Woven bag tensile strength detection device

Abstract

The utility model discloses a woven bag tensile strength detection device which comprises a workbench, a stretching assembly and a clamping assembly, the workbench is of a U-shaped platy structure, the longitudinal side of the workbench is fixedly connected with a vertical plate, the stretching assembly comprises a horizontally arranged placing plate, the longitudinal side of the placing plate is fixedly connected with the plate surface of the vertical plate, and the clamping assembly is fixedly connected with the vertical plate. A mounting groove is formed in the other longitudinal side of the placement plate, two electric push rods are symmetrically arranged in the mounting groove, the mounting ends of the electric push rods are fixedly connected with the groove bottom of the mounting groove, and the movable ends of the two electric push rods are fixedly connected with the same movable block; the clamping assembly comprises two clamping plates, the two clamping plates are movably arranged above and below the containing plate correspondingly, and the moving directions of the two clamping plates are opposite. After a woven bag is opened and sleeved on the placing plate, the two clamping plates move relatively to clamp a bag opening, the electric push rod is started to drive the movable block to abut against the inner bottom of the bag, the woven bag is gradually opened to detect the tensile strength of the woven bag, the tensile force is balanced, and the detection efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of woven bag testing technology, and in particular to a device for testing the tensile strength of woven bags. Background Technology

[0002] Woven bags, a common packaging material, are made of multiple wide, flat ropes woven together. Their primary function is to package or hold goods. As the load increases, the ropes shift relative to each other, creating gaps in the bag. When these gaps increase in number or size, the bag's functionality decreases. Therefore, the tensile strength of woven bags is a crucial indicator of their quality. During production, woven bags are typically sampled randomly from batches for preliminary screening to assess their strength. This is usually done by workers pulling the bags with their hands. This method is cumbersome, inefficient, and results in uneven stress during pulling, making the test results overly reliant on worker experience. Different workers apply varying degrees of force, potentially leading to significant misjudgments. Utility Model Content

[0003] The purpose of this invention is to address the above-mentioned problems by providing a device for testing the tensile strength of woven bags, which can balance the tensile force on the woven bags during tensile strength testing, ensuring the objectivity of the test and improving the testing efficiency.

[0004] A device for testing the tensile strength of woven bags includes a workbench, a tensile assembly, and a clamping assembly. The workbench has a U-shaped plate structure with a vertical plate fixedly connected to one longitudinal side. The tensile assembly includes a horizontally arranged placement plate, with one longitudinal side of the placement plate fixedly connected to the surface of the vertical plate. A mounting groove is formed on the other longitudinal side of the placement plate, and two electric actuators are symmetrically arranged in the mounting groove. The mounting ends of the electric actuators are fixedly connected to the bottom of the mounting groove, and the movable ends of the two electric actuators are fixedly connected to the same movable block. The clamping assembly includes two clamping plates, which are respectively movably arranged above and below the placement plate, and the two clamping plates move in opposite directions.

[0005] As an option, two lead screws are vertically arranged on both sides of the placement plate. The two ends of the lead screws are rotatably connected to the worktable. The two ends of the clamping plate are provided with threaded holes that mate with the lead screws. A transmission box is provided on the upper surface of the worktable. The transmission box has a cavity inside. A bevel gear is fixedly sleeved on the top of the lead screw through the upper surface of the worktable. The bevel gear is arranged in the transmission box. A transmission rod is rotatably connected inside the transmission box. A transmission gear is fixedly sleeved on the transmission rod. The transmission gear meshes with the bevel gear.

[0006] As an option, a rocker arm is provided on the outside of the transmission box. The rocker arm has a Z-shaped rod structure, and one end of the rocker arm passes through the transmission box and is fixedly connected to one end of the transmission rod.

[0007] As an option, an improved version of the aforementioned solution is provided, wherein the upper and lower surfaces of the placement plate are symmetrically provided with embedding grooves, the embedding grooves are longitudinally continuous and have a broken cross-section.

[0008] As an option, a pressure roller is vertically installed in the embedding groove, with a gap between the bottom end of the pressure roller and the bottom end of the embedding groove. Before the inspection, the woven bag is opened and placed onto the placement plate, with the bag opening inserted into the upper and lower embedding grooves. The pressure roller first assists in fixing the bag opening, and then the clamping plate fixes it, facilitating clamping operations.

[0009] As an option, an anti-slip layer is laid on the opposing surfaces of the two clamping plates, making the clamping plates more secure in fixing the woven bag.

[0010] As an option, a pressure sensor and a rubber sleeve are fixedly connected to the end face of the movable block away from the electric actuator, with the rubber sleeve surrounding the pressure sensor.

[0011] As an option, a control unit is also included, which is electrically connected to the tension assembly and the pressure sensor, respectively, and is used to control the operation of the tension assembly, receive electrical signals from the pressure sensor, and display pressure values.

[0012] By adopting the above technical solution, this utility model has the following beneficial effects:

[0013] This invention utilizes a stretching and clamping assembly. After the woven bag is opened and placed onto the placement plate, two clamping plates move relative to each other to clamp the bag opening. Then, an electric actuator is activated, causing a movable block to press against the bottom of the bag, gradually expanding the woven bag. The tensile strength of the woven bag is determined by observing the gaps and pressure values ​​of the woven ropes. This invention, through its semi-automatic design, ensures uniform stress on the woven bag during the testing process, improving the objectivity and efficiency of the test results. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a cross-sectional view of the present invention.

[0016] Figure 3 This is the utility model Figure 2 Enlarged view of point A.

[0017] In the attached diagram, the components are: worktable 1, vertical plate 2, tensioning assembly 3, placement plate 31, mounting groove 311, embedding groove 312, movable block 32, electric actuator 33, clamping assembly 4, clamping plate 41, threaded hole 411, anti-slip layer 412, lead screw 42, bevel gear 43, transmission gear 44, transmission rod 45, rocker arm 46, pressure roller 5, pressure sensor 6, rubber sleeve 7, and control unit 8. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] A utility model discloses a device for testing the tensile strength of woven bags, comprising a workbench 1, a tensile assembly 3, a clamping assembly 4, and a control unit 8. The workbench 1 has a U-shaped plate structure, with a vertical plate 2 fixedly welded to one of its longitudinal sides. The control unit 8 is installed on the front side of the workbench 1 and is electrically connected to the tensile assembly 3, and is used to control the operation of the tensile assembly 3.

[0020] The stretching assembly 3 includes a horizontally arranged placement plate 31. One longitudinal side of the placement plate 31 is fixedly connected to the surface of the vertical plate 2. The other longitudinal side of the placement plate 31 has a horizontally extending mounting groove 311. Two electric push rods 33 are symmetrically arranged in the mounting groove 311. The mounting ends of the electric push rods 33 are fixedly connected to the bottom of the mounting groove 311. The movable ends of the two electric push rods 33 are fixedly connected to the same movable block 32. The movable block 32 is driven by the two electric push rods 33 to move left and right horizontally. When the electric push rods 33 are fully retracted, the movable block 32 is completely retracted into the mounting groove 311. A pressure sensor 6 and a rubber sleeve 7 are fixedly installed on the end face of the movable block 32 away from the electric push rods 33. The rubber sleeve 7 is semi-circular and surrounds the pressure sensor 6 to protect it. The pressure sensor 6 is electrically connected to the control unit 8. The control unit 8 can receive the electrical signal from the pressure sensor 6 and display the pressure value. This pressure value is positively correlated with the tensile strength of the woven bag, which means that the tensile strength of the woven bag can be determined.

[0021] The upper and lower ends of the placement plate 31 are symmetrically provided with embedding grooves 312. As shown in the figure, the embedding groove 312 runs longitudinally and has a broken cross-section. A pressure roller 5 is vertically installed in the embedding groove 312 through the mounting plate. There is a gap between the bottom end of the pressure roller 5 and the bottom end of the embedding groove 312. This gap should be slightly smaller than the thickness of the woven bag. Before the inspection, the woven bag is opened and put into the placement plate 31. The bag opening is inserted into the upper and lower embedding grooves 312, and the pressure roller 5 first assists in fixing the bag opening.

[0022] The clamping assembly 4 includes a clamping plate 41, a lead screw 42, a bevel gear 43, a transmission gear 44, a transmission rod 45, and a rocker arm 46. Specifically, except for the transmission rod 45 and the rocker arm 46, there are two clamping plates 41, two lead screws 42, two bevel gears 43, and two transmission gears 44. The two clamping plates 41 are respectively positioned above and below the placement plate 31, and the two lead screws 42 are vertically positioned on both sides of the placement plate 31. The two ends of the lead screws 42 are rotatably mounted to the worktable 1 via bearings. The lead screws 42 are specifically double-threaded lead screws with symmetrical threads at both ends. The clamping plates 41 have threaded holes 411 at both ends that mate with the threads of the lead screws 42. By rotating the two lead screws 42, the two clamping plates 41 are moved in opposite directions to clamp and fix the opening of the woven bag. In order to improve the stability of the clamping, an anti-slip layer 412, which can be made of rubber, is laid on the opposite surfaces of the two clamping plates 41. A transmission box is installed on the upper surface of the workbench 1. The transmission box has a chamber inside. A bevel gear 43 is fixedly sleeved onto the top of the lead screw 42, which passes through the upper surface of the workbench. The bevel gear 43 is arranged inside the transmission box. A transmission rod 45 is rotatably connected inside the transmission box, and a transmission gear 44 is fixedly sleeved on the transmission rod 45, meshing with the bevel gear 43. A rocker arm 46 is installed on the outside of the transmission box. The rocker arm 46 has a Z-shaped rod structure. One end of the rocker arm 46 passes through the transmission box and is fixedly connected to one end of the transmission rod 45. Rotating the rocker arm 46 causes the transmission rod 45 to rotate, thereby driving the lead screw 42 to rotate and moving the two clamping plates 41. It should be noted that in other alternative embodiments, the rocker arm 46 can be replaced by a motor. If a motor is selected, it can be installed in the transmission box and electrically connected to the control unit 8.

[0023] Before testing, the woven bag is opened and placed into the placement plate 31. The bag opening is inserted into the upper and lower insertion grooves 312, and the pressure roller 5 assists in fixing the bag opening. Then, the rocker arm 46 is manually cranked to move the two clamping plates 41 relative to each other until the bag opening is clamped from the top and bottom. Then, the switch of the control unit is pressed to start the electric push rod 33, which drives the movable block 32 to abut against the bottom of the bag, gradually opening the woven bag. The rubber sleeve 7 deforms and presses against the pressure sensor 6. By observing the gap of the woven rope and the pressure value, the tensile strength of the woven bag can be roughly judged.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A woven bag tensile strength detection device, characterized by: The utility model provides a kind of stretching device, including workbench (1), stretching assembly (3) and clamping assembly (4), the workbench (1) is U-shaped board structure, and one side of its longitudinal direction is fixedly connected with vertical plate (2), the stretching assembly (3) includes horizontally arranged placement plate (31), and the longitudinal side of the placement plate (31) is fixedly connected with the board face of vertical plate (2), and the longitudinal other side of the placement plate (31) is provided with installation groove (311), and two electric push rods (33) are symmetrically arranged in the installation groove (311), and the mounting end of the electric push rod (33) is fixedly connected with the groove bottom of installation groove (311), and the active end of the two electric push rods (33) is fixedly connected with the same active block (32);The clamping assembly (4) includes two clamping plates (41), and the two clamping plates (41) are movably arranged above and below the placement plate (31) respectively, and the moving direction of the two clamping plates (41) is opposite.

2. A woven bag tensile strength detection device according to claim 1, characterized in that: Two lead screws (42) are vertically arranged on the transverse two sides of the placement plate (31), both ends of the lead screw (42) are rotatably connected with the workbench (1), and both ends of the clamping plate (41) are provided with threaded holes (411) threadedly matched with the lead screw (42);A transmission box is arranged on the upper plate surface of the workbench (1), the transmission box is provided with a cavity, the top end of the lead screw (42) penetrates the upper plate surface of the workbench and is fixedly sleeved with a bevel gear (43), and the bevel gear (43) is arranged in the transmission box, a transmission rod (45) is rotatably connected in the transmission box, a transmission gear (44) is fixedly sleeved on the transmission rod (45), and the transmission gear (44) is meshedly connected with the bevel gear (43).

3. A woven bag tensile strength detection device according to claim 2, characterized in that: A rocker (46) is arranged on the outside of the transmission box, the rocker (46) is Z-shaped rod structure, and one end of the rocker (46) is fixedly connected with one end of the transmission rod (45) penetrating the transmission box.

4. The woven bag tensile strength detection device according to claim 1, characterized in that: The upper end surface and the lower end surface of the placement plate (31) are symmetrically provided with embedding grooves (312), and the embedding grooves (312) penetrate longitudinally and are in the shape of broken line in cross section.

5. A woven bag tensile strength detection device according to claim 4, characterized in that: A pressure roller (5) is vertically arranged in the embedding groove (312), and there is a gap between the bottom end of the pressure roller (5) and the bottom end of the embedding groove (312).

6. A woven bag tensile strength detection device according to claim 1, characterized in that: Anti-skid layers (412) are laid on the opposite plate surfaces of the two clamping plates (41).

7. A woven bag tensile strength detection device according to claim 1, characterized in that: A pressure sensor (6) and a rubber sleeve (7) are fixedly connected to the end face of the active block (32) away from the electric push rod (33), and the rubber sleeve (7) surrounds the pressure sensor (6) outside.

8. A woven bag tensile strength detection device according to claim 6, characterized in that: A control unit (8) is mounted on the front side of the workbench (1), and the control unit (8) is electrically connected with the stretching assembly (3) and the pressure sensor (6) respectively, for controlling the operation of the stretching assembly (3), receiving the electrical signal of the pressure sensor (6) and displaying the pressure value.

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