Automatic bag-in-box metal wire knotting machine

Abstract

The application provides a paper box inner bag metal wire automatic binding machine, which comprises a main frame, the inside of the main frame is provided with a lifting roller conveying belt, the lifting roller conveying belt is used for driving the paper box to move and lift; the side of the main frame is provided with a second lifting mechanism, the second lifting mechanism is connected with a film arranging mechanism; the film arranging mechanism comprises a back plate connected with the second lifting mechanism, the side of the back plate is connected with two fixed arms through a moving assembly; the moving assembly is used for bringing the two fixed arms close to each other or separate, the end of each fixed arm is connected with a film arranging roller; the inside of the main frame is connected with a lifting frame through a first lifting mechanism; the lifting frame is provided with a film pulling mechanism and a binding mechanism; the film arranging mechanism can make the bag opening part of the inner bag form a "one" structure, so that the inner bag tends to be neat and flat, and imitates the hand binding mode, which is not only beneficial to discharging the air in the inner bag, but also will not damage the inner bag.

Description

Technical Field

[0001] This invention relates to the field of sealing machine technology, specifically to an automatic sealing machine for inner bags of cartons using metal wire. Background Technology

[0002] Some materials need to be packaged after processing. Cardboard boxes are a traditional and widely used packaging equipment. In order to prevent the packaged items from absorbing odors or deteriorating, an inner film bag is usually placed inside the cardboard box, and the opening of the inner film bag is tied. Then the cardboard box is sealed to complete the packaging.

[0003] The inner bag is usually tied with a sealing machine. The sealing machine first uses a suction device to lift the inner bag by means of four blowers. Then, a mechanical claw grabs the bag at a certain distance from the bag opening, reducing the area of ​​the bag opening that needs to be tied, which makes it easier for the sealing machine to tie it.

[0004] This type of binding usually involves binding close to the bag opening, making it difficult to expel air from the inner bag. It also facilitates the gripping of robotic arms, resulting in messy binding and a high risk of incomplete binding, which affects the sealing effect. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an automatic metal thread sealing machine for inner bags of cartons. This machine can solve the problems of conventional binding methods where the distance between the binding point and the bag opening is too close, making it difficult to expel air from the inner bag. Furthermore, the binding method is often messy and prone to incomplete binding, which affects the sealing effect.

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

[0007] This invention is achieved through the following technical solution: an automatic metal thread sealing machine for inner bags of cardboard boxes.

[0008] The system includes a main frame, inside which is a lifting roller conveyor belt used to move and lift cartons; a second lifting mechanism is provided on the side of the main frame, which is connected to a film-feeding mechanism; the film-feeding mechanism includes a back plate connected to the second lifting mechanism, and two fixed arms are connected to the side of the back plate via a moving component; the moving component is used to move the two fixed arms closer together or apart, and each fixed arm is connected to a film-feeding roller at its end;

[0009] The main frame is connected to a lifting frame via a first lifting mechanism; the lifting frame is equipped with a film-splitting mechanism and a sealing mechanism. The film-splitting mechanism is used to reduce the area of ​​the inner bag near the bag opening; the sealing mechanism is used to seal the reduced area of ​​the bag opening.

[0010] Furthermore, the moving component includes a second drive wheel, a second conveyor belt, a second motor, a fourth slider, and a fourth slide rail; the second motor and the second drive wheel are provided on the side of the back plate, and the output shaft of the second motor and the second drive wheel are connected by the second conveyor belt; fixed arms are respectively connected to both sides of the second conveyor belt; the fourth slide rail is fixed on the side of the back plate, and the fourth slider is fixed on the side of the fixed arm; the fourth slider is slidably connected to the fourth slide rail.

[0011] Furthermore, the second lifting mechanism includes a sixth slide rail, a sixth slider, a toothed plate, a gear, and a third motor. The sixth slide rail is fixed to the side of the main frame, and the side of the sixth slide rail is slidably connected to the sixth slider. The sixth slider is connected to a back plate, and the side of the back plate is connected to the third motor. The third motor is connected to a gear, and the gear meshes with the toothed plate. The toothed plate is fixed to the side of the main frame.

[0012] Furthermore, the film-forming mechanism has two symmetrical parts, and the film-forming mechanism includes an extrusion plate, a second slider, a second cylinder, a second slide rail, and a baffle. The second cylinder is fixed to the side of the lifting frame, and the piston rod of the second cylinder is connected to the extrusion plate. The end of the extrusion plate is connected to the second slider, and the second slider is slidably connected to the second slide rail. The second slide rail is fixed to the inside of the lifting frame. The two ends of the side of the extrusion plate are connected to baffles with an "L" shape.

[0013] Furthermore, it also includes a forming mechanism, which comprises a forming block, a seventh slider, a third conveyor belt, a third transmission wheel, a fourth motor, and a seventh slide rail. The fourth motor and the third transmission wheel are respectively provided on both sides of the lifting frame. The output shaft of the fourth motor and the third transmission wheel are connected by the third conveyor belt. Two seventh sliders are respectively connected to both sides of the third conveyor belt, and the end of each seventh slider is connected to a forming block. A seventh slide rail is provided between the third transmission wheel and the fourth motor, and the seventh slide rail is slidably connected to the seventh slider. The forming block includes a vertical plate and two "L"-shaped parallel plates, and the two "L"-shaped parallel plates are fixedly connected to the vertical plate.

[0014] Furthermore, the lifting roller conveyor belt includes a third slide rail, a first drive wheel, a third slider, a connecting plate, a first conveyor belt, a second conveyor belt body, and a first motor. A connecting plate is fixed to the side of the second conveyor belt body, and a third slider is fixed to the side of the connecting plate. The third slider is slidably connected to the third slide rail, and the third slide rail is fixed to the side of the main frame. The side of the main frame is connected to the first motor and the first drive wheel, and the output shaft of the first motor is connected to the first drive wheel through the first conveyor belt. The side of the first conveyor belt is connected to the connecting plate.

[0015] Furthermore, the side of the lifting roller conveyor belt is provided with a positioning mechanism, which includes a baffle, a fifth cylinder, a support plate and a limiting plate. The support plate is installed on the side of the lifting roller conveyor belt, and the top of the support plate is provided with a fifth cylinder. The piston rod of the fifth cylinder is connected to an "L"-shaped limiting plate, and the end of the limiting plate is bolted to a baffle.

[0016] Furthermore, the lifting roller conveyor belt has symmetrically arranged docking roller conveyor belts at both ends. The docking roller conveyor belt includes a support column, a first conveyor belt body, a side baffle, and a screw. The first conveyor belt body has support columns on both sides, and the support columns are threadedly connected to the screw. The end of the screw is connected to the side baffle, and the side baffle is a bent plate structure.

[0017] Furthermore, it also includes a film suction mechanism, of which two film suction mechanisms are provided; the film suction mechanism includes a fourth cylinder, a fifth slide rail, a fifth slider and a blower; the fourth cylinder is connected to the lifting frame, and the piston rod of the fourth cylinder is connected to the blower; the bottom end of the lifting frame is provided with a fifth slide rail, and the side of the blower is provided with a fifth slider; the fifth slider is slidably connected to the fifth slide rail.

[0018] Furthermore, it also includes a box-supporting mechanism, which includes a third cylinder, a box-supporting plate, and a column. The top of the main frame is fixed with a column, and the top of the column is connected to the third cylinder. The piston rod of the third cylinder is connected to the box-supporting plate, which adopts a bent plate structure.

[0019] Compared with the prior art, the beneficial effects of the present invention include:

[0020] The automatic metal wire sealing machine of the present invention has a film-sorting mechanism that can form a "I" structure at the opening of the inner bag, making the inner bag neat and straight, mimicking the way of hand-tying. This not only helps to expel the air inside the inner bag, but also prevents damage to the inner bag.

[0021] In conjunction with the film-rolling mechanism and the forming mechanism, the binding area of ​​the inner bag can be defined to ensure that the binding is complete and effectively avoid the problem of poor sealing performance caused by incomplete binding.

[0022] Meanwhile, the sealing machine of the present invention is equipped with two film suction mechanisms, which can complete the lifting and binding of the inner bag opening, making the structure simpler. At the same time, it can press down on the lid of the carton to prevent it from obstructing the sealing action. Attached Figure Description

[0023] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0024] Figure 1 This is a schematic diagram of the overall structure of an automatic metal thread sealing machine for inner bags of cartons according to the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the docking roller conveyor belt and the lifting roller conveyor belt in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the first lifting mechanism and lifting frame in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the second lifting mechanism in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the film-forming mechanism in an embodiment of the present invention;

[0029] Figure 6 Examples of embodiments of the present invention Figure 3 An enlarged structural diagram at point A in the diagram;

[0030] Figure 7 Examples of embodiments of the present invention Figure 3 An enlarged structural diagram at point B in the diagram;

[0031] Figure 8 This is a schematic diagram of the film-forming mechanism in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the molding mechanism in an embodiment of the present invention;

[0033] Figure 10 Examples of embodiments of the present invention Figure 9 Enlarged structural diagram at point C;

[0034] Figure 11 This is a schematic diagram of the sealing mechanism and forming mechanism in an embodiment of the present invention;

[0035] Figure 12 This is a schematic diagram of the inner bag and carton structure of the sealing mechanism in an embodiment of the present invention.

[0036] Figure labeling: 1. Main frame; 2. Connecting roller conveyor belt; 21. Support column; 22. First conveyor belt body; 23. Side baffle; 24. Screw; 3. First lifting mechanism; 31. First cylinder; 32. Fixing plate; 33. First slider; 34. First slide rail; 4. Lifting frame; 5. Film rolling mechanism; 51. Extrusion plate; 52. Second slider; 53. Second cylinder; 54. Second slide rail; 55. Baffle; 6. Sealing mechanism; 61. Sealing machine body; 62. Stepper motor; 63. Winding head; 7. Lifting roller conveyor belt; 71. Third slide rail; 72. First transmission wheel; 73. Third slider; 74. Connecting plate; 75. First conveyor belt; 76. Second conveyor belt body; 77. First motor; 8. Film feeding mechanism; 81. Back plate; 82. Film feeding roller; 83. Fixing plate; 84. First cylinder; 85. First conveyor belt body; 76. Second conveyor belt body; 77. First motor; 8. Film feeding mechanism; 81. Back plate; 82. Film feeding roller; 83. First cylinder; 84. First cylinder; 85. First conveyor belt body; 86. Second conveyor belt body; 77. First motor; 8 ...87. First cylinder; 88. First cylinder; 89. First cylinder 84. Fixed arm; 85. Second transmission wheel; 86. Second conveyor belt; 87. Second motor; 88. Fourth slider; 9. Fourth slide rail; 10. Box support mechanism; 91. Third cylinder; 92. Box support plate; 93. Column; 10. Film suction mechanism; 101. Fourth cylinder; 102. Fifth slide rail; 103. Fifth slider; 104. Blower; 11. Positioning mechanism; 111. Baffle; 112. Fifth cylinder; 113. Support plate; 114. Limiting plate; 12. Second lifting mechanism; 121. Sixth slide rail; 122. Sixth slider; 123. Toothed plate; 124. Gear; 125. Third motor; 13. Forming mechanism; 131. Forming block; 132. Seventh slider; 133. Third conveyor belt; 134. Third transmission wheel; 135. Fourth motor; 136. Seventh slide rail. Detailed Implementation

[0037] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0038] An automatic metal thread sealing machine for inner bags of cardboard boxes, such as Figure 1 As shown, it includes the main frame 1.

[0039] The main frame 1 is equipped with a lifting roller conveyor belt 7, which is used to drive the carton to move and lift; specifically, as shown in the example below. Figure 2As shown, the lifting roller conveyor belt 7 includes a third slide rail 71, a first transmission wheel 72, a third slider 73, a connecting plate 74, a first conveyor belt 75, a second conveyor belt body 76, and a first motor 77. A connecting plate 74 is fixed to the side of the second conveyor belt body 76, and a third slider 73 is fixed to the side of the connecting plate 74. The third slider 73 is slidably connected to the third slide rail 71, and the third slide rail 71 is fixed to the side of the main frame 1. The side of the main frame 1 connects the first motor 77 and the first transmission wheel 72. The output shaft of the first motor 77 is connected to the first transmission wheel 72 via the first conveyor belt 75. The side of the first conveyor belt 75 is connected to the connecting plate 74.

[0040] When the carton needs to be lifted or lowered, the first motor 77 is driven. When the first motor 77 is started, it drives the first conveyor belt 75 to rotate, thereby causing the first conveyor belt 75 to rotate and drive the connecting plate 74 and the third slider 73 to lift or lower on the side of the third slide rail 71; thus driving the second conveyor belt body 76 to lift or lower.

[0041] To prevent the carton from moving when the inner bag is tied, a positioning mechanism 11 is provided on the side of the lifting roller conveyor belt 7. The positioning mechanism 11 includes a baffle 111, a fifth cylinder 112, a support plate 113, and a limiting plate 114. The support plate 113 is installed on the side of the lifting roller conveyor belt 7, and the fifth cylinder 112 is provided at the top of the support plate 113. The piston rod of the fifth cylinder 112 is connected to the "L"-shaped limiting plate 114, and the end of the limiting plate 114 is bolted to the baffle 111.

[0042] When the carton enters the surface of the lifting roller conveyor belt 7, the fifth cylinder 112 is activated. The fifth cylinder 112 pushes the limiting plate 114 to cooperate with the baffle 111 to form a three-sided obstruction, so as to position the carton. The limiting plate 114 is connected to the baffle 111 by bolts, which makes it easy to adjust the position of the baffle 111 according to the width of the carton, so as to limit and fix the carton of different sizes.

[0043] To facilitate the entry of cartons into the lifting roller conveyor belt 7, symmetrical docking roller conveyor belts 2 are provided at both ends of the lifting roller conveyor belt 7. The docking roller conveyor belt 2 includes support columns 21, a first conveyor belt body 22, side baffles 23, and screws 24. Support columns 21 are provided on both sides of the first conveyor belt body 22, and the support columns 21 are threadedly connected to the screws 24. The end of the screws 24 is connected to the side baffles 23, and the side baffles 23 are bent plate structures. The distance between the two side baffles 23 is increased to facilitate the entry and exit of cartons. At the same time, the distance between the two side baffles 23 can be adjusted by the screws 24 to facilitate the conveying of cartons of different sizes.

[0044] The main frame 1 is provided with a second lifting mechanism 12 on its side, and the second lifting mechanism 12 is connected to the film-forming mechanism 8; the second lifting mechanism 12 is used to drive the film-forming mechanism 8 to move up and down; for example Figure 3 and Figure 4 As shown, the film-feeding mechanism 8 includes a back plate 81 connected to the second lifting mechanism 12. Two fixed arms 83 are connected to the side of the back plate 81 via a moving assembly. The moving assembly is used to move the two fixed arms 83 closer together or further apart. Each fixed arm 83 has a film-feeding roller 82 connected to its end. The moving assembly includes a second transmission wheel 84, a second conveyor belt 85, a second motor 86, a fourth slider 87, and a fourth slide rail 88. Figure 5 As shown, a second motor 86 and a second transmission wheel 84 are provided on the side of the back plate 81. The output shaft of the second motor 86 and the second transmission wheel 84 are connected by a second conveyor belt 85. Fixed arms 83 are respectively connected to both sides of the second conveyor belt 85. A fourth slide rail 88 is fixed on the side of the back plate 81, and a fourth slider 87 is fixed on the side of the fixed arm 83. The fourth slider 87 is slidably connected to the fourth slide rail 88. In order to facilitate the reduction of the bag opening of the inner bag and to facilitate the removal of internal air for bag opening tying, the bag opening of the inner bag is formed into a "I" shape by the film feeding mechanism 8. Specifically, by starting the second motor 86, the second motor 86 drives the second transmission wheel 84 to rotate. The rotation of the second transmission wheel 84 can drive the two fixed arms 83 to move closer or further apart. Under the drive of the fixed arms 83, the film feeding roller 82 moves closer or further apart to form the "I" shape of the bag opening of the inner bag.

[0045] The second lifting mechanism 12 includes a sixth slide rail 121, a sixth slider 122, a toothed plate 123, a gear 124, and a third motor 125, as follows: Figure 4 As shown, the sixth slide rail 121 is fixed to the side of the main frame 1, and the side of the sixth slide rail 121 is slidably connected to the sixth slider 122; the sixth slider 122 is connected to the back plate 81, and the side of the back plate 81 is connected to the third motor 125; the third motor 125 is connected to the gear 124, and the gear 124 meshes with the toothed plate 123; the toothed plate 123 is fixed to the side of the main frame 1; when the film-forming mechanism 8 needs to be raised or lowered, the third motor 125 is started. When the third motor 125 is started, it drives the gear 24 to rotate and then move on the toothed plate 123, thereby driving the entire film-forming mechanism 8 to move. The sixth slide rail 121 and the sixth slider 122 ensure that the film-forming mechanism 8 moves more smoothly.

[0046] The main frame 1 is internally connected to the lifting frame 4 via a first lifting mechanism 3; the first lifting mechanism 3 is used to move the lifting frame 4 within the main frame 1; the first lifting mechanism 3 includes a first cylinder 31, a fixed plate 32, a first slider 33, and a first slide rail 34, as shown below. Figure 3 As shown, the first slide rail 34 is installed inside the main frame 1. There are multiple first slide rails 34. The side of the first slide rail 34 is provided with a first slider 33. The first slider 33 is connected to the lifting frame 4. The end of the lifting frame 4 is connected to the first cylinder 31. The first cylinder 31 is installed on the fixing plate 32, and the fixing plate 32 is installed on the main frame 1.

[0047] When the lifting frame 4 is raised or lowered, the first cylinder 31 drives the lifting frame 4 to move the first slider 33 to slide on the outside of the first slide rail 34, thus completing the movement of the lifting frame 4.

[0048] The lifting frame 4 is equipped with a film-rolling mechanism 5, a film-suction mechanism 10, a box-supporting mechanism 9, and a sealing mechanism 6. The film-rolling mechanism 5 is used to reduce the area of ​​the inner bag near the bag opening. Two symmetrical film-rolling mechanisms 5 are provided, and each film-rolling mechanism 5 includes an extrusion plate 51, a second slider 52, a second cylinder 53, a second slide rail 54, and a baffle 55. Figure 8 and Figure 9 As shown, the second cylinder 53 is fixed to the side of the lifting frame 4, and the piston rod of the second cylinder 53 is connected to the extrusion plate 51; the end of the extrusion plate 51 is connected to the second slider 52, and the second slider 52 is slidably connected to the second slide rail 54; the second slide rail 54 is fixed to the inner side of the lifting frame 4; the two ends of the side of the extrusion plate 51 are connected to the baffles 55 with an "L" shape.

[0049] The film-forming mechanism 5 has a forming mechanism 13 inside, which includes a forming block 131, a seventh slider 132, a third conveyor belt 133, a third transmission wheel 134, a fourth motor 135, and a seventh slide rail 136. Figure 10 As shown; the lifting frame 4 has a fourth motor 135 and a third transmission wheel 134 on both sides respectively. The output shaft of the fourth motor 135 and the third transmission wheel 134 are connected by a third conveyor belt 133. Two seventh sliders 132 are connected to both sides of the third conveyor belt 133 respectively. Each seventh slider 132 has a forming block 131 connected to its end. A seventh slide rail 136 is provided between the third transmission wheel 134 and the fourth motor 135. The seventh slide rail 136 is slidably connected to the seventh slider 132. The forming block 131 includes a vertical plate and two "L"-shaped parallel plates. The two "L"-shaped parallel plates are fixedly connected to the vertical plate.

[0050] When closing the opening of the inner bag, the second cylinder 53 is first activated, which drives the two extrusion plates 51 to move closer to each other, so as to close and limit the opening of the "I"-shaped bag. Then the fourth motor 135 is activated, which drives the third conveyor belt 133 to rotate, so as to move the two forming blocks 131 to partially gather the bag opening for binding.

[0051] The film suction mechanism 10 is provided in two parts; the film suction mechanism 10 includes a fourth cylinder 101, a fifth slide rail 102, a fifth slider 103, and a blower 104; as shown Figure 7 As shown, the fourth cylinder 101 is connected to the lifting frame 4, and the piston rod of the fourth cylinder 101 is connected to the blower 104; the bottom end of the lifting frame 4 is provided with a fifth slide rail 102, and the side of the blower 104 is provided with a fifth slider 103; the fifth slider 103 is slidably connected to the fifth slide rail 102; the suction mechanism 10 is used to suck up the bag opening for bag lifting, so that the inner bag is straight and easy to tie. When suctioning the bag, the fourth cylinder 101 is driven first, and the blower 104 is driven to approach the inner bag opening through the fourth cylinder 101. The blower 104 is started to complete the suction of the bag; the suction mechanism 10 of the present invention has two parts. Compared with the four suction mechanisms of the prior art, the structure of the present invention is simpler and can complete the suction action.

[0052] To prevent the lid of the cardboard box from obstructing the bundling, a box-supporting mechanism 9 can be used to press down the lid during bundling. The box-supporting mechanism 9 includes a third cylinder 91, a box-supporting plate 92, and a column 93. The column 93 is fixed to the top of the main frame 1. Figure 6 As shown, the top of the column 93 is connected to the third cylinder 91; the piston rod of the third cylinder 91 is connected to the support plate 92, and the support plate 92 adopts a bent plate structure; when performing film sorting and bundling, the third cylinder 91 can be driven to move the support plate 92 downward, and the support plate 92 can be used to press down the lid of the carton to facilitate the processing of the inner bag of the carton.

[0053] The sealing mechanism 6 is used to seal the bag opening, which has been reduced in size; the sealing mechanism 6 includes a sealing machine body 61, a stepper motor 62, and a winding head 63, as shown below. Figure 11 As shown, the main body 61 of the sealing machine is used to tie a metal strip onto the binding part of the inner bag. The stepper motor 62 is connected to the winding head 63. The stepper motor 62 drives the winding head 63 to rotate so that it contacts the metal strip and drives the metal strip to rotate and bind. The main body 61 of the sealing machine and the winding head 63 both adopt existing technology. The winding head 63 of the present invention is driven by the stepper motor 62.

[0054] In use, the invention first inserts an inner bag into a cardboard box, then places items inside the inner bag and places it onto the docking roller conveyor belt 2. The docking roller conveyor belt 2 transports the cardboard box to the lifting roller conveyor belt 7. At this time, the fifth cylinder 102 of the positioning mechanism 11 drives the limiting plate 114 and the support plate 113 to limit and fix the cardboard box. The lifting roller conveyor belt 7 drives the first conveyor belt 75 to rotate via the first motor 77, which in turn drives the second conveyor belt body 76 to move the cardboard box upward. When the cardboard box moves upward, the film-straightening roller 82 is inserted into the inner bag, and at the same time, the film-straightening roller 82 and the box-supporting plate 92 open the four closed parts of the cardboard box. Then, the fourth cylinder 101 is activated. When the fourth cylinder 101 is activated, it drives the blower 101 to move towards the cardboard box. The blower 101 contacts the bag opening of the inner bag, at which time the lifting roller conveyor belt 7 is driven to move downward, and the blower 101 straightens the bag opening of the inner bag (e.g., Figure 12 Part a shows that the filling part is an inner bag, and the rectangular structure is a cardboard box; then the second motor 86 is started, which drives the second conveyor belt 85 to rotate, thereby causing the two film-forming rollers 82 to move away from each other, thus pulling the bag opening into an "I" shape (as shown in the image). Figure 12 (as shown in part b); then the lifting roller conveyor belt 7 moves upward and drives the third cylinder 53, causing the two extrusion plates 51 to squeeze the stretched inner bag. Then, the film-forming roller 82 moves upward and out of the inner bag under the drive of the second lifting mechanism 12. At this time, the fourth motor 135 is driven, which drives the third conveyor belt 133 to rotate, thereby driving the two forming blocks 131 to move closer to each other, so as to tighten the area of ​​the inner bag near the bag opening and reduce the area (e.g., Figure 12 (as shown in section c), and then start the main body 61 of the sealing machine and the stepper motor 62 to tie the tightened area and complete the sealing action of the inner bag.

[0055] The automatic metal wire sealing machine of the present invention has a film-sorting mechanism that can form a "I" structure at the opening of the inner bag, making the inner bag neat and straight, mimicking the way of hand-tying. This not only helps to expel the air inside the inner bag, but also prevents damage to the inner bag.

[0056] In conjunction with the film-rolling mechanism and the forming mechanism, the binding area of ​​the inner bag can be defined to ensure that the binding is complete and effectively avoid the problem of poor sealing performance caused by incomplete binding.

[0057] Meanwhile, the sealing machine of the present invention is equipped with two film suction mechanisms, which can complete the lifting and binding of the inner bag opening, making the structure simpler. At the same time, it can press down on the lid of the carton to prevent it from obstructing the sealing action.

[0058] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. An automatic metal thread sealing machine for inner bags of cardboard boxes, characterized in that, The system includes a main frame (1), inside which is provided a lifting roller conveyor belt (7), which is used to drive the carton to move and lift; a second lifting mechanism (12) is provided on the side of the main frame (1), which is connected to a film feeding mechanism (8); the film feeding mechanism (8) includes a back plate (81) connected to the second lifting mechanism (12), and the side of the back plate (81) is connected to two fixed arms (83) through a moving component; the moving component is used to move the two fixed arms (83) closer to each other or separate them, and the end of each fixed arm (83) is connected to a film feeding roller (82). The interior of the main frame (1) is connected to the lifting frame (4) via the first lifting mechanism (3); the lifting frame (4) is provided with a film-stripping mechanism (5) and a sealing mechanism (6), the film-stripping mechanism (5) is used to reduce the area of ​​the inner bag near the bag opening; the sealing mechanism (6) is used to tie the bag opening with the reduced area; The film-forming mechanism (5) has two symmetrical parts, and the film-forming mechanism (5) includes an extrusion plate (51), a second slider (52), a second cylinder (53), a second slide rail (54), and a baffle (55). The second cylinder (53) is fixed to the side of the lifting frame (4), and the piston rod of the second cylinder (53) is connected to the extrusion plate (51). The end of the extrusion plate (51) is connected to the second slider (52), and the second slider (52) is slidably connected to the second slide rail (54). The second slide rail (54) is fixed to the inside of the lifting frame (4). The two ends of the side of the extrusion plate (51) are connected to the baffle (55) with an "L" shape. It also includes a forming mechanism (13), which includes a forming block (131), a seventh slider (132), a third conveyor belt (133), a third transmission wheel (134), a fourth motor (135), and a seventh slide rail (136). The lifting frame (4) is provided with a fourth motor (135) and a third transmission wheel (134) on both sides respectively. The output shaft of the fourth motor (135) and the third transmission wheel (134) are connected by the third conveyor belt (133). Two seventh sliders (132) are connected to each side of the three conveyor belts (133), and a forming block (131) is connected to the end of each seventh slider (132); a seventh slide rail (136) is provided between the third transmission wheel (134) and the fourth motor (135), and the seventh slide rail (136) is slidably connected to the seventh slider (132); the forming block (131) includes a vertical plate and two "L"-shaped parallel plates, and the two "L"-shaped parallel plates are fixedly connected to the vertical plate.

2. The automatic metal thread sealing machine for inner bags of cartons according to claim 1, characterized in that: The moving assembly includes a second drive wheel (84), a second conveyor belt (85), a second motor (86), a fourth slider (87), and a fourth slide rail (88); the second motor (86) and the second drive wheel (84) are provided on the side of the back plate (81), and the output shaft of the second motor (86) and the second drive wheel (84) are connected by the second conveyor belt (85); fixed arms (83) are respectively connected to both sides of the second conveyor belt (85); the fourth slide rail (88) is fixed on the side of the back plate (81), and the fourth slider (87) is fixed on the side of the fixed arm (83); the fourth slider (87) is slidably connected to the fourth slide rail (88).

3. The automatic metal thread sealing machine for inner bags of cartons according to claim 1, characterized in that: The second lifting mechanism (12) includes a sixth slide rail (121), a sixth slider (122), a toothed plate (123), a gear (124), and a third motor (125). The sixth slide rail (121) is fixed to the side of the main frame (1), and the side of the sixth slide rail (121) is slidably connected to the sixth slider (122). The sixth slider (122) is connected to the back plate (81), and the side of the back plate (81) is connected to the third motor (125). The third motor (125) is connected to the gear (124), and the gear (124) meshes with the toothed plate (123). The toothed plate (123) is fixed to the side of the main frame (1).

4. An automatic metal thread sealing machine for inner bags of cartons according to any one of claims 1-3, characterized in that: The lifting roller conveyor belt (7) includes a third slide rail (71), a first transmission wheel (72), a third slider (73), a connecting plate (74), a first conveyor belt (75), a second conveyor belt body (76), and a first motor (77). The second conveyor belt body (76) is fixed with a connecting plate (74) on its side, and the third slider (73) is fixed with a third slider (73) on its side. The third slider (73) is slidably connected to the third slide rail (71), and the third slide rail (71) is fixed to the side of the main frame (1). The side of the main frame (1) is connected to the first motor (77) and the first transmission wheel (72). The output shaft of the first motor (77) is connected to the first transmission wheel (72) through the first conveyor belt (75). The side of the first conveyor belt (75) is connected to the connecting plate (74).

5. An automatic metal thread sealing machine for inner bags of cartons according to any one of claims 1-4, characterized in that: The lifting roller conveyor belt (7) is provided with a positioning mechanism (11) on its side. The positioning mechanism (11) includes a baffle (111), a fifth cylinder (112), a support plate (113), and a limiting plate (114). The support plate (113) is installed on the side of the lifting roller conveyor belt (7), and the top of the support plate (113) is provided with a fifth cylinder (112). The piston rod of the fifth cylinder (112) is connected to the "L"-shaped limiting plate (114), and the end of the limiting plate (114) is bolted to the baffle (111).

6. An automatic metal thread sealing machine for inner bags of cartons according to any one of claims 1-3, characterized in that: The lifting roller conveyor belt (7) is symmetrically provided with docking roller conveyor belts (2) at both ends. The docking roller conveyor belt (2) includes a support column (21), a first conveyor belt body (22), a side baffle (23), and a screw (24). The first conveyor belt body (22) is provided with support columns (21) on both sides, and the support columns (21) are threadedly connected to the screw (24). The end of the screw (24) is connected to the side baffle (23), and the side baffle (23) is a bent plate structure.

7. An automatic metal thread sealing machine for inner bags of cartons according to any one of claims 1-3, characterized in that: It also includes a film suction mechanism (10), of which two film suction mechanisms (10) are provided; the film suction mechanism (10) includes a fourth cylinder (101), a fifth slide rail (102), a fifth slider (103) and a blower (104); the fourth cylinder (101) is connected to the lifting frame (4), and the piston rod of the fourth cylinder (101) is connected to the blower (104); the bottom end of the lifting frame (4) is provided with a fifth slide rail (102), and the side of the blower (104) is provided with a fifth slider (103); the fifth slider (103) is slidably connected to the fifth slide rail (102).

8. An automatic metal thread sealing machine for inner bags of cartons according to any one of claims 1-3, characterized in that: It also includes a support mechanism (9), which includes a third cylinder (91), a support plate (92), and a column (93). The top of the main frame (1) is fixed with a column (93), and the top of the column (93) is connected to the third cylinder (91). The piston rod of the third cylinder (91) is connected to the support plate (92), and the support plate (92) adopts a bent plate structure.

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