A roll laminating apparatus for a box

Abstract

This invention specifically relates to a roll-pressing film coating device for box shells, belonging to the field of film coating equipment technology. It includes a conveyor frame for transporting the box shell, side supports fixed in the middle of the left and right sides of the conveyor frame, a film feeding roller frame installed between the two side supports, and guide rollers, an elastic film roller assembly, a film cutting knife assembly, an electric gripper, and a bidirectional film roller assembly installed sequentially from front to back on the two side supports. The elastic film roller assembly initially elastically rolls and adheres the film to the upper surface of the box shell on the conveyor frame. After the film is cut by the film cutting knife assembly while adhered to the box shell, the front and rear roller frames of the bidirectional film roller assembly can be combined to perform a secondary elastic bidirectional roll pressing on the film on the box shell, ensuring that the film extends evenly from the center to both sides. This not only improves the coating effect but also provides a wide coverage area, adapting to box shells of different heights and sizes.

Description

Technical Field

[0001] This invention specifically relates to a roller-type coating equipment for box shells, and pertains to the field of coating equipment technology. Background Technology

[0002] In the production process of the box shell, after the box shell is formed, its upper surface is usually coated with film on the conveyor line. After coating, the coated box shell is picked up by a robot and stacked on an outer frame for later transportation, storage, and end-user retrieval. The coating process effectively prevents the upper surface of the box shell from being scratched by friction or collision during stacking and transportation, thus protecting the appearance quality of the box shell and improving the product yield and market competitiveness. However, in existing technologies, the lamination of box shells mostly relies on manual operation, or simply involves installing a feeding frame and pressure rollers on a conveyor to perform a basic film application on the box shells during transport. This traditional manual operation method has significant drawbacks. On the one hand, manual lamination has low efficiency and cannot meet the capacity requirements of large-scale automated production. On the other hand, the single pressure roller structure is insufficient to evenly and effectively roll and adhere the film to the upper surface of the box shell, resulting in a low lamination success rate and problems such as bubbles, wrinkles, or poor adhesion, which seriously affect lamination quality and production efficiency. In addition, existing lamination equipment has a relatively simple structure and single function, lacking adaptability to box shells of different specifications and sizes. This means that the overall efficiency and flexibility of the equipment need further improvement. Therefore, there is an urgent need to propose a roller-type lamination device for box shells to improve upon the above problems. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this invention is to provide a roller-pressed film coating device for box shells to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a roll-pressed film coating device for box shells, comprising a conveyor frame for conveying box shells, side supports fixed in the middle of the left and right sides of the conveyor frame, a film feeding roller frame installed between the two side supports, and guide rollers, elastic film roller assembly, film cutting knife assembly, electric gripper and bidirectional film roller assembly installed sequentially from front to back on the two side supports. The guide roller is used to turn and transport the film from the film feeding roller frame to the elastic roller film group, and the elastic roller film group presses the film onto the upper side of the box shell in one elastic roller pressing. The film on the rear side of the box shell is cut by the film cutting knife group under the clamping of two electric grippers. The bidirectional roller film group presses down to perform a second bidirectional roller pressing on the film on the upper side of the box shell. The bidirectional roller film assembly includes a vertical telescopic rod and a vertical guide frame installed on the upper side of two side supports. A lifting slide plate is slidably arranged in the middle of the vertical guide frame, and a support shaft is arranged between the two lifting slide plates. A front roller frame and a rear roller frame are movably sleeved in the middle of the support shaft. The front roller frame and the rear roller frame are arranged in a herringbone shape, and the upper arms of the front roller frame and the rear roller frame are elastically connected. When the lifting slide plate drives the support shaft to move downward, the front roller frame and the rear roller frame abut against the upper side of the box shell and rotate back and forth respectively, pressing the film sheet onto the box shell with elastic front and rear rollers. The front roller frame and the rear roller frame are respectively provided with air blowing structures on both sides, which blow the two sides of the film downward and make them droop while the front roller frame and the rear roller frame are rolling the film. The support shaft is equipped with push screws on both sides for pushing the front roller frame and the rear roller frame to move left and right.

[0005] In a further improved design, the front roller frame and the rear roller frame have the same structure. The front roller frame includes two spaced-apart side support rods, and the top of the side support rods is fixed with a sleeve, which is rotatably sleeved on the support shaft. A rotating rod is rotatably installed on the bottom of the side support rods on opposite sides, and a sponge roller is rotatably sleeved on the rotating rod. The sponge roller is adapted to roll the diaphragm on the upper side of the housing. Multiple slots are opened in the middle of the side support rods, and an elastic rope is elastically bound between the slots of the side support rods of the front roller frame and the rear roller frame. The outer side of the side support rods is locked with a locking plate for limiting the elastic rope inside the slot.

[0006] In a further improved embodiment, the support shaft includes a first shaft and a second shaft that are rotatably connected to each other, and the first shaft and the second shaft are provided with a rotatable insertion hole and a insertion shaft that are rotatably connected to each other at opposite ends.

[0007] In a further improved design, transmission threads are installed on one side of both the first and second shafts. The two push screws are respectively installed on the first and second shafts and are threadedly connected to the transmission threads of the first and second shafts. A guide rod is installed between the two lifting slides. The guide rod is located above the first and second shafts and passes through the upper side of the push screws. A drive motor for driving the first and second shafts is installed on the outer side of the two lifting slides.

[0008] A further improved scheme includes an air pump installed in the middle of the guide rod, and multiple interconnected air holes opened on one side and bottom of the side support rod. The air pump is connected to the air holes through an air pipe, and the air holes opened on the front roller frame side and the air holes opened on the rear roller frame side are distributed opposite each other.

[0009] In a further improved design, a front clip and a rear clip are fixed to the front and rear sides of the sleeve, respectively. The rear clip of the front roller frame is adjacent to and clipped on one side of the guide rod, and the front clip of the front roller frame is away from the guide rod. The front clip of the rear roller frame is adjacent to and clipped on one side of the guide rod, and the rear clip of the rear roller frame is away from the guide rod. After the front roller frame and the rear roller frame are pressed down, they move backward and forward in a V-shape to the front and rear sides, respectively.

[0010] A further improved scheme includes two electrically operated telescopic rods vertically mounted on two side supports and two mounting boxes that are lifted and mounted on the side supports. A slide rail is fixed on one side of each side support, and a slider that is slidably connected to the slide rail is installed on one side of each mounting box. The telescopic ends of the two electrically operated telescopic rods are respectively connected to the top of the two mounting boxes, and a sliding opening is vertically opened on the opposite side of each mounting box. A lifting block is slidably arranged inside each mounting box. An elastic pressure roller is movably arranged between the two mounting boxes. The two ends of the elastic pressure roller pass through the sliding opening and are rotatably mounted on the lifting block. A spring is provided inside each mounting box, and the spring elastically presses against the upper side of the lifting block.

[0011] In a further improved design, the slicing blade assembly includes a transmission screw and a guide rod horizontally mounted between two side supports. A moving block is respectively provided through the middle of the transmission screw and the guide rod. The transmission screw is threadedly connected to the moving block, and a slicing blade is installed at the bottom of the moving block. A rotary motor for driving the transmission screw to rotate is installed on the side supports.

[0012] In a further improved design, multiple opposing correction push rods are installed on the rear side of the conveyor frame.

[0013] By adopting the above technical solution, the present invention has the following advantages: This invention features a simple and ingenious structure. An elastic roller film assembly initially elastically rolls and adheres the film to the upper surface of the box shell on the conveyor frame. After the film is cut by the dicing knife assembly, the front and rear roller frames of the bidirectional roller film assembly perform a secondary elastic bidirectional rolling press on the film, ensuring that the film extends evenly from the center to both sides. This not only improves the coating effect but also provides a wide coverage area suitable for box shells of different heights and sizes. Furthermore, the use of sponge rollers at the bottom of the front and rear roller frames allows for better adaptation to the uneven surfaces of the box shell's upper surface. Furthermore, the elastic connection between the front and rear roller frames allows them to adapt to housings of different thicknesses and sizes, ensuring consistent pressure on the diaphragm and reducing impact and vibration during the rolling process. When the front and rear roller frames encounter uneven areas, they can automatically adjust through elastic deformation. In addition, the front and rear roller frames can be used in conjunction with an air blowing structure to simultaneously roll the diaphragm and blow the two sides of the diaphragm downwards, ensuring that the edges of the diaphragm naturally droop, forming a neat covering effect and preventing the edges of the diaphragm from curling up after rolling. In addition, the use of a specially designed support shaft in conjunction with the drive solenoid allows for precise control of the left and right positions of the front and rear roller frames, thus flexibly adapting to the specific position of the box shell during conveying. Therefore, through the coordinated cooperation of various components of the equipment, automated continuous film coating production is achieved, improving the film coating effect and work efficiency of the box shell. Moreover, the overall equipment has good adaptability and a relatively flexible and stable structure. Attached Figure Description

[0014] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram of the side support and film feeding roller frame of the present invention; Figure 4 This is a schematic diagram showing the positional structure of the side support and the electric gripper of the present invention; Figure 5 This is a schematic diagram of the structure of the side support and elastic roller film assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the elastic roller film assembly of the present invention; Figure 7 This is a schematic diagram of the bidirectional roller film assembly of the present invention; Figure 8 This is a schematic diagram of the structure of the front roller frame and the rear roller frame of the present invention; Figure 9 For the present invention Figure 8 A structural diagram from another perspective; Figure 10 This is a schematic diagram of the front and rear cards of the present invention; Figure 11 This is an exploded structural diagram of the support shaft of the present invention; In the diagram: 1. Conveyor frame; 2. Side support; 3. Film feeding roller frame; 4. Guide roller; 5. Elastic film roller assembly; 51. Electric telescopic rod; 52. Mounting box; 521. Sliding port; 522. Lifting block; 523. Slide rail; 53. Elastic pressure roller; 54. Spring; 55. Electric gripper; 6. Film cutting knife assembly; 7. Transmission screw; 71. Guide rod; 72. Moving block; 73. Cutting knife; 74. Bidirectional film roller assembly; 8. Telescopic rod; 80. Vertical guide frame; 81. Lifting slide plate; 82. Support shaft; 83. ... 831, 832, 833, 834, 835, 836, 84, 84, 84, 840, 841, 8411, 8412, 842, 843, 845, 846, 847, 848, 85, 86, 87, 88, 9, 88, 89, 80, 86, 87, 88, 9, 89, 80, 81, 82, 83, 84, 84, 85, 86, 87, 88, 89, 9, 80, 81, 84, 84, 85, 86, 87, 88, 9, 89, 80, 81, 84 ... Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0016] like Figures 1-11 As shown, this invention provides a roll-pressing film coating device for a box shell, including a conveyor frame 1 for conveying the box shell, side supports 2 fixed in the middle of the left and right sides of the conveyor frame 1, a film feeding roller frame 3 installed between the two side supports 2, and guide rollers 4, elastic film roller assembly 5, film cutting knife assembly 7, electric grippers 6, and bidirectional film roller assembly 8 installed sequentially from front to back on the two side supports 2. The conveyor frame 1 is the basic load-bearing structure of the entire device, used to support and convey the box shell to move in a predetermined direction. The guide rollers 4 have smooth surfaces, which can reduce the frictional resistance of the film during passage and ensure smooth film conveying. The guide rollers 4 are used to turn and convey the film from the film feeding roller frame 3 to the elastic film roller assembly 5, and the elastic film roller assembly 5 elastically rolls and coats the film onto the upper side of the box shell. The film on the rear side of the box shell is coated with two... Under the clamping of the electric gripper 6, the film is cut by the dicing knife group 7, and the bidirectional roller film group 8 presses down to perform secondary bidirectional roller pressing and film coating on the film on the upper side of the box shell. Specifically, the bidirectional roller film group 8 includes a vertical telescopic rod 80 and a vertical guide frame 81 installed on the upper side of the two side supports 2. The vertical guide frame 81 has a lifting slide plate 82 that slides up and down in the middle, and a support shaft 83 is provided between the two lifting slide plates 82. The support shaft 83 has a front roller frame 84 and a rear roller frame 85 that are staggered and distributed in the middle. The front roller frame 84 and the rear roller frame 85 are distributed in a herringbone shape, and the upper arms of the front roller frame 84 and the rear roller frame 85 are elastically connected. When the lifting slide plate 82 drives the support shaft 83 to move downward, the front roller frame 84 and the rear roller frame 85 abut against the upper side of the box shell and rotate back and forth respectively, pressing the film onto the box shell with elastic rollers.

[0017] In the above technical solution, the front roller frame 84 and the rear roller frame 85 have the same structure. The front roller frame 84 includes two spaced side support rods 840, and the top of the side support rods 840 is fixed with a sleeve 841, which is rotatably sleeved on the support shaft 83 through the sleeve 841. The front roller frame 84 and the rear roller frame 85 are rotatably sleeved on the support shaft 83 through the sleeve 841, and can flexibly rotate around the shaft to adapt to the change of the surface angle of the housing. When the lifting slide moves the support shaft 83 downward, the two roller frames abut against the upper side of the housing, and the sponge roller 843 rotates under the action of friction to roll the film. A rotating rod 842 is rotatably mounted on one side of the bottom of the side support rod 840, and a sponge roller 843 is rotatably sleeved on the rotating rod 842. The sponge roller 843 is adapted to roll the diaphragm on the upper side of the housing. Multiple slots 845 are opened in the middle of the side support rod 840, and an elastic rope 846 is elastically tightened between the slots 845 of the side support rod 840 of the front roller frame 84 and the rear roller frame 85. The multiple slots 845 in the middle of the side support rod 840 cooperate with the elastic rope 846 to keep the front roller frame 84 and the rear roller frame 85 elastically connected. When the rolling process encounters the surface of the housing, When the surface is uneven, the elastic rope 846 undergoes elastic deformation, automatically adjusting the distance and pressure between the two roller frames to ensure that the pressure of the sponge roller 843 on the film is always uniform and stable, achieving a high-quality coating effect without wrinkles or bubbles. In addition, the outer locking of the side support rod 840 has a locking plate 847 used to limit the elastic rope 846 inside the slot 845. The locking plate 847 limits the elastic rope 846 inside the slot 845, ensuring that the elastic rope 846 will not fall off or shift during long-term use, improving the reliability of equipment operation, and also facilitating later disassembly and replacement.

[0018] The support shaft 83 has push screws 86 installed on both sides for pushing the front roller frame 84 and the rear roller frame 85 to move left and right. The support shaft 83 includes a first shaft 831 and a second shaft 832 that are rotatably connected to each other. The first shaft 831 and the second shaft 832 have rotatably connected rotating insertion holes 836 and insertion shafts 835 at opposite ends. That is to say, the first shaft 831 and the second shaft 832 not only support the rotation of the front roller frame 84 and the rear roller frame 85, but also allow the two shafts to rotate flexibly relative to each other through the cooperation of the rotating insertion holes 836 and the insertion shafts 835. This facilitates the disassembly and replacement of the first shaft 831 and the second shaft 832 and other accessories, and also realizes a split transmission structure, because the first shaft 831 and the second shaft 832 are both installed with transmission threads 833 on one side, and the two push screws 86 are respectively installed on the first shaft 831 and the second shaft 832. A drive motor 834 for driving the first shaft 831 and the second shaft 832 is installed on the outer side of the two lifting slide plates 82, respectively. In this way, the drive screw tube 86 is driven to move axially through the drive screw tube 833, thereby driving the front roller frame 84 and the rear roller frame 85 to achieve left and right displacement adjustment. A guide rod 87 is installed between the two lifting slide plates 82. The guide rod 87 is located above the first shaft 831 and the second shaft 832 and passes through the upper side of the drive screw tube 86. The guide rod 87 provides stable guidance support for the drive screw tube 86 to prevent it from swaying or jamming during movement, ensuring the accuracy and stability of the displacement of the front roller frame 84 and the rear roller frame 85, and realizing precise control of the rolling position and pressure.

[0019] In this embodiment, air blowing structures are respectively provided on both sides of the front roller frame 84 and the rear roller frame 85. While the front roller frame 84 and the rear roller frame 85 are rolling the film, the two sides of the film are blown downward and hang down naturally. The air blowing structure includes an air pump 88 installed in the middle of the guide rod 87, and multiple air holes 848 connected to each other on one side and the bottom of the side support rod 840. The air pump 88 is connected to the air holes 848 through an air pipe. The air holes 848 on one side of the front roller frame 84 and the air holes 848 on one side of the rear roller frame 85 are distributed opposite each other. Therefore, the air blowing structures on both sides of the front roller frame 84 and the rear roller frame 85 spray air synchronously. While the sponge roller 843 is rolling the film, the airflow blows the two sides of the film obliquely downward from the air holes 848 on one side of the side support rod 840, so that it hangs down naturally and sticks tightly to the side of the box shell, forming a complete wrapping shape.

[0020] Furthermore, a front clip 8411 and a rear clip 8412 are respectively fixed on the front and rear sides of the sleeve 841. The rear clip 8412 of the front roller frame 84 is adjacent to and clipped on one side of the guide rod 87, and the front clip 8411 of the front roller frame 84 is away from the guide rod 87. The front clip 8411 of the rear roller frame 85 is adjacent to and clipped on one side of the guide rod 87, and the rear clip 8412 of the rear roller frame 85 is away from the guide rod 87. After the front roller frame 84 and the rear roller frame 85 are pressed down, they move backward and forward in a V-shape respectively. In this way, the front clip 8411 and the rear clip 8412 can further ensure that the front roller frame 84 and the rear roller frame 85 move in a V-shape, thereby avoiding the failure of rolling due to the same side displacement of the front roller frame 84 and the rear roller frame 85.

[0021] In this embodiment, the elastic roller film assembly 5 includes two electrically operated telescopic rods 51 vertically mounted on two side supports 2 and two mounting boxes 52 vertically mounted on the side supports 2. A slide rail 53 is fixed on one side of the side support 2, and a slider that is slidably connected to the slide rail 53 is mounted on one side of the mounting box 52. The telescopic ends of the two electrically operated telescopic rods 51 are respectively connected to the top of the two mounting boxes 52, and the two mounting boxes 52 have vertically opened sliding openings 521 on opposite sides. A lifting block 522 is slidably arranged inside the mounting box 52. An elastic pressure roller 54 is movably arranged between the two mounting boxes 52. The two ends of the elastic pressure roller 54 pass through the sliding openings 521 and are rotatably mounted on the lifting blocks 521. On block 522, a spring 55 is provided inside the mounting box 52. The spring 55 elastically presses against the upper side of the lifting block 522. The electric telescopic rod 51 extends and pushes the mounting box 52 down. The mounting box 52 slides down along the slide rail 53 on the side bracket 2 via the slider. The lifting block 522 descends synchronously inside the mounting box 52, driving the two ends of the elastic pressure roller 54 to pass through the sliding opening 521 and move down, finally pressing against the diaphragm surface on the upper side of the housing. The spring 55 is compressed to generate elastic support force, so that the elastic pressure roller 54 applies appropriate and stable pressure to the diaphragm. When the housing moves forward, the elastic pressure roller 54 rotates under the action of friction, pressing the diaphragm evenly onto the surface of the housing.

[0022] The dicing knife assembly 7 includes a transmission screw 71 and a guide rod 72 horizontally installed between two side supports 2. A moving block 73 is respectively provided through the middle of the transmission screw 71 and the guide rod 72. The transmission screw 71 is threadedly connected to the moving block 73, and a dicing knife 74 is installed at the bottom of the moving block 73. The side supports 2 are equipped with a rotating motor for driving the transmission screw 71 to rotate. By rotating the transmission screw 71 through the rotating motor, the dicing knife 74 on the moving block 73 can be moved left and right to cut the film.

[0023] In a further improved design, multiple opposing correction push rods 9 are installed on the rear side of the conveyor frame 1. The correction push rods 9 are used to push the position of the correction box housing and further press the edge of the diaphragm on the side of the box housing.

[0024] In a more specific implementation, the present invention includes the following steps when in use: The conveyor frame 1 transports the housing forward. Since the film feeding roller frame 3 is installed between the two side supports 2 to hold the rolled film, after the film is drawn out from the film feeding roller frame 3, the guide roller 4 guides the film drawn out from the film feeding roller frame 3, changing the conveying direction and smoothly transitioning the film to the elastic roller film assembly 5. At this time, the elastic roller film assembly 5 operates, and the electric telescopic rod 51 extends, pushing the mounting box 52 downward. The mounting box 52 slides downward along the slide rail 53 via a slider, causing the lifting block 522 to descend. When the lifting block 522 descends, the shaft ends of the elastic pressure roller 54 pass through the sliding port 521 and move downward, eventually pressing the diaphragm onto the upper surface of the housing. At this time, the spring 55 is compressed, providing elastic support force, so that the elastic pressure roller 54 applies appropriate elastic pressure to the diaphragm. When the housing moves forward, the elastic pressure roller 54 rotates under the action of friction, pressing the diaphragm onto the upper surface of the housing once. Due to the elastic compensation effect of the spring 55, even if there are slight irregularities on the surface of the housing, the elastic pressure roller 54 can maintain a stable film covering pressure, ensuring the consistency of film covering quality. When it is necessary to cut the diaphragm on the rear side of the housing, the two electric grippers 6 clamp the diaphragm and fix it. The clamping position of the electric grippers 6 is located at the junction of the rear end of the housing and the diaphragm to be cut. By clamping the diaphragm, a stable cutting environment is provided for the cutting operation of the dicing knife group 7, preventing the diaphragm from shifting or deforming during the cutting process. Then the dicing knife group 7 works. The rotating motor on the side bracket 2 drives the transmission screw 71 to rotate. The transmission screw 71 is threadedly connected to the moving block 73. When the transmission screw 71 rotates, the moving block 73 moves in the lateral direction along the guide rod 72. The dicing knife 74 at the bottom of the moving block 73 moves accordingly to cut the diaphragm clamped by the electric grippers 6 in the lateral direction. After the cutting is completed, the rotating motor reverses, and the moving block 73 and the dicing knife 74 are reset to prepare for the next cutting operation. At this point, the housing continues to be conveyed forward, stopping below the bidirectional roller film assembly 8. The vertical telescopic rod 80 retracts, pulling the lifting slide plate 82 down along the vertical guide frame 81. The lifting slide plate 82 drives the support shaft 83 down, which in turn drives the front roller frame 84 and the rear roller frame 85 down, allowing the sponge rollers 843 of the front and rear roller frames 84 and 85 to gradually approach the upper surface of the housing. When the front and rear roller frames 84 and 85 abut against the upper side of the housing, due to their herringbone shape and the limiting effect of the front clips 8411 and 8412 secured on one side of the guide rod 87, the front and rear roller frames 84 and 85 shift forward and backward respectively, opening into a herringbone shape, with the included angle between them... The front roller frame 84's sponge roller 843 rolls the film from the middle of the housing towards the front end, while the rear roller frame 85's sponge roller 843 rolls the film from the middle of the housing towards the rear end. The two sponge rollers 843 roll outwards synchronously, evenly pressing the film onto the upper surface of the housing from the middle to both ends. The sponge rollers 843 can better adapt to the uneven surface of the housing, thus pressing the film onto the surface of the housing better. Furthermore, since the side support rods 840 between the front roller frame 84 and the rear roller frame 85 are elastically connected by elastic ropes 846, if the surface of the housing is uneven or the film thickness changes during the rolling process, the elastic ropes 846 can elastically deform to automatically adjust the distance and pressure between the two roller frames, ensuring that the coating pressure remains stable at all times. At the same time, during the rolling process, the air pump 88 is started synchronously, and the gas is ejected from the air hole 848 of the side support rod 840 through the air pipe. The airflow ejected from the air holes 848 on both sides of the front roller frame 84 and the rear roller frame 85 blows the two sides of the diaphragm downward and makes it hang down naturally, so that it is close to the side surface of the box shell. After the secondary rolling is completed, the vertical telescopic rod 80 extends, the lifting slide plate 82 drives the support shaft 83 to rise, and the front roller frame 84 and the rear roller frame 85 are reset under the tension of the elastic rope 846, allowing the two sponge rollers 843 to roll again from the front and rear sides of the box shell towards the center, significantly improving the adhesion and quality of the film coating, until the sponge rollers 843 are completely detached from the box shell, ready to coat the next box shell. Finally, the conveyor frame 1 transports the box shell that has been rolled twice to between the three correction push rods 9. By pushing the correction push rods 9, the box shell can not only be pushed and corrected to the set position to facilitate the subsequent material handling by the robot, but also the film on the side of the box shell can be further pressed to prevent it from tilting upwards.

[0025] It should be noted that the roll-pressing film coating equipment for the housing of the present invention mainly improves the above-mentioned structure. The functions, components and structures not mentioned can be implemented by using the components and structures in the prior art that can achieve the corresponding functions.

[0026] The above embodiments illustrate and describe the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A roller-pressing film coating device for a box shell, characterized in that, It includes a conveyor frame (1) for the conveyor box housing, side supports (2) fixed in the middle of the left and right sides of the conveyor frame (1), film feeding roller frame (3) installed between the two side supports (2), and guide rollers (4) installed in sequence from front to back on the two side supports (2), elastic film roller assembly (5), film cutting knife assembly (7), electric gripper (6) and bidirectional film roller assembly (8). The guide roller (4) is used to turn and transport the film from the film feeding roller frame (3) to the elastic roller film group (5), and the elastic roller film group (5) applies the film to the upper side of the box shell in one elastic roller pressing. The film on the rear side of the box shell is cut by the film cutting knife group (7) under the clamping of two electric grippers (6). The bidirectional roller film group (8) presses down to apply the film to the upper side of the box shell in a second bidirectional roller pressing. The bidirectional roller film assembly (8) includes a vertical telescopic rod (80) and a vertical guide frame (81) installed on the upper side of two side supports (2). A lifting slide plate (82) is slidably arranged in the middle of the vertical guide frame (81), and a support shaft (83) is arranged between the two lifting slide plates (82). A front roller frame (84) and a rear roller frame (85) are movably sleeved in the middle of the support shaft (83) and are staggered. The front roller frame (84) and the rear roller frame (85) are arranged in a herringbone shape, and the upper arms of the front roller frame (84) and the rear roller frame (85) are elastically connected. When the lifting slide plate (82) drives the support shaft (83) to move downward, the front roller frame (84) and the rear roller frame (85) abut against the upper side of the box shell and rotate back and forth respectively, pressing the film sheet on the box shell with elastic rollers. Air blowing structures are provided on both sides of the front roller frame (84) and the rear roller frame (85), so that while the front roller frame (84) and the rear roller frame (85) are rolling the film, the two sides of the film are blown downward and droop. The support shaft (83) is equipped with push screws (86) on both sides for pushing the front roller frame (84) and the rear roller frame (85) to move left and right.

2. The roll-pressing film coating equipment for a box shell according to claim 1, characterized in that, The front roller frame (84) and the rear roller frame (85) have the same structure. The front roller frame (84) includes two spaced side support rods (840), and the top of the side support rod (840) is fixed with a sleeve (841), which is rotatably sleeved on the support shaft (83) through the sleeve (841). The bottom of the side support rod (840) is rotatably mounted with a rotating rod (842) on one side, and a sponge roller (843) is rotatably sleeved on the rotating rod (842). The sponge roller (843) is adapted to roll the diaphragm on the upper side of the housing. The side support rod (840) has multiple slots (845) in the middle, and an elastic rope (846) is elastically bound between the slots (845) of the side support rods (840) of the front roller frame (84) and the rear roller frame (85). The outer side of the side support rod (840) has a locking plate (847) for limiting the elastic rope (846) to the inside of the slot (845).

3. The roll-pressing film coating equipment for a box shell according to claim 2, characterized in that, The support shaft (83) includes a first shaft (831) and a second shaft (832) that are rotatably connected to each other. The first shaft (831) and the second shaft (832) are provided with a rotatable insertion hole (836) and an insertion shaft (835) that are rotatably connected to each other at opposite ends.

4. The roll-pressing film coating equipment for a box shell according to claim 3, characterized in that, The first shaft (831) and the second shaft (832) are each equipped with a transmission thread (833) on one side. The two push screws (86) are respectively installed on the first shaft (831) and the second shaft (832) and are threadedly connected to the transmission threads (833) of the first shaft (831) and the second shaft (832). A guide rod (87) is installed between the two lifting slides (82). The guide rod (87) is located above the first shaft (831) and the second shaft (832) and passes through the upper side of the push screw (86). A drive motor (834) for driving the first shaft (831) and the second shaft (832) is respectively installed on the outside of the two lifting slides (82).

5. The roll-pressing film coating equipment for a box shell according to claim 4, characterized in that, The air blowing structure includes an air pump (88) installed in the middle of the guide rod (87) and a plurality of interconnected air holes (848) opened on one side and bottom of the side support rod (840). The air pump (88) is connected to the air holes (848) through an air pipe. The air holes (848) opened on one side of the front roller frame (84) and the air holes (848) opened on one side of the rear roller frame (85) are distributed in opposite directions.

6. The roll-pressing film coating equipment for a box shell according to claim 5, characterized in that, The sleeve (841) is also fixed with a front clip (8411) and a rear clip (8412) on the front and rear sides respectively. The rear clip (8412) of the front roller frame (84) is adjacent to and clipped on one side of the guide rod (87), and the front clip (8411) of the front roller frame (84) is away from the guide rod (87). The front clip (8411) of the rear roller frame (85) is adjacent to and clipped on one side of the guide rod (87), and the rear clip (8412) of the rear roller frame (85) is away from the guide rod (87). After the front roller frame (84) and the rear roller frame (85) are pressed down, they move backward and forward in a V-shape respectively.

7. A roll-pressing film coating device for a box shell according to claim 6, characterized in that, The elastic roller film assembly (5) includes two electric telescopic rods (51) vertically mounted on two side supports (2) and two mounting boxes (52) vertically mounted on the side supports (2). A slide rail (53) is fixed on one side of the side support (2), and a slider that is slidably connected to the slide rail (53) is installed on one side of the mounting box (52). The telescopic ends of the two electric telescopic rods (51) are respectively connected to the top of the two mounting boxes (52), and a sliding opening (521) is vertically opened on the opposite side of the two mounting boxes (52). A lifting block (522) is slidably arranged inside the mounting box (52). An elastic pressure roller (54) is movably arranged between the two mounting boxes (52). The two ends of the elastic pressure roller (54) pass through the sliding opening (521) and are rotatably mounted on the lifting block (522). A spring (55) is provided inside the mounting box (52), and the spring (55) elastically presses against the upper side of the lifting block (522).

8. A roll-pressing film coating device for a box shell according to claim 7, characterized in that, The slicing knife assembly (7) includes a transmission screw (71) and a guide rod (72) installed laterally between two side supports (2). A moving block (73) is respectively provided through the middle of the transmission screw (71) and the guide rod (72). The transmission screw (71) and the moving block (73) are threadedly connected, and a slicing knife (74) is installed at the bottom of the moving block (73). The side support (2) is equipped with a rotating motor for driving the transmission screw (71) to rotate.

9. A roll-pressing film coating device for a box shell according to claim 1, characterized in that, Multiple opposing correction push rods (9) are installed on the rear side of the conveyor frame (1).

Images