Plastic woven bag stretching test device

Abstract

The invention provides a plastic woven bag tensile testing device which comprises a base station, a vertical plate, two fixing mechanisms, a testing mechanism, a fixing part, a first driving mechanism, a second driving mechanism, an air injection assembly and a controller, and the vertical plate is arranged on the base station; the two fixing mechanisms are horizontally arranged, and one end of one fixing mechanism is connected with the vertical plate; the testing mechanism is arranged between the two fixing mechanisms, and the two ends of the testing mechanism extend into the corresponding fixing mechanisms respectively; the first driving mechanism is installed on the base table, and the extending end of the first driving mechanism extends into the other fixing mechanism. According to the plastic woven bag stretching testing device, testing can be carried out in the radial direction of the plastic woven bag, acting force can be applied to the plastic woven bag in other directions on the basis of the testing, and therefore the effect when the plastic woven bag contains objects is simulated, and the testing result is more representative.

Description

Technical Field

[0001] The present application relates to the technical field of plastic woven bag testing, and in particular to a plastic woven bag tensile testing device. Background Art

[0002] Plastic woven bags are made by weaving the warp and weft of preformed strips of material using specialized weaving machines. After weaving, the bags undergo appropriate finishing processes, such as cutting and sewing, and are then sealed or otherwise processed according to the required bag size and shape. Finally, the finished bags undergo quality inspection. For example, tensile testing verifies that the bags' physical properties, such as tensile strength and elongation, meet production standards, ensuring that the product's quality and performance meet expected requirements.

[0003] Currently, tensile testing of plastic woven bags is typically performed using a tensile testing machine. By wrapping the two ends of the bag around the driving end of the tensile testing machine, the machine applies opposing forces to each end of the bag, and the test results are obtained by observing the changes in the bag's surface. However, this method only tests the bag in the radial direction, resulting in poorly representative test results. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent.

[0005] To this end, one purpose of this application is to propose a plastic woven bag tensile testing device, which can not only perform tests along the radial direction of the plastic woven bag, but also apply forces to the plastic woven bag in other directions on this basis, thereby simulating the effect when the plastic woven bag is filled with items, making the test results more representative.

[0006] To achieve the above-mentioned objectives, the first embodiment of the present application proposes a plastic woven bag tensile testing device, comprising: a base, a vertical plate, two fixing mechanisms, a testing mechanism, a fixing member, a first driving mechanism, a second driving mechanism, an air injection assembly and a controller, wherein the vertical plate is arranged on the base; the two fixing mechanisms are arranged horizontally, and one end of one fixing mechanism is connected to the vertical plate; the testing mechanism is arranged between the two fixing mechanisms, and the two ends of the testing mechanism respectively extend to the interior of the corresponding fixing mechanism; the first driving mechanism is installed on the base, and the protruding end of the first driving mechanism extends to the interior of the other fixing mechanism; the fixing member is arranged between the other fixing mechanism and the first driving mechanism; the second driving mechanism is arranged on the base, and the output end of the second driving mechanism extends to the interior of one fixing mechanism, and the output end of the second driving mechanism is connected to one end of the testing mechanism; the air injection assembly is arranged on the base, and the air outlet end of the air injection assembly is connected to one of the fixing mechanisms; the controller is installed on the base, and the first driving mechanism, the second driving mechanism and the air injection assembly are respectively connected to the controller.

[0007] In addition, the plastic woven bag tensile testing device proposed in the above embodiment of the present application may also have the following additional technical features:

[0008] Furthermore, the fixing mechanism includes a tube body, multiple retaining rings, an auxiliary plate and two clamps, wherein the tube body in one fixing mechanism is connected to the vertical plate, and the tube body in the other fixing mechanism is slidably connected to the testing mechanism; multiple retaining rings and auxiliary plates are respectively arranged on the tube body, and multiple retaining rings are located on both sides of the auxiliary plate; the two clamps are respectively arranged between the corresponding two retaining rings.

[0009] Furthermore, the testing mechanism includes a first rod body, an expansion assembly and a cylinder body, wherein one end of the first rod body extends to the interior of the tube body in one of the fixing mechanisms, and one end of the first rod body is connected to the output end of the second driving mechanism; the expansion assembly is sleeved on the outside of the first rod body, and the expansion assembly is connected to the first rod body; the cylinder body is sleeved on the outside of the first rod body, one end of the cylinder body is rotatably connected to the expansion assembly, and the other end of the cylinder body extends to the interior of the tube body in another of the fixing mechanisms, and the cylinder body is slidably connected to the tube body in the other of the fixing mechanisms.

[0010] Furthermore, the expansion assembly includes two fixed plates, multiple connecting rods, multiple rotating seats and multiple wheel bodies, wherein the two fixed plates are pivotally connected to the corresponding multiple connecting rods, and the multiple connecting rods are pivotally connected to the corresponding rotating seats; the multiple rotating seats are rotationally connected to the corresponding wheel bodies; one fixed plate is fixedly connected to the first rod body, and a guide rail is integrally formed on the first rod body, and the other fixed plate is provided with multiple guide grooves, and the guide grooves are clamped on the outside of the guide rail; the other fixed plate is rotationally connected to the cylinder.

[0011] Furthermore, the first driving mechanism includes a rotating base, a hydraulic rod and a top seat, wherein the rotating base is arranged on the base, the hydraulic rod is installed on the rotating base, and the top seat is movably connected to the output end of the hydraulic rod; one end of the tube body in the other fixing mechanism is a closed structure, and one end of the tube body in the other fixing mechanism is provided with a first through groove, and the first through groove is adapted to the shape of the top seat; a second through groove is provided on the outer side of the tube body in the other fixing mechanism.

[0012] Furthermore, the top seat includes two top plates and two first pressure sensors, wherein the two top plates are connected, and one top plate is movably connected to the output end of the hydraulic rod; the two first pressure sensors are respectively arranged on the corresponding top plates, and the first pressure sensors are connected to the controller.

[0013] Furthermore, the fixing member includes a connecting ring and two hand-screwed rods, wherein the connecting ring is arranged on the outer wall of the tube body in the other fixing mechanism; the two hand-screwed rods are respectively threadedly connected to the connecting ring and the rotating base.

[0014] Furthermore, the second driving mechanism includes a first base, a driving motor and a second rod, wherein the first base is connected to the base; the driving motor is installed on the first base; one end of the second rod is connected to the output shaft of the driving motor, and the other end of the second rod is connected to one end of the first rod.

[0015] Furthermore, the gas injection assembly includes a pump body, an air pipe and a second bearing, wherein the pump body is mounted on the base, one end of the air pipe is connected to the air outlet of the pump body, and the other end of the air pipe is connected to the pipe body in one of the fixing mechanisms; the second bearing is arranged between the pipe body in one of the fixing mechanisms and the first rod body; the other end of the air pipe is located between the retaining ring and the second bearing; one end of the pipe body in one of the fixing mechanisms is provided with a boss, a second pressure sensor is provided on the boss, and the second pressure sensor is connected to the controller.

[0016] Furthermore, an extension tube is sleeved on the outer side of the second rod body, one end of the extension tube is connected to one end of a tube body in the fixing mechanism, a plurality of first bearings are provided between the second rod body and the extension tube, and two support rods are symmetrically provided between the extension tube and the vertical plate.

[0017] Compared with the existing technology, the technical solution provided by the present application has the following beneficial effects: the plastic woven bag tensile testing device of the embodiment of the present application, by sleeve-mounting the plastic woven bag on two fixing mechanisms, the first driving mechanism pulls one fixing mechanism, thereby performing the test along the radial direction of the plastic woven bag, and the second driving mechanism drives the testing mechanism to rotate. The testing mechanism can apply a force to the plastic woven bag along the weft direction, thereby simulating the effect when the plastic woven bag is filled with articles, making the test results more representative. At the same time, during the test process, air is injected into the plastic woven bag, and the test results are obtained by monitoring the sudden change of pressure in the plastic woven bag, making the test results more accurate.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a plastic woven bag tensile testing device according to one embodiment of the present application;

[0021] Figure 2 This is a schematic cross-sectional view of a plastic woven bag tensile testing device according to one embodiment of the present application;

[0022] Figure 3 This is a schematic structural diagram of a fixing mechanism of a plastic woven bag tensile testing device according to one embodiment of the present application;

[0023] Figure 4 This is a schematic diagram of another fixing mechanism structure of a plastic woven bag tensile testing device according to an embodiment of the present application;

[0024] Figure 5 This is a schematic structural diagram of a testing mechanism in a plastic woven bag tensile testing device according to one embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of the connection structure between the second driving mechanism and the testing mechanism of the plastic woven bag tensile testing device according to one embodiment of the present application;

[0026] Figure 7This is a schematic structural diagram of a first driving mechanism of a plastic woven bag tensile testing device according to one embodiment of the present application;

[0027] Figure 8 The figure is a front view structural schematic diagram of a plastic woven bag tensile testing device according to one embodiment of the present application.

[0028] Figure 1: pedestal; 2: vertical plate; 3: fixing mechanism; 31: tube body; 32: retaining ring; 33: clamping hoop; 34: auxiliary plate; 4: testing mechanism; 41: first rod body; 411: guide rail; 42: expansion assembly; 421: fixing plate; 422: connecting rod; 423: rotating seat; 424: wheel body; 425: guide groove; 43: cylinder body; 6: first driving mechanism; 61: rotating base; 62: hydraulic rod; 63: top seat; 631: top Plate; 632, first pressure sensor; 64, first through slot; 65, second through slot; 5, fixing piece; 51, connecting ring; 52, hand screw; 7, second driving mechanism; 71, first base; 72, driving motor; 73, second rod body; 8, gas injection assembly; 81, pump body; 82, air pipe; 83, second bearing; 84, boss; 85, second pressure sensor; 9, controller; 91, extension tube; 92, first bearing; 93, support rod. DETAILED DESCRIPTION

[0029] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0030] The following describes a plastic woven bag tensile testing device according to an embodiment of the present application with reference to the accompanying drawings.

[0031] like Figures 1-8 As shown, the plastic woven bag tensile testing device of an embodiment of the present application may include: a base 1, a vertical plate 2, two fixing mechanisms 3, a testing mechanism 4, a fixing member 5, a first driving mechanism 6, a second driving mechanism 7, an air injection assembly 8 and a controller 9.

[0032] The vertical plate 2 is set on the base 1 , and the two fixing mechanisms 3 are arranged horizontally, with one end of one fixing mechanism 3 connected to the vertical plate 2 .

[0033] The testing mechanism 4 is arranged between the two fixing mechanisms 3 , with both ends of the testing mechanism 4 extending into the interior of the corresponding fixing mechanism 3 . The testing mechanism 4 is used to move along the weft direction of the plastic woven bag and apply force thereto.

[0034] The first driving mechanism 6 is installed on the base 1 , and the protruding end of the first driving mechanism 6 extends into the interior of the other fixing mechanism 3 . The first driving mechanism 6 is used to push the testing mechanism 4 to deform and apply force to the other fixing mechanism 3 .

[0035] The fixing member 5 is arranged between the other fixing mechanism 3 and the first driving mechanism 6. The fixing member 5 is used to connect with the other fixing mechanism 3 when the testing mechanism 4 moves along the weft direction of the plastic woven bag.

[0036] The second driving mechanism 7 is arranged on the base 1 , and the output end of the second driving mechanism 7 extends to the inside of a fixing mechanism 3 . The output end of the second driving mechanism 7 is connected to one end of the testing mechanism 4 . The second driving mechanism 7 is used to drive the testing mechanism 4 to rotate.

[0037] The gas injection component 8 is set on the base 1, and the gas outlet end of the gas injection component 8 is connected to a fixing mechanism 3. The gas injection component 8 is used to inject air into the interior of the plastic woven bag during the test and monitor the air pressure value inside the plastic woven bag.

[0038] The controller 9 is installed on the base 1 , and the first driving mechanism 6 , the second driving mechanism 7 and the gas injection assembly 8 are respectively connected to the controller 9 .

[0039] Specifically, in the initial state, the output end of the first driving mechanism 6 is placed outside the tube body 31 in the other fixing mechanism 3, so that relevant technicians can place the plastic woven bag to be tested on the device conveniently.

[0040] The relevant technicians took a test plastic woven bag, cut the bottom end of the plastic woven bag so that both ends of the plastic woven bag were open, and then put the plastic woven bag on the outside of the test mechanism 4, and respectively put the two ends of the plastic woven bag on the two fixing mechanisms 3.

[0041] A first instruction is sent to the controller 9 through an external remote control device, and the first drive mechanism 6 starts to operate. The first drive mechanism 6 first runs to a position opposite to the other fixing mechanism 3 (this working condition can be obtained by an angle sensor), and then the output end of the first drive mechanism 6 extends to the inside of the tube body 31 in the other fixing mechanism 3. Relevant technicians adjust the output end of the first drive mechanism 6 so that the first drive mechanism 6 will not separate from the inside of the tube body 31 in the other fixing mechanism 3 when it retracts.

[0042] A second instruction is sent to the controller 9 through an external remote control device, the first drive mechanism 6 continues to operate, the output end of the first drive mechanism 6 retracts, and the first drive mechanism 6 pulls the other fixing mechanism 3 away from the one fixing mechanism 3, thereby applying a preset tension in the warp direction of the plastic woven bag. At the same time, the gas injection component 8 injects gas of a preset pressure into the interior of the plastic woven bag. If the gas pressure inside the plastic woven bag drops sharply during the test, or the surface of the plastic woven bag is broken, it indicates that the plastic woven bag is a defective product and does not meet the technical requirements.

[0043] If during the test, the instantaneous change in the gas pressure inside the plastic woven bag is small, or there is no breakage on its surface, continue to test the plastic woven bag.

[0044] Maintain the force on the plastic woven bag along the warp direction, use the fixing part 5 to limit the other fixing mechanism 3, send a third instruction to the controller 9 through the external remote control device, the output end of the first driving mechanism 6 extends, the first driving mechanism 6 pushes the testing mechanism 4 to deform, and the testing mechanism 4 applies a vertical preset force to the plastic woven bag (the force can be determined according to actual conditions), and then the second driving mechanism 7 runs, and the second driving mechanism 7 drives the testing mechanism 4 to rotate, and the testing mechanism 4 rotates along the weft direction of the plastic woven bag, thereby simulating the effect when the plastic woven bag is filled with items, making the test results more representative.

[0045] At the same time, the gas injection component 8 injects gas of preset pressure into the interior of the plastic woven bag again. If the gas pressure inside the plastic woven bag drops sharply during the test, or the surface of the plastic woven bag is broken, it indicates that the plastic woven bag is a defective product and does not meet the technical requirements.

[0046] If the instantaneous change in the gas pressure inside the plastic woven bag is small during the test, or there is no breakage on its surface, it means that the plastic woven bag has passed the tensile test and meets the technical requirements.

[0047] Finally, the relevant technician sends a fourth instruction to the controller 9 , the first driving mechanism 6 is reset, and the relevant technician releases the plastic woven bag that is sleeved on the fixing mechanism 3 .

[0048] It should be noted that the air permeability of plastic woven bags depends on the material and weaving density. Among them, the material of plastic woven bags is usually made of polypropylene (PP) or polyethylene (PE), which are inherently impermeable. The denser the warp and weft of the plastic woven bag, the worse the air permeability, which is suitable for moisture-proof packaging; the looser the weaving, the better the air permeability, which is suitable for products that require ventilation, such as agricultural products.

[0049] Although the air permeability of plastic woven bags can be controlled by adjusting the weaving density, the overall air permeability is limited. During the tensile test, the air pressure inside the plastic bag can still be monitored by air injection.

[0050] The test results are obtained by monitoring the sudden changes in pressure inside the plastic woven bag, making the test results more accurate.

[0051] In one embodiment of the present application, Figure 2 and Figure 3 As shown, the fixing mechanism 3 includes a tube body 31 , a plurality of retaining rings 32 , an auxiliary plate 34 and two hoops 33 .

[0052] Among them, the tube body 31 in one fixing mechanism 3 is connected to the vertical plate 2, and the tube body 31 in the other fixing mechanism 3 is slidingly connected to the testing mechanism 4. Multiple retaining rings 32 and auxiliary plates 34 are respectively arranged on the tube body 31, and multiple retaining rings 32 are located on both sides of the auxiliary plate 34. Two clamps 33 are respectively arranged between the corresponding two retaining rings 32.

[0053] Specifically, when the relevant technicians put the two ends of the plastic woven bag on the fixing mechanism 3, first, one end of the plastic woven bag is placed between the two retaining rings 32 on one side of the auxiliary plate 34, and then fixed with a clamp 33, and then another clamp 33 is used to fix the plastic woven bag between the other two retaining rings 32, and the auxiliary plate 34 is wrapped inside the plastic woven bag.

[0054] When both ends of the plastic woven bag are subjected to tension, the auxiliary plates 34 can optimize the fixing effect, thereby preventing the plastic woven bag from being separated from the fixing mechanism 3 during the test.

[0055] In one embodiment of the present application, Figure 1 and Figure 2 As shown, the testing mechanism 4 includes a first rod 41 , an expansion assembly 42 and a cylinder 43 .

[0056] Among them, one end of the first rod body 41 extends to the inside of the tube body 31 in a fixing mechanism 3, one end of the first rod body 41 is connected to the output end of the second driving mechanism 7, and the expansion component 42 is sleeved on the outside of the first rod body 41, and the expansion component 42 is connected to the first rod body 41.

[0057] The cylinder 43 is sleeved on the outside of the first rod 41, one end of the cylinder 43 is rotatably connected to the expansion assembly 42, and the other end of the cylinder 43 extends into the inside of the tube 31 in the other fixing mechanism 3, and the cylinder 43 is slidably connected to the tube 31 in the other fixing mechanism 3.

[0058] In one embodiment of the present application, Figure 1 、 Figure 2 and Figure 5 As shown, the expansion assembly 42 includes two fixed plates 421 , a plurality of connecting rods 422 , a plurality of rotating seats 423 and a plurality of wheels 424 .

[0059] Among them, the two fixed plates 421 are pivotally connected to the corresponding multiple connecting rods 422, the multiple connecting rods 422 are pivotally connected to the corresponding rotating seats 423, the multiple rotating seats 423 are rotatably connected to the corresponding wheel bodies 424, one fixed plate 421 is fixedly connected to the first rod body 41, and the first rod body 41 is integrally formed with a guide rail 411, and the other fixed plate 421 is provided with multiple guide grooves 425, which are clamped on the outside of the guide rail 411, and the other fixed plate 421 is rotatably connected to the cylinder 43.

[0060] Specifically, when the output end of the first driving mechanism 6 pushes the testing mechanism 4 to deform, first, the output end of the first driving mechanism 6 pushes the cylinder 43 to move, and the cylinder 43 is slidingly connected to the tube body 31 in another fixing mechanism 3. One end of the cylinder 43 pushes a fixed plate 421, and the fixed plate 421 moves along the guide rail 411. The fixed plate 421 pushes the connecting rod 422 to rotate, so that the distance between the multiple wheels 424 increases.

[0061] Multiple wheel bodies 424 are in contact with the inner wall of the plastic woven bag and apply a certain force to the plastic woven bag. The second driving mechanism 7 drives the first rod body 41 to rotate, and the first rod body 41 drives the expansion assembly 42 to rotate, so that the device can perform tensile testing on the plastic woven bag along the weft direction on the basis of the warp test.

[0062] In one embodiment of the present application, Figure 2 、 Figure 4 and Figure 7 As shown, the first driving mechanism 6 includes a rotating base 61 , a hydraulic rod 62 and a top seat 63 .

[0063] The rotating base 61 is arranged on the base 1 , the hydraulic rod 62 is installed on the rotating base 61 , and the top seat 63 is movably connected to the output end of the hydraulic rod 62 .

[0064] It should be noted that the top seat 63 described in this embodiment is movably connected to the output end of the hydraulic rod 62, and the top seat 63 and the output end of the hydraulic rod 62 are pivotally connected, and can rotate 90 degrees between them.

[0065] One end of the tube body 31 in the other fixing mechanism 3 is a closed structure, and a first through groove 64 is opened at one end of the tube body 31 in the other fixing mechanism 3. The first through groove 64 is adapted to the shape of the top seat 63, and a second through groove 65 is opened on the outer side of the tube body 31 in the other fixing mechanism 3.

[0066] It should be noted that the specific structure of the rotating base 61 described in this embodiment has been disclosed in the prior art and will not be described in detail here. The rotation angle of the rotating base 61 can be measured by an angle sensor.

[0067] It should be noted that the shapes of the first through-slot 64 and the top seat 63 are adapted to each other. For example, the shapes of the first through-slot 64 and the top seat 63 are straight slots, and the top seat 63 can pass through the first through-slot 64 .

[0068] In one embodiment of the present application, Figure 2 、 Figure 4 and Figure 7 As shown, the top seat 63 includes two top plates 631 and two first pressure sensors 632 .

[0069] Among them, the two top plates 631 are connected, one top plate 631 is movably connected to the output end of the hydraulic rod 62, and the two first pressure sensors 632 are respectively arranged on the corresponding top plates 631, and the first pressure sensors 632 are connected to the controller 9.

[0070] Specifically, after the relevant technicians put the plastic woven bag on the two fixing mechanisms 3, the rotating base 61 drives the hydraulic rod 62 to rotate a preset angle, so that the output end of the hydraulic rod 62 is opposite to the fixing mechanism 3, and then the output end of the hydraulic rod 62 pushes the top seat 63 through the first through slot 64. After that, the hydraulic rod 62 stops running, and the relevant technicians rotate the top seat 63 through the second through slot 65. The top seat 63 is perpendicular to the first through slot 64, and the top seat 63 is placed in the tube body 31 in the other fixing mechanism 3.

[0071] When the hydraulic rod 62 operates again, the top seat 63 acts on the tube body 31 or the cylinder 43 in the other fixing mechanism 3, and the first pressure sensor 632 can detect this force, so that the device can apply a preset force to the plastic woven bag for testing.

[0072] In one embodiment of the present application, Figure 1 and Figure 7 As shown, the fixing member 5 includes a connecting ring 51 and two hand-screwed screws 52 .

[0073] The connecting ring 51 is provided on the outer wall of the tube body 31 in the other fixing mechanism 3 , and the two hand-screwed screws 52 are respectively threadedly connected to the connecting ring 51 and the rotating base 61 .

[0074] Specifically, when the device tests the plastic woven bag along its warp direction, the hand-screw 52 is not in contact with the connecting ring 51. After the test is completed, the hand-screw 52 is threadedly connected to the connecting ring 51, and then the first drive mechanism 6 drives the testing mechanism 4 to act on the plastic woven bag, so that the device can test along its weft direction on the basis of testing along the warp direction of the plastic woven bag, thereby simulating the state of the items contained, making the test results more representative.

[0075] In one embodiment of the present application, Figure 1 、 Figure 2 and Figure 6 As shown, the second driving mechanism 7 includes a first base 71 , a driving motor 72 and a second rod 73 .

[0076] The first base 71 is connected to the base 1 , the drive motor 72 is installed on the first base 71 , one end of the second rod 73 is connected to the output shaft of the drive motor 72 , and the other end of the second rod 73 is connected to one end of the first rod 41 .

[0077] In one embodiment of the present application, Figure 1 and Figure 2 As shown, an extension tube 91 is provided on the outer side of the second rod body 73, one end of the extension tube 91 is connected to one end of a tube body 31 in a fixing mechanism 3, a plurality of first bearings 92 are provided between the second rod body 73 and the extension tube 91, and two support rods 93 are symmetrically provided between the extension tube 91 and the vertical plate 2.

[0078] Specifically, during the operation of the second driving mechanism 7 , the driving motor 72 drives the second rod 73 to rotate, and the second rod 73 drives the testing mechanism 4 to rotate.

[0079] It is understandable that the extension tube 91, the support rod 93 and the first bearing 92 all serve as supporting connections, thereby ensuring the stability of the device during operation and extending the service life of the device.

[0080] In one embodiment of the present application, Figure 2 As shown, the gas injection assembly 8 includes a pump body 81 , an air pipe 82 and a second bearing 83 .

[0081] Among them, the pump body 81 is installed on the base 1, one end of the air pipe 82 is connected to the air outlet of the pump body 81, and the other end of the air pipe 82 is connected to the tube body 31 in a fixing mechanism 3, and the second bearing 83 is arranged between the tube body 31 in a fixing mechanism 3 and the first rod body 41.

[0082] It should be noted that the second bearing 83 described in this embodiment can be a sealed bearing, which has a certain air tightness to ensure that after the pump body 81 injects gas into the interior of the tube body 31, the gas flows out toward the other end of the tube body 31.

[0083] The other end of the air pipe 82 is located between the retaining ring 32 and the second bearing 83 . A boss 84 is provided at one end of the tube body 31 in a fixing mechanism 3 . A second pressure sensor 85 is provided on the boss 84 . The second pressure sensor 85 is connected to the controller 9 .

[0084] Specifically, during the operation of the gas injection assembly 8, the pump body 81 injects gas into the interior of the tube body 31 through the air pipe 82, and then the gas flows into the interior of the plastic woven bag. The second pressure sensor 85 can monitor the air pressure value in the plastic woven bag.

[0085] In summary, the plastic woven bag tensile testing device of the embodiment of the present application is a device that connects the plastic woven bag to two fixing mechanisms, and the first driving mechanism pulls one fixing mechanism to perform testing along the radial direction of the plastic woven bag. The second driving mechanism drives the testing mechanism to rotate, and the testing mechanism can apply force to the plastic woven bag along the weft direction, thereby simulating the effect when the plastic woven bag is filled with articles, making the test results more representative. At the same time, air is injected into the plastic woven bag during the test, and the test results are obtained by monitoring the sudden change of pressure in the plastic woven bag, making the test results more accurate.

[0086] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0087] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0088] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present application.

Claims

1. A plastic woven bag tensile testing device, characterized in that: include: A base, a riser, two fixing mechanisms, a testing mechanism, a fixing member, a first driving mechanism, a second driving mechanism, a gas injection assembly and a controller, wherein: The vertical plate is arranged on the base; The two fixing mechanisms are arranged horizontally, and one end of one fixing mechanism is connected to the vertical plate; The testing mechanism is arranged between the two fixing mechanisms, and both ends of the testing mechanism extend into the interior of the corresponding fixing mechanism respectively; The first driving mechanism is mounted on the base, and the protruding end of the first driving mechanism extends into the interior of the other fixing mechanism; The fixing member is arranged between the other fixing mechanism and the first driving mechanism; The second driving mechanism is arranged on the base, the output end of the second driving mechanism extends into the interior of one of the fixing mechanisms, and the output end of the second driving mechanism is connected to one end of the testing mechanism; The gas injection component is arranged on the base, and the gas outlet end of the gas injection component is connected to one of the fixing mechanisms; The controller is mounted on the base, and the first driving mechanism, the second driving mechanism and the gas injection assembly are respectively connected to the controller.

2. The plastic woven bag tensile testing device according to claim 1, characterized in that: The fixing mechanism includes a tube body, a plurality of retaining rings, an auxiliary plate and two clamps, wherein: The tube body in one of the fixing mechanisms is connected to the vertical plate, and the tube body in the other fixing mechanism is slidably connected to the testing mechanism; The plurality of retaining rings and the auxiliary plates are respectively arranged on the tube body, and the plurality of retaining rings are located on both sides of the auxiliary plates; The two hoops are respectively arranged between the corresponding two retaining rings.

3. The plastic woven bag tensile testing device according to claim 2, characterized in that: The testing mechanism includes a first rod, an expansion assembly and a cylinder, wherein: One end of the first rod extends into the interior of a tube in the fixing mechanism, and one end of the first rod is connected to the output end of the second driving mechanism; The expansion assembly is sleeved on the outside of the first rod, and the expansion assembly is connected to the first rod; The cylinder is sleeved on the outside of the first rod, one end of the cylinder is rotatably connected to the expansion assembly, the other end of the cylinder extends into the inside of the tube in the other fixing mechanism, and the cylinder is slidably connected to the tube in the other fixing mechanism.

4. The plastic woven bag tensile testing device according to claim 3, characterized in that: The expansion assembly includes two fixed plates, multiple connecting rods, multiple rotating seats and multiple wheels, wherein: The two fixing plates are respectively pivotally connected to the corresponding plurality of connecting rods, and the plurality of connecting rods are respectively pivotally connected to the corresponding rotating seats; The plurality of rotating seats are rotatably connected to the corresponding wheel bodies respectively; One of the fixing plates is fixedly connected to the first rod body, a guide rail is integrally formed on the first rod body, and the other fixing plate is provided with a plurality of guide grooves, which are clamped on the outer side of the guide rail; The other fixed plate is rotatably connected to the cylinder.

5. The plastic woven bag tensile testing device according to claim 1, characterized in that: The first driving mechanism includes a rotating base, a hydraulic rod and a top seat, wherein: The rotating base is arranged on the base, the hydraulic rod is mounted on the rotating base, and the top seat is movably connected to the output end of the hydraulic rod; One end of the tube body in the other fixing mechanism is a closed structure, and one end of the tube body in the other fixing mechanism is provided with a first through slot, and the first through slot is adapted to the shape of the top seat; A second through groove is formed on the outer side of the tube body in the other fixing mechanism.

6. The plastic woven bag tensile testing device according to claim 5, characterized in that: The top seat includes two top plates and two first pressure sensors, wherein: The two top plates are connected, and one top plate is movably connected to the output end of the hydraulic rod; The two first pressure sensors are respectively arranged on the corresponding top plates, and the first pressure sensors are connected to the controller.

7. The plastic woven bag tensile testing device according to claim 5, characterized in that: The fixing member includes a connecting ring and two hand-screwed screws, wherein: The connecting ring is arranged on the outer wall of the tube body in the other fixing mechanism; The two hand-screw rods are respectively threadedly connected to the connecting ring and the rotating base.

8. The plastic woven bag tensile testing device according to claim 3, characterized in that: The second driving mechanism includes a first base, a driving motor and a second rod, wherein: The first base is connected to the base; The driving motor is mounted on the first base; One end of the second rod is connected to the output shaft of the driving motor, and the other end of the second rod is connected to one end of the first rod.

9. The plastic woven bag tensile testing device according to claim 3, characterized in that: The gas injection assembly includes a pump body, an air pipe and a second bearing, wherein: The pump body is mounted on the base, one end of the air pipe is connected to the air outlet of the pump body, and the other end of the air pipe is connected to a pipe body in the fixing mechanism; The second bearing is arranged between a tube body and the first rod body in one of the fixing mechanisms; The other end of the air pipe is located between the retaining ring and the second bearing; One end of the tube body in one of the fixing mechanisms is provided with a boss, a second pressure sensor is provided on the boss, and the second pressure sensor is connected to the controller.

10. The plastic woven bag tensile testing device according to claim 8, characterized in that: An extension tube is sleeved on the outer side of the second rod body, one end of the extension tube is connected to one end of a tube body in the fixing mechanism, a plurality of first bearings are provided between the second rod body and the extension tube, and two support rods are symmetrically provided between the extension tube and the vertical plate.

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