Cantilever beam impact testing machine for plastic strength detection

Abstract

The utility model relates to the technical field of cantilever beam impact testing machines, in particular to a cantilever beam impact testing machine for plastic strength detection. In order to solve the problems that a fractured test piece is easy to rebound, the safety performance is low, the safety of operators beside is not facilitated, and the service life of an impact testing machine is shortened due to the fact that a fractured material flying out damages the impact testing machine. In order to prevent the broken test piece from rebounding to damage the testing machine, a vertically arranged buffer strip is mounted on a fixing plate above a mounting plate, the hard broken test piece is buffered and intercepted by the buffer strip after flying out, and the buffer strip is soft and has certain looseness, so that the broken test piece can be well intercepted and falls into a collecting tank, and the test efficiency is improved. The device is simple in structure, can well protect the safety of an operator, prevents a broken test piece from rebounding to damage equipment, prolongs the service life of the equipment, is matched with a limiting assembly, achieves an effect of fixing the collecting tank, and is good in firmness.

Description

Technical Field

[0001] This utility model relates to the technical field of cantilever beam impact testing machines, and in particular to a cantilever beam impact testing machine for testing the strength of plastics. Background Technology

[0002] The cantilever beam impact testing machine is a device used to determine the impact toughness of non-metallic materials. It is one of the most widely used impact testing machines on the market, primarily used to determine the impact toughness of non-metallic materials such as rigid plastics, reinforced nylon, fiberglass, ceramics, cast stone, and electrical insulation materials. It is an ideal testing device for the chemical industry, research institutions, and other departments. During operation, the object to be tested is clamped and fixed by a fixing assembly, and then impacted by a deflecting cantilever beam to achieve the impact test objective.

[0003] Chinese utility model patent application number CN201821311628.3 discloses an automatically resetting cantilever beam impact testing machine, including a support base, a side frame, a cantilever, a pendulum, a sample clamp, and a control console. The side frame is vertically fixed to the support base. One end of the cantilever is axially connected to the side frame, and the other end is connected to the pendulum. The automatically resetting cantilever beam impact testing machine also includes a resetting mechanism, which includes a driving device, a first transmission device disposed on the cantilever, and a second transmission device disposed on the side frame. The second transmission device can be detachably contacted with the first transmission device and can drive the first transmission device to move under the drive of the driving device, so that the pendulum is reset.

[0004] However, the above-mentioned cantilever beam impact testing machine has some shortcomings in use. When impacted by the pendulum, the broken specimen is prone to flying out at high speed along the pendulum's swing trajectory, which is not conducive to the safety of the operators nearby. When encountering a harder broken specimen, it is easy to bounce back, resulting in low safety performance. Furthermore, the flying broken material can damage the impact testing machine and reduce its service life. Utility Model Content

[0005] (1) Technical problems to be solved

[0006] To address the issues of fractured specimens easily rebounding, resulting in low safety performance, which is detrimental to the safety of nearby operators, and the damage that the ejected fractured material can cause to the impact testing machine, thus reducing its service life.

[0007] (2) Technical solution

[0008] The technical solution of this utility model is as follows: a cantilever beam impact testing machine for testing the strength of plastics, comprising a base and a cantilever beam impact testing machine body mounted on the surface of the base, including a control computer, protective components, limiting components, and a clamping mechanism. The control computer is mounted on one side of the support frame of the cantilever beam impact testing machine body. The clamping mechanism is mounted on the surface of the base plate of the cantilever beam impact testing machine body. A protective component is mounted on one side of the base surface of the cantilever beam impact testing machine body. The protective component contains a limiting component. By setting the protective component, damage to the testing machine caused by the rebound of the fractured specimen is prevented. An mounting plate is also provided on the cantilever beam impact testing machine body. A vertically installed buffer band is mounted on the fixed plate above the mounting plate. Harder fractured specimens are buffered and intercepted by the buffer band. Because the buffer band is relatively soft and has a certain degree of slack, it effectively intercepts the fractured specimens, causing them to fall into the collection tank for unified processing. The structure is simple, effectively protecting the safety of operators and preventing fractured specimens from rebounding and damaging the equipment, thus extending the equipment's lifespan. In conjunction with the limiting component, positioning blocks installed inside the collection tank, under the pressure of springs and the limiting plate, abut against the surfaces of the mounting plate and baffle, effectively fixing the collection tank in place. This provides good stability and convenient extraction.

[0009] Furthermore, the protective components include a mounting plate, a baffle, a collection trough, a handle, a fixing plate, and a buffer strip. A mounting plate is installed on one side of the base, adjacent to the main body of the cantilever beam impact testing machine. An L-shaped baffle is integrally formed on one side of the mounting plate. A fixing plate is installed above the mounting plate. Multiple buffer strips arranged in a straight line are installed on the bottom surface of the fixing plate. The buffer strips are positioned between the mounting plate and the baffle. The end of the buffer strip furthest from the fixing plate is connected to a U-shaped plate on the surface of the baffle. A collection trough is located between the mounting plate and the baffle, below the buffer strips. The collection trough slides on one side of the mounting plate to collect... The surface of the tank is equipped with a handle. By incorporating protective components to prevent damage to the testing machine from the rebound of fractured specimens, a mounting plate is installed on the main body of the cantilever beam impact testing machine. A vertically positioned buffer belt is installed on a fixed plate above the mounting plate. After a relatively hard fractured specimen flies out, it is buffered and intercepted by the buffer belt. Because the buffer belt is relatively soft and has a certain degree of slack, it can effectively intercept the fractured specimen and allow it to fall into the collection tank for unified processing. The structure is simple, effectively protects the safety of operators, prevents fractured specimens from rebounding and damaging the equipment, and extends the service life of the equipment.

[0010] Furthermore, the buffer zone is set in three layers arranged in an alternating manner. The buffer zone is made of a material with a certain drape, which can decelerate and buffer the fractured specimen, prevent the fractured specimen from rebounding, and improve the safety of the operation.

[0011] Furthermore, fixing blocks are installed on both sides of the mounting plate. A clamping block is set in a groove on one side surface of the fixing block. An adjusting bolt is inserted into a threaded hole on the surface of the fixing block. The adjusting bolt passes through one end of the fixing block and is rotatably connected to the clamping block. Movable slots adapted to the clamping blocks are opened on both sides of the base. The clamping blocks are engaged in the movable slots. The mounting plate slides on the surface of the base through the clamping blocks and the movable slots. By installing fixing blocks on both sides of the mounting plate, and rotating the adjusting bolt to drive the clamping block inside the fixing block to slide into the movable slot, the stability of the mounting plate on the base can be improved, and the position of the mounting plate can be easily adjusted. It is flexible and has good flexibility. Rotating the adjusting bolt again can make the clamping block abut against the movable slot, thereby fixing the position of the mounting plate. It is practical and easy to assemble and disassemble.

[0012] Furthermore, two sets of limiting blocks are symmetrically installed on the surface of the clamping block, and a limiting groove adapted to the limiting block is opened in the fixed block. By installing the limiting blocks on both sides of the clamping block, the limiting blocks are engaged in the limiting groove, which can limit the clamping block and improve the stability of the clamping block in the moving groove.

[0013] Furthermore, the limiting component includes positioning blocks, springs, and limiting plates. Positioning blocks are installed in the holes symmetrically opened on both sides of the collection groove. A limiting plate is installed on one side of the positioning block, and a spring is installed on one side of the limiting plate. The spring is located inside the hole in the collection groove, and the other end of the spring abuts against the hole in the collection groove. The limiting plate is adapted to the hole in the collection groove. By setting the limiting component and installing positioning blocks inside the collection groove, the positioning blocks on both sides of the collection groove abut against the surface of the mounting plate and the baffle under the compression of the spring and the limiting plate, which achieves the effect of fixing the collection groove, with good firmness and convenient extraction.

[0014] Furthermore, the surface of the baffle is provided with a positioning groove with an arc-shaped structure corresponding to the positioning block. The positioning block is set in a hemispherical structure. By setting the positioning block in a hemispherical structure, the collection tank can be easily installed between the baffle and the mounting plate, making it easy to remove and clean, with good performance and strong practicality.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: When in use, this design incorporates protective components to prevent damage to the testing machine from the rebound of fractured specimens. An installation plate is installed on the main body of the cantilever beam impact testing machine, and a vertically positioned buffer band is installed on a fixed plate above the installation plate. Harder fractured specimens are buffered and intercepted by the buffer band. Because the buffer band is relatively soft and has a certain degree of slack, it can effectively intercept the fractured specimens, which then fall into the collection tank for unified processing. The structure is simple, effectively protecting the safety of operators, preventing damage to the equipment from the rebound of fractured specimens, and improving the service life of the equipment. Furthermore, in conjunction with the limiting components, positioning blocks are installed inside the collection tank. Under the compression of springs and the limiting plate, the positioning blocks on both sides of the collection tank abut against the surfaces of the installation plate and the baffle, effectively fixing the collection tank. This provides good stability and convenient extraction. Attached Figure Description

[0017] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model.

[0018] Figure 2 The image shown is a left view of the overall structure of this utility model;

[0019] Figure 3 This utility model is shown. Figure 2 Enlarged view of the structure at point A in the middle;

[0020] Figure 4 The diagram shown is an exploded view of the protective component in this utility model.

[0021] Figure 5 The diagram shown is a structural diagram of the limiting component in this utility model;

[0022] Figure 6 The image shown is a right view of the overall structure of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1-base, 2-cantilever beam impact testing machine body, 3-control computer, 4-protective components, 41-mounting plate, 42-baffle, 43-fixing block, 44-adjusting bolt, 45-clamping block, 46-moving groove, 47-limiting block, 48-limiting groove, 49-collecting groove, 410-handle, 411-fixing plate, 412-buffer belt, 5-limiting component, 51-positioning block, 52-spring, 53-limiting plate, 6-clamping mechanism. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Example 1:

[0026] Please see Figure 1-6This utility model provides an embodiment: a cantilever beam impact testing machine for testing the strength of plastics, including a base 1 and a cantilever beam impact testing machine body 2 mounted on the surface of the base 1, including a control computer 3, a protective component 4, a limiting component 5, and a clamping mechanism 6. The control computer 3 is mounted on one side of the support of the cantilever beam impact testing machine body 2. The clamping mechanism 6 is mounted on the bottom plate surface of the cantilever beam impact testing machine body 2. The protective component 4 is mounted on one side of the surface of the base 1, and the limiting component 5 is provided inside the protective component 4. The protective component 4 includes a mounting plate 41, a baffle 42, a collection groove 49, a handle 410, a fixing plate 411, and a buffer strip 412. The mounting plate 41 is located on one side of the surface of the base 1, and an L-shaped baffle 42 is integrally formed on one side of the mounting plate 41. The fixing plate 411 is mounted above the mounting plate 41, and multiple buffer strips 412 arranged in a straight line are mounted on the bottom surface of the fixing plate 411. 12. A buffer band 412 is positioned between the mounting plate 41 and the baffle 42. One end of the buffer band 412 away from the fixed plate 411 is connected to a U-shaped plate on the surface of the baffle 42. A collection trough 49 is provided below the buffer band 412 between the mounting plate 41 and the baffle 42. The collection trough 49 slides on one side of the mounting plate 41. A handle 410 is installed on the surface of the collection trough 49. By setting up a protective component 4, in order to prevent the fractured specimen from rebounding and damaging the testing machine, a mounting plate 41 is set on the main body 2 of the cantilever beam impact testing machine. A vertically set buffer band 412 is installed on the fixed plate 411 above the mounting plate 41. After the harder fractured specimen flies out, it is buffered and intercepted by the buffer band 412. Because the buffer band 412 is relatively soft and has a certain degree of slack, it can effectively intercept the fractured specimen and let it fall into the collection trough 49 for unified treatment. The structure is simple and can effectively protect the safety of the operator, prevent the fractured specimen from rebounding and damaging the equipment, and improve the service life of the equipment.

[0027] The buffer strip 412 is set in three layers arranged in an alternating manner. The buffer strip 412 is made of a material with a certain drape, which can decelerate and buffer the fractured specimen, prevent the fractured specimen from rebounding, and improve the safety of operation.

[0028] Fixing blocks 43 are installed on both sides of the mounting plate 41. A clamping block 45 is provided in a groove on one side surface of the fixing block 43. An adjusting bolt 44 is inserted into a threaded hole on the surface of the fixing block 43. The adjusting bolt 44 passes through one end of the fixing block 43 and is rotatably connected to the clamping block 45. Movable slots 46 adapted to the clamping blocks 45 are provided on both sides of the base 1. The clamping blocks 45 are engaged in the movable slots 46. The mounting plate 41 slides on the surface of the base 1 through the clamping blocks 45 and the movable slots 46. By installing fixing blocks 43 on both sides of the mounting plate 41, and by rotating the adjusting bolt 44, the clamping blocks 45 inside the fixing blocks 43 can be slid into the movable slots 46, which can improve the stability of the mounting plate 41 on the base 1 and facilitate the adjustment of the position of the mounting plate 41. It is flexible and easy to adjust. Rotating the adjusting bolt 44 again can make the clamping blocks 45 abut against the movable slots 46, thereby fixing the position of the mounting plate 41. It is practical and easy to assemble and disassemble.

[0029] Two sets of limiting blocks 47 are symmetrically installed on the surface of the clamping block 45. The fixing block 43 has a limiting groove 48 that matches the limiting block 47. By installing the limiting blocks 47 on both sides of the clamping block 45, the limiting blocks 47 are engaged in the limiting groove 48, which can limit the clamping block 45 and improve the stability of the clamping block 45 in the moving groove 46.

[0030] Example 2:

[0031] Please see Figure 1-6 In this embodiment, the limiting component 5 includes a positioning block 51, a spring 52, and a limiting plate 53. Positioning blocks 51 are installed in the symmetrically opened holes on both sides of the collecting groove 49. A limiting plate 53 is installed on one side of the positioning block 51, and a spring 52 is installed on one side of the limiting plate 53. The spring 52 is located inside the opening in the collecting groove 49, and the other end of the spring 52 abuts against the opening in the collecting groove 49. The limiting plate 53 is adapted to the opening in the collecting groove 49. By setting the limiting component 5 and installing the positioning blocks 51 inside the collecting groove 49, the positioning blocks 51 on both sides of the collecting groove 49 abut against the surfaces of the mounting plate 41 and the baffle 42 under the pressure of the spring 52 and the limiting plate 53, thus fixing the collecting groove 49. This provides good stability and convenient extraction.

[0032] The surface of the baffle 42 is provided with a positioning groove with an arc-shaped structure corresponding to the positioning block 51. The positioning block 51 is set in a hemispherical structure. By setting the positioning block 51 in a hemispherical structure, the collection tank 49 can be easily installed between the baffle 42 and the mounting plate 41. It is easy to remove and clean, has a good effect, and is highly practical.

[0033] Through the above steps, during use, by setting up protective component 4, to prevent the fractured specimen from rebounding and damaging the testing machine, a mounting plate 41 is set on the main body 2 of the cantilever beam impact testing machine. A vertically arranged buffer belt 412 is installed on the fixed plate 411 above the mounting plate 41. After a harder fractured specimen flies out, it is buffered and intercepted by the buffer belt 412. Because the buffer belt 412 is relatively soft and has a certain degree of slack, it can effectively intercept the fractured specimen, which falls into the collection tank 49 for unified processing. The structure is simple and can effectively protect the safety of operators, prevent the fractured specimen from rebounding and damaging the equipment, and improve the service life of the equipment. This is achieved by rotating the adjusting screw. Bolt 44 drives the clamping block 45 inside the fixing block 43 to slide into the moving groove 46, which can improve the stability of the mounting plate 41 on the base 1 and facilitate the adjustment of the position of the mounting plate 41. It has good flexibility. Rotating the adjusting bolt 44 again can make the clamping block 45 abut against the moving groove 46, thereby fixing the position of the mounting plate 41. It is practical, easy to disassemble and assemble. In conjunction with the limiting component 5, by installing the positioning block 51 inside the collection groove 49, under the compression of the spring 52 and the limiting plate 53, the positioning blocks 51 on both sides of the collection groove 49 abut against the surface of the mounting plate 41 and the baffle 42, which can fix the collection groove 49. It has good firmness and is easy to remove.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A cantilever beam impact testing machine for testing the strength of plastics, comprising a base (1) and a cantilever beam impact testing machine body (2) mounted on the surface of the base (1), characterized in that: The machine includes a control computer (3), a protective component (4), a limiting component (5), and a clamping mechanism (6). The control computer (3) is installed on one side of the support of the cantilever beam impact testing machine body (2). The clamping mechanism (6) is installed on the surface of the bottom plate of the cantilever beam impact testing machine body (2). The protective component (4) is installed on the surface of the base (1) on one side of the cantilever beam impact testing machine body (2). The limiting component (5) is provided inside the protective component (4).

2. The cantilever beam impact testing machine for testing the strength of plastics according to claim 1, characterized in that: The protective assembly (4) includes a mounting plate (41), a baffle (42), a collection trough (49), a handle (410), a fixing plate (411), and a buffer belt (412). The mounting plate (41) is located on one side of the cantilever beam impact testing machine body (2) on the surface of the base (1). An L-shaped baffle (42) is integrally formed on one side of the mounting plate (41). A fixing plate (411) is installed above the mounting plate (41). A series of components are installed on the bottom surface of the fixing plate (411). A buffer strip (412) is arranged in a straight line. The buffer strip (412) is positioned between the mounting plate (41) and the baffle (42). One end of the buffer strip (412) away from the fixed plate (411) is connected to a U-shaped plate on the surface of the baffle (42). A collection groove (49) is provided between the mounting plate (41) and the baffle (42) below the buffer strip (412). The collection groove (49) slides on one side of the mounting plate (41). A handle (410) is installed on the surface of the collection groove (49).

3. The cantilever beam impact testing machine for testing the strength of plastics according to claim 2, characterized in that: The buffer strip (412) is arranged in three layers in an alternating manner, and the buffer strip (412) is made of a material with a certain drape.

4. A cantilever beam impact testing machine for testing the strength of plastics according to claim 2, characterized in that: Fixing blocks (43) are installed on both sides of the mounting plate (41). A clamping block (45) is provided in a groove on one side surface of the fixing block (43). An adjusting bolt (44) is inserted into a threaded hole on the surface of the fixing block (43). The adjusting bolt (44) passes through one end of the fixing block (43) and is rotatably connected to the clamping block (45). Movable grooves (46) adapted to the clamping block (45) are provided on both sides of the base (1). The clamping block (45) is engaged in the movable groove (46). The mounting plate (41) slides on the surface of the base (1) through the clamping block (45) and the movable groove (46).

5. A cantilever beam impact testing machine for testing the strength of plastics according to claim 4, characterized in that: Two sets of limiting blocks (47) are symmetrically installed on the surface of the clamping block (45), and a limiting groove (48) adapted to the limiting block (47) is opened in the fixing block (43).

6. A cantilever beam impact testing machine for testing the strength of plastics according to claim 2, characterized in that: The limiting component (5) includes a positioning block (51), a spring (52) and a limiting plate (53). The positioning block (51) is provided in the holes symmetrically opened on both sides of the collecting groove (49). The limiting plate (53) is installed on one side of the positioning block (51), and the spring (52) is provided on one side of the limiting plate (53). The spring (52) is located inside the hole opened in the collecting groove (49), and the other end of the spring (52) abuts against the hole opened in the collecting groove (49). The limiting plate (53) is adapted to the hole opened in the collecting groove (49).

7. A cantilever beam impact testing machine for testing the strength of plastics according to claim 2, characterized in that: The surface of the baffle (42) is provided with a positioning groove with an arc-shaped structure corresponding to the positioning block (51), and the positioning block (51) is provided with a hemispherical structure.

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