A plastic packaging bag toughness strength detection device and a detection method thereof

Abstract

The application discloses a kind of plastic packaging bag tenacity detection device and detection method thereof, it is related to detection device technical field, including workbench, tensile impact mechanism, fixed mechanism and collection mechanism, the top of workbench is fixedly connected with fixed frame, tensile impact mechanism is set on fixed frame, for the tensile and knock detection of packaging bag, fixed mechanism is set on workbench, for fixed packaging bag, collection mechanism is set inside workbench, for collecting the packaging bag after detection.The application utilizes the setting mode of tensile impact mechanism and fixed mechanism cooperation, by adjusting tensile impact mechanism different form cooperation fixed mechanism different fixed mode, can be impacted detection and tensile detection to packaging bag, improve detection efficiency and flexibility, operator does not need to replace equipment, only by adjusting mechanism form can quickly switch detection mode, save test time and site space, convenient to use.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a testing device and method for testing the toughness and strength of plastic packaging bags. Background Technology

[0002] The toughness and strength of packaging bags is a multi-dimensional performance indicator that needs to be comprehensively evaluated through a series of physical and mechanical tests such as tension, impact, tearing, crumpling, and friction to ensure that they can effectively protect the contents in actual circulation and use.

[0003] Traditional methods for tensile and impact testing of packaging bags require the use of two separate devices: a tensile testing machine and a dart impact tester. This split-type testing process is cumbersome, requiring switching between different devices and repeated sample clamping, resulting in low testing efficiency. In addition, the equipment occupies a large space, has high purchase and maintenance costs, and makes it difficult to achieve rapid correlation analysis and data integration of the two mechanical properties, which restricts the timeliness and consistency of comprehensive packaging quality assessment and is quite inconvenient. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for testing the toughness and strength of plastic packaging bags, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for testing the toughness and strength of plastic packaging bags, comprising: A workbench, the top of which is fixedly connected to a mounting frame; A tensile impact mechanism, which is mounted on a fixed frame, is used to perform tensile and impact tests on the packaging bag; A fixing mechanism, which is set on the workbench, is used to fix the packaging bag; A collection mechanism, located inside the workbench, is used to collect the packaging bags after testing.

[0006] Preferably, the tensile impact mechanism includes: An electric telescopic pole, which is fixedly installed on the top of a fixed frame; A lifting plate, wherein the lifting plate is slidably disposed inside the fixed frame, and the output end of the electric telescopic rod is connected to the lifting plate via a transmission connection; A tension detector, which is fixedly installed at the bottom end of the lifting plate; Mounting bracket, which is fixedly connected to the bottom end of the tensile detector; A sleeve, which is symmetrically rotatable within the mounting bracket via a pivot axis; A drive assembly, which is mounted on a mounting bracket, is used to drive the sleeve to rotate; An impact assembly, which is mounted on a sleeve, is used to pull or strike the packaging bag.

[0007] Preferably, the driving component includes: The motor is fixedly mounted on the outer wall of the mounting frame, and the output end of the motor is connected to the rotating shaft for transmission. The first gear is fixedly inserted into the rotating shaft, and the first gears mesh with each other.

[0008] Preferably, the impact component includes: An electromagnet, wherein the electromagnet is embedded in the inner wall of the sleeve; An adsorption rod is slidably inserted into the inner cavity of the sleeve, and the adsorption rod cooperates with an electromagnet. An adjusting rod, one end of which is fixedly connected to the adsorption rod; An impact block, which is fixedly connected to the other end of the adjusting rod.

[0009] Preferably, the impact assembly further includes: The counterweight ball has an adjustment groove inside the adjustment rod and a through hole on the outer wall of the adjustment rod that communicates with the adjustment groove. The counterweight ball can be placed into the adjustment groove through the through hole. A limiting block, wherein the limiting block is located inside the adjusting groove; An extrusion block, wherein the limiting block has an extrusion groove inside, and the extrusion block is located inside the extrusion groove; A positioning rod is fixedly inserted and connected to the extrusion block. Positioning holes are equidistantly opened at the bottom end of the inner wall of the adjustment groove. One end of the positioning rod passes through the limiting block and is slidably inserted and connected to the inner cavity of the positioning hole. A sliding groove is opened on one side of the inner wall of the through hole. The other end of the positioning rod is slidably inserted and connected to the inner cavity of the sliding groove. A compression spring is sleeved on the outside of the positioning rod. A positioning plate, which is fixedly connected to the other end of a positioning rod, has a C-shaped cross-section. The bolt has a through hole in one of the positioning plates and a connecting hole in the outer wall of the other positioning plate. The bolt passes through the through hole and is threaded into the inner cavity of the connecting hole.

[0010] Preferably, the fixing mechanism includes: A cylinder, which is fixedly mounted on the top of the workbench; The displacement plate is connected to the output end of the cylinder via a transmission connection. A clamping plate, which is fixedly connected to one side of the displacement plate; An adjustment component, disposed inside the clamping plate, is used to adjust the position of the clamping plate; A synchronization component, which is located inside the worktable, is used to move the displacement plate.

[0011] Preferably, the adjustment component includes: The screw has a groove inside the displacement plate, and the screw is rotatably inserted into the inner wall of the groove. The slider and the screw form a lead screw drive, and the slider is fixedly connected to the clamping plate.

[0012] Preferably, the synchronization component includes: The second gear is rotatably disposed inside the synchronizer slots symmetrically provided inside the worktable. A rack, which is slidably disposed inside a synchronization groove, and is meshed with a second gear; A connecting block is fixedly connected to the top end of the rack and the bottom end of the displacement plate. The top end of the worktable is provided with a sliding groove that communicates with the synchronization groove and cooperates with the connecting block to slide.

[0013] Preferably, the collection mechanism includes: A fan, which is fixedly installed on one side of the workbench; The collection box has a collection groove inside the workbench, and the collection box is slidably connected to the inner cavity of the collection groove. The top of the workbench has an impact groove, and one side of the inner wall of the impact groove has an air duct that communicates with the collection groove. The outer wall of the collection box has a collection hole that matches the air duct. A filter screen is embedded inside the collection box.

[0014] This invention also provides a testing method for a plastic packaging bag toughness and strength testing device, comprising the following specific steps: Step 1: Select the mode according to the detection target: If tensile testing is to be performed, proceed to Step 2 and adjust the impact component to a horizontal hook shape using the drive component; if impact testing is to be performed, proceed to Step 3 and adjust it to a vertical hammer shape. Step 2: Tensile test. Start the motor to drive the first gear and sleeve to rotate, so that the adjusting rod and impact block are in a horizontal state. Hang the bag handle on the adjusting rod and place the bottom of the bag between the two clamping plates. Push the displacement plate with the help of the cylinder and the synchronous component to make the clamping plates clamp the bottom of the bag synchronously. The clamping height can also be adjusted by rotating the screw. Start the electric telescopic rod to retract. Drive the impact component to move upward at a uniform speed through the lifting plate and tensile detector to stretch the bag and record the force value in real time until it breaks. After the test, the cylinder releases the clamping plate and the broken bag falls into the impact groove. Start the fan to create negative pressure in the collection box. The waste is sucked into the box through the air duct and intercepted by the filter screen. Finally, the electric telescopic rod is reset. Step 3: Impact weight adjustment operation. If the impact weight needs to be adjusted, disconnect the electromagnet power supply in advance to release the adsorption rod. Hold the adjustment rod and pull the positioning plate outward to drive the positioning rod to overcome the spring force of the compression spring and disengage from the positioning hole inside the adjustment rod. The sliding limit block moves in the adjustment groove to make room. Add or remove the counterweight ball into the adjustment groove through the through hole. After adjustment, reset the limit block and release the positioning plate so that the compression spring pushes the positioning rod to re-lock into the positioning hole and fix the counterweight ball. Then restart the electromagnet to fix the adsorption rod again. Step 4: Impact Test. After adjusting the weight, start the motor in reverse so that the sleeve drives the adjusting rod and the impact block to a vertically opposite state. Connect the two positioning plates with bolts to form an integral impact hammer and lock the positioning rod. Drive the two displacement plates to move towards each other through the cylinder and the synchronization component, so that the clamping plate uses the semi-circular groove to horizontally press the two sides of the packaging bag. Control the electromagnet to cut off the power, so that the impact hammer falls freely and impacts the clamped packaging bag. After the impact, the cylinder releases the clamping plate, observes the damage and counts it, and the damaged packaging bag falls into the impact groove. The negative pressure generated by the fan sucks it into the collection box through the air duct for collection. Finally, reset the impact assembly for the next impact test.

[0015] The technical effects and advantages of this invention are as follows: (1) The present invention utilizes the combination of a tensile impact mechanism and a fixing mechanism. By adjusting the different forms of the tensile impact mechanism and the different fixing methods of the fixing mechanism, impact testing and tensile testing of packaging bags can be performed, which improves testing efficiency and flexibility. Operators do not need to change equipment and can quickly switch testing modes by simply adjusting the form of the mechanism, saving testing time and space, and making it easy to use. (2) The present invention utilizes the combination of driving component and impact component. The adjustable sleeve of the driving component can switch back and forth between horizontal and vertical states, so that the impact component can perform tensile testing on the packaging bag when it is horizontal and impact testing on the packaging bag when it is vertical. The two impact components can be fixed together by bolts to form a complete impact hammer. At the same time, the weight of the impact hammer can be adjusted by adjusting the number of counterweight balls, which is convenient to use. (3) The present invention utilizes a collection mechanism to collect and process the damaged packaging bags in a concentrated manner, which effectively solves the problem of waste disposal. The collection of damaged packaging bags can keep the laboratory environment clean and avoid safety hazards caused by the scattering of waste. The centralized collection facilitates subsequent unified recycling or professional treatment, reducing the frequency and cost of manual cleaning. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall front internal structure of the present invention; Figure 3 This is a schematic diagram of the overall side internal structure of the present invention; Figure 4 This is a schematic diagram of the side structure of the mounting bracket of the present invention; Figure 5 This is one of the schematic diagrams of the front internal structure of the impact component of the present invention; Figure 6 This is a second schematic diagram of the internal structure of the impact component of the present invention from the front. Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a schematic diagram of the internal structure of the positioning plate of the present invention. Figure 9 This is a schematic diagram of the adjusting rod structure of the present invention; Figure 10 This is a top view of the internal structure of the synchronization component of the present invention; Figure 11 This is a schematic diagram of the internal structure of the adjustment component of the present invention.

[0017] In the attached image: 1. Workbench; 2. Fixing frame; 3. Tension impact mechanism; 31. Electric telescopic rod; 32. Lifting plate; 33. Tension detector; 34. Mounting bracket; 35. Sleeve; 36. Drive assembly; 361. Motor; 362. First gear; 37. Impact assembly; 371. Electromagnet; 372. Adsorption rod; 373. Adjusting rod; 374. Impact block; 375. Counterweight ball; 376. Limiting block; 377. Extrusion... 378. Pressure block; 379. Positioning rod; 3710. Positioning plate; 3711. Bolt; 3712. Compression spring; 4. Fixing mechanism; 41. Cylinder; 42. Displacement plate; 43. Clamping plate; 44. Adjustment assembly; 441. Screw; 442. Slider; 45. Synchronization assembly; 451. Second gear; 452. Rack; 453. Connecting block; 5. Collection mechanism; 51. Fan; 52. Collection box; 53. Filter screen. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides, for example Figure 1-11 The device shown includes a plastic packaging bag toughness and strength testing device, comprising a workbench 1, a tensile impact mechanism 3, a fixing mechanism 4, and a collection mechanism 5. A fixing frame 2 is fixedly connected to the top of the workbench 1. The tensile impact mechanism 3 is mounted on the fixing frame 2 and is used to perform tensile and impact tests on the packaging bag. The fixing mechanism 4 is mounted on the workbench 1 and is used to fix the packaging bag. The collection mechanism 5 is located inside the workbench 1 and is used to collect the tested packaging bag. By adjusting different shapes of the tensile impact mechanism 3 in conjunction with different fixing methods of the fixing mechanism 4, impact and tensile tests can be performed on the packaging bag, improving testing efficiency and flexibility. Operators do not need to change equipment; they can quickly switch testing modes simply by adjusting the mechanism shape, saving testing time and space. It is easy to use, and the collection mechanism 5 can collect and process the damaged packaging bags, effectively solving the problem of test waste disposal. Collecting the damaged packaging bags can keep the laboratory environment clean and avoid safety hazards caused by scattered waste. Centralized collection facilitates subsequent unified recycling or professional treatment, reducing the frequency and cost of manual cleaning.

[0020] Specifically, the tensile impact mechanism 3 includes an electric telescopic rod 31, a lifting plate 32, a tension detector 33, a mounting frame 34, a sleeve 35, a drive assembly 36, and an impact assembly 37. The electric telescopic rod 31 is fixedly installed on the top of the fixed frame 2; the lifting plate 32 is slidably disposed inside the fixed frame 2, and the output end of the electric telescopic rod 31 is connected to the lifting plate 32 via a transmission connection; the tension detector 33 is fixedly installed on the bottom end of the lifting plate 32; the mounting frame 34 is fixedly connected to the bottom end of the tension detector 33; the sleeve 35 is symmetrically rotated inside the mounting frame 34 via a pivot; and the drive assembly 36 is disposed on the mounting frame 34 and is used to drive the sleeve 35. The impact assembly 37 is mounted on the sleeve 35 and is used to pull or strike the packaging bag. The electric telescopic rod 31 is electrically connected to an external power source through an external controller. The electric telescopic rod 31 can drive the lifting plate 32 to move vertically, which in turn can drive the mounting bracket 34 under the tensile tester 33 to move vertically. When the impact assembly 37 is adjusted to a horizontal state by the drive assembly 36, the tensile properties of the packaging bag can be tested. During the impact test, the electric telescopic rod 31 drives the lifting plate 32 to move vertically, so that the impact height can be adjusted according to the impact requirements for easy use.

[0021] Furthermore, the drive assembly 36 includes a motor 361 and a first gear 362. The motor 361 is fixedly mounted on the outer wall of the mounting bracket 34, and the output end of the motor 361 is connected to the rotating shaft for transmission. The first gear 362 is fixedly inserted and connected to the rotating shaft, and the first gears 362 are meshed with each other. The motor 361 is electrically connected to an external power supply through an external controller. The controller can control the number of fixed forward and reverse rotations of the motor 361, so that the two sleeves 35 can be driven to rotate synchronously through the two first gears 362 of the same diameter, thereby realizing the switching of the state of the impact assembly 37, and thus switching between tensile testing and impact testing of the packaging bag.

[0022] Furthermore, the impact assembly 37 includes an electromagnet 371, an adsorption rod 372, an adjusting rod 373, and an impact block 374. The electromagnet 371 is embedded in the inner wall of the sleeve 35; the adsorption rod 372 is slidably inserted into the inner cavity of the sleeve 35, and the adsorption rod 372 cooperates with the electromagnet 371; one end of the adjusting rod 373 is fixedly connected to the adsorption rod 372; the impact block 374 is fixedly connected to the other end of the adjusting rod 373. The electromagnet 371 is electrically connected to an external power supply through an external controller. Whether or not it is energized, the electromagnet 371 can adsorb the adsorption rod 372. Thus, when the adjusting rod 373 and the impact block 374 are in a vertical state, the packaging bag can be impact-tested, and when the adjusting rod 373 and the impact block 374 are in a horizontal state, they can be adsorbed and fixed. The whole assembly forms an L-shaped hook that can be inserted into the handle of the packaging bag and cooperate with the fixing mechanism 4 to perform tensile testing.

[0023] Furthermore, the impact assembly 37 also includes a counterweight ball 375, a limiting block 376, a pressing block 377, a positioning rod 378, a positioning plate 379, a bolt 3710, and a compression spring 3711. The adjusting rod 373 has an adjusting groove inside, and a through hole communicating with the adjusting groove is formed on its outer wall. The counterweight ball 375 can be inserted into the adjusting groove through the through hole. The limiting block 376 is located inside the adjusting groove. A pressing groove is formed inside the limiting block 376, and the pressing block 377 is located inside the pressing groove. The positioning rod 378 is fixedly inserted and connected to the extrusion block 377. Positioning holes are equidistantly opened at the bottom end of the inner wall of the adjusting groove. One end of the positioning rod 378 passes through the limiting block 376 and is slidably inserted and connected to the inner cavity of the positioning hole. A sliding groove is opened on one side of the inner wall of the through hole, and the other end of the positioning rod 378 is slidably inserted and connected to the inner cavity of the sliding groove. A compression spring 3711 is sleeved on the outside of the positioning rod 378. The compression spring 3711 always provides a stable elastic force to the positioning rod 378 through the extrusion block 377. This allows the positioning rod 378 to be stably engaged with the positioning hole; the positioning plate 379 is fixedly connected to the other end of the positioning rod 378. The cross-section of the positioning plate 379 is C-shaped. The positioning rod 378 can be pulled through the positioning plate 379, causing the positioning rod 378 to disengage from the positioning hole, thereby allowing the sliding limit block 376 to slide, thus freeing up a certain amount of space. The number of counterweight balls 375 can be added or reduced, thus enabling impact testing of different weights during impact testing, which is convenient for use; one of the positioning plates 37... 9 has a through hole, and the outer wall of another positioning plate 379 has a connecting hole. The bolt 3710 passes through the through hole and is threaded into the inner cavity of the connecting hole. When the adjusting rod 373 and the impact block 374 are in a vertical state, the two positioning plates 379 can be connected by the bolt 3710. This not only splices the two adjusting rods 373 and the impact block 374 into a complete impact hammer, but also limits the positioning plate 379, so that the positioning rod 378 will not fall off during impact testing, making it easy to use.

[0024] Specifically, the fixing mechanism 4 includes a cylinder 41, a displacement plate 42, a clamping plate 43, an adjusting component 44, and a synchronization component 45. The cylinder 41 is fixedly installed on the top of the workbench 1; the output end of the cylinder 41 is connected to the displacement plate 42; the clamping plate 43 is fixedly connected to the opposite side of the displacement plate 42, and a semi-circular groove is provided on the opposite side of the clamping plate 43 to facilitate the two adjusting rods 373 and the impact block 374 to be spliced ​​into a complete impact hammer to drop and perform impact testing on the clamped and fixed packaging bag; the adjusting component 44 is set inside the clamping plate 43 and is used to adjust the position of the clamping plate 43; the synchronization component 45... 5 is installed inside the workbench 1 for displacement of the displacement plate 42. The cylinder 41 is connected to one of the displacement plates 42. The cylinder 41 is electrically connected to an external power supply through an external controller. By stretching one of the displacement plates 42 by the cylinder 41, the other displacement plate 42 can be moved closer or further away synchronously by the synchronization component 45. During the tensile test, the bottom of the packaging bag can be clamped by the clamping plate 43. The position of the clamping plate 43 can also be adjusted by the adjustment component 44. Not only can the clamping position be adjusted, but the packaging bag can also be squeezed and fixed in the impact test, which is convenient for use.

[0025] Furthermore, the adjustment component 44 includes a screw 441 and a slider 442. The displacement plate 42 has a groove inside, and the screw 441 is rotatably inserted into the inner wall of the groove. The slider 442 and the screw 441 form a screw drive. The slider 442 is fixedly connected to the clamping plate 43. By rotating the handle on the screw 441, the slider 442 can be moved vertically under the limit of the inner wall of the groove, thereby driving the clamping plate 43 to move vertically. The outer wall of the clamping plate 43 is provided with a rubber pad, and the outer wall of the rubber pad has anti-slip texture, which can increase the friction between the rubber pad and the packaging bag, making the clamping more secure and stable, and facilitating inspection.

[0026] Furthermore, the synchronization component 45 includes a second gear 451, a rack 452, and a connecting block 453. The workbench 1 has symmetrically arranged synchronization grooves inside, with the second gear 451 rotatably disposed within the synchronization grooves. The rack 452 is slidably disposed within the synchronization grooves, meshing with the second gear 451. The connecting block 453 is fixedly connected to the top of the rack 452 and to the bottom of the displacement plate 42. The top of the workbench 1 has a sliding groove communicating with the synchronization grooves and cooperating with the sliding of the connecting block 453. Through the meshing of the second gear 451 and the rack 452, when the cylinder 41 pushes one of the displacement plates 42, a force can be applied to one of the racks 452 through the connecting block 453. This allows the second gear 451 to drive the other rack 452 to move, thus enabling the two displacement plates 42 to move closer or further apart, allowing the clamping plate 43 to clamp and release the packaging bag.

[0027] Specifically, the collection mechanism 5 includes a fan 51, a collection box 52, and a filter screen 53. The fan 51 is fixedly installed on one side of the workbench 1. A collection groove is provided inside the workbench 1, and the collection box 52 is slidably inserted into the inner cavity of the collection groove. An impact groove is provided at the top of the workbench 1, and an air duct communicating with the collection groove is provided on one side of the inner wall of the impact groove. A collection hole matching the air duct is provided on the outer wall of the collection box 52. The fan 51 can extract air from inside the collection groove, thereby creating negative pressure inside the collection box 52. The air duct creates negative pressure inside the impact tank, allowing damaged packaging bags to be placed directly inside after testing. The bags are then collected in the collection box 52 under the negative pressure. A filter 53 is embedded inside the collection box 52. This filter facilitates airflow while intercepting packaging bags drawn into the collection box 52. After the fan 51 stops, the bags fall into the depths under gravity, preventing them from affecting future use. Only periodic centralized processing is required, making it convenient to use.

[0028] The detection method of this invention: Step 1: Select the mode according to the detection target: If tensile testing is to be performed, proceed to Step 2, and adjust the impact component 37 to a horizontal hook shape through the drive component 36; if impact testing is to be performed, proceed to Step 3, and adjust it to a vertical hammer shape. Step 2: Tensile test. Start motor 361 to drive the first gear 362 and sleeve 35 to rotate, so that the adjusting rod 373 and impact block 374 are turned to a horizontal state. Hang the bag handle on the adjusting rod 373 and place the bottom of the bag between the two clamping plates 43. Push the displacement plate 42 through cylinder 41 and use the synchronization component 45 to make the clamping plate 43 clamp the bottom of the bag synchronously. The clamping height can also be adjusted by rotating screw 441. Start the electric telescopic rod 31 to retract. Drive the impact component 37 to move upward at a uniform speed through lifting plate 32 and tensile detector 33 to stretch the bag and record the force value in real time until it breaks. After the test, cylinder 41 releases clamping plate 43 and the broken bag falls into the impact groove. Start fan 51 to create negative pressure in collection box 52. The waste is sucked into the box through the air duct and intercepted by filter screen 53. Finally, electric telescopic rod 31 is reset. Step 3: Impact weight adjustment operation. If the impact weight needs to be adjusted, disconnect the power supply of electromagnet 371 in advance to release the adsorption rod 372. Hold the adjustment rod 373 and pull the positioning plate 379 outward to drive the positioning rod 378 to overcome the elastic force of the compression spring 3711 and disengage from the positioning hole inside the adjustment rod 373. The sliding limit block 376 moves in the adjustment groove to make room. Add or remove the counterweight ball 375 into the adjustment groove through the through hole. After adjustment, reset the limit block 376 and release the positioning plate 379 so that the compression spring 3711 pushes the positioning rod 378 to re-lock into the positioning hole and fix the counterweight ball 375. Then restart the electromagnet 371 to fix the adsorption rod 372 again. Step 4: Impact Test. After adjusting the weight, start the motor 361 to reverse so that the sleeve 35 drives the adjusting rod 373 and the impact block 374 to a vertically opposite state. Connect the two positioning plates 379 with bolts 3710 to form an integral impact hammer and lock the positioning rod 378. Drive the two displacement plates 42 to move towards each other through the cylinder 41 and the synchronization component 45, so that the clamping plate 43 uses the semi-circular groove to horizontally press the two sides of the packaging bag. Control the electromagnet 371 to cut off the power, so that the impact hammer falls freely and impacts the clamped packaging bag. After the impact, the cylinder 41 releases the clamping plate 43, observes the damage and counts it, and the damaged packaging bag falls into the impact groove. The negative pressure generated by the fan 51 sucks it into the collection box 52 through the air duct for collection. Finally, reset the impact component 37 for the next impact test.

[0029] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the toughness and strength of plastic packaging bags, characterized in that, include: Workbench (1), with a fixed frame (2) fixedly connected to the top of the workbench (1); A tensile impact mechanism (3) is mounted on a fixed frame (2) and is used to perform tensile and impact tests on the packaging bag. Fixing mechanism (4), which is set on the workbench (1) and is used to fix the packaging bag; Collection mechanism (5), which is located inside the workbench (1), is used to collect the packaging bags after testing.

2. The plastic packaging bag toughness strength testing device according to claim 1, characterized in that, The tensile impact mechanism (3) includes: An electric telescopic rod (31) is fixedly installed on the top of the fixed frame (2); The lifting plate (32) is slidably disposed inside the fixed frame (2), and the output end of the electric telescopic rod (31) is connected to the lifting plate (32) in a transmission manner; A tension detector (33) is fixedly installed at the bottom end of the lifting plate (32); Mounting bracket (34), which is fixedly connected to the bottom end of the tension detector (33); Sleeve (35), which is symmetrically mounted inside the mounting bracket (34) via a pivot axis; A drive assembly (36) is mounted on a mounting bracket (34) and is used to drive the sleeve (35) to rotate. Impact component (37), which is disposed on sleeve (35), is used to pull or strike the packaging bag.

3. The device for testing the toughness and strength of plastic packaging bags according to claim 2, characterized in that, The driving component (36) includes: The motor (361) is fixedly installed on the outer wall of the mounting bracket (34), and the output end of the motor (361) is connected to the rotating shaft for transmission. The first gear (362) is fixedly inserted into the shaft and meshes with each other.

4. The device for testing the toughness and strength of plastic packaging bags according to claim 2, characterized in that, The impact assembly (37) includes: Electromagnet (371), wherein the electromagnet (371) is embedded in the inner wall of the sleeve (35); The adsorption rod (372) is slidably inserted into the inner cavity of the sleeve (35), and the adsorption rod (372) cooperates with the electromagnet (371). An adjusting rod (373) is fixedly connected at one end to an adsorption rod (372); Impact block (374), which is fixedly connected to the other end of adjusting rod (373).

5. The plastic packaging bag toughness strength testing device according to claim 4, characterized in that, The impact assembly (37) also includes: The counterweight ball (375) has an adjustment groove inside the adjustment rod (373), and a through hole communicating with the adjustment groove is opened on the outer wall of the adjustment rod (373). The counterweight ball (375) can be placed into the adjustment groove through the through hole. A limiting block (376) is located inside the adjusting groove; The extrusion block (377) has an extrusion groove inside the limiting block (376), and the extrusion block (377) is located inside the extrusion groove; A positioning rod (378) is fixedly inserted into the extrusion block (377). Positioning holes are equidistantly opened at the bottom of the inner wall of the adjustment groove. One end of the positioning rod (378) passes through the limiting block (376) and is slidably inserted into the inner cavity of the positioning hole. A sliding groove is opened on one side of the inner wall of the through hole. The other end of the positioning rod (378) is slidably inserted into the inner cavity of the sliding groove. A compression spring (3711) is sleeved on the outside of the positioning rod (378). Positioning plate (379), which is fixedly connected to the other end of positioning rod (378), and the cross section of positioning plate (379) is C-shaped; Bolt (3710), one of the positioning plates (379) has a through hole, and the other positioning plate (379) has a connecting hole on its outer wall. The bolt (3710) passes through the through hole and is threadedly connected to the inner cavity of the connecting hole.

6. The device for testing the toughness and strength of plastic packaging bags according to claim 1, characterized in that, The fixing mechanism (4) includes: Cylinder (41), the cylinder (41) is fixedly installed on the top of the workbench (1); Displacement plate (42), the output end of the cylinder (41) is connected to displacement plate (42) in a transmission manner; A clamping plate (43) is fixedly connected to the opposite side of the displacement plate (42); An adjustment component (44) is disposed inside the clamping plate (43) and is used to adjust the position of the clamping plate (43); Synchronization component (45) is disposed inside the worktable (1) and is used for displacement of displacement plate (42).

7. The plastic packaging bag toughness strength testing device according to claim 6, characterized in that, The adjustment component (44) includes: The screw (441) has a groove inside the displacement plate (42), and the screw (441) is rotatably inserted into the inner wall of the groove; The slider (442) and the screw (441) form a lead screw drive, and the slider (442) is fixedly connected to the clamping plate (43).

8. The plastic packaging bag toughness strength testing device according to claim 6, characterized in that, The synchronization component (45) includes: The second gear (451) is symmetrically provided with synchronization slots inside the worktable (1), and the second gear (451) is rotatably disposed inside the synchronization slots; A rack (452) is slidably disposed inside a synchronization groove, and the rack (452) meshes with a second gear (451); The connecting block (453) is fixedly connected to the top end of the rack (452) and the bottom end of the displacement plate (42). The top end of the worktable (1) is provided with a sliding groove that communicates with the synchronization groove and cooperates with the connecting block (453) to slide.

9. The device for testing the toughness and strength of plastic packaging bags according to claim 1, characterized in that, The collection mechanism (5) includes: A fan (51) is fixedly installed on one side of the workbench (1); The collection box (52) has a collection groove inside the workbench (1), and the collection box (52) is slidably inserted into the inner cavity of the collection groove. The top of the workbench (1) has an impact groove, and one side of the inner wall of the impact groove has an air duct that communicates with the collection groove. The outer wall of the collection box (52) has a collection hole that matches the air duct. A filter screen (53) is embedded inside the collection box (52).

10. A testing method for a plastic packaging bag toughness strength testing device according to any one of claims 1-9, characterized in that, The specific usage steps are as follows: Step 1: Select the mode according to the detection target: If tensile testing is to be performed, proceed to step 2 and adjust the impact component (37) to a horizontal hook shape using the drive component (36); if impact testing is to be performed, proceed to step 3 and adjust it to a vertical hammer shape. Step 2: Tensile test. Start the motor (361) to drive the first gear (362) and sleeve (35) to rotate, so that the adjusting rod (373) and impact block (374) turn to a horizontal state. Hang the bag handle on the adjusting rod (373), and place the bottom of the bag between the two clamping plates (43). Push the displacement plate (42) through the cylinder (41) and use the synchronization component (45) to make the clamping plate (43) clamp the bottom of the bag synchronously. The screw (441) can also be rotated to adjust the clamping. Height, start the electric telescopic rod (31) to retract, drive the impact component (37) to move upward at a constant speed through the lifting plate (32) and the tension detector (33), stretch the packaging bag and record the force value in real time until it breaks. After detection, the cylinder (41) releases the clamping plate (43), the broken bag falls into the impact groove, start the fan (51) to make the collection box (52) generate negative pressure, and suck the waste into the box through the air duct and intercept it by the filter screen (53). Finally, the electric telescopic rod (31) resets. Step 3: Impact weight adjustment operation. If the impact weight needs to be adjusted, the power supply of the electromagnet (371) can be disconnected in advance to release the adsorption rod (372). Hold the adjustment rod (373) and pull the positioning plate (379) outward to drive the positioning rod (378) to overcome the elastic force of the compression spring (3711) and disengage from the positioning hole inside the adjustment rod (373). The sliding limit block (376) moves in the adjustment groove to make room. Add or remove the counterweight ball (375) into the adjustment groove through the through hole. After adjustment, reset the limit block (376) and release the positioning plate (379) so that the compression spring (3711) pushes the positioning rod (378) to re-enter the positioning hole and fix it. Fix the counterweight ball (375) and restart the electromagnet (371) to fix the adsorption rod (372) again. Step 4: Impact test. After adjusting the weight, the motor (361) can be started to reverse so that the sleeve (35) drives the adjusting rod (373) and the impact block (374) to a vertically opposite state. The two positioning plates (379) are connected by bolts (3710) to form an integral impact hammer and the positioning rod (378) is locked. The cylinder (41) and the synchronization component (45) drive the two displacement plates (42) to move towards each other, so that the clamping plate (43) uses the semi-circular groove to horizontally press the two sides of the packaging bag. The electromagnet (371) is de-energized, so that the impact hammer falls freely and impacts the clamped and fixed packaging bag. After the impact, the cylinder (41) releases the clamping plate (43), observes the damage and makes statistics, and the damaged packaging bag falls into the impact groove. The negative pressure generated by the fan (51) is sucked into the collection box (52) through the air duct for collection. Finally, the impact component (37) is reset for the next impact test.

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