Tensile property testing device and testing method for elastic fabric production

Abstract

The invention relates to the technical field of elastic fabric testing, in particular to a tensile property testing device for elastic fabric production and a testing method.The tensile property testing device comprises a device base, a mounting platform is fixedly connected to the top surface of the device base, a rotating wheel support A is fixedly connected to the top surface of the mounting platform, and a rotating wheel support B is fixedly connected to the top surface of the mounting platform; the top surface of the installation platform is fixedly connected with a stand column support and a roller support, the inner side surface of the roller support is rotationally connected with a conveying roller, a manual stretching mechanism is arranged on the outer side surface of a rotating wheel support A, and a batch detection mechanism is arranged on the top surface of the installation platform. A recovery detection mechanism is arranged on the surface of the top of the manual stretching mechanism, pressure is applied when the elastic cloth is rolled through a jacking cone, the fracture position of the elastic cloth can be actively selected, pressure is applied to the elastic cloth at the two ends and the middle at the same time, the fracture limit can be obtained more quickly, and the number of rolling turns is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of elastic fabric performance testing, in particular to a tensile performance testing device and a testing method for elastic fabric production. Background Art

[0002] Elastic fabric performance testing is an important step in ensuring fabric quality and functionality. This test mainly evaluates the performance of elastic fabric in terms of stretch, recovery and durability. By simulating actual usage scenarios, testers can accurately grasp the deformation and recovery ability of elastic fabric under different stresses, thereby determining whether it meets specific application requirements. In addition, durability testing can also reflect the stability of elastic fabric during long-term use, providing consumers with reliable quality assurance.

[0003] Currently, tensile tests are usually used to test the performance of elastic fabrics.

[0004] The existing patent (publication number: CN221840856U) discloses a stretching device for processing elastic fabric, including a support table, the front and rear ends of the middle position of the upper end of the support table are both provided with mounting frames, and the mounting frames are fixedly connected to the support table; and also includes: a second slide, which is arranged inside the mounting frame, the interior of the second slide is provided with a fixed block, the interior of the fixed block is provided with a measuring cavity, the interior of the measuring cavity is provided with a fixed rod, the exterior of the fixed rod is provided with a roller, and the roller is fixedly connected to the fixed rod, and mounting blocks are provided above both sides of the support table. In the above-mentioned device, it may be difficult to apply pressure to both ends and the middle of the elastic fabric at the same time, which limits the test speed, increases the number of winding turns or the stretching length of the stretching device, reduces the test efficiency, and may be difficult to actively select the breaking position of the elastic fabric, resulting in the uncontrollability of the test results and the inability to test the breaking strength of a specific area in a targeted manner.

[0005] In view of this, we proposed a tensile performance testing device and a testing method for stretch fabric production. Summary of the invention

[0006] The purpose of the present invention is to provide a tensile performance testing device and a testing method for elastic fabric production, so as to solve the problem that the existing elastic fabric testing device proposed in the above background technology may be difficult to apply pressure on both ends and the middle of the elastic fabric at the same time, which limits the test speed, increases the number of winding turns or the stretching length of the stretching device, reduces the test efficiency, and may be difficult to actively select the breaking position of the elastic fabric, resulting in the uncontrollability of the test results and the inability to test the breaking strength of a specific area in a targeted manner. To achieve the above purpose, the present invention provides the following technical solutions: A tensile performance testing device and a testing method for elastic fabric production, comprising a device base, the top surface of the device base is fixedly connected to a mounting platform, the top surface of the mounting platform is fixedly connected to a rotating wheel bracket A, the top surface of the mounting platform is fixedly connected to a rotating wheel bracket B, the top surface of the mounting platform is fixedly connected to a column bracket, the top surface of the mounting platform is fixedly connected to a roller bracket, the inner surface of the roller bracket is rotatably connected to a conveying roller, the outer surface of the rotating wheel bracket A is provided with a manual stretching mechanism, the top surface of the mounting platform is provided with a batch detection mechanism, and the top surface of the manual stretching mechanism is provided with a recovery detection mechanism; The number of the rotating wheel brackets A is two, and the two rotating wheel brackets A are symmetrically distributed with the central axis of the installation platform as the symmetry axis, and the number of the column brackets is two.

[0007] Preferably, the manual stretching mechanism includes a fixed splint, which is fixedly connected to the outer surface of the rotating wheel bracket A, and the outer surface of the fixed splint is slidably connected to a movable splint, and the outer surface of the fixed splint is fixedly connected to a connecting bolt, and the outer surface of the connecting bolt is threadedly connected to a fastening nut, the inner surface of the rotating wheel bracket A is rotatably connected to an active rotating wheel, one side surface of the rotating wheel bracket A is rotatably connected to a manual rocker, and the inner surface of the rotating wheel bracket A on the other side of the mounting platform is rotatably connected to a driven rotating wheel, the inner surface of the rotating wheel bracket B is rotatably connected to a winding rotating wheel, and one end of the winding rotating wheel is fixedly connected to a positioning Ratchet, the outer surface of the positioning ratchet is meshed with a control pawl, the outer surface of the control pawl is fixedly connected to a pawl toggle column, both ends of the winding wheel are fixedly connected to lifting cams, the outer surface of the wheel bracket B is provided with a driven moving groove, the top surface of the lifting cam is slidably connected to a driven linear rod, the outer surface of the driven linear rod is fixedly connected to a rising platform, the outer surface of the rising platform is fixedly connected to a limiting column, the outer surface of the wheel bracket B is fixedly connected to a column limiting groove, the outer surface of the column limiting groove is fixedly connected to a counting ruler, and the inner surface of the rising platform is fixedly connected to a lifting cone.

[0008] Preferably, the number of the fixed splints is three, and two of the fixed splints are symmetrically distributed on the outer surface of the active rotating wheel, the number of the connecting bolts on each fixed splint is two, and they are symmetrically distributed with the central axis of the fixed splint as the symmetry axis, the connecting bolt passes through the movable splint, the fastening nut is slidably connected to the outer surface of the movable splint, the manual rocker passes through the rotating wheel bracket A and is fixedly connected to the active rotating wheel, the ratchet toggle column passes through the rotating wheel bracket B and is rotatably connected to the inner wall thereof, the number of the driven linear rods is two, and the two driven linear rods are symmetrically distributed with the central axis of the rotating wheel bracket B as the symmetry axis, the driven linear rod is slidably connected to the inner surface of the driven movable groove, the number of the limiting posts and the post limiting grooves is four, and the four limiting posts and the four post limiting grooves are symmetrically distributed with the central axis of the rotating wheel bracket B as the symmetry axis, the limiting posts are slidably connected to the inner surface of the post limiting grooves, and the surface of the lifting cam is a constant velocity spiral line.

[0009] Preferably, the batch detection mechanism includes a motor bracket, which is fixedly connected to the top surface of the mounting platform, the inner surface of the motor bracket is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to an active turntable, the outer surface of the active turntable is provided with a toggle mounting groove, the outer surface of the active turntable is fixedly connected to a scale, the inner surface of the toggle mounting groove is slidably connected to a small-diameter bolt, the outer surface of the small-diameter bolt is threadedly connected to a small-diameter nut, one end of the small-diameter nut is fixedly connected to a fastening sleeve, the outer surface of the fastening sleeve is slidably connected to a direct-acting housing, the outer surface of the direct-acting housing is fixedly connected to a rack connecting frame, one end of the rack connecting frame is fixedly connected to a reciprocating rack, the top surface of the column bracket is fixedly connected to a direct-acting limit column, and the outer surface of the reciprocating rack is meshed with a driven gear.

[0010] Preferably, the small-diameter bolt passes through the toggle mounting slot and the direct-acting housing, the fastening sleeve is slidably connected to the outer surface of the active turntable, the number of the direct-acting limit columns is two, and the two direct-acting limit columns are symmetrically distributed with the central axis of the direct-acting housing as the symmetry axis, the direct-acting limit column passes through the direct-acting housing and is slidably connected to the inner wall thereof, and the driven gear is fixedly connected to the end of the active turntable away from the manual rocker.

[0011] Preferably, the recovery detection mechanism includes a rotating base, the rotating base is rotatably connected to the top surface of the lifting platform, the outer surface of the rotating base is slidably connected with a rotating limit groove, the two sides of the rotating base are fixedly connected with transverse slide rails, the inner surface of the transverse slide rails is slidably connected with the ink pad platform, the top surface of the rotating base is fixedly connected with the top bracket, the outer surface of the top bracket is fixedly connected with the mounting shaft, the outer surface of the mounting shaft is slidably connected with the pressing platform, the outer surface of the pressing platform is hinged with a linkage hinge rod, the bottom surface of the pressing platform is rotatably connected with an embossing roller brush, the outer surface of the pressing platform is provided with a pressing limit groove, the inner surface of the pressing limit groove is fixedly connected with a spring mounting column, and the outer surface of the spring mounting column is sleeved with a reset spring.

[0012] Preferably, the rotation limit groove is opened on the top surface of the rising platform, the number of the ink pad platforms is two, and the two ink pad platforms are symmetrically distributed with the central axis of the rotating base as the axis of symmetry, the number of the embossing roller brushes is two, and the two embossing roller brushes are symmetrically distributed with the central axis of the rotating base as the axis of symmetry, the top surface of the ink pad platform is slidably connected with the outer surface of the embossing roller brush, the number of the linkage hinged rods is two, and the two ends of the two linkage hinged rods are respectively hinged to the ink pad platform and the downward pressure platform, the mounting shaft passes through the downward pressure limit groove, the spring mounting column passes through the mounting shaft and is slidably connected to its inner wall, and the two ends of the reset spring are respectively slidably connected to the downward pressure limit groove and the outer surface of the mounting shaft.

[0013] A testing method for a tensile performance testing device for stretch fabric production, comprising the following steps: S1. Place one end of the elastic cloth to be tested between the fixed clamping plate and the movable clamping plate on the driving wheel, and tighten the connecting bolt to clamp the end of the elastic cloth. The other end is wrapped around the surface of the driven wheel and around the winding wheel for one circle, and then placed between the fixed clamping plate and the movable clamping plate on the wheel bracket B and tighten the connecting bolt to clamp it.

[0014] S2, manually turning the manual rocker to drive the active wheel to rotate, the active wheel gradually reels the elastic cloth and stretches it, and drives the winding wheel to rotate, so that the lifting cams on both sides lift the driven linear rod and the lifting platform, and the lifting cone lifts the elastic cloth above to concentrate the force on the elastic cloth until the elastic cloth breaks at the lifting cone. When the elastic cloth is no longer stretched after breaking, the lifting cam stops rotating and the lifting platform stops rising immediately. The lifting cam cannot be reversed by the action of the positioning ratchet, and the lifting platform will stop at the current position. At this time, according to the position of the counting ruler of the limit column on the limit groove of the column, the height of the lifting platform when the elastic cloth breaks is obtained, and the tensile performance of the elastic cloth is obtained; S3. After the stretching limit of the elastic cloth is manually detected, the position of the direct-acting housing on the active turntable is adjusted by a scale, so that the rotation angle of the driven gear driven by the direct-acting housing does not exceed the rotation angle at which the elastic cloth breaks after being stretched due to the rotation and winding of the active wheel. The driving motor is started, and when the active turntable rotates, the direct-acting housing is pushed and pulled to make a vertical reciprocating movement. The reciprocating direct-acting stroke is determined by the position of the direct-acting housing on the active turntable. The reciprocating rack is driven by the rack connecting frame to reciprocate and directly mesh with the driven gear, so that the uniform rotation of the active turntable is changed into the reciprocating rotation of the active wheel with a variable rotation angle. The elastic cloth will be stretched and the active wheel will recover. S4. Rotate the rotating base to align with the rising platform, press the pressing platform and drive the stamping roller brush to press down. At the same time, the linkage hinged rod on the outside of the pressing platform will push the ink pad platform to both sides in the horizontal slide rail. At first, the stamping roller brush is still in contact with the ink pad platform. The stamping roller brush will first be stained with the ink pad on the ink pad platform and continue to descend until the stamping roller brush contacts the installed elastic cloth, leaving two marks on the surface of the elastic cloth. After the stretching or fatigue test of the elastic cloth is completed, check whether the spacing between the two marks matches the spacing between the stamping roller brushes to obtain the recovery of the elastic cloth after stretching.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the stretching performance of the elastic cloth is obtained by setting a manual stretching mechanism, and the breaking position of the elastic cloth can be actively selected by applying pressure by a lifting cone when the elastic cloth is rolled up. In addition, applying pressure to the elastic cloth at both ends and in the middle at the same time can obtain the breaking limit more quickly and reduce the number of winding turns.

[0016] In the present invention, through the setting of the batch detection mechanism, the working process of the manual stretching mechanism can be automatically simulated by the motor, and the stretching limit can be customized, which is used for batch testing of the same batch of elastic fabrics after manually testing the stretching performance of the elastic fabric, and the reciprocating rotation of the active wheel will reciprocately stretch and restore the elastic fabric, which can be used to detect the fatigue strength of the elastic fabric at the same time.

[0017] In the present invention, by setting up a recovery detection mechanism, two marks are left on the surface of the elastic cloth. After the stretching or fatigue detection of the elastic cloth is completed, it is checked whether the spacing between the two marks matches the spacing of the embossing roller brush to obtain the recovery condition of the elastic cloth after stretching. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic side view of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the rotating wheel bracket A, the movable splint and the active rotating wheel cooperating with each other in the present invention; Figure 3 The active rotating wheel, the movable splint and the exploded view of the movable splint of the present invention; Figure 4 It is an exploded view of the rotating wheel support B and the winding rotating wheel lifting platform of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 It is a schematic diagram of the structure of the active rotating wheel, the positioning ratchet wheel and the lifting cam cooperating with each other in the present invention; Figure 7 It is a schematic diagram of the structure of the mutual cooperation of the components of the batch detection mechanism of the present invention; Figure 8 It is an exploded view of the components of the batch detection mechanism of the present invention; Fig. 9 It is a schematic diagram of the structure of the active turntable, the fastening sleeve and the direct-acting housing cooperating with each other in the present invention; Fig.10 It is a schematic diagram of the structure of the direct-acting housing, the rack connecting frame and the reciprocating rack cooperating with each other in the present invention; Fig.11 It is a schematic diagram of the structure of the cooperation between the components of the recovery detection mechanism of the present invention; Fig.12 It is a schematic diagram of the structure of the mutual cooperation among the pressing platform, the linkage hinge rod and the ink pad platform of the present invention; Fig.13 For the present invention Fig.12 Enlarged view of point B in the middle; Fig.14 It is a schematic diagram of the structure of the cooperation between the pressing platform, the ink pad platform and the embossing roller brush of the present invention; Fig.15 It is a schematic diagram of the structure in which the lifting platform, the rotating base and the rotating limit groove cooperate with each other in the present invention.

[0019] In the figure: 1. Device base; 2. Mounting platform; 21. Wheel bracket A; 22. Wheel bracket B; 23. Column bracket; 24. Roller bracket; 25. Conveying roller; 3. Manual stretching mechanism; 31. Fixed splint; 311. Movable splint; 312. Connecting bolt; 3121. Fastening nut; 32. Active rotating wheel; 321. Manual rocker; 322. Driven rotating wheel; 33. Winding rotating wheel; 331. Positioning ratchet; 3311. Control pawl; 3312. Ratchet toggle column; 34. Lifting cam; 341. Driven moving groove; 342. Driven linear rod; 35. Rising platform; 351. Limit column; 352. Column limit groove; 353. Counting ruler; 36. Lifting cone; 4 , batch detection mechanism; 41, motor bracket; 42, driving motor; 43, active turntable; 431, toggle installation slot; 432, scale; 433, small diameter bolt; 4331, small diameter nut; 4332, fastening sleeve; 44, direct-acting housing; 441, rack connecting frame; 442, reciprocating rack; 45, direct-acting limit column; 46, driven gear; 5, recovery detection mechanism; 51, rotating base; 511, rotating limit slot; 52, horizontal slide rail; 53, ink pad platform; 54, top bracket; 541, mounting shaft; 55, pressing platform; 551, linkage hinge rod; 552, stamping roller brush; 553, pressing limit slot; 5531, spring mounting column; 5532, reset spring. DETAILED DESCRIPTION

[0020] 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 described embodiments 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 technical personnel in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figures 1 to 15The present invention provides a technical solution: a tensile performance testing device and a testing method for stretch fabric production, comprising a device base 1, a mounting platform 2 is fixedly connected to the top surface of the device base 1, a rotating wheel bracket A21 is fixedly connected to the top surface of the mounting platform 2, a rotating wheel bracket B22 is fixedly connected to the top surface of the mounting platform 2, a column bracket 23 is fixedly connected to the top surface of the mounting platform 2, a roller bracket 24 is fixedly connected to the top surface of the mounting platform 2, a conveying roller 25 is rotatably connected to the inner surface of the roller bracket 24, and the rotating wheel bracket A21 is fixedly connected to the top surface of the mounting platform 2. The outer surface of the manual stretching mechanism 3 is provided, the top surface of the mounting platform 2 is provided with a batch detection mechanism 4, the top surface of the manual stretching mechanism 3 is provided with a recovery detection mechanism 5, the device base 1 and the mounting platform 2 provide a platform for installing various components, the rotating wheel bracket A21 and the rotating wheel bracket B22 are used to install the active rotating wheel 32, the driven rotating wheel 322 and the winding rotating wheel 33 on the manual stretching mechanism 3, the column bracket 23 is provided with a direct-acting limit column 45, and the roller bracket 24 is provided with a plurality of rotatable conveying rollers 25, which play a supporting role when the elastic fabric to be detected is placed on the surface, and reduce the friction generated by the elastic fabric when it moves on the surface by sliding; There are two rotating wheel brackets A21, and the two rotating wheel brackets A21 are symmetrically distributed with the central axis of the installation platform 2 as the symmetry axis, and there are two column brackets 23.

[0022] The manual stretching mechanism 3 includes a fixed splint 31, which is fixedly connected to the outer surface of the rotating wheel bracket A21, and a movable splint 311 is slidably connected to the outer surface of the fixed splint 31, and a connecting bolt 312 is fixedly connected to the outer surface of the fixed splint 31, and a fastening nut 3121 is threadedly connected to the outer surface of the connecting bolt 312, and the inner surface of the rotating wheel bracket A21 is rotatably connected to the driving rotating wheel 32, and a manual rocker 321 is rotatably connected to the surface of one side of the rotating wheel bracket A21, and a driven rotating wheel 322 is rotatably connected to the inner surface of the rotating wheel bracket A21 on the other side of the mounting platform 2, and a winding rotating wheel 33 is rotatably connected to the inner surface of the rotating wheel bracket B22, and one end of the winding rotating wheel 33 is fixedly connected to a positioning ratchet 331, and the positioning ratchet The outer surface of 331 is meshed with a control pawl 3311, and the outer surface of the control pawl 3311 is fixedly connected with a pawl toggle column 3312. Both ends of the winding wheel 33 are fixedly connected with a lifting cam 34. The outer surface of the wheel bracket B22 is provided with a driven moving groove 341. The top surface of the lifting cam 34 is slidably connected with a driven direct-acting rod 342. The outer surface of the driven direct-acting rod 342 is fixedly connected with a lifting platform 35. The outer surface of the lifting platform 35 is fixedly connected with a limiting column 351. The outer surface of the wheel bracket B22 is fixedly connected with a column limiting groove 352. The outer surface of the column limiting groove 352 is fixedly connected with a counting ruler 353. The inner surface of the lifting platform 35 is fixedly connected with a lifting cone 36. Through a manual stretching machine The setting of structure 3, during use, the fixed clamping plate 31 is connected to the movable clamping plate 311 by the connecting bolt 312, and the movable clamping plate 311 is tightened by tightening the nut 3121 to make the movable clamping plate 311 close to the fixed clamping plate 31 to reduce the distance, and one end of the elastic cloth to be tested is placed between the fixed clamping plate 31 and the movable clamping plate 311 for clamping, wherein a set of fixed clamping plates 31 and the movable clamping plate 311 are installed on the rotating wheel bracket A21, and the position of the elastic cloth at this end remains unchanged, and the elastic cloth is passed through the winding wheel 33 from the bottom, and is wound around the winding wheel 33 for one circle, and continues to bypass the driven rotating wheel 322, and the other end is clamped between the fixed clamping plate 31 and the movable clamping plate 311 on the driving rotating wheel 32 for rotating and winding to test the tensile performance. When both ends of the elastic cloth are clamped and in When in the tensioned state, the lifting cam 34 is in the initial position. At this time, the active wheel 32 is rotated by the manual rocker 321, and the active wheel 32 gradually reels the elastic cloth and stretches it. At this time, one end of the elastic cloth is fixed and the other end is reeled in. The stretched part of the elastic cloth will be reeled in, that is, it is transmitted along the active wheel 32 and drives the winding wheel 33 to rotate. During the rotation of the winding wheel 33, the lifting cams 34 on both sides will be driven to rotate. The outer contour of the lifting cam 34 is a constant speed spiral and is in contact with the driven linear rod 342. The relationship that the constant speed spiral rotation angle is proportional to the radius is used, so that when the lifting cam 34 rotates, the driven linear rod 342 will continue to lift the lifting platform 35, and drive the lifting cone 36 to lift the elastic cloth above to apply concentrated force to the elastic cloth.Until the elastic cloth breaks at the jacking cone 36, when the elastic cloth is no longer stretched after the break, the lifting cam 34 stops rotating and the lifting platform 35 stops rising immediately. Since the positioning ratchet 331 is installed at one end of the winding wheel 33, the positioning ratchet 331 is engaged by the control pawl 3311, so that the lifting cam 34 cannot be reversed, and the lifting platform 35 will stop at the current position. The lifting platform 35 limits the rising path through the limiting column 351 and the column limiting groove 352, and the position of the counting ruler 353 on the column limiting groove 352 can be used to obtain the height of the lifting platform 35 when the elastic cloth breaks, and the tensile performance of the elastic cloth can be obtained. By applying pressure through the jacking cone 36 when winding the elastic cloth, the breaking position of the elastic cloth can be actively selected, and applying pressure to the elastic cloth at both ends and the middle at the same time can obtain the breaking limit faster and reduce the number of winding turns. After the detection is completed, the pawl toggles the column 3312 so that it no longer limits the positioning ratchet 331, and the lifting platform 35 descends and resets.

[0023] There are three fixed splints 31, and two of them are symmetrically distributed on the outer surface of the active rotating wheel 32. There are two connecting bolts 312 on each fixed splint 31, and they are symmetrically distributed with the central axis of the fixed splint 31 as the symmetry axis. The connecting bolts 312 penetrate the movable splint 311, and the fastening nut 3121 is slidably connected to the outer surface of the movable splint 311. The manual rocker 321 penetrates the rotating wheel bracket A21 and is fixedly connected to the active rotating wheel 32. The ratchet toggle column 3312 penetrates the rotating wheel bracket B22 and is rotatably connected to its inner wall. There are two driven linear rods 342, and the two driven linear rods 342 are symmetrically distributed with the central axis of the rotating wheel bracket B22 as the symmetry axis. The driven linear rod 342 is slidably connected to the inner surface of the driven movable groove 341. There are four limiting columns 351 and column limiting grooves 352, and the four limiting columns The column 351 and the four column limit grooves 352 are symmetrically distributed with the central axis of the rotating wheel bracket B22 as the symmetry axis. The limit column 351 is slidably connected to the inner surface of the column limit groove 352. The surface of the lifting cam 34 is a constant speed spiral. The fixed clamp 31 and the movable clamp 311 respectively clamp the two ends of the elastic cloth. The distance between the fixed clamp 31 and the movable clamp 311 is adjusted by connecting the bolt 312 and the fastening nut 3121 to clamp the elastic cloth. The manual rocker 321 drives the active rotating wheel 32 to rotate, which is used to obtain the required tensile limit of the elastic cloth according to the number of rotations. The driven linear rod 342 moves in the driven movable groove 341 to limit the rising path of the lifting platform 35 so that its vertical rising position will not be offset. The angle of the lifting cam 34 is proportional to the radius, so that the rotation angle of the lifting cam 34 is also proportional to the rising height of the lifting platform 35 for easy conversion.

[0024] The batch detection mechanism 4 includes a motor bracket 41, the motor bracket 41 is fixedly connected to the top surface of the mounting platform 2, the inner surface of the motor bracket 41 is fixedly connected to the driving motor 42, the output end of the driving motor 42 is fixedly connected to the active turntable 43, the outer surface of the active turntable 43 is provided with a toggle mounting groove 431, the outer surface of the active turntable 43 is fixedly connected to a scale 432, the inner surface of the toggle mounting groove 431 is slidably connected to a small-diameter bolt 433, the outer surface of the small-diameter bolt 433 is threadedly connected to a small-diameter nut 4331, and one end of the small-diameter nut 4331 is fixedly connected to the A fastening sleeve 4332 is fixedly connected, and the outer surface of the fastening sleeve 4332 is slidably connected with a direct-acting housing 44, and the outer surface of the direct-acting housing 44 is fixedly connected with a rack connecting frame 441, and one end of the rack connecting frame 441 is fixedly connected with a reciprocating rack 442, and the top surface of the column bracket 23 is fixedly connected with a direct-acting limit column 45, and the outer surface of the reciprocating rack 442 is meshed with a driven gear 46. Through the setting of the batch detection mechanism 4, during use, the driving motor 42 will push and pull the direct-acting housing 44 when driving the active turntable 43 to rotate, so that it can be realized on the direct-acting limit column 45. The range of the reciprocating direct motion is determined by the position of the direct-acting housing 44 to the center of the active turntable 43. During the reciprocating direct motion of the direct-acting housing 44, the reciprocating rack 442 is driven to reciprocate and direct through the rack connecting frame 441, and meshes with the driven gear 46. The driven gear 46 is fixedly connected to the active turntable 32, so as to realize the conversion of the uniform rotation of the active turntable 43 into the reciprocating rotation of the active turntable 32 with a variable rotation angle. When the manual stretching mechanism 3 obtains the stretching limit of the elastic cloth, the position of the direct-acting housing 44 on the active turntable 43 is adjusted by the scale 432, so that it drives the driven gear 46 to rotate. The rotation angle of the movable gear 46 does not exceed the rotation angle at which the elastic cloth is stretched and broken due to the rotation and winding of the active wheel 32. At this time, after the driving motor 42 is started, the reciprocating angle of the active wheel 32 is fixed. After a new elastic cloth is installed on the device and started, the new elastic cloth will be stretched and the active wheel 32 will recover. If the tensile performance of the elastic cloth is the same as that of the manual test, it will not break. It is used for batch testing of the same batch of elastic cloth after the tensile performance of the elastic cloth is manually tested. The reciprocating rotation of the active wheel 32 will reciprocate to stretch and recover the elastic cloth, and can also be used to detect the fatigue strength of the elastic cloth.

[0025] The small-diameter bolt 433 penetrates the toggle mounting groove 431 and the direct-acting housing 44, and the fastening sleeve 4332 is slidably connected to the outer surface of the active turntable 43. There are two direct-acting limit columns 45, and the two direct-acting limit columns 45 are symmetrically distributed with the central axis of the direct-acting housing 44 as the symmetry axis. The direct-acting limit column 45 penetrates the direct-acting housing 44 and is slidably connected to its inner wall. The driven gear 46 is fixedly connected to the end of the active rotating wheel 32 away from the manual rocker 321. The small-diameter bolt 433 penetrates the toggle mounting groove 431 and the direct-acting housing 44 on the active turntable 43. When the small-diameter nut 4331 is tightened, the fastening sleeve 4332 and the small-diameter bolt 433 will be clamped on the active turntable 43. Because it is a bolt connection, it is easy to disassemble and assemble to adjust the position. When the position After being fixed, the direct-acting housing 44 can rotate on the fastening sleeve 4332 but its position remains unchanged, so that the active turntable 43 can move the direct-acting housing 44 through the small-diameter bolt 433, and the direct-acting housing 44 is limited by the direct-acting limit columns 45 on both sides to realize reciprocating up and down direct motion, thereby driving the active rotating wheel 32 to reciprocate forward and reverse through the reciprocating rack 442. When the manual stretching mechanism 3 is used, the reciprocating rack 442 needs to be lifted upward, and the part of the bottom of the reciprocating rack 442 without a tooth groove is brought into contact with the driven gear 46, so that during manual control, the rotation of the driven gear 46 will not drive the reciprocating rack 442 to move up and down, and the reciprocating rack 442 is in contact with the inner wall with a certain friction, and will not slide down due to the influence of gravity when not affected by external force, and maintain the current state.

[0026] The recovery detection mechanism 5 includes a rotating base 51, the rotating base 51 is rotatably connected to the top surface of the lifting platform 35, the outer surface of the rotating base 51 is slidably connected to a rotating limit groove 511, the two sides of the rotating base 51 are fixedly connected to transverse slide rails 52, the inner surface of the transverse slide rails 52 is slidably connected to an ink pad platform 53, the top surface of the rotating base 51 is fixedly connected to a top bracket 54, the outer surface of the top bracket 54 is fixedly connected to a mounting shaft 541, the outer surface of the mounting shaft 541 is slidably connected to a pressing platform 55, and the outer surface of the pressing platform 55 is hingedly connected to The bottom surface of the pressing platform 55 is rotatably connected with an embossing roller brush 552, and the outer surface of the pressing platform 55 is provided with a pressing limit groove 553, and the inner surface of the pressing limit groove 553 is fixedly connected with a spring mounting column 5531, and the outer surface of the spring mounting column 5531 is sleeved with a reset spring 5532. Through the setting of the recovery detection mechanism 5, during use, the rotating base 51 can rotate on the rising platform 35, but the rotating path will be limited by the rotating limit groove 511. When the rotating base 51 rotates in the direction close to the rising platform 35 and reaches the limit position, the rotating base 5 1 is aligned with the rising platform 35, and the embossing roller brush 552 is perpendicular to the rising platform 35, and can be turned out when not in use to prevent affecting the moving path of the lifting cone 36. Before stretching or batch testing the elastic cloth, the pressing platform 55 is pressed down to move it on the mounting shaft 541, and the pressing platform 55 drives the embossing roller brush 552 to press down. At the same time, the linkage hinge rod 551 on the outer side of the pressing platform 55 will push the ink pad platform 53 to both sides in the horizontal slide rail 52 to maintain lateral movement and prevent affecting the descending path of the embossing roller brush 552. Initially, the embossing roller brush 552 is still in contact with the ink pad platform 53 , the embossing roller brush 552 and the ink pad platform 53 are still made of soft materials, approach each other and are squeezed, so that the embossing roller brush 552 is stained with the ink on the ink pad platform 53, until the embossing roller brush 552 contacts the installed elastic cloth, leaving two marks on the surface of the elastic cloth. At this time, the pressing platform 55 is released, and under the action of the reset spring 5532, the pressing platform 55 is lifted up and reset. Since the spacing of the embossing roller brush 552 is fixed, when the stretching or fatigue test of the elastic cloth is completed, check whether the spacing of the two marks matches the spacing of the embossing roller brush 552 to obtain the recovery of the elastic cloth after stretching.

[0027] The rotation limit groove 511 is opened on the top surface of the rising platform 35, the number of the ink pad platforms 53 is two, and the two ink pad platforms 53 are symmetrically distributed with the central axis of the rotating base 51 as the symmetry axis, the number of the stamping roller brushes 552 is two, and the two stamping roller brushes 552 are symmetrically distributed with the central axis of the rotating base 51 as the symmetry axis, the top surface of the ink pad platform 53 is slidably connected with the outer surface of the stamping roller brush 552, the number of the linkage hinge rods 551 is two, and the two ends of the two linkage hinge rods 551 are respectively hinged to the ink pad platform 53 and the pressing platform 55, and the mounting shaft 541 passes through the pressing limit groove 55 3 penetrates the pressing platform 55, the spring mounting column 5531 penetrates the mounting shaft 541 and is slidably connected to the inner wall thereof, the two ends of the return spring 5532 are slidably connected to the pressing limit groove 553 and the outer surface of the mounting shaft 541 respectively, the rotation limit groove 511 is used to limit the rotation range of the rotating base 51, two ink pad platforms 53 are provided to measure the distance between the imprints left, the stamping roller brush 552 rolls and presses down on the surface of the ink pad platform 53 to achieve ink staining, the symmetrical linkage hinged rods 551 push the ink pad platforms 53 on both sides, the pressing platform 55 moves on the mounting shaft 541, and will be reset by the return spring 5532.

[0028] In this embodiment, Figure 1 , Figure 2 As shown, the device base 1 and the mounting platform 2 provide a platform for mounting various components, and the rotating wheel bracket A21 and the rotating wheel bracket B22 are used to mount the active rotating wheel 32, the driven rotating wheel 322 and the winding rotating wheel 33 on the manual stretching mechanism 3; In this embodiment, Figure 3 , Figure 4 As shown, one end of the elastic cloth to be tested is placed between the fixed clamping plate 31 and the movable clamping plate 311 on the driving wheel 32, and the connecting bolt 312 is tightened to clamp the end of the elastic cloth, and the other end is wrapped around the surface of the driven wheel 322 and wrapped around the winding wheel 33 for one circle, and then placed between the fixed clamping plate 31 and the movable clamping plate 311 on the wheel bracket B22 and the connecting bolt 312 is tightened to clamp; In this embodiment, Figure 5 , Figure 6 As shown, during the rotation of the winding wheel 33, the lifting cams 34 on both sides are driven to rotate and contact with the driven linear rod 342, so that when the lifting cam 34 rotates, the driven linear rod 342 will continuously lift the lifting platform 35, and the driven linear rod 342 moves in the driven moving groove 341, and together with the limiting column 351 and the column limiting groove 352, limits the lifting path of the lifting platform 35; In this embodiment, Figure 7 , Figure 8 , Fig.10As shown, the driving motor 42 pushes and pulls the direct-acting housing 44 when driving the active turntable 43 to rotate, and changes the uniform rotation of the active turntable 43 into the reciprocating rotation of the active rotating wheel 32 with a variable rotation angle. The reciprocating rack 442 is driven to reciprocate and direct through the rack connecting frame 441, and engages with the driven gear 46. The driven gear 46 is fixedly connected to the active rotating wheel 32, so that the uniform rotation of the active turntable 43 is changed into the reciprocating rotation of the active rotating wheel 32 with a variable rotation angle, and the reciprocating angle of the active rotating wheel 32 can be adjusted by the position of the direct-acting housing 44 on the active turntable 43. In this embodiment, Fig. 9 As shown, the small-diameter bolt 433 penetrates the toggle mounting groove 431 and the direct-acting housing 44 on the active rotating disk 43. When the small-diameter nut 4331 is tightened, the fastening sleeve 4332 and the small-diameter bolt 433 are clamped on the active rotating disk 43. Since it is a bolt connection, it is convenient to disassemble and assemble to adjust the position. When the position is fixed, the direct-acting housing 44 can rotate on the fastening sleeve 4332 but the position remains unchanged. In this way, the active rotating disk 43 can toggle the direct-acting housing 44 through the small-diameter bolt 433. In this embodiment, Fig.11 , Fig.12 , Fig.14 As shown, the pressing platform 55 is pressed down to move on the mounting shaft 541, and the pressing platform 55 drives the stamping roller brush 552 to press down. At the same time, the linkage hinge rod 551 on the outer side of the pressing platform 55 pushes the ink pad platform 53 to both sides in the horizontal slide rail 52 to keep the horizontal movement and prevent the downward path of the stamping roller brush 552 from being affected. In this embodiment, Fig.13 As shown, the pressing platform 55 is pressed down to move on the mounting shaft 541. After being released, the pressing platform 55 is lifted up and reset on the mounting shaft 541 under the action of the return spring 5532; In this embodiment, Fig.15 As shown, the rotating base 51 can rotate on the lifting platform 35, but the rotating path will be limited by the rotating limit groove 511. When not in use, it can be rotated out to prevent affecting the moving path of the lifting cone 36.

[0029] A testing method for a tensile performance testing device for stretch fabric production, comprising the following steps: S1. Place one end of the elastic cloth to be tested between the fixed clamping plate 31 and the movable clamping plate 311 on the driving wheel 32, and tighten the connecting bolt 312 to clamp the end of the elastic cloth. The other end is wrapped around the surface of the driven wheel 322 and around the winding wheel 33 for one circle, and then placed between the fixed clamping plate 31 and the movable clamping plate 311 on the wheel bracket B22 and tighten the connecting bolt 312 to clamp it.

[0030] S2, manually turning the manual rocker 321 drives the active rotating wheel 32 to rotate, the active rotating wheel 32 gradually reels the elastic cloth and stretches it, and drives the winding rotating wheel 33 to rotate, so that the lifting cams 34 on both sides lift up the driven linear rod 342 and the lifting platform 35, and the lifting cone 36 lifts up the elastic cloth above to apply concentrated force to the elastic cloth until the elastic cloth breaks at the lifting cone 36. When the elastic cloth is no longer stretched after breaking, the lifting cam 34 stops rotating and the lifting platform 35 stops rising immediately. The lifting cam 34 cannot be reversed by the action of the positioning ratchet 331, and the lifting platform 35 will stop at the current position. At this time, according to the position of the counting ruler 353 of the limiting column 351 on the column limiting groove 352, the height of the lifting platform 35 when the elastic cloth breaks is obtained, and the stretching performance of the elastic cloth is obtained; S3, after the stretching limit of the elastic cloth is manually detected, the position of the direct-acting housing 44 on the driving turntable 43 is adjusted by the scale 432, so that the rotation angle of the driven gear 46 driven by the direct-acting housing 44 does not exceed the rotation angle of the driving wheel 32 rotating and winding, which causes the elastic cloth to break after being stretched, and the driving motor 42 is started. When the driving turntable 43 rotates, it pushes and pulls the direct-acting housing 44 to make a vertical reciprocating movement. The reciprocating direct-acting stroke is determined by the position of the direct-acting housing 44 on the driving turntable 43. The reciprocating rack 442 is driven by the rack connecting frame 441 to reciprocate and directly mesh with the driven gear 46, so that the uniform rotation of the driving turntable 43 is changed into the reciprocating rotation of the driving wheel 32 with a variable rotation angle. The elastic cloth will be stretched and the driving wheel 32 will recover. S4, rotate the rotating base 51 to align with the rising platform 35, press down the pressing platform 55 and drive the stamping roller brush 552 to press down, and at the same time, the linkage hinge rod 551 on the outer side of the pressing platform 55 will push the ink pad platform 53 to both sides in the horizontal slide rail 52. At first, the stamping roller brush 552 is still in contact with the ink pad platform 53, and the stamping roller brush 552 will first be stained with the ink on the ink pad platform 53, and continue to descend until the stamping roller brush 552 contacts the installed elastic cloth, leaving two marks on the surface of the elastic cloth. After the stretching or fatigue test of the elastic cloth is completed, check whether the spacing between the two marks matches the spacing of the stamping roller brush 552 to obtain the recovery of the elastic cloth after stretching.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tensile properties testing device for stretch fabric production, comprising a device base (1), characterized in that: The top surface of the device base (1) is fixedly connected to a mounting platform (2), the top surface of the mounting platform (2) is fixedly connected to a rotating wheel bracket A (21), the top surface of the mounting platform (2) is fixedly connected to a rotating wheel bracket B (22), the top surface of the mounting platform (2) is fixedly connected to a column bracket (23), the top surface of the mounting platform (2) is fixedly connected to a roller bracket (24), the inner surface of the roller bracket (24) is rotatably connected to a conveying roller (25), the outer surface of the rotating wheel bracket A (21) is provided with a manual stretching mechanism (3), the top surface of the mounting platform (2) is provided with a batch detection mechanism (4), and the top surface of the manual stretching mechanism (3) is provided with a recovery detection mechanism (5); The number of the rotating wheel brackets A (21) is two, and the two rotating wheel brackets A (21) are symmetrically distributed with the central axis of the installation platform (2) as the symmetry axis, and the number of the column brackets (23) is two.

2. The tensile properties testing device for stretch fabric production according to claim 1, characterized in that: The manual stretching mechanism (3) comprises a fixed clamp (31), the fixed clamp (31) being fixedly connected to the outer surface of a rotating wheel bracket A (21), the outer surface of the fixed clamp (31) being slidably connected to a movable clamp (311), the outer surface of the fixed clamp (31) being fixedly connected to a connecting bolt (312), the outer surface of the connecting bolt (312) being threadedly connected to a fastening nut (3121), the inner surface of the rotating wheel bracket A (21) being rotatably connected to a driving rotating wheel (32), one side surface of the rotating wheel bracket A (21) being rotatably connected to a manual rocker (321), the inner surface of the rotating wheel bracket A (21) on the other side of the mounting platform (2) being rotatably connected to a driven rotating wheel (322), the inner surface of the rotating wheel bracket B (22) being rotatably connected to a winding rotating wheel (33), one end of the winding rotating wheel (33) being fixedly connected to a positioning ratchet (331), The outer surface of the positioning ratchet (331) is meshed with a control pawl (3311), the outer surface of the control pawl (3311) is fixedly connected to a pawl toggling column (3312), both ends of the winding wheel (33) are fixedly connected to a lifting cam (34), the outer surface of the wheel bracket B (22) is provided with a driven moving groove (341), the top surface of the lifting cam (34) is slidably connected to a driven direct-acting rod (342), the outer surface of the driven direct-acting rod (342) is fixedly connected to a lifting platform (35), the outer surface of the lifting platform (35) is fixedly connected to a limiting column (351), the outer surface of the wheel bracket B (22) is fixedly connected to a column limiting groove (352), the outer surface of the column limiting groove (352) is fixedly connected to a counting ruler (353), and the inner surface of the lifting platform (35) is fixedly connected to a lifting cone (36).

3. The tensile properties testing device for stretch fabric production according to claim 2, characterized in that: The number of the fixed clamping plates (31) is three, and two of the fixed clamping plates (31) are symmetrically distributed on the outer surface of the active rotating wheel (32). The number of the connecting bolts (312) on each fixed clamping plate (31) is two, and they are symmetrically distributed with the central axis of the fixed clamping plate (31) as the symmetry axis. The connecting bolt (312) passes through the movable clamping plate (311), and the fastening nut (3121) is slidably connected to the outer surface of the movable clamping plate (311). The manual rocker (321) passes through the rotating wheel bracket A (21) and is fixedly connected to the active rotating wheel (32). The ratchet toggle column (3312) passes through the rotating wheel bracket B (22) and is connected to the inner surface of the rotating wheel bracket B (22). The driven linear motion rods (342) are rotatably connected to the wall, the number of the driven linear motion rods (342) is two, and the two driven linear motion rods (342) are symmetrically distributed with the central axis of the rotating wheel bracket B (22) as the symmetry axis, the driven linear motion rods (342) are slidably connected to the inner surface of the driven movable groove (341), the number of the limiting columns (351) and the column limiting grooves (352) are both four, and the four limiting columns (351) and the four column limiting grooves (352) are symmetrically distributed with the central axis of the rotating wheel bracket B (22) as the symmetry axis, the limiting columns (351) are slidably connected to the inner surface of the column limiting grooves (352), and the surface of the lifting cam (34) is a constant speed spiral.

4. The stretch performance testing device for stretch fabric production according to claim 1, characterized in that: The batch detection mechanism (4) comprises a motor bracket (41), the motor bracket (41) being fixedly connected to the top surface of the mounting platform (2), the inner surface of the motor bracket (41) being fixedly connected to a driving motor (42), the output end of the driving motor (42) being fixedly connected to an active turntable (43), the outer surface of the active turntable (43) being provided with a toggle mounting groove (431), the outer surface of the active turntable (43) being fixedly connected to a scale (432), the inner surface of the toggle mounting groove (431) being slidably connected to a small-diameter bolt (433), the small-diameter bolt ( The outer surface of the column bracket (23) is threadedly connected to a small-diameter nut (4331), one end of the small-diameter nut (4331) is fixedly connected to a fastening sleeve (4332), the outer surface of the fastening sleeve (4332) is slidably connected to a direct-acting housing (44), the outer surface of the direct-acting housing (44) is fixedly connected to a rack connecting frame (441), one end of the rack connecting frame (441) is fixedly connected to a reciprocating rack (442), the top surface of the column bracket (23) is fixedly connected to a direct-acting limit column (45), and the outer surface of the reciprocating rack (442) is meshed with a driven gear (46).

5. The tensile properties testing device for stretch fabric production according to claim 4, characterized in that: The small-diameter bolt (433) passes through the toggle mounting groove (431) and the direct-acting housing (44); the fastening sleeve (4332) is slidably connected to the outer surface of the driving rotating disk (43); the number of the direct-acting limiting columns (45) is two, and the two direct-acting limiting columns (45) are symmetrically distributed with the central axis of the direct-acting housing (44) as a symmetry axis; the direct-acting limiting columns (45) pass through the direct-acting housing (44) and are slidably connected to the inner wall thereof; and the driven gear (46) is fixedly connected to an end of the driving rotating wheel (32) away from the manual rocker (321).

6. The tensile properties testing device for stretch fabric production according to claim 1, characterized in that: The recovery detection mechanism (5) comprises a rotating base (51), the rotating base (51) is rotatably connected to the top surface of the lifting platform (35), the outer surface of the rotating base (51) is slidably connected to a rotating limit groove (511), both sides of the rotating base (51) are fixedly connected to transverse slide rails (52), the inner surface of the transverse slide rails (52) is slidably connected to an ink pad platform (53), the top surface of the rotating base (51) is fixedly connected to a top bracket (54), and the outer surface of the top bracket (54) is fixedly connected to a mounting shaft (541), the outer surface of the installation shaft (541) is slidably connected to a downward pressing platform (55), the outer surface of the downward pressing platform (55) is hingedly connected to a linkage hinged rod (551), the bottom surface of the downward pressing platform (55) is rotatably connected to an embossing roller brush (552), the outer surface of the downward pressing platform (55) is provided with a downward pressing limit groove (553), the inner surface of the downward pressing limit groove (553) is fixedly connected to a spring installation column (5531), and the outer surface of the spring installation column (5531) is sleeved with a return spring (5532).

7. The tensile properties testing device for stretch fabric production according to claim 6, characterized in that: The rotation limit groove (511) is formed on the top surface of the rising platform (35); the number of the ink pad platforms (53) is two, and the two ink pad platforms (53) are symmetrically distributed with the central axis of the rotating base (51) as the symmetry axis; the number of the stamping roller brushes (552) is two, and the two stamping roller brushes (552) are symmetrically distributed with the central axis of the rotating base (51) as the symmetry axis; the top surface of the ink pad platform (53) is slidably connected to the outer surface of the stamping roller brush (552); and the linkage There are two hinged rods (551), and both ends of the two linked hinged rods (551) are respectively hingedly connected to the ink pad platform (53) and the downward pressing platform (55); the mounting shaft (541) passes through the downward pressing platform (55) via the downward pressing limit groove (553); the spring mounting column (5531) passes through the mounting shaft (541) and is slidably connected to the inner wall thereof; and both ends of the return spring (5532) are respectively slidably connected to the outer surfaces of the downward pressing limit groove (553) and the mounting shaft (541).

8. The method for testing the tensile properties of stretch fabric according to claim 1, comprising the following steps: S1. Place one end of the elastic cloth to be tested between the fixed clamping plate (31) and the movable clamping plate (311) on the driving wheel (32), and tighten the connecting bolt (312) to clamp the end of the elastic cloth. The other end is wound around the surface of the driven wheel (322) and around the winding wheel (33) for one circle, and then placed between the fixed clamping plate (31) and the movable clamping plate (311) on the wheel bracket B (22) and tighten the connecting bolt (312) to clamp it. S2, manually rotating the manual rocker (321) to drive the active rotating wheel (32) to rotate, the active rotating wheel (32) gradually reels the elastic cloth and stretches it, and drives the winding rotating wheel (33) to rotate, so that the lifting cams (34) on both sides lift the driven linear rod (342) and the lifting platform (35), and the lifting cone (36) lifts the elastic cloth above to apply concentrated force to the elastic cloth until the elastic cloth breaks at the lifting cone (36). When the elastic cloth is no longer stretched after breaking, the lifting cam (34) stops rotating and the lifting platform (35) stops rising immediately. The lifting cam (34) cannot be reversed by the action of the positioning ratchet (331), and the lifting platform (35) stops at the current position. At this time, according to the position of the counting ruler (353) of the limiting column (351) on the column limiting groove (352), the height of the lifting platform (35) when the elastic cloth breaks is obtained, and the tensile property of the elastic cloth is obtained; S3, when the stretching limit of the elastic cloth is manually detected, the position of the direct-acting housing (44) on the driving turntable (43) is adjusted by the scale (432) so that the rotation angle of the driven gear (46) driven by the direct-acting housing (44) does not exceed the rotation angle at which the driving wheel (32) rotates and rewinds, causing the elastic cloth to break after being stretched, and the driving motor (42) is started. When the driving turntable (43) rotates, it pushes and pulls the direct-acting housing (44) to make a vertical reciprocating movement. The reciprocating direct-acting stroke is determined by the position of the direct-acting housing (44) on the driving turntable (43). The reciprocating rack (442) is driven by the rack connecting frame (441) to reciprocate and directly mesh with the driven gear (46), so that the uniform rotation of the driving turntable (43) is converted into the reciprocating rotation of the driving wheel (32) whose rotation angle can be changed. The elastic cloth will be stretched and the driving wheel (32) will recover. S4, the rotating base (51) is rotated to be aligned with the ascending platform (35), the pressing platform (55) is pressed down and the stamping roller brush (552) is driven to be pressed down, and at the same time, the linkage hinge rod (551) on the outer side of the pressing platform (55) pushes the ink pad platform (53) to both sides in the transverse slide rail (52). Initially, the stamping roller brush (552) is still in contact with the ink pad platform (53), and the stamping roller brush (552) is first stained with the ink pad on the ink pad platform (53), and continues to descend until the stamping roller brush (552) contacts the installed elastic cloth, leaving two marks on the surface of the elastic cloth. When the stretching or fatigue test of the elastic cloth is completed, check whether the spacing between the two marks matches the spacing between the stamping roller brush (552) to obtain the recovery condition of the elastic cloth after stretching.

Images