Static stretching test equipment for production of transparent polypropylene packaging bag

Abstract

The utility model relates to the technical field of packaging bag production, and discloses static stretching test equipment for polypropylene transparent packaging bag production, which comprises a base, a side vertical plate fixedly connected to the top of the base, a top plate fixedly connected to the top of the side vertical plate, a lifting component mounted on the top plate, and a hook component mounted at the bottom of the lifting component. Supporting assemblies are installed on the inner sides of the side vertical plates. By arranging the lifting assembly, the hook assembly and the supporting assembly, a hydraulic cylinder drives a hydraulic rod to move upwards, so that the fixing frame drives the hook assembly to move upwards, a hook body generates upward pulling force on a handle of a packaging bag, and the pulling force borne by the packaging bag can be judged through a pulling force sensor; the tensile force is the downward gravity generated by the installation assembly and the simulation assembly on the packaging bag and the external tensile force on the lifting handle, and the loading capacity and the tensile resistance capacity in the actual use process can be better.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag production technology, and more specifically, to a static tensile testing device for the production of polypropylene transparent packaging bags. Background Technology

[0002] The existing method for testing the tensile strength of polypropylene transparent packaging bags is usually to use a tensile testing machine, also known as a material tensile testing machine or a universal tensile strength testing machine. It is a new generation of mechanical testing equipment that integrates computer control, automatic measurement, data acquisition, screen display, and test result processing.

[0003] A search revealed that utility model patent CN 221124037 U discloses a static tensile testing device for the production of polypropylene transparent packaging bags. This utility model utilizes rubber material on the outer surfaces of the movable slider and clamping block body, preventing damage to the surface of the polypropylene transparent packaging bag and ensuring the accuracy of the static tensile testing device. The two clamping blocks are engaged within the elongated block cavity, connecting the extended block and clamping block body into a single unit. This facilitates the complete clamping of large-sized polypropylene transparent packaging bags, resulting in more accurate test results from the static tensile testing device.

[0004] The aforementioned patent uses external clamping to secure the packaging bag before conducting a tensile test. However, in actual use, the packaging bag primarily bears the weight and pressure of the contents. External clamping tests cannot accurately simulate this situation, and therefore the test results may not reflect the true mechanical state the packaging bag experiences in real-world use. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a static tensile testing device for the production of polypropylene transparent packaging bags.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a static tensile testing device for the production of polypropylene transparent packaging bags, comprising a base, a side plate fixedly connected to the top of the base, a top plate fixedly connected to the top of the side plate, a lifting assembly mounted on the top plate, a hook assembly mounted at the bottom of the lifting assembly, a support assembly mounted on the inner side of the side plate, the lifting assembly including a hydraulic cylinder fixedly connected to the top of the top plate, a tension sensor fixedly connected to the bottom of the hydraulic rod of the hydraulic cylinder, a fixing frame fixedly connected to the bottom of the tension sensor, the support assembly including a mounting plate fixedly connected to the back of the side plate, a support plate fixedly connected to the front of the mounting plate, a fixing rod fixedly connected to the bottom of the support plate, an installation assembly mounted at the bottom of the fixing rod, and a simulated object assembly mounted on the side of the installation assembly.

[0007] As a preferred technical solution of this utility model, the hook assembly includes a lifting plate fixedly connected to the bottom of the fixed frame, a threaded tube fixedly connected to the middle of the top of the lifting plate, a threaded post threadedly sleeved on the inner side of the threaded tube, a handle block fixedly connected to the top of the threaded post, a lifting frame movably connected to the bottom of the threaded post, and connecting plates installed on both sides of the lifting frame.

[0008] As a preferred embodiment of this utility model, a support plate is fixedly connected to both sides of the bottom of the lifting plate, a long strip plate is fixedly connected to the bottom of the inner side of the support plate, a sliding frame is slidably sleeved on the outer side of the long strip plate, and a hook body is fixedly connected to the bottom of the sliding frame.

[0009] As a preferred embodiment of this utility model, a first connecting groove is provided on both sides of the lifting frame, a first connecting rod is fixedly connected to the inner side of the first connecting groove, and the first connecting rod is movably sleeved with one end of the connecting plate. A second connecting groove is provided on the top of the sliding frame, a second connecting rod is fixedly connected to the inner side of the second connecting groove, and the second connecting rod is movably sleeved with the other end of the connecting plate.

[0010] As a preferred embodiment of this utility model, a rectangular hole is provided on the side of the sliding frame, and rollers are movably sleeved on the top and bottom of the inner wall of the rectangular hole.

[0011] As a preferred technical solution of this utility model, the installation component includes a first cylindrical block fixedly connected to the bottom of the fixing rod, and a first threaded groove is provided on both sides of the first cylindrical block. A first silicone sleeve is fixedly sleeved on the outer side of the first cylindrical block.

[0012] As a preferred technical solution of this utility model, the anthropomorphic component includes a second cylindrical block, a second threaded groove is provided on one side of the second cylindrical block, a threaded connector is fixedly connected to the other end of the second cylindrical block, and a second silicone sleeve is fixedly sleeved on the outer side of the second cylindrical block.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, by comprising a lifting component, a hook component, and a support component, allows the packaging bag to be placed over the outside of the mounting component and the simulated object component. The two handles of the packaging bag are then hung on the hook body. A hydraulic cylinder drives the hydraulic rod to move upward, thereby moving the hook component upward through the fixed frame. Subsequently, the hook body generates an upward pulling force on the handles of the packaging bag. The mounting component and the simulated object component are used to simulate the items usually loaded in the packaging bag. A tension sensor can determine the tension on the packaging bag. The magnitude of the tension is the downward gravity generated by the mounting component and the simulated object component on the packaging bag, as well as the external pulling force on the handles. The equipment has good performance and can better load and tensile strength in actual use.

[0015] 2. This utility model features a hook assembly. The handle block drives the threaded column to rotate. Under the threaded thrust of the threaded tube and the threaded column, the threaded column drives the lifting frame to rise and fall. When the lifting frame falls, the connecting plate pushes the sliding frame to move away from each other. When the lifting frame rises, the connecting plate drives the two sliding frames to move closer to each other, thereby adjusting the distance between the two hook bodies and enabling the stretching of packaging bags of different sizes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the lifting component structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the hook assembly structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the sliding frame structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the support component structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the biomimetic component of this utility model.

[0022] In the diagram: 1. Base; 101. Side plate; 102. Top plate; 2. Lifting assembly; 201. Hydraulic cylinder; 202. Tension sensor; 203. Fixing frame; 3. Hook assembly; 301. Lifting plate; 311. Support plate; 302. Threaded pipe; 303. Threaded column; 304. Handle block; 305. Lifting frame; 351. First connecting groove; 352. First connecting rod; 306. Connecting plate; 307. Long strip plate; 308. Sliding frame; 381 382. Second connecting groove; 383. Second connecting rod; 384. Rectangular hole; 385. Roller; 306. Hook body; 4. Support assembly; 407. Mounting plate; 408. Support plate; 409. Fixing rod; 400. Mounting assembly; 401. First cylindrical block; 402. First threaded groove; 443. First silicone sleeve; 405. Realistic component; 451. Second cylindrical block; 452. Second threaded groove; 453. Second silicone sleeve; 454. Threaded connector. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1 to 6 As shown, this utility model provides a static tensile testing device for the production of polypropylene transparent packaging bags, including a base 1, a side plate 101 fixedly connected to the top of the base 1, a top plate 102 fixedly connected to the top of the side plate 101, a lifting assembly 2 installed on the top plate 102, a hook assembly 3 installed at the bottom of the lifting assembly 2, and a support assembly 4 installed on the inner side of the side plate 101. The lifting assembly 2 includes a hydraulic cylinder 201 fixedly connected to the top of the top plate 102, a tension sensor 202 fixedly connected to the bottom of the hydraulic rod of the hydraulic cylinder 201, and a fixing frame 203 fixedly connected to the bottom of the tension sensor 202. The support assembly 4 includes a mounting plate 401 fixedly connected to the back of the side plate 101, a support plate 402 fixedly connected to the front of the mounting plate 401, a fixing rod 403 fixedly connected to the bottom of the support plate 402, an installation assembly 404 installed at the bottom of the fixing rod 403, and a simulated object assembly 405 installed on the side of the installation assembly 404.

[0025] In this embodiment, before testing, the packaging bag is placed over the outside of the mounting component 404 and the simulated object component 405, and the two handles of the packaging bag are hung on the hook body 309. The hydraulic cylinder 201 drives the hydraulic rod to move upward, thereby driving the hook component 3 to move upward through the fixed frame 203. Then, the hook body 309 generates an upward pulling force on the handle of the packaging bag. The mounting component 404 and the simulated object component 405 are used to simulate the items that are usually loaded in the packaging bag. The tension sensor 202 can determine the tension on the packaging bag. The magnitude of the tension is the downward gravity generated by the mounting component 404 and the simulated object component 405 on the packaging bag and the external pulling force on the handle. The equipment has a good performance and can better load and tensile strength in actual use.

[0026] The hook assembly 3 includes a lifting plate 301 fixedly connected to the bottom of the fixed frame 203. A threaded tube 302 is fixedly connected to the middle of the top of the lifting plate 301. A threaded post 303 is threadedly sleeved on the inner side of the threaded tube 302. A handle block 304 is fixedly connected to the top of the threaded post 303. A lifting frame 305 is movably connected to the bottom of the threaded post 303. Connecting plates 306 are installed on both sides of the lifting frame 305. Support plates 311 are fixedly connected to both sides of the bottom of the lifting plate 301. A long strip plate 307 is fixedly connected to the bottom inner side of the support plate 311. A sliding frame 308 is slidably sleeved on the outer side of the long strip 307. A hook body 309 is fixedly connected to the bottom of the sliding frame 308. A first connecting groove 351 is provided on both sides of the lifting frame 305. A first connecting rod 352 is fixedly connected to the inner side of the first connecting groove 351. The first connecting rod 352 is movably sleeved with one end of the connecting plate 306. A second connecting groove 381 is provided on the top of the sliding frame 308. A second connecting rod 382 is fixedly connected to the inner side of the second connecting groove 381. The second connecting rod 382 is movably sleeved with the other end of the connecting plate 306.

[0027] By rotating the threaded column 303 driven by the handle block 304, the threaded column 303 drives the lifting frame 305 to rise and fall under the threaded thrust of the threaded tube 302 and the threaded column 303. When the lifting frame 305 falls, the connecting plate 306 pushes the sliding frame 308 to move away from each other. When the lifting frame 305 rises, the connecting plate 306 drives the two sliding frames 308 to move closer to each other, thereby adjusting the distance between the two hook bodies 309, so as to stretch packaging bags of different sizes.

[0028] The sliding frame 308 has a rectangular hole 383 on its side, and rollers 384 are movably fitted on the top and bottom of the inner wall of the rectangular hole 383.

[0029] The rectangular hole 383 is compatible with the long strip 307. When the sliding frame 308 moves, the roller 384 rolls against the surface of the long strip 307, making the sliding frame 308 move more smoothly and less prone to jamming.

[0030] The mounting component 404 includes a first cylindrical block 441 fixedly connected to the bottom of the fixing rod 403. The first cylindrical block 441 has a first threaded groove 442 on both sides. A first silicone sleeve 443 is fixedly sleeved on the outer side of the first cylindrical block 441. The anthropomorphic component 405 includes a second cylindrical block 451. A second threaded groove 452 is opened on one side of the second cylindrical block 451. A threaded connector 454 is fixedly connected to the other end of the second cylindrical block 451. A second silicone sleeve 453 is fixedly sleeved on the outer side of the second cylindrical block 451.

[0031] The figurative component 405 has a detachable structure. The threaded connector 454 is compatible with the first threaded groove 442 and the second threaded groove 452, enabling the threaded installation and removal of the figurative component 405. This allows for testing of packaging bags of different sizes. The first silicone sleeve 443 and the second silicone sleeve 453 provide protection, preventing the sharp edges of the installation component 404 or the figurative component 405 from tearing the packaging bag during testing.

[0032] Working principle and usage process of this utility model:

[0033] Before testing, the packaging bag is placed over the outside of the mounting component 404 and the simulated object component 405, and the two handles of the packaging bag are hung on the hook body 309. The hydraulic cylinder 201 drives the hydraulic rod to move upward, which in turn drives the hook component 3 to move upward through the fixed frame 203. Then, the hook body 309 generates an upward pulling force on the handle of the packaging bag. The mounting component 404 and the simulated object component 405 are used to simulate the items that are usually loaded in the packaging bag. The tension sensor 202 can determine the tension on the packaging bag. The magnitude of the tension is the downward gravity generated by the mounting component 404 and the simulated object component 405 on the packaging bag and the external pulling force on the handle. The equipment has good performance and can better load and tensile strength in actual use.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A static tensile testing device for the production of transparent polypropylene packaging bags, comprising a base (1), characterized in that: A side plate (101) is fixedly connected to the top of the base (1), and a top plate (102) is fixedly connected to the top of the side plate (101). A lifting assembly (2) is installed on the top plate (102), and a hook assembly (3) is installed at the bottom of the lifting assembly (2). A support assembly (4) is installed on the inner side of the side plate (101). The lifting assembly (2) includes a hydraulic cylinder (201) fixedly connected to the top of the top plate (102), and a tension transmitter is fixedly connected to the bottom of the hydraulic rod of the hydraulic cylinder (201). The tension sensor (202) has a fixed frame (203) fixedly connected to its bottom. The support assembly (4) includes a mounting plate (401) fixedly connected to the back of the side plate (101). A support plate (402) is fixedly connected to the front of the mounting plate (401). A fixing rod (403) is fixedly connected to the bottom of the support plate (402). An installation assembly (404) is installed at the bottom of the fixing rod (403). A figurative assembly (405) is installed on the side of the installation assembly (404).

2. The static tensile testing equipment for the production of polypropylene transparent packaging bags according to claim 1, characterized in that: The hook assembly (3) includes a lifting plate (301) fixedly connected to the bottom of the fixed frame (203). A threaded tube (302) is fixedly connected to the middle of the top of the lifting plate (301). A threaded post (303) is threadedly sleeved on the inner side of the threaded tube (302). A handle block (304) is fixedly connected to the top of the threaded post (303). A lifting frame (305) is movably connected to the bottom of the threaded post (303). A connecting plate (306) is installed on both sides of the lifting frame (305).

3. The static tensile testing equipment for the production of polypropylene transparent packaging bags according to claim 2, characterized in that: The lifting plate (301) has a support plate (311) fixedly connected to both sides of its bottom. The bottom of the inner side of the support plate (311) is fixedly connected to a long strip plate (307). The outer side of the long strip plate (307) is slidably fitted with a sliding frame (308). The bottom of the sliding frame (308) is fixedly connected to a hook body (309).

4. The static tensile testing equipment for the production of polypropylene transparent packaging bags according to claim 3, characterized in that: The lifting frame (305) has a first connecting groove (351) on both sides. A first connecting rod (352) is fixedly connected to the inner side of the first connecting groove (351). The first connecting rod (352) is movably sleeved with one end of the connecting plate (306). The sliding frame (308) has a second connecting groove (381) on the top. A second connecting rod (382) is fixedly connected to the inner side of the second connecting groove (381). The second connecting rod (382) is movably sleeved with the other end of the connecting plate (306).

5. A static tensile testing device for the production of transparent polypropylene packaging bags according to claim 3, characterized in that: The sliding frame (308) has a rectangular hole (383) on its side, and rollers (384) are movably sleeved on the top and bottom of the inner wall of the rectangular hole (383).

6. The static tensile testing equipment for the production of polypropylene transparent packaging bags according to claim 1, characterized in that: The mounting assembly (404) includes a first cylindrical block (441) fixedly connected to the bottom of the fixing rod (403). The first cylindrical block (441) has a first threaded groove (442) on both sides. A first silicone sleeve (443) is fixedly sleeved on the outer side of the first cylindrical block (441).

7. The static tensile testing equipment for the production of polypropylene transparent packaging bags according to claim 1, characterized in that: The simulated object component (405) includes a second cylindrical block (451), a second threaded groove (452) is provided on one side of the second cylindrical block (451), a threaded connector (454) is fixedly connected to the other end of the second cylindrical block (451), and a second silicone sleeve (453) is fixedly sleeved on the outside of the second cylindrical block (451).

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