Impact performance testing equipment

Abstract

The utility model discloses an impact performance test equipment, including floor stand, punch hammer and punch, the floor stand extends along the height direction, the floor stand is equipped with vertical guide rail, the vertical guide rail defines the guide path of guiding the punch hammer to fall down, the floor stand is equipped with the punch hammer height adjusting bracket, the punch hammer height adjusting bracket is equipped with the punch hammer, and the punch hammer height adjusting bracket is equipped with the punch. The punch hammer height adjusting frame is provided with a punch hammer releasing assembly, the punch is arranged below the punch hammer, a workpiece positioning assembly is arranged at the bottom of the punch, and the workpiece positioning assembly comprises a first workpiece positioning assembly and a second workpiece positioning assembly which can be switched for use. The first workpiece positioning assembly can be used for positioning a sample in a Dupont impact test, and the second workpiece positioning assembly can be used for positioning the sample in a multi-axis impact test, so that the requirements of two different impact tests can be met through simple replacement, the use is more convenient, and the manufacturing and management cost is reduced.

Description

Technical Field

[0001] The utility model is used in the field of testing equipment, in particular to an impact performance testing device. Background Art

[0002] To ensure the safety of the entire vehicle, the room-temperature and low-temperature toughness of plastic materials used in the production of interior and exterior trims must be carefully examined during the development process to avoid the generation of fragments of polymer interior and exterior trim parts during a collision, which could endanger the safety of drivers and passengers.

[0003] There are many ways to examine the toughness of automotive materials, and there are also a large number of related test standards involved. Among them, the surface impact performance (drop ball impact) test includes DuPont performance test and multi-axis impact test. The two test methods are similar, but there is only a single impact performance test device in the existing technology, which makes the test operation inconvenient. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art and provide an impact performance testing device.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] An impact performance testing device includes a stand, a hammer and a punch, the stand extends in a height direction, the stand is provided with a vertical guide rail, the vertical guide rail defines a guide path for guiding the hammer to fall, the stand is provided with a hammer height adjustment frame, the hammer height adjustment frame is provided with a hammer release assembly, the punch is arranged below the hammer, a workpiece positioning assembly is provided at the bottom of the punch, and the workpiece positioning assembly includes a first workpiece positioning assembly and a second workpiece positioning assembly that can be switched for use.

[0007] In combination with the above-mentioned implementation methods, in some implementation methods, it also includes a flip support, the flip support includes a third support and a punch guide seat, the third support is arranged on the side of the workpiece positioning assembly, the punch guide seat is flipably installed on the third support through a swing arm, the punch guide seat is provided with a punch guide sleeve, and the punch is arranged in the punch guide sleeve.

[0008] In combination with the above-mentioned implementation methods, in some implementation methods, it also includes a rocker handle and a connecting rod, the rocker handle is hinged to the third support, one end of the connecting rod is hinged to the rocker handle, and the other end of the connecting rod is hinged to the swing arm, the rocker handle can drive the swing arm and the punch guide seat to flip between the working position and the non-working position through the connecting rod, the punch guide seat located in the working position flips to the top of the workpiece positioning assembly, and the punch guide seat located in the non-working position flips to the side of the workpiece positioning assembly, and the connecting rod is provided with a limiting boss that resists the swing arm when the punch guide seat flips to the working position.

[0009] In combination with the above implementations, in some implementations, the first workpiece positioning assembly includes a first support, the top of the first support forms a first supporting surface for placing the sample, the first supporting surface is provided with a sunken first cavity at a position corresponding to the impact position of the punch, and when the punch guide seat is flipped to the working position, a gap is left between the sample and the first supporting surface.

[0010] In combination with the above-mentioned implementations, in certain implementations, the second workpiece positioning assembly includes a second support and a sample pressing plate, the top of the second support forms a second supporting surface for placing the sample, the second supporting surface is provided with a sunken second cavity at a position corresponding to the impact position of the punch, the sample pressing plate is used to press the sample against the second supporting surface, the sample pressing plate is provided with a through hole for the punch to pass through, and the sample pressing plate is connected to the punch guide seat.

[0011] In combination with the above implementations, in some implementations, the frame includes a first column and a second column, a vertical gap is left between the first column and the second column, the vertical guide rail includes a first vertical guide rail arranged on the first column and a second vertical guide rail arranged on the second column, the vertical guide rail defines a guide path between the first column and the second column for guiding the hammer to fall, and the top of the guide path forms a hammer insertion port.

[0012] In combination with the above-mentioned implementations, in certain implementations, the hammer release assembly includes a first release baffle and a second release baffle, the first release baffle extends into the vertical gap from a first side of the vertical gap, the second release baffle extends into the vertical gap from a second side of the vertical gap, and the first release baffle and the second release baffle are installed on the hammer height adjustment frame through their respective rotation fulcrums.

[0013] In combination with the above implementations, in some implementations, the hammer includes a weight.

[0014] In combination with the above implementations, in some implementations, the stand is provided with an adjustment frame guide shaft extending along the height direction, the hammer height adjustment frame is liftably assembled on the adjustment frame guide shaft, and the adjustment frame guide shaft is provided with a locking assembly for locking the hammer height adjustment frame.

[0015] In combination with the above implementations, in certain implementations, a base is provided at the bottom of the impact performance testing device, and the base is provided with casters.

[0016] One of the above technical solutions has at least one of the following advantages or beneficial effects: The technical solution of the utility model can be used to test the impact performance of the product. Specifically, during the test, the sample is placed on the workpiece positioning assembly, the hammer height adjustment frame is adjusted to the set height, the hammer is placed on the workpiece positioning assembly of the hammer height adjustment frame, and then the hammer is released by the hammer release assembly. Under the action of gravity, the hammer falls along the vertical guide rail and hits the punch, thereby completing the impact on the test sample. In the technical solution of the utility model, the workpiece positioning assembly includes a first workpiece positioning assembly and a second workpiece positioning assembly that can be switched for use, wherein the first workpiece positioning assembly can be used for positioning the sample during the DuPont impact test, and the second workpiece positioning assembly can be used for positioning the sample during the multi-axis impact test, that is, through simple replacement, the requirements of two different impact tests can be met, which is more convenient to use and reduces manufacturing and management costs.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0020] Figure 2 yes Figure 1 A schematic diagram of the structure of a punch guide seat in a flipped non-working position according to an embodiment shown;

[0021] Figure 3 yes Figure 1 A schematic diagram of the structure of an embodiment in which a punch guide seat is flipped to a working position;

[0022] Figure 4 yes Figure 1 A schematic diagram of the first support structure of an embodiment is shown;

[0023] Figure 5 yes Figure 1A schematic diagram of the second support structure of an embodiment is shown;

[0024] Figure 6 yes Figure 1 A schematic diagram of the sample pressing plate structure of an embodiment is shown. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0027] In the present utility model, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of the present utility model, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected or electrically connected or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0029] The embodiment of the utility model provides an impact performance testing device, which can be used for testing the room-temperature and low-temperature toughness of plastic materials produced for interior and exterior decoration.

[0030] See also Figure 1The impact performance testing equipment includes a stand 100, a hammer 200 and a punch 300. The stand 100 extends in a height direction. The stand 100 is provided with a vertical guide rail 101. The vertical guide rail 101 defines a guide path for guiding the hammer 200 to fall, so as to prevent the hammer 200 from flipping over during the falling process. The stand 100 is provided with a hammer height adjustment frame 400. The stand 100 is provided with a scale along the height direction. When in use, the hammer 200 can be placed on the hammer height adjustment frame 400, and the preset height of the hammer 200 can be adjusted by the hammer height adjustment frame 400 to flexibly switch and select the test impact speed. The hammer height adjustment frame 400 is provided with a hammer release assembly 401. The punch 300 is arranged below the hammer 200. A workpiece positioning assembly 500 is provided at the bottom of the punch 300. The workpiece positioning assembly 500 is used for positioning and supporting the sample during the impact test. The workpiece positioning assembly 500 includes a first workpiece positioning assembly and a second workpiece positioning assembly that can be switched for use.

[0031] Combination Figure 1 The technical solution of the utility model can be used to test the impact performance of the product. Specifically, during the test, the sample is placed on the workpiece positioning assembly 500, the hammer height adjustment frame 400 is adjusted to the set height, the hammer 200 is placed on the workpiece positioning assembly 500 of the hammer height adjustment frame 400, and then the hammer 200 is released by the hammer release assembly 401. The hammer 200 falls along the vertical guide rail 101 under the action of gravity and hits the punch 300, thereby completing the impact on the test sample. In the technical solution of the utility model, the workpiece positioning assembly 500 includes a first workpiece positioning assembly and a second workpiece positioning assembly that can be switched for use, wherein the first workpiece positioning assembly can be used for positioning the sample during the DuPont impact test, and the second workpiece positioning assembly can be used for positioning the sample during the multi-axis impact test, that is, through simple replacement, the requirements of two different impact tests can be met, and it is more convenient to use.

[0032] In some embodiments, see Figure 2 , Figure 3 The impact performance testing equipment also includes a flip support 600, which includes a third support 601 and a punch guide seat 602. The third support 601 is arranged on the side of the workpiece positioning assembly 500, and the punch guide seat 602 is flippably installed on the third support 601 through a swing arm 603. The punch guide seat 602 is provided with a punch guide sleeve 604, and the punch guide sleeve 604 forms a through hole, and the punch 300 is arranged in the through hole of the punch guide sleeve 604. In this embodiment, the punch guide seat 602 is used to provide guidance and auxiliary support for the punch 300. With the help of the punch guide sleeve 604, the punch 300 can accurately collide with the hammer 200 during the impact process, and stably transmit the impact force to the sample. In addition, the punch guide seat 602 adopts a flippable structure to facilitate the placement of the sample in the workpiece positioning assembly 500.

[0033] Further, in some embodiments, see Figure 2 , Figure 3 The impact performance testing device further includes a crank 605 and a connecting rod 606. The crank 605 is hinged to the third support 601. One end of the connecting rod 606 is hinged to the crank 605. The other end of the connecting rod 606 is hinged to the swing arm 603. The crank 605 can drive the swing arm 603 and the punch guide seat 602 to flip between the working position and the non-working position through the connecting rod 606. The punch guide seat 602 located in the working position flips to the top of the workpiece positioning assembly 500, and the punch guide seat 602 located in the non-working position flips to the side of the workpiece positioning assembly 500. The connecting rod 606 is provided with a limiting boss 607 that abuts against the swing arm 603 when the punch guide seat 602 flips to the working position. In this embodiment, the connecting rod assembly formed by the swing arm 603, the crank 605 and the connecting rod 606 can realize the flipping of the punch guide seat 602 between the working position and the non-working position by manipulating the crank 605. Moreover, the limiting boss 607 matched with the connecting rod 606 and the swing arm 603 can limit the extreme position of the punch guide seat 602 to ensure its position accuracy in the working position. In addition, the connecting rod assembly formed by the swing arm 603, the rocker 605 and the connecting rod 606 can stably limit the punch guide seat 602 in the working position, providing a basis for further realizing the positioning of the punch 300 and the workpiece.

[0034] Further, in some embodiments, see Figure 4 In combination with the positioning requirements of the DuPont impact test for the sample, the first workpiece positioning assembly includes a first support 501. The top of the first support 501 forms a first supporting surface 502 for placing the sample. The first supporting surface 502 is provided with a sunken first cavity 503 at the impact position corresponding to the punch 300. The first cavity 503 is cylindrical. When the punch guide seat 602 is flipped to the working position, a gap is left between the sample and the first supporting surface 502 to ensure that during the impact process, there is no additional force on the top of the sample except the impact force of the punch 300, thereby ensuring the effect of the DuPont impact test.

[0035] Further, in some embodiments, see Figure 5 , Figure 6In combination with the positioning requirements of the multi-axis impact test for the sample, the second workpiece positioning assembly includes a second support 504 and a sample pressing plate 505. The second support 504 forms a second supporting surface 506 for placing the sample on the top. The second supporting surface 506 is provided with a sunken second cavity 507 at the impact position corresponding to the punch 300. The second cavity 507 is cylindrical. The sample pressing plate 505 is used to press the sample against the second supporting surface 506. The sample pressing plate 505 is provided with a through hole for the punch 300 to pass through. The sample pressing plate 505 is connected to the punch guide seat 602. In this embodiment, the sample pressing plate 505 is connected to the punch guide seat 602, and the sample pressing effect can be achieved by means of a connecting rod assembly formed by a swing arm 603, a rocker 605 and a connecting rod 606. At the same time, the sample pressing plate 505 can also be turned over as a whole with the punch guide seat 602 to facilitate the sample to be taken and placed.

[0036] In some embodiments, see Figure 1 The frame 100 includes a first column 102 and a second column 103, the bottoms of the first column 102 and the second column 103 are connected to the bottom plate 104, the tops of the first column 102 and the second column 103 are connected by a connecting plate 105, a vertical interval is left between the first column 102 and the second column 103, the vertical guide rail 101 includes a first vertical guide rail arranged on the first column 102 and a second vertical guide rail arranged on the second column 103, the vertical guide rail 101 defines a guide path between the first column 102 and the second column 103 for guiding the hammer 200 to fall, and a hammer insertion port 106 is formed at the top of the guide path, and the hammer 200 can be placed between the first column 102 and the second column 103 through the hammer insertion port 106.

[0037] In some embodiments, see Figure 1 , Figure 3 The hammer release assembly 401 includes a first release baffle 402 and a second release baffle 403. The first release baffle 402 extends into the vertical interval from the first side of the vertical interval, and the second release baffle 403 extends into the vertical interval from the second side of the vertical interval. The first release baffle 402 and the second release baffle 403 are installed on the hammer height adjustment frame 400 through their respective rotation fulcrums. In this embodiment, the first release baffle 402 and the second release baffle 403 extend into the vertical interval from both sides, thereby providing support for the heavy hammer from both sides. When releasing, the first release baffle 402 and the second release baffle 403 are rotated around the rotation fulcrum at the same time. The first release baffle 402 and the second release baffle 403 release the hammer 200 from both sides at the same time, so as to better ensure the posture of the hammer 200 during the release process and avoid friction loss caused by unstable posture during the falling process.

[0038] In some embodiments, see Figure 1The hammer 200 includes a weight. The impact energy can be flexibly controlled by applying different numbers and weights of the weights.

[0039] In some embodiments, see Figure 1 The stand 100 is provided with an adjustment frame guide shaft 107 extending in the height direction, the hammer height adjustment frame 400 is assembled on the adjustment frame guide shaft 107 in a liftable manner, and the adjustment frame guide shaft 107 is provided with a locking assembly 108 for locking the hammer height adjustment frame 400. The hammer height adjustment frame 400 can adjust the height along the adjustment frame guide shaft 107 to flexibly control the impact speed.

[0040] In some embodiments, see Figure 1 The bottom of the impact performance testing device is provided with a base 700, and the base 700 is provided with casters 701. It is convenient to move and can be directly placed in a walk-in constant temperature and humidity chamber to perform low temperature impact requirements.

[0041] In the description of this specification, the description with reference to the terms "example", "embodiment" or "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An impact performance testing device, characterized in that: The utility model comprises a vertical frame, a hammer and a punch, wherein the vertical frame extends in a height direction and is provided with a vertical guide rail, wherein the vertical guide rail defines a guide path for guiding the hammer to fall, the vertical frame is provided with a hammer height adjustment frame, wherein the hammer height adjustment frame is provided with a hammer release assembly, the punch is arranged below the hammer, and a workpiece positioning assembly is provided at the bottom of the punch, wherein the workpiece positioning assembly comprises a first workpiece positioning assembly and a second workpiece positioning assembly which can be switched for use.

2. The impact performance testing device according to claim 1, characterized in that: It also includes a flip support, which includes a third support and a punch guide seat. The third support is arranged on the side of the workpiece positioning assembly. The punch guide seat is flippably installed on the third support through a swing arm. The punch guide seat is provided with a punch guide sleeve, and the punch is arranged in the punch guide sleeve.

3. The impact performance testing device according to claim 2, characterized in that: It also includes a rocker handle and a connecting rod, the rocker handle is hinged to the third support, one end of the connecting rod is hinged to the rocker handle, and the other end of the connecting rod is hinged to the swing arm. The rocker handle can drive the swing arm and the punch guide seat to flip between the working position and the non-working position through the connecting rod. The punch guide seat located at the working position flips to the top of the workpiece positioning assembly, and the punch guide seat located at the non-working position flips to the side of the workpiece positioning assembly. The connecting rod is provided with a limiting boss that resists the swing arm when the punch guide seat flips to the working position.

4. The impact performance testing device according to claim 3, characterized in that: The first workpiece positioning assembly includes a first support, the top of the first support forms a first supporting surface for placing the sample, the first supporting surface is provided with a sunken first cavity at the impact position corresponding to the punch, and when the punch guide seat is flipped to the working position, a gap is left between the punch guide seat and the sample on the first supporting surface.

5. The impact performance testing device according to claim 3, characterized in that: The second workpiece positioning assembly includes a second support and a sample pressing plate. The top of the second support forms a second supporting surface for placing the sample. The second supporting surface is provided with a sunken second cavity at the impact position corresponding to the punch. The sample pressing plate is used to press the sample against the second supporting surface. The sample pressing plate is provided with a through hole for the punch to pass through. The sample pressing plate is connected to the punch guide seat.

6. The impact performance testing device according to claim 1, characterized in that: The frame includes a first column and a second column, a vertical gap is left between the first column and the second column, the vertical guide rail includes a first vertical guide rail arranged on the first column and a second vertical guide rail arranged on the second column, the vertical guide rail defines a guide path between the first column and the second column for guiding the hammer to fall, and the top of the guide path forms a hammer insertion port.

7. The impact performance testing device according to claim 6, characterized in that: The hammer release assembly includes a first release baffle and a second release baffle, the first release baffle extends into the vertical gap from a first side of the vertical gap, and the second release baffle extends into the vertical gap from a second side of the vertical gap, and the first release baffle and the second release baffle are installed on the hammer height adjustment frame through their respective rotation fulcrums.

8. The impact performance testing device according to claim 1, characterized in that: The hammer includes a weight.

9. The impact performance testing device according to claim 1, characterized in that: The vertical frame is provided with an adjustment frame guide shaft extending in the height direction, the hammer height adjustment frame is movably assembled on the adjustment frame guide shaft, and the adjustment frame guide shaft is provided with a locking assembly for locking the hammer height adjustment frame.

10. The impact performance testing device according to claim 1, characterized in that: A base is provided at the bottom of the impact performance testing device, and casters are provided at the base.

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