Plastic pendulum impact testing machine

Abstract

The utility model relates to the technical field of impact tests, and discloses a plastic pendulum impact testing machine which comprises a supporting frame, a protection plate is fixedly installed on the upper surface of the supporting frame, a controller is fixedly installed on the inner wall of the protection plate, a swing frame is movably installed on the inner wall of the controller, and a clamping assembly is fixedly installed on the upper surface of the supporting frame. The inner wall of the protection plate is provided with a buffer mechanism capable of protecting the plastic test piece clamped on the clamping assembly from flying out due to impact. According to the plastic pendulum bob impact testing machine, splashing fragments impact the surface of a bag body, a rotating plate rotates around a fixed rod to a certain degree, a limiting ball moves on the inner wall of a movable annular groove under the action of a reset spring and moves to the position of a limiting hole to slow down, the splashing fragments are prevented from being rebounded out due to too fast rotation, and the service life of the bag body is prolonged. And after the impact force of the non-Newtonian liquid fragments in the capsule body is buffered and reduced, the fragments are better prevented from rebounding, and the tester is better protected.

Description

Technical Field

[0001] The utility model relates to the technical field of impact testing, in particular to a plastic pendulum impact testing machine. Background Art

[0002] The pendulum impact tester is used to test the impact resistance of metal and non-metallic materials under dynamic loads in order to determine the properties of the materials under dynamic loads. The punch of the pendulum impact tester strikes and passes through the specimen at a certain speed, and the energy consumed by the punch is measured to evaluate the ability to resist pendulum impact. Currently, during the production of plastics, it is necessary to test their impact resistance using a pendulum impact tester. When in use, the specimen is clamped on the load-bearing platform near the bottom of the support. The pendulum is swung down from a high place to hit the specimen, breaking it, and obtaining a series of measurement parameters during the impact.

[0003] According to a publicly disclosed pendulum impact testing machine for plastic testing (Announcement No.: CN219737137U), the above application utilizes a dual-axis motor to drive the two protective covers to move closer together and close, thereby adjusting the position of the protective net so that there is no gap between the two protective covers, preventing broken test pieces from flying out of the protective covers, making the impact test safer, more convenient for staff to use, and improving practicality.

[0004] However, during actual use, when the above-mentioned equipment is hit by the pendulum, the broken specimens are likely to fly out at high speed along the direction of the impact force given by the pendulum, and some broken materials are likely to rebound and fly out from the inside of the protective plate, which is not conducive to the safety of nearby operators. In view of this, we proposed a plastic pendulum impact testing machine. Utility Model Content

[0005] The purpose of the present utility model is to provide a plastic pendulum impact testing machine to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a plastic pendulum impact testing machine, comprising a support frame, a protective plate fixedly mounted on the upper surface of the support frame, a controller fixedly mounted on the inner wall of the protective plate, a swing frame movably mounted on the inner wall of the controller, a clamping assembly fixedly mounted on the upper surface of the support frame, the inner wall of the protective plate is provided with a buffer mechanism that can protect the plastic test piece clamped on the clamping assembly from flying out due to impact, and a protective mechanism that can protect the buffer mechanism is provided inside the protective plate.

[0007] Preferably, the inner wall of the protective plate is provided with a rotating groove, the inner wall of the rotating groove is fixedly connected to a torsion spring, one end of the torsion spring away from the inner wall of the rotating groove is fixedly connected to a fixing rod, the end of the fixing rod is fixedly connected to the rotating plate, the surface of the rotating plate is fixedly mounted with a capsule, the inner wall of the protective plate is provided with a movable ring groove, the surface of the movable ring groove is provided with a limiting hole, the side wall of the rotating plate is provided with a sliding hole, the inner wall of the sliding hole is fixedly connected to a reset spring, and the end of the reset spring away from the inner wall of the sliding hole is fixedly connected to a limiting ball.

[0008] Preferably, the protection mechanism includes a convex block, the convex block is fixedly mounted on the surface of the capsule, an arc piece is fixedly mounted on the side wall of the convex block, and a wave-shaped triangular groove is opened on the surface of the convex block.

[0009] Preferably, there are a plurality of the protrusions, and the plurality of protrusions are fixedly mounted on the arc surface of the capsule along an array of the arc surface of the capsule.

[0010] Preferably, the cross-sectional shape of the limiting hole is adapted to the cross-sectional shape of the limiting ball, and there are a plurality of limiting holes, which are arranged in a circular array on the side wall of the protective plate.

[0011] Preferably, the diameter of the rotation groove is adapted to the diameter of the fixing rod, and there are several rotation grooves, which are arranged in a circular array on the inner wall of the protective plate, and rotation grooves are provided on both sides of the inner portion of the protective plate.

[0012] Preferably, the edge of the rotating plate is arc-shaped, and the edge of the capsule fits the edge of the rotating plate, so as to better protect the inner wall of the protective plate.

[0013] Compared with the prior art, the present invention provides a plastic pendulum impact testing machine with the following beneficial effects:

[0014] 1. The plastic pendulum impact tester is equipped with a buffer mechanism. When flying debris impacts the surface of the capsule, the rotating plate rotates to a certain extent around the fixed rod. Under the action of the return spring, the limiting ball moves on the inner wall of the movable ring groove to the position of the limiting hole to slow down the speed and prevent the flying debris from rebounding due to excessive rotation. The non-Newtonian liquid inside the capsule reduces the impact force of the debris, better cushioning the impact of the plastic test piece clamped on the clamping assembly and better protecting the test personnel.

[0015] 2. The plastic pendulum impact tester is equipped with a protective mechanism. The different shapes of fragments can easily scratch the material on the surface of the capsule, reducing the service life of the capsule. The setting of the protrusions thickens the surface of the capsule. At the same time, the wave-shaped triangular grooves on the protrusions can shrink the fragments with reduced impact force toward the center, wrapping and collecting the fragments. At the same time, the arc pieces between the protrusions also unload some fragments and clamp some fragments, extending the service life of the capsule and better collecting and buffering the fragments. The protective mechanism protects the surface of the component capsule on the buffer mechanism, thereby protecting the test personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a side view of the main structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the partial structure of the protective plate of the utility model;

[0019] Figure 4 This is a schematic diagram of the local structure of the rotating plate of the utility model;

[0020] Figure 5 This is a schematic diagram of the partial explosion structure of the rotating plate of the utility model;

[0021] Figure 6 It is a schematic diagram of a partial top view of the rotating plate of the utility model.

[0022] In the figure: 1. Support frame; 2. Protective plate; 3. Buffer mechanism; 301. Capsule; 302. Rotating plate; 303. Rotating groove; 304. Moving ring groove; 305. Limiting hole; 306. Fixed rod; 307. Torsion spring; 308. Sliding hole; 309. Return spring; 310. Limiting ball; 4. Protective mechanism; 401. Bump; 402. Arc sheet; 403. Wave-shaped triangular groove; 5. Controller; 6. Swinging frame; 7. Clamping assembly. DETAILED DESCRIPTION

[0023] like Figures 1-6As shown, the utility model provides a technical solution: a plastic pendulum impact testing machine, comprising a support frame 1, a protective plate 2 fixedly installed on the upper surface of the support frame 1, a controller 5 fixedly installed on the inner wall of the protective plate 2, a swing frame 6 movably installed on the inner wall of the controller 5, a clamping assembly 7 fixedly installed on the upper surface of the support frame 1, an inner wall of the protective plate 2 is provided with a buffer mechanism 3 that can protect the plastic test piece clamped on the clamping assembly 7 from flying out due to impact, a protective mechanism 4 that can protect the buffer mechanism 3 is provided inside the protective plate 2, and the buffer mechanism 3 includes a capsule 301, a rotating plate 302, a rotating groove 303, a movable annular groove 304, a limiting hole 305, a fixed rod 306, a torsion spring 307, a sliding hole 308, a reset spring 309, and a limiting ball 310.

[0024] In one embodiment of the present utility model, a rotating groove 303 is provided on the inner wall of the protective plate 2, and the inner wall of the rotating groove 303 is fixedly connected to a torsion spring 307, and one end of the torsion spring 307 away from the inner wall of the rotating groove 303 is fixedly connected to a fixing rod 306, and the end of the fixing rod 306 is fixedly connected to the rotating plate 302, and the surface of the rotating plate 302 is fixedly installed with a capsule 301, and a movable annular groove 304 is provided on the inner wall of the protective plate 2, and a limiting hole 305 is provided on the surface of the movable annular groove 304, and a sliding hole 308 is provided on the side wall of the rotating plate 302, and the inner wall of the sliding hole 308 is fixedly connected to a reset spring 309, and one end of the reset spring 309 away from the inner wall of the sliding hole 308 is fixedly connected to a limiting ball 310.

[0025] In addition, the protective mechanism 4 includes a protrusion 401, which is fixedly installed on the surface of the capsule 301. The side wall of the protrusion 401 is fixedly installed with an arc piece 402. The surface of the protrusion 401 is provided with a wavy triangular groove 403. The number of protrusions 401 is set to be several. Several protrusions 401 are fixedly installed on the arc surface of the capsule 301 along the arc surface array of the capsule 301. The surface of the capsule 301 is filled with protrusions 401 to protect the surface of the capsule 301.

[0026] In an embodiment of the present invention, the cross-sectional shape of the limiting hole 305 is adapted to the cross-sectional shape of the limiting ball 310, and the number of the limiting holes 305 is set to be several, and the plurality of limiting holes 305 are opened in a circular array on the side wall of the protective plate 2, and the diameter of the rotating groove 303 is adapted to the diameter of the fixing rod 306, and the number of the rotating grooves 303 is set to be several, and the plurality of rotating grooves 303 are opened in a circular array on the inner wall of the protective plate 2, and the rotating grooves 303 are opened on both sides of the interior of the protective plate 2, and the edge of the rotating plate 302 is arc-shaped. shape, the edge of the capsule 301 fits the edge of the rotating plate 302, and there are several rotating plates 302. Several rotating plates 302 are fixed to the inner wall of the protective plate 2 in a circular array. The edges of the capsule 301 on the rotating plate 302 are blocked with each other for better protection. The interior of the capsule 301 is filled with non-Newtonian liquid to collect the fragments after the impact force is reduced. The clamping assembly 7 includes a fixed seat and a threaded rod clamp, which is convenient for fixing the specimen and facilitating the subsequent testing of the specimen by the swinging member on the swinging frame 6.

[0027] In the present invention, when in use, the flying debris impacts the surface of the capsule 301, causing the rotating plate 302 to rotate to a certain extent around the fixed rod 306. The limiting ball 310 moves on the inner wall of the movable ring groove 304 under the action of the reset spring 309, moves to the position of the limiting hole 305, and slows down to prevent the flying debris from bouncing back due to excessive rotation. After the impact force of the non-Newtonian liquid debris inside the capsule 301 is buffered and reduced, it can better prevent the debris from bouncing back and better protect the test personnel.

[0028] Furthermore, the different shapes of the fragments can easily cause scratches on the material on the surface of the capsule 301, reducing the service life of the capsule 301. The setting of the protrusion 401 thickens the surface of the capsule 301. At the same time, the wavy triangular groove 403 on the protrusion 401 can shrink the fragments with reduced impact force toward the center, wrap and collect the fragments, and at the same time, the arc pieces 402 between the protrusions 401 also unload some fragments and clamp some fragments, extending the service life of the capsule 301, better collecting and buffering the fragments, and protecting the test personnel. The clamping component 7 fixes the specimen and controls the swing frame 6 to impact.

[0029] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A plastic pendulum impact tester, comprising a support frame (1), a protective plate (2) fixedly mounted on the upper surface of the support frame (1), a controller (5) fixedly mounted on the inner wall of the protective plate (2), a swing frame (6) movably mounted on the inner wall of the controller (5), and a clamping assembly (7) fixedly mounted on the upper surface of the support frame (1), characterized in that: The inner wall of the protective plate (2) is provided with a buffer mechanism (3) capable of protecting a plastic test piece clamped on a clamping assembly (7) from flying out due to impact, and the interior of the protective plate (2) is provided with a protective mechanism (4) capable of protecting the buffer mechanism (3).

2. A plastic pendulum impact testing machine according to claim 1, characterized in that: The inner wall of the protective plate (2) is provided with a rotation groove (303), the inner wall of the rotation groove (303) is fixedly connected to a torsion spring (307), one end of the torsion spring (307) away from the inner wall of the rotation groove (303) is fixedly connected to a fixing rod (306), the end of the fixing rod (306) is fixedly connected to the rotation plate (302), the surface of the rotation plate (302) is fixedly mounted with a capsule (301), the inner wall of the protective plate (2) is provided with a movable annular groove (304), the surface of the movable annular groove (304) is provided with a limiting hole (305), the side wall of the rotation plate (302) is provided with a sliding hole (308), the inner wall of the sliding hole (308) is fixedly connected to a reset spring (309), and one end of the reset spring (309) away from the inner wall of the sliding hole (308) is fixedly connected to a limiting ball (310).

3. A plastic pendulum impact testing machine according to claim 1, characterized in that: The protective mechanism (4) comprises a convex block (401), the convex block (401) is fixedly mounted on the surface of the capsule (301), an arc piece (402) is fixedly mounted on the side wall of the convex block (401), and a wave-shaped triangular groove (403) is provided on the surface of the convex block (401).

4. A plastic pendulum impact testing machine according to claim 3, characterized in that: The number of the protrusions (401) is set to be several, and the several protrusions (401) are fixedly installed on the arc surface of the capsule (301) along the arc surface array of the capsule (301).

5. The plastic pendulum impact testing machine according to claim 2, characterized in that: The cross-sectional shape of the limiting hole (305) is adapted to the cross-sectional shape of the limiting ball (310), and a plurality of the limiting holes (305) are provided, and the plurality of limiting holes (305) are arranged in a circular array on the side wall of the protective plate (2).

6. A plastic pendulum impact testing machine according to claim 2, characterized in that: The diameter of the rotating groove (303) is adapted to the diameter of the fixing rod (306), and a plurality of the rotating grooves (303) are provided. The plurality of rotating grooves (303) are arranged in a circular array on the inner wall of the protective plate (2), and the rotating grooves (303) are provided on both sides of the interior of the protective plate (2).

7. The plastic pendulum impact testing machine according to claim 2, characterized in that: The edge of the rotating plate (302) is arc-shaped, and the edge of the capsule (301) is in contact with the edge of the rotating plate (302).

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