A tensile performance testing device for woven bag production

Abstract

The present invention relates to the technical field of woven bag testing, and specifically to a tensile performance testing device for woven bag production, comprising a machine body and a slider that is lifted and lowered on the machine body, wherein the lower end of the slider and the upper end of the machine base of the machine body are both fixedly mounted with pads via mounting seats. A suitable rectangular woven bag sample can first be cut out by sliding a cutter on the woven bag, and then the woven bag sample can be initially fixed. The position of the woven bag sample can then be initially adjusted so that it is centered and aligned as much as possible relative to the two pads. The woven bag sample can then be placed in a certain tensioned state and then linearly cut off the front and rear edges by two cutters to prevent burrs or unevenness on the front and rear edges of the woven bag sample, thereby improving the accuracy of the tensile performance test of the woven bag sample. The longitudinal axis of the woven bag sample after the second cutting can be as consistent as possible with the center line of the clamping block, further improving the accuracy of the tensile performance test of the woven bag sample.

Description

Technical Field

[0001] The present invention relates to the technical field of woven bag detection, in particular to a tensile performance detection device for woven bag production. Background Art

[0002] Woven bags are made from polymer materials such as polypropylene and polyethylene. These materials are extruded and stretched into flat yarns, which are then woven. Before leaving the factory, woven bags undergo several tests, including tensile testing, which is crucial to their safety and reliability.

[0003] During the test, first use a tool to cut out a rectangular sample from the woven bag, and then fix the two ends of the sample on the two clamps of the tensile testing machine. Of the two clamps, the upper clamp can be driven upward, and the lower clamp always remains fixed. The movement of the upper clamp can continuously stretch the sample until the sample breaks. Then observe the data displayed on the display screen of the tensile testing machine to detect the tensile performance of the woven bag.

[0004] However, when workers cut a rectangular sample from a woven bag, the blade slides across the surface of the bag, and improper operation can easily cause burrs or uneven edges to appear on the sample. (Because woven bags are made of crisscrossing flat wires with gaps between them, and the material itself has a certain toughness, if the blade is not perpendicular to the direction of the wires, the force is uneven, or the blade is not sharp enough, it is easy to hook some of the wires and pull them out of shape instead of cutting them neatly, thus forming burrs or uneven edges.) When such a sample is stretched, the burrs will become stress concentration points, affecting the accuracy of the test. Secondly, the longitudinal axis of the sample must be aligned with the centerline of the fixture. The sample must be evenly stressed along the axial direction during the stretching process. Samples with uneven edges will affect the workers' judgment of the alignment of the two. The tensile force can easily be decomposed into axial force and lateral force, which will also affect the accuracy of the test. Summary of the Invention

[0005] The purpose of the present invention is to provide a tensile performance testing device for woven bag production to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a tensile performance testing device for woven bag production, comprising a body and a slider lifted and lowered on the body, the lower end of the slider and the upper end of the base of the body are fixedly mounted with pads through mounting seats, a pad is fitted between the two pads, an elastic mechanism is provided between the lower pad and the pad, a pushing mechanism is provided between the upper pad and the pad, a woven bag sample is fitted together with the pad and the sides of the two pads, and a fixing mechanism is provided between the two pads and the woven bag sample;

[0007] The fixing mechanism includes pillars symmetrically fixedly connected to the side walls of the pad, and the outer walls of the two pillars are slidingly sleeved with a connecting plate. The connecting plate is fixedly connected to the side wall of the corresponding pad, and the woven bag sample is fitted between the clamping block and the pad.

[0008] Preferably, the elastic mechanism includes two support plates, and the two support plates are symmetrically fixedly connected to the upper end of the pad located below, and the side walls of the two support plates are slidably interspersed with multiple splicing columns from top to bottom, one end of each splicing column is fixedly connected to the side wall of the pad away from the woven bag sample, and the outer wall of each splicing column is slidably sleeved with a fourth spring, and each of the fourth springs is fixedly connected between the pad and the corresponding support plate.

[0009] Preferably, the pushing mechanism includes two pushing rods, which are respectively fixedly connected to the front and rear ends of the pad located above, and the lower ends of the two pushing rods are fitted with second oblique blocks, which are respectively fixedly connected to the upper edges of the front and rear ends of the pad.

[0010] Preferably, the fixing mechanism also includes a fixing plate, which is fixedly connected to one end of the two pillars away from the pad, and a threaded tube is connected in the middle of the side wall of the fixing plate, the inner wall of the threaded tube is threadedly connected to a stud, and the stud is rotatably connected to one end of the connecting plate corresponding to the connecting plate, and the side wall of the push plate away from the connecting plate is fitted with the fixed plate, and the side wall of the push plate away from the connecting plate is symmetrically fixedly connected with a guide column, and the two guide columns are both movable through the fixing plate, and a first spring is symmetrically fixedly connected between the fixing plate and the connecting plate, and the two first springs are respectively slidably sleeved on the outer walls of the two pillars.

[0011] Preferably, the fixing mechanism also includes two square plates, which are respectively slidably mounted on the outer walls of the two pillars near the pads, and a second spring is fixedly connected between the side walls of the two square plates away from the pads and the connecting plate, and the two second springs are respectively slidably mounted on the outer walls of the two pillars, and the side walls of the two square plates close to the pads are fitted with concave blocks, and the side walls of the two concave blocks corresponding to the pads are respectively fitted with the front and rear edges of the side of the woven bag sample, and the side walls of the two concave blocks corresponding to the pads are respectively provided with U-shaped grooves, and the two U-shaped grooves are respectively slidably matched with the two pillars, and elastic mechanisms are respectively provided between the two concave blocks and the two square plates.

[0012] Preferably, the elastic mechanism includes two connecting columns, which are symmetrically fixedly connected between the front and rear end surfaces of the inner side of the concave block, and both connecting columns are movably passed through the square plate, and a third spring is slidably sleeved on the outer walls of the two connecting columns, one end of the two third springs is fixedly connected to the inner rear end surface of the concave block, and the other end of the two third springs is fixedly connected to the rear end of the square plate.

[0013] Preferably, the upper ends of the two concave blocks are fixedly connected to L-shaped rods, the side walls of the two L-shaped rods are fixedly connected to blocks, the upper end of the push plate is symmetrically fixedly connected to a first oblique block, and the two first oblique blocks correspond to the two blocks respectively.

[0014] Preferably, electric push rods are fixedly installed symmetrically at the front and rear edges of the side walls of the body, the telescopic rear ends of the four electric push rods are fixedly connected to U-shaped plates, one end of the two U-shaped plates located in the front and one end of the two U-shaped plates located in the rear are commonly fixedly connected to cutters, the side walls of the pad and the side walls of the pad are symmetrically provided with knife grooves, the connecting plate is symmetrically provided with grooves on the side walls corresponding to the pad, and the two cutters slide in cooperation with the two grooves respectively.

[0015] Preferably, a square groove is provided in the middle of the upper end of the connecting plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Through the mutual cooperation of the pad, pad, elastic mechanism, pushing mechanism, fixing mechanism and elastic mechanism, the cutter can be used to slide and cut out a suitable rectangular woven bag sample on the woven bag. Then the woven bag sample can be initially fixed, and the position of the woven bag sample can be initially adjusted so that it can be centered and straightened as much as possible relative to the two pads. Then, the woven bag sample can be kept in a certain taut state and then the front and rear edges can be linearly cut off by two cutters to avoid burrs or unevenness on the front and rear edges of the woven bag sample, thereby improving the accuracy of the tensile performance test of the woven bag sample.

[0018] 2. Because the cutter, pad and clamp are parallel to each other, the longitudinal axis of the woven bag sample after the second cutting can be as consistent as possible with the center line of the clamp, so as to avoid the decomposition of the tensile force into axial force and lateral force, and further improve the accuracy of the tensile performance test of the woven bag sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the partial structure of the pad and two pads of the present invention;

[0021] Figure 3 It is a schematic diagram of the local structure of the pad of the present invention;

[0022] Figure 4 A cross-sectional view of the connecting plate, the fixing plate and the square plate of the present invention;

[0023] Figure 5 For the present invention Figure 4 A magnified view of the structure at point A;

[0024] Figure 6 This is a back view showing the backing plate and two pads of the present invention;

[0025] Figure 7 A diagram illustrating the support pillars, concave blocks, and U-shaped grooves of the present invention;

[0026] Figure 8 This is a diagram showing the pad, pad, knife groove, push rod and second inclined block of the present invention.

[0027] In the accompanying drawings, the list of parts represented by each number is as follows: 1. Slider; 2. Machine body; 3. Electric push rod; 4. Woven bag sample; 5. Pad; 6. Clamp; 7. Fixed plate; 8. Cutter; 9. Connecting plate; 10. Threaded pipe; 11. Stud; 12. Pad; 13. U-shaped plate; 14. Knife groove; 15. Square groove; 16. L-shaped rod; 17. First oblique block; 18. Push plate; 19. Guide column; 20. Square block; 21. Pillar; 22. First spring; 23. Square plate; 24. Concave block; 25. Push rod; 26. Groove; 27. Second spring; 28. Connecting column; 29. ​​Third spring; 30. Second oblique block; 31. Fourth spring; 32. Support plate; 33. Splicing column; 34. U-shaped groove. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The present invention provides a technical solution: Figures 1-8The tensile performance testing device for woven bag production shown in the figure includes a body 2 and a slider 1 that is lifted and lowered on the body 2. The lower end of the slider 1 and the upper end of the base of the body 2 are fixedly mounted with a pad 5 through a mounting seat. A pad 12 is fitted between the two pads 5. An elastic mechanism is provided between the lower pad 5 and the pad 12. A pushing mechanism is provided between the upper pad 5 and the pad 12. A woven bag sample 4 is fitted together with the pad 12 and the sides of the two pads 5. A fixing mechanism is provided between the two pads 5 and the woven bag sample 4.

[0030] The fixing mechanism includes pillars 21 symmetrically fixedly connected to the side walls of the pad 5. The outer walls of the two pillars 21 are slidably sleeved with a connecting plate 9. The connecting plate 9 is fixedly connected to the side wall of the pad 5 with a clamping block 6. The woven bag sample 4 is fitted between the clamping block 6 and the pad 5.

[0031] The elastic mechanism includes two support plates 32, which are symmetrically fixedly connected to the upper end of the pad 5 located below, and the side walls of the two support plates 32 are slidably interspersed with multiple splicing columns 33 from top to bottom. One end of each splicing column 33 is fixedly connected to the side wall of the pad 12 away from the woven bag sample 4, and the outer wall of each splicing column 33 is slidably sleeved with a fourth spring 31, and each fourth spring 31 is fixedly connected between the pad 12 and the corresponding support plate 32.

[0032] The pushing mechanism includes two pushing rods 25, which are respectively fixedly connected to the front and rear ends of the pad 5 located above, and the lower ends of the two pushing rods 25 are both fitted with second inclined blocks 30, and the two second inclined blocks 30 are respectively fixedly connected to the upper edges of the front and rear ends of the pad 12.

[0033] The fixing mechanism also includes a fixing plate 7, which is fixedly connected to one end of the two pillars 21 away from the pad 5, and a threaded tube 10 is connected to the middle of the side wall of the fixing plate 7, and the inner wall of the threaded tube 10 is threadedly connected to a stud 11, and the stud 11 is rotatably connected to one end of the connecting plate 9 with a push plate 18, and the side wall of the push plate 18 away from the connecting plate 9 is fitted with the fixing plate 7, and the side wall of the push plate 18 away from the connecting plate 9 is symmetrically fixedly connected with a guide column 19, and the two guide columns 19 are both movable and pass through the fixing plate 7, and a first spring 22 is symmetrically fixedly connected between the fixing plate 7 and the connecting plate 9, and the two first springs 22 are respectively slidably sleeved on the outer walls of the two pillars 21.

[0034] The fixing mechanism also includes two square plates 23, which are respectively slidably mounted on the outer walls of the two pillars 21 near the pad 5, and the side walls of the two square plates 23 away from the pad 5 and the connecting plate 9 are fixedly connected with a second spring 27, and the two second springs 27 are respectively slidably mounted on the outer walls of the two pillars 21, and the side walls of the two square plates 23 close to the pad 5 are fitted with concave blocks 24, and the side walls of the two concave blocks 24 corresponding to the pad 5 are respectively fitted with the front and rear edges of the side of the woven bag sample 4, and the side walls of the two concave blocks 24 corresponding to the pad 5 are respectively fitted with U-shaped grooves 34, and the two U-shaped grooves 34 are respectively slidably matched with the two pillars 21, and elastic mechanisms are respectively provided between the two concave blocks 24 and the two square plates 23.

[0035] The elastic mechanism includes two connecting columns 28, which are symmetrically fixedly connected between the front and rear end surfaces of the inner side of the concave block 24, and both connecting columns 28 are movably inserted into the square plate 23. Third springs 29 are slidably sleeved on the outer walls of the two connecting columns 28, and one end of the two third springs 29 is fixedly connected to the inner rear end surface of the concave block 24, and the other end of the two third springs 29 is fixedly connected to the rear end of the square plate 23.

[0036] The upper ends of the two concave blocks 24 are fixedly connected to the L-shaped rods 16, the side walls of the two L-shaped rods 16 are fixedly connected to the blocks 20, and the upper end of the push plate 18 is symmetrically fixedly connected to the first oblique blocks 17, and the two first oblique blocks 17 correspond to the two blocks 20 respectively.

[0037] Electric push rods 3 are symmetrically fixedly installed at the front and rear edges of the side walls of the body 2. The telescopic rear ends of the four electric push rods 3 are fixedly connected to the U-shaped plates 13. One end of the two U-shaped plates 13 at the front and one end of the two U-shaped plates 13 at the rear are jointly fixedly connected to the cutters 8. The side walls of the pad 5 and the side walls of the pad 12 are symmetrically provided with knife grooves 14. The connecting plate 9 is symmetrically provided with grooves 26 corresponding to the side walls of the pad 5. The two cutters 8 slide in conjunction with the two grooves 26 respectively.

[0038] A square groove 15 is formed in the middle of the upper end of the connecting plate 9 .

[0039] Working principle: The staff can first use a knife to slide and cut the sample on the woven bag to obtain the woven bag sample 4, and keep the woven bag sample 4 in a rectangular shape. The edges of the woven bag sample 4 are not neat or there are burrs, and the length and width of the woven bag sample 4 do not exceed the two pads 5 when placed on the two pads 5. Figure 2As shown, the index finger is then inserted into the square groove 15 on the upper connecting plate 9, and the thumb holds the fixing plate 7, and presses the upper connecting plate 9 toward the fixing plate 7. The upper connecting plate 9 will slide outside the two pillars 21 and squeeze the two first springs 22, and the upper connecting plate 9 will also drive the clamping block 6, the two second springs 27, the two square plates 23, and the two concave blocks 24 to move together. The clamping block 6 and the two concave blocks 24 will move away from the upper pad 5 and form a gap between them. The woven bag sample 4 is then continuously extended from the top of the gap until the upper end of the woven bag sample 4 is close to the upper end of the clamping block 6 located above, and then the upper connecting plate 9 is released. At this time, under the action of the first spring 22, the upper connecting plate 9, the clamping block 6 and the two concave blocks 24 will all be reset, and the clamping block 6 and the two concave blocks 24 can clamp the upper edge of the woven bag sample 4.

[0040] Then, in the same way, press the lower connecting plate 9 toward the fixed plate 7. The lower connecting plate 9, the clamping block 6 and the two concave blocks 24 will all move away from the lower pad 5 and form the same gap, and the first spring 22 below will also be squeezed. Then, extend the lower end of the woven bag sample 4 along the upper part of the gap until the woven bag sample 4 extends out of the lower end of the clamping block 6 below, and then release the lower connecting plate 9. Then, under the action of the first spring 22, the lower clamping block 6 and the two concave blocks 24 can clamp the lower edge of the woven bag sample 4. Since the clamping force on the woven bag sample 4 is applied by the first spring 22, the woven bag sample 4 is initially clamped (the clamping force is moderate), and the position of the woven bag sample 4 can be adjusted so that it is as centered and straightened as possible relative to the two pads 5. Finally, as shown in FIG. Figure 2 shown.

[0041] Then, the upper stud 11 is rotated to move it toward the woven bag sample 4, which will drive the push plate 18 to move together. The push plate 18 will drive the two guide pillars 19 to slide in the fixed plate 7 until the push plate 18 pushes the upper connecting plate 9, so that the upper clamping block 6 tightly clamps the upper edge of the woven bag sample 4, the two first springs 22 connecting the upper connecting plate 9 and the upper fixed plate 7 will also be stretched to a corresponding degree, and the second spring 27 connecting the upper connecting plate 9 and the two square plates 23 will also be squeezed to a corresponding degree, and the two concave blocks 24 at the top will also squeeze the front and rear edges of the woven bag sample 4 to a corresponding degree. Then, the lower stud 11 is rotated. Similarly, the lower clamping block 6 can be tightly clamped to the lower edge of the woven bag sample 4, and the two concave blocks 24 at the bottom will also squeeze the front and rear edges of the woven bag sample 4 to a corresponding degree.

[0042] It should be noted that when each push plate 18 moves close to the connecting plate 9, the two first inclined blocks 17 at the upper end of the push plate 18 will first squeeze the two blocks 20 respectively. Under the action of the squeezing force, each first inclined block 17 will drive the corresponding block 20 to move away from the center of the connecting plate 9, that is, the two concave blocks 24 above will move away from each other, and the two concave blocks 24 below will also move away from each other, and each concave block 24 will slide outside the corresponding two connecting columns 28 and squeeze the corresponding two third springs 29, and the U-shaped groove 34 on each concave block 24 will slide outside the corresponding pillar 21 until each push plate 18 moves to push the corresponding clamping block 6 to tightly squeeze the woven bag sample 4, and the movement state of the four concave blocks 24 at this time can be tightened to a certain extent before the pressed woven bag sample 4 is completely tightened, and the tightening direction is the front and back direction.

[0043] Then start the four electric push rods 3, so that the telescopic axis of each electric push rod 3 is shortened, then the two cutters 8 can be driven by the U-shaped plate 13 to move toward the woven bag sample 4. It should be noted that before the connecting plate 9 is pushed by the push plate 18, the two cutters 8 are moved toward the woven bag sample 4 by a corresponding distance to avoid motion interference between the connecting plate 9 and the two cutters 8. Then, until the two cutters 8 are quickly moved into the corresponding knife grooves 14, the front and rear edges of the woven bag sample 4 can be quickly cut off, and because the woven bag sample 4 has been tightened to a certain extent, Then the woven bag sample 4 can be cut more easily, and such linear straight cutting of the woven bag sample 4 can avoid burrs or unevenness on the front and rear edges of the woven bag sample 4. Then, the two cutters 8 are moved to their corresponding grooves 26 through the four electric push rods 3. Since each concave block 24 is elastically connected to the corresponding connecting plate 9 through the second spring 27, the concave block 24 does not clamp the woven bag sample 4 as firmly as the clamping block 6. Then, the cut parts of the woven bag sample 4 can be dragged in turn to separate the cut parts of the woven bag sample 4.

[0044] Finally, the machine body 2 is started to drive the slider 1 to move upward (how the slider 1 on the machine body 2 moves upward is a well-known existing technology and will not be described in detail). The slider 1 will move upward with the pad 5 and the clamping block 6 above, thereby continuously stretching the woven bag sample 4 until the woven bag sample 4 is broken. At this time, the data displayed on the display screen on the machine body 2 can be observed to detect the tensile performance of the woven bag.

[0045] It should be noted that when the upper pad 5 gradually moves upward and away from the pad 12, the two push rods 25 are also in an upward state. Figure 6, multiple fourth springs 31 are originally in a stretched state, then under the action of the fourth spring 31, the pad 12 will gradually move away from the woven bag sample 4, and will drive multiple splicing columns 33 to slide in the corresponding support plates 32, and the two second inclined blocks 30 will also be driven to move together, and the upper inclined surfaces of the two second inclined blocks 30 will always remain in contact with the lower ends of the two push rods 25 respectively. When the push rods 25 completely leave the second inclined blocks 30, the pad 12 will move away from the woven bag sample 4 to the maximum distance, thereby avoiding the woven bag sample 4 at the front and rear edges being cut off. When the woven bag sample 4 is stretched and tested, the pad 12 contacts the woven bag sample 4 and affects the test results of the woven bag sample 4. When the upper pad 5 moves down and resets, the two push rods 25 will also squeeze the two second oblique blocks 30 respectively, and make the two second oblique blocks 30 move away from the support plate 32, then the pad 12 will also move away from the support plate 32 and stretch the fourth spring 31, and when the upper pad 5 moves down to fit with the upper end of the pad 12, the side of the pad 12 will also move to be flush with the side surfaces of the two pads 5, as shown in FIG. Figure 8 shown.

[0046] It should be noted that a suitable rectangular woven bag sample 4 can be cut out by sliding a cutter on the woven bag. The woven bag sample 4 can then be initially fixed and its position can be preliminarily adjusted so that it is as centered and aligned as possible relative to the two pads 5. The woven bag sample 4 can then be placed in a certain tensioned state and then have the two cutters 8 linearly cut off the front and rear edges to prevent burrs or unevenness on the front and rear edges of the woven bag sample 4, thereby improving the accuracy of the tensile performance test of the woven bag sample 4. Secondly, the cutter 8 is parallel to the pad 5 and the clamp 6. The longitudinal axis of the woven bag sample 4 after the second cut can be as consistent as possible with the center line of the clamp 6, minimizing the decomposition of the tensile force into axial force and lateral force, further improving the accuracy of the tensile performance test of the woven bag sample 4.

[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0048] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A tensile strength testing device for woven bag production, comprising a body (2) and a slider (1) arranged on the body (2) for lifting, characterized in that: The lower end of the slider (1) and the upper end of the base of the machine body (2) are both fixedly mounted with a pad (5) through a mounting seat, a pad (12) is provided between the two pads (5), an elastic mechanism is provided between the pad (5) located at the bottom and the pad (12), a pushing mechanism is provided between the pad (5) located at the top and the pad (12), a woven bag sample (4) is provided on the pad (12) and the sides of the two pads (5), and a fixing mechanism is provided between the two pads (5) and the woven bag sample (4); The fixing mechanism includes pillars (21) symmetrically fixedly connected to the side walls of the cushion block (5), the outer walls of the two pillars (21) are slidably sleeved with a connecting plate (9), the connecting plate (9) is fixedly connected to a clamping block (6) corresponding to the side wall of the cushion block (5), and the woven bag sample (4) is fitted between the clamping block (6) and the cushion block (5); The elastic mechanism includes two support plates (32), the two support plates (32) are symmetrically fixedly connected to the upper end of the pad (5) located below, and the side walls of the two support plates (32) are slidably interspersed with a plurality of splicing columns (33) from top to bottom, one end of each splicing column (33) is fixedly connected to the side wall of the pad (12) away from the woven bag sample (4), and the outer wall of each splicing column (33) is slidably sleeved with a fourth spring (31), and each fourth spring (31) is fixedly connected between the pad (12) and the corresponding support plate (32); The pushing mechanism comprises two pushing rods (25), the two pushing rods (25) being fixedly connected to the front and rear ends of the pad (5) located above, and the lower ends of the two pushing rods (25) are both fitted with second inclined blocks (30), and the two second inclined blocks (30) are fixedly connected to the upper edges of the front and rear ends of the pad (12), respectively. The fixing mechanism also includes a fixing plate (7), the fixing plate (7) is fixedly connected to one end of the two pillars (21) away from the pad (5), and the middle part of the side wall of the fixing plate (7) is connected to a threaded tube (10), the inner wall of the threaded tube (10) is threadedly connected to a stud (11), and the stud (11) is rotatably connected to one end of the corresponding connecting plate (9) with a push plate (18), the side wall of the push plate (18) away from the connecting plate (9) is in contact with the fixing plate (7), and the side wall of the push plate (18) away from the connecting plate (9) is symmetrically fixedly connected to a guide column (19), and the two guide columns (19) are both movable and pass through the fixing plate (7), and a first spring (22) is symmetrically fixedly connected between the fixing plate (7) and the connecting plate (9), and the two first springs (22) are respectively slidably sleeved on the outer walls of the two pillars (21); The fixing mechanism also includes two square plates (23), the two square plates (23) are respectively slidably mounted on the outer walls of the two pillars (21) near the pad (5), and the side walls of the two square plates (23) away from the pad (5) and the connecting plate (9) are fixedly connected with a second spring (27), the two second springs (27) are respectively slidably mounted on the outer walls of the two pillars (21), the side walls of the two square plates (23) near the pad (5) are fitted with concave blocks (24), the side walls of the two concave blocks (24) corresponding to the pad (5) are respectively fitted with the front and rear edges of the side of the woven bag sample (4), and the side walls of the two concave blocks (24) corresponding to the pad (5) are respectively provided with U-shaped grooves (34), the two U-shaped grooves (34) are respectively slidably matched with the two pillars (21), and elastic mechanisms are respectively provided between the two concave blocks (24) and the two square plates (23); The elastic mechanism includes two connecting columns (28), the two connecting columns (28) are symmetrically fixedly connected between the front and rear end surfaces of the inner side of the concave block (24), and the two connecting columns (28) are movable through the square plate (23), and a third spring (29) is slidably sleeved on the outer wall of the two connecting columns (28), one end of the two third springs (29) is fixedly connected to the rear end surface of the inner side of the concave block (24), and the other end of the two third springs (29) is fixedly connected to the rear end of the square plate (23); The upper ends of the two concave blocks (24) are fixedly connected to L-shaped rods (16), the side walls of the two L-shaped rods (16) are fixedly connected to square blocks (20), and the upper end of the push plate (18) is symmetrically fixedly connected to the first inclined block (17), and the two first inclined blocks (17) correspond to the two square blocks (20) respectively.

2. The tensile performance testing device for woven bag production according to claim 1, characterized in that: Electric push rods (3) are symmetrically fixedly installed at the front and rear edges of the side walls of the body (2), and the telescopic rear ends of the four electric push rods (3) are fixedly connected to U-shaped plates (13). One end of the two U-shaped plates (13) located in the front and one end of the two U-shaped plates (13) located in the rear are fixedly connected to cutters (8). The side walls of the pad (5) and the side walls of the pad (12) are symmetrically provided with knife grooves (14), and the connecting plate (9) is symmetrically provided with grooves (26) corresponding to the side walls of the pad (5), and the two cutters (8) are respectively slidably engaged with the two grooves (26).

3. The tensile performance testing device for woven bag production according to claim 1, characterized in that: A square groove (15) is provided in the middle of the upper end of the connecting plate (9).

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