Bending cover-closing device for side plate of packaging box cover

Abstract

The utility model relates to the technical field of packaging boxes, and discloses a bending cover-closing device for a side plate of a box cover of a packaging box, which comprises an operating platform, the cover closing device comprises a feeding unit arranged at one end of the operation table, a cover opening unit arranged on one side of the feeding unit in the feeding direction, a positioning restraining unit arranged on one side of the cover opening unit and a bending cover closing unit arranged on one side opposite to the positioning restraining unit, and the feeding unit is used for transferring a packaging box to be covered. The feeding unit is used for feeding a packaging box, the uncovering unit is used for opening an upper cover of the packaging box, the positioning and restraining unit is used for fixing a box body of the packaging box, and the bending and covering unit is used for bending two side plates of a box cover of the packaging box and closing the box cover. And automatic and efficient cover closing operation is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of packaging boxes, and specifically to a bending and closing device for the side panel of a packaging box lid. Background Technology

[0002] In modern packaging production lines, box closing is a crucial step that directly affects the product's appearance and portability. People pay close attention to health in daily life, and weight control is essential. Therefore, electronic scales are widely used. During the production of electronic scales, they need to be boxed, thus requiring the use of box closing machines.

[0003] Another point is that, as disclosed in Chinese Patent CN202022224083.6, an electronic scale packaging box includes a first base plate, with first side plates on both the left and right sides of the first base plate, and second and third side plates on the upper and lower sides of the first base plate respectively. The third side plate is connected to a fourth side plate, wherein a tear line is provided in the middle part of the third side plate, and several first through holes are provided on the fourth side plate. This utility model adopts an integrated design, which is conducive to the production and transportation of the packaging box. The folding and assembly process is simple. By providing a tear line on the third side plate, which is located inside the box, it is convenient to take out the product while ensuring the strength of the packaging mechanism and providing good protection and reliability. By providing several through holes on the fourth side plate, the scale feet are suspended while fixing the scale body, which better protects the electronic scale body. Although this utility model solves the problem of the packaging box, it does not have a specific solution for closing the lid during the packaging process of the electronic scale. If manual packaging is used, there will be problems such as low packaging efficiency, insufficient production capacity, and high cost.

[0004] Meanwhile, Chinese patent CN202410043147.2 discloses a capping mechanism, which specifically relates to a cap gripping device, a capping mechanism, and a capping method. Compared with existing technologies, it can meet the capping needs of large batches of reagent bottles and effectively improve the capping efficiency of reagent bottles. CN201911302752.2 discloses a capping mechanism for packaging boxes, which includes a first capping mechanism and a third capping mechanism. The first capping mechanism and the third capping mechanism are respectively arranged on one side of the conveyor belt, and the third capping mechanism is located in front of the third capping mechanism in the corresponding conveying direction. By using the first capping mechanism and the third capping mechanism, the capping action is decomposed into two steps. The first capping mechanism can cover the top surface of the vertically opened packaging box, and the third capping mechanism can completely close the packaging box, thereby replacing manual capping, realizing automation, improving capping efficiency, and reducing labor costs. Although these existing technologies have solved the problem of replacing manual labor, they still have the problem of not being suitable for packaging boxes for electronic scales. Summary of the Invention

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a bending and closing device for the side panel of a packaging box lid. Through a feeding unit, including first, second, and third transfer mechanisms and a driving mechanism, these mechanisms are tightly connected by connectors and work together to accurately and efficiently transfer the packaging box to be closed to each workstation, ensuring the continuity of the entire packaging process. The positioning and constraint mechanisms of the positioning and constraint unit cooperate with each other. The positioning mechanism, through components such as a mounting base, mounting parts, a push motor, and a pressing block, utilizes the sliding connection of a fifth guide rail and a fifth slider. The system achieves precise positioning and fixation of the packaging box. The constraint mechanism is connected to the positioning mechanism via a Z-shaped connector. Driven by the constraint motor, it causes the constraint beam and rollers to press down, ensuring a tight seal between the packaging box lid and the box body, thus guaranteeing packaging stability. The opening unit utilizes components such as columns, crossbeams, rotary cylinders, rotary shafts, bending arms, and rollers. The rotary cylinder drives the rotary shaft to rotate, raising the bending arm and subsequently causing the rollers to flip the packaging box lid upwards. The operation is simple and efficient. The bending and closing unit works in concert through the first and second bending mechanisms, each using its own lifting components and T-shaped components. The device comprises a T-shaped connector, a bending drive, and a folding plate, which bends the two side panels of the packaging box lid. Simultaneously, the drive component below the T-shaped connector in the first bending mechanism can flexibly adjust the bending distance with the second bending mechanism according to different box sizes, greatly improving the device's versatility and adaptability. The lid-closing mechanism, located between the first and second bending mechanisms, precisely pushes the packaging box lid closed onto the box body through the coordinated operation of a horizontal drive, a third connector, a transverse drive, a vertical drive, a connecting rod, and pulleys, completing the entire lid-closing process. In summary, this lid-closing device addresses the challenge of closing packaging boxes by achieving automated and efficient lid-closing operations through the coordinated cooperation of various units and mechanisms.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A bending and closing device for the side panels of a packaging box lid includes an operating table. The closing device includes a feeding unit at one end of the operating table, an opening unit on one side of the feeding direction of the feeding unit, a positioning and constraint unit on one side of the opening unit, and a bending and closing unit on the opposite side of the positioning and constraint unit. The feeding unit is used to transfer the packaging box to be closed, the opening unit is used to open the top cover of the packaging box, the positioning and constraint unit is used to fix the packaging box body, and the bending and closing unit is used to bend the two side panels of the packaging box lid and close the lid.

[0008] The feeding unit includes a first transfer mechanism, a second transfer mechanism disposed at one end of the first transfer mechanism, a third transfer mechanism disposed at one end of the second transfer mechanism, and a drive mechanism disposed on one side of the third transfer mechanism. The first transfer mechanism, the second transfer mechanism, and the third transfer mechanism are used to transfer packaging boxes. The drive mechanism is used to provide driving force to the third transfer mechanism. The first transfer mechanism and the second transfer mechanism are connected by at least one first connector, and the second transfer mechanism and the third transfer mechanism are connected by at least one second connector.

[0009] The positioning and constraint unit and the feeding unit cooperate to fix the packaging box. The positioning and constraint unit includes a positioning mechanism on one side of the opening unit and a constraint mechanism on one side of the positioning mechanism. The positioning mechanism is used to limit and fix the packaging box, and the constraint mechanism is used to make the upper cover of the packaging box close tightly with the box body.

[0010] The bending and closing unit bends the top cover of the packaging box under the cooperation of the positioning and constraint unit to fix the packaging box. The bending and closing unit includes a first bending mechanism, a second bending mechanism arranged parallel to and equal to the first bending mechanism, and a closing mechanism disposed between the first bending mechanism and the second bending mechanism. The first bending mechanism and the second bending mechanism are used to bend the two side plates of the top cover of the packaging box, and the closing mechanism is used to close the top cover of the packaging box onto the box body.

[0011] The closing device further includes at least two first guide rails disposed between the positioning constraint unit and the bending closing unit, at least four first sliders disposed on the first guide rails, a fixed gantry disposed on one side of the first guide rails, and at least four support frames disposed on the other side of the first guide rails. Two sets of support frames are disposed on one side of the first transfer mechanism and cooperate with the fixed gantry to form a packaging box waiting station for transfer. The other two sets of support frames are disposed on both sides of the positioning constraint unit and cooperate with the fixed gantry to form a packaging box folding and closing station.

[0012] The first transfer mechanism includes a lifting component located above the first guide rail and a clamping component located within the lifting component. The lifting component is used to lift the packaging box placed on the waiting station for transfer, and the clamping component is used to fix the packaging box in the feed direction. The second and third transfer mechanisms have the same internal mechanisms as the first transfer mechanism. The first transfer mechanism is used to transfer the packaging box from the waiting station for transfer to the folding and closing station. The second transfer mechanism is used to transfer the closed packaging box from the folding and closing station to the next working station. The third transfer mechanism is used to transfer the packaging box to the output station.

[0013] The lifting assembly includes a first mounting plate, a first motor located on the lower side of the first mounting plate, a first tray connected to the first motor via a first motor shaft passing through the first mounting plate, at least four first mounting posts located on the upper side of the first mounting plate, at least four first tray posts located at positions opposite to the first tray and the first mounting posts, and at least one second guide rail and a second slider located between the first mounting posts and the first tray posts. The first motor drives the first motor shaft to extend upward, pushing the first tray upward along the second guide rail and lifting the packaging box away from the waiting position for transfer.

[0014] The pressing assembly includes at least two third guide rails arranged parallel and symmetrically in the feed direction, at least two third sliders located on the lower side of the third guide rails, an L-shaped connecting plate on the third slider, a first cylinder located on one side of the L-shaped connecting plate, an L-shaped mounting block connected to the front end of the cylinder via a cylinder shaft, a push head passing through the upper end of the L-shaped mounting block, and a second motor shaft passing through the other side of the L-shaped connecting plate. One end of the second motor shaft is connected to a second motor. The third slider slides forward on the third guide rails with driving force provided by the second motor, causing the push head to press against the packaging box. The first cylinder drives the cylinder shaft to push backward, causing the push head to release the packaging box away from the side of the packaging box.

[0015] The drive mechanism includes a base on the operating table, a third motor at one end of the base, at least one bearing at each end of the base, a threaded shaft connected to the third motor via at least one flange, a fourth guide rail directly below the threaded shaft, a threaded connecting block connected to the guide rail via a fourth slider, a snap-fit ​​component on the upper side of the threaded connecting block, and a snap-fit ​​fastener on the snap-fit ​​component. The snap-fit ​​block is connected to the third transfer mechanism, and the threaded connecting block is threadedly connected to the threaded shaft. When the third motor rotates forward, it drives the threaded shaft to rotate synchronously. The threaded connecting block, which is threadedly engaged with the threaded shaft, slides forward along the fourth guide rail, thereby driving the third transfer mechanism connected to it to move forward.

[0016] The positioning mechanism includes a first mounting base on the operating table, a mounting component above the first mounting base, a push motor at the upper end of the mounting component, and a clamping block at one end of the push motor. The first mounting base and the mounting component are connected by at least two fifth guide rails and a fifth slider. A drive motor is connected below the mounting component to drive the mounting component to move along the fifth guide rails. The constraint mechanism includes a constraint motor connected to one side of the mounting component via a Z-shaped connector, a vertical connecting shaft at the front end of the constraint motor, a constraint beam passing through the vertical connecting shaft, and a roller at each end of the constraint beam. The constraint motor drives the vertical connecting shaft to retract, causing the constraint beam to move downward. The downward pressure of the rollers causes the partially closed upper cover to close onto the box body.

[0017] The opening unit includes a column on one side of the constraint mechanism, a horizontal beam connected to the top of the column, a rotary cylinder on one side of the horizontal beam, a rotary shaft on one side of the rotary cylinder, a bending arm passing through the rotary shaft, and at least one roller at one end of the bending arm. When the rotary cylinder drives the rotary shaft to rotate in the forward direction, one end of the bending arm is lifted upward, thereby causing the box lid to flip up.

[0018] The first bending mechanism includes a horizontal connector connected to the operating table via at least two vertical shafts, a second mounting base disposed above the horizontal connector, a first connecting plate disposed above the second mounting base, a first lifting member disposed on one side of the first connecting plate, a T-shaped connector disposed on one side of the first lifting member, a first bending drive member disposed on one side of the T-shaped connector, and a first folding plate connected to the first bending drive member via a first hinge. The first folding plate is connected to the T-shaped connector via a hinge, and the T-shaped connector and the second mounting base are connected via at least two sixth guide rails and a sixth slide rail. The blocks are connected, and a driving component is connected below the T-shaped connector. The driving component is fixedly connected to the horizontal connector. The driving component is used to adjust the distance between the first bending mechanism and the second bending mechanism for bending the box cover. The second bending mechanism includes a second connecting plate above the horizontal connector, a second lifting component on one side of the second connecting plate, a T-shaped connecting block on one side of the second lifting component, a second bending driving component on one side of the T-shaped connecting block, and a second folding plate connected to the second bending driving component through a second hinge. The second folding plate is connected to the T-shaped connecting block through a hinge.

[0019] The closing mechanism includes a horizontal drive member located between the first bending mechanism and the second bending mechanism, a third connecting member located on the upper side of the horizontal drive member, a transverse drive member located on the side of the third connecting member facing the packaging box, a vertical drive member located at one end of the transverse drive member, a connecting rod located at one end of the vertical drive member, and at least one pulley located on both sides of the connecting rod. The transverse drive member is connected to the vertical drive member via a fourth connecting member. The horizontal drive member and the horizontal connecting member are connected via a connecting seat. The third connecting member and the horizontal connecting member are connected to a seventh slider via a seventh guide rail. The horizontal drive member is connected to the third connecting member via a sliding shaft seat.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. Through the cooperation of the three-level synchronous transfer mechanism (first, second and third transfer mechanisms) and the drive mechanism, the packaging box is seamlessly connected between the processes of "waiting-opening-positioning-bending-closing". The transfer mechanisms are linked by the connecting parts and cooperate with the threaded shaft transmission of the drive mechanism, which significantly improves the circulation efficiency of the packaging box and reduces manual intervention.

[0022] 2. The positioning constraint unit adopts the active positioning method of "push motor + fifth guide rail", combined with the downward pressing mechanism of constraint beam with roller, to achieve precise fixation of the box in three dimensions. The Z-shaped connector makes the constraint force evenly distributed, avoids the deformation of the box, and ensures zero displacement of the box during bending operation.

[0023] 3. The bending mechanism adopts a combination of T-shaped connectors and the sixth guide rail. The distance between the two folding plates can be adjusted in real time through the driving component. It can be compatible with boxes of different specifications. The bending driving component and hinge design make the movement trajectory of the folding plate a progressive arc, avoiding excessive bending of the side plate and damage to the side plate of the packaging box.

[0024] 4. The clamping component of the transfer mechanism is driven by a combination of the third guide rail and the cylinder shaft. The L-shaped mounting block and the push head form a three-point contact clamping. The second motor shaft drives synchronously to ensure that the clamping force on both sides is balanced and to prevent the packaging box from tilting.

[0025] 5. The rotary cylinder of the opening unit drives the bending arm, which, together with the end roller, enables the lid to flip. The contact surface between the roller and the lid is covered with silicone. With the help of an angle sensor, the opening angle is fed back in real time, reducing the breakage rate by more than 90% compared with the traditional suction cup opening method.

[0026] 6. The lid closing mechanism integrates horizontal and vertical dual drive units, and applies progressive downward pressure through the pulley assembly. The pulley trajectory is designed to match the curvature of the lid, and together with the buffer mechanism of the seventh guide rail, the lid closing pressure curve conforms to the mechanical properties of the material, ensuring sealing while avoiding indentation. Attached Figure Description

[0027] Figure 1 This is a perspective view of the present invention.

[0028] Figure 2 This is a layout diagram of the feeding unit of this utility model.

[0029] Figure 3 This is a perspective view of the first, second, and third transfer mechanisms of this utility model.

[0030] Figure 4 This is a schematic diagram of the lifting component structure of this utility model.

[0031] Figure 5 This is a schematic diagram of the clamping component structure of this utility model.

[0032] Figure 6 This is a perspective view of the drive mechanism of this utility model.

[0033] Figure 7 This is a three-dimensional view of the positioning constraint unit of this utility model.

[0034] Figure 8 This is a perspective view of the opening unit of this utility model.

[0035] Figure 9 This is a perspective view of the bending and closing unit of this utility model.

[0036] Figure 10 This is a schematic diagram of the first and second bending mechanisms of this utility model.

[0037] Figure 11 This is a perspective view of the lid closing mechanism of this utility model.

[0038] Explanation of icon numbers:

[0039] 1-Operating table, 2-Feeding unit, 20-First transfer mechanism, 200-Lifting assembly, 2000-First mounting plate, 2001-First motor, 2002-First motor shaft, 2003-First tray, 2004-First mounting column, 2005-First tray column, 2006-Second guide rail, 2007-Second slider, 201-Clamping assembly, 2010-Third guide rail, 2011-Third slider, 2012-L-shaped connecting plate, 2013-First cylinder, 2014-Cylinder shaft, 2015-L-shaped mounting block, 2016-Push head, 2017-Second motor shaft 2018-Second Motor, 21-Second Transfer Mechanism, 22-Third Transfer Mechanism, 23-Drive Mechanism, 230-Base, 231-Third Motor, 232-Shaft Seat, 233-Flange, 234-Threaded Shaft, 235-Fourth Guide Rail, 236-Fourth Slider, 237-Threaded Connecting Block, 238-Snap-fit ​​Part, 239-Snap-fit ​​Block, 24-First Connecting Part, 25-Second Connecting Part, 3-Positioning Constraint Unit, 30-Positioning Mechanism, 300-First Mounting Base, 301-Mounting Part, 302-Push Motor, 303-Clamping Block, 304-Fifth Guide Rail, 305-The 5. Slider, 306-Drive motor, 31-Constraint mechanism, 310-Z-type connector, 311-Constraint motor, 312-Vertical connecting shaft, 313-Constraint beam, 45-Roller, 5-Bending and closing unit, 50-First bending mechanism, 500-Vertical shaft, 501-Horizontal connector, 502-Second mounting base, 503-First connecting plate, 504-First lifting component, 505-T-type connector, 506-First bending drive component, 507-First hinge component, 508-First folding plate, 509-Hinge, 50a-Sixth guide rail, 50b-Sixth slider, 50c-Driver component, 5 1-Second bending mechanism, 510-Second connecting plate, 511-Second lifting component, 512-T-shaped connecting block, 513-Second bending drive component, 514-Second hinge component, 515-Second folding plate, 52-Box cover mechanism, 520-Horizontal drive component, 521-Third connecting component, 522-Transverse drive component, 523-Vertical drive component, 524-Connecting rod, 525-Pulley, 526-Fourth connecting component, 527-Connecting seat, 528-Seventh guide rail, 529-Seventh slider, 530-Sliding shaft seat, 6-First guide rail, 7-First slider, 8-Fixed gantry, 9-Support frame. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings:

[0041] like Figure 1-11As shown, this utility model relates to a bending and closing device for the side panels of a packaging box lid. It includes an operating table 1. The closing device includes a feeding unit 2 at one end of the operating table 1, an opening unit 4 on one side of the feeding direction of the feeding unit 2, a positioning and constraint unit 3 on one side of the opening unit 4, and a bending and closing unit 5 on the opposite side of the positioning and constraint unit 3. The feeding unit 2 is used to transfer the packaging box to be closed, the opening unit 4 is used to open the top cover of the packaging box, the positioning and constraint unit 3 is used to fix the packaging box body, and the bending and closing unit 5 is used to bend the side panels of the packaging box lid and close the lid. The feeding unit 2 includes a first transfer mechanism 20, a second transfer mechanism 21 on the feeding direction of the first transfer mechanism 20, a third transfer mechanism 22 on the feeding direction of the second transfer mechanism 21, and a driving mechanism 23 on one side of the third transfer mechanism 22. The first transfer mechanism 20, the second transfer mechanism 21, and the third transfer mechanism... 22 is used to transfer the packaging box. The driving mechanism 23 is used to provide driving force to the third transfer mechanism 22. The first transfer mechanism 20 and the second transfer mechanism 21 are connected by at least one first connector 24. The second transfer mechanism 21 and the third transfer mechanism 22 are connected by at least one second connector 25. The positioning and constraint unit 3 includes a positioning mechanism 30 and a constraint mechanism 31 disposed on one side of the positioning mechanism 30. The positioning mechanism 30 is used to limit and fix the packaging box. The constraint mechanism 31 is used to make the upper cover of the packaging box close tightly with the box body. The bending and closing unit 5 includes a first bending mechanism 50, a second bending mechanism 51 arranged parallel and equidistant from the first bending mechanism 50, and a closing mechanism 52 disposed between the first bending mechanism 50 and the second bending mechanism 51. The first bending mechanism 50 and the second bending mechanism 51 are used to bend the two side plates of the upper cover of the packaging box. The closing mechanism 52 is used to make the upper cover of the packaging box close to the box body.

[0042] like Figure 1-11 As shown, the closing device also includes at least two first guide rails 6 disposed between the positioning constraint unit 3 and the bending closing unit 5, at least four first sliders 7 disposed on the first guide rails 6, a fixed gantry 8 disposed on one side of the first guide rails 6, and at least four support frames 9 disposed on the other side of the first guide rails 6. Two sets of support frames 9 are fixedly installed on one side of the first transfer mechanism 20 and cooperate with the fixed gantry 8 to form a packaging box waiting station for transfer. The other two sets of support frames 9 are respectively installed and fixed on both sides of the positioning constraint unit 3 and cooperate with the fixed gantry 9 to form a packaging box folding and closing station.

[0043] like Figure 1-11As shown, the first transfer mechanism 20 includes a lifting component 200 and a pressing component 201 disposed within the lifting component 200. The lifting component 200 is used to lift the packaging box placed on the waiting station for transfer, and the pressing component 201 is used to fix the packaging box in the feeding direction. The second transfer mechanism 21 and the third transfer mechanism 22 have the same internal structure as the first transfer mechanism 20. The first transfer mechanism 20 is used to transfer the packaging box from the waiting station for transfer to the folding and closing station. The second transfer mechanism 21 is used to transfer the closed packaging box from the folding and closing station to the next working station. The third transfer mechanism 22 is used to transfer the packaging box to the output station. Through the arrangement of the first transfer mechanism 20, the second transfer mechanism 21 and the third transfer mechanism 22, the packaging box to be closed is transferred from the waiting station for transfer to the folding and closing station in one operation, and the closed packaging box is transferred from the folding and closing station to the next working station, which effectively improves the working efficiency of closing the packaging box.

[0044] like Figure 1-11 As shown, the lifting assembly 200 includes a first mounting plate 2000, a first motor 2001 located on the lower side of the first mounting plate 2000, a first tray 2003 connected to the first motor 2001 via a first motor shaft 2002 passing through the first mounting plate 2000, at least four first mounting posts 2004 located on the upper side of the first mounting plate 2000, at least four first tray posts 2005 located at positions opposite to the first tray 2003 and the first mounting posts 2004, and at least one second guide rail 2006 and a second slider 2007 located between the first mounting posts 2004 and the first tray posts 2005. The first motor 2001 drives the first motor shaft 2002 to extend upward, pushing the first tray 2003 up along the second guide rail 2006 to lift the packaging box away from the waiting station for transfer.

[0045] like Figure 1-11As shown, the clamping assembly 201 includes at least two third guide rails 2010 arranged parallel and symmetrically in the feed direction, at least two third sliders 2011 disposed on the lower side of the third guide rails 2010, an L-shaped connecting plate 2012 disposed on the third slider 2011, a first cylinder 2013 disposed on one side of the L-shaped connecting plate 2012, an L-shaped mounting block 2015 connected to the front end of the first cylinder 2013 via a cylinder shaft 2014, a push head 2016 passing through the upper end of the L-shaped mounting block 2015, and a second motor shaft 2017 passing through the other side of the L-shaped connecting plate 2012. One end is connected to the second motor 2018. When the first transfer mechanism 20 is working, the third slider 2011 slides forward on the third guide rail 2010 with the driving force provided by the second motor 2018. As a result, the first cylinder 2013 and the push head 2016 connected to the L-shaped connecting plate 2012 extend outward, so that when the lifting assembly 200 is working, the packaging box falls into the first tray 2003. Then, the first cylinder 2013 pushes the push head 2016 to press against one side of the packaging box. When it is necessary to release the packaging box, the first cylinder 2013 drives the cylinder shaft 2014 to push backward, so that the push head 2016 moves away from the side of the packaging box.

[0046] like Figure 1-11 As shown, the drive mechanism 23 includes a base 230 mounted on the operating table 1, a third motor 231 mounted at one end of the base 230, at least one bearing 232 mounted at each end of the base 230, a threaded shaft 234 connected to the third motor 231 via at least one flange 233, a fourth guide rail 235 located directly below the threaded shaft 234, a threaded connecting block 237 connected to the fourth guide rail 235 via a fourth slider 236, a snap-fit ​​component 238 located on the upper side of the threaded connecting block 237, and a snap-fit ​​block 239 located on the snap-fit ​​component 238. The snap-fit ​​block 239 connects to the third transfer machine. The threaded connecting block 237 is threadedly connected to the threaded shaft 234. When the third motor 231 rotates in the forward direction, it drives the threaded shaft 234 to rotate synchronously. The external thread of the threaded shaft 234 and the internal thread of the threaded connecting block 237 form a sliding relationship. The threaded connecting block 237, which is matched with the threaded shaft 234, slides forward along the fourth guide rail 235, thereby driving the third transfer mechanism 22 connected to the snap-fit ​​block 239 to move along the first guide rail 6. Through the coordinated work of the first transfer mechanism 20, the second transfer mechanism 21 and the third transfer mechanism 22, the feeding and discharging of the packaging box is completed synchronously in one go.

[0047] like Figure 1-11As shown, the positioning mechanism 30 includes a first mounting base 300 mounted on the operating table 1, a mounting member 301 mounted above the first mounting base 300, a push motor 302 mounted on the upper end of the mounting member 301, and a clamping block 303 mounted on one end of the push motor 302. The first mounting base 300 and the mounting member 301 are connected by at least two fifth guide rails 304 and a fifth slider 305. A drive motor 306 is connected below the mounting member 301, and the drive motor 306 is used to drive the mounting member 301. The device moves along the fifth guide rail 304. The constraint mechanism 31 includes a constraint motor 311 connected to one side of the mounting component 301 via a Z-shaped connector 310, a vertical connecting shaft 312 located at the front end of the constraint motor 311, a constraint beam 313 passing through the vertical connecting shaft 312, and a roller 314 located at each end of the constraint beam 313. The constraint motor 311 drives the vertical connecting shaft 312 to retract, causing the constraint beam 313 to move downward, causing the roller 314 to press down on the top cover, so that the not fully closed top cover closes onto the box body.

[0048] like Figure 1-11 As shown, the positioning mechanism 30 includes a first mounting base 300 mounted on the operating table 1, a mounting member 301 mounted above the first mounting base 300, a push motor 302 mounted on the upper end of the mounting member 301, and a clamping block 303 mounted on one end of the push motor 302. The first mounting base 300 and the mounting member 301 are connected by at least two fifth guide rails 304 and a fifth slider 305. A drive motor 306 is connected below the mounting member 301, and the drive motor 306 is used to drive the mounting member 301. The device moves along the fifth guide rail 304. The constraint mechanism 31 includes a constraint motor 311 connected to one side of the mounting component 301 via a Z-shaped connector 310, a vertical connecting shaft 312 located at the front end of the constraint motor 311, a constraint beam 313 passing through the vertical connecting shaft 312, and a roller 314 located at each end of the constraint beam 313. The constraint motor 311 drives the vertical connecting shaft 312 to retract, causing the constraint beam 313 to move downward, causing the roller 314 to press down on the top cover, so that the not fully closed top cover closes onto the box body.

[0049] like Figure 1-11 As shown, the opening unit 4 includes a column 40 on one side of the constraint mechanism 31, a crossbeam 41 horizontally connected to the top of the column 40, a rotary cylinder 42 on one side of the crossbeam 41, a rotary shaft 43 on one side of the rotary cylinder 42, a bending arm 44 passing through the rotary shaft 43, and at least one roller 45 at one end of the bending arm 44. When the rotary cylinder 42 drives the rotary shaft 43 to rotate in the forward direction, one end of the bending arm 44 is lifted upward, thereby causing the top cover of the packaging box to flip up.

[0050] like Figure 1-11As shown, the first bending mechanism 50 includes a horizontal connector 501 connected to the operating table 1 via at least two vertical shafts 500, a second mounting base 502 disposed above the horizontal connector 501, a first connecting plate 503 disposed above the second mounting base 502, a first lifting member 504 disposed on one side of the first connecting plate 503, a T-shaped connector 505 disposed on one side of the first lifting member 504, a first bending drive member 506 disposed on one side of the T-shaped connector 505, and a first folding plate 508 connected to the first bending drive member 506 via a first hinge 507. The first folding plate 508 is connected to the T-shaped connector 505 via a hinge 509. The T-shaped connector 505 and the second mounting base 502 are connected to a sixth slide via at least two sixth guide rails 50a. The T-shaped connector 505 is connected to the horizontal connector 501. The driving component 50c is fixedly connected to the horizontal connector 501. The driving component 50c is used to adjust the distance between the first bending mechanism 50 and the second bending mechanism 51 when bending the box cover. The second bending mechanism 51 includes a second connecting plate 510 above the horizontal connector 501, a second lifting component 511 on one side of the second connecting plate 510, a T-shaped connecting block 512 on one side of the second lifting component 511, a second bending driving component 513 on one side of the T-shaped connecting block 512, and a second folding plate 515 connected to the second bending driving component 513 through a second hinge 514. The second folding plate 515 is connected to the T-shaped connecting block 512 through a hinge 509.

[0051] like Figure 1-11 As shown, the closing mechanism 52 includes a horizontal drive member 520 disposed between the first bending mechanism 50 and the second bending mechanism 51, a third connecting member 521 disposed on the upper side of the horizontal drive member 520, a transverse drive member 522 disposed on the side of the third connecting member 521 toward the packaging box, a vertical drive member 523 disposed at one end of the transverse drive member 522, a connecting rod 524 disposed at one end of the vertical drive member 523, and at least one pulley 525 disposed on both sides of the connecting rod 524. The transverse drive member 522 is connected to the vertical drive member 523 through a fourth connecting member 526. The horizontal drive member 520 is connected to the horizontal connecting member 501 through a connecting seat 527. The third connecting member 521 is connected to the horizontal connecting member 501 through a seventh guide rail 528 and a seventh slider 529. The horizontal drive member 520 is connected to the third connecting member 521 through a sliding shaft seat 530.

[0052] During operation: In the initial stage, the operator places the packaging box to be closed on the waiting station formed by the cooperation of two sets of support frames 9 and fixed gantry 9. At this time, the first transfer mechanism 20 responds quickly and starts working. The first motor 2001 in its lifting component 200 is powered on first, driving the first motor shaft 2002 to extend upward along the axis. This extension action directly acts on the first tray 2003, pushing the first tray 2003 to rise smoothly along the cooperating second guide rail 2006. During the rising process, the first tray 2003 lifts the packaging box and gradually leaves the waiting station. Before the lifting component 200 is about to start working, the pressing component 201 is prepared in advance to press... Under the stable driving force provided by the second motor 2018, the third slider 2011 in the fastening assembly 201 slides forward on the third guide rail 2010, causing the L-shaped connecting plate 2012, which is closely connected to the third slider 2011, to move synchronously. This, in turn, drives the first cylinder 2013 and the push head 2016 connected to the L-shaped connecting plate 2012 to extend outward, making room for the packaging box to fall into the first tray 2003. After the packaging box falls smoothly into the first tray 2003, the first cylinder 2013 responds quickly, pushing the cylinder shaft 2014 through the movement of the internal piston, thereby causing the push head 2016 to press tightly against one side of the packaging box, ensuring that the packaging box remains stable in the subsequent feeding direction. Following this, since the first transfer mechanism 20 is tightly connected to the second transfer mechanism 21 through at least one first connecting member 24, and the second transfer mechanism 21 is securely connected to the third transfer mechanism 22 through at least one second connecting member 25, the third motor 231 in the drive mechanism 23 is mounted on one end of the base 230 on the operating table 1. When the third motor 231 rotates in the forward direction, the output shaft of the third motor 231 drives the threaded shaft 234 connected to it through at least one flange 233 to rotate synchronously. The threads on the outer surface of the threaded shaft 234 and the threads inside the threaded connecting block 237 engage with each other, forming a helical pair motion during rotation, causing the threaded connecting block 237 to move along the first connecting member 234 located directly below the threaded shaft 234. The four guide rails 235 slide smoothly forward, while the snap-fit ​​parts 238 and 239 mounted on the upper side of the threaded connecting block 237 are tightly connected to the third transfer mechanism 22. This allows the sliding of the threaded connecting block 237 to directly drive the third transfer mechanism 22 to move along the first guide rail 6. During this process, the first transfer mechanism 20, the second transfer mechanism 21, and the third transfer mechanism 22 are mechanically linked in an orderly manner, smoothly transferring the packaging box to the next workstation. When the packaging box arrives at the next workstation, the positioning mechanism 30 of the positioning constraint unit 3 immediately starts working. The first mounting base 300 in the positioning mechanism 30 is mounted on the operating table 1. The mounting part 301 above it is slidably connected to the first mounting base 300 through at least two sets of fifth guide rails 304 and fifth sliders 305. After the drive motor 306 connected below the mounting part 301 is powered on and started,The power output from the drive motor 306 is converted into linear motion of the mounting component 301 along the fifth guide rail 304. The push motor 302 at the upper end of the mounting component 301 also works synchronously. The output shaft of the push motor 302 drives the clamping block 303 at one end to limit and fix the packaging box. The precise cooperation between the fifth guide rail 304 and the fifth slider 305 ensures the smoothness and accuracy of the movement of the mounting component 301, allowing the clamping block 303 to act on the packaging box. Subsequently, the opening unit 4 begins to work. The horizontal beam 41 connected to the top of the column 40 in the opening unit 4 provides stable support for the entire mechanism. The rotary cylinder 42 installed on one side of the beam 41 is the power source. When the rotary cylinder 42 is driven forward, its internal piston rotates under the push of compressed gas, thereby driving the connected rotary shaft 43 to rotate synchronously. The rotation of the rotary shaft 43 causes one end of the bending arm 44 passing through it to lift upwards. At least one... During the lifting process, roller 45 contacts the top cover of the packaging box and applies an upward force, thus slowly flipping the top cover upward. During this process, the precise control of rotary cylinder 42 and bending arm 44 ensure that the top cover can be opened smoothly. Flipping the top cover by roller 45 will not cause any damage to the packaging box. Immediately afterwards, bending and closing unit 5 starts to work. The first bending mechanism 50 and the second bending mechanism 51 work together to bend the side panel of the packaging box. The first bending mechanism 50 is firmly connected to the operating table 1 through at least two vertical shafts 500, which provide reliable support for the entire mechanism. The second mounting base 502 and the first connecting plate 503 are installed sequentially above the horizontal connecting member 501. The first lifting member 504 connected to one side of the first connecting plate 503 can be adjusted according to actual needs to provide a suitable height position for subsequent bending operations. The T-shaped connecting member 505 on one side of the first lifting member 504 is connected to the second mounting base 502 through at least two sets of sixth guide rails 50a and sixth sliders 50b, which ensures that the T-shaped connecting member 505 is connected to the second mounting base 502 through at least two sets of sixth guide rails 50a and sixth sliders 50b. The T-shaped connector 505 ensures both flexibility and stability in its movement. A first bending drive 506, installed on one side of the T-shaped connector 505, serves as the power source for the first folding plate 508. When the first bending drive 506 is activated, it drives the first folding plate 508 to rotate around the hinge 509 connected to the T-shaped connector 505 via the first hinge 507, thus bending one side of the packaging box lid. Simultaneously, the second bending mechanism 51 also operates synchronously. The second lifting member 511, connected to the second connecting plate 510 of the second bending mechanism 51, can also be height-adjusted according to the actual height of the packaging box. The T-shaped connecting block 512 on one side of the second lifting member 511 closely cooperates with the second connecting plate 510. The second bending drive 513, installed on one side of the T-shaped connecting block 512, drives the second folding plate 515 to rotate around the hinge 509 connected to the T-shaped connecting block 512 via the second hinge 514, bending the other side of the packaging box lid. During the bending process…The first bending mechanism 50 and the second bending mechanism 51 work in a highly coordinated manner. According to preset programs and parameters, under the action of their respective driving components, they simultaneously bend the two side panels of the packaging box lid, ensuring that the side panels are bent under the same time and force, allowing the packaging box lid to accurately fit the box body. Furthermore, the driving component 50c connected below the T-shaped connector 505 in the first bending mechanism 50 can flexibly adjust the distance between the first bending mechanism 50 and the second bending mechanism 51 when bending the box lid, according to packaging boxes of different widths, further improving the versatility and adaptability of the device. Afterwards, the lid-closing mechanism 52 begins operation. Located between the first bending mechanism 50 and the second bending mechanism 51, its horizontal driving component 520 is securely connected to the horizontal connecting component 501 via a connecting seat 527, providing a horizontal movement basis for the entire lid-closing mechanism. The third connecting component 521 mounted on the upper side of the horizontal driving component 521 is connected to the horizontal connecting component 501 via a seventh guide rail 528 and a seventh slider 529, allowing the third connecting component to... Part 521 can slide smoothly in the horizontal direction. The horizontal drive 522, connected to one side of the third connector 521, is connected to the vertical drive 523 via the fourth connector 526. All three work together. After the horizontal drive 520 is powered on, it drives the third connector 521 to slide on the seventh guide rail 528 via the sliding shaft seat 530, adjusting the horizontal position of the closing mechanism 52. The horizontal drive 522 and the vertical drive 523 move in the horizontal and vertical directions respectively according to a preset program and signals. The movement of 522 drives the vertical drive member 523 to move horizontally. The connecting rod 524 connected to one end of the vertical drive member 523 and the pulleys 525 on both sides of the connecting rod 524 also move accordingly. During this process, the horizontal drive member 520, the transverse drive member 522, and the vertical drive member 523 work closely together, causing the pulleys 525 on the connecting rod 524 to precisely push the packaging box lid, gradually closing it onto the box body. Finally, the constraint mechanism 31 of the positioning constraint unit 3 completely closes the lid. The constraint mechanism 31, via Z... The connecting piece 310 is connected to one side of the mounting piece 301 in the positioning mechanism 30. The constraint motor 311 in the constraint mechanism 31 is a power element. When the constraint motor 311 starts, it drives the vertical connecting shaft 312 at the front end to retract. The retraction of the vertical connecting shaft 312 causes the constraint beam 313 passing through it to move downward. The rollers 314 installed at both ends of the constraint beam 313 contact the top cover of the packaging box during the downward movement and apply downward pressure to it, ensuring that the top cover, which is not fully closed, is tightly closed onto the box body. This completes the entire process of closing the side panel of the packaging box. During the operation of the entire closing device, the various mechanisms work closely together and collaboratively, fully demonstrating the precision and efficiency of the device. It can quickly and accurately complete the task of closing the packaging box and meet the actual needs of the production line.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Therefore, without departing from the design spirit of the present utility model, any equivalent changes or modifications made by those skilled in the art to the structure, features and principles of the present utility model should fall within the protection scope of the patent application of the present utility model.

Claims

1. A folding and covering device for side panels of a box cover of a carton, comprising an operating table, characterized in that: The cover closing device comprises a feeding unit arranged at one end of the operation table, an uncovering unit arranged at one side of the feeding unit in the feeding direction, a positioning and restraining unit arranged at one side of the uncovering unit, and a bending and cover closing unit arranged at the opposite side of the positioning and restraining unit. The feeding unit is used to transfer the packaging box to be closed, the uncovering unit is used to open the upper cover of the packaging box, the positioning and restraining unit is used to fix the box body of the packaging box, and the bending and cover closing unit is used to bend the two side plates of the upper cover of the packaging box and close the upper cover. The feeding unit comprises a first transfer mechanism, a second transfer mechanism arranged at one end of the first transfer mechanism, a third transfer mechanism arranged at one end of the second transfer mechanism, and a driving mechanism arranged at one side of the third transfer mechanism. The first, second and third transfer mechanisms are used to transfer the packaging box, and the driving mechanism is used to provide driving force for the third transfer mechanism. The first transfer mechanism and the second transfer mechanism are connected by at least one first connecting piece, and the second transfer mechanism and the third transfer mechanism are connected by at least one second connecting piece. The positioning and restraining unit cooperates with the feeding unit to fix the packaging box. The positioning and restraining unit comprises a positioning mechanism arranged at one side of the uncovering unit and a restraining mechanism arranged at one side of the positioning mechanism. The positioning mechanism is used to limit and fix the packaging box, and the restraining mechanism is used to make the upper cover of the packaging box close tightly with the box body. The bending and cover closing unit bends the upper cover of the packaging box under the cooperation of the positioning and restraining unit. The bending and cover closing unit comprises a first bending mechanism, a second bending mechanism arranged in parallel with the first bending mechanism, and a cover closing mechanism arranged between the first and second bending mechanisms. The first and second bending mechanisms are used to bend the two side plates of the upper cover of the packaging box, and the cover closing mechanism is used to close the upper cover of the packaging box on the box body.

2. The folding and covering device for the side panels of the lid of a packaging box according to claim 1, characterized in that: The cover closing device further comprises at least two first guide rails arranged between the positioning and restraining unit and the bending and cover closing unit, at least four first sliding blocks arranged on the first guide rails, a fixed gantry arranged at one side of the first guide rails, and at least four support frames arranged at the other side of the first guide rails. Two groups of support frames are arranged at one side of the first transfer mechanism and cooperate with the fixed gantry to form a packaging box waiting transfer station. The other two groups of support frames are arranged at two sides of the positioning and restraining unit and cooperate with the fixed gantry to form a packaging box bending and cover closing station.

3. The folding and covering device for the side panels of the lid of a packaging box according to claim 2, characterized in that: The first transfer mechanism comprises a jacking assembly arranged above the first guide rail and a pressing assembly arranged in the jacking assembly. The jacking assembly is used to lift the packaging box arranged on the waiting transfer station, and the pressing assembly is used to fix the packaging box in the feeding direction. The second and third transfer mechanisms have the same internal mechanisms as the first transfer mechanism. The first transfer mechanism is used to transfer the packaging box from the waiting transfer station to the bending and cover closing station. The second transfer mechanism is used to transfer the packaging box with closed cover from the bending and cover closing station to the next working position. The third transfer mechanism is used to transfer the packaging box to the output station.

4. The folding and covering device for the side panels of the lid of a packaging box according to claim 3, characterized in that: The jacking assembly comprises a first mounting plate, a first motor arranged on the lower side of the first mounting plate, a first tray connected with the first motor through a first motor shaft penetrating the first mounting plate, at least four first mounting columns arranged on the upper side of the first mounting plate, at least four first tray columns arranged at positions opposite to the first mounting columns, at least one second guide rail and a second sliding block arranged between the first mounting columns and the first tray columns, the first motor shaft is driven by the first motor to extend upward, the first tray is pushed to move upward along the second guide rail, and the packaging box is lifted to move away from the waiting station.

5. The folding and covering device for the side panels of the lid of a packaging box according to claim 3, characterized in that: The pressing assembly comprises at least two third guide rails arranged in the feeding direction and symmetrically, at least two third sliding blocks arranged on the lower side of the third guide rails, an L-shaped connecting plate arranged on the third sliding blocks, a first air cylinder arranged on one side of the L-shaped connecting plate, an L-shaped mounting block connected with the front end of the air cylinder through an air cylinder shaft, a pushing head penetrating the upper end of the L-shaped mounting block, and a second motor shaft penetrating the other side of the L-shaped connecting plate, one end of the second motor shaft is connected with a second motor, the third sliding blocks are driven to slide forward on the third guide rails by the driving force provided by the second motor, the pushing head is pressed to one side of the packaging box, and the first air cylinder drives the air cylinder shaft to move backward, so that the pushing head moves away from one side of the packaging box to release the packaging box.

6. The folding and covering device for the side panels of the lid of a packaging box according to claim 1, characterized in that: The driving mechanism comprises a base arranged on the operation table, a third motor arranged at one end of the base, at least one shaft seat arranged at two ends of the base, a threaded shaft connected with the third motor through at least one flange, a fourth guide rail arranged directly below the threaded shaft, a threaded connecting block connected with the guide rail through a fourth sliding block, a clamping piece arranged on the upper side of the threaded connecting block, and a clamping block arranged on the clamping piece, the clamping block is connected with the third transfer mechanism, the threaded connecting block is threadedly connected with the threaded shaft, the third motor is driven to rotate synchronously when the third motor rotates in the forward direction, the threaded connecting block is driven to slide forward along the fourth guide rail through the threaded connection with the threaded shaft, so as to drive the third transfer mechanism connected therewith to move forward.

7. The folding and covering device for the side panels of the lid of a packaging box according to claim 1, characterized in that: The positioning mechanism comprises a first mounting seat arranged on the operation table, a mounting piece arranged above the first mounting seat, a pushing motor arranged at the upper end of the mounting piece, and a pressing block arranged at one end of the pushing motor, the first mounting seat and the mounting piece are connected through at least two fifth guide rails and fifth sliding blocks, a driving motor is connected below the mounting piece, and the driving motor is used to drive the mounting piece to move along the fifth guide rail; the restraint mechanism comprises a restraint motor connected with one side of the mounting piece through a Z-shaped connecting piece, a vertical connecting shaft arranged at the front end of the restraint motor, a restraint beam penetrating the vertical connecting shaft, and one roller arranged at each end of the restraint beam, the restraint motor drives the vertical connecting shaft to retract, so that the restraint beam moves downward, and the upper cover which is not completely closed is closed on the box body through the downward pressing of the roller.

8. The folding and covering device for the side panels of the lid of a packaging box according to claim 1, characterized in that: The cover opening unit comprises a vertical column arranged on one side of the constraint mechanism, a horizontal beam transversely connected to the top end of the vertical column, a rotary cylinder arranged on one side of the horizontal beam, a rotary shaft arranged on one side of the rotary cylinder, a bending arm penetrating the rotary shaft, and at least one roller arranged on one end of the bending arm. When the rotary cylinder drives the rotary shaft to rotate forward, one end of the bending arm is lifted upward, thereby making the cover of the packaging box upwardly flip.

9. The folding and covering device for the side panels of the lid of a packaging box according to claim 1, characterized in that: The first bending mechanism comprises a horizontal connecting piece connected to the operation table through at least two vertical shafts, a second mounting seat arranged above the horizontal connecting piece, a first connecting plate arranged above the second mounting seat, a first lifting piece arranged on one side of the first connecting plate, a T-shaped connecting piece arranged on one side of the first lifting piece, a first bending driving piece arranged on one side of the T-shaped connecting piece, a first folding plate connected to the first bending driving piece through a first hinged piece, the first folding plate being connected to the T-shaped connecting piece through a hinge, the T-shaped connecting piece being connected to the second mounting seat through at least two sixth guide rails and sixth sliding blocks, a driving piece being connected below the T-shaped connecting piece, the driving piece being fixedly connected to the horizontal connecting piece, the driving piece being used to adjust the distance between the first bending mechanism and the second bending mechanism for bending the cover; the second bending mechanism comprises a second connecting plate arranged above the horizontal connecting piece, a second lifting piece arranged on one side of the second connecting plate, a T-shaped connecting block arranged on one side of the second lifting piece, a second bending driving piece arranged on one side of the T-shaped connecting block, and a second folding plate connected to the second bending driving piece through a second hinged piece, the second folding plate being connected to the T-shaped connecting block through a hinge.

10. The folding and covering device for the side panels of the lid of a packaging box according to claim 1, characterized in that: The cover closing mechanism comprises a horizontal driving piece arranged between the first bending mechanism and the second bending mechanism, a third connecting piece arranged on the upper side of the horizontal driving piece, a transverse driving piece arranged on one side of the third connecting piece towards the packaging box, a vertical driving piece arranged on one end of the transverse driving piece, a connecting rod arranged on one end of the vertical driving piece, and at least one pulley arranged on both sides of the connecting rod, the transverse driving piece being connected to the vertical driving piece through a fourth connecting piece, the horizontal driving piece being connected to the horizontal connecting piece through a connecting seat, the third connecting piece being connected to the horizontal connecting piece through a seventh guide rail and a seventh sliding block, and the horizontal driving piece being connected to the third connecting piece through a sliding shaft seat.

Images