Cover closing device and packaging production line

Abstract

The utility model provides a cover closing device and a packaging production line, the cover closing device is used for switching a box cover of a packaging box from an open state to a closed state in which the box cover is buckled on a box body of the packaging box, the cover closing device comprises an air blowing part and a cover closing part, the air blowing part comprises a supporting plate, the supporting plate and the horizontal plane are arranged at an angle, and the supporting plate comprises at least one air hole; the positioning part enables the packaging box to be located at the cover closing position, and the cover closing position is located on the side, forming an obtuse angle with the horizontal plane, of the supporting plate in the first direction; the air blowing part sprays air flow through at least one air hole, so that a box cover, making contact with the supporting plate, of the packaging box at the cover closing position is switched to the closed state from the open state. The packaging production line comprises the cover closing device and a material filling device, and the material filling device is configured to fill materials into the box body before the packaging box is located at the cover closing position. According to the cover closing device and the packaging production line, non-contact cover closing can be achieved easily, mechanical abrasion is reduced, and the cover closing time is shortened.

Description

Technical Field

[0001] The present invention relates to an automatic packaging machine, and in particular to a cover closing device and a packaging production line. Background Art

[0002] With the continuous innovation of automated production line technology, the industry's dual requirements for packaging production efficiency and packaging product quality are increasing, and higher standards have been set for the flexibility, efficiency and accuracy of packaging machinery.

[0003] In the related art mechanical lid closing device for closing the lid of a packaging box, its working principle mainly relies on the direct interaction between contact-type mechanical parts to complete the closing and locking of the lid. However, this process is usually accompanied by a series of problems, which are specifically manifested in the following aspects:

[0004] 1. Lengthy action cycle: Traditional lid closing devices such as pushers or pressure rods rely on the series action of multiple mechanical parts. The stroke return time of the pusher or pressure rod will increase the time the packaging box stays at the station, affecting the production speed of the entire packaging production line, thereby reducing production efficiency.

[0005] 2. Mechanical loss caused by high-frequency friction: Frequent contact mechanical movement between mechanical parts not only consumes a lot of kinetic energy, but the friction between the surfaces of parts will also accelerate the wear of the surfaces of parts, especially the key closing mechanisms in the cover closing device, such as springs, rods, camshafts, etc. These closing mechanisms are prone to fatigue damage under long-term operation, shortening their service life, thereby increasing the frequency of equipment maintenance.

[0006] 3. Accuracy and consistency issues: Mechanical wear will lead to decreased action accuracy, affecting the consistency and accuracy of the box closing action, which can easily lead to unstable packaging quality.

[0007] 4. Noise and environmental issues: Mechanical friction can easily generate high noise, which is not conducive to the factory environment and affects the health of operators. Utility Model Content

[0008] The purpose of the present disclosure is to provide a cover closing device and a packaging production line, aiming to solve the problem that in the traditional mechanical cover closing process, frequent friction of closing parts causes mechanical wear, thereby reducing the cover closing efficiency and increasing maintenance costs.

[0009] A first aspect of the present disclosure provides a lid closing device for switching a lid 101 of a packaging box 10 from an open state to a closed state in which the lid 101 is snapped onto a box body 102 of the packaging box 10, comprising: a blowing portion, comprising a support plate, wherein the support plate is arranged at an angle to a horizontal plane, and the support plate comprises at least one air hole; and a positioning portion, configured to locate the packaging box in a lid closing position, wherein the lid closing position is located on a side of the support plate along a first direction that is at an obtuse angle to the horizontal plane; wherein the blowing portion is configured to eject an air flow through the at least one air hole so that the lid of the packaging box in contact with the support plate at the lid closing position is switched from the open state to the closed state.

[0010] In some embodiments of the cover closing device, the positioning portion includes: a positioning element, located below the support plate of the blowing portion, the positioning element including a positioning surface; and a first push element, configured to be movable along the first direction, the first push element including a first push surface, the first push surface and the positioning surface of the positioning element being arranged opposite to each other along the first direction;

[0011] Wherein, when the packaging box is in the closed lid position, the positioning surface is configured to fit with a first side surface of the box body close to the blowing part; the first push surface is configured to fit with a second side surface of the box body opposite to the first side surface along the first direction.

[0012] In some embodiments of the lid closing device, the positioning portion includes a first detection device, which is configured to detect whether the packaging box is located in the lid closing position, and when the first detection device detects that the packaging box is located in the lid closing position, the blowing portion is configured to spray the airflow.

[0013] In some embodiments of the cover closing device, a pressing portion is further included, which includes: a pressure head; and a first driving device, which is drivingly connected to the pressure head and is configured to drive the pressure head to move so that the pressure head applies pressure to the box cover in the closed state.

[0014] In some embodiments of the lid closing device, the pressing portion is located on one side of the blowing portion along a second direction forming an angle with the first direction, and the lid closing device also includes a moving portion, at least a portion of which is configured to be movable along the second direction so that the packaging box moves along the second direction from the lid closing position to below the pressure head of the pressing portion.

[0015] In some embodiments of the cover closing device, the moving portion includes: a second pushing element, including a second pushing surface, the second pushing surface is arranged on a side of the second pushing element close to the pressing portion along the second direction, and the second pushing surface is configured to contact a third side surface of the box body away from the pressing portion along the second direction; and

[0016] The second driving device is drivingly connected to the second pushing element and is configured to drive the second pushing element to move along the second direction so as to move the packaging box along the second direction from the closed cover position toward below the pressure head of the pressing portion.

[0017] In some embodiments of the cover closing device, the second driving device is configured to drive the second pushing element to move along the second direction so that the packaging box moves from the cover closing position to a transfer position between the blowing part and the pressing part;

[0018] The moving part further includes a first conveying device, wherein the first conveying device includes a first conveying part, and the first conveying part is configured to drive the packaging box to move from the conveying position to below the pressing head of the pressing part.

[0019] In some embodiments of the cover closing device, the first conveying portion includes a first conveying belt, and the conveying direction of the first conveying belt is set to extend along the second direction from a side close to the blowing portion to a side away from the blowing portion;

[0020] The first conveying device also includes a third pushing element, which is fixedly arranged on the first conveyor belt, and the third pushing element includes a third pushing surface, wherein the third pushing element is configured as follows: when the packaging box is located at the conveying position, the third pushing element moves along with the first conveyor belt until the third pushing surface contacts the third side surface of the box body to push the packaging box to move onto the first conveyor belt and move from the conveying position to below the pressure head along the conveying direction of the first conveyor belt.

[0021] In some embodiments of the cover closing device, the first conveying device also includes a second detection device, and the second detection device is configured to detect whether the packaging box is located at the conveying position. When the second detection device detects that the packaging box is located at the conveying position, the first conveying part is configured to move the packaging box along the second direction toward the side close to the pressing part so as to move from the conveying position to below the pressure head of the pressing part.

[0022] In some embodiments of the cover closing device, the support plate includes a plurality of air holes, and the plurality of air holes are distributed in a rectangular array on the support plate.

[0023] In some embodiments of the lid closing device, the lid closing device also includes a second conveying device, which is configured to convey the packaging box with the lid in the open state to the lid closing position, wherein the second conveying device includes a second conveyor belt, and the conveying direction of the second conveyor belt is set to extend along the first direction from the side away from the blowing part to the side close to the blowing part; the positioning part includes a first pushing and blocking element, and the first pushing and blocking element is fixedly arranged on the second conveyor belt; when the packaging box is located on the side of the first pushing and blocking element along the first direction close to the blowing part, the second conveyor belt drives the packaging box to move to the lid closing position by driving the first pushing and blocking element to move along the conveying direction of the second conveyor belt.

[0024] A second aspect of the present disclosure provides a packaging production line, comprising: the lid closing device described in the first aspect of the present disclosure; and a filling device configured to fill materials into the box body before the packaging box is located in the lid closing position.

[0025] Based on the lid closing device provided by the present disclosure, by providing an air blowing part and a positioning part, the positioning part is used to fix the packaging box in the lid closing position, and the airflow ejected from the air hole provided on the air blowing part forms a force on the lid of the packaging box, so that the lid is switched from the open state to the closed state. This setting is conducive to closing the lid only by the action of blowing, that is, realizing contactless lid closing, which not only reduces mechanical wear and prolongs the service life of the device, but also reduces the time required for lid closing, thereby facilitating improving the working efficiency of the lid closing device.

[0026] The packaging production line disclosed in the present invention comprises the cover closing device disclosed in the present invention, thereby having the advantages of the cover closing device disclosed in the present invention.

[0027] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0029] Figure 1 It is a structural schematic diagram of a cover closing device according to an embodiment of the present disclosure;

[0030] Figure 2 for Figure 1 The structural schematic diagram of the cover closing device shown in FIG. 1 shows two packaging boxes.

[0031] Figure 1 and2 In the figure, each reference numeral represents:

[0032] 10. packaging box, 101. box cover, 102. box body;

[0033] 1. Blowing part, 11. Support plate, 11a. Air hole, 12. Back plate, 21. Positioning element, 21A. Positioning surface, 22. First pushing element, 22A. First pushing surface, 3. Pressing part, 31. Pressing head, 31A. Pressing surface, 32. First driving device, 33. First fixed bracket, 41. Second pushing element, 41A. Second pushing surface, 411. Connecting plate, 42. Second driving device, 421. Second fixed bracket, 422. Slider, 43. First conveyor belt, 44. Rotating wheel, 45. Third pushing element, 45A. Third pushing surface, 53. Second conveyor belt, A. First direction, B. Second direction. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0035] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present disclosure. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] In the description of the present disclosure, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0037] In the description of the present disclosure, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, upright, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0038] In the following description, the first direction A and the second direction B referred to in this embodiment are as follows: Figure 1 and Figure 2 The arrows shown point in the direction.

[0039] The disclosed embodiment provides a cover closing device for switching a box cover 101 of a packaging box 10 from an open state to a closed state in which the cover 101 is buckled onto a box body 102 of the packaging box 10 .

[0040] The cover closing device includes a blowing part 1 and a positioning part. The blowing part 1 includes a support plate 11, and the support plate 11 is arranged at an angle with the horizontal plane. The support plate 11 includes at least one air hole 11a. For example, an air hole 11a can be arranged at the center of the support plate 11, and the radial dimension of the air hole 11a can be set to one third to one quarter of the length of the support plate 11. For another example, a plurality of air holes 11a can also be set, and the plurality of air holes 11a can be arranged and distributed in any shape such as a circle, annular, square, etc.

[0041] The positioning portion is configured to place the packaging box 10 in the closed cover position, such as Figure 1 As shown, the cover-closed position is located on one side of the support plate 11 that is at an obtuse angle to the horizontal plane along the first direction A. The air blowing unit 1 is configured to eject air through at least one air hole 11a so that the box cover 101 of the packaging box 10 in contact with the support plate 11 at the cover-closed position is switched from an open state to a closed state.

[0042] By providing the air blowing part 1 and the positioning part, the packaging box 10 is fixed in the lid closing position by the positioning part, and the airflow ejected by the air hole 11a provided on the air blowing part 1 forms a force on the lid 101 of the packaging box 10, so that the lid 101 is switched from the open state to the closed state. This setting is conducive to closing the lid only by the action of blowing, that is, realizing contactless lid closing, which not only reduces mechanical wear and prolongs the service life of the equipment, but also reduces the time required for closing the lid, thereby helping to improve the working efficiency of the lid closing device. In addition, snapping the lid 101 by blowing is conducive to flexibly setting the size and shape of the lid 101. On the other hand, closing the lid by the contactless lid closing method of the present application is conducive to reducing environmental noise.

[0043] In some embodiments, the positioning portion includes: a positioning element 21 and a first push element 22. The positioning element 21 is located below the support plate 11 of the blowing portion 1, and the positioning element 21 includes a positioning surface 21A. For example, the positioning element 21 can be configured as follows: Figure 1 The positioning plate shown in the figure can be arranged below the support plate 11 perpendicular to the first direction A, and the upper edge of the positioning element 21 is connected to the lower edge of the support plate 11. This arrangement arranges the positioning part and the blowing part 1 in the vertical direction, which is beneficial to reducing the occupied space.

[0044] The first push-blocking element 22 is configured to be movable along the first direction A. For example, the first push-blocking element 22 may be fixedly disposed on a Figure 1 The second conveyor belt 53 is shown in the figure, thereby moving along the first direction A with the second conveyor belt 53.

[0045] The first blocking element 22 includes a first blocking surface 22A, and the first blocking surface 22A is disposed along the first direction A opposite to the positioning surface 21A of the positioning element 21 .

[0046] When the packaging box 10 is in the closed position, the positioning surface 21A is configured to fit with the first side surface of the box body 102 close to the blowing portion 1; the first push surface 22A is configured to fit with the second side surface of the box body 102 that is opposite to the first side surface along the first direction A. Figure 1 and Figure 2 As shown, the box body 102 can be a rectangular parallelepiped, and the positioning surface 21A and the first blocking surface 22A can be set as surfaces perpendicular to the first direction A.

[0047] The positioning part includes a positioning element 21 and a first push-blocking element 22, and the positioning surface 21A of the positioning element 21 and the first push-blocking surface 22A of the first push-blocking element 22 are arranged relatively along the first direction A, so that the positioning part can stabilize the packaging box 10 in the closed cover position, so that the box cover 101 of the packaging box 10 is aligned with the air hole 11a on the support plate 11, so that the airflow ejected from the air hole 11a can accurately act on the box cover 101, so as to improve the success rate of the buckle. In addition, the movably arranged first push-blocking element 22 is conducive to stabilizing the packaging box 10 with the box body 102 of different sizes in the closed cover position, thereby improving the applicability of the closed cover device.

[0048] In some embodiments, the positioning unit includes a first detection device. The first detection device is configured to detect whether the packaging box 10 is in the lid-closed position. When the first detection device detects that the packaging box 10 is in the lid-closed position, the blowing unit 1 is configured to spray airflow.

[0049] For example, the first detection device may be a proximity switch, and when the packaging box 10 reaches the cover-closed position, the proximity switch is closed, the circuit is connected, and the air blowing unit 1 is controlled to eject airflow. For another example, the first detection device may be an infrared detector, and the air blowing unit 1 includes a controller and a solenoid valve, the controller is connected to the first detection device and the solenoid valve signal, and when the first detection device detects that the packaging box 10 is in the cover-closed position, the first detection device sends a signal to the controller, and the controller controls the solenoid valve to open, thereby providing airflow.

[0050] The above-mentioned controller can be implemented as a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components or any appropriate combination thereof for performing the functions described in the present disclosure.

[0051] This arrangement is conducive to realizing automatic adjustment of the cover closing device, so as to maintain the fastening process of the cover closing device smoothly, thereby improving the efficiency of fastening the box cover 101, reducing manual intervention, and thus helping to reduce labor costs.

[0052] In some embodiments, the cover closing device further comprises a pressing part 3. The pressing part 3 comprises: a pressing head 31 and a first driving device 32. The first driving device 32 is drivingly connected to the pressing head 31 and is configured to drive the pressing head 31 to move so that the pressing head 31 applies pressure to the box cover 101 in the closed state.

[0053] For example, the pressing part 3 can be arranged above the blowing part 1, so as to quickly press the box cover 101 after the blowing part 1 fastens the box cover 101 on the box body 102, thereby further reducing the operation time and improving the operation efficiency. In addition, this arrangement is also conducive to a compact structure and saving space.

[0054] For another example, the pressing portion 3 may also be disposed beside the blowing portion 1 , so as to facilitate the lid closing device to operate multiple packaging boxes 10 simultaneously.

[0055] The pressing part 3 is provided to further improve the sealing performance of the packaging box 10, so as to facilitate the sealed preservation of the items in the packaging box 10. In addition, after the box cover 101 is buckled on the box body 102, the pressing part 3 is used to press the box cover 101, which is conducive to preventing the box cover 101 from loosening or falling off during transportation and handling, thereby helping to reduce the rework rate and improve the packaging quality.

[0056] In some embodiments, the pressing portion 3 is located on one side of the blowing portion 1 along a second direction B that is angled with the first direction A. Figure 1 and Figure 2 As shown, the included angle between the first direction A and the second direction B may be a right angle, and the pressing portion 3 may be located on the left side of the blowing portion 1 along the second direction B.

[0057] The cover closing device further comprises a moving part, at least part of which is configured to be movable along the second direction B, so that the packaging box 10 moves along the second direction B from the cover closing position to below the pressing head 31 of the pressing part 3 .

[0058] The pressing part 3 and the blowing part 1 are arranged at different positions to facilitate the following Figure 2 The cover closing device shown in the figure performs cover closing operation on two packaging boxes 10 at the same time, thereby being conducive to improving the operating speed of the cover closing device and improving production efficiency. In addition, the rapid turning of the movement of the packaging box 10 by the moving part is conducive to the flexible layout of the cover closing device according to the working space.

[0059] In some embodiments, the moving part includes: a second push-blocking element 41 and a second driving device 42. The second driving device 42 is drivingly connected to the second push-blocking element 41, and is configured to drive the second push-blocking element 41 to move along the second direction B to move the packaging box 10 from the closed cover position toward the bottom of the pressing head 31 of the pressing part 3 along the second direction B. The second driving device 42 can extend along the second direction B from a position aligned with the closed cover position to a position aligned with the pressing head 31 of the pressing part 3, so that the second push-blocking element 41 can continuously push the packaging box 10 to the bottom of the pressing head 31.

[0060] The second push-blocking element 41 includes a second push-blocking surface 41A, which is arranged on a side of the second push-blocking element 41 close to the clamping portion 3 along the second direction B, and is configured to contact the second side surface of the box body 102 along the second direction B away from the clamping portion 3.

[0061] The second push surface 41A can be set as a surface perpendicular to the second direction B to increase the contact area between the second push surface 41A and the packaging box 10, thereby facilitating the stable pushing of the packaging box 10 to move along the second direction B. The second push surface 41A can also be set as a surface of any shape that can contact the third side surface of the box body 102. For example, the second push element 41 can be set as a cylindrical rod, and the second push surface 41A is formed as a curved surface. This setting is conducive to simplifying the processing of the second push element 41 and facilitating production and manufacturing.

[0062] In addition, the blowing part 1 may include a timer, which is configured to detect the duration of the airflow. After the airflow continues to be ejected for a duration of the ejection, the second driving device 42 drives the second pushing element 41 to move. The ejection duration may be, for example, 0.5-1 second. This arrangement is conducive to improving the orderliness and consistency of the cover closing action of the cover closing device.

[0063] The second push element 41 and the second drive device 42 are provided to stably move the packaging box 10 from the closed cover position to below the pressure head 31, and are also conducive to reducing manual intervention in the production process, thereby improving production efficiency and reducing labor costs.

[0064] In some embodiments, the second driving device 42 is configured to drive the second pushing element 41 to move along the second direction B so that the packaging box 10 moves from the cover-closing position to a transfer position between the blowing part 1 and the pressing part 3 .

[0065] The moving part further includes a first conveying device. The first conveying device includes a first conveying part. The first conveying part is configured to drive the packaging box 10 to move from the conveying position to below the pressing head 31 of the pressing part 3. The first conveying part may include, for example Figure 1 and Figure 2 The first conveyor belt 43 in.

[0066] The second driving device 42 is configured to drive the second pushing element 41 to move along the second direction B so that the packaging box 10 moves from the cover closing position to the conveying position.

[0067] The first conveying device is advantageous for simplifying the structure of the second driving device, reducing the size of the second driving device along the second direction B, reducing the cost and also reducing the occupied space. The first conveying device includes a first conveyor belt 43, which has a simple structure and is convenient for assembly, disassembly and maintenance.

[0068] In some embodiments, the first conveying part includes a first conveying belt 43 , and the conveying direction of the first conveying belt 43 is set to extend along the second direction B from a side close to the blowing part 1 to a side away from the blowing part.

[0069] The first conveying device further comprises a third push-blocking element 45. Figure 1 and Figure 2 As shown, the third pushing element 45 is fixedly arranged on the first conveyor belt 43. The third pushing element 45 includes a third pushing surface 45A.

[0070] like Figure 2 As shown, the third push-blocking element 45 is configured as follows: when the packaging box 10 is located at the conveying position, the third push-blocking element 45 is located below the top of the rotating wheel 44; the rotating wheel 44 rotates around the axis, and the third push-blocking element 45 moves with the first conveyor belt 43 to the third push-blocking surface 45A to contact the third side surface of the box body 102; the rotating wheel 44 drives the first conveyor belt 43 to move along the second direction B, so that the third push-blocking element 45 pushes the packaging box 10 to move onto the first conveyor belt 43 and moves from the conveying position to below the pressure head 31 along the conveying direction of the first conveyor belt 43. The structure of the arrangement is sophisticated, which is conducive to continuously realizing the positioning and transportation of the packaging box 10 while occupying a small space.

[0071] Providing the third push-blocking element 45 is helpful to effectively avoid the problem of the box body 102 sliding relative to the first conveyor belt 43 due to the decrease in surface roughness of the first conveyor belt 43 after long-term use of the cover closing device. It is helpful to stably move the packaging box 10 from the conveying position to the bottom of the pressure head 31, thereby improving the operating stability of the cover closing device, and is particularly helpful for the orderliness when the cover closing device operates on two packaging boxes 10 at the same time.

[0072] In some embodiments, the first conveying device further comprises a second detection device. The second detection device is configured to detect whether the packaging box 10 is located at the conveying position. When the second detection device detects that the packaging box 10 is located at the conveying position, the first conveying portion is configured to move the packaging box 10 along the second direction B toward a side close to the pressing portion 3, so as to move from the conveying position to below the pressing head 31 of the pressing portion 3.

[0073] The second detection device may be, for example, a proximity switch. When the packaging box 10 reaches the conveying position, the proximity switch is closed to connect the circuit, thereby turning on the motor electrically connected to the rotating wheel 44 to control the movement of the first conveyor belt 43.

[0074] This arrangement is conducive to realizing the automated operation of the cover closing device, thereby improving the fastening efficiency of the box cover 101, reducing manual intervention, and thus helping to reduce labor costs.

[0075] like Figure 1 As shown, in some embodiments, the support plate 11 includes a plurality of air holes 11 a , and the plurality of air holes 11 a are distributed in a rectangular array on the support plate 11 .

[0076] This arrangement is beneficial to increasing the area and strength of the airflow ejected by the blowing part 1, thereby enhancing the magnitude and stability of the force exerted by the airflow on the box cover 101.

[0077] In some embodiments, the lid closing device further comprises a second conveying device. The second conveying device is configured to convey the packaging box 10 with the lid 101 in the open state to the lid closing position. The second conveying device comprises a second conveyor belt 53, and the conveying direction of the second conveyor belt 53 is arranged to extend from a side away from the blowing part 1 to a side close to the blowing part 1 along the first direction A. The positioning portion comprises a first push-blocking element 22, and the first push-blocking element 22 is fixedly arranged on the second conveyor belt 53. When the packaging box 10 is located at a side of the first push-blocking element 22 close to the blowing part 1 along the first direction A, the second conveyor belt 53 drives the first push-blocking element 22 to move along the conveying direction of the second conveyor belt 53 to drive the packaging box 10 to move to the lid closing position.

[0078] This arrangement is conducive to stably moving the packaging box 10 to the lid closing position along the first direction A, and the first push-blocking element 22 of the positioning portion is arranged on the second conveyor belt 53, which is conducive to the use of the second conveyor belt 53 to realize the conveyance and positioning of the packaging box 10 in one piece, thereby facilitating the improvement of the operating efficiency of the lid closing device. In addition, the arrangement has a sophisticated structure and a small space occupancy rate.

[0079] On the other hand, the embodiments of the present disclosure provide a packaging production line, which includes: a lid closing device and a filling device provided in the embodiments of the present disclosure, wherein the filling device is configured to fill materials into the box body 102 before the packaging box 10 is in the lid closing position.

[0080] The packaging production line of the disclosed embodiment has the advantages of the cover closing device of the disclosed embodiment.

[0081] The following combination Figure 1 to Figure 2 The lid closing device and packaging production line of the embodiment of the present disclosure are described in detail. The packaging box 10 involved is a prefabricated strip box for packaging small cigarette boxes. Figure 1 and Figure 2 The first direction A shown is defined as the front-to-back direction, with the direction in which the packaging box 10 is conveyed as "front", and the direction opposite to the "front" as "back"; the second direction B is defined as the left-to-right direction, with the direction in which the packaging box 10 is conveyed as "left", and the direction opposite to the "left" as "right".

[0082] like Figure 1As shown, the cover closing device includes a blowing part 1, a positioning part, a pressing part 3, a moving part and a second conveying device. The packaging box 10 with the cover 101 in the open state is conveyed to the cover closing position along the first direction A by the second conveying device. The blowing part 1 sprays airflow to the cover 101, and the force generated by the sprayed airflow makes the cover 101 snap on the box body 102, even if the cover 101 is in the closed state. The moving part moves the packaging box 10 along the second direction B toward the direction close to the pressing part 3. The pressing part 3 further presses the cover 101 of the packaging box 10 in the closed state.

[0083] The blowing part 1 includes a support plate 11, a back plate 12, a solenoid valve, a timer and a compressor. The back plate 12 is arranged perpendicular to the first direction A. The support plate 11 is arranged at an angle to the horizontal plane. The top edges of the support plate 11 and the back plate 12 are connected, and the bottom edges are arranged relatively along the first direction A, so that the angle between the support plate 11 and the back plate 12 is formed into an acute angle. The support plate 11 includes 5 air holes 11a, wherein four air holes 11a are respectively arranged in the middle of the four edges of the support plate 11, and another air hole 11a is arranged in the center of the support plate 11. This layout is conducive to increasing the uniformity and stability of the force formed by the air flow sprayed to the box cover 101, and reducing the number of air holes 11a opened to save energy. A compressor is arranged on the side of the back plate 12 away from the support plate 11, and the compressor is connected to the air hole 11a, so as to provide air flow to the air hole 11a. The solenoid valve is arranged between the compressor and the air hole 11a, so as to control the on and off of the air flow.

[0084] The positioning part includes a positioning element 21, a first push element 22 and a first detection device. Figure 1 As shown, the positioning element 21 includes two positioning plates perpendicular to the first direction A and spaced apart along the second direction B. The top edges of the two positioning plates are connected to the bottom edge of the support plate 11. The first push element 22 is fixedly arranged on the second conveyor belt 53 of the second conveyor device.

[0085] The second conveying device includes two second conveyor belts 53, both of which extend along the first direction A and pass through the gap between the two positioning plates. A plurality of first push-blocking elements 22 are fixedly arranged on each second conveyor belt 53 at equal intervals along the first direction A, and each first push-blocking element 22 on the second conveyor belt 53 is aligned with a first push-blocking element 22 on another second conveyor belt 53 in the first direction A. The height of the positioning plate is configured to be greater than the height of the first push-blocking element 22, so that the first push-blocking element 22 passes through the middle of the two positioning plates during the conveying process of the second conveyor belt 53 without interfering with the support plate 11.

[0086] The positioning element 21 includes a positioning surface 21A, which is the rear surface of the positioning element 21. The first push element 22 includes a first push surface 22A, which is the front surface of the first push element 22. The first push surface 22A and the positioning surface 21A are arranged opposite to each other along the first direction A, and are both perpendicular to the first direction A.

[0087] The positioning portion is configured to place the packaging box 10 in the lid-closed position. The lid-closed position is located on the side of the support plate 11 that forms an obtuse angle with the horizontal plane along the first direction A, that is, on the rear side of the positioning element 21. When the packaging box 10 is in the lid-closed position, the first side surface (i.e., the front surface) of the box body 102 of the packaging box 10 is in contact with the positioning surface 21A, and the second side surface (i.e., the rear surface) of the box body 102 is in contact with the first push surface 22A.

[0088] like Figure 2 As shown, the second conveyor belt 53 conveys the packaging box 10 forward along the first direction A. The first push-blocking element 22 fixed on the second conveyor belt 53 pushes the packaging box 10 to move forward following the second conveyor belt 53 until the first side surface of the box body 102 of the packaging box 10 is in contact with the positioning surface 21A of the positioning element 21, so that the packaging box 10 is accurately positioned at the lid-closing position.

[0089] The first detection device is configured to detect whether the packaging box 10 is in the lid-closing position. The first detection device can be set as a magnetic proximity sensor, and the first push-blocking element 22 can be set as a magnetic material. When the first push-blocking element 22 reaches the position where the packaging box 10 is in the lid-closing position, the first detection device sends a signal to indicate that the packaging box 10 has reached the lid-closing position. The air blowing part 1 may include a controller and a solenoid valve. When the first detection device detects that the packaging box 10 is in the lid-closing position, the first detection device sends a signal to the controller of the air blowing part 1. After receiving the signal, the controller controls the solenoid valve to open, so that the air hole 11a on the support plate 11 sprays airflow.

[0090] The pressing part 3 includes a pressing head 31, a first driving device 32 and a first fixed bracket 33. The pressing head 31 includes a pressing surface 31A, which is a surface of the pressing head 31 opposite to the top surface of the box cover 101 in the closed state. The pressing surface 31A can be matched with the top surface shape of the box cover 101 in the closed state to increase the pressing force, and is also conducive to making the pressing head 31 apply a vertical pressing force to the box cover 101, and avoid the packaging box 10 from shifting in the front-back direction during the pressing process. The first fixed bracket 33 is arranged across the first conveyor belt 43 along the first direction A, and the left side of the top of the first fixed bracket 33 has a bracket head extending to the left. The first driving device 32 is fixedly connected to the bracket head in the vertical direction, and the first driving device 32 is a cylinder with a piston rod that reciprocates in the vertical direction. The end of the piston rod is fixedly connected to the pressing head 31 to drive the pressing head 31 to move up and down. In this embodiment, the pressing head 31 is a plate having a bottom surface having the same size and shape as the top surface of the box cover 101 of the packaging box 10 .

[0091] The pressing part 3 is arranged on the left side of the blowing part 1, and the packaging box 10 is moved from the cover closing position to the bottom of the pressing head 31 by the moving part. The moving part includes: a plurality of second pushing elements 41, a second driving device 42, two first conveyor belts 43, two rotating wheels 44, a third pushing element 45 and a second detection device.

[0092] The second push element 41 includes a second push surface 41A. Figure 1 In the illustrated embodiment, the second push-block element 41 is configured as a Z-shaped plate arranged perpendicular to the second direction B, and the second push-block surface 41A is the left side of the second push-block element 41. The second driving device 42 includes a second fixed bracket 421 and a slider 422, the second fixed bracket 421 includes a slide groove extending along the second direction B, and the slide groove is arranged at the top of the second fixed bracket 421. The slider 422 is arranged in the slide groove and reciprocates left and right in the slide groove. The front end of the second push-block element 41 is fixedly connected to the front side of the slider 422 through the connecting plate 411. The slider 422 moves left and right, thereby driving the second push-block element 41 to move left and right. When the second push-block element 41 is located at the rightmost position, the second push-block surface 41A is in contact with the right side of the box body 102 of the packaging box 10 located at the closed cover position.

[0093] The second driving device 42 cooperates with the timer of the blowing part 1. When the timer detects that the ejection time of the airflow is 0.5 seconds, the second driving device 42 drives the second pushing element 41 to move leftward.

[0094] In the present embodiment, two first conveyor belts 43 are arranged side by side on the left side of the cover-closing position of the packaging box 10 along the first direction A, and are arranged at intervals from the cover-closing position along the second direction B. The rotating wheel 44 rotates counterclockwise, thereby driving the first conveyor belt 44 to transport the packaging box 10 to the left. Between the first conveyor belt 43 and the second conveyor belt 53 at the cover-closing position, the moving part also includes three guide plates. The three guide plates all extend along the second direction B, and the three guide plates are arranged along the first direction A. The middle guide plate extends from the left side of the second conveyor belt 53 to the top of the rotating wheel 44, so that the packaging box 10 can be moved to the transmission position above the rotating wheel 44. The length of the two guide plates on both sides along the second direction B is less than the middle guide plate, which is conducive to not interfering with the moving path of the third push-blocking element 45 fixed on the first conveyor belt 43.

[0095] The third push-block element 45 is configured as a protrusion that is perpendicular to the conveying surface of the first conveyor belt 43 and fixedly arranged on the conveying surface of the first conveyor belt 43. In this embodiment, the arrangement of the third push-block element 45 on the first conveyor belt 43 is the same as the arrangement of the first push-block element 22 on the second conveyor belt 53, which will not be repeated here.

[0096] The second detection device is configured to detect whether the packaging box 10 is located at the transmission position. The second detection device can be set to a magnetic proximity sensor, and the third push-block element 45 is set to a magnetic material. When the third push-block element 45 reaches the position where the packaging box 10 is located at the transmission position, the second detection device sends a signal to indicate that the packaging box 10 has arrived at the transmission position. The first conveying device may include a motor and a controller, and the rotating shaft of the motor is connected to the rotating shaft of the rotating wheel 44 and is connected to the controller signal. The controller is configured to receive the detection signal of the second detection device and control the start and stop of the motor. When the second detection device detects that the packaging box 10 is located at the transmission position, the second detection device sends a signal to the controller, and the controller controls the rotating shaft of the motor to rotate counterclockwise, so that the third push-block element 45 located below the guide plate rotates around the rotating shaft of the rotating wheel 44 to the position where the third push-block surface 45A of the third push-block element 45 is attached to the third side of the box body 102. The first conveyor belt 43 continues to transmit to the left, and the third push-block element 45 pushes the packaging box 10 to move from the transmission position to the bottom of the pressure head 31 of the pressing part 3.

[0097] The packaging production line includes the above-mentioned lid closing device and the filling device. The filling device is configured to fill the small cigarette boxes into the box body 102 before the packaging box 10 is located at the lid closing position. In this embodiment, the filling device is arranged on one side of the lid closing device along the first direction A. The second conveyor belt 53 connects the filling position where the filling device is located and the lid closing position to convey the packaging box 10 along the first direction A to the lid closing position.

[0098] According to the following Figure 2Describe in detail the working method of the cover closing device:

[0099] First, the second conveyor belt 53 moves forward along the first direction A, and the first push-blocking element 22 pushes the packaging box 10 with the box cover 101 in the open state forward until the front side of the box body 102 of the packaging box 10 is in contact with the positioning element 21;

[0100] The first detection device detects that the packaging box 10 is in the closed position, and the controller controls the solenoid valve to open, and the air flow is ejected toward the box cover 101 through the air holes 11a on the support plate 11, and the box cover 101 is buckled onto the box body 102 under force;

[0101] Subsequently, the second driving device 42 drives the second pushing element 41 to move leftward, thereby pushing the packaging box 10 to move leftward, so that the packaging box 10 completes the turning movement;

[0102] The second detection device detects that the packaging box 10 moves to the conveying position, and the controller controls the motor to start, so that the rotating wheel 44 rotates counterclockwise, and the third pushing element 45 rotates from the bottom of the guide plate to fit the packaging box 10, and continues to move to the left, so as to push the packaging box 10 from the conveying position to the bottom of the pressing head 31 of the pressing part;

[0103] Subsequently, the first driving device 32 drives the pressing head 31 to move downward, so that the box cover 101 is pressed tightly against the box body 102 .

[0104] It should be noted that after the first packaging box 10 reaches the conveying position, the second driving device drives 42 the second pushing element 41 to move rightward to the rightmost end, and at the same time, the second packaging box 10 moves toward the cover closing device via the second conveyor belt 53; and when the first packaging box 10 reaches below the pressure head 31, the second packaging box 10 is located at the cover closing position. This arrangement is conducive to the cover closing device to close the two packaging boxes 10 at the same time, thereby improving the working efficiency.

[0105] In addition, in summary, the cover closing device changes the conveying direction of the packaging box 10 through the moving part, thereby forming a production path with a corner. Figure 1 and Figure 2 As shown, the blowing section 1 is arranged at the corner of the production path, which is beneficial to reducing the space occupancy rate.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present disclosure can still be modified or some technical features can be replaced by equivalents, which should all be included in the scope of the technical solution for protection requested by the present disclosure.

Claims

1. A cover closing device, used for switching a cover (101) of a packaging box (10) from an open state to a closed state in which the cover (101) is fastened to a box body (102) of the packaging box (10), characterized in that: include: An air blowing section (1) comprising a support plate (11), the support plate (11) being arranged at an angle to a horizontal plane, the support plate (11) comprising at least one air hole (11a); and a positioning portion configured to position the packaging box (10) in a cover-closed position, the cover-closed position being located on a side of the support plate (11) along a first direction (A) that forms an obtuse angle with a horizontal plane; Wherein, the blowing part (1) is configured to eject airflow through the at least one air hole (11a) so that the box cover (101) of the packaging box (10) in the closed position, which is in contact with the support plate (11), switches from the open state to the closed state.

2. The cover closing device according to claim 1, characterized in that: The positioning portion comprises: a positioning element (21), located below the support plate (11) of the blowing portion (1), the positioning element (21) comprising a positioning surface (21A); and A first push-blocking element (22) is configured to be movable along the first direction (A), the first push-blocking element (22) comprising a first push-blocking surface (22A), the first push-blocking surface (22A) being arranged opposite to a positioning surface (21A) of the positioning element (21) along the first direction (A); Wherein, when the packaging box (10) is located in the closed lid position, the positioning surface (21A) is configured to fit with a first side surface of the box body (102) close to the blowing portion (1); and the first push surface (22A) is configured to fit with a second side surface of the box body (102) opposite to the first side surface along the first direction (A).

3. The cover closing device according to claim 1, characterized in that: The positioning portion comprises a first detection device, which is configured to detect whether the packaging box (10) is located in the lid-closed position. When the first detection device detects that the packaging box (10) is located in the lid-closed position, the blowing portion (1) is configured to spray the airflow.

4. The cover closing device according to claim 1, characterized in that: It also includes a pressing portion (3), wherein the pressing portion (3) includes: A pressure head (31); and The first driving device (32) is drivingly connected to the pressing head (31) and is configured to drive the pressing head (31) to move so that the pressing head (31) applies pressure to the box cover (101) in the closed state.

5. The cover closing device according to claim 4, characterized in that: The pressing portion (3) is located on one side of the blowing portion (1) along a second direction (B) that forms an angle with the first direction (A), and the cover closing device also includes a moving portion, at least part of which is configured to be movable along the second direction (B) so that the packaging box (10) can be moved along the second direction (B) from the cover closing position to below the pressure head (31) of the pressing portion (3).

6. The cover closing device according to claim 5, characterized in that: The mobile unit comprises: a second pushing element (41), comprising a second pushing surface (41A), the second pushing surface (41A) being arranged on a side of the second pushing element (41) close to the pressing portion (3) along the second direction (B), the second pushing surface (41A) being configured to contact a third side surface of the box body (102) along the second direction (B) away from the pressing portion (3); and The second driving device (42) is drivingly connected to the second pushing element (41), and is configured to drive the second pushing element (41) to move along the second direction (B) so as to move the packaging box (10) along the second direction (B) from the closed cover position toward the bottom of the pressure head (31) of the pressing portion (3).

7. The cover closing device according to claim 6, characterized in that: The second driving device (42) is configured to drive the second pushing element (41) to move along the second direction (B) so that the packaging box (10) moves from the cover-closing position to a transfer position between the blowing portion (1) and the pressing portion (3); The moving part further comprises a first conveying device, wherein the first conveying device comprises a first conveying part, and the first conveying part is configured to drive the packaging box (10) to move from the conveying position to below the pressing head (31) of the pressing part (3).

8. The cover closing device according to claim 7, characterized in that: The first conveying part comprises a first conveying belt (43), and the conveying direction of the first conveying belt (43) is arranged to extend along the second direction (B) from a side close to the blowing part (1) to a side away from the blowing part; The first conveying device also includes a third pushing element (45), which is fixedly arranged on the first conveyor belt (43), and the third pushing element (45) includes a third pushing surface (45A), wherein the third pushing element (45) is configured as follows: when the packaging box (10) is located at the conveying position, the third pushing element (45) moves along the first conveyor belt (43) to the third pushing surface (45A) to contact the third side surface of the box body (102) to push the packaging box (10) to move onto the first conveyor belt (43) and move from the conveying position to below the pressure head (31) along the conveying direction of the first conveyor belt (43).

9. The cover closing device according to claim 7, characterized in that: The first conveying device also includes a second detection device, which is configured to detect whether the packaging box (10) is located at the conveying position. When the second detection device detects that the packaging box (10) is located at the conveying position, the first conveying part is configured to move the packaging box (10) along the second direction (B) toward the side close to the clamping part (3) so as to move from the conveying position to below the pressure head (31) of the clamping part (3).

10. The cover closing device according to claim 1, characterized in that: The support plate (11) comprises a plurality of air holes (11a), and the plurality of air holes (11a) are distributed in a rectangular array on the support plate (11).

11. The cover closing device according to any one of claims 1 to 10, characterized in that: The cover closing device further comprises a second conveying device, wherein the second conveying device is configured to convey the packaging box (10) with the box cover (101) in the open state to the cover closing position, wherein: The second conveying device comprises a second conveyor belt (53), wherein the conveying direction of the second conveyor belt (53) is arranged to extend along the first direction (A) from a side away from the blowing part (1) to a side close to the blowing part (1); The positioning portion comprises a first pushing element (22), and the first pushing element (22) is fixedly arranged on the second conveyor belt (53); When the packaging box (10) is located on the side of the first pushing element (22) along the first direction (A) close to the blowing part (1), the second conveyor belt (53) drives the first pushing element (22) to move along the conveying direction of the second conveyor belt (53) to drive the packaging box (10) to move to the closed cover position.

12. A packaging production line, characterized in that: include: The cover closing device according to any one of claims 1 to 11; and The filling device is configured to fill materials into the box body (102) before the packaging box (10) is located in the lid closing position.

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