Folding device of three-dimensional bag forming machine

Abstract

The utility model discloses a folding device of a three-dimensional bag forming machine, comprising a pair of folding mechanisms relatively arranged on both sides of the frame along the width direction of the frame of the three-dimensional bag forming machine, each folding mechanism comprising a mounting frame installed on the frame, a folding component and a pressing component installed on the mounting frame; wherein the pressing component comprises a first driving component and a pressing component installed on the mounting frame, and the first driving component is transmission-connected with the pressing component; the folding component comprises a second driving component and a folding plate installed on the mounting frame, and the second driving component is transmission-connected with the folding plate; when the sheet material is conveyed to the supporting surface of the supporting platform, the sheet material is fixed by the pressing head, and the folding plate pushes the folding to be folded on the sheet material pressed by the pressing component, therefore, when the end of the sheet material is folded by the folding plate, the sheet material does not move, so that the position of the indentation line is accurate after the folding of the sheet material is completed, thereby improving the quality and aesthetics of the produced three-dimensional bag.

Description

Technical Field

[0001] The utility model belongs to the technical field of three-dimensional bag forming, in particular to a folding device of a three-dimensional bag forming machine. Background Art

[0002] The three-dimensional bag forming machine is a kind of equipment used to produce three-dimensional bags, mainly used to manufacture environmentally friendly bags, especially non-woven bags, paper bags, etc. Three-dimensional bag forming machines can be divided into two types: semi-automatic and fully automatic, which are suitable for different production needs and efficiency requirements.

[0003] Automatic folding is an indispensable step in the process of making three-dimensional bags by three-dimensional bag forming machines, such as bag mouth folding, bag bottom folding, etc. The folding device of three-dimensional bag forming machines is a device used to bend the edges of various materials. It is widely used in the folding of sheets during the forming process of three-dimensional bags, such as paper, non-woven fabrics, paper and other materials. Its main function is to bend the edge of the material into the required shape to meet different industrial needs.

[0004] For example, in the process of making paper bags, when the paper bags need to be processed by a three-dimensional bag forming machine, the folding device of the three-dimensional bag forming machine needs to fold the sheet of paper bags. For example, in the process of making paper bags, the bag mouth is folded up to ensure the connection strength of the bag mouth.

[0005] In the prior art, when folding different sheets, such as paper, the sheet is usually folded at a certain angle, such as 60°, 30°, etc., by means of a folding groove, and then pressed by a folding wheel to form a folded edge. However, when folding the sheet in this way, the part of the sheet that needs to be folded is generally not fixed, which will cause the stress at the crease to be different during the folding process of the sheet, and the crease position to be different, thereby reducing the aesthetics of the manufactured product. In addition, due to the deviation in the crease position, the connection strength of the product at different positions in the folding area will also deviate, thereby reducing the quality of the product.

[0006] Therefore, in the process of folding the sheet material, the folding device in the prior art has a problem of deviation in the folding position, which leads to a reduction in the aesthetics and quality of the product. Utility Model Content

[0007] The utility model aims to solve the problem in the prior art that when a folding device folds a sheet, the folding position has deviation, thereby reducing the aesthetics and quality of the product.

[0008] In order to solve the above problems, the utility model provides a folding device of a three-dimensional bag forming machine. When folding the sheet for making the three-dimensional bag, the sheet is conveyed to the supporting surface of the support table, and the first driving component drives the pressing component to translate toward the supporting table and links the pressing head to move toward the sheet and press the end of the corresponding side of the sheet on the supporting table, thereby fixing the sheet; the second driving component drives the folding plate to fold the end of the corresponding side of the sheet along the edge of the pressing head around the length direction of the frame, and the end of the corresponding side of the sheet is folded toward the pressing head and clamped between the pressing head and the folding plate, so that the crease is formed along the edge of the pressing head with accurate position, thereby improving the quality and aesthetics of the produced three-dimensional bag.

[0009] In order to solve the above problems, the technical solution adopted by the utility model is: a folding device of a three-dimensional bag forming machine, including a pair of folding mechanisms relatively arranged on both sides of the frame along the width direction of the frame of the three-dimensional bag forming machine, each folding mechanism includes a mounting frame installed on the frame, a folding component installed on the mounting frame, and a pressing component.

[0010] Among them, the clamping assembly includes a first driving component and a clamping component installed on the mounting frame, wherein the first driving component is transmission connected to the clamping component, the clamping component is movably arranged on the mounting frame, the first driving component drives the clamping component to translate along the width direction and links the clamping head of the clamping component to move away from or close to the support table supporting the sheet material that forms the three-dimensional bag; the folding assembly includes a second driving component and a folding plate installed on the mounting frame, the second driving component is transmission connected to the folding plate, and drives the folding plate to flip relative to the support table around the length direction of the frame.

[0011] When the sheet is conveyed to the supporting surface of the support table, the first driving component drives the pressing component to translate toward the supporting table and links the pressing head to move toward the sheet and press the end of the corresponding side of the sheet on the supporting table, thereby achieving the position fixation of the end of the sheet; then, the second driving component drives the folding plate to fold the end of the corresponding side of the sheet along the edge of the pressing head around the length direction of the frame, so that the end of the sheet is gradually folded along the length direction at the edge position of the pressing head to form an indentation line. When the end of the corresponding side of the sheet is folded toward the pressing head and clamped between the pressing head and the folding plate, the folding of the sheet is completed. At this time, the indentation line is formed at the edge position of the pressing head along the length direction. Since the sheet is fixed by the pressing head during the folding process, the sheet will not move, so that the position of the indentation line is accurate after the folding of the sheet is completed, thereby improving the quality and aesthetics of the produced three-dimensional bag.

[0012] An embodiment of a folding device of a three-dimensional bag forming machine, in order to ensure the accuracy of folding, a second driving component is provided, including a second driving member installed on a mounting frame, and the second driving member is connected to the folding plate through a transmission connection member; wherein, the sheet is conveyed to the supporting surface of the support table, and the end of the corresponding side of the sheet is aligned with the folding plate in the height direction, and the second driving member drives the transmission connection member to link the folding plate to fold the end of the corresponding side of the sheet along the edge of the pressing head along the length direction of the frame.

[0013] An implementation method of the folding device of a three-dimensional bag forming machine, in order to avoid the problem that the pressing head drives the sheet to move during the process of loosening the sheet, thereby causing the sheet to wrinkle, a support platform is provided including a discharge platform and a pair of support platforms, the pair of support platforms are respectively installed on the mounting frames of their respective corresponding folding mechanisms, along the width direction of the frame, the discharge platform is located between the pair of support platforms, and is used to place the sheet.

[0014] In addition, the clamping assembly further comprises a limiting component, which is mounted on the mounting frame and can move along the height direction.

[0015] When the sheet is conveyed to the supporting platform, the supporting surface of the folding plate, and the material discharging platform, the limiting component moves downward in the height direction and presses the sheet onto the material discharging platform.

[0016] An embodiment of the folding device of a three-dimensional bag forming machine is that, in order to adapt to the width of different sheets, a first slide rail is provided on the frame, a first slide groove adapted to the first slide rail is provided on the mounting frame, and the mounting frame is slidably connected to the first slide rail of the frame through the first slide groove; and a second slide rail is provided on the mounting frame, a second slide groove adapted to the second slide rail is provided on the sliding seat, and the sliding seat is slidably connected to the second slide rail of the mounting frame through the second slide groove.

[0017] The first slide rail, the first slide groove, the second slide rail, and the second slide groove all extend along the width direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of the folding device provided in an embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the overall structure of the folding mechanism provided by an embodiment of the utility model at a first viewing angle;

[0020] Figure 3 for Figure 2 A magnified view of part A;

[0021] Figure 4 A schematic diagram of the overall structure of the folding mechanism provided by an embodiment of the utility model at a second viewing angle;

[0022] Figure 5 A schematic diagram of the overall structure of the folding mechanism provided by an embodiment of the utility model at a third viewing angle;

[0023] Figure 6 This is a schematic diagram of the overall structure of the folding assembly provided in an embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1. Folding device;

[0026] 10. Folding mechanism; 11. Mounting frame; 12. Pressing assembly; 13. Folding assembly; 14. Support platform; 15. First driving component; 16. Pressing component; 17. Second driving component; 18. Folding plate; 19. Guide component; 20. Limiting component;

[0027] 100, pressing head; 101, sliding seat; 102, first driving member; 103, transmission member; 104, sliding part; 105, pressing plate; 106, guide groove; 107, guide protrusion; 108, rotating disk; 109, transmission rod; 110, first guide section; 111, second guide section; 112, third guide section; 113, rib plate; 114, second driving member; 115, transmission connecting member; 116, driving disk; 117, connecting rod; 118, cam; 119, rotating shaft; 120, pushing connecting rod assembly; 121, first swing arm; 122, second swing arm; 123, connecting seat; 124, first arc arm; 125, second arc arm; 126, lifting member; 127, limiting plate; 128, supporting platform; 129, first slide rail; 130, first slide groove; 131, second slide rail;

[0028] 30, rack; 40, width direction; 50, length direction; 60, height direction. DETAILED DESCRIPTION

[0029] Automatic folding is an indispensable step in the process of making three-dimensional bags by three-dimensional bag forming machines, such as bag mouth folding, bag bottom folding, etc. The folding device of three-dimensional bag forming machines is a device used to bend the edges of various materials. It is widely used in the folding of sheets during the forming process of three-dimensional bags, such as paper, non-woven fabrics, paper and other materials. Its main function is to bend the edge of the material into the required shape to meet different industrial needs.

[0030] However, when the prior art folds different sheets, such as paper, the sheet is usually folded at a certain angle, such as 60°, 30°, etc., by means of a folding groove, and then pressed by a folding wheel to form a folded edge. However, when folding the sheet in this way, the part of the sheet that needs to be folded is generally not fixed, which will cause the stress at the crease to be different during the folding process of the sheet, and the crease position to be different, thereby reducing the aesthetics of the manufactured product. In addition, due to the deviation in the crease position, the connection strength of the product at different positions in the folding area will also deviate, thereby reducing the quality of the product.

[0031] In order to solve the above problems, the utility model provides a folding device of a three-dimensional bag forming machine. When folding the sheet material for making the three-dimensional bag and the sheet material is conveyed to the supporting surface of the supporting table, the first driving component drives the pressing component to translate toward the supporting table and links the pressing head to move toward the sheet material and press the end of the corresponding side of the sheet material on the supporting table, thereby achieving the position fixation of the end of the sheet material; then, the second driving component drives the folding plate to fold the end of the corresponding side of the sheet material along the edge of the pressing head around the length direction of the frame, so that the end of the sheet material is gradually folded along the length direction at the edge position of the pressing head to form an indentation line. When the end of the corresponding side of the sheet material is folded toward the pressing head and clamped between the pressing head and the folding plate, the folding of the sheet material is completed. At this time, the indentation line is formed at the edge position of the pressing head along the length direction. Since the sheet material is fixed during the folding process, the sheet material does not move, so that the position of the indentation line is accurate after the folding of the sheet material is completed, thereby improving the quality and aesthetics of the produced three-dimensional bag.

[0032] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] like Figure 1 and Figure 2 As shown, first, the overall structure of the folding device 1 of this three-dimensional bag forming machine is introduced.

[0034] A folding device 1 of a three-dimensional bag forming machine includes a pair of folding mechanisms 10 relatively arranged on both sides of a frame 30 along a width direction 40 of the three-dimensional bag forming machine, and the folding mechanisms 10 are used to fold the ends of the sheet; wherein each folding mechanism 10 includes a mounting frame 11 installed on the frame 30, a folding assembly 13 installed on the mounting frame 11, and a pressing assembly 12.

[0035] Specifically, the clamping assembly 12 includes a first driving component 15 and a clamping component 16 installed on the mounting frame 11, wherein the first driving component 15 is transmission-connected to the clamping component 16, and the clamping component 16 is movably arranged on the mounting frame 11, and the first driving component 15 drives the clamping component 16 to translate along the width direction 40 and links the clamping head 100 of the clamping component 16 to move away from or close to the support table 14 supporting the sheet material for forming the three-dimensional bag; the folding assembly 13 includes a second driving component 17 and a folding plate 18 installed on the mounting frame 11, and the second driving component 17 is transmission-connected to the folding plate 18 and drives the folding plate 18 to flip relative to the support table 14 around the length direction 50 of the frame 30; it should be understood that in the width direction 40, the support table 14 is located between a pair of folding mechanisms 10.

[0036] More specifically, the working principle of the folding device 1 is as follows: when the sheet material for making the three-dimensional bag is folded and the sheet material is conveyed to the support surface of the support platform 14, the first driving component 15 drives the pressing component 16 to translate toward the support platform 14 and links the pressing head 100 to move toward the sheet material and press the end of the corresponding side of the sheet material onto the support platform 14, thereby achieving the position fixation of the end of the sheet material; then, the second driving component 17 drives the folding plate 18 to fold the end of the corresponding side of the sheet material along the length direction 50 of the frame 30 and along the edge of the pressing head 100, so that the end of the sheet material is at the edge of the pressing head 100 along the length direction 50. The edge position of the sheet 00 is gradually folded over to form an indentation line. When the end of the corresponding side of the sheet is folded toward the clamping head 100 and clamped between the clamping head 100 and the folding plate 18, the folding of the sheet is completed. At this time, the indentation line is formed at the edge position of the clamping head 100 along the length direction 50. In addition, since the sheet is fixed during the folding process, the sheet will not move, so that the indentation line position of the sheet is accurate after the folding is completed. After the folding is completed, each position of the folding area of ​​the sheet is flush with the indentation line, so that the connection strength of each folding position is the same, thereby improving the quality and aesthetics of the produced three-dimensional bag. It should be understood that the edge of the clamping head close to the folding plate extends along the length direction to ensure that each position of the folding area of ​​the material is flush with the indentation line after the folding is completed.

[0037] It should be understood that: during the folding process of the sheet, the sheet is placed horizontally above the support surface of the support platform 14; and, when the sheet is placed horizontally on the support platform 14, a partial area of ​​the end of the corresponding side of the sheet is also located above the folding plate 18 in the height direction 60, and the end of the corresponding side of the sheet refers to the position area where the sheet is placed above the support platform 14 and the folding plate 18; wherein, the folding plate 18 is also placed horizontally before being folded; and, when the folding plate 18 has not folded the end of the sheet, in the width direction 40, the clamping head 100 and the folding plate 18 are misaligned.

[0038] Furthermore, the structure and arrangement of the clamping assembly 12 are further explained below.

[0039] In one possible implementation, Figure 1-Figure 5 As shown, after the folding plate 18 of the folding assembly 13 folds the end of the sheet, the folding plate 18 limits the clamping head 100 in the height direction 60, so the clamping component 16 is provided, including a sliding seat 101 movably provided on the mounting frame 11 along the width direction 40, and a clamping head 100 movably provided below the sliding seat 101 along the height direction 60; the first driving component 15 includes a first driving member 102 provided on the mounting frame 11, and the driving end of the first driving member 102 is transmission-connected to the sliding seat 101 through a transmission member 103, so as to drive the sliding seat 101 to move along the width direction 40; and the clamping head 100 includes a sliding portion 104, and a pressing plate 105 provided at the lower end of the sliding portion 104, wherein the upper end of the sliding portion 104 is movably connected to the sliding seat 101 along the height direction 60.

[0040] Specifically, when the sheet is conveyed to the support platform 14, the transmission member 103 is first driven by the first driving member 102 and the sliding seat 101 is linked to move along the width direction 40 toward the end of the corresponding side of the sheet. At the same time, the sliding seat 101 drives the pressure plate 105 to move along the width direction 40 toward the end of the corresponding side of the sheet, and the pressure plate 105 can move downward through the sliding part 104. When the pressure plate 105 presses the end of the sheet against the support platform 14, the first driving mechanism stops driving the transmission member 103; then the second driving component 17 drives the folding plate 18 to fold the end of the corresponding side of the sheet along the edge of the pressure plate 105 along the length direction 50 of the frame 30, thereby folding the sheet.

[0041] More specifically, when the folding is completed, the folding plate 18 limits the pressure plate 105 in the height direction 60. Therefore, the transmission member 103 is driven by the first driving member 102 and the sliding seat 101 is linked to move in the width direction 40 toward the sheet and away from the sheet, so that the pressure plate 105 and the folding plate 18 are misaligned with each other in the width direction 40, and then the sliding part 104 is used to make the pressure plate 105 rise in the height direction 60 away from the sheet. At this time, the sheet is not limited and can be transported away, and then the folding plate 18 performs a reset action.

[0042] Furthermore, the structure and arrangement of the first driving member 102 and the transmission member 103 are not limited.

[0043] For example, in one possible implementation, Figure 2-Figure 5As shown, the first driving component 102 is configured as a first driving motor fixedly mounted on the mounting frame 11; the transmission component 103 includes a turntable 108 fixedly mounted on the driving end of the first driving motor, a transmission rod 109 having one end rotatably connected to the edge of the turntable 108 and the other end extending along the width direction 40 and rotatably connected to the side of the sliding seat 101. When the clamping head 100 is driven to move, the turntable 108 is driven to rotate by the driving end of the first driving motor, so that the turntable 108 pulls the transmission rod 109 and links the sliding seat 101 to move along the width direction 40, thereby changing the position of the clamping head 100 in the width direction 40.

[0044] More specifically, the upper end of the sliding part 104 is also movably arranged on the mounting frame 11 through the guide component 19, and the guide component 19 includes a guide groove 106 arranged on the side wall of the mounting frame 11, and a guide protrusion 107 arranged on the upper end of the sliding part 104 and adapted to the guide groove 106. When the first driving member 102 drives the transmission member 103 and links the sliding seat 101 to translate along the width direction 40, the sliding seat 101 will drive the sliding part 104 and the guide protrusion 107 to move in the guide groove 106, thereby driving the pressing plate 105 away from or close to the support platform 14. Through this arrangement, only one driving motor is required to achieve the change of the position of the pressing head 100 in the width direction 40 and the height direction 60, so this folding device 1 also has the advantage of simple structure.

[0045] Optionally, in one embodiment, Figure 2 and Figure 3 As shown, the guide groove 106 includes a first guide section 110, a second guide section 111 and a third guide section 112 which are connected in sequence in the width direction 40; wherein the first guide section 110 is farther away from the folding plate 18 than the third guide section 112, both extend along the width direction 40, and, in the height direction 60, the first guide section 110 is farther away from the support platform 14 than the third guide section 112; and the second guide section 111 extends obliquely to connect the two adjacent ends of the first guide section 110 and the third guide section 112, so that the first guide section 110 and the third guide section 112 are connected through the second guide section 111.

[0046] Specifically, when the sheet is conveyed to the support table 14 and the pressure plate 105 is required to press the end of the sheet, the transmission member 103 is driven by the first driving member 102 and the sliding seat 101 is linked to move along the width direction 40. At this time, the guide protrusion 107 gradually moves toward the end of the sheet in the first guide section 110. After the guide protrusion 107 enters the second guide section 111 from the first guide section 110, the sliding part 104 drives the pressure plate 105 to move gradually downward, so that the pressure plate 105 gradually approaches the end of the sheet. After the guide protrusion 107 completely enters the third guide section 112, the pressure plate 105 contacts the sheet and presses the end of the sheet against the support table 14. It should be understood that after the guide protrusion 107 completely enters the third guide section 112, it needs to move a certain distance so that the pressure plate 105 can completely cover the area where the end of the sheet needs to be pressed; and, when the folding is completed, when the pressure plate 105 relaxes the end of the sheet, by moving the guide protrusion 107 a certain distance in the third moving section, the pressure plate 105 and the folding plate 18 can be misaligned in the width direction 40, thereby avoiding the problem that the folding plate 18 limits the pressure plate 105 when the pressure plate 105 moves upward in the height direction 60, thereby causing interference between the movements of the two.

[0047] More specifically, the structure and arrangement of the guide protrusion 107 and the sliding portion 104 are not limited.

[0048] For example, in one possible implementation, Figure 1 As shown, the sliding portion 104 includes a sliding rod arranged along the height direction 60, and a limit block fixedly mounted on the sliding rod, wherein one end of the sliding rod passes through the sliding seat 101 and is slidably connected to the sliding seat 101, and the other end extends along the height direction 60 and is fixedly connected to the side of the pressing block away from the support platform 14; the guide protrusion 107 includes a roller slidably connected to the guide groove 106, and a connecting rod with one end rotatably connected to the roller and the other end extending along the length direction 50 and rotatably connected to the limit block.

[0049] Furthermore, in another feasible embodiment, the first driving member 102 includes a first electric push rod and a second electric push rod installed on the mounting frame 11, wherein the driving end of the first electric push rod is transmission-connected to the sliding seat 101, and can drive the sliding seat 101 to translate along the width direction 40; the sliding portion 104 is configured as a driving cylinder installed on the sliding seat 101, and the driving end of the driving cylinder is transmission-connected to the side of the pressure plate 105 away from the support platform 14, and can drive the pressure plate 105 to move along the height direction 60.

[0050] Specifically, when it is necessary to drive the clamping head 100 to move and clamp the end of the sheet, the driving end of the first electric push rod drives the sliding seat 101 to move above the end of the sheet along the width direction 40, and then the second electric push rod drives the pressure plate 105 to move downward along the height direction 60 to press the sheet onto the support table 14.

[0051] Further, in an achievable implementation, as Figure 1 and Figure 2 As shown, the pressing plate 105 extends along the length direction 50 of the frame 30, and a plurality of ribs 113 extending along the height direction 60 are arranged at intervals on the side of the pressing plate 105 away from the support platform 14; on the one hand, the plurality of ribs 113 can strengthen the structural strength of the pressing plate 105, and on the other hand, it can also be realized that when the folding device 1 is used on some three-dimensional bag forming machines that need to insert bags or apply glue after folding, the folding plate 18 is driven by the second driving component 17 to fold the end of the corresponding side of the sheet along the edge of the pressing plate 105 along the length direction 50 of the frame 30. When the folding plate 18 presses the folded part of the sheet to the side of the pressing plate 105 away from the support platform 14, due to the existence of the ribs 113, an opening is formed at the folding position of the sheet, which is convenient for subsequent bag insertion or gluing.

[0052] Furthermore, in a feasible embodiment, in order to adapt to the width of different sheets, a first slide rail 129 is provided on the frame 30, and a first slide groove 130 adapted to the first slide rail 129 is provided on the mounting frame 11. The mounting frame 11 is slidably connected to the first slide rail 129 of the frame 30 through the first slide groove 130. When the width of the sheet changes, the position of the folding mechanism 10 can be changed by sliding the mounting frame 11 on the frame 30.

[0053] Alternatively, if Figure 2 As shown, the mounting frame 11 is also provided with a second slide rail 131, and the sliding seat 101 is provided with a second slide groove adapted to the second slide rail 131. The sliding seat 101 is slidingly connected to the second slide rail 131 of the mounting frame 11 through the second slide groove, thereby realizing a sliding connection between the sliding seat 101 and the mounting frame 11.

[0054] It should be noted that the first slide rail 129, the first slide groove 130, the second slide rail 131, and the second slide groove all extend in the width direction 40; and, there is a certain spacing distance between the support platform 128 and the discharge platform in the width direction 40 to ensure the moving stroke of the mounting frame 11. When the position of the mounting frame 11 is changed, the first slide groove 130 slides on the first slide rail 129 along the width direction 40 to change the position of the mounting frame 11, thereby adapting to the width of different sheets.

[0055] Further, in an achievable implementation, as Figure 4 and Figure 5 As shown, after the folding plate 18 of the folding assembly 13 folds the end of the sheet, the folding plate 18 limits the clamping head 100 in the height direction 60. Therefore, when the folding is completed and the clamping head 100 moves along the width direction 40 to release the end of the sheet, the position of the sheet may be offset due to friction when the clamping head 100 just starts to move. Therefore, in order to ensure that the position of the sheet does not shift, the clamping assembly 12 is provided with a limiting component 20. The limiting component 20 is installed on the mounting frame 11 and can be moved along the height direction 60 Move; and, the support table 14 includes a discharge platform and a pair of support platforms 128, the pair of support platforms 128 are respectively installed on the mounting frames 11 of their respective corresponding folding mechanisms 10, along the width direction 40 of the frame 30, the discharge platform is located between the pair of support platforms 128, for placing the sheet; wherein, when the sheet is conveyed to the support platform 128, the supporting surface of the folding plate 18, and the discharge platform (not shown in the figure), the limiting component 20 moves downward along the height direction 60 and presses the sheet onto the discharge platform.

[0056] It should be understood that, in the width direction 40, the limiting component 20 is farther away from the folding plate 18 than the clamping component 16; and, when the sheet is conveyed to the support platform 128, the folding plate 18 and the discharge platform, the support surfaces of the support platform 128 and the discharge platform are located in the same horizontal plane in the width direction 40, and the support surface of the folding plate 18 is also horizontal when it is not folded, and, in the height direction 60, the support surface of the folding plate 18 is not higher than the support surface of the support platform 128, and along the width direction 40, the support platform 128 is located between the folding plate 18 and the discharge platform.

[0057] Specifically, when the clamping head 100 presses the end of the sheet against the support platform 128 during the folding process, it moves downward in the height direction 60 through the limiting component 20, and presses the area close to the end of the sheet against the discharge platform. When the folding is completed and the clamping head 100 moves in the width direction 40 to release the end of the sheet, the sheet is limited so that the sheet is in an accurate position, thereby facilitating the accurate conveying of the sheet to the next station of the three-dimensional bag forming machine, such as the bag insertion station, the gluing station, etc.

[0058] More specifically, the structure and arrangement of the limiting component 20 are not limited.

[0059] For example, in one embodiment, Figure 5As shown, the limiting component 20 includes a lifting member 126 fixedly mounted on the mounting frame 11, and a limiting plate 127 drivingly connected to the driving end of the lifting member 126, wherein the lifting member 126 can drive the limiting plate 127 to move along the height direction 60 and press the sheet material onto the unloading platform. It should be understood that the structure and setting method of the lifting member 126 are not limited, for example, it can be a lifting cylinder, an electric push rod, etc., which is not limited in this embodiment.

[0060] It should be noted that the limiting plate 127 is placed horizontally and fixedly mounted on the driving end of the lifting component 126 .

[0061] The structure and arrangement of the folding assembly 13 are further introduced below.

[0062] In one possible implementation, Figure 2 , Figure 4 and Figure 5 As shown, the second driving component 17 includes a second driving member 114 installed on the mounting frame 11, and the second driving member 114 is connected to the folding plate 18 through a transmission connection member 115; wherein, the sheet is conveyed to the supporting surface of the support table 14, and the end of the corresponding side of the sheet is aligned with the folding plate 18 in the height direction 60, and the second driving member 114 drives the transmission connection member 115 to link the folding plate 18 to fold the end of the corresponding side of the sheet along the edge of the clamping head 100 along the length direction 50 of the frame 30.

[0063] Specifically, since the end of the corresponding side of the sheet is aligned with the folding plate 18 in the height direction 60, it is ensured that after the edge of the sheet is folded, the folding line is parallel to the length direction 50, so that the connection strength at each position of the folding of the three-dimensional bag is the same, and the aesthetics of the folding of the three-dimensional bag after production is also ensured.

[0064] Specifically, the structure and arrangement of the second driving component 17 and the transmission connection member 115 are not limited.

[0065] In one possible implementation, Figure 6 As shown, the second driving component 114 includes a second driving motor installed on the mounting frame 11, a driving disk 116 fixedly mounted on the driving end of the second driving motor, and the transmission connecting component 115 includes a connecting rod 117, a cam 118, a rotating shaft 119, and a pushing connecting rod assembly 120 arranged at the end of the rotating shaft 119, which are sequentially connected in transmission.

[0066] Specifically, one end of the connecting rod 117 is rotatably connected to the edge of the driving disk 116, and the other end is rotatably connected to the protrusion of the cam 118. The rotating shaft 119 extends along the length direction 50 and is rotatably arranged on the mounting frame 11. The cam 118 is fixedly sleeved on the rotating shaft 119.

[0067] More specifically, the pushing connecting rod assembly 120 includes a first swing arm 121, a second swing arm 122, a connecting seat 123, a first arc arm 124 and a second arc arm 125. One end of the first swing arm 121 is fixedly connected to the rotating shaft 119, and the other end is rotatably connected to one end of the second swing arm 122. The other end of the second swing arm 122 is rotatably connected to the side of the lower end of the pressure plate 105 away from the support platform 14. The connecting seat 123 is fixedly installed on the mounting frame 11. One end of the first arc arm 124 is rotatably connected to the connecting seat 123, and the other end is rotatably connected to one end of the second arc arm 125. The other end of the second arc arm 125 is rotatably connected to the side of the lower end of the pressure plate 105 close to the support platform 14.

[0068] It should be understood that the number of the push-link assemblies 120 is not limited.

[0069] For example, in one embodiment, a push link assembly 120 is disposed at an end portion of one end of the rotating shaft 119 .

[0070] In another embodiment, a push link assembly 120 is disposed at the ends of both ends of the rotating shaft 119 .

[0071] The working principle of this folding assembly 13 is as follows: when the sheet is conveyed to the top of the support platform 14 and the folding plate 18, and the clamping head 100 clamps the end of the sheet, the second driving motor drives the driving disk 116 to rotate and links the connecting rod 117 to drive the cam 118 to gradually move away from the folding plate 18 and flip. The rotation of the cam 118 drives the rotating shaft to rotate and links the first swing arm 121 to swing. The first swing arm 121 swings and links the second swing arm 122 to swing and drive the folding plate 18 to move along the height direction 60; at the same time, the folding plate 18 drives the first arc arm 124 to swing relative to the connecting seat 123 during the process of moving along the height direction 60. The first arc arm 124 drives the second arc arm 125 to swing and links the folding plate 18 to gradually flip around the length direction 50, thereby realizing the gradual folding of the end of the sheet until the folding is completed.

[0072] To sum up, the working principle of the folding device 1 of this three-dimensional bag forming machine is as follows: when the sheet for making the three-dimensional bag is folded and the sheet is conveyed to the support platform 128, the discharge platform, and the folding plate 18, the transmission member 103 is driven by the first driving member 102 and the sliding seat 101 is linked to move along the width direction 40 toward the end of the corresponding side of the sheet. At the same time, the sliding seat 101 drives the pressure plate 105 to move along the width direction 40 toward the end of the corresponding side of the sheet. At this time, the guide protrusion 107 gradually moves toward the end of the sheet in the first guide section 110. After the guide protrusion 107 is introduced from the first guide section 110 to the second guide section 111, the sliding part 104 drives the pressure plate 105 to gradually move downward, so that the pressure plate 105 gradually approaches the end of the sheet. When the guide protrusion 107 completely enters the third guide section 112, the pressure plate 105 contacts the sheet and presses the end of the sheet against the support platform 14.

[0073] Further, the lifting component 126 drives the limit plate 127 to move downward in the height direction 60 and presses the sheet onto the discharge platform; at this time, the second drive motor drives the drive disk 116 to rotate and links the connecting rod 117 to drive the cam 118 to flip gradually away from the folding plate 18, the rotation of the cam 118 drives the rotating shaft to rotate and links the first swing arm 121 to swing, the first swing arm 121 swings and links the second swing arm 122 to swing and drive the folding plate 18 to move upward in the height direction 60; at the same time, the folding plate 18 drives the first arc arm 124 to swing relative to the connecting seat 123 in the process of moving upward in the height direction 60, the first arc arm 124 drives the second arc arm 125 to swing and links the folding plate 18 to gradually flip around the length direction 50, thereby realizing the gradual folding of the end of the sheet until the folding is completed.

[0074] Furthermore, when the sheet needs to be transported to the next workstation after the folding is completed, the transmission member 103 is driven by the first driving member 102 and the sliding seat 101 is linked to move along the width direction 40 and gradually away from the end of the sheet. At the same time, the sliding seat 101 drives the pressure plate 105 to move along the width direction 40 and gradually away from the end of the sheet. At this time, the guide protrusion 107 moves along the width direction 40 in the third guide section 112 and gradually away from the end of the sheet. After the guide protrusion 107 is introduced from the third guide section 112 into the second guide section 111, the sliding part 104 drives the pressure plate 105 to gradually move upward, so that the pressure plate 105 relaxes the end of the sheet; at this time, the lifting member 126 drives the limit plate 127 to move upward in the height direction 60 and presses the sheet on the discharge platform, and the sheet in a free state (folding is completed) is transported to the next workstation by the transportation component on the three-dimensional bag forming machine.

[0075] Furthermore, the second driving motor drives the driving disk 116 to continue to rotate and links the connecting rod 117 to drive the cam 118 to gradually approach the folding plate 18 to flip, the rotation of the cam 118 drives the rotating shaft to rotate and links the first swing arm 121 to swing, the first swing arm 121 swings and links the second swing arm 122 to swing and drive the folding plate 18 to move downward along the height direction 60; at the same time, the folding plate 18 drives the first arc arm 124 to swing relative to the connecting seat 123 during the process of moving downward along the height direction 60, the first arc arm 124 drives the second arc arm 125 to swing and links the folding plate 18 to gradually flip around the length direction 50 until the folding plate 18 is placed horizontally.

[0076] The above is an explanation of the implementation mode of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation mode. On the contrary, the purpose of introducing the utility model in conjunction with the implementation mode is to cover other options or modifications that may be extended based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, the above description will include many specific details. The present utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0077] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0078] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0079] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0080] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

Claims

1. A folding device for a three-dimensional bag forming machine, characterized in that: include: A pair of folding mechanisms are arranged on both sides of the frame of the three-dimensional bag forming machine in a width direction thereof, each of the folding mechanisms comprising a mounting frame mounted on the frame, a folding assembly and a pressing assembly mounted on the mounting frame; wherein, The pressing assembly comprises a first driving component and a pressing component mounted on the mounting frame, wherein the first driving component is in transmission connection with the pressing component, the pressing component is movably arranged on the mounting frame, and the first driving component drives the pressing component to translate along the width direction and links the pressing head of the pressing component to move away from or approach the support platform supporting the sheet material forming the three-dimensional bag; The folding assembly comprises a second driving component and a folding plate mounted on the mounting frame, wherein the second driving component is in driving connection with the folding plate and drives the folding plate to flip relative to the support platform along the length direction of the frame; and The sheet is conveyed to the supporting surface of the support table, the first driving component drives the clamping component to translate toward the support table and links the clamping head to move toward the sheet and press the end of the corresponding side of the sheet onto the support table, the second driving component drives the folding plate to fold the end of the corresponding side of the sheet along the edge of the clamping head along the length direction of the frame, the end of the corresponding side of the sheet is folded toward the clamping head and clamped between the clamping head and the folding plate.

2. The folding device of the three-dimensional bag forming machine according to claim 1, characterized in that: in, The pressing component includes a sliding seat movably arranged on the mounting frame along the width direction, and the pressing head movably arranged below the sliding seat along the height direction of the frame; The first driving component comprises a first driving member disposed on the mounting frame, wherein a driving end of the first driving member is drivingly connected to the sliding seat via a transmission member to drive the sliding seat to move along the width direction; and The pressing head includes a sliding part and a pressing plate arranged at the lower end of the sliding part, wherein the upper end of the sliding part is movably connected to the sliding seat along the height direction.

3. The folding device of the three-dimensional bag forming machine according to claim 2, characterized in that: in The first driving member is configured as a first driving motor fixedly mounted on the mounting frame; The transmission member comprises a rotating disk fixedly mounted on the driving end of the first driving motor, a transmission rod having one end rotatably connected to the edge of the rotating disk and the other end extending along the width direction and rotatably connected to the side of the sliding seat; and, The upper end of the sliding part is also movably arranged on the mounting frame through a guide component, and the guide component includes a guide groove arranged on the side wall of the mounting frame, and a guide protrusion arranged on the upper end of the sliding part and adapted to the guide groove; and, The first driving member drives the transmission member and links the sliding seat to translate along the width direction, the sliding seat drives the sliding part and links the guide protrusion to move in the guide groove, and drives the pressing plate to move away from or close to the support platform.

4. The folding device of the three-dimensional bag forming machine according to claim 3, characterized in that: The guide groove includes a first guide section, a second guide section and a third guide section which are sequentially connected in the width direction; wherein the first guide section is further away from the folding plate than the third guide section, both extend along the width direction, and in the height direction, the first guide section is further away from the support platform than the third guide section; and the second guide section extends obliquely to connect the two adjacent ends of the first guide section and the third guide section, so that the first guide section and the third guide section are connected through the second guide section.

5. The folding device of the three-dimensional bag forming machine according to claim 3, characterized in that: The pressing plate extends along the length direction, and a plurality of ribs extending along the height direction are arranged at intervals on a side of the pressing plate away from the supporting platform.

6. The folding device of the three-dimensional bag forming machine according to claim 3, characterized in that: The second driving component comprises a second driving member mounted on the mounting frame, and the second driving member is connected to the hemming plate through a transmission connection member; wherein, The sheet is conveyed to the supporting surface of the support table, and the end of the corresponding side of the sheet is aligned with the folding plate in the height direction. The second driving member drives the transmission connecting member to link the folding plate to fold the end of the corresponding side of the sheet along the edge of the pressing head around the length direction.

7. The folding device of the three-dimensional bag forming machine according to claim 6, characterized in that: The second driving component includes a second driving motor mounted on the mounting frame, a driving disk fixedly mounted on the driving end of the second driving motor, and the transmission connection component includes a connecting rod, a cam, a rotating shaft, and a pushing connecting rod assembly arranged at the end of the rotating shaft. One end of the connecting rod is rotatably connected to the edge of the driving disk, and the other end is rotatably connected to the protruding portion of the cam. The rotating shaft extends along the length direction and is rotatably arranged on the mounting frame. The cam is fixedly sleeved on the rotating shaft; and The pushing connecting rod assembly includes a first swing arm, a second swing arm, a connecting seat, a first arc arm and a second arc arm, one end of the first swing arm is fixedly connected to the rotating shaft, and the other end is rotatably connected to one end of the second swing arm, and the other end of the second swing arm is rotatably connected to a side of the lower end of the pressure plate away from the support platform, the connecting seat is fixedly installed on the mounting frame, one end of the first arc arm is rotatably connected to the connecting seat, and the other end is rotatably connected to one end of the second arc arm, and the other end of the second arc arm is rotatably connected to a side of the lower end of the pressure plate close to the support platform.

8. The folding device of the three-dimensional bag forming machine according to claim 2, characterized in that: The support platform includes a material discharging platform and a pair of support platforms, wherein the pair of support platforms are respectively mounted on the mounting frames of the corresponding folding mechanisms, and along the width direction, the material discharging platform is located between the pair of support platforms for placing the sheet; and the clamping assembly also includes a limiting component, which is mounted on the mounting frame and can move along the height direction; wherein, When the sheet material is conveyed to the supporting platform, the supporting surface of the folding plate, and the material placing platform, the limiting component moves downward along the height direction and presses the sheet material onto the material placing platform.

9. The folding device of the three-dimensional bag forming machine according to claim 8, characterized in that: The limiting component includes a lifting member fixedly mounted on the mounting frame, and a limiting plate transmission-connected to the driving end of the lifting member, wherein the lifting member can drive the limiting plate to move along the height direction and press the sheet material onto the unloading platform.

10. The folding device of the three-dimensional bag forming machine according to claim 2, characterized in that: The frame is provided with a first slide rail, the mounting frame is provided with a first slide groove matched with the first slide rail, and the mounting frame is slidably connected to the first slide rail of the frame through the first slide groove; and the mounting frame is provided with a second slide rail, the sliding seat is provided with a second slide groove matched with the second slide rail, and the sliding seat is slidably connected to the second slide rail of the mounting frame through the second slide groove; wherein, The first slide rail, the first slide groove, the second slide rail, and the second slide groove all extend along the width direction.

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