A dart impact testing machine for measuring material properties

Abstract

This utility model discloses a dart impact testing machine for measuring material properties, comprising: a base with a mounting groove on its surface, a negative pressure chassis slidably inserted into the inner wall of the mounting groove, a mounting unit for limiting the position of the negative pressure chassis on the inner wall of the mounting groove, a negative pressure groove on the top of the negative pressure chassis, a pressure plate above the negative pressure chassis, a negative pressure unit, and a first driving unit, wherein the negative pressure unit applies negative pressure to the inside of the negative pressure groove. In this utility model, by creating a lifting groove on the surface of the base, and with a lifting block slidably inserted into the inner wall of the lifting groove, during use, the user rotates a threaded rod, which drives the lifting block, threaded onto the surface of the threaded rod, to slide along the inner wall of the lifting groove, thereby controlling the height of the impact dart and thus controlling the impact force.

Description

Technical Field

[0001] This utility model relates to the technical field of dart impact testing machines, specifically a dart impact testing machine for measuring the physical properties of materials. Background Technology

[0002] Impact testing is a test method for evaluating the toughness and impact resistance of materials or products when subjected to short-term, high-magnitude external forces. Among them, the dart impact tester is a test machine used to evaluate the impact resistance of materials.

[0003] Currently, when testing strips (strip-shaped objects, such as plastic bags or rubber belts) that require impact testing, the dart impact testing machine requires placing the strip on a chassis, then controlling the pressure plate above the chassis to press the strip down, and then impacting the strip with a dart. However, after some of the strips being tested are compacted, wrinkles may appear on the surface, which will affect the test results after the dart impacts the strip surface. Therefore, a new type of dart impact testing machine for measuring material properties is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to solve the problem that wrinkles may appear on the surface of a tape when testing its impact resistance using a dart impact testing machine, which can affect the test results after a dart impacts the tape surface. This invention provides a dart impact testing machine.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A dart impact testing machine for measuring material properties includes: a base, a mounting groove on the surface of the base, a negative pressure chassis slidably inserted into the inner wall of the mounting groove, a mounting unit for limiting the position of the negative pressure chassis on the inner wall of the mounting groove, a negative pressure groove on the top of the negative pressure chassis, a pressure plate above the negative pressure chassis, a negative pressure unit, and a first driving unit. The negative pressure unit applies negative pressure to the inside of the negative pressure groove, and the first driving unit controls the spatial height of the pressure plate.

[0007] An impact dart is disposed above the base, and a limiting unit is also included, which is used to limit the position of the impact dart above the base.

[0008] Furthermore, the mounting unit includes a limiting edge formed on the surface of the negative pressure chassis, and a plurality of mounting bolts are threaded into the surface of the limiting edge, with the surfaces of the plurality of mounting bolts all threaded into the surface of the base.

[0009] Furthermore, the negative pressure unit includes a negative pressure pump fixedly inserted into the inner wall of the negative pressure groove, and the negative pressure pump is electrically connected to a controller fixedly installed on the surface of the limiting edge.

[0010] Furthermore, the first drive unit includes two first hydraulic rods that are fixedly installed on the surface of the negative pressure chassis. The surface of the pressure plate is provided with two lifting protrusions. One end of each of the two first hydraulic rods is fixedly installed on the surface of the two lifting protrusions and is electrically connected to the controller.

[0011] Furthermore, the limiting unit includes a lifting block, one end of which is provided with an abutment protrusion. A pressure sensor is fixedly installed on the surface of the abutment protrusion, and a bonding plate is provided on one end of the abutment protrusion. The pressure sensor is electrically connected to a controller fixedly installed on the surface of the base. Two second hydraulic rods are fixedly installed on the surface of the lifting block, and one end of each of the two second hydraulic rods is fixedly installed on the surface of the bonding plate. The unit also includes a lifting unit, which is used to install the lifting block on the surface of the base and control the spatial height of the lifting block.

[0012] Furthermore, the lifting unit includes a lifting groove formed on the surface of the base, a threaded rod is rotatably inserted into the inner wall of the lifting groove, the lifting block is threadedly sleeved on the surface of the threaded rod, and the surface of the lifting block is slidably inserted into the inner wall of the lifting groove.

[0013] Furthermore, the impact dart includes a mounting rod, the surface of which is threaded with a counterweight.

[0014] Furthermore, a secondary ring is slidably inserted into the inner wall of the pressure plate, and two third hydraulic rods are fixedly installed on the surface of the pressure plate. The other ends of the two third hydraulic rods are fixedly installed on the surface of the pressure plate and are electrically connected to the controller.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, an installation groove is provided on the surface of the base. During use, the user needs to install a negative pressure chassis on the inner wall of the installation groove through the installation unit. During use, the user places the strap to be subjected to the impact test on the surface of the negative pressure chassis. Then, the first drive unit controls the pressure plate set above the negative pressure chassis to press down, so that the pressure plate presses down on the surface of the strap to be subjected to the impact test, thus achieving the initial fixation of the strap. Finally, the negative pressure unit will generate negative pressure on the inner wall of the negative pressure groove, so that the part of the strap set above the negative pressure groove will be subjected to downward suction force, thus tightening the center position of the strap and preventing wrinkles on its surface from affecting the experimental structure (the user releases the limit on the impact dart through the limiting unit, and the freely falling impact dart will land on the surface of the strap to be subjected to the impact test, achieving the purpose of experimental testing).

[0017] 2. In this utility model, a lifting groove is opened on the surface of the base, and the lifting block is slidably inserted into the inner wall of the lifting groove. When in use, the user can rotate the threaded rod to drive the lifting block, which is threadedly sleeved on the surface of the threaded rod, to slide on the inner wall of the lifting groove, thereby further realizing the control of the height of the impact dart space and thus the control of the impact force. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a partial schematic diagram of a half-sectional view of the present invention;

[0020] Figure 3 This is another schematic diagram of a half-sectional view of the present invention;

[0021] Figure 4 This is a partial sectional view of the present invention.

[0022] In the diagram: 1. Base; 2. Mounting slot; 3. Negative pressure chassis; 4. Mounting unit; 41. Limiting edge; 42. Mounting bolt; 5. Negative pressure groove; 6. Pressure plate; 7. Negative pressure unit; 71. Negative pressure pump; 72. Controller; 8. First drive unit; 81. First hydraulic rod; 82. Lifting protrusion; 9. Impact dart; 91. Mounting rod; 92. Counterweight head; 10. Limiting unit; 101. Lifting block; 102. Abutment protrusion; 103. Pressure sensor; 104. Adhesive plate; 105. Second hydraulic rod; 106. Lifting unit; 1061. Lifting groove; 1062. Threaded rod; 11. Secondary ring; 12. Third hydraulic rod. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0024] This embodiment provides a dart impact testing machine for measuring material properties. It primarily addresses the problem that surface wrinkles may appear on the surface of a strip when testing its impact resistance, affecting the test results after a dart impact. The following technical solution is provided, which will be discussed in conjunction with... Figures 1-4 Please provide a detailed explanation:

[0025] A dart impact testing machine for measuring material properties includes: a base 1 with a mounting groove 2 on its surface; in use, the user slides a negative pressure plate 3 into the inner wall of the mounting groove 2, and the negative pressure plate 3 is limited by a mounting unit 4 to achieve installation of the negative pressure plate 3 on the inner wall of the mounting groove 2; a negative pressure groove 5 is formed on the top of the negative pressure plate 3, and a pressure plate 6 is set above the negative pressure plate 3; after the user places the strip to be tested on the surface of the negative pressure plate 3, the user controls the spatial height of the pressure plate 6 through a first drive unit 8 so that the bottom of the pressure plate 6 is in contact with the surface of the strip; then, the negative pressure unit 7 applies negative pressure to the inner wall of the negative pressure groove 5 to achieve downward suction on the surface of the strip above, thus lifting the middle of the strip to be tested. The part is flattened, and finally the limiting unit 10 releases the limiting of the impact dart 9 set above the base 1. The freely falling impact dart 9 will impact the surface of the belt to complete the impact test. The main components of the mounting unit 4 are: several mounting bolts 42. In use, the user slides the limiting edge 41 set on the surface of the negative pressure chassis 3 into the surface of the base 1, and then inserts the several mounting bolts 42 into the surface of the limiting edge 41 and the surface of the base 1, so as to realize the installation of the negative pressure chassis 3 on the inner wall of the mounting groove 2. The main components of the negative pressure unit 7 are: a negative pressure pump 71 fixedly inserted into the inner wall of the negative pressure groove 5. In use, the user presses the negative pressure pump 71 fixedly installed on the surface of the limiting edge 41 into the negative pressure unit 72. The pressure pump 71 draws out the gas inside the negative pressure tank 5, thus creating negative pressure inside the negative pressure tank 5. The main components of the first drive unit 8 are two lifting protrusions 82, both mounted on the surface of the pressure plate 6. In use, the user controls the extension and retraction of two first hydraulic rods 81, both fixedly mounted on the surface of the negative pressure chassis 3, via the controller 72. This drives the two lifting protrusions 82, which are respectively fixedly mounted on one end of the two first hydraulic rods 81, to move, further driving the pressure plate 6. The main components of the impact dart 9 are a mounting rod 91, with a counterweight head 92 threaded onto its surface. It should be noted that the counterweight head 92 comes in various weights, and the user can change the weight of the impact dart 9 by replacing the counterweight head 92. The adjustment of the quantity, in which the limiting unit 10 mainly consists of: a lifting block 101 and an abutment protrusion 102 set at one end of the lifting block 101. In use, after the user abuts one end of the mounting rod 91 against the surface of the pressure sensor 103 set on the surface of the abutment protrusion 102, the controller 72 receives the information received by the pressure sensor 103 and controls the extension and retraction of two second hydraulic rods 105, which are fixedly installed on the surface of the lifting block 101. This further drives the mating plate 104 fixedly installed at one end of the two second hydraulic rods 105 to move, thereby cooperating with the lifting block 101 to achieve clamping and limiting of the mounting rod 91. Before this, the user can also control the spatial height of the lifting block 101 through the lifting unit 106.This allows for adjustment of the height of mounting rod 91.

[0026] By providing an installation groove 2 on the surface of the base 1, the user needs to install a negative pressure chassis 3 on the inner wall of the installation groove 2 using the installation unit 4. During use, the user places the strap to be subjected to the impact test on the surface of the negative pressure chassis 3, and then controls the pressure plate 6 set above the negative pressure chassis 3 to press down through the first drive unit 8, so that the pressure plate 6 presses down on the surface of the strap to be subjected to the impact test, thus achieving the initial fixation of the strap. Finally, the negative pressure unit 7 will generate negative pressure on the inner wall of the negative pressure groove 5, so that the part of the strap set above the negative pressure groove 5 will be subjected to a downward suction force, thus tightening the center position of the strap and preventing wrinkles on its surface from affecting the experimental structure (the user releases the limit on the impact dart 9 through the limit unit 10, and the freely falling impact dart 9 will land on the surface of the strap to be subjected to the impact test, achieving the purpose of experimental testing).

[0027] By creating a lifting groove 1061 on the surface of the base 1, and slidably inserting the lifting block 101 into the inner wall of the lifting groove 1061, the user can rotate the threaded rod 1062 during use, which will cause the lifting block 101, which is threaded onto the surface of the threaded rod 1062, to slide on the inner wall of the lifting groove 1061, thereby further controlling the height of the impact dart 9 and thus controlling the impact force.

[0028] like Figure 1-3 As shown, in some embodiments, the main components of the lifting unit 106 are: a lifting groove 1061 formed on the surface of the base 1, and a threaded rod 1062 rotatably inserted into the inner wall of the lifting groove 1061. In use, the user can rotate the threaded rod 1062 to drive the lifting block 101 threaded onto the surface of the threaded rod 1062 to slide on the inner wall of the lifting groove 1061, thereby further realizing the control of the spatial height of the mounting rod 91.

[0029] like Figure 2 As shown, in some embodiments, during use, the user can control the extension and retraction of two third hydraulic rods 12 fixedly installed on the surface of the pressure plate 6 through the controller 72, which further drives the sub-rings 11 fixedly installed at one end of the two second hydraulic rods 105 to move, so that the sub-rings 11 presses the surface of the belt that needs to be impact tested, thereby pressing the belt (at this time the belt is relatively flat). Finally, the user can turn off the negative pressure pump 71 through the controller 72 to end the operation.

[0030] The working process of this utility model is as follows: First, the user needs to control the extension and retraction of the two first hydraulic rods 81 through the controller 72 to raise the pressure plate 6, so that the tape to be tested can be placed on the surface of the negative pressure base 3. Then, control the pressure plate 6 to press the tape tightly. The controller 72 controls the negative pressure pump 71 to generate negative pressure inside the negative pressure groove 5, so that the wrinkles in the middle of the tape can be sucked flat. Finally, the controller 72 controls the extension and retraction of the two third hydraulic rods 12 to drive the secondary ring 11 to press down the tape, so that the negative pressure pump 71 can be turned off, ensuring that the middle of the tape to be tested is in a flat state.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dart impact testing machine for measuring material properties, characterized in that, include: The base (1) has an installation groove (2) on its surface. A negative pressure chassis (3) is slidably inserted into the inner wall of the installation groove (2). The base (1) also includes an installation unit (4), which is used to limit the position of the negative pressure chassis (3) on the inner wall of the installation groove (2). A negative pressure groove (5) is opened on the top of the negative pressure chassis (3). A pressure plate (6) is provided above the negative pressure chassis (3). The base (1) also includes a negative pressure unit (7) and a first drive unit (8). The negative pressure unit (7) is used to apply negative pressure to the inside of the negative pressure groove (5). The first drive unit (8) is used to control the spatial height of the pressure plate (6). An impact dart (9) is provided above the base (1), and a limiting unit (10) is also provided. The limiting unit (10) is used to limit the position of the impact dart (9) above the base (1).

2. The dart impact testing machine for measuring material properties according to claim 1, characterized in that: The mounting unit (4) includes a limiting edge (41) formed on the surface of the negative pressure chassis (3), and a plurality of mounting bolts (42) are threaded into the surface of the limiting edge (41), and the surfaces of the plurality of mounting bolts (42) are threaded into the surface of the base (1).

3. A dart impact testing machine for measuring material properties according to claim 2, characterized in that: The negative pressure unit (7) includes a negative pressure pump (71) fixedly inserted into the inner wall of the negative pressure groove (5), and the negative pressure pump (71) is electrically connected to a controller (72) fixedly installed on the surface of the limiting edge (41).

4. A dart impact testing machine for measuring material properties according to claim 3, characterized in that: The first drive unit (8) includes two first hydraulic rods (81) that are fixedly installed on the surface of the negative pressure chassis (3). The surface of the pressure plate (6) is provided with two lifting protrusions (82). One end of each of the two first hydraulic rods (81) is fixedly installed on the surface of the two lifting protrusions (82) and is electrically connected to the controller (72).

5. A dart impact testing machine for measuring material properties according to claim 4, characterized in that: The limiting unit (10) includes a lifting block (101), one end of which is provided with an abutment protrusion (102). A pressure sensor (103) is fixedly installed on the surface of the abutment protrusion (102). A bonding plate (104) is provided on one end of the abutment protrusion (102). The pressure sensor (103) is electrically connected to a controller (72) fixedly installed on the surface of the base (1). Two second hydraulic rods (105) are fixedly installed on the surface of the lifting block (101). One end of each of the two second hydraulic rods (105) is fixedly installed on the surface of the bonding plate (104). The unit also includes a lifting unit (106), which is used to install the lifting block (101) on the surface of the base (1) and control the spatial height of the lifting block (101).

6. A dart impact testing machine for measuring material properties according to claim 5, characterized in that: The lifting unit (106) includes a lifting groove (1061) formed on the surface of the base (1). A threaded rod (1062) is rotatably inserted into the inner wall of the lifting groove (1061). The lifting block (101) is threaded onto the surface of the threaded rod (1062). The surface of the lifting block (101) is slidably inserted into the inner wall of the lifting groove (1061).

7. A dart impact testing machine for measuring material properties according to claim 1, characterized in that: The impact dart (9) includes a mounting rod (91) with a counterweight (92) threaded onto its surface.

8. A dart impact tester for measuring material properties according to claim 3, wherein a secondary ring (11) is slidably inserted into the inner wall of the pressure plate (6), and two third hydraulic rods (12) are fixedly installed on the surface of the pressure plate (6), and the other ends of the two third hydraulic rods (12) are fixedly installed on the surface of the pressure plate (6) and are electrically connected to the controller (72).

Images