CN215574244U - Mechanical property testing system - Google Patents

Abstract

Mechanical properties test system, including many mechanical properties test equipment and the feed machine of feeding for these mechanical properties test equipment, a feed machine corresponds many mechanical properties test equipment, is equipped with the material transporting device, specifically: the mechanical property testing equipment comprises a pressure testing machine and a tensile testing machine; the material feeder feeds out a tested material, the material conveying device takes the tested material fed out by the material feeder away and conveys the tested material to the pressure testing machine, and the pressure testing machine presses the tested material; the material conveying device takes the tested material supplied by the material supply machine to the mechanical property testing equipment and sends the material to the tensile testing machine, and the tensile testing machine stretches the tested material. Only one feeder is needed to feed the pressure tester and the tensile tester respectively, and two feeders are not needed to be configured, so that the initial investment of building a factory building can be reduced.

Description

Mechanical property testing system

Technical Field

The utility model relates to a mechanical property testing system, which is mainly used for testing mechanical properties of a tested material such as pressing, stretching and the like.

Background

There are pressure testers and tensile testers in the prior art, each of which requires the provision of a feeder. Therefore, one pressure tester, one tensile tester and two feeders are required for the pressure test and the material tensile test, which results in large initial investment in building a factory.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a mechanical property testing system, and two feeding machines do not need to be respectively configured for a pressure testing machine and a tensile testing machine, so that the initial investment for building a workshop is reduced.

Mechanical properties test system, including many mechanical properties test equipment and the feed machine of feeding for these mechanical properties test equipment, a feed machine corresponds many mechanical properties test equipment, is equipped with the material transporting device, specifically: the mechanical property testing equipment comprises a pressure testing machine and a tensile testing machine; the material feeder feeds out a tested material, the material conveying device takes the tested material fed out by the material feeder away and conveys the tested material to the pressure testing machine, and the pressure testing machine presses the tested material; the material conveying device takes the tested material supplied by the material supply machine to the mechanical property testing equipment and sends the material to the tensile testing machine, and the tensile testing machine stretches the tested material.

Furthermore, the tensile test machine comprises an upper tensile clamp, a lower tensile clamp and a material returning mechanism, the upper tensile clamp and the lower tensile clamp respectively clamp the upper end and the lower end of a long-strip-shaped tested material, the vertical long-strip-shaped tested material is stretched for testing, the long-strip-shaped tested material is loosened after the test is completed so as to return the material, the material returning mechanism comprises a material returning push rod, and the material returning push rod transversely extends into a crack of the lower tensile clamp so as to push the crushed materials out of the crack.

Furthermore, the material returning mechanism comprises an upper material returning clamp and a lower material returning clamp which respectively clamp away the upper part and the lower part of the tested strip-shaped tested material to realize material returning.

Furthermore, the upper material returning clamp and the lower material returning clamp and the material returning push rod are positioned on the same side of the long-strip-shaped tested material.

The pressure testing machine comprises a material supporting mechanism, two material supporting parts and a material pressing part, wherein the left side and the right side of the material supporting mechanism respectively extend upwards to support the left end and the right end of a long-strip-shaped tested material, a space is reserved between the two material supporting parts to enable the middle of the long-strip-shaped tested material to be suspended, the material pressing part presses the middle of the long-strip-shaped tested material to be subjected to pressure testing, a material returning operation part and an inclined material returning channel are arranged, and the material returning operation part operates the tested long-strip-shaped tested material to be separated from the material supporting parts, and then the tested material falls into the material returning channel and slides downwards along the inclined material returning channel to be subjected to blanking.

Furthermore, a material returning channel plate for forming the material returning channel is arranged; the rear part of the material returning channel plate is used as the material returning operation part, and particularly, the elongated tested material is pushed forwards to be separated from the material supporting part and then falls into the material returning channel, and in the state, the material returning channel plate forms a material returning channel which is inclined to the rear and high and low, so that the elongated tested material slides downwards and falls off.

Furthermore, the rear part of the material returning channel plate extends backwards to pass through the space between the two material supporting parts and cross the strip-shaped tested material, the material returning channel plate rotates around a transverse axis positioned in the middle of the material returning channel plate, the rotating direction is that the front part rotates downwards and the rear part rotates upwards, and therefore the rear part of the material returning channel plate is provided with a system which moves forwards and upwards to stir the middle part of the strip-shaped tested material, so that the strip-shaped tested material moves forwards and upwards to be separated from the material supporting parts and then falls into the material returning channel.

Further, the middle part of the material returning channel plate is hinged on the material supporting mechanism so as to form the transverse axis at the hinged position.

Furthermore, the top parts of the two material supporting parts are recessed to form supporting parts at the adjacent parts of the left blank part between the two material supporting parts, a limiting wall is formed in front of the supporting parts, and the two supporting parts respectively support the left end and the right end of the long strip-shaped tested material.

Has the advantages that: only one feeder is needed to feed the pressure tester and the tensile tester respectively, and two feeders are not needed to be configured, so that the initial investment of building a factory building can be reduced.

Drawings

FIG. 1 is a top view of a mechanical property testing system;

FIG. 2 is a perspective view of the mechanical property testing system (with two pressure testers and one tensile tester hidden);

FIG. 3 is a perspective view of the transfer arm moving to the feeder for material removal;

FIG. 4 is an overall view of the discharge motor discharging the material bin;

FIG. 5 is a partial view of the outfeed motor discharging the material bin;

FIG. 6 is a perspective view of the material conveying arm moving to the code scanner to scan the material;

FIG. 7 is a perspective view of the material transport arm after the material to be tested is scanned by the scanner, and the material transport arm is transferred to the pressure tester to lay down the material to be tested (only the upper and lower gripping fingers of the material transport arm are shown in this figure and FIG. 8);

FIG. 8 is a perspective view of the material handling arm pushing the material under test until it is moved into position after lowering the material under test;

FIG. 9 is a perspective view of the press tester pressing down on the material under test;

FIG. 10 is a perspective view of a material return channel plate returning the tested material on the pressure tester;

FIG. 11 is a perspective view of the material handling arm being rotated to the tensile testing machine to lower the material under test;

FIG. 12 is a perspective view of a tensile testing machine drawing a material under test;

FIG. 13 is a perspective view of a tensile tester pulling the material under test in two sections;

FIG. 14 is a partial view of the upper and lower material returning clamps of the tensile testing machine gripping two pieces of material to be tested;

fig. 15 is a partial view of the material return ram extending into the nip of the lower material return fixture to push the scrap away onto the scrap staging table.

In the figure: 1. a material conveying arm; 2. a feeding machine; 3. a code scanning machine; 4. a pressure testing machine; 5. a tensile testing machine; 21. a material bin; 22. a discharging motor; 220. a material pushing plate; 23. front and rear transverse discharge channels; 24. a material under test; 25. a receiving platform; 26. a sensing member; 27. a material receiving position; 28. a vertical material blocking plate; 29. a material taking notch; 41. a material pressing lifting platform; 410. pressing end heads; 42. A material supporting block; 420. a vacant place is reserved; 43. a material returning channel plate; 44. a material returning cylinder; 45. a pressure test waste recovery tank; 46. a limiting wall; 47. short steps; 48. a rear portion; 49. a first lifting module; 50. an upper stretching clamp; 51. drawing the clamp downwards; 52. Feeding a material returning clamp; 53. a feeding and returning motor; 54. a material returning clamp is arranged; 55. a material discharging motor; 56. a material returning push rod; 57. a push rod cylinder; 58. a tensile test waste recovery tank; 59. performing crack filling; 60. a crushed material temporary placing table; 61. a second lifting module.

Detailed Description

The utility model is described in further detail below with reference to specific embodiments.

The mechanical property testing system provided by the utility model is used for testing the compression resistance and the tensile resistance of the tested material. As shown in fig. 1 and 2, the mechanical property testing system includes a controller (hereinafter, the working processes are controlled by the controller), a material conveying arm 1, three pressure testers 4, two tensile testers 5, and a material supply machine 2. A plurality of materials to be tested are mixed in the feeder 2, and each material to be tested is subjected to a compression resistance test or a tensile resistance test. In order to distinguish the types of the materials to be tested from the tests to be performed, the materials to be tested are printed with two-dimensional codes recording material type information and test information before being put into the feeder 2, and the two-dimensional codes are used as information marks. The three pressure testers 4, the two tensile testers 5 and the one feeding machine 2 are distributed on the same circumference with the material conveying arm 1 as the center of a circle, and the code scanning machine 3 is arranged on the feeding machine 2. As shown in fig. 3, the transport arm 1 is rotated to the feeder 2 to take out a measured material; then, the scanner 3 is rotated to the scanner 3, and the scanner 3 reads the information of the two-dimensional code of the material to be measured as an information reading means, and becomes a state shown in fig. 6. The controller sends a test instruction to the material conveying arm 1 according to the information of the two-dimensional code, and the material conveying arm 1 rotates according to the test instruction so as to correspondingly convey the tested material to the pressure testing machine 4 or the tensile testing machine 5 for testing, for example: the code scanner 3 scans the two-dimensional code of the first tested material 24 to know that the first tested material 24 needs to be subjected to pressure test, and the material conveying arm 1 conveys the first tested material to the pressure test machine 4 for pressure test; the code scanner 3 scans the two-dimensional code of the second tested material 24 to know that the second tested material needs to be subjected to the tensile test, and the material conveying arm 1 conveys the second tested material to the tensile test machine 5 for the tensile test.

As shown in fig. 3, this paragraph details how the material handling arm 1 removes the material being tested from the feeder 2. The feeder 2 is provided with five material bins 21 (only three of which are shown in fig. 3), behind each of which there is correspondingly a discharge motor 22. As shown in fig. 4 to 5, taking one of the material bins 21 and the corresponding discharging motor 22 at the back thereof as an example, the inner cavity of the material bin 21 has a plurality of strip-shaped materials 24 to be tested, which are horizontally stacked, and two ends of the materials 24 to be tested are respectively located at the left and right sides of the inner cavity of the material bin. The material bin 21 front side bulkhead bottom has seted up the discharge gate and the operation mouth has been seted up to back storehouse lateral wall bottom, and operation mouth, material bin 21 inner chamber, discharge gate three form a horizontal discharging channel 23 around jointly, and the height of operation mouth and the thickness looks adaptation of single measured material 24. The front end of the discharging motor 22 is provided with a material pushing plate 220, the discharging motor 22 and the corresponding material pushing plate 220 are used as material pushing devices together, the discharging motor 22 drives the material pushing plate 220 to extend into the material bin 21 through the operation opening, and the tested material 24 located at the bottom layer of the inner cavity of the material bin 21 (the bottom layer of the inner cavity is a discharging position) is pushed out forwards until the tested material 24 is pushed out through the discharging opening. In order to receive a tested material 24 pushed out from the material bin 21, a material receiving table 25 is arranged right in front of the material bin 21, the left part and the right part of the top surface of the material receiving table 25 are respectively partially recessed to form a left material receiving position 27 and a right material receiving position 27, and a vertical baffle plate 28 is respectively arranged in front of the two material receiving positions 27 to serve as limiting parts; a material taking gap 29 is formed between the two material receiving positions 27, and the two material receiving positions 27 are respectively provided with a sensing piece 26 which senses whether the material 24 to be measured is supported on the material receiving positions 27. The material pushing plate 220 pushes out a tested material 24 located at the bottom layer (discharging position) of the inner cavity of the material bin 21 to the material receiving platform 25 until the tested material is blocked by the vertical material blocking plate 28, in this state, the two material receiving positions 27 support the left end and the right end of the tested material 24, so that the middle part of the tested material 24 is suspended at the material taking gap 29, and a plurality of tested materials originally above the tested material 24 in the material bin 21 are supported by the material pushing plate 220. When the sensing member 26 senses that the material 24 is already in place, the discharging motor 22 drives the material pushing plate 220 to retract and reset, so that the material 24 held by the material pushing plate 220 automatically falls to the discharging position. In this state, the feeding machine 2 has fed out a tested material 24, the conveying arm 1 rotates until two clamping fingers of the conveying arm align with the material taking notch 29 one above the other, the conveying arm 1 drives the clamping fingers to move to the material taking notch 29 between the two material receiving positions 27 to clamp the middle part of the tested material 24 and convey the tested material 24 to the code scanner 3, the code scanner 3 reads two-dimensional code information of the tested material 24, and the conveying arm 1 conveys the tested material 24 to the pressure testing machine 4 or the tension testing machine 5 according to the two-dimensional code information. When the sensor 26 senses that the material 24 has been removed, the mechanical property testing system repeats the above-described operation to perform a pressure test on the next material to be tested.

As shown in fig. 8, this paragraph details the case where the material to be tested 24 is sent to the pressure testing machine 4 by the material transport arm 1 for pressure testing. The pressure testing machine 4 comprises a material supporting mechanism, wherein two material supporting blocks 42 respectively extend upwards from the left side and the right side of the material supporting mechanism, a hollow part 420 is formed by reserving the middle part, the tops of the two material supporting blocks 42 are respectively partially recessed to form two short steps 47 serving as supporting parts, and the inner side wall of the short step 47 close to the front is a limiting wall 46 serving as a limiting stopper. The material transporting arm 1 which is used as a material transporting clamp and a material transporting device comprises an upper clamping finger and a lower clamping finger, the upper clamping finger and the lower clamping finger are used for clamping the middle part of the elongated tested material 24, the two ends of the elongated tested material 24 are clamped to be respectively supported on two short steps 47, and in the state, the lower clamping finger is positioned at a gap 420 between the two material supporting parts 42. Then, the material transport arm 1 releases the measured material 24, and the middle portion of the measured material 24 is suspended. The gripping fingers of the transport arm 1 then act as a position correction mechanism to advance the material 24 under test on the two short steps 47 until the material 24 is stopped by the stop wall 46 of the short step 47, at which point the material 24 under test is ready for a pressure test to be performed and the transport arm 1 leaves the pressure tester 4 ready to remove the next material 24 under test. Alternatively, a push block may be provided behind the hollow 420 in the middle of the material holding mechanism, and the push block serves as a position correction mechanism to push the material 24 forward until the material 24 is stopped by the stopper wall 46 of the short step 47.

In the previous paragraph, the material 24 under test is ready, and this paragraph illustrates the pressure test that is to be performed. As shown in fig. 7 and 9, the pressure testing machine 4 is provided with a first lifting module 49 and a material pressing lifting table 41, the material pressing lifting table 41 is mounted on the first lifting module 49 so as to be capable of lifting, and a material pressing tip 410 aligned with the middle of the material 24 to be tested is provided at the lower part of the material pressing lifting table 41. The pressure testing machine 4 is provided with a material returning cylinder 44, a pressure test waste recovery box 45 and a material returning channel plate 43, the material returning channel plate 43 normally lies horizontally, the middle part of the material returning channel plate is hinged on the material supporting mechanism, so that a transverse axis is formed at the hinged part, the material returning channel plate 43 extends backwards through the two material supporting parts 42 to cross the long strip-shaped tested material 24, the material returning cylinder 44 can drive the material returning channel plate 43 to rotate around the transverse axis, and the rotation direction is that the front part rotates downwards and the rear part 48 rotates upwards. A pressure test waste recycling box 45 is arranged in front of the material returning channel plate 43. The working process of the pressure testing machine 4 is as follows: the swaging lifter 41 moves down together with the swaging tip 410 so that the swaging tip 410 as a swaging part presses down the middle part of the tested material 24 to perform a pressure test, that is, the state of fig. 7 is changed into the state of fig. 9. The pressure testing machine 4 is provided with a first detector (not shown) for detecting whether the tested material 24 is broken or not, and the first detector feeds the detection result back to the controller for recording, but the same material returning process is carried out no matter whether the tested material 24 is broken or not. During material returning, the material pressing lifting platform 41 and the material pressing end 410 move upwards to reset, the material returning cylinder 44 serves as a material returning driving device to drive the material returning channel plate 43 to rotate to form a material returning channel (as shown in fig. 10) with a rear high and a front low inclined, in the process, the rear part 48 of the material returning channel plate serves as a material pushing operation part to push the strip-shaped tested material forwards and upwards, so that the tested material rises to be separated from the material supporting part 42 and moves forwards, and then falls into the material returning channel, and the tested material 24 slides downwards along the inclined material returning channel to fall into the pressure test waste recycling box 45. The material return cylinder 44 then causes the material return channel plate 43 to reset and the pressure testing machine 4 is ready to test the next material 24 under test.

Preferably, the material returning channel plate 43 may be fixed on the material supporting mechanism and inclined to form a material returning channel, a push rod is arranged behind the empty part 420 of the material supporting mechanism as a material returning operation member, and the material returning operation member pushes the tested material 24 forward to separate from the material supporting part 42 and then fall into the material returning channel 43 and slide down along the inclined material returning channel 43 to drop the material.

As shown in fig. 11, this paragraph details the case where the material transport arm 1 sends the material to be tested 24 to the tensile testing machine 5 for tensile testing. The second lifting module 61, the upper stretching clamp 50 and the lower stretching clamp 51 are arranged on the stretching testing machine 5, the material conveying arm 1 clamps the tested material 24 from left to right and vertically conveys the tested material to the lower stretching clamp 51, the lower stretching clamp 51 clamps the lower end of the tested material 24, and then the material conveying arm 1 leaves the stretching testing machine 5 to prepare for taking the next tested material 24 for the next test. The upper stretching clamps 50 are located directly above the lower stretching clamps 51 and the upper stretching clamps 50 are mounted on the second lifting module 61 so as to be able to move down to clamp the upper end of the material under test 24, as shown in figure 12. The upper stretching clamp 50 is hinged with an upper material returning clamp 52, and the upper material returning clamp 52 is provided with an upper material returning motor 53. The lower stretching clamp 51 is hinged with a lower material returning clamp 54, and a lower material returning motor 55 is matched with the lower material returning clamp 54. The material returning push rod 56 and the push rod cylinder 57 for driving the material returning push rod 56 are further arranged, the material returning push rod 56 and the upper and lower material returning clamps 52 and 54 are jointly used as a material returning mechanism, and the three are located on the front side of the tested material 24. A tensile test waste recycling box 58 is arranged in front of the tensile tester 5. The tensile tester 5 works as follows: after the upper and lower stretching clamps clamp the tested material 24 together, the upper stretching clamp 50 moves upwards to stretch the tested material 24, a second detector (not shown) is arranged to detect whether the tested material 24 is broken, and then the second detector feeds the detection result back to the controller for recording, but the same material returning process is carried out no matter whether the tested material 24 is broken or not. As shown in fig. 13, the most complex fracture situation is: the material 24 to be measured is pulled apart into two pieces and the crushed pieces are contained in the slit 59 of the lower stretching jig 51. The material return is started, and the upper and lower material returning jigs 52 and 54 are normally located at the standby positions to avoid the upper and lower stretching jigs 50 and 51. First, the upper material returning motor 53 drives the upper material returning jig 52 to rotate downward away from the standby position, and clamps the upper portion of the material 24 to be measured, and the upper stretching jig 50 releases the upper end of the material 24 to be measured; then, the lower material returning motor 55 drives the lower material returning jig 54 to rotate upward away from the standby position, and clamps the lower portion of the material 24 to be tested, the lower stretching jig 51 releases the lower end of the material 24 to be tested, and the upper and lower material returning jigs 52 and 54 clamp and throw away two pieces of the material 24 to be tested into the tensile test waste recycling bin 58, as shown in fig. 14. Next, as shown in fig. 15 (the upper and lower material returning jigs 52 and 54 do not discard the material 24 to be measured in fig. 15, but actually discard the material 24 to be measured), a material crushing rest 60 is provided behind the tensile testing machine 5, and the material returning push rod 56 is driven by the push rod cylinder 57 to extend into the slit 59 of the lower tensile jig 51 until the crushed material in the slit 59 is pushed out onto the material crushing rest 60. Next, the material return push rod 56 and the upper and lower material return clamps are reset and the tensile testing machine 5 is ready to test the next material 24 under test. The crushed aggregates on the crushed aggregate temporary placing table 60 are removed by the operator when the crushed aggregates are accumulated to a certain extent.

In addition to the case where the material 24 to be measured is broken into two pieces and the crushed material is contained in the nip 59 of the lower stretching jig 51, the following two cases may occur: in the first case, the tested material 24 is broken into two parts, and the crack 59 of the lower stretching clamp 51 has no crushed material, so that the material returning can be completed by the upper and lower material returning clamps, and the material returning push rod 56 is only pushed empty in this case; in the second case, the tested material 24 is not broken, so that the crack 59 of the lower stretching clamp 51 has no crushed material, the material returning can be completed by the upper material returning clamp 52, the lower material returning clamp 54 is only empty clamped, and the material returning push rod 56 is only empty pushed. Alternatively, the lower material returning motor 55 and the lower material returning jig 54 may be omitted, and the material under test 24 clamped by the lower stretching jig 51 may be pushed out onto the material table 60 together with the crushed materials in the nip 59 by the material returning push rod 56, so that the material under test 24 in which the above-mentioned three kinds of breakage occur may be returned.

It should be noted that the above mechanical property testing system is configured with only the pressure testing machine 4 and the tensile testing machine 5 as mechanical property testing devices, but actually, a torsion resistance testing device may be configured to test the torsion resistance of the material under test 24. Still further, it is even possible to configure the heat test apparatus to test the heat resistance of the material under test 24, configure the corrosion test apparatus to test the corrosion resistance of the material under test 24, and configure other material performance test equipment to test different aspects of the performance of the material; the material conveying arm 1, the material supply machine 2, the code scanning machine 3, the pressure testing machine 4, the tensile testing machine 5, the heated testing device and/or the corrosion testing device form a material performance testing system together. It should be noted that in the material property testing system according to the non-preferred embodiment, the specific material property testing equipment can be replaced as required, but it falls within the scope of the non-preferred embodiment as long as one of the equipment is a pressure testing machine and/or the other equipment is a tensile testing machine.

The above description is only the embodiments of the present invention, and the scope of protection is not limited thereto. The insubstantial changes or substitutions will now be made by those skilled in the art based on the teachings of the present invention, which fall within the scope of the claims.

Claims (9)

1. Mechanical properties test system, including many mechanical properties test equipment and the feed machine of feeding for these mechanical properties test equipment, its characterized in that, a feed machine corresponds many mechanical properties test equipment, is equipped with the material transporting device, specifically: the mechanical property testing equipment comprises a pressure testing machine and a tensile testing machine; the material feeder feeds out a tested material, the material conveying device takes the tested material fed out by the material feeder away and conveys the tested material to the pressure testing machine, and the pressure testing machine presses the tested material; the material conveying device takes the tested material supplied by the material supply machine to the mechanical property testing equipment and sends the material to the tensile testing machine, and the tensile testing machine stretches the tested material.

2. The mechanical property testing system of claim 1, wherein: the tensile test machine comprises an upper tensile clamp, a lower tensile clamp and a material returning mechanism, the upper tensile clamp and the lower tensile clamp respectively clamp the upper end and the lower end of a long-strip-shaped tested material, the vertical long-strip-shaped tested material is subjected to tensile test, the long-strip-shaped tested material is loosened after the test is completed so as to return the material, the material returning mechanism comprises a material returning push rod, and the material returning push rod transversely extends into a crack of the lower tensile clamp so as to push the crushed materials out of the crack.

3. The mechanical property testing system of claim 2, wherein: the material returning mechanism comprises an upper material returning clamp and a lower material returning clamp, and the upper part and the lower part of the tested strip-shaped tested material are clamped away respectively by the upper material returning clamp and the lower material returning clamp to realize material returning.

4. The mechanical property testing system of claim 3, wherein: the upper material returning clamp and the lower material returning clamp are positioned on the same side of the strip-shaped tested material as the material returning push rod.

5. The mechanical property testing system of claim 1, wherein: the pressure testing machine comprises a material supporting mechanism, wherein two material supporting parts are respectively upwards extended from the left side and the right side of the material supporting mechanism to support the left end and the right end of a long-strip-shaped tested material, a space is reserved between the two material supporting parts to enable the middle of the long-strip-shaped tested material to be suspended, the pressure testing machine further comprises a material pressing part, the material pressing part presses the middle of the long-strip-shaped tested material to perform pressure testing, a material returning operation part and an inclined material returning channel are arranged, the material returning operation part operates the tested long-strip-shaped tested material, and the material returning operation part is separated from the material supporting parts and then falls into the material returning channel and slides down along the inclined material returning channel.

6. The mechanical property testing system of claim 5, wherein: a material returning channel plate for forming the material returning channel is arranged; the rear part of the material returning channel plate is used as the material returning operation part, and particularly, the elongated tested material is pushed forwards to be separated from the material supporting part and then falls into the material returning channel, and in the state, the material returning channel plate forms a material returning channel which is inclined to the rear and high and low, so that the elongated tested material slides downwards and falls off.

7. The mechanical property testing system of claim 6, wherein: the material returning channel plate rear part is provided with a system which extends backwards between the two material supporting parts to cross the strip-shaped tested material, the material returning channel plate rotates around a transverse axis positioned in the middle of the material returning channel plate, the rotating direction is that the front part rotates downwards and the rear part rotates upwards, so that the rear part is provided with a system which moves upwards to stir the middle part of the strip-shaped tested material, and the strip-shaped tested material moves upwards to separate from the material supporting part and then falls into the material returning channel.

8. The mechanical property testing system of claim 7, wherein: the middle part of the material returning channel plate is hinged on the material supporting mechanism so as to form the transverse axis at the hinged position.

9. The mechanical property testing system of claim 5 or 7, wherein: the top parts of the two material supporting parts are recessed at the positions adjacent to the hollow part between the two material supporting parts to form supporting parts, a limiting wall is formed in front of the supporting parts, and the two supporting parts respectively support the left end and the right end of the elongated tested material.

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