An adult pants folding device and implementation method

Abstract

The present invention discloses an adult pants folding device and an implementation method, which includes six negative pressure air funnels and four link mechanisms driven by cams. Two of the four link mechanisms are used to drive the air funnel synchronous wheels to rotate for the folding action of adult pants. One of them is used to drive the bevel gear to rotate to complete the folding action of the adult pants' ear edges. One of them is used to cooperate with the lead screw, nut, and guide rail slider mechanism to complete the axial indentation action of the adult pants' ear edges. The negative pressure air funnels are used to adsorb the adult pants and their ear edges; the negative pressure air funnels and the link mechanisms are all fixed on a driving disc, and the driving disc is driven by a motor to rotate; the present invention facilitates the fixing, ear edge folding, ear edge indentation, and overall folding of adult pants. The folded adult pants are neat, consistent, and of good quality. At the same time, the folding operation of adult pants can be completed continuously, realizing the automation of adult pants folding.

Description

Technical Field

[0001] The present invention relates to an adult pants folding device and an implementation method thereof. Background Art

[0002] With the improvement of people's living standards and the pursuit of higher quality of sanitary products, the convenient detachable function of pants has become an urgent need for users; this requires the adult pants ear to have the functions of adhesion - disassembly - re - adhesion, and the commonly used adhesion method is Velcro; after the adult pants are manufactured and formed, they need to be folded and packaged. During the folding process, it is necessary to ensure the alignment of both ends, and ensure that the letter Velcro at both ends is neatly and accurately adhered together, so as to facilitate packaging and subsequent use; however, in the actual production process, because the adult pants ear is flexible, it is difficult to accurately position in continuous workstations, resulting in problems such as low folding accuracy, unevenness at both ends after folding, incorrect fitting of the letter Velcro, and inability to adapt to high speed, thus affecting the subsequent use of the product; in order to improve the folding accuracy, some existing manufacturers adopt the method of manual folding. Although this method solves the problem of folding accuracy, the production efficiency is low and cannot meet the needs of mass production of products; therefore, it is necessary to develop a new type of folding device to solve the problems encountered currently. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an adult pants folding device and an implementation method thereof, which have good stability, are convenient for fixing adult pants, folding the ears, retracting the ears axially, and overall folding. The folded adult pants are neat, consistent, and of good quality. At the same time, it can continuously complete the folding operation of adult pants, realizing the automation of adult pants folding, greatly improving the production efficiency, and having practicality and wide application.

[0004] To solve the above problems, the present invention adopts the following technical solutions:

[0005] An adult pants folding device includes six negative pressure air funnels and four link mechanisms driven by cams. Two of the four link mechanisms are used to drive the air funnel synchronous wheel to rotate for the folding action of adult pants. One of them is used to drive the bevel gear to rotate to complete the ear folding action of adult pants. One of them is used to cooperate with the lead screw, nut, and guide rail slider mechanism to complete the axial retraction action of the adult pants ear. The negative pressure air funnel is used to adsorb the adult pants and its ears; the negative pressure air funnels and the link mechanisms are all fixed on a driving disc, and the driving disc is driven by a motor to rotate. The links of the four link mechanisms are fitted in the cam groove of the same cam through cam rollers, and the links of the four four - link mechanisms are all driven by the same cam.

[0006] Preferably, the six negative pressure air scoops are respectively the negative pressure air scoop one, the negative pressure air scoop two, the negative pressure air scoop three, the negative pressure air scoop four, the negative pressure air scoop five and the negative pressure air scoop six. The negative pressure air scoop one and the negative pressure air scoop two are used for the adsorption of the adult pants main body, and the negative pressure air scoop three, the negative pressure air scoop four, the negative pressure air scoop five and the negative pressure air scoop six are respectively used for the adsorption of the four ear edges of the adult pants. There is a fixed connection between the negative pressure air scoop three, the negative pressure air scoop five and the negative pressure air scoop one, and there is a movable connection between the negative pressure air scoop four, the negative pressure air scoop six and the negative pressure air scoop two.

[0007] This setting facilitates the adsorption operation of the adult pants product through the action of multiple negative pressure air scoops. At the same time, the product will not be pulled or deformed during adsorption, making the product more natural, thus facilitating subsequent folding.

[0008] Preferably, on one side of the negative pressure air scoop three and the negative pressure air scoop five, there is an ear edge folding mechanism. The ear edge folding mechanism includes a gear five, a bevel gear one and a bevel gear two. The bevel gear one is meshed with the bevel gear two. The bevel gear one and the gear five are installed on the same fixed shaft. The gear five drives the bevel gear one and the bevel gear two to rotate synchronously. There is an axis on the bevel gear two, and folding wheels are installed at both ends of the axis. The bevel gear two drives the folding wheels to rotate.

[0009] This setting completes the folding operation of the ear edge through the action of the bevel gear and the folding wheel, and at the same time, the mechanical operation is stable and reliable.

[0010] Preferably, the four link mechanisms are respectively the link mechanism one, the link mechanism two, the link mechanism three and the link mechanism four. The link mechanism one includes a cam roller four, a link three and a gear nine. The cam roller four is installed on the link three. One end of the link three is connected to the gear nine. The link three drives the gear nine to rotate. The gear nine is meshed with the gear five.

[0011] The link mechanism two includes a cam roller three, a link four, a gear seven and a gear eight. The cam roller three is installed on the link four. One end of the link four is connected to the gear seven. The gear seven is meshed with the gear eight. The link four drives the gear eight to rotate through the gear seven.

[0012] The link mechanism three includes a gear four, a gear six, a link two and a cam roller two. The cam roller two is installed on the link two. One end of the link two is connected to the gear six. The gear six is meshed with the gear four. The link two drives the gear four to rotate through the gear six.

[0013] The link mechanism four includes a cam roller one, a gear one, a link one and a gear two. The cam roller one is installed on the link one. One end of the link one is connected to the gear two. The gear two is meshed with the gear one. The link one drives the gear one to rotate through the gear two.

[0014] This setting realizes the ear folding, indentation, and overall folding and forming operations of the product through the action of multiple link mechanisms, achieving the automation of folding.

[0015] Preferably, the lower ends of the first negative pressure air hopper, the second negative pressure air hopper, the third negative pressure air hopper, the fourth negative pressure air hopper, the fifth negative pressure air hopper, and the sixth negative pressure air hopper are provided with air hopper supports. The lower ends of the air hopper supports are provided with platform brackets. Between the air hopper supports of the first negative pressure air hopper, the third negative pressure air hopper, and the fifth negative pressure air hopper and the platform brackets, there are air hopper fixing plates. Between the fourth negative pressure air hopper, the sixth negative pressure air hopper and the platform brackets, there is a guide rail slider mechanism. On one side of the air hopper supports of the second negative pressure air hopper, the fourth negative pressure air hopper, and the sixth negative pressure air hopper, nuts are installed. On the nuts, lead screws are installed. The lead screws are threadedly connected to the fourth negative pressure air hopper and the sixth negative pressure air hopper. The thread directions of the lead screws at the fourth negative pressure air hopper and the sixth negative pressure air hopper are opposite. One end of the lead screw is connected to a first gear; the first gear drives the lead screw to drive the fourth negative pressure air hopper and the sixth negative pressure air hopper to move.

[0016] This setting realizes the movement of the fourth negative pressure air hopper and the sixth negative pressure air hopper through the action of the lead screw and the guide rail slider structure, thereby completing the indentation operation of the ear.

[0017] Preferably, the second synchronous pulleys and multiple auxiliary synchronous pulleys are provided on the first negative pressure air hopper, the third negative pressure air hopper, and the fifth negative pressure air hopper. A second transmission shaft is provided on the second synchronous pulley. The second transmission shaft is connected to an eighth gear; the eighth gear drives the second synchronous pulley to rotate; the first synchronous pulleys and multiple auxiliary synchronous pulleys are provided on the second negative pressure air hopper, the fourth negative pressure air hopper, and the sixth negative pressure air hopper. A first transmission shaft is provided on the first synchronous pulley. The first transmission shaft is connected to a fourth gear; the fourth gear drives the first synchronous pulley to rotate. Multiple auxiliary synchronous belts are connected between the first synchronous pulley and the auxiliary synchronous pulleys, and between the second synchronous pulley and the auxiliary synchronous pulleys.

[0018] This setting realizes the final folding operation of the adult pants through the action of the synchronous pulleys, the auxiliary synchronous pulleys, and the auxiliary synchronous belts.

[0019] Preferably, limit rods are provided on the first link, the second link, the third link, and the fourth link. A support plate is installed on the platform bracket. The limit rods are movably connected to the support plate through shafts.

[0020] This setting assists the link to swing through the action of the limit rod and simultaneously limits the swing amplitude.

[0021] An implementation method of an adult pants folding device includes the following steps:

[0022] 1) Conduct a degree-of-freedom analysis to determine the number of drives of the folding device;

[0023] 2) According to the actual product situation, judge how much the ear at one end of the adult pants needs to be folded, determine how much distance the ear at the other end needs to be indented, and at the same time determine the folding length according to the product length;

[0024] 3) Determine the rotation angles of Gear Five and Gear Eight according to the required folding length of the product and the pitch circle diameters of Gear Five and Gear Eight of the negative pressure air scoop. Set Gear Six and Gear Seven to decelerate Gear Five and Gear Eight, and then determine the required rotation angles of the end Link Two and Link Four through the rotation of Gear Six and Gear Seven, that is, the swing angles of Cam Roller Two and Cam Roller Three;

[0025] 4) Determine the transmission ratio of the bevel gears according to the required folding angle of the product by the ear, and then inversely deduce the required rotation angles of Gear Five, Gear Nine, and Link Three, that is, the swing angle of Cam Roller Four;

[0026] 5) According to the indentation distance of the product by the ear, deduce the required rotation angle of the lead screw through the lead screw and nut mechanism, and deduce the rotation angles of Gear One, Gear Two, and Link One, that is, the swing angle of Cam Roller One;

[0027] 6) After the required rotation angles of Link One, Link Two, Link Three, and Link Four are determined, start the cam design; during the design, ensure that the pressure angle at the connection between the four cam grooves and each connecting rod is less than 50°;

[0028] 7) The four cam grooves in the cam shall not interfere with each other, and the minimum wall thickness shall not be less than 20 mm. At the same time, starting from the local area, consider that the transmission angle of each double-rocker mechanism needs to be greater than 50°, and there shall be no dead point situation during operation;

[0029] 8) After the overall transmission dimension layout is completed, design auxiliary mechanisms such as the synchronous pulley mechanism and the support structure;

[0030] 9) Design the ventilation structure to ensure that there is sufficient negative pressure during the ear folding - ear indentation - product folding process of the product, and the air cut-off is reasonable at the product feeding and discharging positions, and the product shall not be unqualified due to insufficient negative pressure or untimely air cut-off during the product transportation and transfer process.

[0031] The beneficial effects of the present invention are as follows: It is convenient to use, simple to operate, has good stability, is convenient for fixing adult pants, ear folding, ear indentation, and overall folding. The folded adult pants are neat, consistent, and of good quality. At the same time, it can continuously complete the folding operation of adult pants, realizing the automation of adult pants folding, greatly improving production efficiency, and having practicality and wide application; at the same time, through the method of the present invention, the folding equipment can be designed, and the designed folding equipment can meet the needs of folding adult pants of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art, but it is not a limitation on the protection scope of the present invention.

[0033] Figure 1 is a structural schematic diagram of the present invention;

[0034] Figure 2 is a schematic diagram of the installation position of the second synchronous pulley of the present invention;

[0035] Figure 3 is a schematic diagram of the installation position of the first synchronous pulley of the present invention;

[0036] Figure 4 is a schematic diagram of the installation state of the present invention;

[0037] Figure 5 is a schematic diagram of the adult pants of the present invention;

[0038] Figure 6 is a schematic cross-sectional view during the installation of the present invention;

[0039] Wherein, 1. the first negative pressure air scoop, 2. the second negative pressure air scoop, 3. the third negative pressure air scoop, 4. the fourth negative pressure air scoop, 5. the fifth negative pressure air scoop, 6. the sixth negative pressure air scoop, 7. the first link mechanism, 8. the second link mechanism, 9. the third link mechanism, 10. the fourth link mechanism, 11. the support plate, 12. the driving disc, 13. the cam, 14. the limiting rod, 15. the folding wheel, 21. the first cam roller, 22. the first gear, 23. the nut, 24. the air scoop support, 25. the lead screw, 26. the guide rail slider mechanism, 27. the air scoop fixing plate, 28. the fifth gear, 29. the first bevel gear, 30. the second bevel gear, 36. the fourth gear, 37. the first synchronous pulley, 38. the first transmission shaft, 39. the platform support, 40. the sixth gear, 41. the second link, 42. the second cam roller, 43. the first link, 44. the second gear, 45. the third cam roller, 46. the fourth link, 47. the seventh gear, 48. the eighth gear, 49. the second transmission shaft, 50. the second synchronous pulley, 51. the fourth cam roller, 52. the third link, 53. the ninth gear, 54. the auxiliary synchronous pulley. Specific Embodiment

[0040] Refer to Figures 1 to 6 an adult pants folding device shown, which includes six negative pressure air scoops and four link mechanisms driven by cams. Two of the four link mechanisms are used to drive the rotation of the air scoop synchronous pulley to perform the adult pants folding action. One of them is used to drive the bevel gear to complete the adult pants ear turning-over action. One of them is used to cooperate with the lead screw, nut, and guide rail slider mechanism to complete the axial indentation action of the adult pants ear. The negative pressure air scoop is used to adsorb the adult pants and its ears; the negative pressure air scoop and the link mechanism are all fixed on a driving disc, and the driving disc is driven by a motor to rotate. The links of the four link mechanisms are cooperated through cam rollers in the cam groove of the same cam, and the links of the four four-bar link mechanisms are all driven by the same cam.

[0041] Further, the six negative pressure air funnels are respectively the negative pressure air funnel one 1, the negative pressure air funnel two 2, the negative pressure air funnel three 3, the negative pressure air funnel four 4, the negative pressure air funnel five 5 and the negative pressure air funnel six 6. The negative pressure air funnel one 1 and the negative pressure air funnel two 2 are used for the adsorption of the adult pants main body. The negative pressure air funnel three 3, the negative pressure air funnel four 4, the negative pressure air funnel five 5 and the negative pressure air funnel six 6 are respectively used for the adsorption of the four ear sides of the adult pants. The negative pressure air funnel three 3 and the negative pressure air funnel five 5 are fixedly connected to the negative pressure air funnel one 1, and the negative pressure air funnel four 4 and the negative pressure air funnel six 6 are movably connected to the negative pressure air funnel two 2.

[0042] Further, on one side of each of the negative pressure air funnel three 3 and the negative pressure air funnel five 5, there is an ear side folding mechanism. The ear side folding mechanism includes a gear five 28, a bevel gear one 29 and a bevel gear two 30. The bevel gear one 29 is meshed and connected to the bevel gear two 30. The bevel gear one 29 and the gear five 28 are installed on the same fixed shaft. The gear five 28 drives the bevel gear one 29 and the bevel gear two 30 to rotate synchronously. An axis is provided on the bevel gear two 30, and folding wheels 15 are installed at both ends of the axis. The bevel gear two drives the folding wheels 15 to rotate.

[0043] Further, the four link mechanisms are respectively a link mechanism one 7, a link mechanism two 8, a link mechanism three 9 and a link mechanism four 10. The link mechanism one 7 includes a cam roller four 51, a link three 52 and a gear nine 53. The cam roller four 51 is installed on the link three 52. One end of the link three 52 is connected to the gear nine 53. The link three 52 drives the gear nine 53 to rotate. The gear nine 53 is meshed and connected to the gear five 28.

[0044] Further, the link mechanism two 8 includes a cam roller three 45, a link four 46, a gear seven 47 and a gear eight 48. The cam roller three 45 is installed on the link four 46. One end of the link four 46 is connected to the gear seven 47. The gear seven 47 is meshed and connected to the gear eight 48. The link four 46 drives the gear eight 48 to rotate through the gear seven 47.

[0045] Further, the link mechanism three 9 includes a gear four 36, a gear six 40, a link two 41 and a cam roller two 42. The cam roller two 42 is installed on the link two 41. One end of the link two 41 is connected to the gear six 40. The gear six 40 is meshed and connected to the gear four 36. The link two 41 drives the gear four 36 to rotate through the gear six 40.

[0046] Further, the link mechanism four 10 includes a cam roller one 21, a gear one 22, a link one 43 and a gear two 44. The cam roller one 21 is installed on the link one 43. One end of the link one 43 is connected to the gear two 44. The gear two 44 is meshed and connected to the gear one 22. The link one 43 drives the gear one 22 to rotate through the gear two 44.

[0047] Further, a wind funnel support 24 is provided at the lower ends of the first negative pressure wind funnel 1, the second negative pressure wind funnel 2, the third negative pressure wind funnel 3, the fourth negative pressure wind funnel 4, the fifth negative pressure wind funnel 5, and the sixth negative pressure wind funnel 6. A platform support 39 is provided at the lower end of the wind funnel support 24. A wind funnel fixing plate 27 is provided between the wind funnel supports of the first negative pressure wind funnel 1, the third negative pressure wind funnel 3, and the fifth negative pressure wind funnel 5 and the platform support. A guide rail slider mechanism 26 is provided between the fourth negative pressure wind funnel 4, the sixth negative pressure wind funnel 6 and the platform support 39. Nuts 23 are installed on one side of the wind funnel supports of the second negative pressure wind funnel 2, the fourth negative pressure wind funnel 4, and the sixth negative pressure wind funnel 6. Screws 25 are installed on the nuts 23. The screws 25 are threadedly connected to the fourth negative pressure wind funnel 4 and the sixth negative pressure wind funnel 6. The thread directions of the screws 25 at the positions of the fourth negative pressure wind funnel and the sixth negative pressure wind funnel are opposite. One end of the screw 25 is connected to a first gear 22; the first gear 22 drives the screw 25 to drive the fourth negative pressure wind funnel 4 and the sixth negative pressure wind funnel 6 to move.

[0048] Further, a second synchronous pulley 50 and a plurality of auxiliary synchronous pulleys 54 are provided on the first negative pressure wind funnel 1, the third negative pressure wind funnel 3, and the fifth negative pressure wind funnel 5. A second transmission shaft 49 is provided on the second synchronous pulley 50. The second transmission shaft 49 is connected to an eighth gear 48. The eighth gear 48 drives the second synchronous pulley 50 to rotate; a first synchronous pulley 37 and a plurality of auxiliary synchronous pulleys 54 are provided on the second negative pressure wind funnel 2, the fourth negative pressure wind funnel 4, and the sixth negative pressure wind funnel 6. A first transmission shaft 38 is provided on the first synchronous pulley 37. The first transmission shaft 38 is connected to a fourth gear 36. The fourth gear 36 drives the first synchronous pulley 37 to rotate. A plurality of auxiliary synchronous belts 54 are connected between the first synchronous pulley 37 and the auxiliary synchronous pulleys, and between the second synchronous pulley 50 and the auxiliary synchronous pulleys.

[0049] Further, limiting rods 14 are provided on the first connecting rod 43, the second connecting rod 41, the third connecting rod 52, and the fourth connecting rod 46. A support plate 11 is installed on the platform support 39. The limiting rods 14 are movably connected to the support plate 11 through shafts.

[0050] An implementation method of an adult pants folding device includes the following steps:

[0051] 1) Conduct a degree-of-freedom analysis to determine the number of driving elements of the folding device;

[0052] 2) According to the actual product situation, determine how much the ear of one end of the adult pants needs to be folded, determine how much distance the ear of the other end needs to be retracted, and at the same time determine the folding length according to the product length;

[0053] 3) According to the required folding length of the product and the pitch circle diameters of the fifth gear and the eighth gear of the negative pressure wind funnel, determine the rotation angles of the fifth gear and the eighth gear. Set the sixth gear and the seventh gear to decelerate the fifth gear and the eighth gear, and then determine the required rotation angles of the end second connecting rod and the fourth connecting rod through the rotation of the sixth gear and the seventh gear, that is, the swing angles of the second cam roller and the third cam roller;

[0054] 4) Determine the transmission ratio of the bevel gears according to the required folding angle of the earpiece of the product, and then inversely deduce the rotation angles required for Gear Five, Gear Nine, and Link Three, that is, the swing angle of Cam Roller Four;

[0055] 5) According to the indentation distance of the earpiece of the product, deduce the required rotation angle of the lead screw through the lead screw and nut mechanism, and deduce the rotation angles of Gear One, Gear Two, and Link One, that is, the swing angle of Cam Roller One;

[0056] 6) After determining the required rotation angles of Link One, Link Two, Link Three, and Link Four, start the cam design; during the design, ensure that the pressure angle at the connection between the four cam grooves and each connecting rod is less than 50°;

[0057] 7) The four cam grooves in the cam shall not interfere with each other, and the minimum wall thickness shall not be less than 20 mm. At the same time, starting from the local area, consider that the transmission angle of each double-rocker mechanism shall be greater than 50°, and there shall be no dead point situation during operation;

[0058] 8) After completing the layout of the overall transmission dimensions, design auxiliary mechanisms such as the synchronous pulley mechanism and the support structure;

[0059] 9) Design the ventilation structure to ensure that there is sufficient negative pressure during the earpiece folding - earpiece indentation - product folding process of the product, and the air interruption is reasonable at the product feeding and discharging positions, and the product shall not be unqualified due to insufficient negative pressure or untimely air interruption during the product transportation and transfer process.

[0060] Two Gear Nines of the present invention are arranged on the same shaft, and two Bevel Gear Ones and two Bevel Gear Twos are symmetrically arranged as a whole, ensuring that the folding directions are opposite and the earpieces of the product are folded simultaneously.

[0061] During implementation, on the premise of knowing the length of the product (adult pants), it is necessary to control the position and size of the folding wheel 15 so that the folding is as close as possible to the junction of the free position and the position sucked by negative pressure of the product during the folding process, that is, the root folding, which can ensure the folding accuracy and stability to the greatest extent;

[0062] Considering that the rotation directions of the earpiece folding mechanism and the driving disc are perpendicular, a bevel gear (Bevel Gear One, Bevel Gear Two) structure is adopted. However, it will be subject to alternating stress during the rotation process. Therefore, this structure needs to ensure the machining accuracy, strength, and stiffness, and the bevel tooth profile is selected as the spiral bevel gear.

[0063] When the present invention is in use:

[0064] The folding device picks up the product on the conveying device (the conveying device is the previous process) through adsorption force; at this time, most or the whole of the ear to be folded of the product (adult pants) is placed on the negative pressure air hopper three, the negative pressure air hopper five and the ear folding mechanism, and at the same time, most or the whole of the ear to be indented is placed on the negative pressure air hopper four, the negative pressure air hopper six and the vacant area between the negative pressure air hopper four, the negative pressure air hopper six and the negative pressure air hopper two; the main body of the product (main core body) is placed on the negative pressure air hopper one and the negative pressure air hopper two.

[0065] When the ear is folded, through the rotation of the driving disc, the whole folding device rotates, so that the cam rollers one, two, three, and four move along the cam groove of the cam and are affected by the cam groove structure or path; the position states of the connecting rods one, two, three, and four change;

[0066] First, the connecting rod three pushes the gear nine to rotate, the gear nine drives the gear five to rotate, the gear five drives the bevel gear one to rotate, the bevel gear one drives the bevel gear two to rotate, and the bevel gear two drives the folding wheel to complete the folding operation of the ear;

[0067] At the same time, the connecting rod one pushes the gear two to rotate, the gear two drives the gear one to rotate, the gear one drives the lead screw to rotate, and the lead screw drives the negative pressure air hopper four and the negative pressure air hopper six to move towards the negative pressure air hopper two through the action of the left - hand and right - hand threads, realizing the indenting operation of the ear.

[0068] Subsequently, the connecting rod four pushes the gear seven to rotate, the gear seven drives the gear eight to rotate, the gear eight drives the synchronous wheel two to rotate through the transmission shaft two, the synchronous wheel two drives the auxiliary synchronous belt to rotate through the action of the auxiliary synchronous wheel, and at the same time, the connecting rod two pushes the gear six to rotate, the gear six drives the gear four to rotate, the gear four drives the synchronous wheel one to rotate through the transmission shaft one, and the synchronous wheel one drives the auxiliary synchronous belt to rotate through the auxiliary synchronous wheel, and the product is moved towards the middle and gradually downwards by the auxiliary synchronous belt until the product is folded; subsequently, the auxiliary synchronous belt reverses and takes the product out.

[0069] When the product is being joined, since the middle main core body part of the product is thicker and the two ears are thinner, the ears may not be able to be joined. Therefore, the distance l between the negative pressure air hopper one and the negative pressure air hopper two 1 and the distances l between the negative pressure air hopper three and the negative pressure air hopper four, and the negative pressure air hopper five and the negative pressure air hopper six 2 are controlled, and l 1 、l 2Inconsistency will inevitably result in tangential and radial displacements of the earpiece relative to the core body during the folding process. By adjusting the sizes of the auxiliary synchronous wheels on the opposite sides of the negative pressure air hoppers 1, 3, and 5 and the sizes of the folding gaps relative to the negative pressure air hoppers 2, 4, and 6, this relative displacement can be controlled within 5 mm. The simultaneous folding of the air hoppers on both sides also ensures the folding accuracy, that is, there are simultaneous relative displacements on both sides. After the product is folded, the negative pressure of the negative pressure air hoppers 2, 4, and 6 is turned off, and the negative pressure of the negative pressure air hoppers 1, 3, and 5 on one side of the product is retained. At the same time, the four link mechanisms are reversed to convey the folded product out along one side and then transfer it to other workstations.

[0070] In this case, one folding device is adopted, and n folding devices can be reasonably selected to be installed on the driving disc according to the space requirements. Each device corresponds to a range of 360° / n on the disc, ensuring that there is no interference in the installation of adjacent folding devices. At the same time, the four double-rocker devices are reasonably arranged to avoid interference in their mutual movements.

[0071] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be thought of without creative labor should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. An adult pants folding device, characterized in that: it includes six negative pressure air funnels and four link mechanisms driven by cams. Two of the four link mechanisms are used to drive the air funnel synchronizing wheels to rotate for the adult pants folding action, one is used to drive the bevel gear to rotate to complete the ear edge folding action of the adult pants, and the other is used to cooperate with the lead screw, nut, and guide rail slider mechanism to complete the axial indentation action of the ear edge of the adult pants. The negative pressure air funnels are used to adsorb the adult pants and their ear edges; the negative pressure air funnels and the link mechanisms are all fixed on a driving disc, and the driving disc is driven by a motor to rotate. The links of the four link mechanisms are fitted in the cam grooves of the same cam through cam rollers, and the links of the four four-link mechanisms are all driven by the same cam; the six negative pressure air funnels are respectively the negative pressure air funnel one, the negative pressure air funnel two, the negative pressure air funnel three, the negative pressure air funnel four, the negative pressure air funnel five, and the negative pressure air funnel six. The negative pressure air funnel one and the negative pressure air funnel two are used for adsorbing the main body of the adult pants, and the negative pressure air funnel three, the negative pressure air funnel four, the negative pressure air funnel five, and the negative pressure air funnel six are respectively used for adsorbing the four ear edges of the adult pants. The negative pressure air funnel three and the negative pressure air funnel five are fixedly connected to the negative pressure air funnel one, and the negative pressure air funnel four and the negative pressure air funnel six are movably connected to the negative pressure air funnel two; on one side of the negative pressure air funnel three and the negative pressure air funnel five, there are both ear edge folding mechanisms. The ear edge folding mechanism includes a gear five, a bevel gear one, and a bevel gear two. The bevel gear one is meshed and connected with the bevel gear two. The bevel gear one and the gear five are installed on the same fixed shaft, and the gear five drives the bevel gear one and the bevel gear two to rotate synchronously. On the bevel gear two, there is an axis, and folding wheels are installed at both ends of the axis. The bevel gear two drives the folding wheels to rotate; the four link mechanisms are respectively the link mechanism one, the link mechanism two, the link mechanism three, and the link mechanism four. The link mechanism one includes a cam roller four, a link three, and a gear nine. The cam roller four is installed on the link three. One end of the link three is connected to the gear nine, and the link three drives the gear nine to rotate. The gear nine is meshed and connected with the gear five; the link mechanism two includes a cam roller three, a link four, a gear seven, and a gear eight. The cam roller three is installed on the link four. One end of the link four is connected to the gear seven. The gear seven is meshed and connected with the gear eight, and the link four drives the gear eight to rotate through the gear seven; the link mechanism three includes a gear four, a gear six, a link two, and a cam roller two. The cam roller two is installed on the link two. One end of the link two is connected to the gear six. The gear six is meshed and connected with the gear four, and the link two drives the gear four to rotate through the gear six; the link mechanism four includes a cam roller one, a gear one, a link one, and a gear two. The cam roller one is installed on the link one. One end of the link one is connected to the gear two. The gear two is meshed and connected with the gear one, and the link one drives the gear one to rotate through the gear two; The first negative pressure air scoop, the third negative pressure air scoop and the fifth negative pressure air scoop are provided with a second synchronous pulley and a plurality of auxiliary synchronous pulleys. A second transmission shaft is provided on the second synchronous pulley. The second transmission shaft is connected to an eighth gear, and the eighth gear drives the second synchronous pulley to rotate. The second negative pressure air scoop, the fourth negative pressure air scoop and the sixth negative pressure air scoop are provided with a first synchronous pulley and a plurality of auxiliary synchronous pulleys. A first transmission shaft is provided on the first synchronous pulley. The first transmission shaft is connected to a fourth gear, and the fourth gear drives the first synchronous pulley to rotate. A plurality of auxiliary synchronous belts are connected between the first synchronous pulley and the auxiliary synchronous pulleys, and between the second synchronous pulley and the auxiliary synchronous pulleys.

2. The adult pants folding device according to claim 1, characterized in that: The lower ends of the first negative pressure air scoop, the second negative pressure air scoop, the third negative pressure air scoop, the fourth negative pressure air scoop, the fifth negative pressure air scoop and the sixth negative pressure air scoop are provided with air scoop supports. The lower ends of the air scoop supports are provided with platform brackets. Air scoop fixing plates are provided between the air scoop supports of the first negative pressure air scoop, the third negative pressure air scoop and the fifth negative pressure air scoop and the platform brackets. A guide rail slider mechanism is provided between the fourth negative pressure air scoop, the sixth negative pressure air scoop and the platform brackets. Nuts are installed on one side of the air scoop supports of the second negative pressure air scoop, the fourth negative pressure air scoop and the sixth negative pressure air scoop. Screws are installed on the nuts. The screws are threadedly connected to the fourth negative pressure air scoop and the sixth negative pressure air scoop. The thread directions of the screws at the positions of the fourth negative pressure air scoop and the sixth negative pressure air scoop are opposite. One end of the screw is connected to a first gear; the first gear drives the screw to drive the fourth negative pressure air scoop and the sixth negative pressure air scoop to move.

3. The adult pants folding device according to claim 2, characterized in that: Limit rods are provided on the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod. A support plate is installed on the platform bracket. The limit rods are movably connected to the support plate through shafts.

4. The implementation method of the adult pants folding device according to any one of claims 1-3, characterized in that: comprises the following steps: 1) Conduct a degree-of-freedom analysis to determine the number of drives of the folding device; 2) According to the actual product situation, judge how much the ear of one end of the adult pants needs to be folded, determine how much distance the ear of the other end needs to be retracted, and at the same time determine the folding length according to the product length; 3) According to the required folding length of the product and the pitch circle diameters of the fifth gear and the eighth gear of the negative pressure air scoop, determine the rotation angles of the fifth gear and the eighth gear. Set the sixth gear and the seventh gear to decelerate the fifth gear and the eighth gear, and then determine the required rotation angles of the end second connecting rod and the fourth connecting rod through the rotation of the sixth gear and the seventh gear, that is, the swing angles of the second cam roller and the third cam roller; 4) According to the required folding angle of the product ear, determine the bevel gear transmission ratio, and then inversely deduce the required rotation angles of the fifth gear, the ninth gear and the third connecting rod, that is, the swing angle of the fourth cam roller; 5) According to the retraction distance of the product ear, push out the required rotation angle of the screw through the screw and nut mechanism, and push out the rotation angles of the first gear, the second gear and the first connecting rod, that is, the swing angle of the first cam roller; 6) When the required rotation angles of the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are determined, start the cam design; during the design, ensure that the pressure angle at the connection between the four cam grooves and each connecting rod is less than 50°; 7) There shall be no interference among the four cam grooves in the cam, and the minimum wall thickness shall not be less than 20 mm. At the same time, starting from the local part, the transmission angle of each double-rocker mechanism shall be greater than 50°, and there shall be no dead point situation during operation; 8) After the overall transmission dimension layout is completed, design the synchronous pulley mechanism and the support structure; 9) Design the ventilation structure to ensure that there is sufficient negative pressure during the process of the product folding to the ear - retracting to the ear - folding the product, and the air cut-off is reasonable at the material receiving and discharging positions of the product. There shall be no unqualified products caused by insufficient negative pressure or untimely air cut-off during the transportation and transfer of the product.

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