Packaging bag folding device

Abstract

The utility model provides a packaging bag folding device which comprises a machine frame, a sliding groove is formed in the middle of the machine frame, a turnover unit is arranged on the top of the machine frame, the turnover unit is located above a raw material roll, and the two side edges of the raw material roll can be turned over upwards through the turnover unit. A first guide unit, a second guide unit, a third guide unit, an inward folding unit and a limiting unit are sequentially arranged on the sliding groove in the production direction of the packaging bag, the inward folding unit is used for inward folding of the inner side turnover face of the raw material roll, and the limiting unit is used for limiting the top of the outer side turnover face of the raw material roll. A raw material roll is folded along the folding plate and is gradually tightened under the action of the multiple guide units, the inner folding pressing plate folds the inner side folding face inwards, the limiting pressing plate limits the top of the outer side folding face, the raw material roll is prevented from being staggered and warped, and the product quality is improved; the inner folding face is hot-pressed by the hot-pressing device to form the hollow bag body, the finished bag body is convenient to tear and open, and the yield and the sealing performance of the bag body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bag processing, in particular to a packaging bag folding device. Background Art

[0002] Packaging bags refer to bags used to package various supplies, making it convenient to transport and store goods during the production and circulation process.

[0003] Patent document CN214056641U provides a packaging bag forming device, including a processing frame, at least one feed guide roller arranged at one end of the processing frame, a folding sheeting structure arranged on the processing frame, two adjustable rods arranged on both sides of the folding sheeting structure on the processing frame, two groups of folding wheel structures arranged on the processing frame, a first pressing structure arranged on the processing frame, a second pressing structure arranged on the processing frame, a pressing wheel structure arranged on the processing frame, a pressing roller structure arranged on the processing frame for pressing and flattening the folded raw material, and a hot pressing structure arranged on the processing frame for hot pressing and forming the flattened raw material, a discharging guide roller is also arranged between the pressing roller structure and the pressing and folding wheel structure, and the two groups of the pressing and folding wheel structures are respectively arranged below the first pressing structure and the second pressing structure. The utility model can effectively improve product quality and ensure production efficiency.

[0004] In the above scheme, the forming device is provided with a folding component, but the folding component is not suitable for producing packaging bags with heat-sealed middle part of the bag body. At the same time, there is no tensioning roller when feeding at the front end, and the raw material roll is prone to adhesion and wrinkles. Therefore, it is necessary to provide a packaging bag folding device to solve the shortcomings of the prior art. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and provide a packaging bag folding device.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A packaging bag folding device comprises a frame, a sliding groove is provided in the middle of the frame, a folding unit is provided on the top of the frame, the folding unit is located above the raw material roll, the folding unit can fold both sides of the raw material roll upward, and a first guide unit, a second guide unit, a third guide unit, an inner folding unit and a limiting unit are provided on the sliding groove in sequence along the production direction of the packaging bag, the ends of the first guide unit, the second guide unit, the third guide unit, the inner folding unit and the limiting unit are all facing the folding surface of the raw material roll, the inner folding unit is used for folding the inner folding surface of the raw material roll inwardly, and the limiting unit is used for limiting the top of the outer folding surface of the raw material roll.

[0008] The utility model is further configured that the folding unit comprises:

[0009] A sliding block, which is movably connected to the frame;

[0010] A vertical rod, the top of which is fixedly connected to the bottom of the sliding block;

[0011] A first adapter seat, the first adapter seat is installed at the bottom of the vertical rod;

[0012] A second transfer seat, which is installed at the bottom of the vertical rod and is opposite to the first transfer seat;

[0013] A folding roller, the folding roller is mounted on the first adapter seat;

[0014] A folding plate is installed on the second adapter seat.

[0015] The utility model is further configured that the first guide unit includes:

[0016] A first mounting seat, the bottom of which is inserted into the sliding groove;

[0017] A first rotating rod, the first rotating rod passes through the first mounting seat, and the first rotating rod faces the outer side of the folding surface of the raw material roll;

[0018] The guide cotton is installed at the end of the first rotating rod.

[0019] The utility model is further configured that the second guide unit includes:

[0020] A second mounting seat, the bottom of which is inserted into the sliding groove;

[0021] A second rotating rod, the second rotating rod passes through the second mounting seat, and the second rotating rod faces the outside of the folding surface of the raw material roll;

[0022] Cylindrical cotton, which is installed at the end of the second rotating rod.

[0023] The utility model is further configured that the third guide unit includes:

[0024] A third mounting seat, the bottom of which is inserted into the sliding groove;

[0025] a third rotating rod, the third rotating rod passing through the third mounting seat, the third rotating rod facing the outer side of the folding surface of the raw material roll;

[0026] Round table cotton, the round table cotton is installed at the end of the third rotating rod.

[0027] The utility model is further configured that the inner folding unit comprises:

[0028] A fourth mounting seat, the bottom of which is inserted into the sliding groove;

[0029] A fourth rotating rod, the fourth rotating rod passes through a fourth mounting seat, and the fourth rotating rod faces the outer side of the folding surface of the raw material roll;

[0030] An inner folding pressure plate is installed at the end of the fourth rotating rod, and the inner folding pressure plate is used for limiting the inner folding surface of the raw material roll.

[0031] The utility model is further configured that the limiting pressure plate includes:

[0032] A fifth mounting seat, the bottom of which is inserted into the sliding groove;

[0033] A fifth rotating rod, the fifth rotating rod passes through a fifth mounting seat, and the fifth rotating rod faces the outer side of the folding surface of the raw material roll;

[0034] A limiting pressure plate is installed at the end of the fifth rotating rod, and is used to limit the top of the outer folding surface of the raw material roll.

[0035] The utility model is further configured that the first guide unit, the second guide unit and the third guide unit are each provided with a pair.

[0036] The utility model is further configured such that the abutment heights of the first guide unit, the second guide unit and the third guide unit with the raw material roll are sequentially reduced.

[0037] The utility model is further configured that a feeding unit and a tensioning unit are provided at the front end of the folding unit, and a driving unit is provided at the rear end of the limiting unit.

[0038] In summary, the utility model has the following beneficial effects:

[0039] 1. The raw material roll of the utility model is folded along the folding plate and gradually tightened under the action of multiple guide units. The inner folding pressure plate folds the inner folding surface inwardly, and the limiting pressure plate limits the top of the outer folding surface, so as to avoid the misalignment and warping of the raw material roll and improve the product quality.

[0040] 2. The inner folded surface of the raw material roll of the utility model forms an inner folded surface under the action of the inner folding pressure plate, and the inner folded surface is heat-pressed by the hot pressing device to form a hollow bag body, which is convenient for tearing open the finished bag body, thereby improving the yield rate and the sealing performance of the bag body.

[0041] 3. Each mounting seat of the utility model can be flexibly disassembled, and each rotating rod can adjust the angle, which is suitable for raw material rolls of different sizes and has a wide range of applications.

[0042] 4. The utility model is provided with a tensioning unit which can unfold the raw material roll on the feeding unit to avoid adhesion and wrinkles of the raw material roll which affect the product quality, and also to prevent the raw material roll from sagging to the ground when the driving unit fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a structural schematic diagram of the utility model.

[0044] Figure 2 This utility model Figure 1 AA cross-section of the raw material roll.

[0045] Figure 3 It is a partial structural schematic diagram of the production line where the utility model is located.

[0046] In the figure, 1. frame, 2. sliding groove, 31. sliding block, 32. vertical rod, 33. first adapter, 34. second adapter, 35. folding roller, 36. folding plate, 41. first mounting seat, 42. first rotating rod, 43. guide cotton, 51. second mounting seat, 52. second rotating rod, 53. cylindrical cotton, 61. third mounting seat, 62. third rotating rod, 63. frustum cotton, 71. fourth mounting seat, 72. fourth rotating rod, 73. inner folding plate, 81. fifth mounting seat, 82. fifth rotating rod, 83. limiting plate, 9. feeding unit, 10. tensioning unit, 11. driving unit, 12. raw material roll, 121. inner folding surface, 122. outer folding surface, 123. inner folding surface. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0048] Embodiment 1:

[0049] In this embodiment, if Figure 1-3As shown, a packaging bag folding device proposed by the utility model includes a frame 1, a sliding groove 2 is provided in the middle of the frame, a folding unit is provided on the top of the frame, the folding unit is located above the raw material roll 12, the folding unit can fold both sides of the raw material roll upward, and a first guide unit, a second guide unit, a third guide unit, an inner folding unit and a limiting unit are sequentially provided on the sliding groove along the production direction of the packaging bag, the ends of the first guide unit, the second guide unit, the third guide unit, the inner folding unit and the limiting unit are all facing the folding surface of the raw material roll, the inner folding unit is used for folding the inner folding surface of the raw material roll inwardly, and the limiting unit is used for limiting the top of the outer folding surface of the raw material roll.

[0050] In this embodiment, it is further configured that the folding unit includes a sliding block 31, a vertical rod 32, a first adapter seat 33, a second adapter seat 34, a folding roller 35 and a folding plate 36, the sliding block is movably connected to the frame; the top of the vertical rod is fixedly connected to the bottom of the sliding block; the first adapter seat is installed at the bottom of the vertical rod; the second adapter seat is installed at the bottom of the vertical rod and is opposite to the first adapter seat; the folding roller is installed on the first adapter seat, and the folding roller assists in conveying the raw material roll, and the size of the folding roller can be disassembled and replaced according to the width of the raw material roll; the folding plate is installed on the second adapter seat, and the width of the folding plate can be disassembled and replaced according to the width of the raw material roll, and the folding plate can make the raw material roll fold inward along the two ends of the folding plate for wrapping and shaping.

[0051] In this embodiment, it is further configured that the first guide unit includes a first mounting seat 41, a first rotating rod 42 and a guide cotton 43, the bottom of the first mounting seat is inserted into the sliding groove; the first rotating rod passes through the first mounting seat, and the first rotating rod faces the outer side of the folding surface of the raw material roll; the guide cotton is installed at the end of the first rotating rod.

[0052] The utility model is further configured such that the second guide unit includes a second mounting seat 51, a second rotating rod 52 and cylindrical cotton 53, the bottom of the second mounting seat is inserted into the sliding groove; the second rotating rod passes through the second mounting seat, and the second rotating rod faces the outer side of the folding surface of the raw material roll; the cylindrical cotton is installed at the end of the second rotating rod.

[0053] In this embodiment, it is further configured that the third guide unit includes a third mounting seat 61, a third rotating rod 62 and a truncated cone cotton 63, the bottom of the third mounting seat is inserted into the sliding groove; the third rotating rod passes through the third mounting seat, and the third rotating rod faces the outer side of the folding surface of the raw material roll; the truncated cone cotton is installed at the end of the third rotating rod.

[0054] In this embodiment, it is further configured that the inner folding unit includes a fourth mounting seat 71, a fourth rotating rod 72 and an inner folding pressure plate 73, the bottom of the fourth mounting seat is inserted in the sliding groove; the fourth rotating rod passes through the fourth mounting seat, and the fourth rotating rod faces the outer side of the folding surface of the raw material roll; the inner folding pressure plate is installed at the end of the fourth rotating rod, and the inner folding pressure plate is used to limit the inner folding of the inner folding surface of the raw material roll.

[0055] In this embodiment, it is further configured that the limiting pressure plate includes a fifth mounting seat 81, a fifth rotating rod 82 and a limiting pressure plate 83, the bottom of the fifth mounting seat is inserted in the sliding groove; the fifth rotating rod passes through the fifth mounting seat, and the fifth rotating rod faces the outside of the folding surface of the raw material roll; the limiting pressure plate is installed at the end of the fifth rotating rod, and the limiting pressure plate is used to limit the top of the outer folding surface of the raw material roll.

[0056] In this embodiment, the tops of the first mounting seat, the second mounting seat, the third mounting seat, the fourth mounting seat and the fifth mounting seat are all provided with locking members, which are not shown in the figure. The locking members can fix the mounting seat on the frame to prevent the mounting seat from moving. When not locked, the mounting seat can move in the sliding groove. The middle parts of the first rotating rod, the second rotating rod, the third rotating rod, the fourth rotating rod and the fifth rotating rod are all provided with hinged seats, so that the rotating rods can adjust the angles to adapt to material rolls of different widths, and the scope of application is wider. The purpose of the guide cotton, cylindrical cotton and truncated cone cotton is to gradually tighten the folding surfaces on both sides of the raw material roll, and they can be disassembled, replaced and adjusted according to the material rolls of different widths.

[0057] In this embodiment, it is further configured that each of the first guide unit, the second guide unit and the third guide unit is provided in pair.

[0058] In this embodiment, it is further configured that the contact heights of the first guide unit, the second guide unit and the third guide unit with the raw material roll are successively reduced, so that the folded surfaces on both sides of the raw material roll can be gradually tightened.

[0059] Embodiment 2:

[0060] In this embodiment, if Figure 1-2 As shown, the raw material roll moves forward under the conveyance of the folding roller, and the two sides of the raw material roll form an inner folding surface 121 and an outer folding surface 122 along the folding plate under the action of multiple guide units. The total width of the inner folding surface and the outer folding surface is greater than the width of the folding plate, so that the inner folding surface and the outer folding surface abut when folding toward the center, and under the inner folding limit of the inner folding pressure plate and the top limit of the limit pressure plate, an inner folding surface 123 is formed, and the inner folding surface is hot pressed by a subsequent hot pressing device.

[0061] Embodiment 3:

[0062] In this embodiment, if Figure 3 As shown, a feeding unit 9 and a tensioning unit 10 are provided at the front end of the folding unit, and a driving unit 11 is provided at the rear end of the limiting unit.

[0063] The feeding unit is used to place the raw material roll; the tensioning unit can unfold the raw material roll on the feeding unit to prevent the raw material roll from sticking and wrinkling, which affects the product quality, and at the same time prevent the raw material roll from drooping and falling to the ground when the driving unit fails; the driving unit is used to provide driving force for the raw material roll to be transported forward.

[0064] There are also heat pressing units, punching units and cutting units behind the driving unit. The inner folding surface is heat pressed by the heat pressing unit to form a hollow bag body, which is convenient for tearing open the finished bag body, and can improve the yield rate and the sealing of the bag body.

[0065] In the description of the present utility model, it should be noted that when terms such as "upper", "lower", "inner", "outer", "left", "right" and the like indicating orientation or positional relationship appear, it should be understood that the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, when terms such as "first" and "second" appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "setting", and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A packaging bag folding device, comprising a frame, characterized in that: A sliding groove is provided in the middle of the frame, and a folding unit is provided on the top of the frame. The folding unit is located above the raw material roll. The folding unit can fold both sides of the raw material roll upward. The sliding groove is provided with a first guide unit, a second guide unit, a third guide unit, an inner folding unit and a limiting unit in sequence along the production direction of the packaging bag. The ends of the first guide unit, the second guide unit, the third guide unit, the inner folding unit and the limiting unit are all facing the folding surface of the raw material roll. The inner folding unit is used for folding the inner folding surface of the raw material roll inwardly, and the limiting unit is used for limiting the top of the outer folding surface of the raw material roll.

2. A packaging bag folding device according to claim 1, characterized in that: The folding unit includes: A sliding block, which is movably connected to the frame; A vertical rod, the top of which is fixedly connected to the bottom of the sliding block; A first adapter seat, the first adapter seat is installed at the bottom of the vertical rod; A second transfer seat, which is installed at the bottom of the vertical rod and is opposite to the first transfer seat; A folding roller, the folding roller is mounted on the first adapter seat; A folding plate is installed on the second adapter seat.

3. The packaging bag folding device according to claim 1, characterized in that: The first guiding unit comprises: A first mounting seat, the bottom of which is inserted into the sliding groove; A first rotating rod, the first rotating rod passes through the first mounting seat, and the first rotating rod faces the outer side of the folding surface of the raw material roll; The guide cotton is installed at the end of the first rotating rod.

4. The packaging bag folding device according to claim 1, characterized in that: The second guiding unit comprises: A second mounting seat, the bottom of which is inserted into the sliding groove; A second rotating rod, the second rotating rod passes through the second mounting seat, and the second rotating rod faces the outside of the folding surface of the raw material roll; Cylindrical cotton, which is installed at the end of the second rotating rod.

5. The packaging bag folding device according to claim 1, characterized in that: The third guidance unit includes: A third mounting seat, the bottom of which is inserted into the sliding groove; a third rotating rod, the third rotating rod passing through the third mounting seat, the third rotating rod facing the outer side of the folding surface of the raw material roll; Round table cotton, the round table cotton is installed at the end of the third rotating rod.

6. The packaging bag folding device according to claim 1, characterized in that: The inner folding unit includes: A fourth mounting seat, the bottom of which is inserted into the sliding groove; A fourth rotating rod, the fourth rotating rod passes through a fourth mounting seat, and the fourth rotating rod faces the outer side of the folding surface of the raw material roll; An inner folding pressure plate is installed at the end of the fourth rotating rod, and the inner folding pressure plate is used for limiting the inner folding surface of the raw material roll.

7. The packaging bag folding device according to claim 1, characterized in that: The limit pressure plate includes: A fifth mounting seat, the bottom of which is inserted into the sliding groove; A fifth rotating rod, the fifth rotating rod passes through a fifth mounting seat, and the fifth rotating rod faces the outer side of the folding surface of the raw material roll; A limiting pressure plate is installed at the end of the fifth rotating rod, and is used to limit the top of the outer folding surface of the raw material roll.

8. The packaging bag folding device according to claim 1, characterized in that: The first guide unit, the second guide unit and the third guide unit are each provided in pair.

9. The packaging bag folding device according to claim 1, characterized in that: The abutment heights of the first guide unit, the second guide unit and the third guide unit with the raw material roll are successively reduced.

10. The packaging bag folding device according to claim 1, characterized in that: A feeding unit and a tensioning unit are arranged at the front end of the folding unit, and a driving unit is arranged at the rear end of the limiting unit.

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