Automatic testing device for resin sample indentation hardness

Abstract

The utility model discloses resin sample press into hardness automation test device, wherein including base and two groups of backrest, two groups of backrest fixedly connected at the top of base, and the upper end and the lower end of each group of backrest are connected with threaded rod no.

Description

Technical Field

[0001] This utility model belongs to the field of material mechanical property testing technology, specifically relating to an automated testing device for resin sample indentation hardness. Background Technology

[0002] Hardness is a core indicator for evaluating the mechanical properties of resin materials, and its testing accuracy and efficiency directly affect material research and development, production quality control, and application selection. Currently, the mainstream resin hardness testing in the industry is still based on indentation methods (such as Vickers, Brinell, and Shore hardness tests). However, traditional testing procedures have significant technical bottlenecks and cannot meet the demands of high-precision and automated modern testing.

[0003] Traditional testing apparatuses heavily rely on manual operation in the force application stage: operators must manually select the weight of the weights according to testing standards, such as the hardness grade requirements corresponding to different resin grades, and place the weights on the weighing pan. However, this method is inefficient. For resin samples of different specifications in the same batch (such as differences in thickness or hardness range), it is necessary to frequently change or add or remove weights manually. The force adjustment time for a single test can be as long as 3-5 minutes, which is difficult to adapt to the efficient testing scenario of batch samples. This phenomenon has become a problem that urgently needs to be solved by people in this field. Utility Model Content

[0004] The purpose of this invention is to address the problems mentioned in the background art by using an automated resin sample indentation hardness testing device.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an automated resin sample indentation hardness testing device, comprising a base and two sets of support plates. The two sets of support plates are fixedly connected to the top of the base. The upper and lower ends of each set of support plates are connected to a threaded rod 1 via bearings. A motor 1 is fixedly connected to the top of the support plate. The top of the threaded rod 1 is connected to the output end of the motor 1 via a coupling. A threaded sleeve is threadedly connected to the shaft of the threaded rod 1. An upper platform and a lower platform are fixedly connected to both ends of the threaded sleeve. A turntable is set on the top of the lower platform. Weights of different weights are arranged along the circumference of the turntable. A second motor is fixed to the bottom of the lower platform. The output shaft of the second motor passes through the lower platform and is keyed to the turntable. A cylinder is fixed in the middle of the bottom of the upper platform. The bottom of the cylinder does not contact the lower platform and is in a suspended state. The second motor can drive the rotation of the turntable to rotate the weight of the required weight to the push rod of the cylinder.

[0006] This utility model further illustrates that the base is fixedly connected to a frame at its top. The frame is located on one side of the two sets of back plates. The frame is divided into an upper part and a lower part, with a support part provided at the same end of the upper and lower parts. The frame as a whole is a frame that runs through the front and back. The upper part, lower part, and support part are integrally formed. A threaded rod is provided in the middle of the top of the lower part, and a test platform is fixed to the top of the threaded rod. The test platform can be raised or lowered by rotating the threaded rod.

[0007] The present invention further describes that a support platform is fixed inside the support part, a bevel gear two is connected to the bearing at the top of the support platform, a bevel gear one is connected to the bearing on one side inside the support part, bevel gear one and bevel gear two mesh, a threaded rod three is connected to the threaded part inside bevel gear two, a handwheel is fixedly connected to one end of bevel gear one, a handle is fixedly fixed to one side of the top of the handwheel, and a vision sensor is fixedly fixed to one side inside the support part.

[0008] This utility model further explains that a fixing block is bolted to one side of the upper part, and a crossbar is rotatably connected inside the fixing block. A weight pan is suspended at the other end of the crossbar. When the device is working, the weight is placed on the weight pan. A connecting rod is rotatably connected to one end of the crossbar near the fixing block. The connecting rod is slidably connected to the upper and lower parts and passes through each other. The connecting rod is set perpendicular to the horizontal plane. The connecting rod can move up and down through the lever assembly. A pressing part is fixed at the bottom of the connecting rod.

[0009] This utility model further explains that a pressure head is fixed at the bottom of the pressing part, the bottom of the pressure head is provided with a rounded corner, and a dial indicator is connected to the top of the connecting rod. The dial indicator is connected to an external computer and can automatically time the movement. The downward displacement is calculated by the probe of the dial indicator.

[0010] This utility model further explains that the connecting rod, pressure head, and threaded rod are coaxially arranged, the diameter of the lower pressure part is larger than the diameter of the connecting rod, thereby limiting the displacement stroke of the connecting rod, and the top of the threaded rod abuts against the bottom of the crossbar.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model, by setting an automatic weight-adding device, can realize the automation of weight-adding, freeing up hands and improving efficiency; by setting a turntable with different weights, the weights can be selected at will according to the required weight. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the automatic weight-adding device of this utility model; Figure 3This is a schematic diagram of the internal structure of the automatic weight-adding device of this utility model; Figure 4 This is a schematic diagram of the overall experimental device of this utility model; Figure 5 This is a schematic diagram of the bevel gear meshing of this utility model; Figure 6 This is a schematic diagram of the lever assembly connection of this utility model; In the diagram: 1. Frame; 101. Upper part; 102. Lower part; 103. Fixing block; 104. Support part; 105. Vision sensor; 2. Base; 3. Lever assembly; 301. Crossbar; 302. Connecting rod; 303. Weight plate; 4. Dial indicator; 5. Lower pressure section; 501. Pressure head; 6. Backing plate; 601. Threaded sleeve; 602. Motor 1; 603. Threaded rod 1; 7. Lower platform; 701. Motor II; 8. Turntable; 9. Weights; 10. Upper platform; 1001. Cylinder; 11. Test bench; 1101. Threaded rod II; 12. Handwheel; 1201. Handle; 1202. Bevel gear one; 1203. Bevel gear two; 1204. Threaded rod three; 1205. Support platform. Detailed Implementation

[0013] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] Please see Figure 1-6This utility model provides a technical solution: an automated resin sample indentation hardness testing device, comprising a base 2 and two sets of support plates 6. The two sets of support plates 6 are fixedly connected to the top of the base 2. The upper and lower ends of each set of support plates 6 are connected to a threaded rod 603 via bearings. A motor 602 is fixedly connected to the top of the support plate 6. The top of the threaded rod 603 is connected to the output end of the motor 602 via a coupling. A threaded sleeve 601 is threadedly connected to the shaft of the threaded rod 603. The two ends of the threaded sleeve 601 are fixedly connected to upper... Platform 10 and lower platform 7. A turntable 8 is set on the top of the lower platform 7. Weights 9 of different weights are set along the circumference of the turntable 8. A motor 701 is fixed at the bottom of the lower platform 7. The output shaft of the motor 701 passes through the lower platform 7 and is keyed to the turntable 8. A cylinder 1001 is fixed in the middle of the bottom of the upper platform 10. The bottom of the cylinder 1001 does not contact the lower platform 7 and is in a suspended state. The motor 701 can drive the turntable 8 to rotate and move the weights 9 of the required weight to the push rod of the cylinder 1001. The top of the base 2 is fixedly connected to the frame 1. The frame 1 is located on one side of the two sets of back plates 6. The frame 1 is divided into an upper part 101 and a lower part 102. The upper part 101 and the lower part 102 are provided with a support part 104 at the same end of the same side. The frame 1 is a frame that runs through the front and back. The upper part 101, the lower part 102 and the support part 104 are integrally formed. The middle of the top of the lower part 102 is provided with a threaded rod 1101. The test platform 11 is fixed on the top of the threaded rod 1101. The test platform 11 can be raised and lowered by rotating the threaded rod 1101. A support platform 1205 is fixed inside the support part 104. A bevel gear 1203 is connected to the top bearing of the support platform 1205. A bevel gear 1202 is connected to the bearing on one side inside the support part 104. The bevel gear 1202 and the bevel gear 1203 mesh. A threaded rod 1204 is connected to the inside of the bevel gear 1203. A handwheel 12 is fixedly connected to one end of the bevel gear 1202. A handle 1201 is fixedly fixed to one side of the top of the handwheel 12. A vision sensor 105 is fixedly fixed to one side inside the support part 104. A fixing block 103 is bolted to one side of the upper part 101. A crossbar 301 is rotatably connected inside the fixing block 103. A weighing pan 303 is suspended at the other end of the crossbar 301. When the device is working, the weight 9 is placed on the weighing pan 303. A connecting rod 302 is rotatably connected to one end of the crossbar 301 near the fixing block 103. The connecting rod 302 is slidably connected to the upper part 101 and the lower part 102 and passes through each other. The connecting rod 302 is set perpendicular to the horizontal plane. The connecting rod 302 can move up and down through the lever assembly 3. A pressing part 5 is fixed at the bottom of the connecting rod 302. The bottom of the pressing part 5 is fixed with a pressing head 501. The bottom of the pressing head 501 is rounded. The top of the connecting rod 302 is connected to a dial indicator 4. The dial indicator 4 is connected to an external computer and can automatically time the movement. The downward displacement is calculated by the probe of the pressing dial indicator 4. The connecting rod 302, the pressure head 501 and the threaded rod 1101 are coaxially arranged. The diameter of the lower pressure part 5 is larger than the diameter of the connecting rod 302, thereby limiting the displacement stroke of the connecting rod 302. The top of the threaded rod 1204 abuts against the bottom of the crossbar 301.

[0015] Working principle: During the hardness test, the test platform 11 is first rotated to the designated position by the threaded rod 1101. Then, the resin sample is placed on the test platform 11. The handwheel 12 is rotated to make the indenter 501 contact the sample. When the dial indicator 4 senses the downward pressure, the computer starts timing. After a period of time, the vision sensor 105 identifies the downward position of the weighing pan 303 and sends an electrical signal to the motor 602. The motor 602 drives the threaded rod 603 to rotate, thereby realizing the up and down movement of the lower platform 7, so that the lower platform 7 moves to the position of the weighing pan. At the level of 303, drive motor 701 rotates turntable 8, allowing selection of different weights 9. The desired weight 9 is rotated to one side of the weighing pan 303, driving cylinder 1001. The push rod of cylinder 1001 pushes the weight 9 onto the weighing pan 303, recording the reading of dial indicator 4 at this point. After a period of time, the reading of dial indicator 4 is recorded again. These two readings are then substituted into the formula to calculate whether the sample's resistance to deformation is qualified, thus determining the indentation hardness of the resin sample. This achieves automated weighting and testing.

[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automated resin sample indentation hardness testing device, comprising a base (2) and two sets of support plates (6), characterized in that: Two sets of back plates (6) are fixedly connected to the top of the base (2). The upper and lower ends of each set of back plates (6) are connected to a threaded rod (603) via bearings. A motor (602) is fixedly connected to the top of the back plate (6). The top of the threaded rod (603) is connected to the output end of the motor (602) via a coupling. A threaded sleeve (601) is threadedly connected to the shaft of the threaded rod (603). An upper platform (10) and a lower platform (7) are fixedly connected to both ends of the threaded sleeve (601). A turntable (8) is set on the top of the lower platform (7). Weights (9) of different weights are set along the circumference of the turntable (8). A motor (701) is fixed at the bottom of the lower platform (7). The output shaft of the motor (701) passes through the lower platform (7) and is keyed to the turntable (8). A cylinder (1001) is fixed in the middle of the bottom of the upper platform (10). The bottom of the cylinder (1001) does not contact the lower platform (7).

2. The automated resin sample indentation hardness testing device according to claim 1, characterized in that: The base (2) is fixedly connected to the top of the frame (1). The frame (1) is located on one side of the two sets of back plates (6). The frame (1) is divided into an upper part (101) and a lower part (102). The upper part (101) and the lower part (102) are provided with a support part (104) at the same end. The frame (1) is a frame that runs through the front and back. The upper part (101), the lower part (102) and the support part (104) are integrally formed. The lower part (102) is provided with a threaded rod (1101) in the middle of the top. The test bench (11) is fixed on the top of the threaded rod (1101).

3. The automated resin sample indentation hardness testing device according to claim 2, characterized in that: A support platform (1205) is fixed inside the support part (104). A bevel gear two (1203) is connected to the top bearing of the support platform (1205). A bevel gear one (1202) is connected to the bearing on one side inside the support part (104). The bevel gear one (1202) and the bevel gear two (1203) mesh. A threaded rod three (1204) is threaded inside the bevel gear two (1203). A handwheel (12) is fixedly connected to one end of the bevel gear one (1202). A handle (1201) is fixed to one side of the top of the handwheel (12). A vision sensor (105) is fixed to one side inside the support part (104).

4. The automated resin sample indentation hardness testing device according to claim 3, characterized in that: A fixing block (103) is bolted to one side of the upper part (101). A crossbar (301) is rotatably connected inside the fixing block (103). A weight pan (303) is suspended at the other end of the crossbar (301). When the device is working, the weight (9) is placed on the weight pan (303). A connecting rod (302) is rotatably connected to one end of the crossbar (301) near the fixing block (103). The connecting rod (302) is slidably connected to the upper part (101) and the lower part (102) and penetrates each other. The connecting rod (302) is set perpendicular to the horizontal plane. A pressing part (5) is fixed at the bottom of the connecting rod (302).

5. The automated resin sample indentation hardness testing device according to claim 4, characterized in that: The bottom of the pressing part (5) is fixed with a pressure head (501), the bottom of the pressure head (501) is provided with rounded corners, the top of the connecting rod (302) is connected to a dial indicator (4), and the dial indicator (4) is connected to an external computer.

6. The automated resin sample indentation hardness testing device according to claim 5, characterized in that: The connecting rod (302), the pressure head (501) and the threaded rod (1101) are coaxially arranged. The diameter of the lower pressing part (5) is larger than the diameter of the connecting rod (302). The top of the threaded rod (1204) abuts against the bottom of the crossbar (301).

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