A roll material cutting device for a bottom-insertion self-standing bag forming machine

Abstract

This utility model relates to a roll material cutting device for a bottom-mounted stand-up pouch forming machine, belonging to the field of bag making equipment technology. It includes a connecting frame with a threaded rod fixedly mounted on it. A cutter holder is mounted on the threaded rod via a longitudinal limiting component for adjusting the longitudinal position of the cutter holder. The cutter holder is rotatably mounted on the longitudinal limiting component, and the angle between the cutter holder and the longitudinal limiting component is limited by a circumferential limiting component. A transverse limiting component is also provided on the cutter holder to restrict the transverse position of the cutter. This utility model can achieve cutter adjustment through transverse, longitudinal, and circumferential limiting components, avoiding the problem of easy displacement.

Description

Technical Field

[0001] This application relates to the field of bag making equipment technology, and in particular to a roll material cutting device for a bottom-insertion self-standing bag forming machine. Background Technology

[0002] Stand-up pouch cutting equipment is a key pre-processing and forming device in the packaging bag production chain. It is a specialized device for precisely cutting, shaping, or edge-processing unformed packaging bag substrate sheets. Its core function is to transform large-size, continuous sheet raw materials into standardized "blanks" that meet the requirements of subsequent bag-making processes, or to directly complete the cutting of irregularly shaped or specially structured packaging bags. It is widely used in packaging fields such as food, daily chemicals, pharmaceuticals, and logistics.

[0003] On December 12, 2023, the applicant filed a Chinese invention patent application with publication number CN 117207596 A, proposing a manufacturing process for a stand-up pouch with insert bottom. In step 2, the process involves cutting the front and back bag sheets, which can be achieved by using only one cutting blade to cut the front and back bags in the middle. However, our company has made an innovative invention to propose a method that integrates the front and back bags with the insert bottom bag, requiring the front and back bags and the insert bottom bag to be separated. For different stand-up pouches with insert bottoms, the size of the insert bottom bag varies, so the position and angle of the cutting blade need to be adjusted.

[0004] Therefore, it is necessary to propose a roll material cutting device for a bottom-insertion self-standing bag forming machine to solve the above problems. Utility Model Content

[0005] This application provides a roll material cutting device for a bottom-mounted stand-up pouch forming machine. In order to improve the technical problems of existing adjustment methods in related technologies, such as slow response speed and easy displacement, resulting in low equipment changeover efficiency, high labor costs and large fluctuations in product yield, the application aims to address these issues.

[0006] This application provides a roll material cutting device for a bottom-mounted stand-up pouch forming machine, including a connecting frame, a threaded rod fixedly mounted on the connecting frame, a blade holder mounted on the threaded rod via a longitudinal limiting component for adjusting the longitudinal position of the blade holder, the blade holder being rotatably mounted on the longitudinal limiting component, the blade holder and the longitudinal limiting component being limited at an angle by a circumferential limiting component, and a transverse limiting component also being mounted on the blade holder for limiting the transverse position of the cutting blade.

[0007] The technical solutions described above in this application embodiment have at least the following technical effects: during the cutting process of the roll material cutting equipment of the bottom-mounted self-standing bag forming machine, the longitudinal position of the blade holder is adjusted by the longitudinal limiting component on the threaded rod, the circumferential angle is limited by the circumferential limiting component on the longitudinal limiting component, and the lateral position of the cutting blade is limited by the lateral limiting component. This can ensure that the cutting accuracy is controllable, adapt to multiple specifications of products, and ensure the stable operation of the equipment.

[0008] In this embodiment, the longitudinal limiting component includes an adjusting block threaded on the threaded rod, and a locking nut threaded on the threaded rod to cooperate with the adjusting block to lock the longitudinal position of the adjusting block.

[0009] The core objective of this technical solution is to determine the final position of the tool holder along the longitudinal direction of the threaded rod. Serving as the connecting medium between the tool holder and the threaded rod, it converts rotational motion into linear longitudinal movement through its threaded engagement with the threaded rod. When the operator rotates the adjusting block, the adjusting block can move smoothly along the threaded trajectory of the threaded rod, thereby synchronously adjusting the longitudinal position of the tool holder.

[0010] In this embodiment, the tool holder is rotatably mounted on the adjusting block, and the tool holder has a threaded hole. The circumferential limiting component includes a screw threaded in the threaded hole, and a locking block is rotatably connected to one end of the screw near the adjusting block. The locking block abuts against the adjusting block to limit the rotation angle of the tool holder.

[0011] This technical solution involves rotating a screw to move a locking block, which is rotatably connected to the screw. The locking block has at least one guide block to restrict its rotation direction. The locking block is locked to the adjusting block, thereby restricting the rotation of the tool holder.

[0012] In this embodiment, a first limiting tooth is provided on one end of the locking block near the adjusting block, and a second limiting tooth is provided on the adjusting block at the position corresponding to the first limiting tooth.

[0013] This technical solution replaces planar contact with toothed engagement, upgrading from simple pressure locking to dual locking of pressure and toothed engagement. It uses the side blocking of the teeth to counteract the longitudinal movement or circumferential torsion force that the cutter holder may generate during the cutting process, preventing relative displacement between the adjusting block and the locking block.

[0014] In this embodiment, a handle is also fixedly provided on the end of the screw away from the adjusting block.

[0015] With this technical solution, the core function of the screw is to drive the locking block to move, thereby realizing the angle locking or adjustment of the tool holder. The handle, as the operating end of the screw, essentially solves the problem of difficulty in applying force and controlling speed when directly rotating the screw through human-computer interaction optimization.

[0016] In this embodiment, the blade holder is provided with a lateral adjustment groove, and the lateral limiting component includes a connecting blade holder disposed in the adjustment groove. A connecting threaded rod is fixedly disposed on the connecting blade holder. The connecting threaded rod is disposed in the lateral adjustment groove and is locked by a limiting nut when adjusted to a suitable position to limit its lateral displacement. The cutting blade is disposed on the connecting blade holder.

[0017] This technical solution provides a linear moving track for the connecting knife holder, allowing the cutting blade to slide freely along the adjustment groove. The guide thread of the connecting threaded rod is adapted to the adjustment groove to prevent offset during sliding, enabling flexible adjustment of the cutting blade's lateral position and precise location of the required lateral cutting reference. Once the connecting knife holder reaches the target position, the limiting nut is tightened. The axial pressure of the nut and the connecting threaded rod presses the connecting knife holder firmly onto the knife holder. Through the combined action of friction and pressure, the lateral displacement of the connecting knife holder and the cutting blade along the adjustment groove is limited, offsetting the lateral impact force on the cutting blade during the cutting process.

[0018] In this embodiment, the tool holder is also provided with a threaded abutment nut that abuts against the screw to prevent the screw from loosening.

[0019] This technical solution involves threading a contact nut onto the tool holder and having it abut against the screw. The core function of this nut is to create a double lock through physical tightening, thus solving the problem of loosening of the screw due to vibration and stress during long-term use.

[0020] In this embodiment, the threaded rod is provided with two sets of blade holders for cutting the bottom bag, and a spare blade holder is provided between the two sets of blade holders.

[0021] This technical solution allows for adjustment of the position between the two blade holders, enabling timely replacement of the spare blade holder in case of a problem with the cutting blade, thus avoiding delays in work. Attached Figure Description

[0022] Figure 1 A three-dimensional structural schematic diagram of the roll material cutting equipment for the bottom-insertion self-standing bag forming machine provided in the embodiments of this application; Figure 2 A three-dimensional structural diagram of the tool holder provided in an embodiment of this application; Figure 3 This is an exploded structural diagram of the tool holder provided in an embodiment of this application; Figure 4This is a three-dimensional structural diagram of the circumferential limiting component provided in an embodiment of this application.

[0023] The following are the labeling elements in the figure: 1. Connecting frame; 11. Threaded rod; 12. Cutting knife; 13. Knife holder; 2. Longitudinal limiting assembly; 21. Adjusting block; 22. Locking nut; 3. Circumferential limiting assembly; 31. Screw; 32. Locking block; 33. First limiting tooth; 34. Second limiting tooth; 35. Handle; 36. Abutting nut; 4. Lateral limiting assembly; 41. Lateral adjusting groove; 42. Connecting knife holder; 43. Connecting threaded rod; 44. Limiting nut. Detailed Implementation

[0024] In the production of packaging products such as bags and stand-up pouches, the ease of adjustment of cutting equipment directly affects changeover efficiency, product yield, and labor costs. In the existing roll cutting equipment of bottom-insertion stand-up pouch forming machines, the positioning and calibration of the cutting equipment, such as sheet feeding positioning and printed pattern alignment positioning, directly affect the product dimensional accuracy. Existing adjustment methods have problems such as slow response speed and easy displacement, resulting in low equipment changeover efficiency, high labor costs, and large fluctuations in product yield. The yield in the initial stage of changeover is low, which is difficult to meet the current production needs of the packaging industry for "rapid response, multiple varieties, and high precision". It has also become a key bottleneck restricting the upgrading of cutting equipment to intelligence and automation.

[0025] Based on this, in order to improve the technical problems of slow response speed and easy displacement of existing adjustment methods in related technologies, which lead to low equipment changeover efficiency, high labor costs and large fluctuations in product yield, the embodiments of this application provide the following solutions.

[0026] Please refer to the following: Figures 1 to 4 This application provides a roll material cutting device for a bottom-mounted stand-up pouch forming machine. The roll material cutting device for the bottom-mounted stand-up pouch forming machine includes a connecting frame 1, a threaded rod 11 fixedly mounted on the connecting frame 1, a blade holder 13 mounted on the threaded rod 11 by a longitudinal limiting component 2 for adjusting the longitudinal position of the blade holder 13, the blade holder 13 being rotatably mounted on the longitudinal limiting component 2, and the blade holder 13 and the longitudinal limiting component 2 being limited at their angle by a circumferential limiting component 3, and a transverse limiting component 4 also being mounted on the blade holder 13 for limiting the transverse position of the cutting blade 12.

[0027] The roll material cutting equipment for the bottom-mounted stand-up pouch forming machine provided in this application embodiment, during the cutting process, adjusts the longitudinal position of the cutter holder 13 on the threaded rod 11 via the longitudinal limiting component 2, restricts its circumferential angle via the circumferential limiting component 3 on the longitudinal limiting component 2, and restricts the lateral position of the cutter 12 via the transverse limiting component 4. This ensures controllable cutting accuracy, adaptability to multiple product specifications, and stable equipment operation. Thus, it achieves parameterization, adjustability, and high stability in the stand-up pouch cutting process, solving the limitations of single-specification equipment, ensuring cutting accuracy and equipment reliability, and ultimately bringing comprehensive benefits to enterprises, including cost reduction, quality improvement, and efficiency enhancement.

[0028] In this embodiment, the longitudinal limiting component 2 includes an adjusting block 21 threaded on a threaded rod 11, and a locking nut 22 threaded on the threaded rod 11, which cooperates with the adjusting block 21 to lock the longitudinal position of the adjusting block 21.

[0029] With this configuration, the core objective of the longitudinal limiting component 2 is to determine the final position of the tool holder 13 along the longitudinal direction of the threaded rod 11. Serving as the connection medium between the tool holder 13 and the threaded rod 11, it converts rotational motion into linear longitudinal movement through its threaded engagement with the threaded rod 11. When the operator rotates the adjusting block 21, the adjusting block 21 can move smoothly along the threaded trajectory of the threaded rod 11, thereby synchronously adjusting the longitudinal position of the tool holder 13. In this way, the locking nut 22, through the principle of axial tightening, eliminates the gap between the adjusting block 21 and the threaded rod 11, preventing the adjusting block 21 from moving axially. Simultaneously, the self-locking property of the thread allows it to remain locked for a long time, preventing loosening even during continuous operation and vibration of the equipment.

[0030] In this embodiment, the tool holder 13 is rotatably mounted on the adjusting block 21. The tool holder 13 has a threaded hole. The circumferential limiting component 3 includes a screw 31 threaded in the threaded hole. A locking block 32 is provided on one end of the screw 31 near the adjusting block 21. The locking block 32 abuts against the adjusting block 21 to limit the rotation angle of the tool holder 13.

[0031] With this configuration, rotating the screw 31 moves the locking block 32, which is rotatably connected to the screw 31. At least one guide block on the locking block 32 restricts its rotation direction. The locking block 32 is locked to the adjusting block 21, thus limiting the rotation of the blade holder 13. This achieves precise control over the rotation of the blade holder 13, directly addressing the pain points of easy deviation, unreliable locking, and complex operation during cutting. It solves the core problem of angular deviation in stand-up pouch cutting and also improves the adaptability and durability of the equipment. The angle adjustment and locking actions can be completed by simply rotating the screw 31. When the screw 31 is rotated forward, the locking block 32 moves toward the adjusting block 21, first pushing the adjusting block 21 to calibrate the angle of the tool holder 13, and continuing to rotate will tighten and lock it. When the screw 31 is rotated in the opposite direction, the locking block 32 disengages from the adjusting block 21, and the tool holder 13 can be freely adjusted in angle without disassembling any parts. The surface contact between the locking block 32 and the adjusting block 21 can evenly distribute the torsional force across the entire contact surface, avoiding cracking or denting of parts due to excessive local stress, and extending the service life of the adjusting block 21 and the locking block 32.

[0032] In this embodiment, a first limiting tooth 33 is provided on one end of the locking block 32 near the adjusting block 21, and a second limiting tooth 34 is provided on the adjusting block 21 at the position corresponding to the first limiting tooth 33.

[0033] This configuration replaces planar contact with toothed engagement, upgrading from simple pressure-based locking to a dual locking system of pressure and toothed engagement. The side surfaces of the teeth counteract any longitudinal movement or circumferential torsional force that may occur during cutting, preventing relative displacement between the adjusting block 21 and the locking block 32. Thus, the engagement between the locking block 32 and the adjusting block 21 is upgraded from a passive locking system dependent on friction to an active locking system based on physical engagement. Its core value lies in ensuring absolute locking and zero displacement while achieving precise positioning, rapid adjustment, and long-term durability.

[0034] In this embodiment, a handle 35 is also fixedly provided on the end of the screw 31 away from the adjusting block 21.

[0035] With this configuration, the core function of the screw 31 is to move the locking block 32, thereby locking or adjusting the angle of the tool holder 13. The handle 35, as the operating end of the screw 31, essentially solves the problem of difficulty in applying force and controlling speed when directly rotating the screw 31 through human-machine interaction optimization. In this way, the length of the handle 35 forms a lever arm. When the operator rotates the handle 35, the torque principle of lever arm × force can be used to rotate the screw 31 with less force, without having to directly turn the smooth screw 31 by hand. This significantly reduces the intensity of operation, especially when the locking block 32 and the adjusting block 21 are tightly pressed together and the rotation resistance of the screw 31 is large.

[0036] In this embodiment, the blade holder 13 is provided with a transverse adjustment groove 41, and the transverse limiting component 4 includes a connecting blade holder 42 disposed in the adjustment groove. A connecting threaded rod 43 is fixedly disposed on the connecting blade holder 42. The connecting threaded rod 43 is disposed in the transverse adjustment groove 41. When adjusted to a suitable position, it is locked by a limiting nut 44 to limit its transverse displacement. The cutting blade 12 is disposed on the connecting blade holder 42.

[0037] With this configuration, the transverse adjustment groove 41 provides a linear moving track for the connecting blade holder 42. The connecting blade holder 42 drives the cutting blade 12 to slide freely along the adjustment groove. The guide thread rod 11 of the connecting threaded rod 43 is adapted to the adjustment groove to avoid deviation during sliding, thereby achieving flexible adjustment of the transverse position of the cutting blade 12 and accurately finding the required transverse cutting reference. After the connecting blade holder 42 moves to the target position, the limit nut 44 is tightened. The axial pressure of the nut and the thread of the connecting threaded rod 43 is used to press the connecting blade holder 42 onto the blade holder 13. Through the dual action of friction and pressure, the transverse displacement of the connecting blade holder 42 and the cutting blade 12 along the adjustment groove is restricted, and the transverse impact force on the cutting blade 12 during the cutting process is offset.

[0038] In this embodiment, the tool holder 13 is also provided with a threaded nut 36 that abuts against the screw 31 to prevent the screw 31 from loosening.

[0039] With this configuration, the abutment nut 36, which is threaded onto the tool holder 13 and abuts against the screw 31, serves as a double lock through physical tightening, thus solving the problem of loosening of the screw 31 due to vibration and stress during long-term use.

[0040] 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 roll material cutting device for a bottom-insertion self-standing bag forming machine, comprising a connecting frame (1), characterized in that: A threaded rod (11) is fixedly installed on the connecting frame (1). The knife holder (13) is installed on the threaded rod (11) through the longitudinal limiting component (2) for adjusting the longitudinal position of the knife holder (13). The knife holder (13) is rotatably installed on the longitudinal limiting component (2). The knife holder (13) and the longitudinal limiting component (2) are limited at their angle by the circumferential limiting component (3). A transverse limiting component (4) is also provided on the knife holder (13) for limiting the transverse position of the cutting knife (12).

2. The roll material cutting equipment for a bottom-insertion self-standing bag forming machine according to claim 1, characterized in that: The longitudinal limiting component (2) includes an adjusting block (21) threaded on the threaded rod (11), and a locking nut (22) threaded on the threaded rod (11) to cooperate with the adjusting block (21) to lock the longitudinal position of the adjusting block (21).

3. The roll material cutting equipment for a bottom-insertion self-standing bag forming machine according to claim 2, characterized in that: The tool holder (13) is rotatably mounted on the adjusting block (21). The tool holder (13) has a threaded hole. The circumferential limiting component (3) includes a screw (31) threaded in the threaded hole. A locking block (32) is rotatably mounted on one end of the screw (31) near the adjusting block (21). The locking block (32) abuts against the adjusting block (21) to limit the rotation angle of the tool holder (13).

4. The roll material cutting equipment for a bottom-insertion self-standing bag forming machine according to claim 3, characterized in that: The locking block (32) has a first limiting tooth (33) on one end near the adjusting block (21), and the adjusting block (21) has a second limiting tooth (34) at the position corresponding to the first limiting tooth (33).

5. The roll material cutting equipment for a bottom-insertion self-standing bag forming machine according to claim 4, characterized in that: A handle (35) is also fixedly installed on the end of the screw (31) away from the adjusting block (21).

6. The roll material cutting equipment for a bottom-insertion self-standing bag forming machine according to claim 1, characterized in that: The blade holder (13) is provided with a transverse adjustment groove (41). The transverse limiting component (4) includes a connecting blade holder (42) disposed in the adjustment groove. A connecting threaded rod (43) is fixedly disposed on the connecting blade holder (42). The connecting threaded rod (43) is disposed in the transverse adjustment groove (41). When adjusted to a suitable position, it is locked by a limiting nut (44) to limit its transverse displacement. The cutting blade (12) is disposed on the connecting blade holder (42).

7. The roll material cutting equipment for a bottom-insertion type stand-up pouch forming machine according to claim 5, characterized in that: The tool holder (13) is also provided with a threaded nut (36) that abuts against the screw (31) to prevent the screw (31) from loosening.

8. The roll material cutting equipment for a bottom-insertion self-standing bag forming machine according to claim 1, characterized in that: The threaded rod (11) is provided with two sets of knife holders (13) for cutting the bottom bag, and a spare knife holder (13) is provided between the two sets of knife holders (13).

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