A side-seal box apparatus

Abstract

The application relates to a side-sealing box equipment, which comprises a box supporting table, an upper side of which is used for supporting a paper box; a box positioning device, which is used for positioning the paper box on a predetermined sealing position of the box supporting table; a cover closing device, which is used for closing two box covers of the paper box; and a tape sticking device, which comprises a plurality of tape sticking heads, the plurality of tape sticking heads are respectively distributed at two wide sides and one long side of the paper box, each tape sticking head comprises a tape discharging head and a side pressing tape block, the tape discharging head and the side pressing tape block are movably arranged, the movable arrangement enables the tape discharging head and the side pressing tape block to have vertical movement freedom and horizontal movement freedom which is perpendicular to the direction of the corresponding paper box edge, a front end of a tape is exposed on the tape discharging head, the tape discharging head is used for abutting against a large box cover of the paper box at the position of the front end of the tape, and the side pressing tape block is located behind the tape sticking head, and is used for pressing the part of the tape falling to the side of the paper box after the tape is cut off after being stuck on the large box cover. The application has the effect of making the sealing of the full-cover box more reliable.

Description

Technical Field

[0001] This application relates to the field of carton packaging, and more particularly to a side-sealing carton device. Background Technology

[0002] Carton sealing is a crucial process in logistics, warehousing, and production packaging. Cartons can be categorized into full-coverage cartons and half-coverage cartons based on the type of lid. Full-coverage cartons, also known as double-lid overlapping cartons or top-and-bottom overlapping cartons, have two overlapping lids. When sealing these cartons, the tape needs to be applied to the edges of the cartons; this requires a side-sealing method.

[0003] In the existing technology, the side sealing of a full-cover carton is achieved using a full-cover sealing machine. The specific working principle is as follows: The carton is placed on a roller conveyor and conveyed forward. During the forward conveying process, the tape is first applied to the end of the large carton cover away from the crease. At this time, half of the tape width is applied to the carton. Then, the tape is folded over by a guiding structure, so that the other half of the tape width is applied to the side of the carton adjacent to the carton cover. Thus, a tape is applied to the carton cover and two adjacent surfaces along the edge of the large carton cover, thereby achieving the side sealing of the full-cover carton.

[0004] The problem with the above method is that, for the same size, a full-coverage box will hold heavier items than a half-coverage box, and the difference in load-bearing capacity between full-coverage and half-coverage boxes increases with size. Furthermore, for full-coverage boxes carrying large items, insufficient tape width can lead to an insecure seal, and the fact that half of the tape is folded before being applied to the box also results in loose adhesion, further weakening the seal and reducing the load-bearing capacity of the full-coverage box. Summary of the Invention

[0005] To make the sealing of full-coverage boxes more secure, this application provides a side-sealing box device.

[0006] The side-sealing box device provided in this application adopts the following technical solution:

[0007] A side-sealing box device, comprising:

[0008] The upper side of the box support is used to support cardboard boxes.

[0009] A carton positioning device is used to position the carton at a predetermined sealing position on the carton receiving platform;

[0010] A lid-closing device used to close the two lids of a carton;

[0011] The adhesive applicator includes multiple adhesive applicators distributed along two wide sides and one long side of a carton. Each adhesive applicator includes a tape delivery head and a side pressing block. Both the tape delivery head and the side pressing block are movable, allowing them to have vertical freedom of movement and horizontal freedom of movement perpendicular to the corresponding edge of the carton. The front end of the tape is exposed on the tape delivery head, which is used to abut against the large lid of the carton. After the tape is applied to the large lid and cut, it first falls to the side of the carton. Then, the vertically moving side pressing block abuts against the side of the carton to press the tape firmly, ensuring that the tape adheres tightly to the side of the carton.

[0012] By adopting the above technical solution, during the sealing process, the tape head first abuts against the large lid of the carton, then the tape head moves along a direction perpendicular to its own edge until it leaves the carton at a predetermined distance. The tape head then cuts the tape, causing it to fall onto the side of the carton. Next, the side pressure block abuts against the side of the carton, and finally, the side pressure block moves downward to press the tape firmly against the side of the carton.

[0013] This design has two advantages. First, multiple tapes are used to attach the lid and the carton to both the wide and long sides. The tape is distributed not only on the side of the lid furthest from the crease, thus increasing the sealing strength of the full-coverage box. Second, the tape is applied along its length to the sides of the lid and the carton. This means the application area is not limited by the side length of the lid furthest from the crease, allowing for greater sealing strength through a larger application area.

[0014] Preferably, the adhesive applicator further includes an adhesive applicator gantry, an adhesive applicator lifting frame, and an adhesive applicator following frame. The adhesive applicator gantry is fixedly installed. The adhesive applicator lifting frame is vertically slidably installed on the adhesive applicator gantry and is located above the carton receiving platform. The adhesive applicator following frame is horizontally slidably installed on the adhesive applicator lifting frame, with the sliding direction parallel to the long side of the carton. The adhesive applicator head further includes an adhesive head frame. There are three adhesive heads, one of which is installed on one adhesive applicator following frame. The three adhesive applicator following frames move independently. Each adhesive head frame has a vertical degree of freedom and a degree of freedom parallel to the wide side of the carton relative to the adhesive applicator following frame. The tape dispensing head and the side pressure tape block are both installed on the adhesive head frame. The side pressure tape block has a vertical degree of freedom of movement relative to the adhesive head frame.

[0015] By adopting the above technical solution, firstly, among the three adhesive application heads, two adhesive application heads are respectively matched with the two wide sides of the large box lid, and one adhesive application head is matched with the long side of the large box lid where there is no crease. At the same time, the tape head of the long side achieves adhesive application at different positions on the long side through the movement of the adhesive application and box frame. The tape head of the wide side achieves adhesive application at different positions on the wide side through the relative horizontal movement between the adhesive head frame and the adhesive application and box frame. Therefore, fewer adhesive application heads are used to complete the side sealing of the full-cover box, so that the equipment structure is compact and can be adapted to smaller full-cover boxes.

[0016] Secondly, since the number of adhesive applicators is relatively small, an adhesive applicator lifting frame can be installed. The adhesive applicator lifting frame provides a portion of the vertical movement, while the tape output head and the side pressure block each provide the remaining portion of the vertical movement. The lifting can be achieved through a drawer-like telescopic structure, which allows for a more compact structure to accommodate cartons with greater height variations and to accommodate adhesive application processes with longer vertical dimensions. This results in better carton sealing with a smaller device.

[0017] Thirdly, since both the tape delivery head and the side pressure block are mounted on the tape holder, the side pressure block will also press against the large box lid during the tape application process, ensuring that the edge of the large box lid is tightly adhered to the small box lid. Just after the side pressure block leaves the edge of the large box lid, it moves downwards first, allowing some tape to adhere to the side of the carton. Then, the tape delivery head cuts the tape, and the side pressure block continues to move downwards, ensuring the remaining tape is completely adhered to the side of the carton. This tape application method results in a tighter adhesion at the corner between the edge of the large box lid and the side of the carton, as well as at the sides of the carton, thus more easily improving the sealing strength of the full-lid box.

[0018] Preferably, the three adhesive applicator heads are divided into two wide-side heads and one long-side head. The adhesive applicator frame that the wide-side head engages with is connected to the adhesive applicator lifting frame via a lead screw linear module. The adhesive applicator frame that the long-side head engages with is connected to the adhesive applicator lifting frame via a belt linear module. The adhesive head frame achieves horizontal movement with the adhesive applicator frame via the lead screw linear module, and the adhesive head frame achieves vertical movement with the adhesive applicator frame via a cylinder, enabling the adhesive head frame to perform flexible vertical movement. The adhesive applicator lifting frame is equipped with a dual-output reducer, which is located between the lead screw linear modules connected to the adhesive applicator frame. The output end of the dual-output reducer is connected to the adhesive applicator gantry via a rack and pinion transmission.

[0019] By adopting the above technical solution, firstly, for the wide-side head, the movement of the adhesive applicator and the box frame is achieved using a lead screw linear module to stably apply the tape to the large box lid. Movement along the wide side of the carton is also achieved using a lead screw linear module, ensuring the adhesive applicator head accurately stops at different predetermined positions along the narrower width of the carton. Secondly, for the long-side head, the movement of the adhesive applicator and the box frame is achieved using a belt linear module, allowing the adhesive applicator head to move quickly and relatively accurately to different predetermined positions along the wider width of the carton. Movement along the width of the carton is achieved using a lead screw linear module to stably apply the tape to the large box lid. In summary, while achieving stability and accuracy in the adhesive applicator movement, the space of the adhesive applicator lifting frame can be fully utilized to install the motion power source related to the adhesive applicator and the box frame, maintaining a simple equipment structure.

[0020] Secondly, the vertical movement between the adhesive applicator and the carton frame is achieved using a cylinder. By utilizing the characteristics of the cylinder, the tape head is pressed against the large carton cover with a certain pressure, so that the tape is tightly adhered to the large carton cover. At the same time, the air circuit design allows the piston rod of the cylinder to make a gentle extension movement to adapt to the size error of the carton. Thus, dynamic precision adhesive application is achieved through a simple structure and simple control.

[0021] Third, the lifting motion of the adhesive application lifting frame is achieved by using a dual-output reducer in conjunction with a gear and rack transmission. This method results in a lifting frame with strong load-bearing capacity, a simple drive structure, and simple drive control.

[0022] Preferably, the tape output head includes a winding pulley, a winding arm, a tape-applying roller, a tape-clamping arm, and a tape-cutting knife; the winding pulley is rotatably mounted on the tape head frame and is used to hold the tape; one end of the winding arm is hinged to the lower side of the tape head frame, and the hinge allows the end of the winding arm away from the tape head frame to swing up and down, with the tape being wound on the side of the winding arm away from the side pressure block; the tape-applying roller is rotatably mounted on the end of the winding arm away from the tape head frame, with its rotation axis parallel to the hinge axis of the winding arm; the tape-clamping arm is movably mounted on the side of the winding arm away from the side pressure block, and the movability allows the tape-clamping arm to move in a direction closer to or away from the winding arm, and also allows the tape-clamping arm to move in a direction closer to or away from the tape-applying roller; the tape-cutting knife is slidably mounted on the side of the winding arm away from the side pressure block, and the tape-cutting knife cooperates with the end of the winding arm near the tape-applying roller to achieve cutting.

[0023] By adopting the above technical solution, before adhesive application, the front end of the tape is located at the end of the wrapping arm near the application roller. The clamping arm closes onto the wrapping arm to hold the tape, and works in conjunction with a damped reel to ensure the tape is tensioned and mounted on the tape exit head. Before adhesive application, the clamping arm closes onto the wrapping arm and moves towards the application roller to pull the front end of the tape towards the application roller until the front end of the tape reaches the application roller. Then, the wrapping arm rotates away from the adhesive head holder, so that the application roller and the front end of the tape abut against the large box cover in a direction from the back of adhesive application to the front of adhesive application. During adhesive application, the clamping arm moves away from the wrapping arm to release the tape, allowing the tape to be fed out smoothly. Before the tape cutter cuts the tape, the clamping arm moves away from the application roller, and then closes onto the wrapping arm to hold the tape, providing a stable environment for subsequent tape cutting.

[0024] In summary, by simplifying the tape application head structure through a non-powered unwinding method, the tape tip can be applied more precisely and tightly to the large box lid, thereby improving the sealing strength of the full-coverage box.

[0025] Preferably, the wrapping arm is connected to a swing arm cylinder, a clamping cylinder, a pulling cylinder, and a cutting cylinder; the piston rod of the swing arm cylinder is hinged to the wrapping arm, and the housing of the swing arm cylinder is hinged to the rubber head bracket; the clamping cylinder is a slide cylinder, and the output slide of the clamping cylinder is connected to the clamping arm, causing the clamping arm to move closer to or away from the wrapping arm; the housing of the pulling cylinder is fixedly mounted on the wrapping arm, and the piston rod of the pulling cylinder is connected to the housing of the clamping cylinder. The clamping arm moves closer to or further away from the tape-applying roller; the housing of the cutter cylinder is fixedly mounted on the wrapping arm, and the piston rod of the cutter cylinder is connected to the cutter; along the hinge axis of the wrapping arm, the swing arm cylinder, the clamping cylinder, the pulling cylinder, and the cutter cylinder are all located on the same side of the wrapping arm, and the clamping cylinder and the pulling cylinder are both located on the end face of the wrapping arm; the swing arm cylinder and the cutter cylinder are both located on the side of the wrapping arm closer to the side pressure block;

[0026] A side pressure drive is provided between the side pressure belt block and the rubber head frame. The side pressure drive is a straight belt module. The side pressure drive is divided into a power part, a transmission part, and an output part. The power part, the transmission part, and the output part are distributed in a U-shaped bend with the opening facing downward. The output part is connected to the side pressure belt block. Along the hinge axis of the belt arm, the side pressure drive is located on the side away from the cutter cylinder. The side pressure drive and the cutter cylinder are arranged to overlap front and back.

[0027] By adopting the above technical solution, firstly, by setting up the wrapping arm cylinder, clamping cylinder, pulling cylinder, and cutting cylinder, the required movements of the wrapping arm, clamping arm, and cutting blade can be achieved, while the structure of the tape head can be simplified by selecting the drive source. Secondly, since the clamping cylinder is a slide cylinder, due to the slide rail structure, when the clamping arm pulls the tape, the clamping arm will not move relative to the piston rod of the pulling cylinder along the length direction of the wrapping arm. This allows the clamping arm to accurately stop at the predetermined position of the wrapping arm, thus precisely controlling the length of the tape front end exposed outside the clamping arm. This maintains a simple structure while allowing the tape front end to adhere more smoothly and tightly to the large box lid. Thirdly, the special positioning of the swing arm cylinder, clamping cylinder, pulling cylinder, and cutting cylinder ensures that the side of the wrapping arm away from the adhesive head frame has fewer components. This shortens the length of the wrapping arm, reducing the difficulty of maintaining tape tension, and also leaves room for workers to maintain the tape. Fourthly, the structural layout of the side pressure drive unit reduces the vertical span of the adhesive head, further shortening the wrapping arm and reducing the difficulty of maintaining tape tension. For wide-edge heads, it also reduces the length along the wide side of the carton, keeping the equipment compact. The relative position between the side pressure drive unit and the cutting cylinder reduces the span of the adhesive head in the adhesive application direction, allowing for smaller sizes of the compatible full-coverage cartons.

[0028] Preferably, the receiving platform is a non-powered roller conveyor; the carton fixing device includes a width positioning frame, a width driving component, and a length conveyor; the width positioning frame is horizontally slidably disposed on the receiving platform, with the sliding direction parallel to the roller axis of the receiving platform, and two width positioning frames are distributed along their own sliding direction; the width driving component is disposed on the receiving platform, and the width driving component is connected to the two width positioning frames, so that the two width positioning frames are close to or far from each other; the length conveyor is a belt conveyor, one length conveyor is disposed on one width positioning frame, and the side of the two length conveyors that are close to each other is used to abut the carton.

[0029] By adopting the above technical solutions, firstly, the cooperation between the receiving platform and the longitudinal conveyor allows for more stable and faster transport of large-sized cartons, reducing the likelihood of slippage. This ensures more precise stopping positions for the cartons, enabling rapid centering along their length. Secondly, the coordinated operation of the width positioning frame and the longitudinal conveyor allows for rapid centering of the carton's width through the movement of the width positioning frame. Furthermore, the two longitudinal conveyors can apply opposite conveying forces to achieve rotational centering, resulting in more comprehensive centering. Additionally, the opposite conveying forces applied by the two longitudinal conveyors allow the carton to rotate, thus accommodating cartons that require tape application on more than three sides.

[0030] Preferably, the receiving platform has a longitudinal window on its front side, the longitudinal window connecting the top and bottom of the roller of the receiving platform; the box fixing device further includes a blocking frame, a stop block, a blocking control component, and a longitudinal adjusting component; the lower end of the blocking frame is located below the roller of the receiving platform, and the upper end of the blocking frame passes through the longitudinal window; the stop block is slidably disposed on the upper end of the blocking frame, the sliding direction of the stop block is perpendicular to the roller axis of the receiving platform, one side of the stop block is used to abut against the front surface of the carton, and the opposite side of the stop block is used to abut against the blocking frame. The stop block and the blocking frame are connected by a buffer, so that the stop block is subjected to a force away from the blocking frame as it approaches the blocking frame; the blocking control component is located below the roller of the receiving platform and is connected to the blocking frame, and is used to allow the stop block to enter or leave the area above the roller of the receiving platform; the longitudinal adjustment component is located below the roller of the receiving platform and is connected to the blocking control component, and is used to allow the blocking frame to move in a direction perpendicular to the roller axis of the receiving platform when the stop block is above the roller of the receiving platform.

[0031] By adopting the above technical solutions, firstly, the cooperation of the longitudinal adjustment component and the blocking control component allows the stop block to be positioned at different locations on the front side of the receiving platform to abut cartons of different lengths, thus adapting to the alignment of cartons of different sizes along their length. Secondly, when the two longitudinal conveyors apply forces in opposite directions to rotate the cartons, the longitudinal adjustment component allows the stop block to push the cartons, balancing the force difference between the two longitudinal conveyors and preventing displacement of the cartons along their length during rotational correction. Thirdly, the buffered connection between the stop block and the blocking frame allows the repulsive force between the stop block and the blocking frame to gradually stop the cartons when they contact a stationary stop block, resulting in a more precise stopping position. When the cartons contact a moving stop block, the force applied by the stop block is gentler, allowing for a more accurate balance of the force difference between the two longitudinal conveyors during carton rotational alignment, thus making the alignment process of the cartons smoother and simpler.

[0032] Preferably, the belt of the longitudinal conveyor is an anti-slip belt; the drive part of the longitudinal conveyor is a motor and a transmission chain; the frame of the longitudinal conveyor includes a conveyor panel, transfer rollers, a connecting frame back plate, and guide rollers; the conveyor panel is fixedly installed, located on the side of two longitudinal conveyors that are close to each other, and multiple conveyor panels are distributed along the conveying direction of the longitudinal conveyor, with each conveyor panel abutting against the inner side of the belt in the longitudinal conveyor; the transfer rollers are rotatably installed, and are distributed along the conveying direction of the longitudinal conveyor. The transfer roller abuts against the inner side of the belt of the longitudinal conveyor; the connecting frame back plate is fixedly installed, located on the side of the two longitudinal conveyors that are far apart from each other, and on the outer side of the belt of the longitudinal conveyor. The side of the connecting frame back plate that is far away from the conveyor panel is connected to the wide positioning frame; the guide roller is rotatably installed, located on the side of the two longitudinal conveyors that are far apart from each other, and on both ends of the connecting frame back plate along the conveying direction of the longitudinal conveyor. The guide roller abuts against the outer side of the belt of the longitudinal conveyor.

[0033] By adopting the above technical solutions, firstly, by using anti-slip belts and a motor plus transmission chain for the drive unit, sufficient power can be provided to stably transport cartons, thereby enabling centering adjustment for large-sized, high-load cartons. Secondly, since the two longitudinal conveyors need to apply both longitudinal conveying force and width-direction centering clamping force, a conveyor panel is configured to prevent belt collapse, allowing for simultaneous centering in both longitudinal and width directions. Furthermore, because the conveyor panel reduces the smoothness of belt movement, transfer rollers are also provided. Thirdly, since the width positioning frame requires the longitudinal conveyors to apply width-direction centering clamping force, a connecting frame back plate allows the width positioning frame to more fully transfer the centering clamping force to the longitudinal conveyors. Additionally, because the edges of the connecting frame back plate can obstruct belt transmission, guide rollers are also provided.

[0034] Preferably, the lid-closing device includes a primary lid-folding rod, a lid-folding drive component, and a secondary lid-closing cylinder. The primary lid-folding rod is horizontally slidably mounted on the adhesive-applying lifting frame, with the sliding direction perpendicular to the movement direction of the adhesive-applying and box-mounting frame. The primary lid-folding rod is used to abut against the large lid of the carton. The lid-folding drive component is mounted on the adhesive-applying lifting frame and connected to the primary lid-folding rod. The lid-folding drive component causes the primary lid-folding rod to push the large lid to flip. The secondary lid-closing cylinder is mounted on the adhesive-applying lifting frame and is inclined. The secondary lid-closing cylinder is located on the side where the crease of the large lid is located. The secondary lid-closing cylinder is used to push the large lid to close onto the small lid after the primary lid-folding rod flips the large lid by a predetermined angle.

[0035] By adopting the above technical solution, before the adhesive application, the initial folding rod is moved by the folding drive component to rotate the large box lid to a predetermined angle. Then, the piston rod of the secondary closing cylinder extends, and the adhesive application lifting frame descends so that the piston rod of the secondary closing cylinder abuts against the large box lid until the large box lid closes onto the small box lid, thus achieving a complete closing action. Furthermore, when applying the first tape to the wide edge of the large box lid, the piston rod of the secondary closing cylinder remains against the large box lid, ensuring the carton is sealed tightly when the large and small box lids are closed, thereby improving the sealing strength of the fully covered carton. Additionally, both the initial folding rod and the secondary closing cylinder are positioned opposite the long side, thus maintaining a compact structure for the equipment.

[0036] Preferably, the folding drive component includes a folding fixed seat, a folding moving rail, a folding slide, and a folding screw; the folding fixed seat is fixedly mounted on the adhesive-applying lifting frame; the folding moving rail is slidably connected to the folding fixed seat, with the sliding direction parallel to the length direction of the folding moving rail, a portion of the folding moving rail being located within the folding fixed seat and another portion outside the folding fixed seat; the folding slide is fixedly connected to the folding moving rail and is connected to the initial folding rod; the folding screw is rotatably mounted on the adhesive-applying lifting frame and threadedly connected to the folding slide, so that the folding slide has a push rod state and a press rod state. In the push rod state, the initial folding rod performs one reciprocating motion; in the press rod state, the initial folding rod stops at different positions and abuts against different positions of the large box lid.

[0037] By adopting the above technical solution, in the push rod state, the initial folding rod can complete the flipping of the large box cover, and in the press rod state, the initial folding rod can press on different positions along the width direction of the large box cover, so that the tape attached to different positions along the width direction of the large box cover can be attached more tightly.

[0038] In summary, this application includes at least one of the following beneficial technical effects:

[0039] 1. Firstly, multiple tapes are applied to the wide and long sides of the large box lid and the carton. The tape distribution is not limited to the side of the large box lid away from the crease, so the sealing strength of the full-coverage box can be enhanced by expanding the tape distribution area. Secondly, the tape is applied along its own length to the sides of the large box lid and the carton. In this way, the application area of ​​the tape is not limited by the side length of the large box lid away from the crease, so the sealing strength of the full-coverage box can be enhanced by using tape with a larger application area. Attached Figure Description

[0040] Figure 1 This is a structural schematic diagram of the side sealing box equipment in this application.

[0041] Figure 2This is a schematic diagram used in this application to illustrate the specific structure and layout of the adhesive head.

[0042] Figure 3 This is a schematic diagram used in this application to illustrate how tape is applied to a cardboard box.

[0043] Figure 4 This is a schematic diagram used in this application to illustrate the specific structure of the leading element.

[0044] Figure 5 This is a schematic diagram used in this application to illustrate the layout of the head-mounted power source.

[0045] Figure 6 This is a schematic diagram illustrating the structural layout of the side-pressure drive component in this application.

[0046] Figure 7 This is a schematic diagram illustrating the mating structure of the wide-direction positioning frame and the wide-direction driving component in this application.

[0047] Figure 8 This is a schematic diagram used in this application to illustrate the cooperative structure between the stop block and the support platform.

[0048] Figure 9 This is a schematic diagram in this application illustrating how the stopper positions the front of the carton.

[0049] Figure 10 This is a schematic diagram illustrating the specific structure of the frame portion of the longitudinal conveyor in this application.

[0050] Figure 11 This is a schematic diagram illustrating the specific structure of the folding cover drive component in this application.

[0051] Explanation of reference numerals in the attached drawings: 1. Box receiving platform; 11. Longitudinal window; 2. Box fixing device; 21. Width positioning frame; 22. Width driving component; 23. Longitudinal conveyor; 231. Conveyor panel; 232. Transfer roller; 233. Connecting frame back plate; 234. Guide roller; 24. Blocking frame; 25. Stop block; 26. Blocking control component; 27. Longitudinal adjusting component; 3. Lid closing device; 31. Initial lid folding rod; 32. Lid folding driving component; 321. Lid folding fixed seat; 322. Lid folding moving rail; 323. Lid folding slide; 324. Lid folding screw; 33. Secondary lid closing cylinder; 4. Adhesive applicator; 41. Adhesive applicator head; 411. Wide-edge head; 412. Long-edge head; 42. Adhesive applicator gantry frame; 43. Adhesive applicator lifting frame; 431. Dual-output reducer; 44. Adhesive applicator box frame; 5. Tape output head; 51. Belt winding pulley; 52. Belt winding arm; 521. Belt winding roller; 522. Belt winding block; 53. Adhesive applicator roller; 54. Belt clamping arm; 55. Belt cutter; 56. Swing arm cylinder; 57. Belt clamping cylinder; 58. Belt pulling cylinder; 59. Cutter cylinder; 6. Side pressure belt block; 61. Side pressure drive component; 611. Power unit; 612. Transmission unit; 613. Output unit; 7. Adhesive applicator head frame. Detailed Implementation

[0052] The following is in conjunction with the appendix Figure 1-11 This application will be described in further detail.

[0053] This application discloses a side-sealing box device.

[0054] Side-sealing equipment is used to seal full-cover boxes. Full-cover boxes have two lids. When the two lids are closed, one lid is on top and the other is on the bottom. For ease of description later, the lid on top is called the large lid and the lid on the bottom is called the small lid. In this application, the equipment is mainly used on cartons containing large displays. When sealing such cartons, both lids are located on the upper side.

[0055] Reference Figure 1 The side-sealing equipment includes a box-holding platform 1, a box-fixing device 2, a lid-closing device 3, and an adhesive-applying device 4. The upper side of the box-holding platform 1 supports the carton. After the carton is placed on the box-holding platform 1, the box-fixing device 2 adjusts the carton's position to a predetermined sealing position. This predetermined sealing position can be any position on the box-holding platform 1; the core purpose is to ensure that the subsequent adhesive-applying process only occurs after the carton is in this position. The lid-closing device 3 closes the large lid onto the small lid, preparing for the subsequent adhesive-applying process.

[0056] Reference Figure 1 and Figure 2The adhesive applicator 4 includes multiple adhesive applicators 41, which are distributed on two wide sides and one long side of the carton. Each adhesive applicator 41 includes a tape ejector 5 and a side pressure block 6. Both the tape ejector 5 and the side pressure block 6 are movable, allowing them to move vertically and horizontally. The horizontal direction is perpendicular to the corresponding edge of the carton. Specifically, if the adhesive applicator 41 is located on the wide side of the carton, it moves horizontally along the long side of the carton.

[0057] Reference Figure 1 and Figure 2 For the tape dispenser 5, the front end of the tape will be exposed on the tape dispenser 5, and the adhesive side of the tape will be exposed. The tape dispenser 5 will abut against the large lid of the carton at the position where the front end of the tape is located. When the tape dispenser 5 abuts against the large lid, the front end of the tape will also stick to the large lid, thus completing the first step of the tape application process.

[0058] Reference Figure 1 and Figure 2 For the side pressure block 6, it is located behind the tape exit head 5 after the tape is applied. Here, "behind the tape" refers to the rear of the tape application path. For example, if the tape is applied from left to right, the side pressure block 6 is located to the left of the tape exit head 5; if the tape is applied from front to back, the side pressure block 6 is located in front of the tape exit head 5. After the tape is applied to the large box lid and cut, the tape falls to the side of the carton. At this time, the vertically moving side pressure block 6 abuts against the side of the carton to press the tape firmly, ensuring the tape adheres tightly to the side of the carton.

[0059] Reference Figure 1 and Figure 2 The tape application process of this equipment is as follows: First, the tape head 5 abuts against the large lid of the carton. Then, the tape head 5 moves in a direction perpendicular to its own edge until it leaves the carton at a predetermined distance. Then, the tape head 5 cuts the tape, causing it to fall to the side of the carton. Next, the side pressure block 6 abuts against the side of the carton. Finally, the side pressure block 6 moves downward to press the tape firmly, so that the tape adheres tightly to the side of the carton, thus completing the tape application process. After the tape in the remaining positions is applied, the side sealing process of the full-coverage carton is completed.

[0060] In summary, based on the above sealing process, we can conclude that: First, there will be tape on both the long and wide sides of the large box lid that are not creased; it's not just on the long sides that are not creased. Figure 3In the first part, A refers to the tape attached to the cardboard box. Therefore, the sealing strength of the full-coverage box can be enhanced by expanding the distribution area of ​​the tape. Secondly, since the tape is applied along its own length to the box lid and the sides of the cardboard box, the area covered by the tape is not limited by the length of the non-crease side of the box lid. Therefore, a longer tape can be used to enhance the sealing strength of the full-coverage box.

[0061] In addition, the belt head 5 and the side pressure block 6 only have simple horizontal and vertical movements, so the equipment has a simple structure and high sealing efficiency.

[0062] Reference Figure 1 and Figure 2 Since the wide and long sides of the large box lid may have more than one tape, one tape can be paired with one applicator 41, or multiple tapes on one side can be paired with one applicator 41. Considering the simplicity of the structure, it is preferable to pair multiple tapes on one side with one applicator 41, that is, there are three applicator 41 in total. With only three applicator 41, the applicator 41 needs to be able to move vertically, and also needs to be able to move horizontally along the wide and long sides of the carton, so as to adapt to the multiple tapes on the wide and long sides of the large box lid.

[0063] Reference Figure 1 and Figure 2 With three applicator heads 41, each head requires three-axis movement. Since each head includes a tape output head 5 and a side pressure block 6, both the tape output head 5 and the side pressure block 6 also require three-axis movement. Based on these movement requirements, and to simplify the equipment structure and control, the following configuration is implemented: Specifically, the applicator device 4 also includes an applicator gantry 42, an applicator lifting frame 43, and an applicator following frame 44. The applicator gantry 42 is fixedly installed in the production workshop. The applicator lifting frame 43 is vertically slidably mounted on the applicator gantry 42, located above the carton receiving platform 1. The applicator following frame 44 is horizontally slidably mounted on the applicator lifting frame 43, with the sliding direction parallel to the long side of the carton.

[0064] Reference Figure 2 and Figure 4 Each applicator 41 also includes an applicator frame 7, with one applicator frame 7 mounted on one applicator and box frame 44. The three applicator and box frames 44 move independently. The applicator frame 7 can move vertically and horizontally relative to the applicator and box frame 44, with the horizontal movement parallel to the width of the carton. Simultaneously, the tape dispenser 5 and the side pressure tape block 6 are both mounted on the applicator frame 7, and the side pressure tape block 6 can also move vertically relative to the applicator frame 7.

[0065] Based on the above structure, it can be seen that, firstly, the tape exit head 5 on the long side can apply adhesive at different positions along the long side through the movement of the adhesive applicator and box frame 44, while the tape exit head 5 on the wide side can apply adhesive at different positions along the wide side through the relative horizontal movement between the tape head frame 7 and the adhesive applicator and box frame 44. This allows for the use of fewer tape applicators 41 to complete the side sealing of a full-coverage carton. The smaller number of tape applicators 41 also means that they can be brought closer together, thus accommodating smaller cartons.

[0066] Secondly, in terms of vertical movement, the adhesive application lifting frame 43 provides a portion of the vertical movement, while the tape head 5 and the side pressure block 6 each provide the remaining portion of the vertical movement. This structure is similar to a drawer-type telescopic structure, which allows for a more compact structure to accommodate different cartons with greater height variations. It can also accommodate adhesive application processes with longer heights, thus enabling better carton sealing with smaller equipment.

[0067] Third, since the horizontal movement of the tape ejector 5 and the side pressure block 6 is synchronized, the side pressure block 6 will also abut against the large box lid during the tape application process, ensuring that the edge of the large box lid is tightly adhered to the small box lid. Just after the side pressure block 6 leaves the edge of the large box lid, it moves downwards first, allowing some tape to be applied to the side of the carton. Then, the tape ejector 5 cuts the tape, and the side pressure block 6 continues to move downwards, ensuring the remaining tape is fully adhered to the side of the carton. This tape application method results in a tighter adhesion at the corner between the edge of the large box lid and the side of the carton, as well as at the side of the carton itself, thus more easily improving the sealing strength of the full-coverage carton.

[0068] In summary, based on the three advantages mentioned above, it can be concluded that by setting the number of adhesive applicators 41 and their movement mode, the equipment becomes more compact. This compactness refers not only to the external production space but also to the internal space of the equipment. This compactness means that by appropriately increasing the space between internal components, it can accommodate a wider range of cartons. The equipment also provides better sealing quality, meaning the tape is applied more evenly and tightly, with even and tight tape at three locations: the large box lid, the edges between the large box lid and the sides, and the sides of the carton.

[0069] Reference Figure 2 and Figure 4To further refine the equipment's compactness, the mating structures between the adhesive applicator and box frame 44 and the adhesive applicator lifting frame 43, the adhesive head frame 7 and the adhesive applicator and box frame 44, and the adhesive applicator lifting frame 43 and the adhesive applicator gantry frame 42 need to be optimized. This means optimizing the movement of the adhesive applicator head 41. However, since the three adhesive applicators 41 are adapted to two wide sides and one long side respectively, the movement requirements of the adhesive applicator head 41 located on the wide side and the adhesive applicator head 41 located on the long side are not entirely the same, so their movement implementation methods will also differ. For ease of description, the three adhesive applicators 41 are divided into two wide-side heads 411 and one long-side head 412.

[0070] Reference Figure 2 Specifically, firstly, the tape applicator 44, which is matched with the wide-side head 411, is connected to the tape applicator lifting frame 43 via a lead screw linear module to stably apply the tape to the large box lid. Secondly, the tape applicator 44, which is matched with the long-side head 412, is connected to the tape applicator lifting frame 43 via a belt linear module to enable the tape applicator head 41 to move quickly and stop relatively accurately at different predetermined positions on the long side over a larger range. The lead screw linear module is installed in the middle of the tape applicator lifting frame 43, and the two lead screw linear modules are distributed along the long side of the carton. The belt linear module is installed at the edge of the tape applicator lifting frame 43. This way, the volume of the tape applicator lifting frame 43 is not significantly increased, while the required movement is met.

[0071] Reference Figure 2 and Figure 4 Secondly, the adhesive applicator 7 achieves horizontal movement with the adhesive applicator and box frame 44 via a lead screw linear module. For the wide-side head 411, this allows the adhesive applicator 41 to accurately stop at different predetermined positions on the narrower wide side. For the long-side head 412, this ensures stable application of tape to the large box lid, thus balancing compact structure and application stability. The adhesive applicator 7 achieves vertical movement with the adhesive applicator and box frame 44 via a cylinder. This vertical movement can be achieved through a pneumatic design, specifically through a combination of various control valves, allowing the cylinder piston rod to extend flexibly rather than rigidly. This gentle movement allows for passive adaptation even when there are errors in the height of the carton. This passive adaptation simplifies the control requirements of the equipment, and the structure is also simpler due to the use of only cylinders.

[0072] Reference Figure 2Thirdly, the adhesive application lifting frame 43 is equipped with a dual-output reducer 431, which is a hyperboloid reducer. The hyperboloid reducer is located between the lead screw linear module that matches the wide-side head 411. The output end of the dual-output reducer 431 is connected to the adhesive application gantry 42 by a gear and rack transmission. Specifically, a shaft is installed through the output end of the dual-output reducer 431, and a gear is installed at each end of the shaft. A rack is set on each side of the adhesive application gantry 42, and the rack meshes with the gear, thus forming a gear and rack transmission lifting mechanism. The advantage of this lifting method is that it has a strong load-bearing capacity, only one power source, simple structure, and simple control.

[0073] In summary, by specially setting the movement of the adhesive applicator 41, the device can be made more concise and compact. Similarly, this compactness is also to be able to adapt to a wider range of cardboard boxes.

[0074] Reference Figure 1 and Figure 2 For the tape dispenser 5, it is necessary to adhere the tape to the carton in a taut state and also to be able to cut the tape. In addition, considering that the equipment of this application needs to be adapted to full-coverage cartons, the tape dispenser 5 also needs to adhere the tape to the carton more smoothly and tightly. Therefore, the functional requirements of the tape dispenser 5 are relatively high. The high functional requirements mean that the structure of the tape dispenser 5 will be complex. However, in order to maintain the simplicity of the structure of the tape dispenser 5 and to adapt to a wider range of carton sizes while keeping the equipment relatively small, the structure of the tape dispenser 5 needs to be optimized.

[0075] Reference Figure 2 and 4 Specifically, the tape output head 5 includes a tape reel 51, a tape winding arm 52, a tape applicator roller 53, a tape clamping arm 54, and a tape cutter 55. The tape reel 51 is rotatably mounted on the tape head holder 7. The tape reel 51 is used to hold the tape. The tape reel 51 is a damping wheel, meaning that tension needs to be applied to the front end of the tape to allow the tape reel 51 to gradually feed the tape out. One end of the tape winding arm 52 is hinged to the lower side of the tape head holder 7. The hinged setting allows the end of the tape winding arm 52 away from the tape head holder 7 to swing up and down. The swing direction is from the unapplied area to the applied area. For example, if the tape is applied from left to right, the tape winding arm 52 swings from the upper left to the lower right. The side of the tape winding arm 52 away from the side pressure block 6 is used for tape winding. The winding is to maintain the tension of the tape, so the tape winding arm 52 has a cylindrical tape winding roller 521 and a rectangular tape winding block 522.

[0076] Reference Figure 2 and Figure 4The tape applicator roller 53 is rotatably mounted on the end of the tape winding arm 52 away from the tape head holder 7, with its rotation axis parallel to the hinge axis of the tape winding arm 52. The tape clamping arm 54 is movably mounted on the side of the tape winding arm 52 away from the side pressure block 6. This movability allows the tape clamping arm 54 to move closer to or further away from the tape winding arm 52, and also allows it to move closer to or further away from the tape applicator roller 53. The tape cutter 55 is slidably mounted on the side of the tape winding arm 52 away from the side pressure block 6. The tape cutter 55 cooperates with the end of the tape winding arm 52 near the tape applicator roller 53 to achieve cutting; that is, the tape cutter 55 will move closer to the tape winding arm 52 to cut the tape.

[0077] Based on the structure of lead 5 above, the actions in each of the following stages are coordinated as follows:

[0078] First, before the adhesive is applied, the front end of the tape is located at the end of the wrapping arm 52 near the tape roller 53. The clamping arm 54 closes onto the wrapping arm 52 to clamp the tape, and works with the damping reel 51 to ensure that the tape is installed on the tape exit head 5 in a taut state.

[0079] Second, before applying the adhesive, the clamping arm 54, which is closed on the wrapping arm 52, moves toward the tape roller 53 to pull the front end of the tape toward the tape roller 53 until the front end of the tape reaches the tape roller 53. Then, the wrapping arm 52 rotates away from the tape head frame 7 so that the tape roller 53 and the front end of the tape abut against the large box cover in the direction from the back of the tape to the front of the tape.

[0080] Third, during the tape application process, the clamping arm 54 moves away from the wrapping arm 52 to loosen the tape, so that the tape can be smoothly delivered.

[0081] Fourth, before the tape cutter 55 cuts the tape, the clamping arm 54 is moved away from the tape roller 53, and then the clamping arm 54 is closed on the wrapping arm 52 to clamp the tape, providing a stable environment for the subsequent tape cutting.

[0082] In summary, based on the above actions, it can be concluded that the tape unwinding head 5 does not employ a power structure, thus ensuring its structural simplicity. The method of attaching the tape tip to the large box lid allows for precise and tight adhesion of the tape tip, enhancing the sealing strength of the full-coverage box. This precision means it is relatively easy to achieve, requiring minimal complex control and calibration, thus simplifying the equipment's structure and operation.

[0083] Reference Figure 4 and Figure 5Since the wrapping arm 52, clamping arm 54, and cutting blade 55 need to move, and this movement naturally involves a power source, the selection and layout of the power source will also affect the structural compactness of the tape head 5. Specifically, from the perspective of power source selection, the wrapping arm 52 is connected to a swing arm cylinder 56, a clamping cylinder 57, a pulling cylinder 58, and a cutting blade cylinder 59. The piston rod of the swing arm cylinder 56 is hinged to the wrapping arm 52, and the housing of the swing arm cylinder 56 is hinged to the tape head frame 7. The hinge axes at the two hinge points are parallel to the hinge axis of the wrapping arm 52.

[0084] Reference Figure 4 and Figure 5 The clamping cylinder 57 is a slide cylinder, and its output slide is connected to the clamping arm 54. The clamping cylinder 57 causes the clamping arm 54 to move closer to or further away from the wrapping arm 52. The housing of the pulling cylinder 58 is fixedly mounted on the wrapping arm 52, and its piston rod is connected to the housing of the clamping cylinder 57. The pulling cylinder 58 causes the clamping arm 54 to move closer to or further away from the tape-applying roller 53. The housing of the cutting cylinder 59 is fixedly mounted on the wrapping arm 52, and its piston rod is connected to the cutting blade 55.

[0085] Based on the above power source selection, we can conclude that: First, while achieving the required movements of the wrapping arm 52, clamping arm 54, and cutting knife 55, the structure of the tape head 5 can be simplified. Second, since the clamping cylinder 57 is a sliding cylinder, due to its sliding rail structure, when the clamping arm 54 pulls the tape, the clamping arm 54 will not move relative to the piston rod of the pulling cylinder 58 along the length of the wrapping arm 52. This allows the clamping arm 54 to precisely stop at the predetermined position of the wrapping arm 52, thus precisely controlling the length of the tape front end exposed outside the clamping arm 54. Furthermore, the sliding cylinder is smaller than a regular cylinder, resulting in a simpler structure for the tape head 5 and allowing the tape front end to be more evenly and tightly adhered to the large box cover after subsequent adhesive application.

[0086] Reference Figure 4 and Figure 5 Considering the layout of the power source, along the hinge axis of the winding arm 52, the swing arm cylinder 56, clamping cylinder 57, pulling cylinder 58, and cutting cylinder 59 are all located on the same side of the winding arm 52. This side is the side where the winding arm 52 connects to the rubber head frame 7. The clamping cylinder 57 and pulling cylinder 58 are both located on the end face of the winding arm 52. This end face is the end face where the winding arm 52 connects to the rubber head frame 7. The end face where the winding arm 52 connects to the rubber head frame 7 is as follows: Figure 5The end face referred to in section B is the side of the wrapping arm 52 that connects to the rubber head bracket 7. Meanwhile, the swing arm cylinder 56 and the cutter cylinder 59 are both located on the side of the wrapping arm 52 near the side pressure block 6.

[0087] Based on the layout of the power source, it can be concluded that the side of the wrapping arm 52 furthest from the tape head holder 7 has fewer components. This allows for a shorter length of the wrapping arm 52, reducing the difficulty of maintaining tape tension. Furthermore, within the wrapping arm 52, located... Figure 5 On the other side of the end face indicated by B, space can be reserved for workers to maintain the tape.

[0088] Reference Figure 4 and Figure 6 Since the applicator head 41 also includes a side pressure belt block 6, which moves vertically relative to the applicator head frame 7, the power source driving the side pressure belt block 6 also affects the structural simplicity of the applicator head 41. Specifically, a side pressure drive component 61 is provided between the side pressure belt block 6 and the applicator head frame 7. The side pressure drive component 61 is a belt linear module. The belt linear module also utilizes its own characteristics to adapt to the uneven surface of the large box cover when the side pressure belt block 6 abuts against it. The side pressure drive component 61 is divided into a power unit 611, a transmission unit 612, and an output unit 613. The power unit 611 is a motor with an L-shaped reducer, the transmission unit 612 is a belt drive mechanism, and the output unit 613 is a linear guide rail with a belt drive mechanism. The power unit 611, the transmission unit 612, and the output unit 613 are distributed in a U-shaped bend, with the opening of the U-shape facing downwards. The linear guide slide in the output section 613 is connected to the side pressure block 6, which is cylindrical and rotatably mounted on the output section 613. The above describes the selection of the side pressure drive component 61 and its corresponding structural layout.

[0089] Reference Figure 4 and Figure 6 The side-pressure drive unit 61 is mounted on the tape head holder 7, and the tape head holder 7 also has a tape outlet 5. Therefore, the relative positional relationship between the side-pressure drive unit 61 and the tape outlet 5 also needs to be considered. Specifically, along the hinge axis of the tape winding arm 52, the side-pressure drive unit 61 is located on the side away from the cutter cylinder 59, that is, away from... Figure 5 On the side where the end face indicated by B is located, the side pressure drive 61 and the cutter cylinder 59 are arranged to overlap front and back. That is, when looking along the hinge axis of the belt arm 52, the side pressure drive 61 and the cutter cylinder 59 will block each other and cannot be fully seen.

[0090] In summary, based on the special design of the side-pressure drive component 61, we can conclude that: Firstly, the structural layout of the side-pressure drive component 61 allows for a smaller vertical span of the adhesive applicator 41. A smaller span means the wrapping arm 52 doesn't need to be too long, thus reducing the difficulty of maintaining tape tension. Secondly, for the wide-edge head 411, its length along the width of the carton can be reduced, maintaining a compact structure. Specifically, due to varying carton sizes, the wide-edge head 411 may be located on the outside of the adhesive applicator gantry 42, or sometimes on the inside. When located inside the adhesive applicator gantry 42, the length of the wide-edge head 411 along the width of the carton affects the dimensions of the adhesive applicator gantry 42.

[0091] Secondly, the relative position between the side pressure drive unit 61 and the cutter cylinder 59 can reduce the span of the adhesive applicator 41 in the adhesive application direction. For the wide-side head 411, that is, the span along the long side of the carton will be smaller, and for the long-side head 412, that is, the span along the wide side of the carton will be smaller. The smaller span means that the three adhesive applicators 41 can be brought closer together, thus making it possible to adapt to smaller full-coverage cartons.

[0092] In summary, the above are the optimization settings related to the adhesive applicator 4. The core purpose of these optimizations is to optimize the adhesive applicator mechanism and the adhesive applicator head 41. Specifically, firstly, the movement of the adhesive applicator head 41 is made more flexible. This flexibility applies not only to one adhesive applicator head 41, but to all three adhesive applicator heads 41, meaning that the three adhesive applicator heads 41 need to move together or independently at different times. Secondly, the structure and operation of the adhesive applicator head 41 are simplified. The ultimate goal of a simplified structure and operation is to allow the three adhesive applicator heads 41 to close closer together, thus adapting to smaller full-coverage boxes. Furthermore, due to the simplified operation, it can adapt to uneven surfaces of cartons and other irregularly shaped cartons, such as triangular prism-shaped cartons. Third, the adhesive quality of the adhesive applicator 41 is better. The better quality means that the tape is applied more smoothly and tightly in three locations: the lid of the large box, the corner between the edge of the large box lid and the side of the carton, and the side of the carton. Moreover, this smoothness and tightness cannot be limited by the length of the tape. In other words, no matter how long the tape can be applied, the tape must be smooth and tight after application.

[0093] In summary, it is necessary to improve the environmental adaptability of the adhesive applicator 41 and the quality of the adhesive application process. The two are complementary. Good environmental adaptability requires high-quality adhesive application, and high-quality adhesive application is essential for good environmental adaptability.

[0094] Reference Figure 1 and Figure 7Based on the aforementioned optimization of the adhesive applicator 4, the box receiving platform 1 and the box fixing device 2 also need to be adapted accordingly. Specifically, the box receiving platform 1 is a non-powered roller conveyor. The box fixing device 2 includes a width positioning frame 21, a width driving component 22, and a length conveyor 23. The width positioning frame 21 is horizontally slidably mounted on the box receiving platform 1, with the sliding direction parallel to the roller axis of the box receiving platform 1, that is, parallel to the width of the carton. There are two width positioning frames 21 distributed along their own sliding direction. The width driving component 22 is mounted on the box receiving platform 1 and is connected to the two width positioning frames 21, causing the two width positioning frames 21 to move closer or further apart. Specifically, the width driving component 22 will adopt a structure of motor plus bidirectional lead screw. The length conveyor 23 is a belt conveyor, with one length conveyor 23 mounted on one width positioning frame 21. The side of the two length conveyors 23 that are close to each other will abut against the carton.

[0095] Based on the cooperation between the receiving platform 1 and the carton fixing device 2, we can conclude that: First, the receiving platform 1 and the carton are in rolling contact. The longitudinal conveyor 23 applies a longitudinal conveying force to the carton with a larger contact area, which allows for more stable and faster transport of large-sized cartons and reduces the likelihood of slippage. This ensures more precise stopping positions for the carton, enabling rapid centering along its length. Second, with the coordinated operation of the width positioning frame 21 and the longitudinal conveyor 23, rapid centering of the carton in the width direction can be achieved through the movement of the width positioning frame 21. Simultaneously, the two longitudinal conveyors 23 can apply conveying forces in opposite directions to further achieve rotational centering. Therefore, a more comprehensive centering process can be achieved. Here, "comprehensive" should be understood as meaning that when the carton is on the receiving platform 1, there are not only simple displacement deviations in the width and length directions, but also rotational deviations around the vertical axis. Therefore, it is necessary to adapt to both of these deviations. The other two longitudinal conveyors 23 apply conveying forces in opposite directions, which can make the carton rotate. This can accommodate some cartons that do not only have three sections and need to be taped, as well as some non-standard rectangular cartons, such as triangular prism-shaped cartons.

[0096] Reference Figure 1 and Figure 8 In terms of width, when the two longitudinal conveyors 23 simultaneously contact the carton, the carton is centered in the width direction. However, in terms of length, a longitudinal positioning device is required to quickly determine that the carton has been centered in the length direction. Specifically, the receiving platform 1 has a longitudinal window 11 on its front side. The front side is the position that the carton passes through when it leaves the receiving platform 1 after the carton has been glued. The longitudinal window 11 is achieved by rollers spaced apart on the receiving platform 1. Through this structure, the longitudinal window 11 can connect the top and bottom of the rollers on the receiving platform 1, providing a spatial basis for the operation of the longitudinal positioning device.

[0097] Reference Figure 8 and Figure 9 The carton fixing device 2 also includes a blocking frame 24, a stop block 25, a blocking control component 26, and a longitudinal adjustment component 27. The lower end of the blocking frame 24 is located below the roller of the carton receiving platform 1, and the upper end of the blocking frame 24 passes through the longitudinal window 11. The stop block 25 is slidably mounted on the upper end of the blocking frame 24. The sliding direction of the stop block 25 is perpendicular to the roller axis of the carton receiving platform 1. One side of the stop block 25 abuts against the front surface of the carton, and the opposite side of the stop block 25 abuts against the blocking frame 24. The stop block 25 and the blocking frame 24 are connected by a buffer, which is achieved by a spring. In this way, as the stop block 25 approaches the blocking frame 24, it will be subjected to a force away from the blocking frame 24.

[0098] Reference Figure 8 and Figure 9 The blocking control component 26 is located below the roller of the receiving platform 1. The blocking control component 26 is a cylinder, and its piston rod is connected to the blocking frame 24. The blocking control component 26 causes the stop block 25 to enter or leave above the roller of the receiving platform 1. The longitudinal adjustment component 27 is located below the roller of the receiving platform 1. The longitudinal adjustment component 27 is a lead screw linear module. The slide of the longitudinal adjustment component 27 is connected to the housing of the blocking control component 26. When the stop block 25 is above the roller of the receiving platform 1, it causes the blocking frame 24 to move in a direction perpendicular to the roller axis of the receiving platform 1, thereby changing the position of the stop block 25 on the receiving platform 1.

[0099] Based on the combined action of the longitudinal positioning device, it can be concluded that: First, with the coordinated operation of the longitudinal adjusting component 27 and the blocking control component 26, the stop block 25 can be positioned at different locations on the front side of the receiving platform 1 to abut against cartons of different lengths, thereby adapting to the centering process of cartons of different sizes in the longitudinal direction. Second, when the two longitudinal conveyors 23 apply forces in opposite directions to rotate the cartons, the longitudinal adjusting component 27 can be used to allow the stop block 25 to push the cartons to balance the force difference between the two longitudinal conveyors 23, thus preventing the cartons from shifting along the longitudinal direction during rotational correction.

[0100] Third, the buffered connection between the stop block 25 and the blocking frame 24 allows the repulsive force between the stop block 25 and the blocking frame 24 to gradually stop the carton when it comes into contact with the stationary stop block 25, making the stopping position of the carton more accurate. When the carton comes into contact with the moving stop block 25, the force applied by the stop block 25 will be gentler, so that the force difference between the two longitudinal conveyors 23 can be more accurately balanced when the carton is rotated and aligned, thus making the alignment process of the carton smoother and simpler.

[0101] In summary, it needs to be able to achieve both static positioning along the long side of the carton and dynamic position correction along the long side of the carton.

[0102] Reference Figure 1 The longitudinal conveyor 23 applies conveying force to the carton through the friction of the belt. Since the cartons adapted to by the equipment in this application are relatively heavy, a belt with greater friction is required. Specifically, the belt of the longitudinal conveyor 23 is a PVC material belt with raised anti-slip material. However, because the friction of the belt is increased, the driving capacity of the longitudinal conveyor 23 is also required. Therefore, the driving part of the longitudinal conveyor 23 adopts a motor plus a transmission chain to maintain the normal operation of the longitudinal conveyor 23 through a transmission structure with higher transmission strength.

[0103] Reference Figure 1 As mentioned earlier, the longitudinal conveyor 23 transports cartons through the friction of the belt. This friction requires the belt to make full contact with the cartons. Therefore, the frame of the longitudinal conveyor 23 needs to ensure both sufficient belt contact with the cartons and smooth belt movement. Furthermore, the longitudinal conveyor 23 participates in centering along the width of the cartons. Therefore, the width positioning frame 21 must be able to effectively transfer the centering clamping force to the longitudinal conveyor 23. In turn, the longitudinal conveyor 23 must be able to effectively transfer the centering clamping force to the cartons. Thus, the frame of the longitudinal conveyor 23 needs to adequately support the belt and also adequately connect to the width positioning frame 21.

[0104] Reference Figure 1 and Figure 10 The frame of the longitudinal conveyor 23 includes a conveyor panel 231, transfer rollers 232, a connecting back plate 233, and guide rollers 234. The conveyor panel 231 is fixedly installed on one side of two longitudinal conveyors 23 that are close to each other. Multiple conveyor panels 231 are distributed along the conveying direction of the longitudinal conveyor 23, and the conveyor panels 231 slide against the inner side of the belt in the longitudinal conveyor 23. The transfer rollers 232 are rotatably installed and distributed along the conveying direction of the longitudinal conveyor 23. The transfer rollers 232 roll against the inner side of the belt in the longitudinal conveyor 23.

[0105] Reference Figure 1 and Figure 10 The connecting frame back plate 233 is fixedly installed on the side of the two longitudinal conveyors 23 that is far apart from each other. The connecting frame back plate 233 is located on the outside of the belt of the longitudinal conveyor 23. The side of the connecting frame back plate 233 that is far away from the conveyor panel 231 is connected to the wide positioning frame 21. The guide roller 234 is rotatably installed on the side of the two longitudinal conveyors 23 that is far apart from each other. The guide roller 234 is located at both ends of the connecting frame back plate 233 along the conveying direction of the longitudinal conveyor 23. The guide roller 234 rolls and abuts against the outside of the belt in the longitudinal conveyor 23.

[0106] Based on the frame of the longitudinal conveyor 23, it can be concluded that: First, the conveyor panel 231 prevents the belt from collapsing, ensuring the belt makes full contact with the carton. Simultaneously, the conveyor panel 231 allows the longitudinal conveyor 23 to apply sufficient centering clamping force in the width direction. However, due to the sliding contact between the conveyor panel 231 and the belt, a transfer roller 232 is also provided to maintain smooth belt movement. Second, the connecting back plate 233 expands the connection area between the frame of the longitudinal conveyor 23 and the width positioning frame 21, allowing the width positioning frame 21 to more effectively transfer the centering clamping force to the longitudinal conveyor 23. Furthermore, since the edge of the connecting back plate 233 obstructs belt transmission, a guide roller 234 is also provided.

[0107] In summary, the above are the optimization settings related to the carton receiving platform 1 and the carton fixing device 2. The core purpose of the above optimization settings is to enable the carton to change its posture quickly, accurately and flexibly. The posture change includes changing from a non-standard posture to a standard posture, and changing from one standard posture to another. Based on this function, it can also be adapted to the function of the adhesive applicator 4, thereby enhancing the environmental adaptability of the entire equipment and the quality of adhesive application.

[0108] Reference Figure 2 and Figure 11 Since the large and small box lids need to be closed before the adhesive application, and considering the equipment's simple structure and performance requirements, the small box lid is already closed before the carton enters the equipment. Therefore, this equipment only needs to close the large box lid onto the small box lid. Specifically, the lid closing device 3 includes a primary lid folding rod 31, a lid folding drive component 32, and a secondary lid closing cylinder 33. The primary lid folding rod 31 is horizontally slidably mounted on the adhesive application lifting frame 43, with the sliding direction perpendicular to the movement direction of the adhesive application and box frame 44, that is, along the width of the carton. The primary lid folding rod 31 will abut against the large box lid of the carton.

[0109] Reference Figure 1 and Figure 2 The folding drive component 32 is mounted on the adhesive application lifting frame 43 and is connected to the initial folding rod 31. The folding drive component 32 causes the initial folding rod 31 to push the large box cover to flip. The secondary closing cylinder 33 is fixedly mounted on the adhesive application lifting frame 43 and is tilted. The secondary closing cylinder 33 is located on the side where the fold of the large box cover is located, that is, the secondary closing cylinder 33 can be positioned opposite the long side head 412 to maintain the compactness of the equipment space. At the same time, after the initial folding rod 31 flips the large box cover to a predetermined angle, the piston rod of the secondary closing cylinder 33 will push the large box cover to close on the small box cover.

[0110] Reference Figure 1 and Figure 2The working principle of the lid-closing device 3 is as follows: before the adhesive application, the initial lid-folding rod 31 is moved by the lid-folding drive 32 to rotate the large lid to a predetermined angle. Then, the piston rod of the secondary lid-closing cylinder 33 extends, and the adhesive application lifting frame 43 descends so that the piston rod of the secondary lid-closing cylinder 33 abuts against the large lid until the large lid closes onto the small lid, thus achieving a complete lid-closing action. From the above lid-closing action, it can be seen that both the lid-folding drive 32 and the secondary lid-closing cylinder 33 are stationary power sources on the adhesive application lifting frame 43 and are located inside the adhesive application gantry 42. Therefore, the stationary power sources can maintain the compact structure of the equipment.

[0111] Additionally, when applying the first tape to the wide edge of the large box lid, the piston rod of the secondary lid-closing cylinder 33 will continuously press against the large box lid to seal the carton when the large box lid and the small box lid are tightly closed, thereby improving the sealing strength of the full-coverage carton.

[0112] Reference Figure 1 and Figure 2 As mentioned above, the wide edge of the large box cover may have more than one tape. In the case of multiple tapes, it is necessary to first apply the tape close to the crease of the large box cover. Since the position of the secondary box cover cylinder is the position of the large box cover away from the crease, an additional device is needed to press down the large box cover close to the crease. However, considering the limited internal space of the tape application gantry 42, the initial folding rod 31 will be used to perform this function, and the folding drive component 32 will be optimized.

[0113] Reference Figure 2 and Figure 11 Specifically, the folding drive component 32 includes a folding base 321, a folding rail 322, a folding slide 323, and a folding screw 324. The folding base 321 is fixedly mounted on the adhesive application lifting frame 43. The folding rail 322 is slidably connected to the folding base 321, with a connection similar to a linear guide. The sliding direction of the folding rail 322 is parallel to its length direction, with one part of the folding rail 322 inside the folding base 321 and the other part outside the folding base 321. The folding slide 323 is fixedly connected to the folding rail 322 and is connected to the initial folding rod 31. The folding screw 324 is rotatably mounted on the adhesive application lifting frame 43. The folding screw 324 is threadedly connected to the folding slide 323, so that the folding slide 323 has a push rod state and a press rod state. In the push rod state, the initial folding rod 31 makes one reciprocating motion. In the press rod state, the initial folding rod 31 stops at different positions and abuts against different positions of the large box lid.

[0114] In summary, in the push-rod state, the initial folding rod 31 can complete the flipping of the large box cover. In the press-rod state, the initial folding rod 31 can press on different positions along the width of the large box cover, so that the tape applied to different positions along the width of the large box cover can be applied more tightly.

[0115] In summary, the advantages of this equipment are that it can apply adhesive to a wider variety of types and sizes of cartons, it can perform diverse adhesive application processes, and it can apply adhesive to cartons with higher quality. These three functions are achieved through the complementary and coordinated operation of the carton receiving platform 1, the carton fixing device 2, the lid closing device 3, and the adhesive application device 4 in the equipment.

[0116] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A side-sealing box device, characterized in that: include: The upper side of the carton support platform (1) is used to support the carton; The carton positioning device (2) is used to position the carton at a predetermined sealing position on the carton receiving platform (1); The lid closing device (3) is used to close the two lids of the carton; The adhesive applicator (4) includes multiple adhesive applicators (41), which are distributed on two wide sides and one long side of the carton. Each adhesive applicator (41) includes a tape outlet (5) and a side pressure block (6). Both the tape outlet (5) and the side pressure block (6) are movable. The movable arrangement allows the tape outlet (5) and the side pressure block (6) to have vertical movement freedom and horizontal movement freedom perpendicular to the corresponding edge of the carton. The front end of the tape is exposed on the tape outlet (5). The tape outlet (5) is used to abut against the large lid of the carton at the position of the tape front end. The side pressure block (6) is located behind the tape outlet (5). After the tape is applied to the large lid and cut, the tape first falls to the side of the carton. Then, the vertically moving side pressure block (6) abuts against the side of the carton to press the tape, so that the tape is tightly attached to the side of the carton. The adhesive applicator (4) further includes an adhesive applicator gantry (42), an adhesive applicator lifting frame (43), and an adhesive applicator following frame (44); the adhesive applicator gantry (42) is fixedly installed; the adhesive applicator lifting frame (43) is vertically slidably installed on the adhesive applicator gantry (42), the adhesive applicator lifting frame (43) is located above the carton receiving platform (1), and the adhesive applicator following frame (44) is horizontally slidably installed on the adhesive applicator lifting frame (43), with the sliding direction parallel to the long side of the carton; the adhesive applicator head (41) further includes an adhesive head. The frame (7) has three adhesive applicators (41). One adhesive applicator frame (7) is mounted on one adhesive applicator and box frame (44). The three adhesive applicator and box frames (44) move independently. The adhesive applicator frame (7) has a vertical degree of freedom and a degree of freedom parallel to the width of the carton relative to the adhesive applicator and box frame (44). The tape outlet (5) and the side pressure tape block (6) are both mounted on the adhesive applicator frame (7). The side pressure tape block (6) has a vertical degree of freedom relative to the adhesive applicator frame (7).

2. The side-sealing box equipment according to claim 1, characterized in that: The three adhesive applicator heads (41) are divided into two wide-side heads (411) and one long-side head (412). The adhesive applicator frame (44) that the wide-side head (411) is engaged with is connected to the adhesive applicator lifting frame (43) through a lead screw linear module. The adhesive applicator frame (44) that the long-side head (412) is engaged with is connected to the adhesive applicator lifting frame (43) through a belt linear module. The adhesive applicator frame (7) is connected to the adhesive applicator frame (44) through a lead screw linear module. The horizontal movement between them is achieved by the glue head frame (7) through the cylinder to realize the vertical movement between it and the glue application box frame (44), so that the glue head frame (7) can make flexible vertical movement; the glue application lifting frame (43) is equipped with a dual output reducer (431), the dual output reducer (431) is located between the lead screw linear module connected to the glue application box frame (44), and the output end of the dual output reducer (431) is connected to the glue application gantry frame (42) by a gear and rack transmission.

3. The side-sealing box equipment according to claim 2, characterized in that: The tape output head (5) includes a tape reel (51), a tape winding arm (52), a tape applicator roller (53), a tape clamping arm (54), and a tape cutter (55); the tape reel (51) is rotatably mounted on the tape head holder (7) and is used to hold the tape; one end of the tape winding arm (52) is hinged to the lower side of the tape head holder (7), and the hinged arrangement allows the end of the tape winding arm (52) away from the tape head holder (7) to swing up and down, and the side of the tape winding arm (52) away from the side pressure block (6) is used for tape winding; the tape applicator roller (53) is rotatably mounted on the tape winding arm (52) away from the tape head holder (7). At one end, the rotation axis is parallel to the hinge axis of the wrapping arm (52); the clamping arm (54) is movably disposed on the side of the wrapping arm (52) away from the side pressure block (6), and the movable arrangement causes the clamping arm (54) to move in a direction close to or away from the wrapping arm (52), and also causes the clamping arm (54) to move in a direction close to or away from the tape roller (53); the cutting knife (55) is slidably disposed on the side of the wrapping arm (52) away from the side pressure block (6), and the cutting knife (55) cooperates with the end of the wrapping arm (52) close to the tape roller (53) to achieve cutting.

4. The side-sealing box equipment according to claim 3, characterized in that: The wrapping arm (52) is connected to a swing arm cylinder (56), a clamping cylinder (57), a pulling cylinder (58), and a cutting cylinder (59); the piston rod of the swing arm cylinder (56) is hinged to the wrapping arm (52), and the housing of the swing arm cylinder (56) is hinged to the rubber head frame (7); the clamping cylinder (57) is a slide cylinder, and the output slide of the clamping cylinder (57) is connected to the clamping arm (54), which causes the clamping arm (54) to move closer to or further away from the wrapping arm (52); the housing of the pulling cylinder (58) is fixedly mounted on the wrapping arm (52), and the piston rod of the pulling cylinder (58) is connected to the housing of the clamping cylinder (57). The clamping arm (54) moves closer to or further away from the tape roller (53); the housing of the cutter cylinder (59) is fixedly mounted on the winding arm (52), and the piston rod of the cutter cylinder (59) is connected to the cutter (55); along the hinge axis of the winding arm (52), the swing arm cylinder (56), the clamping cylinder (57), the pulling cylinder (58), and the cutter cylinder (59) are all located on the same side of the winding arm (52), and the clamping cylinder (57) and the pulling cylinder (58) are both located on the end face of the winding arm (52); the swing arm cylinder (56) and the cutter cylinder (59) are both located on the side of the winding arm (52) closer to the side pressure block (6); A side pressure drive (61) is provided between the side pressure belt block (6) and the rubber head frame (7). The side pressure drive (61) is a straight belt module. The side pressure drive (61) is divided into a power part (611), a transmission part (612) and an output part (613). The power part (611), the transmission part (612) and the output part (613) are distributed in a U-shaped bend with the opening facing downward. The output part (613) is connected to the side pressure belt block (6). Along the hinge axis of the belt arm (52), the side pressure drive (61) is located on the side away from the cutter cylinder (59). The side pressure drive (61) and the cutter cylinder (59) are arranged to overlap front and back.

5. The side-sealing box equipment according to claim 4, characterized in that: The receiving platform (1) is a non-powered roller conveyor; the box fixing device (2) includes a wide-direction positioning frame (21), a wide-direction driving component (22), and a long-direction conveyor (23); the wide-direction positioning frame (21) is horizontally slidably arranged on the receiving platform (1), and the sliding direction is parallel to the roller axis direction of the receiving platform (1). There are two wide-direction positioning frames (21) distributed along their own sliding direction; the wide-direction driving component (22) is arranged on the receiving platform (1), and the wide-direction driving component (22) is connected to the two wide-direction positioning frames (21) so that the two wide-direction positioning frames (21) are close to or far away from each other; the long-direction conveyor (23) is a belt conveyor, and one long-direction conveyor (23) is arranged on one wide-direction positioning frame (21). The side of the two long-direction conveyors (23) that are close to each other is used to abut the carton.

6. The side-sealing box equipment according to claim 5, characterized in that: The receiving platform (1) has a long window (11) on its front side, which connects the top and bottom of the roller of the receiving platform (1). The box fixing device (2) also includes a blocking frame (24), a stop block (25), a blocking control component (26), and a long adjustment component (27). The lower end of the blocking frame (24) is located below the roller of the receiving platform (1), and the upper end of the blocking frame (24) passes through the long window (11). The stop block (25) is slidably disposed on the upper end of the blocking frame (24), and the sliding direction of the stop block (25) is perpendicular to the roller axis of the receiving platform (1). One side of the stop block (25) is used to abut against the front surface of the carton, and the opposite side of the stop block (25) is used to abut against the blocking frame (24). (25) is buffered to the blocking frame (24), so that the blocking block (25) is subjected to a force away from the blocking frame (24) as it approaches the blocking frame (24); the blocking control member (26) is located below the roller of the receiving platform (1), and the blocking control member (26) is connected to the blocking frame (24) to allow the blocking block (25) to enter or leave the roller of the receiving platform (1); the longitudinal adjustment member (27) is located below the roller of the receiving platform (1), and the longitudinal adjustment member (27) is connected to the blocking control member (26) to allow the blocking frame (24) to move along the direction perpendicular to the roller axis of the receiving platform (1) when the blocking block (25) is above the roller of the receiving platform (1).

7. The side-sealing box equipment according to claim 5, characterized in that: The belt of the longitudinal conveyor (23) is an anti-slip belt; the drive part of the longitudinal conveyor (23) is a motor plus a transmission chain; the frame of the longitudinal conveyor (23) includes a conveyor panel (231), a transfer roller (232), a connecting frame back plate (233), and a guide roller (234); the conveyor panel (231) is fixedly installed, and the conveyor panel (231) is located on the side of the two longitudinal conveyors (23) that are close to each other. Multiple conveyor panels (231) are distributed along the conveying direction of the longitudinal conveyor (23), and the conveyor panel (231) abuts against the inner side of the belt in the longitudinal conveyor (23); the transfer roller (232) is rotatably installed, and the transfer roller (232) is distributed along the conveying direction of the longitudinal conveyor (23), and the transfer roller (234) is rotatably installed. 32) It abuts against the inner side of the belt of the longitudinal conveyor (23); the connecting frame back plate (233) is fixedly installed, the connecting frame back plate (233) is located on the side of the two longitudinal conveyors (23) that are far apart from each other, the connecting frame back plate (233) is located on the outer side of the belt of the longitudinal conveyor (23), and the side of the connecting frame back plate (233) that is far away from the conveying panel (231) is connected to the wide positioning frame (21); the guide roller (234) is rotatably installed, the guide roller (234) is located on the side of the two longitudinal conveyors (23) that are far apart from each other, the guide roller (234) is located at both ends of the connecting frame back plate (233) along the conveying direction of the longitudinal conveyor (23), and the guide roller (234) abuts against the outer side of the belt in the longitudinal conveyor (23).

8. The side-sealing box equipment according to claim 4, characterized in that: The lid-closing device (3) includes a primary lid-folding rod (31), a lid-folding drive component (32), and a secondary lid-closing cylinder (33). The primary lid-folding rod (31) is horizontally slidably mounted on the adhesive-applying lifting frame (43), with the sliding direction perpendicular to the movement direction of the adhesive-applying and box-mounting frame (44). The primary lid-folding rod (31) is used to abut against the large lid of the carton. The lid-folding drive component (32) is mounted on the adhesive-applying lifting frame (43), and the lid-folding drive component (32) and the primary lid-closing cylinder (33) are connected. The folding rod (31) is connected to the folding drive (32), which causes the initial folding rod (31) to push the large box cover to flip. The secondary closing cylinder (33) is set on the adhesive lifting frame (43). The secondary closing cylinder (33) is inclined and located on the side where the crease of the large box cover is located. The secondary closing cylinder (33) is used to push the large box cover to close on the small box cover after the initial folding rod (31) flips the large box cover to a predetermined angle.

9. The side-sealing box equipment according to claim 8, characterized in that: The folding drive component (32) includes a folding base (321), a folding rail (322), a folding slide (323), and a folding screw (324); the folding base (321) is fixedly mounted on the adhesive application lifting frame (43); the folding rail (322) is slidably connected to the folding base (321), and the sliding direction is parallel to the length direction of the folding rail (322). Part of the folding rail (322) is located in the folding base (321), and another part is located outside the folding base (321); the folding slide (323) 323) Fixedly connected to the folding cover moving rail (322), the folding cover slide (323) is connected to the initial folding cover rod (31); the folding cover screw (324) is rotatably mounted on the adhesive lifting frame (43), the folding cover screw (324) is threadedly connected to the folding cover slide (323), so that the folding cover slide (323) has a push rod state and a press rod state. In the push rod state, the initial folding cover rod (31) makes one reciprocating motion. In the press rod state, the initial folding cover rod (31) stops at different positions and abuts against different positions of the large box cover.

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