A packaging structure for fabric

Abstract

This invention relates to the field of product packaging technology, specifically a packaging structure for fabrics. It includes a housing, with two rotating wheels rotatably connected to the inner wall of the housing. Four hollow tubes are rotatably connected between the two rotating wheels. Multiple mating plates are fixedly connected to the outer wall of each hollow tube. A servo motor capable of driving the rotating wheels is also fixedly installed on the inner wall of the housing. A limiting mechanism for fixing the packaging bag is fixedly installed on the outer wall of each mating plate. A detection mechanism for checking for leaks in the packaging bag is also fixedly installed on the outer wall of the mating plate. An air extraction mechanism for evacuating air from the inside of the packaging bag is also fixedly installed on the inner wall of the housing. The limiting mechanism first limits the packaging bag, realizing automated continuous operation of fabric vacuum packaging. This not only reliably seals and vacuums the packaging bag but also accurately detects minor damage and automatically sorts out defective products, effectively avoiding problems such as dampness and mildew in clothing caused by damaged packaging, thus improving the stability of packaging quality.

Description

Technical Field

[0001] This invention relates to the field of product packaging technology, specifically a packaging structure for fabrics. Background Technology

[0002] In the field of vacuum packaging for textiles and clothing, the packaging structure currently widely used mainly consists of vacuum-sealed packaging bags and air extraction devices. By removing air from the bag to create negative pressure, the clothing can be compressed and stored, while isolating external moisture and dust to protect the quality of the clothing.

[0003] However, existing technologies have significant shortcomings: during the vacuuming process, packaging bags may tear or break due to defects in their own materials. Existing packaging structures lack the ability to detect such damage. Once damage occurs, outside air will gradually seep in, causing the vacuum to fail. Clothing is then susceptible to dampness, mildew, or stains. Often, the problem is only discovered when the packaging is opened, making timely repair impossible and resulting in damage and loss of clothing. Therefore, how to effectively detect whether packaging bags are damaged has become a key issue in improving the reliability of fabric vacuum packaging. Summary of the Invention

[0004] The purpose of this invention is to provide a packaging structure for fabrics to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A packaging structure for fabric includes a housing, with two rotating wheels rotatably connected to the inner wall of the housing, the two rotating wheels being fixedly connected, and four hollow tubes rotatably connected between the two rotating wheels. Multiple mating plates are fixedly connected to the outer wall of each hollow tube, and a servo motor capable of driving the rotating wheels to rotate is also fixedly installed on the inner wall of the housing.

[0007] Each of the mating plates is fixedly equipped with a limiting mechanism to secure the packaging bag on its outer wall. The outer wall of the mating plate is also fixedly equipped with a detection mechanism to detect whether the packaging bag has a leak. The inner wall of the housing is also fixedly equipped with a suction mechanism to extract air from the packaging bag. The limiting mechanism first limits the inside of the packaging bag, and then the suction mechanism extracts gas from the packaging bag. The detection mechanism detects whether the packaging bag has a leak.

[0008] As a further aspect of this solution, the limiting mechanism includes a connecting plate, which is fixedly connected to the outer wall of the mating plate. Two elastic bands are fixedly connected to the outer wall of the connecting plate, and an elastic piece is fixedly connected to the bottom of each elastic band. Two rectangular openings are formed on the outer wall of the connecting plate, and the outer wall of each elastic piece abuts against the inner wall of an adjacent rectangular opening. Two mating electromagnetic blocks are fixedly connected between the two elastic pieces, and the two mating electromagnetic blocks abut against each other. A curved block is fixedly connected to one end of the two mating electromagnetic blocks, and the two curved blocks abut against each other.

[0009] As a further aspect of this solution, the detection mechanism includes a mounting box, which is welded and fixed to the outer wall of the connecting plate. A suction tube is fixedly connected to the bottom of the mounting box, and the outer wall of the suction tube abuts against the inner walls of two curved blocks. A first mating tube is fixedly connected to the upper end of the mounting box, and each of the first mating tubes is fixedly connected to a nearby hollow tube. A fixing plate is fixedly connected to the inner wall of the first mating tube, and the outer wall of the fixing plate has multiple holes. A first electromagnetic block is provided on the inner wall of the first mating tube.

[0010] As a further aspect of this solution, a plurality of blocking blocks are fixedly connected to the upper end of the first electromagnetic block, one of which has its outer wall slidably connected to the inner wall of the first mating pipe. Two elastic plates are fixedly connected to the top of the inner wall of the mounting box, and a pressure sensor is fixedly connected to the outer wall of the elastic plates. A rubber ball is fixedly connected to the top of the inner wall of the mounting box, and a moving rod is fixedly connected to the inner wall of the rubber ball. A second electromagnetic block is fixedly connected to the outer wall of the moving rod, and two connecting rods are fixedly connected to the upper end of the moving rod.

[0011] As a further aspect of this solution, a movable block is fixedly connected to the bottom of each connecting rod. Multiple rotating arms are rotatably connected to the outer wall of the movable block. Multiple reset torsion springs are also snapped onto the outer wall of the movable block. An abutment block is fixedly connected to the upper torsion arm of each reset torsion spring. The upper end of each abutment block abuts against the bottom of a nearby rotating arm. Two mating rings are slidably connected to the outer wall of the connecting plate. Each mating ring is fixedly connected to the outer wall of a nearby elastic plate by a connecting rope.

[0012] As a further aspect of this solution, the bottom of the mating ring is fixedly connected to two connecting strips, and a movable ring is slidably connected between the outer walls of the two connecting strips. The bottom of the movable ring is fixedly connected to a second limiting block, and the outer wall of the connecting strip is fixedly connected to a first limiting block.

[0013] As a further aspect of this solution, each of the mating electromagnetic blocks has a heating strip with a reset function rotatably connected to its outer wall. The outer wall of the heating strip is fixedly connected to two second mating arms, and each second mating arm abuts against the outer wall of a nearby second limiting block.

[0014] As a further aspect of this solution, one of the pressure sensor signal output terminals is connected to the control terminals of two cooperating electromagnetic blocks, and the other pressure sensor signal output terminal is connected to the control terminals of the second electromagnetic block and the first electromagnetic block.

[0015] As a further aspect of this solution, the air extraction mechanism includes a rotating ring, which is fixedly connected to the outer wall of a nearby rotating wheel. Four abutment pipes are fixedly connected to the end of the rotating ring away from the rotating wheel. Each abutment pipe is connected to a nearby hollow pipe. An elastic one-way valve is fixedly installed inside each abutment pipe. A connecting circular plate is fixedly connected to the inner wall of the housing, and a curved strip is fixedly connected to the outer wall of the connecting circular plate.

[0016] As a further aspect of this solution, a mating strip is fixedly connected to the outer wall of the curved strip. The ends of the curved strip and the mating strip near the rotating ring abut against the outer walls of the adjacent abutting pipe and the elastic one-way valve. A vacuum pump is also fixedly installed on the inner wall of the housing. A connecting pipe is fixedly connected to the outlet of the vacuum pump. The end of the connecting pipe away from the vacuum pump is fixedly connected to the outer wall of the curved strip, and the connecting pipe is connected to an adjacent abutting pipe.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. When this invention is used, the vacuuming and damage detection functions realize the automated continuous operation of fabric vacuum packaging. It can reliably complete the sealing and vacuuming of the packaging bag, accurately detect minor damage and automatically sort out unqualified products, effectively avoid problems such as clothing getting damp and mildew caused by damaged packaging, and improve the stability of packaging quality.

[0019] 2. When using this invention, the entire process, from limiting and fixing the packaging bag, vacuuming, detecting damage, heat sealing and sorting of qualified products, and automatic rejection of unqualified products, can simultaneously process multiple packaging bags, completing vacuum wrapping and damage detection of multiple garments, with high efficiency. Attached Figure Description

[0020] Figure 1 This is a front view of a fabric packaging structure.

[0021] Figure 2 This is a schematic diagram of the internal structure of the casing in a fabric packaging structure.

[0022] Figure 3This is a schematic diagram of the position and structure of the hollow tube in a packaging structure for fabric.

[0023] Figure 4 This is a schematic diagram of the internal structure of the outer shell in a fabric packaging structure.

[0024] Figure 5 This is a schematic diagram of the internal structure of a circular box installed in a fabric packaging structure.

[0025] Figure 6 This is a schematic diagram of a detection mechanism in a fabric packaging structure.

[0026] Figure 7 This is a schematic diagram of a limiting mechanism in a packaging structure for fabrics.

[0027] Figure 8 This is a schematic diagram of the structure of a rubber ball in a fabric packaging structure.

[0028] Figure 9 This is a schematic diagram of the internal structure of the first fitting tube in a packaging structure for fabrics.

[0029] Figure 10 This is a schematic diagram of the position of the rotating arm in a packaging structure for fabrics.

[0030] Figure 11 This is a schematic diagram of the position of the elastic sheet in a packaging structure for fabric.

[0031] Figure 12 for Figure 5 Enlarged diagram of point A in the diagram.

[0032] Figure 13 This is a schematic diagram of the position of the connecting strip in a packaging structure for fabric.

[0033] Figure 14 This is a schematic diagram of the air extraction mechanism in a packaging structure for fabrics.

[0034] Figure 15 This is a schematic diagram showing the position of a flexible one-way valve in a fabric packaging structure.

[0035] In the diagram: 1. Housing; 2. Control panel; 3. Rotary wheel; 4. Connecting column; 5. Secondary pulley; 6. Drive belt; 7. Main pulley; 8. First collection box; 9. Second collection box; 10. Hollow tube; 11. Servo motor; 12. Mating plate; 13. Mating electromagnetic block; 14. Connecting plate; 15. Rectangular opening; 16. Elastic sheet; 17. Elastic band; 18. Moving rod; 19. Mounting round box; 20. First mating arm;

[0036] 21. Curved block; 22. Straw; 23. Pressure sensor; 24. Elastic sheet; 25. Moving block; 26. Connecting rod; 27. First mating tube; 28. Return torsion spring; 29. ​​Abutment block; 30. Rotating arm; 31. Mating ring; 32. Connecting strip; 33. First limiting block; 34. Moving ring; 35. Second limiting block; 36. Second mating arm; 37. Heating strip; 38. Connecting rope; 39. Vacuum pump;

[0037] 40. Connecting pipe; 41. Connecting circular plate; 42. Second mating pipe; 43. Curved strip; 44. Mating strip; 45. Flexible one-way valve; 46. Abutment pipe; 47. Rotating ring; 48. Rubber ball; 49. Fixing plate; 50. Block; 51. First electromagnetic block; 52. Second electromagnetic block; 53. Outer shell; 101. Limiting mechanism; 201. Detection mechanism; 301. Air extraction mechanism. Detailed Implementation

[0038] 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.

[0039] Example 1: Please refer to Figures 1-4 As shown in the embodiment of the present invention, a packaging structure for fabric includes a housing 1. A control panel 2 is fixedly installed on the outer wall of the housing 1. Two rotating wheels 3 are rotatably connected to the inner wall of the housing 1 via a rotating shaft. The two rotating wheels 3 are fixedly connected to each other via a connecting column 4. Four hollow tubes 10 are also rotatably connected between the two rotating wheels 3 via a rotating shaft. Multiple mating plates 12 are fixedly connected to the outer wall of each hollow tube 10. Specifically, when the rotating wheels 3 rotate and drive all the hollow tubes 10 to move, under the action of the gravity of the mating plates 12, no matter how the hollow tubes 10 are driven to move by the rotating wheels 3, all the mating plates 12 will always remain in a vertical state. The inner wall of the housing 1 is also fixedly installed with a movable... The servo motor 11 rotates the rotating wheel 3. Specifically, the output end of the servo motor 11 is fixedly connected to the main pulley 7 by bolts. The outer wall of the wheel 3 near the servo motor 11 is fixedly connected to the auxiliary pulley 5. A transmission belt 6 is tensioned between the auxiliary pulley 5 and the main pulley 7. A tensioner is also fixedly installed on the inner wall of the housing 1. The abutting wheel of the tensioner abuts against the outer wall of the transmission belt 6 (the tensioner is not shown in the figure). The tensioner is existing technology and will not be described in detail here. When the transmission belt 6 is used for a long time, it will become loose. The tension of the transmission belt 6 can be strengthened by adjusting the position of the abutting wheel of the tensioner and increasing the pressure on the outer wall of the transmission belt 6.

[0040] Each mating plate 12 has a fixed limiting mechanism 101 on its outer wall to fix the packaging bag (the packaging bag is a thin co-extruded PE bag, which only requires a temperature between 160 and 200 degrees Celsius to heat seal, and the time is only 0.3-1 second). The outer wall of the mating plate 12 also has a fixed detection mechanism 201 to detect whether the packaging bag has a leak. The inner wall of the housing 1 also has a fixed suction mechanism 301 to extract air from the packaging bag. The limiting mechanism 101 first limits the packaging bag, and then the suction mechanism 301 extracts gas from the inside of the packaging bag. The detection mechanism 201 detects whether the packaging bag has a leak. The outer wall of the mating plate 12 is fixedly connected to the outer shell 53. The limiting mechanism 101 and the detection mechanism 201 are both located inside the outer shell 53. The bottom of the inner wall of the housing 1 is abutted by the second collection box 9 and the first collection box 8. The second collection box 9 collects unqualified packaging bags, and the first collection box 8 collects qualified packaging bags.

[0041] Example 2: Please refer to Figures 4-7 As shown, the limiting mechanism 101 includes a connecting plate 14, which is fixedly connected to the outer wall of the mating plate 12 by bolts. Two elastic bands 17 are fixedly connected to the outer wall of the connecting plate 14. Each elastic band 17 has an elastic piece 16 fixedly connected to its bottom. The elastic piece 16 is V-shaped. A first mating arm 20 is fixedly connected between the two elastic pieces 16. The outer wall of the first mating arm 20 passes through the inside of the outer shell 53, facilitating the downward movement of the elastic piece 16 by the operator. Two rectangular openings 15 are opened on the outer wall of the connecting plate 14. The outer wall of each elastic piece 16 abuts against the inner wall of the adjacent rectangular opening 15. Next, the elastic sheet 16 is in a contracted and stored state. The tensile elastic coefficient of the elastic band 17 is greater than the elastic coefficient of the elastic sheet 16 when it opens and closes. Two mating electromagnetic blocks 13 are fixedly connected between the two elastic sheets 16. The two mating electromagnetic blocks 13 abut against each other. Specifically, when the two mating electromagnetic blocks 13 are energized, since the opposite surfaces of the two mating electromagnetic blocks 13 repel each other, the two mating electromagnetic blocks 13 will disengage after being energized. A curved block 21 is fixedly connected to one end of each of the two mating electromagnetic blocks 13. The two curved blocks 21 abut against each other and merge into a "circular tube".

[0042] Please see Figures 3 to 13 As shown, the testing mechanism 201 includes a mounting box 19, which is welded and fixed to the outer wall of the connecting plate 14. A suction tube 22 is fixedly connected to the bottom of the mounting box 19, and the outer wall of the suction tube 22 abuts against the inner walls of the two curved blocks 21 (please refer to...). Figure 5The upper end of the mounting box 19 is fixedly connected to a first mating tube 27. Each first mating tube 27 is fixedly connected to a nearby hollow tube 10 via a pipe (not shown in the figure). A fixing plate 49 is fixedly connected to the inner wall of the first mating tube 27. The outer wall of the fixing plate 49 has multiple holes. A first electromagnetic block 51 is provided on the inner wall of the first mating tube 27. Multiple blocking blocks 50 are fixedly connected to the upper end of the first electromagnetic block 51, and each blocking block 50 is located directly below a nearby hole. The outer wall of one of the blocking blocks 50 is slidably connected to the inner wall of the first mating tube 27. Specifically, a sliding groove is provided on the inner wall of the first mating tube 27, and the corresponding blocking block 50 is slidably connected to the inner wall of the sliding groove. This can limit the first electromagnetic block 51 and all the blocking blocks 50 to prevent rotation (please refer to...). Figure 9 );

[0043] Two elastic plates 24 are fixedly connected to the top of the inner wall of the mounting box 19. A pressure sensor 23 (specifically, the pressure sensor 23 is the DPS-201 hybrid type from the XINGYUDPS-2 series) is fixedly connected to the outer wall of the elastic plates 24. A rubber ball 48 is fixedly connected to the top of the inner wall of the mounting box 19. The rubber ball 48 is made of rubber and has good elasticity. A moving rod 18 is fixedly connected to the inner wall of the rubber ball 48. A second electromagnetic block 52 is fixedly connected to the outer wall of the moving rod 18, and the second electromagnetic block 52 is located inside the first mating tube 27. The outer wall of the moving rod 18 passes through the fixed plate 49 and the first electromagnetic block 51. Specifically, the first electromagnetic block 51 has a circular opening inside, and the outer wall of the moving rod 18 passes through the circular opening. A gap is left between the inner wall of the circular opening and the outer wall of the moving rod 18 so that when the moving rod 18 moves up and down, it will not affect the first electromagnetic block 51. The outer wall of the moving rod 18 slides through the interior of the mounting box 19 and the first mating tube 27 (please refer to...). Figure 9 The upper end of the moving rod 18 is fixedly connected to two connecting rods 26 via connecting arms. The bottom of each connecting rod 26 is fixedly connected to a moving block 25. The outer wall of the moving block 25 is rotatably connected to multiple rotating arms 30 via a rotating shaft. The multiple rotating arms 30 are circumferentially distributed on the outer wall of the moving block 25. The outer wall of the moving block 25 is also clamped with multiple return torsion springs 28. The elastic coefficient of the return torsion spring 28 is less than the tensile elastic coefficient of the elastic band 17. Specifically, the outer wall of the moving block 25 has multiple slots. Each slot is located directly below a nearby rotating arm 30. Each return torsion spring 28 is clamped in the inner wall of a nearby slot. The upper torsion arm of each return torsion spring 28 is fixedly connected to an abutment block 29. The upper end of each abutment block 29 abuts against the bottom of a nearby rotating arm 30.

[0044] Two mating rings 31 are slidably connected to the outer wall of the connecting plate 14. Each mating ring 31 is located directly below a nearby movable block 25. Each mating ring 31 is fixedly connected to the outer wall of a nearby elastic piece 16 by a connecting rope 38, and the outer wall of the connecting rope 38 slides through the interior of the connecting plate 14. Two connecting strips 32 are fixedly connected to the bottom of the mating rings 31. A movable ring 34 is slidably connected between the outer walls of the two connecting strips 32. A second limiting block 35 is fixedly connected to the bottom of the movable ring 34 (please refer to...). Figure 13 Specifically, when the moving block 25 drives all the rotating arms 30 to pass through the interior of the mating ring 31 and the moving ring 34, when the outer walls of the rotating arms 30 and the mating ring 31 and the moving ring 34 abut against each other, all the rotating arms 30 will fold upwards and move closer together. When the rotating arms 30 disengage from the mating ring 31 and the outer walls of the moving ring 34, the rotating arms 30 will rotate and reset under the action of gravity. When the rotating arms 30 reset, they will not abut against or get stuck on the outer walls of the connecting bar 32 and the second limiting block 35. The outer wall of the connecting bar 32 is fixedly connected to the first limiting block 33. The outer wall of each mating electromagnetic block 13 Each heating strip 37 with a reset function is rotatably connected via a rotating shaft. Each heating strip 37 is engaged with a torsion spring between itself and the outer wall of a nearby cooperating electromagnetic block 13. At this time, the cooperating torsion spring is in a charged state. There is a gap between the two heating strips 37 and they are not in contact. When the two heating strips 37 are in contact, the control panel 2 will issue a command to the heating strip 37 to power it on and heat it to 160 degrees Celsius. The heating will stop after one second. Two second cooperating arms 36 are fixedly connected to the outer wall of the heating strip 37. Each second cooperating arm 36 abuts against the outer wall of a nearby second limiting block 35.

[0045] One pressure sensor 23 has its signal output terminal connected to the control terminals of two mating electromagnetic blocks 13, and the other pressure sensor 23 has its signal output terminal connected to the control terminals of the second electromagnetic block 52 and the first electromagnetic block 51. Specifically, when the inside of the packaging bag, the straw 22, the mounting box 19, and the first mating tube 27 are all under negative pressure, the rubber ball 48 expands due to the negative pressure, causing the elastic sheet 24 to bend and making the pressure sensor 23 abut against the inner wall of the mounting box 19. The expanded rubber ball 48 will drive the moving rod 1. 8 and the second electromagnetic block 52 descend downward in the inner wall of the first mating tube 27. One of the pressure sensors 23 will cause the second electromagnetic block 52 and the first electromagnetic block 51 to be energized and attract each other. The first electromagnetic block 51 drives the block 50 to abut against the bottom of the hole. If air is sucked into the first mating tube 27, the packaging bag and the inside of the mounting box 19 will have an attractive force on the block 50. It is necessary to set the magnetic attraction between the second electromagnetic block 52 and the first electromagnetic block 51 after being energized to be less than the attraction force generated by the negative pressure inside the packaging bag and the mounting box 19.

[0046] Please see Figure 3 , Figures 14-15As shown, the suction mechanism 301 includes a rotating ring 47, which is fixedly connected to the outer wall of a nearby rotating wheel 3. Four abutment pipes 46 are fixedly connected to the end of the rotating ring 47 away from the rotating wheel 3. The four abutment pipes 46 are circumferentially distributed on the outer wall of the rotating ring 47. Each abutment pipe 46 is connected to a nearby hollow pipe 10 via a second mating pipe 42. A flexible one-way valve 45 (the flexible one-way valve 45 is existing technology and will not be described in detail here) is fixedly installed inside each abutment pipe 46. A connecting circular plate 41 is fixedly connected to the inner wall of the housing 1, and a curved... The outer wall of the curved strip 43 is fixedly connected to a mating strip 44. The width of the curved strip 43 is greater than the diameter of the cross-section of the abutting pipe 46, and the width of the mating strip 44 is less than the diameter of the cross-section of the abutting pipe 46. The ends of the curved strip 43 and the mating strip 44 near the rotating ring 47 are in contact with the outer wall of the adjacent abutting pipe 46 and the elastic one-way valve 45. The inner wall of the housing 1 is also fixedly installed with a vacuum pump 39. The outlet of the vacuum pump 39 is fixedly connected to a connecting pipe 40. The end of the connecting pipe 40 away from the vacuum pump 39 is fixedly connected to the outer wall of the curved strip 43, and the connecting pipe 40 is connected to an adjacent abutting pipe 46.

[0047] The working principle of this invention is:

[0048] When using this invention, the operator moves the two elastic pieces 16 downwards simultaneously via the first cooperating arm 20. As the elastic pieces 16 gradually detach from the inner wall of the rectangular opening 15, they gradually "open." At this time, the two cooperating electromagnetic blocks 13 disengage, allowing the opening of the bag containing clothing to pass through the outer wall of the straw 22, with the opening higher than the cooperating electromagnetic blocks 13. Then, the operator releases the pull on the first cooperating arm 20, and the elastic band 17 causes the elastic pieces 16 to return to their original position. When the outer wall of the elastic piece 16 abuts against the inner wall of the rectangular opening 15, the elastic piece 16 causes the two cooperating electromagnetic blocks 13 to abut against each other. At this time, the opening of the bag is clamped by the two cooperating electromagnetic blocks 13 and the curved block 21, and the straw 22 is located inside the bag.

[0049] The servo motor 11 is started, driving the main pulley 7 to rotate. The main pulley 7 drives the auxiliary pulley 5 to rotate via the transmission belt 6. The auxiliary pulley 5 drives the two rotating wheels 3 to rotate 90 degrees together and then stop. The rotating wheels 3 drive all the mating plates 12 on the outer wall of the hollow tube 10 to move. At this time, the abutment pipe 46, which is connected to the hollow tube 10, abuts against the outer wall of the curved strip 43. The abutment pipe 46 is also connected to the connecting pipe 40. The vacuum pump 39 will evacuate the inside of the abutment pipe 46 through the connecting pipe 40. The outer wall of the abutment pipe 46 and the outer wall of the elastic one-way valve 45 will both abut against... The outer wall of the curved strip 43 abuts, so the elastic one-way valve 45 is in the open state at this time, and the corresponding hollow tube 10 will also be sucked. The hollow tube 10 will suck the inside of all the first mating tubes 27 and the mounting round box 19 connected to it. The mounting round box 19 will suck the inside of the packaging bag through the suction tube 22. At this time, the gas inside the packaging bag will be sucked away. For example, when air is sucked out of five packaging bags, the vacuum pump 39 at the rated power takes ten seconds to suck out the air. When air is sucked out of ten packaging bags, the time is twenty seconds, and so on.

[0050] After the air in the packaging bag is completely removed, the rubber ball 48 inside the mounting box 19 will gradually expand under negative pressure. As the rubber ball 48 expands, it will drive the moving rod 18 to move downward. The moving rod 18 will drive the two connecting rods 26 to move downward. The connecting rods 26 will drive the moving block 25 to pass through the interior of the mating ring 31 and the moving ring 34. At this time, the rotating arm 30 will fold upward and pass through the interior of the mating ring 31 and the moving ring 34 together. When the rotating arm 30 disengages from the inner wall of the moving ring 34 and re-engages with the upper end of the abutment block 29 due to gravity, the rotating arm 30 is located directly below the moving ring 34.

[0051] Meanwhile, the expansion of the rubber ball 48 will also compress the two elastic plates 24 and the pressure sensor 23. When the outer walls of the two pressure sensors 23 abut against the inner wall of the mounting box 19, one of the pressure sensors 23 will cause the first electromagnetic block 51 and the second electromagnetic block 52 to be energized and attract each other, while the other pressure sensor 23 will be in the open state. When the pressure sensor 23 disengages from the inner wall of the mounting box 19, the two mating electromagnetic blocks 13 will be energized. At the same time as the moving rod 18 moves downward, the moving rod 18 will also drive the rubber ball 48 to move downward in the inner wall of the first mating tube 27. When the second electromagnetic block 52 approaches the first electromagnetic block 51, the first electromagnetic block 51 will drive the blocking block 50 to seal the hole in the outer wall of the fixing plate 49. Note that the entire The process is as follows: the moving block 25 first passes through the interior of the mating ring 31 and the moving ring 34, then the outer wall of the pressure sensor 23 abuts against the inner wall of the mounting box 19, then the second electromagnetic block 52 and the first electromagnetic block 51 are attracted to each other by being energized, and the blocking block 50 abuts against the hole. At this time, the rubber ball 48 is in an expanded state, which tightly makes the outer wall of the pressure sensor 23 abut against the inner wall of the mounting box 19. When the diameter of the rubber ball 48 shrinks along the axis by two to three millimeters, the elastic sheet 24 will reset due to the elastic force, causing the pressure sensor 23 to disengage from the inner wall of the mounting box 19. Since the second electromagnetic block 52 and the first electromagnetic block 51 are in a state of mutual attraction, the blocking block 50 will be pressed against the outer wall of the hole. At this time, the interior of the mounting box 19 and the interior of the packaging bag are in a state of closed negative pressure.

[0052] Once the suction time reaches the standard, the servo motor 11 is restarted. The servo motor 11 drives the auxiliary pulley 5 and all the rotating wheels 3 to rotate 90 degrees via the transmission belt 6. At this time, the outer wall of the corresponding abutment tube 46 remains in contact with the outer wall of the curved strip 43. The hollow tube 10 is under negative pressure, and the plug 50 remains in contact with the inner wall of the hole. When a small hole in one of the packaging bags leaks, air enters the mounting box 19 and the packaging bag. The rubber ball 48 will slowly contract. As long as the rubber ball 48 contracts by two to three millimeters, because the contraction range of the rubber ball 48 only needs to be within a certain range... Two to three millimeters, so a test time of more than ten seconds is sufficient to meet the test requirements. At this time, the two pressure sensors 23 will disengage from the inner wall of the mounting box 19. One of the pressure sensors 23 will energize the two mating electromagnetic blocks 13. The two mating electromagnetic blocks 13 will repel each other, and the elastic sheet 16 will "open". At this time, the packaging bag will fall into the second collection box 9. The other pressure sensor 23 will de-energize the second electromagnetic block 52 and the first electromagnetic block 51. Since the hollow tube 10 and the first mating tube 27 are in a negative pressure state, the block 50 will be attracted to the inner wall of the hole inside the fixing plate 49.

[0053] When the servo motor 11 continues to rotate, the servo motor 11 drives the auxiliary pulley 5 and all the rotating wheels 3 to rotate 90 degrees via the transmission belt 6. At this time, the corresponding abutment pipe 46 will drive the elastic one-way valve 45 to abut against the outer wall of the mating strip 44. Since the width of the mating strip 44 is smaller than the diameter of the cross-section of the abutment pipe 46, the abutment pipe 46 is no longer blocked by the curved strip 43. Therefore, air quickly enters the first mating pipe 27 and the hollow pipe 10. Due to the negative pressure inside the mounting box 19, the first mating pipe 27 will be sucked in. At this time, the block 50 will disengage from the hole. Because the suction force caused by the negative pressure is very large, the set magnetic attraction force between the first electromagnetic block 51 and the second electromagnetic block 52 is less than the suction force caused by the negative pressure. The rubber ball 48 shrinks and drives the moving rod 18 to reset. The moving rod 18 drives all the connecting rods 26 and the moving block 25 to reset upward. When the moving block 25 resets, it will bring All rotating arms 30 abut against the bottom of the moving ring 34. The moving ring 34 moves upward, causing the second limiting block 35 to disengage from the outer wall of the second mating arm 36. At this time, the mating torsion spring will cause the heating strip 37 to reset and abut against each other, heat-sealing the opening of the packaging bag. When the upper end of the moving ring 34 abuts against the bottom of the first limiting block 33, the moving ring 34 will be limited. When the moving block 25 continues to move upward, the rotating arm 30 will fold downward and squeeze the abutting block 29. The abutting block 29 will cause the reset torsion spring 28 to rotate and store power. When the rotating arm 30 disengages from the bottom of the moving ring 34, the rotating arm 30 will abut against the bottom of the mating ring 31. The mating ring 31 moves upward and is pulled downward by the connecting rope 38 and the elastic piece 16. When the elastic piece 16 moves downward, it will gradually open. At this time, the two mating electromagnetic blocks 13 disengage, and the packaging bag will fall into the inside of the first collection box 8.

[0054] Since the spring coefficient of the reset torsion spring 28 is less than the tensile coefficient of the elastic band 17, when the mating ring 31 moves upward a certain distance, all the rotating arms 30 will press and fold downward against the abutment block 29. The moving block 25 and all the rotating arms 30 will pass through the interior of the mating ring 31, and the moving rod 18 and the moving block 25 will complete the reset. At this time, the rotating wheel 3 continues to rotate ninety degrees, the elastic one-way valve 45 disengages from the abutment of the outer wall of the mating strip 44, and when the first mating arm 20 is pulled downward, the two elastic plates 16 open. At this time, the two mating electromagnetic blocks 13 drive the heating strip 37 to move, and the second limiting block 35 will fall back between the two second mating arms 36 under the action of gravity. When the mating electromagnetic block 13 closes, the second mating arm 36 will abut against the outer wall of the second limiting block 35 again, and the next cycle of packaging inspection can be carried out.

[0055] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A packaging structure for fabrics, comprising a housing (1), characterized in that, The inner wall of the housing (1) is rotatably connected to two rotating wheels (3), the two rotating wheels (3) are fixedly connected, and four hollow tubes (10) are rotatably connected between the two rotating wheels (3). Each hollow tube (10) has multiple mating plates (12) fixedly connected to its outer wall. The inner wall of the housing (1) is also fixedly installed with a servo motor (11) that can drive the rotating wheels (3) to rotate. Each of the mating plates (12) is fixedly installed with a limiting mechanism (101) for fixing the packaging bag on its outer wall. The mating plate (12) is also fixedly installed with a detection mechanism (201) for detecting whether the packaging bag has a leak. The inner wall of the housing (1) is also fixedly installed with a suction mechanism (301) for suctioning the inside of the packaging bag. The limiting mechanism (101) first limits the packaging bag, and then the suction mechanism (301) extracts gas from the packaging bag. The detection mechanism (201) detects whether the packaging bag has a leak. The limiting mechanism (101) includes a connecting plate (14), which is fixedly connected to the outer wall of the mating plate (12). Two elastic bands (17) are fixedly connected to the outer wall of the connecting plate (14). An elastic piece (16) is fixedly connected to the bottom of each elastic band (17). Two rectangular openings (15) are opened on the outer wall of the connecting plate (14). The outer wall of each elastic piece (16) abuts against the inner wall of a nearby rectangular opening (15). Two mating electromagnetic blocks (13) are fixedly connected between the two elastic pieces (16). The two mating electromagnetic blocks (13) abut against each other. A curved block (21) is fixedly connected to one end of each of the two mating electromagnetic blocks (13). The two curved blocks (21) abut against each other. The detection mechanism (201) includes a mounting box (19), which is welded and fixed to the outer wall of the connecting plate (14). A suction tube (22) is fixedly connected to the bottom of the mounting box (19). The outer wall of the suction tube (22) abuts against the inner wall of two curved blocks (21). A first mating tube (27) is fixedly connected to the upper end of the mounting box (19). Each first mating tube (27) is fixedly connected to a nearby hollow tube (10). A fixing plate (49) is fixedly connected to the inner wall of the first mating tube (27). Multiple holes are opened on the outer wall of the fixing plate (49). A first electromagnetic block (51) is provided on the inner wall of the first mating tube (27). The upper end of the first electromagnetic block (51) is fixedly connected to a plurality of plugs (50), one of which has an outer wall that is slidably connected to the inner wall of the first mating tube (27). The top of the inner wall of the mounting box (19) is fixedly connected to two elastic plates (24), the outer wall of the elastic plate (24) is fixedly connected to a pressure sensor (23), the top of the inner wall of the mounting box (19) is fixedly connected to a rubber ball (48), the inner wall of the rubber ball (48) is fixedly connected to a moving rod (18), the outer wall of the moving rod (18) is fixedly connected to a second electromagnetic block (52), and the upper end of the moving rod (18) is fixedly connected to two connecting rods (26).

2. The packaging structure for fabrics according to claim 1, characterized in that, Each of the connecting rods (26) has a fixedly connected movable block (25) at its bottom. The outer wall of the movable block (25) is rotatably connected to multiple rotating arms (30). The outer wall of the movable block (25) is also fitted with multiple reset torsion springs (28). The upper end of each reset torsion spring (28) is fixedly connected to an abutment block (29). The upper end of each abutment block (29) abuts against the bottom of a nearby rotating arm (30). The outer wall of the connecting plate (14) is also slidably connected to two mating rings (31). Each mating ring (31) is fixedly connected to the outer wall of a nearby elastic piece (16) by a connecting rope (38).

3. The packaging structure for fabrics according to claim 2, characterized in that, The bottom of the mating ring (31) is fixedly connected to two connecting strips (32), and a movable ring (34) is slidably connected between the outer walls of the two connecting strips (32). The bottom of the movable ring (34) is fixedly connected to a second limiting block (35), and the outer wall of the connecting strip (32) is fixedly connected to a first limiting block (33).

4. A packaging structure for fabrics according to claim 3, characterized in that, Each of the aforementioned electromagnetic blocks (13) has a heating strip (37) with a reset function rotatably connected to its outer wall. The outer wall of the heating strip (37) is fixedly connected to two second mating arms (36), and each of the second mating arms (36) abuts against the outer wall of a nearby second limiting block (35).

5. A packaging structure for fabrics according to claim 2, characterized in that, One of the pressure sensors (23) has its signal output terminal connected to the control terminals of two cooperating electromagnetic blocks (13), and the other pressure sensor (23) has its signal output terminal connected to the control terminals of the second electromagnetic block (52) and the first electromagnetic block (51).

6. A packaging structure for fabrics according to claim 1, characterized in that, The air extraction mechanism (301) includes a rotating ring (47), which is fixedly connected to the outer wall of a nearby rotating wheel (3). Four abutment pipes (46) are fixedly connected to the end of the rotating ring (47) away from the rotating wheel (3). Each abutment pipe (46) is connected to a nearby hollow pipe (10). An elastic one-way valve (45) is fixedly installed inside each abutment pipe (46). A connecting circular plate (41) is fixedly connected to the inner wall of the housing (1). A curved strip (43) is fixedly connected to the outer wall of the connecting circular plate (41).

7. A packaging structure for fabrics according to claim 6, characterized in that, The outer wall of the curved strip (43) is fixedly connected to a mating strip (44). The ends of the curved strip (43) and the mating strip (44) near the rotating ring (47) are both in contact with the outer walls of the adjacent abutting pipe (46) and the elastic one-way valve (45). The inner wall of the housing (1) is also fixedly installed with a vacuum pump (39). The outlet of the vacuum pump (39) is fixedly connected to a connecting pipe (40). The end of the connecting pipe (40) away from the vacuum pump (39) is fixedly connected to the outer wall of the curved strip (43), and the connecting pipe (40) is connected to an adjacent abutting pipe (46).

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