Simply supported beam impact testing machine for plastics

Abstract

The utility model belongs to the technical field of impact testing machines, and discloses a simply supported beam impact testing machine for plastics, which comprises a bottom plate, a clamping piece for clamping plastics to be tested is mounted at the top of the bottom plate, a guide rail is further vertically and fixedly connected to the top of the bottom plate, and a movable frame is slidably connected to the guide rail along the length direction of the guide rail. One side of the moving frame is in screwed connection with a third screw, one side, adjacent to the third screw, of the moving frame is fixedly connected with a top plate, the free end of the third screw extends into the moving frame to abut against the guide rail, an impact part used for impacting to-be-tested plastic is installed on the top plate, the moving frame is pulled to move along the guide rail, and the third screw on one side of the guide rail is rotated; the guide rail and the top plate are fixed at positions required by personnel, so that the position of the impact piece can be adjusted, the device can adjust the test position of the pendulum bob according to test requirements, the personnel do not need to use different impact testing machines, and the test cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of impact testing machines, and in particular relates to a simply supported beam impact testing machine for plastics. Background Art

[0002] During the production process, plastics require impact testing to determine their impact toughness. Existing plastic impact tests are primarily conducted using pendulum-type impact testing machines. For example, Chinese Patent Publication No. CN 219573806 U discloses a simply supported beam impact testing device for plastic impact testing. The device comprises an impact pendulum, a pendulum, a supporting beam, a fixing assembly, and a pendulum-releasing mechanism. The pendulum is fixed to the tail end of the impact pendulum and screwed to the impact pendulum. The impact pendulum is fixed to the supporting beam, and the top of the impact pendulum is rotatably connected to the supporting beam. The pendulum-releasing mechanism is fixed to the testing device and is used to support and release the impact pendulum. The fixing assembly is located below the pendulum and is used to place and position the test piece. Although this device can test plastics, due to the different sizes and specifications of produced plastics, the pendulum's test position cannot be adjusted according to test requirements. Operators need to use different impact testing machines to test plastics of different sizes and specifications, resulting in high testing costs. Utility Model Content

[0003] The purpose of the present utility model is to provide a simply supported beam impact testing machine for plastics to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a simply supported beam impact testing machine for plastics, comprising a base plate, a clamping piece for clamping the plastic to be tested is installed on the top of the base plate, and a guide rail is also vertically fixedly connected to the top of the base plate, a movable mobile frame is slidably connected to the guide rail along its own length direction, a third screw is screwedly connected to one side of the mobile frame, and a top plate is fixedly connected to the side of the mobile frame adjacent to the third screw, the free end of the third screw extends to the inside of the mobile frame to abut the guide rail, and an impact piece for impacting the plastic to be tested is installed on the top plate.

[0005] Preferably, the impact member includes a pendulum, the bottom of the top plate is fixedly connected to a connecting frame, the interior of the connecting frame is rotatably connected to a roller, one side of the roller is fixedly connected to a connecting rope, and the free end of the connecting rope is fixedly connected to the pendulum.

[0006] Preferably, the impact member includes a pendulum, a connecting frame is fixedly connected to the bottom of the top plate, a roller is rotatably connected to the inside of the connecting frame, a connecting rope is fixedly connected to one side of the roller, a through-hole is opened on the top plate, and a first screw is screwed and connected to one side of the top plate, the free end of the connecting rope passes through the through-hole from the bottom of the top plate, the free end of the first screw extends to the inside of the through-hole and contacts the connecting rope, a connecting ring is provided on the connecting rope, one side of the connecting ring is fixedly connected to the pendulum, and the other side is screwed and connected to the second screw, and the free end of the second screw extends to the inside of the connecting ring and contacts the connecting rope.

[0007] Preferably, the free end of the connecting rope is fixedly connected to a pull ring, and a pull hole is provided on the pull ring.

[0008] Preferably, the clamping member includes two support plates, both of which are fixedly connected to the top of the base plate, and the opposite sides of the two support plates are fixedly connected to electric push rods, the telescopic ends of the two electric push rods are connected to clamps, and the bottom of the base plate is fixedly connected to a base foot.

[0009] Preferably, the guide rail is recessed along its length direction toward the third screw to form a side groove.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] (1) The utility model moves the movable frame along the guide rail and rotates the third screw on one side of the guide rail to fix the guide rail and the top plate at the position required by the personnel, so that the position of the impact member can be adjusted, and the device can adjust the test position of the pendulum according to the test requirements, so that personnel do not need to use different impact testing machines to test plastics of different sizes and specifications, thereby reducing testing costs.

[0012] (2) The utility model adjusts the length of the connecting rope below the top by pulling the connecting rope to move in the through hole and rotating the first screw on one side of the top plate so that the first screw contacts the connecting rope, thereby further increasing the adjustment range of the pendulum and the test range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is one of the three-dimensional diagrams of the present utility model;

[0014] Figure 2 This is the second stereogram of the present utility model;

[0015] Figure 3 It is a front view of the utility model;

[0016] Figure 4 This is the third stereogram of the present utility model;

[0017] In the figure: 1. Base plate; 2. Base foot; 3. Support plate; 4. Clamp; 5. Electric push rod; 6. Connecting frame; 7. Guide rail; 8. Side groove; 9. Moving frame; 10. Roller; 11. Top plate; 12. Through hole; 13. Connecting rope; 14. Pull ring; 15. First screw; 16. Pendulum; 17. Connecting ring; 18. Second screw; 19. Third screw. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 4 As shown, the utility model provides the following technical solutions:

[0020] A simply supported beam impact testing machine for plastics includes a base plate 1, a clamping piece for clamping the plastic to be tested is installed on the top of the base plate 1, and a guide rail 7 is also vertically fixedly connected to the top of the base plate 1. A movable mobile frame 9 is slidably connected to the guide rail 7 along its own length direction. A third screw 19 is screwed together on one side of the mobile frame 9, and a top plate 11 is fixedly connected to the side of the mobile frame 9 adjacent to the third screw 19. The free end of the third screw 19 extends to the inside of the mobile frame 9 to contact the guide rail 7. An impact piece for impacting the plastic to be tested is installed on the top plate 11.

[0021] Through the above technical solution, when personnel need to test plastic, they place the device at the use position, then place the plastic to be tested on the clamping piece, and fix the plastic with the clamping piece. After the plastic is fixed, pull the movable frame 9 to move the movable frame 9 along the guide rail 7, and when the movable frame 9 moves, it will drive the top plate 11 and the impact piece to move together. After the position of the movable frame 9 is adjusted, rotate the third screw 19 on one side of the movable frame 9 to fix the movable frame 9 at the position required by the personnel, thereby completing the adjustment of the top plate 11 and the impact piece, pull the impact piece, so that the free end of the impact piece rises to a position horizontal with the top plate 11, release the impact piece, and the impact piece falls down due to gravity, and then impacts the plastic, and the impact piece impacts the plastic, thereby testing the plastic.

[0022] In addition, regarding the above-mentioned impact member, Figure 1-Figure 4 As shown, the following implementation manner is also provided:

[0023] Implementation Method 1

[0024] The impact member includes a pendulum 16 , a connecting frame 6 is fixedly connected to the bottom of the top plate 11 , a roller 10 is rotatably connected inside the connecting frame 6 , a connecting rope 13 is fixedly connected to one side of the roller 10 , and a free end of the connecting rope 13 is fixedly connected to the pendulum 16 .

[0025] In this embodiment, after the plastic is fixed, the pendulum 16 is pulled to rise to a position horizontal with the top plate 11. The pendulum 16 is released and falls downward due to gravity, thereby pulling the connecting rope 13 and cooperating with the roller 10 to make the pendulum 16 impact the plastic. The plastic is tested by the impact of the pendulum 16 on the plastic.

[0026] Implementation Method 2

[0027] The impact member includes a pendulum 16, a connecting frame 6 is fixedly connected to the bottom of the top plate 11, and a roller 10 is rotatably connected to the inside of the connecting frame 6. A connecting rope 13 is fixedly connected to one side of the roller 10. A through-hole 12 is opened on the top plate 11, and a first screw 15 is screwed and connected to one side of the top plate 11. The free end of the connecting rope 13 passes through the through-hole 12 from the bottom of the top plate 11, and the free end of the first screw 15 extends to the inside of the through-hole 12 to interfere with the connecting rope 13. A connecting ring 17 is provided on the connecting rope 13, and one side of the connecting ring 17 is fixedly connected to the pendulum 16, and the other side is screwed and connected to the second screw 18. The free end of the second screw 18 extends to the inside of the connecting ring 17 to interfere with the connecting rope 13.

[0028] In this embodiment, after the plastic is fixed, the free end of the connecting rope 13 is pulled to move the free end of the connecting rope 13 relative to the through hole 12, thereby adjusting the length of the connecting rope 13 extending out of the through hole 12. When the extending length of the connecting rope 13 below the top plate 11 is adjusted, the first screw 15 is rotated to make the first screw 15 contact the connecting rope 13, thereby fixing the adjusted length of the connecting rope 13, pulling the connecting ring 17 to slide the connecting ring 17 along the connecting rope 13 until the connecting ring 17 moves to the lowest position of the connecting rope 13, tightening the second screw 18 on the connecting ring 17, so that the connecting ring 17 and the pendulum 16 are fixed at the position required by the personnel, pulling the pendulum 16 to make the pendulum 16 rise to a position horizontal with the top plate 11, loosening the pendulum 16, and the pendulum 16 falls down due to gravity, thereby pulling the connecting rope 13, and through the cooperation of the roller 10, the pendulum 16 impacts the plastic, thereby testing the plastic.

[0029] Furthermore, when personnel need to adjust the swing amplitude of the pendulum 16, in order to facilitate pulling the connecting rope 13, as shown in FIG. Figure 1-Figure 3 As shown, the free end of the connecting rope 13 is fixedly connected to a pull ring 14 , and a pull hole is opened on the pull ring 14 .

[0030] Specifically, in one embodiment, regarding the above-mentioned clamping member, as Figure 1-Figure 3 As shown, the clamping part includes two support plates 3, both of which are fixedly connected to the top of the base plate 1, and the opposite sides of the two support plates 3 are fixedly connected to electric push rods 5, the telescopic ends of the two electric push rods 5 are connected to the clamping plate 4, and the bottom of the base plate 1 is fixedly connected to the base foot 2.

[0031] In this embodiment, the support plate 3 is supported by the base plate 1, and the plastic to be tested is placed between the two clamping plates 4. The electric push rod 5 works to drive the clamping plates 4 to move, and the plastic is clamped by the clamping plates 4. After the plastic is fixed, the impact test can be performed.

[0032] When the third screw 19 contacts the guide rail 7, in order to make the adjusted position of the third screw 19 more secure, as shown in FIG. Figure 1 、 Figure 2 、 Figure 4 As shown, the guide rail 7 is recessed along its length direction toward the side of the third screw rod 19 to form a side groove 8.

[0033] In this embodiment, when the third screw 19 contacts the guide rail 7 , the side groove 8 cooperates to make the third screw 19 more firmly contact the guide rail 7 , thereby making the adjusted position of the movable frame 9 more firmly fixed.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A simply supported beam impact testing machine for plastics, characterized by: The invention comprises a base plate (1), a clamping member for clamping the plastic to be tested is installed on the top of the base plate (1), and a guide rail (7) is vertically fixedly connected to the top of the base plate (1), a movable moving frame (9) is slidably connected to the guide rail (7) along its own length direction, a third screw (19) is screwed on one side of the moving frame (9), and a top plate (11) is fixedly connected to the side of the moving frame (9) adjacent to the third screw (19), the free end of the third screw (19) extends to the inside of the moving frame (9) to contact the guide rail (7), and an impact member for impacting the plastic to be tested is installed on the top plate (11).

2. A simply supported beam impact testing machine for plastics according to claim 1, characterized in that: The impact member comprises a pendulum (16), the bottom of the top plate (11) is fixedly connected to a connecting frame (6), the interior of the connecting frame (6) is rotatably connected to a roller (10), one side of the roller (10) is fixedly connected to a connecting rope (13), and the free end of the connecting rope (13) is fixedly connected to the pendulum (16).

3. The simply supported beam impact testing machine for plastics according to claim 1, characterized in that: The impact member includes a pendulum (16), a connecting frame (6) is fixedly connected to the bottom of the top plate (11), a roller (10) is rotatably connected to the inside of the connecting frame (6), a connecting rope (13) is fixedly connected to one side of the roller (10), a through-hole (12) is provided on the top plate (11), and a first screw (15) is screwed and connected to one side of the top plate (11), the free end of the connecting rope (13) passes through the through-hole (12) from the bottom of the top plate (11), the free end of the first screw (15) extends to the inside of the through-hole (12) and contacts the connecting rope (13), a connecting ring (17) is sleeved on the connecting rope (13), one side of the connecting ring (17) is fixedly connected to the pendulum (16), and the other side is screwed and connected to the second screw (18), the free end of the second screw (18) extends to the inside of the connecting ring (17) and contacts the connecting rope (13).

4. The simply supported beam impact testing machine for plastics according to claim 3, characterized in that: The free end of the connecting rope (13) is fixedly connected to a pull ring (14), and a pull hole is provided on the pull ring (14).

5. The simply supported beam impact testing machine for plastics according to claim 1, characterized in that: The clamping member comprises two support plates (3), both of the support plates (3) are fixedly connected to the top of the base plate (1), and the opposite sides of the two support plates (3) are fixedly connected to electric push rods (5), the telescopic ends of the two electric push rods (5) are connected to clamping plates (4), and the bottom of the base plate (1) is fixedly connected to a foot (2).

6. The simply supported beam impact testing machine for plastics according to claim 1, characterized in that: One side of the guide rail (7) facing the third screw rod (19) is recessed along its own length direction to form a side groove (8).

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