A bending device for insert sheet of stand-up pouch

Abstract

This utility model relates to a bending device for the bottom insert sheet of a stand-up pouch, belonging to the field of bag making equipment technology. It includes a fixed frame; an abutment plate connected to the fixed frame; a pressure roller frame movably mounted on the fixed frame; a pre-pressure roller rotatably mounted on the pressure roller frame, used to pre-press the bottom insert sheet in cooperation with the abutment plate; a connecting screw mounted on the fixed frame; an adjusting block movably fitted onto the connecting screw, the adjusting block being drivenly connected to the pressure roller frame for adjusting the position of the pressure roller frame; and a locking mechanism for locking the adjusted adjusting block and the pressure roller frame. This utility model can achieve precise pre-pressing of the bottom insert sheet and ensures stable position after adjustment through the locking mechanism, effectively avoiding the problems of inaccurate positioning by traditional photoelectric sensors, susceptibility to environmental influences, and positioning deviations caused by long-term use, thus improving bending accuracy and production efficiency.

Description

Technical Field

[0001] This application relates to the field of bag making equipment technology, and in particular to a bottom plate bending device for stand-up pouches. Background Technology

[0002] Stand-up pouches, a common packaging format, are widely used in the food and daily chemical industries due to their ability to stand independently and their excellent display effect. In the production process of stand-up pouches, the insert backing sheet is a key structural component that enables the bag to stand upright; its bending precision directly affects the final product's appearance and function. To meet market demands, stand-up pouch production lines are typically equipped with automated auxiliary equipment to precisely bend the insert backing sheet, providing pre-made backing sheets that meet process standards and prepare for subsequent bag forming and sealing processes.

[0003] However, existing stand-up pouch insert bending equipment generally suffers from several technical problems during the pre-bending process. For example, many devices use photoelectric sensors for positioning, but this method is easily affected by environmental factors such as dust accumulation and light source aging, leading to sensor misjudgments. Furthermore, if the equipment is used for a long time without timely calibration, the bending starting point of each insert sheet may shift. If positioning deviations are not detected promptly, a large number of waste sheets may be generated in a short period, resulting in significant material waste and reduced production efficiency. Simultaneously, some existing equipment has poor adaptability to insert sheets of different materials, thicknesses, or flatnesses. When changing material specifications during production, parameter adjustments are inconvenient and prone to operational errors, further exacerbating material waste. These problems not only increase production costs but also limit the flexibility and efficiency of stand-up pouch production.

[0004] Therefore, it is necessary to propose a bottom-bending device for stand-up pouches to solve the above problems. Utility Model Content

[0005] This application provides a bending device for inserting bottom pieces of stand-up pouches, in order to improve the technical problem in the related art where inaccurate positioning during the pre-bending process of the bending device for inserting bottom pieces of stand-up pouches leads to positioning deviations after long-term use.

[0006] This application provides a bending device for the bottom insert of a stand-up pouch, including a fixed frame; an abutment plate connected to the fixed frame; a pressure roller frame movably mounted on the fixed frame; a pre-pressure roller rotatably mounted on the pressure roller frame, the pre-pressure roller cooperating with the abutment plate to pre-press the bottom insert sheet; a connecting screw mounted on the fixed frame; an adjusting block movably fitted onto the connecting screw, the adjusting block being kinetically connected to the pressure roller frame for adjusting the position of the pressure roller frame; and a locking mechanism for locking the adjusted adjusting block and the pressure roller frame.

[0007] The technical solutions described above in this application embodiment have at least the following technical effects: they can achieve precise pre-pressing of the insert sheet. By adjusting the position of the pre-pressing wheel through the connecting screw and the adjusting block, and by ensuring the stability of the adjusted position through the locking mechanism, the problems of inaccurate positioning of traditional photoelectric sensors, susceptibility to environmental influences, and positioning deviation caused by long-term use are effectively avoided, thereby improving bending accuracy and production efficiency.

[0008] In this embodiment, the stand-up pouch insert bending device further includes a pressing assembly, which is located downstream of the pre-pressing roller. The pressing assembly includes a pressing roller and an abutment roller, and the pressing roller and the abutment roller cooperate to press and bend the insert sheet.

[0009] This technical solution adds a pressing and bending step after pre-pressing, ensuring a more robust and precise bending effect for the insert sheet, thus further improving product quality.

[0010] In this embodiment, downstream of the pressing roller and the abutment roller, there are also a first pressing roller and a second pressing roller.

[0011] This technical solution, employing a dual-pressure roller design, can apply a more uniform and stable pressure to the insert sheet, further improving the flatness and consistency of the bending.

[0012] In this embodiment, the bottom sheet bending device for the stand-up pouch includes a locking mechanism comprising a locking nut threadedly connected to the connecting screw and a fixing block connected to the pressure roller frame. The locking nut is used to abut against and lock the adjusting block, and the fixing block is used to lock the connection with the fixing frame.

[0013] This technical solution, through a dual locking mechanism of locking nuts and fixing blocks, ensures the positional stability of the adjusting block and pressure roller frame after adjustment, effectively preventing displacement caused by vibration or long-term operation, and guaranteeing bending accuracy.

[0014] In this embodiment, the fixing frame is provided with a locking groove, and the fixing block is engaged in the locking groove.

[0015] This technical solution, through the snap-fit ​​engagement between the locking groove and the fixing block, further enhances the stability of the locking mechanism, making it less likely for the pressure roller frame to shift position.

[0016] In this embodiment, the pressure roller frame is fixedly connected to the fixed block.

[0017] This technical solution simplifies the structure by fixing the pressure roller frame to the fixed block, improving the overall rigidity and stability, and ensuring the precise positioning of the pressure roller frame during operation.

[0018] In this embodiment, the self-standing bag uses a bottom sheet bending device, and the adjusting block is rotatably connected to the pressure roller frame.

[0019] This technical solution allows for a more flexible and convenient adjustment of the pressure roller frame's position by connecting the adjusting block to the roller frame, enabling operators to make precise adjustments according to actual needs.

[0020] In this embodiment, the stand-up pouch bottom sheet bending device further includes a first traction roller and a second traction roller disposed upstream of the preload roller.

[0021] This technical solution, by setting a traction roller upstream of the pre-compression roller, can ensure the stable conveying and positioning of the insert sheet before it enters the pre-compression area, reducing the risk of material deviation or jamming and improving the accuracy of feeding.

[0022] In this embodiment, the stand-up pouch bottom sheet bending device also includes a bracket, and the fixing frame is mounted on the bracket.

[0023] This technical solution provides stable support for the entire device, ensuring its overall stability during operation and reducing the impact of vibration on bending accuracy.

[0024] In this embodiment, the stand-up pouch bottom sheet bending device further includes a bracket and a connecting frame. The fixing frame and the connecting frame are both disposed on the bracket, and the first traction roller and the second traction roller are disposed on the connecting frame.

[0025] This technical solution, through the coordinated arrangement of the bracket, fixing frame, and connecting frame, makes the layout of the traction roller and bending mechanism more reasonable and compact, improving the integration and stability of the equipment, while also facilitating maintenance and operation.

[0026] Beneficial effects: This utility model discloses a bending device for the insert sheet of a stand-up pouch. By setting up a fixed frame, abutment plate, pressure roller frame, pre-pressure roller, connecting screw, adjusting block, and locking mechanism, it effectively solves the problems of inaccurate positioning, susceptibility to environmental influences, positioning deviations due to long-term use, and poor adaptability to different materials in the pre-bending process of existing bending devices for stand-up pouches. Specifically, the device pre-presses the insert sheet material through the cooperation of the pre-pressure roller and the abutment plate, and achieves precise adjustment of the pressure roller frame position through the connecting screw and adjusting block. More importantly, the locking mechanism can lock the adjusted adjusting block and pressure roller frame, thereby avoiding the problem of misjudgment caused by environmental factors such as dust cover and light source aging of traditional photoelectric sensors, and also solving the problem of bending start point deviation caused by long-term use without timely calibration. This mechanical precision adjustment and locking mechanism significantly improves the bending accuracy of the insert sheet material, effectively reduces waste sheets caused by positioning deviations, and thus reduces material waste and production costs. Meanwhile, through the cooperation of the adjustment block and locking mechanism, the equipment can more conveniently and accurately adapt to insert sheets of different materials, thicknesses or flatnesses, improving the adaptability and production flexibility of the equipment, avoiding operational errors caused by inconvenient parameter adjustment, and significantly improving the efficiency and product quality of stand-up pouch production. Attached Figure Description

[0027] Figure 1 A three-dimensional structural diagram of the stand-up pouch insert bending device provided in this application embodiment. Figure 1 ; Figure 2 A three-dimensional structural diagram of the stand-up pouch insert bending device provided in this application embodiment. Figure 2 ; Figure 3 A three-dimensional structural diagram of the pre-compression component provided in the embodiments of this application. Figure 1 ; Figure 4 A three-dimensional structural diagram of the pre-compression component provided in the embodiments of this application. Figure 2 ; Figure 5 This is an exploded structural diagram of the pressure roller frame and pre-pressure roller provided in the embodiments of this application.

[0028] The following are the labeling elements in the figure: 1. Bracket; 11. Connecting frame; 12. First traction roller; 13. Second traction roller; 2. Pre-compression assembly; 21. Pressure roller frame; 22. Pre-compression roller; 23. Connecting screw; 24. Locking nut; 25. Adjusting block; 26. Fixing frame; 27. Fixing bolt; 28. Fixing block; 29. ​​Locking groove; 3. Abutment plate; 4. Pressing assembly; 41. Pressing roller; 42. Abutment roller; 43. First pressing roller; 44. Second pressing roller. Detailed Implementation

[0029] Existing stand-up pouch insert bending equipment generally suffers from several technical problems during the pre-bending process. For example, many devices use photoelectric sensors for positioning, but this method is susceptible to environmental factors such as dust accumulation and light source aging, leading to sensor misjudgments. Furthermore, if the equipment is used for extended periods without timely calibration, the bending starting point of each insert sheet may shift. If this positioning deviation is not detected promptly, it can generate a large number of defective sheets in a short period, resulting in significant material waste and reduced production efficiency. Simultaneously, some existing equipment exhibits poor adaptability to insert sheets of different materials, thicknesses, or flatnesses. When material specifications need to be changed during production, parameter adjustments are inconvenient and prone to operational errors, further exacerbating material waste. These problems not only increase production costs but also limit the flexibility and efficiency of stand-up pouch production.

[0030] Based on this, in order to improve the technical problem in the related technology that the positioning of the bottom piece bending equipment for stand-up pouches is inaccurate during the pre-bending process, which leads to positioning deviations after long-term use, the embodiments of this application provide the following solution.

[0031] Please refer to the following: Figures 1 to 5 This application provides a bending device for the bottom insert of a stand-up pouch. The bending device includes a fixed frame 26; an abutment plate 3 connected to the fixed frame 26; a pressure roller frame 21 movably mounted on the fixed frame 26; a pre-pressure roller 22 rotatably mounted on the pressure roller frame 21, the pre-pressure roller 22 being used to pre-press the bottom insert material in cooperation with the abutment plate 3; a connecting screw 23 mounted on the fixed frame 26; an adjusting block 25 movably mounted on the connecting screw 23, the adjusting block 25 being kinetically connected to the pressure roller frame 21, and used to adjust the position of the pressure roller frame 21; and a locking mechanism for locking the adjusted adjusting block 25 and the pressure roller frame 21.

[0032] The stand-up pouch insert bending equipment provided in this application embodiment can achieve precise pre-pressing of the insert sheet and ensure stable positioning after adjustment through a locking mechanism. This effectively avoids the problems of inaccurate positioning, susceptibility to environmental influences, and positioning deviations caused by long-term use of traditional photoelectric sensors, thus improving bending accuracy and production efficiency. In this way, by replacing traditional photoelectric positioning with precise mechanical control, the three major pain points of unstable accuracy, environmental sensitivity, and high maintenance costs in the stand-up pouch insert bending process are fundamentally solved, ultimately achieving comprehensive benefits of improved product quality, increased production efficiency, and reduced equipment maintenance costs.

[0033] In this embodiment, the stand-up pouch bottom sheet bending device further includes a pressing component 4, which is located downstream of the pre-pressing roller 22. The pressing component 4 includes a pressing roller 41 and an abutting roller 42. The pressing roller 41 and the abutting roller 42 cooperate to press and bend the bottom sheet.

[0034] This configuration, by adding a clamping component 4 downstream of the pre-compression roller 22, allows the pre-compressed insert sheet to immediately enter the clamping component 4 for secondary bending. The cooperation between the clamping roller 41 and the abutment roller 42 applies a continuous and stable clamping force to the insert sheet, thereby completely bending the insert sheet to the required angle. This two-stage bending method, namely pre-compression followed by clamping, effectively solves the problem that a single pre-compression bending process cannot achieve complete bending of the insert sheet, ensuring bending accuracy and effect. The addition of a clamping bending stage after pre-compression ensures a more robust and precise bending effect for the insert sheet, further improving product quality.

[0035] In this embodiment, downstream of the pressing roller 41 and the abutting roller 42, there are also a first pressing roller 43 and a second pressing roller 44.

[0036] With this configuration, the two clamping rollers can be set to have the same diameter and material, or they can be set to different diameters or materials according to actual needs to achieve a specific clamping effect. The dual clamping roller design can apply a more uniform and stable clamping force to the insert sheet, further improving the flatness and consistency of the bending.

[0037] In this embodiment, the bottom sheet bending device for the stand-up pouch includes a locking mechanism comprising a locking nut 24 threadedly connected to the connecting screw 23 and a fixing block 28 connected to the pressure roller frame 21. The locking nut 24 is used to abut against and lock the adjusting block 25, and the fixing block 28 is used to lock the connection with the fixing frame 26.

[0038] This configuration, by locking the adjusting block 25 with the locking nut 24 and locking it to the fixing frame 26 with the fixing block 28, achieves double fixation of the pressure roller frame 21, effectively solving the problem of unstable position of the pressure roller frame 21. Compared with the traditional method of fixing by friction alone, the locking mechanism of this application has higher reliability and stability, which can effectively improve the quality and efficiency of bending the bottom sheet. Through the double locking mechanism of the locking nut 24 and the fixing block 28, the positional stability of the adjusting block 25 and the pressure roller frame 21 after adjustment is ensured, effectively preventing displacement caused by vibration or long-term operation, and ensuring bending accuracy.

[0039] In this embodiment, the fixing frame 26 is provided with a locking groove 29, and the fixing block 28 is engaged in the locking groove 29.

[0040] With this configuration, the locking groove 29 and the fixing block 28 engage, further enhancing the stability of the locking mechanism and making the position of the pressure roller frame 21 less prone to shifting.

[0041] In this embodiment, the pressure roller frame 21 is fixedly connected to the fixing block 28.

[0042] This configuration simplifies the structure and improves the overall rigidity and stability of the pressure roller frame 21, ensuring the precise positioning of the pressure roller frame 21 during operation.

[0043] In this embodiment, the self-standing bag uses a bottom sheet bending device, and the adjusting block 25 is rotatably connected to the pressure roller frame 21.

[0044] With this configuration, the rotatable connection between the adjusting block 25 and the pressure roller frame 21 makes the position adjustment of the pressure roller frame 21 more flexible and convenient, allowing operators to make fine adjustments according to actual needs.

[0045] In this embodiment, the bottom sheet bending device for stand-up pouches also includes a first traction roller 12 and a second traction roller 13 disposed upstream of the preload roller 22.

[0046] This configuration, with a traction roller positioned upstream of the pre-compression roller 22, ensures stable conveying and positioning of the insert sheet before it enters the pre-compression area, reducing the risk of material deviation or jamming and improving the accuracy of feeding.

[0047] In this embodiment, the stand-up pouch bottom sheet bending device also includes a bracket 1, and the fixing frame 26 is disposed on the bracket 1.

[0048] With this configuration, bracket 1 provides stable support for the entire device, ensuring its overall stability during operation and reducing the impact of vibration on bending accuracy.

[0049] In this embodiment, the stand-up pouch bottom sheet bending device further includes a bracket 1 and a connecting frame 11. The fixing frame 26 and the connecting frame 11 are both disposed on the bracket 1, and the first traction roller 12 and the second traction roller 13 are disposed on the connecting frame 11.

[0050] This configuration, with the coordinated arrangement of bracket 1, fixed frame 26 and connecting frame 11, makes the layout of the traction roller and bending mechanism more reasonable and compact, improves the integration and stability of the equipment, and facilitates maintenance and operation.

[0051] The working principle of the stand-up pouch insert bending device provided in this application embodiment is as follows: During the bending process of the bottom insert sheet using the stand-up pouch bottom insert sheet bending equipment, the bottom insert sheet is pulled to the pre-compression assembly 2 by the first traction roller 12 and the second traction roller 13 to perform a 90-degree pre-compression operation on the bottom insert sheet. The pressure roller frame 21 drives the pre-pressure roller 22 to press the bottom sheet downwards and abut against the abutment plate 3, thereby performing a 90-degree pre-pressure operation on the bottom sheet. Then, through two sets of pressure rollers and abutment roller 42, the bottom sheet is completely bent. There is a certain angle between the pressure roller and the abutment roller 42, which has a frictional force on the bottom sheet along its transmission direction, increasing the pressure roller area and better pressing the bottom sheet. Then, the first pressure roller 43 and the second pressure roller 44 perform the pressing operation on the bottom sheet. During the adjustment of the pre-compression range, the position of the adjusting block 25 on the connecting screw 23 is adjusted by loosening the locking nut 24. The adjusting block 25 is rotatably connected to the pressure roller frame 21, while the pressure roller frame 21 is fixedly connected to the fixing block 28. After adjusting the position of the adjusting block 25, the position of the pressure roller frame 21 is restricted by locking the fixing nut on the fixing block 28 with the locking groove 29 on the fixing frame 26. At the same time, the lateral position of the adjusting block 25 is restricted by tightening the locking nut 24, making it more stable and preventing displacement due to vibration in the later stage.

[0052] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bending device for the insert sheet of a stand-up pouch, characterized in that, include: Fixture (26); Abutment plate (3) is connected to the fixing frame (26); The pressure roller frame (21) is movably mounted on the fixed frame (26); A pre-compression roller (22) is rotatably mounted on the pressure roller frame (21), and the pre-compression roller (22) is used to cooperate with the abutment plate (3) to pre-compress the insert sheet; A connecting screw (23) is mounted on the fixing frame (26); An adjusting block (25) is movably mounted on the connecting screw (23). The adjusting block (25) is connected to the pressure roller frame (21) for adjusting the position of the pressure roller frame (21). A locking mechanism is used to lock the adjusted adjustment block (25) and the pressure roller frame (21) after adjustment.

2. The gusset folding apparatus for stand-up pouches according to claim 1, wherein It also includes a pressing assembly (4), which is located downstream of the pre-pressing roller (22). The pressing assembly (4) includes a pressing roller (41) and an abutting roller (42). The pressing roller (41) and the abutting roller (42) cooperate to press and bend the insert sheet.

3. The gusset folding apparatus for stand-up pouches according to claim 2, wherein Downstream of the pressing roller (41) and the abutting roller (42) are also a first pressing roller (43) and a second pressing roller (44).

4. The gusset folding apparatus for stand-up pouches according to claim 1, wherein The locking mechanism includes a locking nut (24) threadedly connected to the connecting screw (23) and a fixing block (28) connected to the pressure roller frame (21). The locking nut (24) is used to abut against and lock the adjusting block (25), and the fixing block (28) is used to lock the connection with the fixing frame (26).

5. The gusset folding apparatus of claim 4, wherein: The fixing frame (26) is provided with a locking groove (29), and the fixing block (28) is engaged in the locking groove (29).

6. The gusset folding apparatus of claim 4, wherein: The pressure roller frame (21) is fixedly connected to the fixing block (28).

7. The gusset folding apparatus of claim 1, wherein: The adjusting block (25) is rotatably connected to the pressure roller frame (21).

8. The gusset folding apparatus of claim 1, wherein: It also includes a first traction roller (12) and a second traction roller (13) disposed upstream of the preload wheel (22).

9. The gusset folding apparatus of claim 1, wherein, It also includes a bracket (1), and the fixing frame (26) is disposed on the bracket (1).

10. The gusset folding apparatus of claim 8, wherein: It also includes a bracket (1) and a connecting frame (11), the fixing frame (26) and the connecting frame (11) are both disposed on the bracket (1), and the first traction roller (12) and the second traction roller (13) are disposed on the connecting frame (11).

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