System for forming and bonding packaging box

Abstract

The system comprises a conveying line, a forming mechanism, a bottom support, a bonding mechanism and a first driving component, the bottom support is arranged on the conveying line, the conveying line is located below the forming mechanism, the forming mechanism deforms a planar packaging box into a three-dimensional packaging box with an opening in the top, and the bonding mechanism is located below the forming mechanism. The forming mechanism pushes the three-dimensional packaging box into the bottom support, the bonding mechanism is located above the conveying line, the bonding mechanism can conduct hot melting bonding on the end of the three-dimensional packaging box, and the first driving component can drive the bonding mechanism to move up and down. According to the system, the formed three-dimensional packaging box in the bottom support is automatically conveyed to the bonding mechanism through the conveying line, the bonding mechanism automatically conducts hot melting bonding on the end portion of the three-dimensional packaging box, and assembly line work is achieved through the working procedures of forming and bonding of the plane-shaped packaging box; and operators do not need to transfer and hold a hot melting device by hands for bonding, so that the production efficiency of the packaging box can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of transporting planar packaging boxes, and in particular to a system for forming and bonding packaging boxes. Background Art

[0002] Paper packaging boxes are used in various industries. Before being formed, a paper packaging box is an unfolded cardboard (referred to as a "flat packaging box") with overlapping surfaces at the four corners. The forming equipment can transform the flat packaging box from a flat shape into a three-dimensional packaging box with an open top. Then, the overlapping surfaces at both ends of the three-dimensional packaging box need to be glued together with the side walls of the three-dimensional packaging box.

[0003] The existing processes of forming a flat packaging box and gluing the two ends of a three-dimensional packaging box are independent of each other. That is, after the molding equipment deforms the flat packaging box from a flat shape into a three-dimensional packaging box with an open top, the operator needs to transfer the three-dimensional packaging box to the conveyor line, and the conveyor line transports the three-dimensional packaging box to the gluing process. In the gluing process, the operator holds a hot melt device and performs hot melt bonding on the two ends of the three-dimensional packaging box respectively. The existing process of forming and gluing the flat packaging box results in low production efficiency of the packaging box. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a system for forming and bonding packaging boxes.

[0005] According to one aspect of the present invention, a system for forming and bonding packaging boxes is provided, comprising a conveyor line for conveying formed three-dimensional packaging boxes to a bonding station, and further comprising: A forming mechanism for transforming a flat packaging box into a three-dimensional packaging box with an open top; A bottom tray for accommodating a three-dimensional packaging box, the bottom tray being arranged on a conveyor line located below a forming mechanism, and the forming mechanism pushing the three-dimensional packaging box into the bottom tray; A bonding mechanism, located above the conveyor line, capable of hot-melt bonding the ends of the three-dimensional packaging boxes; and The first driving component can drive the bonding mechanism to move up and down.

[0006] In the system of the present invention, the forming mechanism can deform a flat packaging box into a three-dimensional packaging box with an open top and push the three-dimensional packaging box to the bottom tray on the conveyor line, and the conveyor line conveys the bottom tray carrying the three-dimensional packaging box to the bottom of the bonding mechanism, and the first driving component drives the bonding mechanism to move downward, and when the bonding mechanism moves downward to the three-dimensional packaging box in the bottom tray, the bonding mechanism performs hot-melt bonding on the end of the three-dimensional packaging box. After the hot-melt bonding of the three-dimensional packaging box is completed, the first driving component drives the bonding mechanism to move upward to prepare for the next hot-melt bonding of the three-dimensional packaging box. In the system of the present invention, the conveyor line automatically conveys the formed three-dimensional packaging box in the bottom tray to the bonding mechanism, and the bonding mechanism automatically performs hot-melt bonding on the end of the three-dimensional packaging box. The operation process of forming and bonding the flat packaging box realizes assembly line operation, and does not require operators to transport and hold hot-melt devices for bonding, which can greatly improve the production efficiency of packaging boxes.

[0007] Furthermore, the bonding mechanism includes a first heating block, a second heating block and a driving device, which can drive the first heating block and the second heating block to move toward or in opposite directions. The first heating block is used to hot-melt bond one end of the three-dimensional packaging box, and the second heating block is used to hot-melt bond the other end of the three-dimensional packaging box.

[0008] Therefore, when the bonding mechanism moves downward to the three-dimensional packaging box in the base, under the action of the driving device, the first heating block and the second heating block move in opposite directions. The first heating block presses one end of the three-dimensional packaging box against the side wall of one end of the base and simultaneously performs hot-melt bonding on the end of the three-dimensional packaging box. The second heating block presses the other end of the three-dimensional packaging box against the side wall of the other end of the base and simultaneously performs hot-melt bonding on the end of the three-dimensional packaging box. After the hot-melt bonding of the three-dimensional packaging box is completed, under the action of the driving device, the first heating block and the second heating block move toward each other so that the bonding mechanism can be removed upward from the three-dimensional packaging box.

[0009] Furthermore, the driving device includes a cylinder, a driving block, a first connecting member, a second connecting member, a first push plate, a second push plate, a first supporting plate, a second supporting plate and a mounting seat. The cylinder can drive the driving block to move up and down. One end of the first connecting member is hinged to one end of the driving block, and the other end of the first connecting member is hinged to the first push plate. The first push plate is arranged on the top of the first supporting plate, and the first supporting plate is slid on the mounting seat. The first heating block is arranged on the side of the first supporting plate. One end of the second connecting member is hinged to the other end of the driving block, and the other end of the second connecting member is hinged to the second push plate. The second push plate is arranged on the top of the second supporting plate, and the second supporting plate is slid on the mounting seat. The second heating block is arranged on the side of the second supporting plate.

[0010] The second supporting plate drives the second heating block to move synchronously in the direction away from the first heating block, and the second supporting plate drives the second heating block to move synchronously in the direction away from the first heating block, so that the first heating block and the second heating block move in opposite directions, and the first heating block presses one end of the three-dimensional packaging box against the side wall of one end of the bottom support and hot-melt-bonds the end of the three-dimensional packaging box at the same time, and the second heating block presses the other end of the three-dimensional packaging box against the side wall of the other end of the bottom support and hot-melt-bonds the three-dimensional packaging box at the same time. The end of the three-dimensional packaging box is hot-melt bonded. After the hot-melt bonding of the three-dimensional packaging box is completed, the cylinder drives the driving block to move upward. Since the two ends of the first connecting member are hinged to the driving block and the first push plate respectively, and the two ends of the second connecting member are hinged to the driving block and the second push plate respectively, and the first supporting plate and the second supporting plate are both slidably arranged on the mounting seat, the first supporting plate will slide on the mounting seat in the direction close to the second supporting plate, and the first supporting plate drives the first heating block to move synchronously in the direction close to the second heating block, and the second supporting plate will slide on the mounting seat in the direction close to the first supporting plate, and the second supporting plate drives the second heating block to move synchronously in the direction close to the first heating block, realizing the relative movement of the first heating block and the second heating block, so that the bonding mechanism can be removed upward from the three-dimensional packaging box. The structure of the driving device is simple and can realize the relative or reverse movement of the first heating block and the second heating block.

[0011] Furthermore, it also includes four slide rails, a cylinder is provided on the top of the mounting seat, a first driving component drives the mounting seat to move up and down, a groove is provided at the bottom of the mounting seat, a first slide groove is provided on two opposite side walls of the groove, a second slide groove is provided on both sides of the first bearing plate, and a third slide groove is provided on both sides of the second bearing plate. The first slide rail is connected between a first slide groove and a second slide groove, and the second slide rail is connected between another first slide groove and another second slide groove. The third slide rail is clamped between a first slide groove and a third slide groove, and the fourth slide rail is clamped between another first slide groove and another third slide groove.

[0012] Therefore, the slide rail can not only enable the first supporting plate and the side wall of the groove to slide back and forth smoothly, but also prevent the first supporting plate from falling from the bottom of the mounting seat. The slide rail can not only enable the second supporting plate and the side wall of the groove to slide back and forth smoothly, but also prevent the second supporting plate from falling from the bottom of the mounting seat.

[0013] Furthermore, it also includes a first buffer spring and a second buffer spring, the first buffer spring is arranged between the first heating block and the side of the first supporting plate, and the second buffer spring is arranged between the second heating block and the side of the second supporting plate.

[0014] Therefore, the first buffer spring can ensure that the first heating block will not make hard contact with one end of the three-dimensional packaging box, preventing the first heating block from crushing the three-dimensional packaging box. The second buffer spring can ensure that the second heating block will not make hard contact with the other end of the three-dimensional packaging box, preventing the second heating block from crushing the three-dimensional packaging box.

[0015] Furthermore, it also includes two clamping mechanisms, with clamping grooves provided on both sides of the bottom bracket respectively. The clamping mechanism includes a second driving component, a driving rod, a load-bearing shaft and a clamping portion. One end of the driving rod is fixed on the load-bearing shaft, and the other end of the driving rod is provided on the driving shaft of the second driving component. The second driving component can drive the load-bearing shaft to rotate through the driving rod, and one end of the clamping portion is fixed on the load-bearing shaft. The two bearing shafts in the two clamping mechanisms are respectively arranged on both sides of the conveyor line, and the other ends of the two clamping parts in the two clamping mechanisms can be respectively pressed into the two clamping grooves on both sides of the base or disengaged from the clamping grooves.

[0016] When the first and second clamping mechanisms are engaged, the two clamping mechanisms are engaged with the clamping grooves on both sides of the base, thereby clamping the base, preventing the first heating block and the second heating block from respectively pressing the ends of the three-dimensional packaging box against the side walls of the base, thereby preventing the base from moving in a direction perpendicular to the conveying direction of the conveyor line due to the uneven pressing force, thereby affecting the quality of hot melt bonding. After the hot melt bonding is completed, the second driving component drives the driving rod to swing in the opposite direction with the bearing shaft as the swing center, the driving rod drives the bearing shaft to rotate in the opposite direction, and the bearing shaft drives the clamping part to swing in the opposite direction, and the clamping part disengages from the clamping groove, and the clamping parts of the two clamping mechanisms disengage from the clamping grooves respectively, thereby loosening the base.

[0017] Furthermore, the forming mechanism includes a push plate, a third driving component, a bearing plate, two first side plates and two second side plates, The carrier plate is provided with a square slot; The first side plate is arranged on the bearing plate, the bottom of the first side plate extends into the square slot, and the two first side plates are arranged opposite to each other. The second side plate is arranged on the bearing plate, the bottom of the second side plate extends into the square slot, and the two second side plates are arranged opposite to each other. The two first side panels and the two second side panels together enclose a forming cavity for the packaging box to pass through. The carrier plate is located above the conveyor line. The third driving component can drive the push plate to move up and down, and the push plate can push the flat packaging box placed above the forming cavity from the top of the forming cavity to the bottom bracket on the conveyor line to form a three-dimensional packaging box with an open top.

[0018] Therefore, the space enclosed by the two first side panels and the two second side panels can drive the flat packaging box to be deformed from a flat shape into a three-dimensional packaging box with an open top. The flat packaging box is placed above the forming cavity, and the third driving component drives the push plate to move downward. The push plate pushes the flat packaging box from the top to the bottom of the forming cavity to form a three-dimensional packaging box with an open top, and pushes the three-dimensional packaging box with an open top into the bottom support on the conveyor line below the carrying plate, and the conveyor line transports the bottom support carrying the three-dimensional packaging box to the bottom of the bonding mechanism.

[0019] Furthermore, a first arc-shaped guide edge in an outward-turned shape is provided on the top of the first side plate, and a second arc-shaped guide edge in an outward-turned shape is provided on the top of the second side plate.

[0020] Therefore, since the first curved guide edge on the first side panel and the second curved guide edge on the second side panel are both outward-turned, in the process of the push plate pushing the flat packaging box from the top to the bottom of the forming cavity, the first curved guide edge and the second curved guide edge can guide the side of the packaging box to smoothly change from horizontal to vertical, without scratching the side of the flat packaging box, thereby ensuring the molding quality of the packaging box.

[0021] Furthermore, it also includes four auxiliary support plates, which are arranged on the bearing plate, and the tops of the auxiliary support plates are provided with third arc-shaped guide edges in an outward-turned shape. The two auxiliary support plates are arranged opposite to each other and are respectively located at the two ends of a first side plate. The other two auxiliary support plates are arranged opposite to each other and are respectively located at two ends of the other first side plate.

[0022] Therefore, the four auxiliary support plates can support the four overlapping surfaces of the planar packaging box. Since the third curved guide edge is outward-turned, in the process of the push plate pushing the planar packaging box from the top to the bottom of the forming cavity, the third curved guide edge can guide the four overlapping surfaces of the planar packaging box to smoothly change from horizontal to vertical, without scratching the overlapping surfaces of the planar packaging box, thereby ensuring the molding quality of the packaging box.

[0023] Furthermore, there are five forming mechanisms, which are arranged in parallel; there are multiple bases, which are arranged at equal intervals along the conveying direction of the conveyor line; and there are five bonding mechanisms, which are arranged in parallel.

[0024] Therefore, the five groups of forming mechanisms can simultaneously deform five flat packaging boxes into three-dimensional packaging boxes with an open top and push the three-dimensional packaging boxes into the bottom tray on the conveyor line. The conveyor line will transport the bottom tray carrying the five three-dimensional packaging boxes to the bottom of the five groups of bonding mechanisms. The five groups of bonding mechanisms can simultaneously perform hot-melt bonding on the ends of the five three-dimensional packaging boxes, thereby improving the production efficiency of the packaging boxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a system for forming and bonding packaging boxes according to the present invention; Figure 2 for Figure 1 The structural diagram of the system shown is a schematic diagram of the molding mechanism hiding the push plate and the third driving component; Figure 3 for Figure 1 A schematic structural diagram of the bonding structure and the first driving component in the system shown; Figure 4 for Figure 3 A schematic structural diagram of the bonding structure shown in another perspective; Figure 5 for Figure 4 Schematic diagram of the split structure of the bonding structure shown; Figure 6 for Figure 5 A schematic structural diagram of the bonding structure shown in another perspective; Figure 7 for Figure 1 A schematic diagram of the structure of the clamping mechanism and the base support in the system shown; Figure 8 for Figure 1 A schematic structural diagram of the clamping mechanism and the base support in the system shown in FIG. Figure 9 for Figure 1 The usage state diagram of the system shown; Figure 10 for Figure 9 A structural diagram of the system from another perspective is shown; Figure 11 for Figure 9 A schematic structural diagram of a flat packaging box in the system shown; Figure 12 for Figure 11 The schematic diagram of the structure of a flat packaging box processed into a three-dimensional packaging box with an open top is shown. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, unless otherwise specified, "multiple" means two or more; it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or a communication between the internal parts of two elements.

[0028] See Figures 1 to 8 A system for forming and bonding packaging boxes includes a conveyor line 1, a forming mechanism, a base 3, a bonding mechanism 4, a first driving component 5, a slide rail 6, a first buffer spring 7, a second buffer spring 8, a clamping mechanism, an auxiliary support plate 10, a bracket 100, a controller 200 and a mounting frame 300.

[0029] See Figure 1 The conveyor line 1 can convey the three-dimensional packaging box formed by the forming mechanism to the bonding mechanism 4. After the bonding mechanism 4 completes the hot melt bonding of the three-dimensional packaging box, the conveyor line 1 can convey the three-dimensional packaging box downstream, and the robot will take away the three-dimensional packaging box that has completed hot melt bonding on the conveyor line 1.

[0030] The base 3 is fixed on the conveyor line 1 . The base 3 is provided with a concave cavity with an open top. The base 3 is used to accommodate a three-dimensional packaging box.

[0031] The forming mechanism can transform a flat packaging box into a three-dimensional packaging box with an open top. Figure 1 and Figure 2 The forming mechanism includes a push plate 21 , a third driving component 22 , a carrying plate 23 , two first side plates 24 , two second side plates 25 and four auxiliary support plates 10 .

[0032] See Figure 1 and Figure 2 A square slot 231 is formed on the carrier plate 23, the first side plate 24 is mounted on the carrier plate 23, the bottom of the first side plate 24 extends into the square slot 231, the two first side plates 24 are arranged opposite to each other, the second side plate 25 is mounted on the carrier plate 23, the bottom of the second side plate 25 extends into the square slot 231, the two second side plates 25 are arranged opposite to each other, the two first side plates 24 and the two second side plates 25 jointly enclose a forming cavity for the packaging box to pass through, the top and bottom of the forming cavity are both open, and the third drive The moving part 22 is installed on the side plate of the bracket 100. The third driving part 22 can be an electric cylinder, a linear motor or a pneumatic cylinder. The push plate 21 is fixed on the driving rod of the third driving part 22. The third driving part 22 can drive the push plate 21 to move up and down. The push plate 21 is located above the forming cavity. Under the driving action of the third driving part 22, the push plate 21 can push the flat packaging box placed above the forming cavity from the top of the forming cavity to the bottom of the forming cavity and push it into the bottom bracket 3 on the conveyor line 1 to form a top-shaped package. The three-dimensional packaging box with an opening is a three-dimensional packaging box with an opening; the space formed by the two first side panels 24 and the two second side panels 25 is a molding cavity, which can drive the planar packaging box to be deformed from a planar shape into a three-dimensional packaging box with an opening at the top. The planar packaging box is placed above the molding cavity, and the third driving component 22 drives the push plate 21 to move downward. The push plate 21 pushes the planar packaging box from the top to the bottom of the molding cavity from top to bottom to form a three-dimensional packaging box with an opening at the top, and pushes the three-dimensional packaging box with an opening at the top to the bottom support 3 on the conveyor line 1 under the carrying plate 23. The conveyor line 1 can convey the bottom support 3 carrying the three-dimensional packaging box to the bottom of the bonding mechanism 4; according to needs, the spacing between the two first side panels 24 is adjustable, and the spacing between the two second side panels 25 is adjustable, so as to adjust the size of the molding cavity to accommodate planar packaging boxes of more sizes. For example, the first side panel 24 and the second side panel 25 can be formed with oblong adjustment holes, and the bolts are passed through the oblong adjustment holes on the first side panel 24 and the second side panel 25 and then rotated on the carrying plate 23.

[0033] See Figure 2 The top of the first side panel 24 is formed with a first curved guide edge 241 in an outward-turned shape, and the top of the second side panel 25 is formed with a second curved guide edge 251 in an outward-turned shape. Since the first curved guide edge 241 on the first side panel 24 and the second curved guide edge 251 on the second side panel 25 are both outward-turned, in the process of the pushing plate 21 pushing the planar packaging box from the top to the bottom of the molding cavity, the first curved guide edge 241 and the second curved guide edge 251 can guide the side of the packaging box to smoothly change from horizontal to vertical, without scratching the side of the planar packaging box, thereby ensuring the molding quality of the packaging box.

[0034] See Figure 2The auxiliary support plate 10 is installed on the carrying plate 23. The top of the auxiliary support plate 10 is formed with a third arc-shaped guide edge 101 in an outward-turned shape. There are four auxiliary support plates 10. Two auxiliary support plates 10 are arranged oppositely and are respectively located at the two ends of one first side plate 24. The other two auxiliary support plates 10 are arranged oppositely and are respectively located at the two ends of another first side plate 24. The four auxiliary support plates 10 can support the four overlapping surfaces of the flat packaging box. Since the third arc-shaped guide edge 101 is in an outward-turned shape, when the push plate 21 is In the process of pushing the planar packaging box from the top to the bottom of the forming cavity, the third arc-shaped guide edge 101 can guide the four overlapping surfaces of the planar packaging box to smoothly change from horizontal to vertical, without scratching the overlapping surfaces of the planar packaging box, thereby ensuring the molding quality of the packaging box; according to needs, the spacing between the two relatively arranged auxiliary support plates 10 can be adjusted to accommodate planar packaging boxes of more sizes, such as an oblong adjustment hole can be formed on the auxiliary support plate 10, and the bolt is passed through the oblong adjustment hole on the auxiliary support plate 10 and then rotated onto the supporting plate 23.

[0035] See Figure 1 and Figure 2 A plurality of supports 232 are installed at the bottom of the carrying plate 23 , and the supports 232 are placed on the platform of the bracket 100 . The conveyor line 1 passes through the bottom of the carrying plate 23 , and the carrying plate 23 is located above the conveyor line 1 and the bottom support 3 .

[0036] The bonding mechanism 4 is located above the conveyor line 1. The first driving component 5 can drive the bonding mechanism 4 to move up and down. The bonding mechanism 4 can perform hot-melt bonding on the ends of the three-dimensional packaging box in the bottom bracket 3. Figure 1 、 Figures 3 to 6 The bonding mechanism 4 includes a first heating block 41, a second heating block 42 and a driving device. The driving device can drive the first heating block 41 and the second heating block 42 to move toward or in the opposite direction. The first heating block 41 can perform hot-melt bonding on one end of the three-dimensional packaging box, and the second heating block 42 can perform hot-melt bonding on the other end of the three-dimensional packaging box. When the first driving component 5 drives the bonding mechanism 4 to move downward to the three-dimensional packaging box in the bottom bracket 3, under the action of the driving device, the first heating block 41 and the second heating block 42 Moving in the opposite direction, the first heating block 41 presses one end of the three-dimensional packaging box against the side wall of one end of the base 3 and simultaneously performs hot-melt bonding on the end of the three-dimensional packaging box, and the second heating block 42 presses the other end of the three-dimensional packaging box against the side wall of the other end of the base 3 and simultaneously performs hot-melt bonding on the end of the three-dimensional packaging box. After the hot-melt bonding of the three-dimensional packaging box is completed, under the action of the driving device, the first heating block 41 and the second heating block 42 move toward each other so that the bonding mechanism can be removed upward from the three-dimensional packaging box.

[0037] See Figure 1 and Figure 3 The first driving component 5 is mounted on the mounting frame 300 , and the mounting frame 300 can be mounted on the platform of the bracket 100 . The first driving component 5 can be an electric cylinder, a linear motor or a pneumatic cylinder.

[0038] See Figures 3 to 6The driving device includes a cylinder 43, a driving block 44, a first connecting member 45, a second connecting member 46, a first push plate 47, a second push plate 48, a first supporting plate 49, a second supporting plate 410 and a mounting seat 411. The cylinder 43 is mounted on the top of the mounting seat 411. The side of the mounting seat 411 is formed with a connecting frame 4113. The connecting frame 4113 is fixed to the driving rod of the first driving component 5. The first driving component 5 can drive the mounting seat 411 to move up and down. The mounting seat 411 is hollow. A cavity for accommodating the driving block 44, the first connecting member 45, the second connecting member 46, the first push plate 47 and the second push plate 48 is formed in the mounting seat 411. The top of the driving block 44 is fixed on the piston rod of the cylinder 43. The driving block 44 is located at the mounting seat In the seat 411, the cylinder 43 can drive the driving block 44 to move up and down, one end of the first connecting member 45 is hinged to one end of the driving block 44, the other end of the first connecting member 45 is hinged to the first push plate 47, the first push plate 47 is fixed to the top of the first bearing plate 49, the first bearing plate 49 is slidably set on the mounting seat 411, the first heating block 41 is fixed to the side of the first bearing plate 49, one end of the second connecting member 46 is hinged to the other end of the driving block 44, the other end of the second connecting member 46 is hinged to the second push plate 48, the second push plate 48 is fixed to the top of the second bearing plate 410, the second bearing plate 410 is slidably set on the mounting seat 411, and the second heating block 42 is fixed to the side of the second bearing plate 410;When the cylinder 43 drives the driving block 44 to move downward, since the two ends of the first connecting member 45 are respectively hinged to the driving block 44 and the first push plate 47, the two ends of the second connecting member 46 are respectively hinged to the driving block 44 and the second push plate 48, and the first supporting plate 49 and the second supporting plate 410 are both slidably arranged on the mounting seat 411, the first supporting plate 49 will slide on the mounting seat 411 in the direction away from the second supporting plate 410, and the first supporting plate 49 will drive the first heating block 41 to move synchronously in the direction away from the second heating block 42, and the second supporting plate 49 will move synchronously in the direction away from the second heating block 42. The second carrier plate 410 will slide on the mounting seat 411 in the direction away from the first carrier plate 49, and the second carrier plate 410 drives the second heating block 42 to move synchronously in the direction away from the first heating block 41, so that the first heating block 41 and the second heating block 42 move in opposite directions. The first heating block 41 presses one end of the three-dimensional packaging box against the side wall of one end of the bottom bracket 3 and hot-melt-bonds the end of the three-dimensional packaging box at the same time, and the second heating block 42 presses the other end of the three-dimensional packaging box against the side wall of the other end of the bottom bracket 3 and hot-melt-bonds the three-dimensional packaging box at the same time. The end of the packaging box is hot-melt bonded. After the hot-melt bonding of the three-dimensional packaging box is completed, the cylinder 43 drives the driving block 44 to move upward. Since the two ends of the first connecting member 45 are respectively hinged to the driving block 44 and the first push plate 47, and the two ends of the second connecting member 46 are respectively hinged to the driving block 44 and the second push plate 48, and the first supporting plate 49 and the second supporting plate 410 are both slidably arranged on the mounting seat 411, the first supporting plate 49 will slide on the mounting seat 411 in the direction close to the second supporting plate 410. The first heating block 41 is driven to move synchronously toward the second heating block 42. The second carrier plate 410 slides on the mounting base 411 in a direction toward the first carrier plate 49. The second carrier plate 410 drives the second heating block 42 to move synchronously toward the first heating block 41, achieving the opposite movement of the first and second heating blocks 41, 42, so that the bonding mechanism 4 can be upwardly removed from the three-dimensional packaging box. The simple structure of the driving device can achieve the opposite or opposite movement of the first and second heating blocks 41, 42.

[0039] The first heating block 41 and the second heating block 42 can both be made of a material with good thermal conductivity, such as copper. Wires are installed on the first heating block 41 and the second heating block 42. When the wires are energized, the first heating block 41 and the second heating block 42 generate heat.

[0040] See Figures 4 to 6, the first buffer spring 7 is installed between the first heating block 41 and the side of the first supporting plate 49, and the second buffer spring 8 is installed between the second heating block 42 and the side of the second supporting plate 410. Specifically, the first heating block 41 is fixed to the side of the first supporting plate 49 by four first fixing bolts 400. The number of the first buffer springs 7 is four. The four first buffer springs 7 are respectively sleeved on the four first fixing bolts 400 and the first buffer spring 7 is located between the first heating block 41 and the side of the first supporting plate 49. A first accommodating cavity for accommodating the first buffer spring 7 can be formed on the first heating block 41. The second heating block 42 is fixed by four second fixing bolts 500. Fixed on the side of the second supporting plate 410, the number of the second buffer springs 8 is four, the four second buffer springs 8 are respectively sleeved on the four second fixing bolts 500 and the second buffer springs 8 are located between the second heating block 42 and the side of the second supporting plate 410, and the second heating block 42 can be formed with a second accommodating cavity for accommodating the second buffer spring 8. The first buffer spring 7 can ensure that the first heating block 41 will not make hard contact with one end of the three-dimensional packaging box, preventing the first heating block 41 from crushing the three-dimensional packaging box. The second buffer spring 8 can ensure that the second heating block 42 will not make hard contact with the other end of the three-dimensional packaging box, preventing the second heating block 42 from crushing the three-dimensional packaging box.

[0041] See Figure 5 and Figure 6 , a groove 4111 is formed at the bottom of the mounting seat 411, and a first slide groove 4112 is formed on two opposite side walls of the groove 4111. The first slide groove 4112 on each side wall of the groove 4111 can be continuous or disconnected. Second slide grooves 491 are formed on both sides of the upper part of the first supporting plate 49, and third slide grooves 4101 are formed on both sides of the upper part of the second supporting plate 410. There are four slide rails 6, and both sides of the slide rails 6 are convex. The first slide rail 6 is clamped between a first slide groove 4112 and a second slide groove 491, and the second slide rail 6 is clamped on the other first slide Between the groove 4112 and another second slide groove 491, the third slide rail 6 is clamped between a first slide groove 4112 and a third slide groove 4101, and the fourth slide rail 6 is clamped between another first slide groove 4112 and another third slide groove 4101. The slide rail 6 can not only realize the smooth reciprocating sliding of the first bearing plate 49 and the side wall of the groove 4111, but also prevent the first bearing plate 49 from falling from the bottom of the mounting seat 411. The slide rail 6 can not only realize the smooth reciprocating sliding of the second bearing plate 410 and the side wall of the groove 4111, but also prevent the second bearing plate 410 from falling from the bottom of the mounting seat 411.

[0042] See Figure 7 and Figure 8, arc-shaped clamping grooves 31 are respectively formed on both sides of the bottom bracket 3, and the clamping mechanism includes a second driving component 91, a driving rod 92, a load-bearing shaft 93 and a clamping portion 94. One end of the driving rod 92 is fixed to the load-bearing shaft 93, and the load-bearing shaft 93 is installed on the side of the conveyor line 1 through multiple fixing blocks 931. The other end of the driving rod 92 is fixed to the driving shaft of the second driving component 91. The second driving component 91 can drive the load-bearing shaft 93 to rotate through the driving rod 92. One end of the clamping portion 94 is fixed to the load-bearing shaft 93, and a clamping portion 94 can be installed on the free end of the clamping portion 94. The second driving component 91 can be an electric cylinder, a linear motor or an air cylinder. The second driving component 91 can be installed on a frame. There are two clamping mechanisms. The two bearing shafts 93 in the two clamping mechanisms are respectively installed on both sides of the conveyor line 1 through multiple fixing blocks 931. The clamping columns 941 on the two clamping parts 94 in the two clamping mechanisms can be respectively pressed against the two arc-shaped clamping grooves 31 on both sides of the base 3 or be disengaged from the clamping grooves 31; when the conveyor line 1 transports the base 3 carrying the three-dimensional packaging box to the bonding mechanism 4, the second driving component 91 drives the driving rod 92 to swing with the bearing shaft 93 as the swing center, the driving rod 92 drives the bearing shaft 93 to rotate, and the bearing shaft 93 drives the clamping part 94 to swing, and the clamping column 941 on the clamping part 94 presses against the clamping groove 31 on the bottom bracket 3. The clamping columns 941 on the clamping parts 94 of the two clamping mechanisms can respectively press against the clamping grooves 31 on both sides of the bottom bracket 3, thereby clamping the bottom bracket 3 to prevent the first heating block 41 and the second heating block 42 from respectively pressing the ends of the three-dimensional packaging box against the side walls of the bottom bracket 3. The uneven tightening force causes the base support 3 to move in a direction perpendicular to the conveying direction of the conveyor line 1, thereby affecting the quality of hot melt bonding. After the hot melt bonding is completed, the second driving component 91 drives the driving rod 92 to swing in the opposite direction with the load-bearing shaft 93 as the swing center, and the driving rod 92 drives the load-bearing shaft 93 to rotate in the opposite direction, and the load-bearing shaft 93 drives the clamping part 94 to swing in the opposite direction, and the clamping column 941 on the clamping part 94 disengages from the clamping groove 31, and the clamping columns 941 on the clamping parts 94 of the two clamping mechanisms disengage from the two clamping grooves 31 on both sides of the base support 3 respectively, thereby loosening the base support 3.

[0043] See Figures 1 to 3In this embodiment, the number of forming mechanisms is five groups, and the five groups of forming mechanisms are arranged in parallel. The number of bottom brackets 3 is multiple, and the multiple bottom brackets 3 are arranged at equal intervals along the conveying direction of the conveyor line 1. The number of bottom brackets 3 is at least five, and preferably the bottom brackets 3 cover the entire conveyor line 1. The number of bonding mechanisms 4 is five groups, and the five groups of bonding mechanisms 4 are arranged in parallel. The spacing between two adjacent bottom brackets 3 is adapted to the spacing between two adjacent push plates 21, and the spacing between two adjacent bottom brackets 3 is adapted to the spacing between the two first heating blocks 41 in the two adjacent bonding mechanisms 4. The bearings in each clamping mechanism are adapted to the spacing between the two adjacent push plates 21. There are five clamping parts 94 on the carrying shaft 93, and the distance between two adjacent clamping parts 94 is adapted to the distance between two adjacent bases 3. The five groups of forming mechanisms can simultaneously deform five planar packaging boxes into three-dimensional packaging boxes with open tops and push the three-dimensional packaging boxes into the five bases 3 on the conveyor line 1. The conveyor line 1 will convey the five bases 3 carrying the five three-dimensional packaging boxes to the bottom of the five groups of bonding mechanisms 4. The five groups of bonding mechanisms 4 can simultaneously perform hot-melt bonding on the ends of the five three-dimensional packaging boxes, thereby improving the production efficiency of the packaging boxes.

[0044] See Figure 1 and Figure 3 The controller 200 is installed on the mounting frame 300. The controller 200 can be a microcontroller or a single-chip microcomputer. The controller 200 is connected to the third drive component 22, the second drive component 91, the first drive component 5, the cylinder 43, and the drive mechanism of the conveyor line 1 through a wiring harness. The controller 200 can control the third drive component 22, the second drive component 91, the first drive component 5, the cylinder 43, and the drive mechanism of the conveyor line 1 to work together.

[0045] Figure 11 This is the structure of the flat packaging box 600 in this embodiment. Figure 12 for Figure 11 The flat packaging box 600 shown is processed into a three-dimensional packaging box 700 with an open top.

[0046] See Figure 11 The planar packaging box 600 is planar before molding. There are four overlapping surfaces 601 at the four corners of the planar packaging box 600, and the back of the overlapping surfaces 601 is coated with hot melt adhesive.

[0047] See Figure 12 The top of the three-dimensional packaging box 700 processed from the flat packaging box 600 is open, and the overlapping surface 601 needs to be bonded to the side wall of the three-dimensional packaging box 700.

[0048] See Figures 1 to 12The system of the present invention places five planar packaging boxes 600 flat on top of the forming cavity jointly enclosed by the two first side panels 24 and the two second side panels 25. The four auxiliary support plates 10 support the four overlapping surfaces 601 of the planar packaging boxes 600. The five third driving components 22 simultaneously drive the five push plates 21 to move downward. The push plates 21 push the five planar packaging boxes 600 from the top to the bottom of the forming cavity to form a three-dimensional packaging box 700 with an open top, and push the three-dimensional packaging box 700 with an open top to the five bottom brackets 3 on the conveyor line 1 under the carrying plate 23. The conveyor line 1 conveys the five bottom brackets 3 carrying the three-dimensional packaging boxes 700 to the bottom of the five bonding mechanisms 4. When the conveyor line 1 conveys the five bases 3 carrying the three-dimensional packaging boxes 700 to the bottom of the five bonding mechanisms 4, the clamping columns 941 on the clamping parts 94 of the two clamping mechanisms clamp the base 3, and the first driving component 5 drives the bonding mechanism 4 to move downward. When the first heating block 41 and the second heating block 42 of the bonding mechanism 4 move downward to the three-dimensional packaging box 700 in the base 3, the cylinder 43 drives the driving block 44 to move downward, and the first heating block 41 and the second heating block 42 move in opposite directions. The first heating block 41 presses one end of the three-dimensional packaging box 700 against the side wall of one end of the base 3 and simultaneously performs hot-melt bonding on the end of the three-dimensional packaging box 700, so as to bond the two ends of the three-dimensional packaging box 700 together. The first overlapping surface 601 is bonded to one side wall of the three-dimensional packaging box 700, and at the same time, the second heating block 42 presses the other end of the three-dimensional packaging box 700 against the side wall of the other end of the base 3 and simultaneously performs hot-melt bonding on the end of the three-dimensional packaging box 700, and bonds the other two overlapping surfaces 601 on the three-dimensional packaging box 700 to the other side wall of the three-dimensional packaging box 700. After the hot-melt bonding of the three-dimensional packaging box 700 is completed, the cylinder 43 drives the driving block 44 to move upward, and the first heating block 41 and the second heating block 42 move toward each other, and then the first driving component 5 drives the bonding mechanism 4 to move upward, and the bonding mechanism 4 is disengaged from the three-dimensional packaging box 700 upward, preparing for the next three-dimensional packaging box In preparation for hot melt bonding, the clamping column 941 on the clamping part 94 of the two clamping mechanisms loosens the base 3, and the conveyor line 1 transports the base 3 carrying the three-dimensional packaging box 700 that has been hot-melt bonded downstream, and the robot takes away the three-dimensional packaging box 700 that has been hot-melt bonded on the conveyor line 1. In the system of the present invention, the conveyor line 1 automatically transports the formed three-dimensional packaging box 700 in the base 3 to the bonding mechanism 4, and the bonding mechanism 4 automatically performs hot melt bonding on the end of the three-dimensional packaging box 700, and realizes the assembly line operation of the forming and bonding operation of the flat packaging box 600. There is no need for operators to transport and hold hot melt devices for bonding, which can greatly improve the production efficiency of the packaging boxes.

[0049] The above description is only some embodiments of the present invention, which is intended to illustrate the technical means of the present invention and is not intended to limit the technical scope of the present invention. Those skilled in the art can make obvious improvements to the present invention in combination with existing common knowledge, which all fall within the scope of protection of the present invention.

Claims

1. A system for forming and bonding packaging boxes, comprising a conveyor line for conveying formed three-dimensional packaging boxes to a bonding station, characterized in that: Also includes: A forming mechanism for transforming a flat packaging box into a three-dimensional packaging box with an open top; A bottom support for accommodating a three-dimensional packaging box, the bottom support being provided on a conveyor line located below a forming mechanism, and the forming mechanism pushing the three-dimensional packaging box into the bottom support; The bonding mechanism is located above the conveyor line and can perform hot-melt bonding on the ends of the three-dimensional packaging box. The bonding mechanism includes a first heating block, a second heating block and a driving device, wherein the driving device can drive the first heating block and the second heating block to move toward or in opposite directions, the first heating block is used to perform hot-melt bonding on one end of the three-dimensional packaging box, and the second heating block is used to perform hot-melt bonding on the other end of the three-dimensional packaging box; and A first driving component is configured to drive the bonding mechanism to move up and down.

2. The system according to claim 1, wherein: The driving device includes a cylinder, a driving block, a first connecting member, a second connecting member, a first push plate, a second push plate, a first supporting plate, a second supporting plate and a mounting seat. The cylinder can drive the driving block to move up and down. One end of the first connecting member is hinged to one end of the driving block, and the other end of the first connecting member is hinged to the first push plate. The first push plate is arranged on the top of the first supporting plate, and the first supporting plate is slid on the mounting seat. The first heating block is arranged on the side of the first supporting plate, one end of the second connecting member is hinged to the other end of the driving block, and the other end of the second connecting member is hinged to the second push plate. The second push plate is arranged on the top of the second supporting plate, and the second supporting plate is slid on the mounting seat. The second heating block is arranged on the side of the second supporting plate.

3. The system according to claim 2, characterized in that It also includes four slide rails, the cylinder is arranged on the top of the mounting seat, the first driving component drives the mounting seat to move up and down, the bottom of the mounting seat is provided with a groove, the two opposite side walls of the groove are provided with a first slide groove, the two sides of the first bearing plate are provided with a second slide groove, and the two sides of the second bearing plate are provided with a third slide groove. The first slide rail is connected between a first slide groove and a second slide groove, and the second slide rail is connected between another first slide groove and another second slide groove. The third slide rail is clamped between a first slide groove and a third slide groove, and the fourth slide rail is clamped between another first slide groove and another third slide groove.

4. The system according to claim 2, wherein: The device further includes a first buffer spring and a second buffer spring, wherein the first buffer spring is disposed between the first heating block and the side of the first supporting plate, and the second buffer spring is disposed between the second heating block and the side of the second supporting plate.

5. The system according to claim 1, wherein: It also includes two clamping mechanisms, with clamping grooves on both sides of the base respectively. The clamping mechanism includes a second driving component, a driving rod, a load-bearing shaft and a clamping portion. One end of the driving rod is fixed on the load-bearing shaft, and the other end of the driving rod is arranged on the driving shaft of the second driving component. The second driving component can drive the load-bearing shaft to rotate through the driving rod, and one end of the clamping portion is fixed on the load-bearing shaft. The two bearing shafts in the two clamping mechanisms are respectively arranged on both sides of the conveyor line, and the other ends of the two clamping parts in the two clamping mechanisms can be respectively pressed into the two clamping grooves on both sides of the base or disengaged from the clamping grooves.

6. The system according to claim 1, wherein: The forming mechanism includes a push plate, a third driving component, a bearing plate, two first side plates and two second side plates. The carrying plate is provided with a square slot; The first side plate is arranged on the bearing plate, the bottom of the first side plate extends into the square slot, and the two first side plates are arranged opposite to each other. The second side plate is arranged on the bearing plate, the bottom of the second side plate extends into the square slot, and the two second side plates are arranged opposite to each other. The two first side panels and the two second side panels together enclose a forming cavity for the packaging box to pass through. The carrier plate is located above the conveyor line. The third driving component can drive the push plate to move up and down, and the push plate can push the flat packaging box placed above the forming cavity from the top of the forming cavity to the bottom bracket on the conveyor line to form a three-dimensional packaging box with an open top.

7. The system according to claim 6, characterized in that A first arc-shaped guide edge in an outward-turned shape is provided on the top of the first side plate, and a second arc-shaped guide edge in an outward-turned shape is provided on the top of the second side plate.

8. The system according to claim 6, wherein: The forming mechanism further comprises four auxiliary support plates, each of which is arranged on the carrier plate, and the top of each auxiliary support plate is provided with a third arc-shaped guide edge in an outward-turned shape. The two auxiliary support plates are arranged opposite to each other and are respectively located at the two ends of a first side plate. The other two auxiliary support plates are arranged opposite to each other and are respectively located at two ends of the other first side plate.

9. The system according to claim 1, wherein: There are five groups of forming mechanisms, which are arranged in parallel. There are multiple bases, which are arranged at equal intervals along the conveying direction of the conveyor line. There are five groups of bonding mechanisms, which are arranged in parallel.

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