Quality detection device for flexible freight bag production

Abstract

The utility model relates to the technical field of pressure test equipment, and discloses a quality detection device for flexible freight bag production, which comprises a portal frame and a hydraulic station, the hydraulic station is arranged on one side of the portal frame, one side of the portal frame is fixedly connected with a master control box, the hydraulic station is electrically connected with the master control box through a cable, and a rack is fixedly connected in the portal frame. A hydraulic cylinder is fixedly connected to the rack and connected with a hydraulic station through a hydraulic pipe, a hanging bracket is fixedly connected to the bottom of the rack, a piston rod is movably connected into the hydraulic cylinder, one end of the piston rod extends to the position below the hanging bracket and is provided with a pushing and pressing mechanism, and the pushing and pressing mechanism further comprises a movable lantern ring and a fixed lantern ring. A V-shaped rod, a telescopic beam and a connecting rod of the pushing and pressing mechanism are combined, so that the integrity and the distribution of uniform stress of base cloth after loading can be simulated, local single-point stress is not measured only, the potential risk of a connecting point of a hanging belt and the base cloth under overall tension is accurately captured, and the problem that a single hanging belt is detected to be qualified but the connecting point is torn in actual use is solved.

Description

Technical Field

[0001] This utility model relates to the field of pressure testing equipment technology, and in particular to a quality inspection device for the production of container bags. Background Technology

[0002] FIBCs, also known as flexible container bags or ton bags, are flexible transport packaging containers made of synthetic fibers such as polypropylene. They are commonly used for the storage and transportation of bulk cargo and are compatible with equipment such as forklifts and cranes for loading and unloading.

[0003] During the production process of FIBCs (Flexible Intermediate Bulk Containers), various performance tests are required to ensure safe transportation and durability. For example, the Chinese utility model patent CN219641406U discloses a tensile strength testing machine for flexible intermediary bags. This machine uses a rotating disc to rotate the top plate, causing the second clamping plate to slide downwards. The second clamping plate, in conjunction with the first clamping plate, clamps and secures the flexible intermediary bag. The operation of a cylinder causes a positioning slide plate to slide on a groove, which in turn causes the first and second clamping plates to hold the flexible intermediary bag in place. The application involves tensile testing to assess the tensile quality of flexible container bags. However, this method is similar to traditional tensile testing equipment. When testing the tensile strength of the base fabric and straps using tensile testing equipment, only the connection strength between a single strap and the base fabric can be tested. It cannot simulate the overall and distributed stress on the base fabric after loading. During actual loading, the bag body is affected by the weight of the cargo, and the base fabric will generate uniform tension. However, single-strap testing only measures the local single-point stress, which can easily overlook the potential risks at the connection point under overall tension. This may result in a situation where a single strap passes the test but the connection point tears after actual loading. Utility Model Content

[0004] The purpose of this invention is to provide a quality inspection device for the production of FIBCs (Flexible Intermediate Bulk Containers), which can simulate the overall stress state of the base fabric after the FIBC is filled, avoid single-strand inspection deviation, and can be adapted to FIBCs of different sizes by adjusting the pushing mechanism, making the inspection more realistic and effectively solving the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A quality inspection device for producing bulk bags includes a gantry frame and a hydraulic station. The hydraulic station is located on one side of the gantry frame, and a main control box is fixedly connected to one side of the gantry frame. The hydraulic station is electrically connected to the main control box via a cable. A frame is fixedly connected inside the gantry frame, and a hydraulic cylinder is fixedly connected to the frame. The hydraulic cylinder is connected to the hydraulic station via a hydraulic pipe. A hanger is fixedly connected to the bottom of the frame. A piston rod is movably connected inside the hydraulic cylinder, and one end of the piston rod extends to a position below the hanger and is provided with a pushing mechanism. The pushing mechanism also includes a movable collar and a... A fixed collar is provided, and a movable collar is inserted and connected to the outside of the piston rod. The fixed collar is fixedly connected to the outside of the piston rod located below the movable collar. Multiple mounting holes are provided on the inner side of the movable collar, and positioning steel balls are inserted and connected in the mounting holes. A limit ring is threadedly connected to the outside of the movable collar. Several fixed beams are fixedly connected to the outside of the fixed collar. A V-shaped rod is provided at one end of the fixed beam. A telescopic beam is fixedly connected to the side of the V-shaped rod opposite to the piston rod. The telescopic beam is movably connected to the fixed beam. A connecting rod is movably connected between two adjacent V-shaped rods.

[0007] As a further preferred embodiment of this utility model, the bottom of the hanger is fixedly connected with several hooks to realize the lifting operation of the sling of the container bag.

[0008] As a further preferred embodiment of this utility model, the piston rod is provided with multiple annular positioning grooves on its outer side, which allows multiple positioning steel balls to be locked into the positioning grooves after being limited by the limiting ring, thereby achieving rapid limiting of the movable collar.

[0009] As a further preferred embodiment of this utility model, multiple bearing seats are fixedly connected to the outer side of the movable collar, providing connection points for connecting the movable collar to the telescopic beam via a connecting rod. The diameter of one side of the mounting hole is smaller than the diameter of the positioning steel ball, thereby preventing the positioning steel ball from falling out of the mounting hole from the side away from the piston rod after the limiting ring moves away from the mounting hole.

[0010] As a further preferred embodiment of this utility model, the bottom of the limiting ring is provided with a slope, so that after the limiting ring is away from the mounting hole, the movable collar can be moved up and down, so that the positioning steel balls are moved out of the corresponding positioning groove and then limited by the outside of the piston rod and stored in the mounting hole. A handwheel is fixedly connected to the outside of the limiting ring. After manually turning the handwheel, the handwheel drives the limiting ring to rotate towards the mounting hole on the outside of the movable collar, so that the limiting ring simultaneously squeezes multiple positioning steel balls towards the piston rod, so that the outside of multiple positioning steel balls are simultaneously locked into the corresponding piston rod, realizing the rapid and stable limiting of the movable collar.

[0011] As a further preferred embodiment of this utility model, guide rails are fixedly connected to both sides of the fixed beam, and guide grooves are opened on both sides of the telescopic beam. The guide grooves are slidably connected to the guide rails, and the movement of the telescopic beam on the guide rails, in conjunction with the movable collar and connecting rod, realizes the movement of the V-shaped rod.

[0012] As a further preferred embodiment of this utility model, a number of limiting blocks are fixedly connected to the inner side of the V-shaped rod, and a number of sliding grooves are opened on the inner side of the connecting rod. The connecting rod is inserted into two adjacent V-shaped rods, and the sliding groove is slidably connected to the corresponding limiting block. When multiple V-shaped rods move and expand to one side simultaneously, the connecting rod can fill the gap between two adjacent V-shaped rods, thereby improving the integrity of the combined structure of multiple V-shaped rods, telescopic beams, and connecting rods.

[0013] As a further preferred embodiment of this utility model, a connecting rod is rotatably connected inside the bearing seat, and the end of the connecting rod away from the bearing seat is rotatably connected to the middle position of the corresponding V-shaped rod. When the height of the movable collar is adjusted, multiple V-shaped rods can be pushed and pulled simultaneously through multiple connecting rods, thereby enabling multiple V-shaped rods and connecting rods to expand or retract and form rectangular structures of different areas, thus adapting to container bags of different sizes.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In this utility model, the combination of the V-shaped rod, telescopic beam and connecting rod of the pushing mechanism can simulate the overall integrity and distribution of the uniform force on the base fabric after loading, rather than just measuring the local single-point force. It can capture the potential risks of the connection point between the sling and the base fabric under overall tension and avoid the problem of the connection point tearing when a single piece passes the test.

[0016] 2. In this utility model, by adjusting the height of the movable collar and synchronously pushing and pulling the V-shaped rod with the help of the connecting rod, the V-shaped rod and the connecting rod can form rectangular structures of different areas to adapt to different sizes of FIBCs. This eliminates the need for frequent replacement of testing components, improves testing efficiency, and allows for stacking and lamination tests of FIBCs after loading and filling test materials after the pushing mechanism is adjusted to its maximum size, in order to detect the stacking force parameters of FIBCs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the first state of the pushing mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the second state of the pushing mechanism of this utility model;

[0020] Figure 4This is a cross-sectional view of the movable collar and the limiting ring of this utility model;

[0021] Figure 5 This is a schematic diagram of the connection structure between the fixed beam and the V-shaped rod of this utility model;

[0022] Figure 6 This is a sectional view of the connection between the fixed beam and the telescopic beam of this utility model;

[0023] Figure 7 This is a schematic diagram of the V-shaped rod and telescopic beam structure of this utility model;

[0024] Figure 8 This is a schematic diagram of the connecting rod structure of this utility model.

[0025] In the diagram: 1. Gantry frame; 2. Hydraulic station; 3. Main control box; 4. Frame; 5. Hydraulic cylinder; 6. Hanger; 7. Piston rod; 8. Pushing mechanism; 9. Movable collar; 10. Fixed collar; 11. Fixed beam; 12. V-shaped rod; 13. Telescopic beam; 14. Connecting rod; 15. Linkage rod; 16. Hook; 17. Positioning groove; 18. Shaft seat; 19. Mounting hole; 20. Positioning ball; 21. Limiting ring; 22. Handwheel; 23. Guide rail; 24. Guide groove; 25. Limiting block; 26. Slide groove. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figures 1-8As shown, this utility model provides a quality inspection device for the production of container bags, including a gantry frame 1 and a hydraulic station 2. The hydraulic station 2 is located on one side of the gantry frame 1. A main control box 3 is fixedly connected to one side of the gantry frame 1. The hydraulic station 2 is electrically connected to the main control box 3 via a cable. A frame 4 is fixedly connected inside the gantry frame 1. A hydraulic cylinder 5 is fixedly connected to the frame 4. The hydraulic cylinder 5 is connected to the hydraulic station 2 via a hydraulic pipe. A hanger 6 is fixedly connected to the bottom of the frame 4. A piston rod 7 is movably connected inside the hydraulic cylinder 5, and one end of the piston rod 7 extends to a position below the hanger 6 and is provided with a pushing mechanism 8. The pushing mechanism 8 also includes a movable collar 9 and a fixed sleeve. Ring 10 and movable collar 9 are inserted and connected to the outside of piston rod 7. Fixed collar 10 is fixedly connected to the outside of piston rod 7 located below movable collar 9. Multiple mounting holes 19 are opened on the inner side of movable collar 9. Positioning steel balls 20 are inserted and connected in the mounting holes 19. Limiting ring 21 is threadedly connected to the outside of movable collar 9. Several fixed beams 11 are fixedly connected to the outside of fixed collar 10. A V-shaped rod 12 is provided at one end of fixed beam 11. A telescopic beam 13 is fixedly connected to the side of V-shaped rod 12 relative to piston rod 7. Telescopic beam 13 is movably connected to fixed beam 11. A connecting rod 14 is movably connected between two adjacent V-shaped rods 12.

[0028] like Figure 1 As shown, several hooks 16 are fixedly connected to the bottom of the hanger 6 to enable the lifting operation of the slings of the container bag.

[0029] like Figures 2-3 As shown, the piston rod 7 has multiple annular positioning grooves 17 on its outer side, which allow multiple positioning steel balls 20 to be locked into the positioning grooves 17 after being limited by the limiting ring 21, thereby achieving rapid limiting of the movable collar 9.

[0030] like Figures 2-8As shown, multiple bearing seats 18 are fixedly connected to the outer side of the movable collar 9, providing connection points for connecting the movable collar 9 to the telescopic beam 13 via the connecting rod 15. The diameter of one side of the mounting hole 19 is smaller than the diameter of the positioning steel ball 20, thereby preventing the positioning steel ball 20 from falling out of the side of the mounting hole 19 away from the piston rod 7 after the limiting ring 21 moves away from the mounting hole 19. The bottom of the limiting ring 21 is provided with a slope, so that after the limiting ring 21 moves away from the mounting hole 19, the movable collar 9 can be moved up and down, thereby causing the positioning steel ball 20 to exit from the corresponding positioning groove 17. After being moved outward, the piston rod 7 is limited by its outer side and retracts into the mounting hole 19. A handwheel 22 is fixedly connected to the outer side of the limiting ring 21. When the handwheel 22 is manually turned, it causes the limiting ring 21 to rotate in the direction of the mounting hole 19 on the outer side of the movable collar 9. This causes the limiting ring 21 to simultaneously press multiple positioning steel balls 20 towards the piston rod 7, so that the outer sides of the multiple positioning steel balls 20 are simultaneously engaged in the corresponding piston rod 7, achieving rapid and stable limiting of the movable collar 9. Guide rails 23 are fixedly connected to both sides of the fixed beam 11, and the telescopic beam 13 has two... Each side is provided with a guide groove 24, which is slidably connected to the guide rail 23. The movement of the telescopic beam 13 on the guide rail 23, in conjunction with the movable collar 9 and connecting rod 15, enables the movement of the V-shaped rod 12. Several limiting blocks 25 are fixedly connected to the inner side of the V-shaped rod 12. Several sliding grooves 26 are provided on the inner side of the connecting rod 14. The connecting rod 14 is inserted into two adjacent V-shaped rods 12, and the sliding grooves 26 are slidably connected to the corresponding limiting blocks 25. When multiple V-shaped rods 12 move and expand synchronously to one side, the connecting rod 14 can move relative to the corresponding limiting blocks 25. The gap between two adjacent V-shaped rods 12 is filled to improve the integrity of the combined structure of multiple V-shaped rods 12, telescopic beam 13, and connecting rod 14. A connecting rod 15 is rotatably connected inside the bearing seat 18. The end of the connecting rod 15 away from the bearing seat 18 is rotatably connected to the middle position of the corresponding V-shaped rod 12. When the height of the movable collar 9 is adjusted, multiple V-shaped rods 12 can be pushed and pulled simultaneously through multiple connecting rods 15, thereby enabling multiple V-shaped rods 12 and connecting rods 14 to expand or retract and form rectangular structures of different areas to adapt to different sizes of container bags.

[0031] It should be noted that this utility model is a quality inspection device for the production of FIBCs (Flexible Intermediate Bulk Containers). Before using this device, the state of the pushing mechanism 8 should be adjusted according to the size of the FIBC to be inspected. That is, the handwheel 22 is manually turned to drive the limiting ring 21 to rotate outside the movable collar 9, so that the limiting ring 21 moves away from the mounting hole 19. At this time, the positioning steel ball 20 loses the compression of the limiting ring 21 and can move along the mounting hole 19, pushing the movable collar 9 to move up and down along the piston rod 7. After adjusting to a suitable height, the handwheel 22 is turned in the opposite direction to move the limiting ring 21 towards the mounting hole 19. The limiting ring 21 compresses the positioning steel ball 20 through the slope, so that the positioning steel ball 20 is inserted into the positioning groove 17 outside the piston rod 7, thus completing the fixation of the movable collar 9. During the movement of the movable collar 9, the outer bearing 18 drives the connecting rod 15 to move. The connecting rod 15 pushes and pulls the middle of the V-shaped rod 12, causing the V-shaped rod 12 to move away from or closer to the piston rod 7. When the V-shaped rod 12 moves, the telescopic beam 13 on one side slides along the guide rails 23 on both sides of the fixed beam 11. At the same time, the adjacent V-shaped rod 12 drives the limiting block 25 to slide in the groove 26 of the corresponding connecting rod 14, filling the gap between the adjacent V-shaped rods 12. This allows the V-shaped rod 12, telescopic beam 13, and connecting rod 14 to form a rectangular structure that matches the size of the container bag. At this time, the container bag containing simulated filler can be transferred to the position below the pushing mechanism 8 to realize the simulated stacking and pressing test of the container bag.

[0032] During testing, simulated filler is first filled into the container bag, with the filling amount controlled at half of the total volume of the container bag to ensure that it matches the stress base under actual loading scenarios. After filling, a steel plate that is perfectly matched to the current top opening size of the container bag is taken and laid flat on the surface of the filler. The steel plate must cover the entire area of ​​the filler to avoid the filler overflowing from the edge when pressure is applied due to partial uncovering. Then, the container bag is lifted by lifting devices such as forklifts, and the lifting straps of the container bag are hung on the hooks 16 at the bottom of the lifting frame 6. The pushing mechanism 8 is then inserted into the container bag.

[0033] Subsequently, the hydraulic station 2 is started through the main control box 3. The hydraulic station 2 supplies hydraulic oil to the hydraulic cylinder 5 through the hydraulic pipe, pushing the piston rod 7 inside the hydraulic cylinder 5 to extend downward. The piston rod 7 drives the pushing mechanism 8 to move downward synchronously, so that the combined structure of the V-shaped rod 12, telescopic beam 13, and connecting rod 14 of the pushing mechanism 8 contacts the bottom of the container bag and applies pressure. During the pressure application process, the pushing mechanism 8 simulates the uniform pressure of the goods on the base fabric after the container bag is filled, so that the base fabric generates overall tension. At this time, the connection point between the sling and the base fabric bears the combined action of overall tension and local tension. The main control box 3 monitors the pressure data of the hydraulic cylinder 5 in real time and records the state of the container bag during the pushing process. If the base fabric tears or the connection point between the sling and the base fabric falls off, the staff immediately controls the hydraulic station 2 to stop the oil supply through the main control box 3, thereby judging whether the quality of the container bag is qualified based on the data during the testing process and the state of the container bag.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quality detection device for a bag production, characterized in that: Including gantry (1) and hydraulic station (2), the hydraulic station (2) is arranged on one side of the gantry (1), one side of the gantry (1) is fixedly connected with the main control box (3), the hydraulic station (2) is electrically connected with the main control box (3) through the cable, the gantry (1) is fixedly connected with the rack (4) in, the hydraulic cylinder (5) is fixedly connected on the rack (4), the hydraulic cylinder (5) is connected with the hydraulic station (2) through the hydraulic pipe, the rack (4) bottom is fixedly connected with the hanger (6), the piston rod (7) is movably connected in the hydraulic cylinder (5), and one end of the piston rod (7) extends to the position below the hanger (6) and is provided with the push mechanism (8), the push mechanism (8) further includes movable collar (9) and fixed collar (10), the movable collar (9) is connected on the outer side of the piston rod (7), the fixed collar (10) is fixedly connected on the outer side of the piston rod (7) at the position below the movable collar (9), a plurality of mounting holes (19) are formed in the inner side of the movable collar (9), the positioning steel ball (20) is insertedly connected in the mounting hole (19), the limit ring (21) is screwedly connected on the outer side of the movable collar (9), a plurality of fixed beams (11) are fixedly connected on the outer side of the fixed collar (10), one end of the fixed beam (11) is provided with the V-shaped rod (12), the telescopic beam (13) is movably connected on the fixed beam (11) and is fixedly connected with the V-shaped rod (12) on one side of the piston rod (7), the connecting rod (14) is movably connected between the two adjacent V-shaped rods (12).

2. The quality detection device for bag-on-valve production according to claim 1, characterized in that: The hanger (6) bottom is fixedly connected with a plurality of hooks (16).

3. The quality detection device for bag-on-valve production according to claim 1, characterized in that: A plurality of annular positioning grooves (17) are formed on the outer side of the piston rod (7).

4. The quality detection device for bag production according to claim 1, characterized in that: A plurality of shaft seats (18) are fixedly connected on the outer side of the movable collar (9), and the diameter of one side of the mounting hole (19) is smaller than the diameter of the positioning steel ball (20).

5. The quality detection device for bag-on-valve production according to claim 4, characterized in that: The limit ring (21) is provided with a slope on the bottom, and a hand wheel (22) is fixedly connected on the outer side of the limit ring (21).

6. The quality detection device for bag-on-valve production according to claim 1, characterized in that: The fixed beam (11) is fixedly connected with the guide rail (23) on both sides, the telescopic beam (13) is provided with the guide groove (24) on both sides, and the guide groove (24) is slidably connected on the guide rail (23).

7. The quality detection device for bag-on-valve production according to claim 1, characterized in that: A plurality of limit blocks (25) are fixedly connected on the inner side of the V-shaped rod (12), a plurality of sliding grooves (26) are formed on the inner side of the connecting rod (14), the connecting rod (14) is insertedly connected in the two adjacent V-shaped rods (12), and the sliding groove (26) is slidably connected on the corresponding limit block (25).

8. The quality detection device for bag production according to claim 4, characterized in that: The connecting rod (15) is rotatably connected in the V-shaped rod (12) at the middle position away from the shaft seat (18).

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