Tensile test device for environment-friendly container bag

Abstract

The utility model relates to the technical field of stretching test of environment-friendly flexible freight bags, and particularly discloses a stretching test device of an environment-friendly flexible freight bag, which comprises a bottom frame, a vertical plate is fixedly connected to the upper end of the bottom frame, a groove is formed in the front end of the vertical plate, a screw rod is rotatably connected to the inside of the groove, and the screw rod is fixedly connected to the bottom frame. A driving block is in threaded connection with the outer wall of the lead screw, a fixing plate is fixedly connected to the front end of the vertical plate, rectangular plates are arranged at the front ends of the driving block and the fixing plate correspondingly, multi-stage clamping mechanisms are arranged at the front ends of the two rectangular plates correspondingly, and each multi-stage clamping mechanism comprises a first threaded rod rotationally connected to the outer wall of the corresponding rectangular plate through a bearing; a multi-stage meshing structure of rubber trapezoid protruding blocks and trapezoid grooves is adopted, the progressive clamping effect is formed, the smooth environment-friendly material is effectively prevented from slipping, the anti-slip mat and the trapezoid meshing structure achieve the synergistic effect, the transverse plate and the rectangular plate are additionally designed in a matched limiting mode, and multiple anti-slip guarantees are achieved.

Description

Technical Field

[0001] This utility model relates to the field of tensile testing technology for environmentally friendly container bags, and specifically discloses a tensile testing device for environmentally friendly container bags. Background Technology

[0002] Flexible Intermediate Bulk Containers (FIBCs) are large-capacity packaging containers widely used in industries such as chemicals, food, and building materials. They are typically made of materials such as polypropylene (PP) or polyethylene (PE). With increasing environmental protection requirements, environmentally friendly FIBCs made from biodegradable, recycled plastics, or bio-based materials are gradually being adopted in the market. However, compared to traditional FIBCs, the mechanical properties (such as tensile strength, elongation at break, and fatigue resistance) of environmentally friendly materials may differ, thus requiring specialized tensile testing equipment to assess their reliability.

[0003] Existing tensile testing equipment for FIBCs (Flexible Intermediate Bulk Containers) generally employs hydraulic or mechanical transmission structures, using two planar clamps to hold the sample at single points at both ends. However, this traditional design has significant drawbacks: firstly, the smooth clamp surfaces have a low coefficient of friction with environmentally friendly materials (such as biodegradable plastics and recycled polypropylene); secondly, the single-layer clamping structure cannot provide sufficient clamping force, causing the sample to easily slip and shift during testing. Especially under high-load testing, this clamping instability severely affects the accuracy of the test data. Therefore, an environmentally friendly tensile testing device for FIBCs is needed to address these issues. Utility Model Content

[0004] This invention proposes an environmentally friendly tensile testing device for container bags, which has multiple anti-slip structures to prevent sample slippage and increase sample holding stability.

[0005] This utility model is implemented as follows: an environmentally friendly tensile testing device for container bags includes a base frame, a vertical plate fixedly connected to the upper end of the base frame, a groove opened at the front end of the vertical plate, a lead screw rotatably connected inside the groove, a drive block threadedly connected to the outer wall of the lead screw, a fixed plate fixedly connected to the front end of the vertical plate, and rectangular plates provided at the front ends of both the drive block and the fixed plate. The upper rectangular plate is fixedly connected to the fixed plate, and a multi-stage clamping mechanism is provided at the front ends of both rectangular plates.

[0006] The multi-stage clamping mechanism includes a first threaded rod rotatably connected to the outer wall of a rectangular plate via a bearing. A clamping plate is provided at the front end of the rectangular plate. The front end of the first threaded rod passes through the clamping plate and is threadedly connected to it. A torsion block is fixedly connected to the front end of the first threaded rod. The front end of the rectangular plate has multiple evenly distributed trapezoidal grooves. The rear end of the clamping plate is fixedly connected to multiple evenly distributed rubber trapezoidal protrusions that correspond to the multiple trapezoidal grooves.

[0007] Two symmetrically distributed sliding rods are fixedly connected to the outer wall of the rectangular plate. A horizontal plate is slidably connected to the outer wall of the two sliding rods. A mounting plate is fixedly connected to the lower end of the two sliding rods. A second threaded rod is threaded through and threaded to the lower end of the mounting plate. One end of the second threaded rod abuts against the horizontal plate.

[0008] As a preferred embodiment of the environmentally friendly tensile testing device for container bags of this utility model, the front end of the vertical plate is provided with a mounting groove, and a motor with its output end fixedly connected to the lead screw is installed inside the mounting groove.

[0009] As a preferred embodiment of the tensile testing device for an environmentally friendly container bag according to this utility model, a limiting rod is fixedly connected to the front end of the rectangular plate, and the front end of the limiting rod passes through the clamping plate and is fixedly connected to a limiting block.

[0010] As a preferred embodiment of the tensile testing device for environmentally friendly container bags of this utility model, a pressure sensor is installed inside the drive block, and an auxiliary plate that is fixedly connected to the upper end of the pressure sensor and located below the rectangular plate is fixedly connected to it.

[0011] As a preferred embodiment of the tensile testing device for an environmentally friendly container bag according to this utility model, anti-slip pads are provided on the opposite sides of the horizontal plate and the rectangular plate.

[0012] As a preferred embodiment of the tensile testing device for environmentally friendly container bags of this utility model, a sliding groove is provided through the interior of the groove, and the rear end of the drive block is slidably connected to the sliding groove via a slider.

[0013] As a preferred embodiment of the tensile testing device for environmentally friendly container bags according to this utility model, a controller is installed at the left end of the vertical plate.

[0014] The beneficial effects of this utility model are:

[0015] Multiple anti-slip clamping system: It adopts a multi-level interlocking structure of rubber trapezoidal protrusions and trapezoidal grooves to form a progressive clamping effect, effectively preventing slippage of smooth and environmentally friendly materials. The anti-slip pad and trapezoidal interlocking structure work together, and the addition of horizontal and rectangular plates for limiting design achieves multiple anti-slip protection. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is an overall structural diagram of an environmentally friendly container bag tensile testing device according to this utility model.

[0018] Figure 2 This is a left-side structural view of the present invention;

[0019] Figure 3 This is a partial left view of the present invention;

[0020] Figure 4 This is a partial right view of the present invention.

[0021] The markings in the diagram are: 1. Base frame; 2. Vertical plate; 3. Groove; 4. Mounting slot; 5. Motor; 6. Lead screw; 7. Drive block; 8. Fixing plate; 9. Rectangular plate; 10. Clamping plate; 11. First threaded rod; 12. Trapezoidal groove; 13. Trapezoidal protrusion; 14. Horizontal plate; 15. Slide rod; 16. Second threaded rod; 17. Mounting plate; 18. Pressure sensor; 19. Limiting rod; 20. Auxiliary plate. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0023] Please see Figure 1-4 A tensile testing device for an environmentally friendly container bag includes a base frame 1, a vertical plate 2 fixedly connected to the upper end of the base frame 1, a groove 3 opened at the front end of the vertical plate 2, a lead screw 6 rotatably connected inside the groove 3, a drive block 7 threadedly connected to the outer wall of the lead screw 6, a fixed plate 8 fixedly connected to the front end of the vertical plate 2, and rectangular plates 9 provided at the front ends of both the drive block 7 and the fixed plate 8. The upper rectangular plate 9 is fixedly connected to the fixed plate 8, and a multi-stage clamping mechanism is provided at the front ends of both rectangular plates 9.

[0024] The multi-stage clamping mechanism includes a first threaded rod 11 rotatably connected to the outer wall of a rectangular plate 9 via bearings. A clamping plate 10 is provided at the front end of the rectangular plate 9. The front end of the first threaded rod 11 passes through the clamping plate 10 and is threadedly connected to the clamping plate 10. A torsion block is fixedly connected to the front end of the first threaded rod 11. Multiple evenly distributed trapezoidal grooves 12 are provided at the front end of the rectangular plate 9. Multiple evenly distributed rubber trapezoidal protrusions 13, each corresponding to one of the multiple trapezoidal grooves 12, are fixedly connected to the rear end of the clamping plate 10.

[0025] Two symmetrically distributed slide rods 15 are fixedly connected to the outer wall of the rectangular plate 9. A horizontal plate 14 is slidably connected to the outer wall of the two slide rods 15. A mounting plate 17 is fixedly connected to the lower end of the two slide rods 15. A second threaded rod 16 is threaded through and threaded to the lower end of the mounting plate 17. One end of the second threaded rod 16 abuts against the horizontal plate 14.

[0026] In this embodiment: the multi-stage clamping mechanism works as follows: when the first threaded rod 11 is tightened, the clamping plate 10 moves toward the rectangular plate 9, the rubber trapezoidal protrusion 13 and the trapezoidal groove 12 form a multi-stage interlocking structure, the anti-slip pad is in direct contact with the sample, and then the second threaded rod 16 drives the horizontal plate 14 to slide along the slide rod 15, so that the horizontal plate 14 and the rectangular plate 9 cooperate to limit the end of the sample, further increasing the stability of clamping the sample. The drive screw 6 rotates in the groove 3, and through the threaded transmission, drives the drive block 7 to move linearly along the slide groove of the groove 3 to stretch the sample.

[0027] As a technical optimization of this utility model, the front end of the vertical plate 2 is provided with a mounting groove 4, and a motor 5 whose output end is fixedly connected to the lead screw 6 is installed inside the mounting groove 4.

[0028] In this embodiment, the motor 5 can drive the lead screw 6 to rotate.

[0029] As a technical optimization of this utility model, a limiting rod 19 is fixedly connected to the front end of the rectangular plate 9, and the front end of the limiting rod 19 passes through the clamping plate 10 and is fixedly connected to the limiting block.

[0030] In this embodiment, the clamping plate 10 can be prevented from rotating axially by the limiting rod 19.

[0031] As a technical optimization of this utility model, a pressure sensor 18 is installed inside the drive block 7, and an auxiliary plate 20 that is fixedly connected to the upper end of the pressure sensor 18 and fixedly connected to the rectangular plate 9 located below.

[0032] In this embodiment, the actual tensile force borne by the sample can be monitored in real time through the pressure sensor 18.

[0033] As a technical optimization of this utility model, anti-slip pads are provided on the opposite sides of the horizontal plate 14 and the rectangular plate 9.

[0034] In this embodiment: the anti-slip mat can effectively prevent the smooth degradable plastic sample from slipping.

[0035] As a technical optimization of this utility model, a sliding groove is provided through the interior of the groove 3, and the rear end of the drive block 7 is slidably connected to the sliding groove through a slider.

[0036] In this embodiment, the rear end of the drive block 7 is slidably connected to the slide groove via a slider, which can increase the stability of the drive block 7 when it moves.

[0037] As a technical optimization of this utility model, a controller is installed on the left end of the vertical plate 2.

[0038] In this embodiment, the controller is electrically connected to the motor 5 and the pressure sensor 18, so that the break point can be automatically determined by the controller, avoiding human misjudgment.

[0039] The working principle and usage process of this utility model are as follows: In use, the two ends of the sample are fixed inside the two multi-stage clamping mechanisms. When the first threaded rod 11 is tightened, the clamping plate 10 moves towards the rectangular plate 9. The rubber trapezoidal protrusion 13 and the trapezoidal groove 12 form a multi-stage interlocking structure. As the pressure increases, a progressive clamping effect is produced. The anti-slip pad is in direct contact with the sample. Then, the second threaded rod 16 drives the horizontal plate 14 to slide along the slide rod 15, clamping the sample end between the horizontal plate 14 and the rectangular plate 9, further increasing the stability of clamping the sample. The drive screw 6 rotates in the groove 3, and through the threaded transmission, it drives the drive block 7, the pressure sensor 18 (recommended model is NMB UTA series tension and compression bidirectional sensor), and the auxiliary plate 20 to move linearly along the slide groove of the groove 3, stretching the sample.

[0040] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] However, the above are merely specific embodiments of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A tensile testing device for environmentally friendly container bags, comprising a base frame (1), characterized in that: The upper end of the base frame (1) is fixedly connected to a vertical plate (2). The front end of the vertical plate (2) is provided with a groove (3). A lead screw (6) is rotatably connected inside the groove (3). A drive block (7) is threadedly connected to the outer wall of the lead screw (6). A fixed plate (8) is fixedly connected to the front end of the vertical plate (2). A rectangular plate (9) is provided at the front end of both the drive block (7) and the fixed plate (8). The upper rectangular plate (9) is fixedly connected to the fixed plate (8). A multi-stage clamping mechanism is provided at the front end of both rectangular plates (9). The multi-stage clamping mechanism includes a first threaded rod (11) rotatably connected to the outer wall of a rectangular plate (9) via a bearing. A clamping plate (10) is provided at the front end of the rectangular plate (9). The front end of the first threaded rod (11) passes through the clamping plate (10) and is threadedly connected to the clamping plate (10). A torsion block is fixedly connected to the front end of the first threaded rod (11). A plurality of evenly distributed trapezoidal grooves (12) are provided at the front end of the rectangular plate (9). A plurality of evenly distributed rubber trapezoidal protrusions (13) corresponding to the plurality of trapezoidal grooves (12) are fixedly connected to the rear end of the clamping plate (10). Two symmetrically distributed slide rods (15) are fixedly connected to the outer wall of the rectangular plate (9). A horizontal plate (14) is slidably connected to the outer wall of the two slide rods (15). An installation plate (17) is fixedly connected to the lower end of the two slide rods (15). The lower end of the installation plate (17) is threaded through and connected to the second threaded rod (16). One end of the second threaded rod (16) abuts against the horizontal plate (14).

2. The tensile testing device for an environmentally friendly container bag according to claim 1, characterized in that: The front end of the vertical plate (2) is provided with a mounting groove (4), and a motor (5) whose output end is fixedly connected to the lead screw (6) is installed inside the mounting groove (4).

3. The tensile testing device for an environmentally friendly container bag according to claim 1, characterized in that: The front end of the rectangular plate (9) is fixedly connected to a limiting rod (19), and the front end of the limiting rod (19) passes through the clamping plate (10) and is fixedly connected to a limiting block.

4. The tensile testing device for an environmentally friendly container bag according to claim 1, characterized in that: The drive block (7) is equipped with a pressure sensor (18), and the upper end of the pressure sensor (18) is fixedly connected to an auxiliary plate (20) that is fixedly connected to the rectangular plate (9) below.

5. The tensile testing device for an environmentally friendly container bag according to claim 1, characterized in that: The horizontal plate (14) and the rectangular plate (9) opposite each other are provided with anti-slip pads.

6. The tensile testing device for an environmentally friendly container bag according to claim 1, characterized in that: The groove (3) has a through groove, and the rear end of the drive block (7) is slidably connected to the groove via a slider.

7. The tensile testing device for an environmentally friendly container bag according to claim 1, characterized in that: A controller is installed on the left end of the vertical plate (2).

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