Center sealing device for smart trash can

Abstract

The present invention discloses a central sealing device for a smart trash can, which relates to a smart trash can and aims to solve the problem that the structure and bag sealing process are too complicated. The key points of the technical solution are: a central sealing device for a smart trash can, comprising an assembly frame installed at the open end of the trash can, the center of the assembly frame having a central groove for the trash bag to pass through, the assembly frame relatively slidingly connected with a left translation arm and a right translation arm, the assembly frame is provided with a driving assembly, the driving assembly pushes the left translation arm and the right translation arm to close at the midline of the central groove, and the opposite surfaces of the left translation arm and the right translation arm are provided with a heat sealing assembly. The central sealing device for a smart trash can of the present invention adopts a heat sealing method to achieve the sealing of the trash bag, which not only does not require the use of tape, has a simple structure and reduces the complexity of bag sealing, but can also synchronously complete the bottom sealing of the next trash bag, thereby providing technical support for automatic installation of the trash bag.

Description

Technical Field

[0001] The present invention relates to an intelligent trash can, and more particularly to a central sealing device for the intelligent trash can. Background Art

[0002] Trash cans have always been necessities in people's lives with high frequency of contact and large number of users. Dirty trash cans have always been avoided by people. Most traditional trash cans require manual opening of new trash bags and sealing of trash bags full of trash. The process is entirely manual and extremely cumbersome. It is extremely unhygienic to have almost zero-distance contact with the trash.

[0003] The Chinese patent announcement with announcement number CN104692006B discloses a method and device for automatically opening and sealing bags for a smart trash can. The technical key points are: comprising a bag opening device and a bag sealing device, the bag opening device comprises a first stepper motor, the output end of the first stepper motor is fixedly connected to a first synchronous pulley, the first synchronous pulley is meshed with a first synchronous belt, the first synchronous belt is horizontally arranged and connected to a blower box at the upper and lower half circles of the first synchronous belt, respectively, and the two blower boxes are respectively provided with blowers with opposite air suction ports; the bag sealing device comprises a second stepper motor, the output end of the first stepper motor is fixedly connected to a first synchronous pulley, the first synchronous pulley is meshed with a first synchronous belt, the first synchronous belt is horizontally arranged and connected to a blower box at the upper and lower half circles of the first synchronous belt, respectively, and the two blower boxes are respectively provided with blowers with opposite air suction ports; The second stepper motor and the output end of the second stepper motor are fixedly connected to the second synchronous belt pulley, the second synchronous belt pulley is meshed with the second synchronous belt, the second synchronous belt is horizontally arranged and relatively perpendicular to the first synchronous belt, and the upper and lower half circles of the second synchronous belt are respectively connected with a bag pushing machine and a bag sealing machine; the bag sealing machine includes a mounting plate and a bag sealing pawl, a bag sealing ratchet and an adhesive tape arranged on the mounting plate; an opening facing the bag pushing machine is provided on the side of the mounting plate, the bag sealing pawl and the bag sealing ratchet are respectively arranged on both sides of the opening of the mounting plate, and the tap of the adhesive tape is sealed at the opening of the mounting plate.

[0004] The bag sealing device of the above technical solution needs to use tape, and multiple steps are required to be performed when sealing the bag, including sticking the tape, cutting the tape, removing the tape film, and guiding the bag opening to close. There is a problem that the structure and bag sealing process are too complicated; therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a central sealing device for a smart trash can, which adopts heat sealing to seal the garbage bag. It not only does not require the use of tape, but also has a simple structure and reduces the complexity of bag sealing. At the same time, it can simultaneously complete the bottom sealing of the next garbage bag, thereby providing technical support for automatic installation of garbage bags.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions: a central sealing device for an intelligent trash can, comprising an assembly frame installed at the open end of the trash can, the center of the assembly frame having a central groove for the trash bag to pass through, the assembly frame being relatively slidably connected with a left translation arm and a right translation arm, the assembly frame being provided with a driving assembly, the driving assembly pushing the left translation arm and the right translation arm to close at the midline of the central groove, and the opposite surfaces of the left translation arm and the right translation arm being provided with a heat sealing assembly.

[0007] By adopting the above technical scheme, the present application is installed on the upper opening of the smart trash can during actual use, and a garbage bag feeding device and an induction self-opening trash can lid are also installed on the present application. When the present application is needed to seal the garbage bag, the driving component drives the left translation arm and the right translation arm to slide toward each other until they are closed at the midline position of the central groove. After the closing is completed, the driving component stops applying force to the left translation arm and the right translation arm, and the heat sealing component is subsequently started, thereby melting the garbage bag along the midline of the central groove, and the molten liquid is squeezed to the upper and lower sides of the melting line. The molten liquid squeezed downward forms a seal for the lower garbage bag after solidification, and the molten liquid squeezed upward forms a bottom seal for the upper garbage bag after solidification. In summary, the present application adopts heat sealing to achieve the sealing of the garbage bag, which not only does not require the use of tape, has a simple structure and reduces the complexity of bag sealing, but can also synchronously complete the bottom seal of the next garbage bag, thereby providing technical support for automatic installation of garbage bags.

[0008] The present invention is further configured as follows: the driving assembly includes a screw rod rotatably connected to an assembly frame, a servo motor fixedly mounted on the assembly frame and used to drive the screw rod, and a threaded sleeve arranged at one end of the left translation arm and the right translation arm, wherein the screw rod is divided into two sections with the midpoint of the length as the boundary, the thread directions of the two sections are opposite and respectively cooperate with the threads of the two threaded sleeves.

[0009] The present invention is further configured as follows: the assembly frame is provided with a first micro switch, and the left translation arm touches the first micro switch after being moved backward and reset.

[0010] The present invention is further configured as follows: the specific number of the screws is two, namely screw A and screw B, both of which include a threaded section and a smooth section; the threaded sleeve at one end of the left translation arm is threadedly matched with the threaded section of screw A, and the other end thereof is slidingly matched with the smooth section of screw B; the threaded sleeve at one end of the right translation arm is threadedly matched with the threaded section of screw B, and the other end thereof is slidingly matched with the smooth section of screw A.

[0011] The present invention is further configured as follows: the output shaft of the servo motor is coaxially connected to one end of the screw rod B, and a synchronous belt assembly is provided to be transmission-connected to one end of the screw rod A.

[0012] The present invention is further configured as follows: the assembly frame is provided with a second micro switch and a third micro switch, and when the left translation arm and the right translation arm are in a closed state, the smooth sleeves of the two arms respectively touch the second micro switch and the third micro switch.

[0013] The present invention is further configured as follows: triangle plates are respectively provided at both ends of the opposite surfaces of the left translation arm and the right translation arm, the triangle plates are right triangles when viewed from above, and the hypotenuses of the four triangle plates face the center of the central groove.

[0014] The present invention is further configured as follows: the left translation arm and the right translation arm are provided with a travel groove corresponding to each triangular plate, the triangular plate is provided with a vertical back plate and at least two vertical sliding columns, the triangular plate is slidably engaged in the travel groove, and the vertical back plate and the vertical sliding column gap clamp the corresponding left translation arm or right translation arm; guide push walls are provided on both sides of the inner wall of the assembly frame, and the guide push walls protrude toward the center of the assembly frame, the triangular plate is provided with an extension arm, the end of the extension arm is rotatably connected to a roller, and the circumferential surface of the roller rolls and rubs against the guide push wall; a reset tension spring is provided between the vertical back plate and the corresponding left translation arm and right translation arm.

[0015] The present invention is further configured as follows: the heat sealing assembly includes a heat insulating strip clamped and fixed to the left translation arm, a heat sealing seat fixedly installed on the right translation arm, and a heating strip arranged on the heat sealing seat, and the heating strip and the heat insulating strip are gap-matched.

[0016] In summary, the present invention has the following beneficial effects: the present application adopts heat sealing to achieve the sealing of garbage bags, which not only does not require the use of tape, has a simple structure and reduces the complexity of bag sealing, but can also synchronously complete the bottom sealing of the next garbage bag, thereby providing technical support for automatic installation of garbage bags; only the torque output direction of the servo motor needs to be controlled to control the displacement of the left translation arm and the right translation arm toward or away from each other; a first micro switch is added to limit the limit reset displacement of the left translation arm and the right translation arm, thereby effectively preventing the problem of excessive displacement; the other ends of the left translation arm and the right translation arm are limited by the optical axis to ensure that the two remain parallel during the displacement process, thereby providing technical support for automatic installation of garbage bags; The clamping force balance at each position after the two are closed is improved; when the left translation arm touches the second micro switch, the servo motor stops the torque output, thereby ensuring the displacement accuracy of the two when they are closed; a third micro switch is added to improve the coordination of the drive component and the heat sealing component; four triangular plates generate a thrust toward the center of the garbage bag, thereby increasing the amount of molten liquid in a unit interval by reducing the length of the heat sealing line, thereby improving the sealing strength after heat sealing; the heat sealing component uses the heating strip of the right translation arm to melt the garbage bag, and uses the insulation strip to reduce the diffusion of heat, so that the molten liquid squeezed downward and upward solidifies faster, effectively improving the efficiency of sealing and bottom sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure after the hidden part of the application is assembled with the frame structure;

[0018] Figure 2 This is a schematic diagram of the structure of the heat sealing work of this application;

[0019] Figure 3 An exploded view of the drive assembly and heat sealing assembly for this application;

[0020] Figure 4 A schematic diagram of the overall structure after another part of the assembled frame structure is hidden for this application;

[0021] Figure 5 This is an enlarged cross-sectional view of the heat sealing component of this application.

[0022] Description of the drawings: 1. Assembly frame; 2. Center groove; 3. Left translation arm; 4. Right translation arm; 5. Screw; 51. Screw A; 52. Screw B; 6. Servo motor; 61. Synchronous belt assembly; 7. Threaded sleeve; 8. First micro switch; 10. Threaded section; 11. Smooth section; 12. Second micro switch; 13. Third micro switch; 14. Triangle plate; 15. Travel groove; 16. Vertical back plate; 17. Vertical slide column; 18. Guide push wall; 19. Extension arm; 20. Roller; 21. Reset spring; 22. Insulation strip; 23. Heat sealing seat; 24. Heating strip. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] Center sealing device for smart trash cans, such as Figure 1 , Figure 2 As shown, it includes an assembly frame 1 installed at the open end of the trash can, the center of the assembly frame 1 has a central groove 2 for the trash bag to pass through, the assembly frame 1 is relatively slidably connected with a left translation arm 3 and a right translation arm 4, the assembly frame 1 is provided with a driving component, the driving component pushes the left translation arm 3 and the right translation arm 4 to close at the center line of the central groove 2, and the opposite surfaces of the left translation arm 3 and the right translation arm 4 are provided with a heat sealing component.

[0025] When the present application is actually used, it is installed on the upper opening of the smart trash can. A garbage bag feeding device and an induction self-opening trash can lid are also installed on the present application. When the present application is needed to seal the garbage bag, the driving component drives the left translation arm 3 and the right translation arm 4 to slide toward each other until they are closed at the midline position of the central groove 2. After the closing is completed, the driving component stops applying force to the left translation arm 3 and the right translation arm 4, and the heat sealing component is subsequently started, thereby melting the garbage bag along the midline of the central groove 2, and the molten liquid is squeezed to the upper and lower sides of the melting line. The molten liquid squeezed downward forms a seal for the lower garbage bag after solidification, and the molten liquid squeezed upward forms a bottom seal for the upper garbage bag after solidification; in summary, the present application adopts heat sealing to achieve the sealing of the garbage bag, which not only does not require the use of tape, has a simple structure and reduces the complexity of bag sealing, but can also synchronously complete the bottom seal of the next garbage bag, thereby providing technical support for automatic installation of garbage bags.

[0026] The specific structure of the drive component is as follows: Figure 1 As shown, the driving assembly includes a screw rod 5 rotatably connected to the assembly frame 1, a servo motor 6 fixedly mounted on the assembly frame 1 and used to drive the screw rod 5, and a threaded sleeve 7 engaged and fixed to one end of the left translation arm 3 and the right translation arm 4. The screw rod 5 is divided into two sections with the midpoint of the length as the boundary. The thread directions of the two sections are opposite and they are respectively threadedly matched with the two threaded sleeves 7; when the servo motor 6 outputs torque to drive the screw rod 5 to rotate synchronously, the screw rod 5 cooperates with the two threaded sleeves 7 to generate threaded propulsion to synchronously drive the left translation arm 3 and the right translation arm 4 to move. Only by controlling the torque output direction of the servo motor 6, the left translation arm 3 and the right translation arm 4 can be controlled to move toward or away from each other.

[0027] To avoid the problem of excessive displacement of the left translation arm 3 and the right translation arm 4 during resetting, Figure 1 , Figure 3 As shown, the assembly frame 1 is installed with a first micro switch 8. The left translation arm 3 touches the first micro switch 8 after being moved back and reset. Therefore, when resetting, the left translation arm 3 touches the first micro switch 8. At this time, the servo motor 6 stops outputting torque, thereby realizing the limitation of the extreme reset displacement of the left translation arm 3 and the right translation arm 4, and effectively preventing the problem of excessive displacement.

[0028] In order to improve the balance of the clamping force of the left translation arm 3 and the right translation arm 4, as Figure 2As shown, there are two screws 5, namely screw A51 and screw B52, both of which include a threaded section 10 and a smooth section 11; the threaded sleeve 7 at one end of the left translation arm 3 is threadedly matched with the threaded section 10 of the screw A51, and the other end thereof is slidingly sleeved with the smooth section 11 of the screw B52; the threaded sleeve 7 at one end of the right translation arm 4 is threadedly matched with the threaded section 10 of the screw B52, and the other end thereof is slidingly sleeved with the smooth section 11 of the screw A51; with the above structure, one end of the left translation arm 3 is the active end, and the other end is the driven end, and correspondingly, one end of the right translation arm 4 is the driven end, and the other end is the active end, so that in terms of the overall clamping force, there is an active force at both ends, compared with the commonly used screw 5 in the prior art that drives the left translation arm 3 and the right translation arm 4 at the same time, effectively improving the balance of the clamping force at both ends.

[0029] The servo motor 6 drives the two screws 5 synchronously in the following manner: Figure 2 As shown, the output shaft of the servo motor 6 is coaxially connected to one end of the screw B52, and a synchronous belt assembly 61 is provided for transmission connection with one end of the screw A51, so that only one power source is required to synchronously drive the two screws 5, effectively improving the rotational synchronization of the screws A51 and the screw B52.

[0030] To ensure the displacement accuracy when the left translation arm 3 and the right translation arm 4 are closed, Figure 2 , Figure 3 As shown, the assembly frame 1 is provided with a second micro switch 12 and a third micro switch 13. When the left translation arm 3 and the right translation arm 4 are in a closed state, the smooth sleeves of the two respectively touch the second micro switch 12 and the third micro switch 13; thus, when the left translation arm 3 touches the second micro switch 12, the servo motor 6 stops the torque output, thereby ensuring the displacement accuracy of the two when closing; at the same time, the right translation arm 4 touches the third micro switch 13, and the heat sealing assembly is started at this time, thereby improving the coordination of the driving assembly and the heat sealing assembly.

[0031] In actual application, the present application found that when the garbage bag is straightened into a straight line for heat sealing, there is less molten liquid, and the heat seal edge produced after solidification is too weak, resulting in poor heat seal strength. Figure 1 , Figure 2 As shown, triangular plates 14 are integrally formed at both ends of the opposite surfaces of the left translation arm 3 and the right translation arm 4. The triangular plates 14 are right-angled triangles when viewed from above, and the hypotenuses of the four triangular plates 14 face the center of the center groove 2. Therefore, when the left translation arm 3 and the right translation arm 4 are closed, the four triangular plates 14 generate a thrust toward the center of the garbage bag, thereby increasing the amount of molten liquid in a unit interval by reducing the length of the heat sealing line, thereby improving the sealing strength after heat sealing.

[0032] To further shorten the length of the heat sealing line, such as Figure 1 , Figure 3 , Figure 4 As shown, the left translation arm 3 and the right translation arm 4 are integrally formed with a travel groove 15 corresponding to each triangular plate 14, and the triangular plate 14 is integrally formed with a vertical back plate 16. Three vertical slide columns 17 are plugged and fixed to the triangular plate 14. The triangular plate 14 is slidably engaged in the travel groove 15, and the vertical back plate 16 and the vertical slide column 17 clamp the corresponding left translation arm 3 or right translation arm 4 in a gap; guide push walls 18 are bolted on both sides of the inner wall of the assembly frame 1, and the guide push walls 18 protrude toward the center of the assembly frame 1; an extension arm 19 is bolted on the triangular plate 14, and a roller 20 is rotatably connected to the end of the extension arm 19, and the circumferential surface of the roller 20 rolls and rubs against the guide push wall 18; a reset tension spring 21 is arranged between the vertical back plate 16 and the corresponding left translation arm 3 and right translation arm 4.

[0033] When the driving component drives the left translation arm 3 and the right translation arm 4 to slide toward each other, the four rollers 20 roll forward synchronously along the corresponding guide push walls 18, so that the two guide push walls 18 push the four triangular plates 14 to slide synchronously toward the center of the central groove 2, and then push the garbage bags to further gather toward the center, thereby achieving the technical effect of further shortening the length of the heat sealing line; when the driving component drives the left translation arm 3 and the right translation arm 4 to slide back and forth to reset, the four rollers 20 gradually lose the thrust from the guide push walls 18. During this process, the reset tension spring 21 synchronously releases elastic potential energy, pulling the triangular plate 14 to reset and slide, until the left translation arm 3 and the right translation arm 4 are reset to the predetermined position, and the four triangular plates 14 are synchronously reset to the farthest distance, thereby reducing the influence of the opening size of the garbage bag due to the addition of the triangular plates 14.

[0034] The specific structure of the heat sealing component is as follows: Figure 3 , Figure 5 As shown, the heat sealing assembly includes a heat insulating strip 22 fixed to the left translation arm 3, a heat sealing seat 23 fixedly installed on the right translation arm 4, and a heating strip 24 arranged on the heat sealing seat 23. The heating strip 24 and the heat insulating strip 22 are gap-matched, and the gap between the two is smaller than the thickness of the garbage bag. The heat sealing assembly utilizes the heating strip 24 of the right translation arm 4 to melt the garbage bag, and utilizes the heat insulating strip 22 to reduce the diffusion of heat, so that the molten liquid squeezed downward and upward solidifies faster, effectively improving the efficiency of sealing and bottom sealing.

[0035] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A central sealing device for a smart trash can, comprising an assembly frame (1) mounted on the open end of the trash can, characterized in that: The center of the assembly frame (1) is provided with a center slot (2) for a garbage bag to pass through; the assembly frame (1) is relatively slidably connected with a left translation arm (3) and a right translation arm (4); the assembly frame (1) is provided with a driving component, the driving component pushes the left translation arm (3) and the right translation arm (4) to close together at the center line of the center slot (2); and the opposite surfaces of the left translation arm (3) and the right translation arm (4) are provided with a heat sealing component; The driving assembly comprises a screw rod (5) rotatably connected to the assembly frame (1), a servo motor (6) fixedly mounted on the assembly frame (1) and used to drive the screw rod (5), and a threaded sleeve (7) arranged at one end of the left translation arm (3) and the right translation arm (4), wherein the screw rod (5) is divided into two sections with the midpoint of the length as the boundary, the two sections have opposite thread directions and are respectively threadably matched with the two threaded sleeves (7); The assembly frame (1) is provided with a first micro switch (8), and the threaded sleeve (7) of the left translation arm (3) triggers the first micro switch (8) after being moved back and reset; The screws (5) are specifically two in number, namely screw A (51) and screw B (52), both of which include a threaded section (10) and a smooth section (11); The threaded sleeve (7) at one end of the left translation arm (3) is threadably engaged with the threaded section (10) of the screw rod A (51), and the other end thereof is slidably engaged with the smooth section (11) of the screw rod B (52); The threaded sleeve (7) at one end of the right translation arm (4) is threadably engaged with the threaded section (10) of the screw rod B (52), and the other end thereof is slidably engaged with the smooth section (11) of the screw rod A (51); The assembly frame (1) is provided with a second micro switch (12) and a third micro switch (13); when the left translation arm (3) and the right translation arm (4) are in a closed state, the smooth sleeves of the two arms respectively trigger the second micro switch (12) and the third micro switch (13); Triangular plates (14) are respectively provided at both ends of the opposite surfaces of the left translation arm (3) and the right translation arm (4); the triangular plates (14) are right triangles when viewed from above, and the hypotenuses of the four triangular plates (14) face the center of the central groove (2); The left translation arm (3) and the right translation arm (4) are each provided with a travel groove (15) corresponding to each triangular plate (14); the triangular plate (14) is provided with a vertical back plate (16) and at least two vertical sliding columns (17); the triangular plate (14) is slidably engaged in the travel groove (15); the vertical back plate (16) and the vertical sliding column (17) are gap-clamped to hold the corresponding left translation arm (3) or right translation arm (4); Guide push walls (18) are provided on both sides of the inner wall of the assembly frame (1), and the guide push walls (18) protrude toward the center of the assembly frame (1); the triangular plate (14) is provided with an extension arm (19), and the end of the extension arm (19) is rotatably connected to a roller (20), and the circumferential surface of the roller (20) rolls and rubs against the guide push wall (18); A return tension spring (21) is provided between the vertical back plate (16) and the corresponding left translation arm (3) and right translation arm (4).

2. The central sealing device for a smart trash can according to claim 1, characterized in that: The output shaft of the servo motor (6) is coaxially connected to one end of the screw rod B (52), and a synchronous belt assembly (61) is provided to be transmission-connected to one end of the screw rod A (51).

3. The central sealing device for a smart trash can according to claim 1, characterized in that: The heat sealing assembly comprises a heat insulating strip (22) fixedly connected to the left translation arm (3), a heat sealing seat (23) fixedly mounted on the right translation arm (4), and a heating strip (24) arranged on the heat sealing seat (23), wherein the heating strip (24) is clearance-matched with the heat insulating strip (22).

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