installed on a tensile testing machine, the rebound resilience testing tool includes a base plate, the base plate is arranged on the working platform of the tensile testing machine, and a fixed clamping mechanism and a movable clamping mechanism for clamping the elastomeric material are installed on the base plate, and the fixed clamping mechanism and the movable clamping mechanism are arranged correspondingly. A guide pulley is also installed on the base plate, and the guide pulley and the movable clamping mechanism are arranged correspondingly. A traction rope is installed on the movable clamping mechanism, and the free end of the traction rope passes around the guide pulley and is connected to the traction assembly of the tensile testing machine.

[0004] However, when the above-mentioned elastomer testing device is in use, the manual adjustment rod above the clamping mechanism has no fixed structure. If the pressure is too large after clamping, the manual adjustment rod may rotate in the opposite direction and loosen the elastic part. Moreover, if multiple tests are to be performed, the movable clamping structure needs to be manually dialed back after each test, which is inefficient. Utility Model Content

[0005] The purpose of the present utility model is to provide a PPA elastomer tensile tester for automobiles to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A PPA elastomer tensile tester for automobiles, comprising:

[0008] The bottom plate has a control machine for controlling the tensile tester at the right end of the upper end surface of the bottom plate, and a base at the left end. The upper end surface of the base is fixedly connected to a plurality of guide rods for guiding the vertical movement of the movable plate. The movable plate is connected to the outer surface of the guide rod. The upper end of the guide rod is fixedly installed with a cylinder box. The lower end surface of the movable plate and the corresponding position of the base have stretching components, and the corresponding stretching components are used to stretch the elastomer together.

[0009] Preferably, the stretching component includes an upper splint and a lower splint, and the upper splint and the lower splint are hinged by a metal clip. The metal clip first penetrates the upper splint and then penetrates the lower splint. The upper and lower ends of the metal clip respectively have two clamping rods that extend into the upper and lower splints respectively.

[0010] Preferably, the end of the lower splint is provided with an avoidance groove to accommodate the rotation of the splint handle, the end of the lower splint is fixedly installed in the splint base, and the splint base is fixedly connected to the lower section of the movable plate and the upper end surface of the base.

[0011] Preferably, the front ends of the upper and lower clamping plates are bent to form a pointed mouth portion, which is used to clamp the elastic member. The upper end of the pointed mouth portion has a barb ruler for hooking the elastic member to prevent it from falling off, and the lower end of the pointed mouth portion has an anti-slip pad.

[0012] Preferably, the space between the upper and lower clamping plates where the front halves are bent forms a groove.

[0013] Preferably, the base is provided with a tensile tester for testing tensile force, the internal sliding connection of the tensile tester is a sliding rod, and the sliding rod is fixedly connected to the splint base below the movable plate and moves with the tensile component.

[0014] Preferably, the lower end of the guide rod is fixedly connected to a limit switch, a cylinder is installed at the inner center of the cylinder box, the lower end of the cylinder is connected to a telescopic rod, and the lower end of the telescopic rod is connected to the movable plate.

[0015] Preferably, the lower end of the movable plate is provided with a fan with an adjustable blowing angle, the fan is rotatably connected to the semicircular mounting frame through a mounting hole, and the semicircular mounting frame is fixedly connected to the movable plate through a fan base.

[0016] Preferably, the bottom plate is provided with a transparent shell, the transparent shell wraps the tensile testing device, the upper end of the transparent shell is fixedly connected to the cylinder box, and the outer surface of the transparent shell is provided with a shell handle for pulling open the shell.

[0017] Preferably, the bottom of the base plate has a plurality of threaded rods, and the threaded rods are threadedly connected in the threaded sleeves.

[0018] Preferably, one side of the stretching component on the base is provided with a tension sensor, which can obtain the tension data of the stretching elastic body of the stretching component and send it to the control machine.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The utility model stretches the elastic body by arranging a stretching component, the upper clamp and the lower clamp of the stretching component are hinged to each other, and the two clamps are fastened by a metal clamp hinged between the two clamps, so that the pointed mouth formed in the front of the clamp clamps the elastic body. At the same time, since the front end of the pointed mouth has a barbed ruler, the elastic body can be hooked, and the anti-slip pad at the rear end of the pointed mouth can further prevent the elastic body from falling off.

[0021] The utility model tests the elastic body by arranging a cylinder in a vertical direction of the stretching component to stretch the movable plate and drive the stretching component to stretch the elastic body. The cylinder can be controlled by a control machine to perform repeated experiments to test the performance of the elastic body.

[0022] In the present invention, since the same elastomer needs to be tested multiple times, and the material has a "fatigue" phenomenon, and repeated mechanical stretching will increase the internal energy of the elastomer, causing heat, which may cause the elastomer to break. By installing a transparent shell on the bottom plate, the test can be carried out safely without affecting the observation. At the same time, a fan is installed under the movable plate to continuously blow air to the elastomer to reduce the heat, thereby reducing the possibility of the elastomer breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a front sectional view of the overall structure of the utility model;

[0025] Figure 3 This is a front view of the overall structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the stretching component of the utility model;

[0027] Figure 5 This is a schematic diagram of the stretching component of the utility model;

[0028] Figure 6 This is a schematic diagram of the tip of the stretching component of the utility model;

[0029] Figure 7 This is a schematic diagram of the fan structure of the utility model.

[0030] In the figure: 1-base plate, 101-base, 2-tensile component, 201-upper splint, 202-lower splint, 203-metal clip, 204-splint base, 205-clamping rod, 206-splint handle, 207-avoidance groove, 208-barb ruler, 209-groove, 210-anti-slip pad, 3-transparent shell, 301-shell handle, 4-movable plate, 5-guide rod, 6-limit switch, 7-control machine, 8-cylinder box, 9-cylinder, 901-telescopic rod, 10-tensile tester, 1001-sliding rod, 11-threaded rod, 1101-threaded sleeve, 12-fan, 1201-fan base, 1202-semicircular mounting frame, 1203-mounting hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example:

[0033] See also Figures 1 to 7 , the utility model provides a technical solution:

[0034] A PPA elastomer tensile tester for automobiles, comprising:

[0035] The bottom plate 1 has a control machine 7 for controlling the tensile tester at the right end of the upper end surface of the bottom plate 1, and a base 101 at the left end. The upper end surface of the base 101 is fixedly connected to a plurality of guide rods 5 for guiding the vertical movement of the movable plate 4. The movable plate 4 is connected to the outer surface of the guide rods 5. The upper end of the guide rods 5 is fixedly installed with a cylinder box 8. The lower end surface of the movable plate 4 and the corresponding part of the base 101 have a stretching component 2, and the corresponding stretching components 2 are used to stretch the elastomer.

[0036] In this embodiment, the elastomer needs to be installed on the stretching component 2 first. First, the transparent shell 3 of the device needs to be opened. Then the staff needs to press the clamp handle 206 of the stretching component 2. The clamp handle 206 rotates into the avoidance groove 207. The clamp rod 205 in the upper clamp 201 rotates with the upper clamp 201. The clamp rod 205 rotates to open the stretching component. At this time, the elastomer is placed on the pointed mouth formed by the upper clamp 201 and the lower clamp 202, and the clamp handle 206 is released. Since there are clamp rods 205 of metal clips 203 in both clamps, the restoration of the metal clamp 203 will cause the two clamps to restore and tightly clamp the elastomer.

[0037] Specifically, the stretching component 2 includes an upper splint 201 and a lower splint 202, and the upper splint 201 and the lower splint 202 are hinged by a metal clip 203. The metal clip 203 first penetrates the upper splint 201 and then penetrates the lower splint 202. The upper and lower ends of the metal clip 203 respectively have two clamping rods 205 that extend into the upper splint 201 and the lower splint 202 respectively.

[0038] Specifically, the end of the lower splint 201 is provided with an avoidance groove 207 to accommodate the rotation of the splint handle 206. The end of the lower splint 201 is fixedly installed in the splint base 204, and the splint base 204 is fixedly connected to the lower section of the movable plate 4 and the upper end surface of the base 101.

[0039] After the upper clamping plate 201 and the lower clamping plate 202 clamp the elastic member, the pointed portions formed at the front ends of the two clamping plates are provided with barbed rulers, which can hook the elastic member to prevent the elastic member from falling off.

[0040] At the same time, an anti-skid pad 210 is installed at the lower end of the pointed mouth, and the anti-skid pad 210 cooperates with the barb ruler 208 to prevent the elastomer from falling off.

[0041] Specifically, the front ends of the upper clamping plate 201 and the lower clamping plate 202 are bent to form a pointed mouth portion, which is used to clamp the elastic member. The upper end of the pointed mouth portion has a barb ruler 208 that hooks the elastomer to prevent it from falling off, and the lower end of the pointed mouth portion has an anti-slip pad 210.

[0042] Specifically, the space between the upper clamping plate 201 and the front half of the lower clamping plate 202 is curved to form a groove 209 .

[0043] When the device is not started, the movable plate 4 contacts the limit switch, and the tension value of the tension tester 10 is 0.

[0044] After the elastic part is installed, the cylinder 9 is started by the control machine 7. The cylinder 9 controls the telescopic rod 901 to drive the movable plate 4 to move upward along the guide rod 5, so that the tensile component 2 at the lower end of the movable plate 4 moves accordingly, and the tensile component 2 drives the sliding rod 1001 to slide in the tensile tester 10. When the tension of the tensile tester 10 reaches the set threshold, the control machine 7 will control the cylinder 9 to stop the telescopic rod 901 and keep it for a period of time to test the bearing capacity of the elastic part. Afterwards, the control cylinder 9 drives the movable plate 4 to move downward, and the value of the tensile tester 10 will gradually decrease during the descent. When the movable plate 4 hits the limit switch 6, the control machine 7 stops the cylinder 9. At this time, the value of the tensile tester 10 becomes 0, indicating that the elastomer is no longer stretched by the tensile component 2. Subsequently, the staff can reset a higher tensile test threshold to retest the tensile limit of the elastic part.

[0045] Specifically, the lower end of the guide rod 5 is fixedly connected to the limit switch 6. When the movable plate 4 hits the limit switch 6, the control machine 7 will stop the operation of the cylinder 9. The cylinder 9 is installed in the inner center of the cylinder box 8. The lower end of the cylinder 9 is connected to the telescopic rod 901, and the lower end of the telescopic rod 901 is connected to the movable plate 4.

[0046] Specifically, the base 1 has a tensile tester 10 for testing tension, and the tensile tester 1 has a traction assembly that can move up and down relative to the tensile tester 10 (disclosed in the prior art CN202122181242.3), and the sliding rod 1001 is connected to the traction assembly. The sliding rod 1001 is fixedly connected to the splint base 204 under the movable plate 4 and moves with the tensile component 2.

[0047] Due to repeated stretching, the elastomer may become "fatigued" and may break. The high-strength elastomer breaks with great force, which may cause physical harm to the staff if it hits them. By adding a transparent shell 3 to the bottom plate 1, the possible harm to the staff caused by the breakage of the elastomer can be prevented while allowing the staff to observe the internal state of the elastomer.

[0048] At the same time, multiple stretching of the elastomer will cause the mechanical energy to be converted into thermal energy due to the orientation and arrangement of the elastomer molecules, and since the tensile stress acts on the middle section, the elastomer will be locally heated and there is a risk of easy breakage. In order to reduce the risk, the fan 12 under the movable plate 4 is started by the control machine 7. Since the fan 12 is installed on the semicircular mounting frame 1202 through the mounting hole 1203, the fan 12 can adjust the blowing angle as needed.

[0049] After one stretching is completed, the movable plate moves downward again until it contacts the limit switch 6 on the guide rod 5 and then stretches again for testing.

[0050] Specifically, the lower end of the movable plate 4 has a fan 12 with an adjustable blowing angle. The fan 12 is rotatably connected to the semicircular mounting frame 1202 through the mounting hole 1203. The semicircular mounting frame 1202 is fixedly connected to the movable plate 4 through the fan base 1201.

[0051] Specifically, the bottom plate 1 has a transparent shell 3, which wraps the tensile testing device. The upper end of the transparent shell is fixedly connected to the cylinder box 7, and the outer surface of the transparent shell 3 has a shell handle 301 for pulling open the shell.

[0052] Specifically, the bottom of the base plate 1 has a plurality of threaded rods 11 , and the threaded rods 11 are threadedly connected in the threaded sleeve 1101 .

[0053] The remaining undescribed parts of the present invention are the same as the prior art, or are well-known technologies or can be implemented by using the prior art, and will not be described in detail here.

[0054] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PPA elastomer tensile tester for automobiles, characterized in that: include: A bottom plate (1), wherein the right end of the upper end surface of the bottom plate (1) is provided with a control machine (7) for controlling a tensile tester, and the left end is provided with a base (101), the upper end surface of the base (101) is fixedly connected to a plurality of guide rods (5) for guiding the vertical movement of a movable plate (4), the outer surface of the guide rods (5) is connected to the movable plate (4), the upper end of the guide rods (5) is fixedly installed with a cylinder box (8), the lower end surface of the movable plate (4) and the corresponding portion of the base (101) are provided with a stretching component (2), and the corresponding stretching components (2) are used to stretch the elastic body; The stretching component (2) comprises an upper splint (201) and a lower splint (202), wherein the upper splint (201) and the lower splint (202) are hingedly connected via a metal clamp (203), wherein the metal clamp (203) first penetrates the upper splint (201) and then penetrates the lower splint (202), and the upper end and the lower end of the metal clamp (203) respectively have two clamping rods (205) extending into the upper splint (201) and the lower splint (202) respectively.

2. The automotive PPA elastomer tensile tester according to claim 1, characterized in that: The end of the lower splint (202) is provided with an avoidance groove (207) for accommodating the rotation of the splint handle (206), and the end of the lower splint (202) is fixedly installed in the splint base (204), and the splint base (204) is fixedly connected to the lower section of the movable plate (4) and the upper end surface of the base (101).

3. The automotive PPA elastomer tensile tester according to claim 1, characterized in that: The front ends of the upper clamping plate (201) and the lower clamping plate (202) are bent to form a pointed mouth portion, which is used to clamp the elastic member. The upper end of the pointed mouth portion has a barb (208) for hooking the elastic member to prevent it from falling off, and the lower end of the pointed mouth portion has an anti-slip pad (210).

4. The automotive PPA elastomer tensile tester according to claim 1, characterized in that: The space between the upper clamping plate (201) and the front half of the lower clamping plate (202) is curved to form a groove (209).

5. The automotive PPA elastomer tensile tester according to claim 1, characterized in that: The base (101) is provided with a tensile tester (10) for testing tensile force. The tensile tester (10) is internally slidably connected to a sliding rod (1001). The sliding rod (1001) is fixedly connected to a splint base (204) below the movable plate (4) and moves along with the tensile component (2).

6. The automotive PPA elastomer tensile tester according to claim 1, characterized in that: The lower end of the guide rod (5) is fixedly connected to the limit switch (6), a cylinder (9) is installed in the center of the cylinder box (8), the lower end of the cylinder (9) is connected to a telescopic rod (901), and the lower end of the telescopic rod (901) is connected to the movable plate (4).

7. The automotive PPA elastomer tensile tester according to claim 1, characterized in that: The lower end of the movable plate (4) is provided with a fan (12) capable of adjusting the blowing angle. The fan (12) is rotatably connected to a semicircular mounting frame (1202) through a mounting hole (1203). The semicircular mounting frame (1202) is fixedly connected to the movable plate (4) through a fan base (1201).

8. The automotive PPA elastomer tensile tester according to claim 1, characterized in that: The bottom plate (1) is provided with a transparent shell (3), the transparent shell (3) enclosing the tensile testing device, the upper end of the transparent shell being fixedly connected to the cylinder box (8), and the outer surface of the transparent shell (3) having a shell handle (301) for pulling the shell open.

9. The automotive PPA elastomer tensile tester according to claim 1, characterized in that: The bottom of the base plate (1) has a plurality of threaded rods (11), and the threaded rods (11) are threadedly connected in the threaded sleeve (1101).

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