A strength detection device for plastic parts

Abstract

This utility model discloses a strength testing device for plastic parts, belonging to the field of plastic parts technology. The key technical features include a testing machine with an adjustment assembly fixedly connected inside. A clamping assembly is fixedly connected to the top of the adjustment assembly. The clamping assembly includes a fixed arm, which is fixedly connected to the top of the adjustment assembly. A connecting plate is rotatably connected to the surface of the fixed arm, and a movable arm is rotatably connected to the side of the connecting plate away from the fixed arm. A stop bar is inserted inside the movable arm. By setting the clamping assembly, continuous testing of a series of plastic samples of different sizes can be performed without interrupting the testing process to change the clamps, enabling rapid and uninterrupted testing and further improving overall testing efficiency. By setting the adjustment assembly, the position of the clamping assembly can be adjusted, thereby adjusting the position of the fixed plastic test sample to ensure that the sample center is located at the loading point of the testing machine.

Description

Technical Field

[0001] This utility model relates to the field of plastic parts technology, and in particular to a strength testing device for plastic parts. Background Technology

[0002] Plastics are polymers made from monomers through addition or condensation polymerization. They have moderate resistance to deformation, falling between fibers and rubber, and are composed of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants.

[0003] After plastic products are manufactured and processed, they usually need to undergo bending strength testing, especially plastic rods and sheets. The bending strength testing of plastic products generally requires the use of specialized testing equipment. Currently, there are many different types of testing devices on the market, but the existing testing devices have overly simple structural designs. In actual use, their testing items are too limited, and their adjustability is poor. They cannot simulate performance testing under different conditions, resulting in poor actual testing results.

[0004] An existing patent (publication number: CN217466524U) provides a device for testing the bending strength and bending modulus of plastics. This utility model, through the design of a simple servo drive mechanism, limit adjustment mechanism and intelligent detection mechanism, can quickly complete the testing of the bending strength and bending modulus of different plastic products, greatly improving work efficiency.

[0005] To address the aforementioned issues, existing patents offer solutions. In the process of testing the bending strength of plastic parts, multiple different samples are typically prepared. To fix the test position of the samples during the test, multiple corresponding clamps are needed to prevent the samples from being damaged at the clamping points during the test. However, frequent changes of clamps lead to a decrease in efficiency during continuous testing.

[0006] Therefore, a strength testing device for plastic parts is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a strength testing device for plastic parts, which can solve the problem that in the existing process of testing the bending strength of plastic parts, multiple different samples are usually prepared, and multiple corresponding clamps are needed to fix the test position of the samples during the test to avoid damage to the samples from the clamping parts during the test. However, the efficiency of the continuous test process is reduced by frequently changing the clamps.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a strength testing device for plastic parts, comprising a testing machine, wherein an adjustment component is fixedly connected inside the testing machine, and a clamping component is fixedly connected to the top of the adjustment component;

[0009] The clamping assembly includes a fixed arm, which is fixedly connected to the top of the adjusting assembly. A connecting plate is rotatably connected to the surface of the fixed arm, and a movable arm is rotatably connected to the side of the connecting plate away from the fixed arm. A stop bar is inserted into the interior of the movable arm, and a baffle is movably connected to the interior of the movable arm.

[0010] Preferably, the adjustment assembly includes an adjustment seat, which is fixedly connected inside the testing machine, a limit seat is movably connected inside the adjustment seat, and a screw is rotatably connected inside the adjustment seat.

[0011] Preferably, the adjusting seat has a connecting block inside, the side of the connecting block near the limiting seat is fixedly connected to the limiting seat, and the side of the connecting block near the screw is threadedly connected to the screw.

[0012] Preferably, the limiting seat has a limiting groove inside that cooperates with the baffle, and the limiting seat has an adjusting groove inside that cooperates with the connecting plate.

[0013] Preferably, the limiting seat is internally threaded with a clamping rod, the side of the clamping rod near the baffle is round, an extension rod is inserted into the front side of the clamping rod, and a fixing pin is inserted into the inside of the clamping rod and the extension rod.

[0014] Preferably, a throttle is inserted into the front side of the extension rod, and a connecting groove is provided inside both the clamping rod and the extension rod.

[0015] Preferably, the fixed arm has a positioning groove inside that cooperates with the stop bar, and the connecting plate has a rotating bolt rotatably connected inside.

[0016] Preferably, the testing machine includes a base, a support frame is fixedly connected to the top of the base, and a loader is fixedly connected to the top of the support frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application enables continuous testing of a series of plastic samples of different sizes by setting up a clamping component, without interrupting the testing process to change the clamps, thus achieving rapid and uninterrupted testing and further improving the overall testing efficiency.

[0019] 2. This application adjusts the position of the clamping component by setting an adjustment component, thereby adjusting the position of the fixed plastic test sample and ensuring that the center of the sample is located at the loading point of the tester. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the strength testing device for plastic parts according to this utility model;

[0021] Figure 2 This is a schematic diagram of the clamping assembly of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the adjustment component of this utility model;

[0023] Figure 4 This is a schematic diagram of the clamping rod of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the testing machine of this utility model.

[0025] In the diagram, 1. Testing machine; 101. Base; 102. Support frame; 103. Loader; 2. Adjustment assembly; 201. Adjustment seat; 202. Limit seat; 203. Screw; 3. Clamping assembly; 301. Fixed arm; 302. Connecting plate; 303. Movable arm; 304. Stop bar; 305. Baffle; 4. Connecting block; 5. Limit groove; 6. Adjustment groove; 7. Clamping rod; 8. Extension rod; 9. Fixing pin; 10. Rotary handle; 11. Connecting groove; 12. Positioning groove; 13. Rotating bolt. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A strength testing device for plastic parts includes a testing machine 1, an adjustment component 2 fixedly connected inside the testing machine 1, and a clamping component 3 fixedly connected to the top of the adjustment component 2.

[0029] The clamping assembly 3 includes a fixed arm 301, which is fixedly connected to the top of the adjusting assembly 2. A connecting plate 302 is rotatably connected to the surface of the fixed arm 301. A movable arm 303 is rotatably connected to the side of the connecting plate 302 away from the fixed arm 301. A stop bar 304 is inserted into the interior of the movable arm 303. A baffle 305 is movably connected to the interior of the movable arm 303.

[0030] In this embodiment: the adjusting component 2 is fixed by the testing machine 1, and the clamping component 3 is fixed by the adjusting component 2, thereby achieving the position adjustment effect of the clamping component 3, which facilitates the adjustment of the sample center to the loading position. Then, the clamping component 3 is used to quickly fix samples of different specifications. The fixing arm 301 is fixed by the adjusting component 2, and the rotating position of the connecting plate 302 is fixed by the fixing arm 301. The connecting plate 302 is used to achieve the connection effect between the fixing arm 301 and the movable arm 303. Then, the working position of the stop rod 304 is fixed by the movable arm 303, and the working range of the baffle 305 is limited. Thus, the sample is fixed by the cooperation of the baffle 305 and the stop rod 304.

[0031] Specifically, such as Figure 3 As shown, the adjustment assembly 2 includes an adjustment seat 201, which is fixedly connected inside the testing machine 1. A limit seat 202 is movably connected inside the adjustment seat 201, and a screw 203 is rotatably connected inside the adjustment seat 201.

[0032] Specifically, such as Figure 3 As shown, the adjusting seat 201 has a connecting block 4 inside. The side of the connecting block 4 near the limiting seat 202 is fixedly connected to the limiting seat 202, and the side of the connecting block 4 near the screw 203 is threadedly connected to the screw 203.

[0033] Specifically, such as Figure 3 As shown, the limiting seat 202 has a limiting groove 5 inside that works with the baffle 305, and an adjusting groove 6 inside that works with the connecting plate 302.

[0034] In this embodiment: the adjusting seat 201 is fixed by the testing machine 1, and the range of motion of the limiting seat 202 is fixed by the adjusting seat 201. Then, the rotation position of the screw 203 is fixed by the adjusting seat 201. Then, the range of the connecting block 4 is fixed by the adjusting seat 201. The connecting block 4 is fixedly connected to the limiting seat 202 and threadedly connected to the screw 203, so that when the screw 203 rotates, it drives the limiting seat 202 to move. Then, the limiting groove 5 opened inside the limiting seat 202 achieves the effect of limiting the range of motion of the baffle 305. And the adjusting groove 6 opened inside the limiting seat 202 facilitates the movement of the connecting plate 302 and the movable arm 303.

[0035] Specifically, such as Figure 4 As shown, the limiting seat 202 has a clamping rod 7 internally threadedly connected. The side of the clamping rod 7 near the baffle 305 is round. An extension rod 8 is inserted into the front side of the clamping rod 7. A fixing pin 9 is inserted into the inside of the clamping rod 7 and the extension rod 8.

[0036] Specifically, such as Figure 4As shown, a throttle 10 is inserted into the front side of the extension rod 8, and a connecting groove 11 is provided inside both the clamping rod 7 and the extension rod 8.

[0037] In this embodiment: the working position of the clamping rod 7 is fixed by the limiting seat 202, the extension rod 8 is fixed by the clamping rod 7, the extension rod 8 and the clamping rod 7 are connected by the fixing pin 9, and the throttle 10 is fixed by the extension rod 8. Then, the throttle 10 is used to facilitate the rotation of the extension rod 8 and the clamping rod 7, and the connecting groove 11 opened inside the clamping rod 7 and the extension rod 8 facilitates their interconnection.

[0038] Specifically, such as Figure 2 As shown, the fixed arm 301 has a positioning groove 12 inside that works with the stop bar 304, and the connecting plate 302 has a rotating bolt 13 inside that is rotatably connected.

[0039] Specifically, such as Figure 1 As shown, the testing machine 1 includes a base 101, a support frame 102 is fixedly connected to the top of the base 101, and a loader 103 is fixedly connected to the top of the support frame 102.

[0040] In this embodiment: the positioning groove 12 inside the fixed arm 301 is used to fix the working position of the stop bar 304, and the working position of the rotating bolt 13 is fixed by the connecting plate 302. The rotating bolt 13 is used to fix the rotation position of the connecting plate 302. Then, the support frame 102 is fixed by the base 101, and the loader 103 is fixed by the support frame 102. Then, the bending strength is tested by the loader 103.

[0041] Working principle: During the plastic bending strength test, the sample is first placed between the fixed arm 301 and the movable arm 303. Then, a suitable baffle 305 is selected according to different sample specifications. The baffle 305 is then placed behind the clamping rod 7, and the stop rod 304 is inserted into the positioning groove 12. Then, the handle 10 is turned to drive the clamping rod 7 to rotate, so that the clamping rod 7 contacts the baffle 305 and drives the baffle 305 and the sample to move. At this time, the movable arm 303 is driven to move because the stop rod 304 contacts the movable arm 303. The range of motion of the movable arm 303 is limited by the connecting plate 302. During this process, the movable arm 303 gradually contacts the fixed arm 301, thereby fixing the sample located between them. Then, the screw 203 is driven to rotate by the external tool, thereby driving the connecting block 4 threadedly connected to the screw 203 to move. At this time, the sample is driven to move, thereby adjusting the center point of the sample to be aligned with the loading point, which facilitates the plastic bending strength test.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A strength testing device for plastic parts, comprising a testing machine (1), characterized in that: An adjustment assembly (2) is fixedly connected inside the testing machine (1), and a clamping assembly (3) is fixedly connected to the top of the adjustment assembly (2); The clamping assembly (3) includes a fixed arm (301), which is fixedly connected to the top of the adjusting assembly (2). A connecting plate (302) is rotatably connected to the surface of the fixed arm (301). A movable arm (303) is rotatably connected to the side of the connecting plate (302) away from the fixed arm (301). A stop bar (304) is inserted into the interior of the movable arm (303). A baffle (305) is movably connected to the interior of the movable arm (303).

2. The strength testing device for plastic parts according to claim 1, characterized in that: The adjustment assembly (2) includes an adjustment seat (201), which is fixedly connected inside the testing machine (1). A limit seat (202) is movably connected inside the adjustment seat (201), and a screw (203) is rotatably connected inside the adjustment seat (201).

3. The strength testing device for plastic parts according to claim 2, characterized in that: The adjusting seat (201) has a connecting block (4) inside. The side of the connecting block (4) near the limiting seat (202) is fixedly connected to the limiting seat (202), and the side of the connecting block (4) near the screw (203) is threadedly connected to the screw (203).

4. The strength testing device for plastic parts according to claim 2, characterized in that: The limiting seat (202) has a limiting groove (5) inside that cooperates with the baffle (305), and the limiting seat (202) has an adjusting groove (6) inside that cooperates with the connecting plate (302).

5. A strength testing device for plastic parts according to claim 2, characterized in that: The limiting seat (202) is internally threaded with a clamping rod (7). The side of the clamping rod (7) near the baffle (305) is round. An extension rod (8) is inserted into the front side of the clamping rod (7). A fixing pin (9) is inserted into the inside of the clamping rod (7) and the extension rod (8).

6. The strength testing device for plastic parts according to claim 5, characterized in that: A throttle (10) is inserted into the front side of the extension rod (8), and a connecting groove (11) is provided inside both the clamping rod (7) and the extension rod (8).

7. The strength testing device for plastic parts according to claim 1, characterized in that: The fixed arm (301) has a positioning groove (12) inside that works with the stop bar (304), and the connecting plate (302) has a rotating bolt (13) inside that is rotatably connected.

8. The strength testing device for plastic parts according to claim 1, characterized in that: The testing machine (1) includes a base (101), a support frame (102) is fixedly connected to the top of the base (101), and a loader (103) is fixedly connected to the top of the support frame (102).

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