Square-bottom bag making machine with rear-mounted pasting handle

Abstract

The utility model relates to the field of packaging machinery, and discloses a square bottom bag making machine with rear-mounted sticking handles, which comprises a bag handle sticking mechanism and a connecting mechanism, the bag handle sticking mechanism is used for sticking bag handles on two bag surfaces of a formed bag body, and the bag handle sticking mechanism comprises a sticking handle bag body conveying component; the upstream of the connecting mechanism is in conveying connection with the square bottom forming mechanism, the connecting mechanism comprises a receiving station used for receiving formed bag bodies output from the upstream and an output station used for sending the formed bag bodies to the input end of the bag handle pasting mechanism, and the receiving station and the output station are connected through a transferring component. A discharging conveying component is arranged on the output station; the linear speed of the discharging conveying component is not smaller than that of the transferring component. The handle pasting step is carried out after the bag body is basically formed, the handle bag handle or the bag body is prevented from being scratched and damaged in the links of folding, pasting, bag bottom forming and the like, and the rejection rate is remarkably reduced; the matching speeds of the bag bottom forming mechanism and the iron bag handle mechanism can be different, and speed matching is achieved through the connecting mechanism.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery, and in particular to a bag-making machine for sealing square bottom bags. Background Technology

[0002] Existing square-bottom paper bag production lines typically employ a method where the handles are attached before the bag body is folded into a tube. This means the handles are pre-attached to the sheet material during output, followed by folding, sealing, cutting, and bottom forming to complete the bag production. This process has several significant drawbacks: the bag opening area is unevenly thick after the handles are attached. Because the handles are already attached to the sheet material, the opening area thickens considerably during subsequent folding due to the added adhesive and handle material. Furthermore, the extended handle ropes can easily interfere with equipment components during transport, such as being scraped or pulled by clamping mechanisms, causing the handles to detach or the bag to shift. This is particularly problematic during the tube forming and bottom folding stages, as the attached handles affect the bag yield and equipment stability.

[0003] In addition, because the sticking station is located in the high-speed tube forming section, the equipment space is limited, making it difficult to accurately stick the sticks and thus limiting the speed increase.

[0004] Therefore, there is an urgent need for a bag-making machine that places the sticking process after the square bottom is formed, and solves the technical problem of connecting the two speeds. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a bag-making machine for sealing square bottom bags.

[0006] To solve the above-mentioned technical problems, this utility model achieves its solution through the following technical solution:

[0007] A square bottom bag making machine with a rear-mounted handle includes a handle-attaching mechanism and a connecting mechanism. The handle-attaching mechanism is used to attach handles to both sides of the formed bag body and includes a handle-attaching bag body conveying component. The upstream of the connecting mechanism is connected to the square bottom forming mechanism and includes a receiving station for receiving the formed bag body output from the upstream and an output station for sending the formed bag body to the input end of the handle-attaching mechanism. The receiving station and the output station are connected by a transfer component, and the output station is equipped with a discharge conveying component. The linear speed of the discharge conveying component is not less than the linear speed of the transfer component.

[0008] This process changes the traditional "attach first, fold later" model, placing the handle attachment step after the bag body is basically formed. The connecting mechanism connects the bag bottom forming and handle attachment stages. By adjusting the speed, the speed of the bag bottom forming and handle attachment can be different, allowing users to easily adjust the speed. This completely avoids the problem of uneven bag opening thickness caused by attaching the handle in advance in traditional processes. It also prevents the handle or bag body from being scratched or damaged during folding, attaching, and bag bottom forming, significantly reducing the scrap rate. Through the combination of the connecting mechanism and the handle attachment mechanism, the handle attachment process is postponed. The linear speed of the discharge conveyor is greater than or equal to the linear speed of the transfer component, allowing the upstream bag body to be pulled away immediately, avoiding accumulation at the output station and achieving continuous high-speed production.

[0009] Preferably, the linear speed of the discharge conveyor component is equal to the linear speed of the bag-forming conveyor component conveying the formed bag; the interval time of the bag-forming conveyor component conveying the bag on the bag-forming mechanism is matched with the interval time of the transfer component conveying the bag to the output station. This allows the bag to be directly attached to the bag-forming mechanism without stopping, eliminating waiting time and further improving efficiency. The matching method can be a perfect speed match, or the bag-forming mechanism can be set to have an idle stroke to adapt to the linear speed of the discharge conveyor component.

[0010] Preferably, the formed bag remains at the output station, waiting for the discharge conveyor or transfer component. The discharge conveyor uses speed control to prevent the formed bag from stopping. The speed control strategy is adjusted according to the actual control accuracy of the servo motor. The bag can be selected in two modes at the output station: zero waiting or controllable waiting, balancing stability and processing efficiency.

[0011] Preferably, the system also includes a square bottom forming mechanism for folding and bonding the bag bottom to form a sealed square bottom; and a connecting mechanism for receiving the formed bag body output from the square bottom forming mechanism and transferring it to the bag handle attaching mechanism, wherein the linear velocity of the conveying component is equal to the conveying speed of the bag body output from the square bottom forming mechanism. With the square bottom forming mechanism and the connecting mechanism operating at the same speed, there is no relative slippage of the bag body during transfer. This allows for consistent conveying speeds of the conveying component and the square bottom forming mechanism, as well as consistent conveying speeds of the discharge conveying component and the bag handle attaching mechanism. It eliminates the need to completely unify the speeds to a single pace, facilitating adjustments to the production line speed by operators.

[0012] Preferably, the connecting mechanism is a steering mechanism, and the conveying direction of the square bottom forming mechanism is perpendicular to the conveying direction of the bag handle attaching mechanism. This makes the square bottom forming and the bag handle attaching mechanism arranged in an "L" shape, and with the bag handle attaching device's bag handle forming part, the whole machine forms a "U" shape, shortening the overall length of the machine.

[0013] Preferably, the transfer component and the discharge conveying component adopt any one of the following methods: pushing, clamping from above and below, bottom suction conveying, or robotic arm suction conveying.

[0014] Preferably, the transfer component and the discharge conveyor are both pushers mounted on different chains. The pushers form a cyclic movement path on the chain. After the transfer component delivers the formed bag to the output station, the discharge conveyor pushes the formed bag out of the output station. The transfer component and the discharge conveyor are staggered in position at the output station. The pusher circulation chain structure is simple and low in cost; the staggered handover of the two pushers at the output station ensures reliable operation and eliminates the need for complex synchronization control.

[0015] Preferably, the bag-applying mechanism includes a mounting frame, a limiting member, and an applicator. A bag conveyor turntable is mounted on the mounting frame, and the turntable has a first applicator station and a second applicator station arranged circumferentially. When the bag is positioned at the first and second applicator stations, the bag opening extends beyond the turntable and its orientation has rotated at least 90°. The limiting member extends circumferentially along the outer surface of the turntable, contacting the outer surface of the bag to keep it pressed against the turntable. The turntable is driven by a rotating power source. The rotating and / or limiting components drive the bag body to move, causing the bag body to be conveyed clockwise or counterclockwise along the bag body conveying turntable; the bag body conveying component for attaching the handle is the bag body conveying turntable or the limiting component; at least two sets of handle attaching devices correspond to the bag opening positions of the first handle attaching station and the second handle attaching station, respectively. The handle attaching device includes a material support component and a handle attaching component located on both sides of the bag opening. The handle attaching device also includes a bag handle conveying device for feeding the handle bag to the handle attaching component. The handle attaching component moves and presses a single handle bag onto the bag opening on the material support component. The bag body rotates more than 90° on the conveying turntable, allowing handles to be attached to both sides of the bag body separately. Compared to flipping the bag body, this saves floor space and facilitates double-sided handle attaching. The two sets of independent handle attaching devices act on two stations respectively, and double-sided attaching can be completed within the same turntable cycle, greatly improving efficiency. The limiting component, combined with the bag conveyor turntable, allows the bag opening to be suspended in mid-air, while the main body of the bag bottom is attached to the bag conveyor turntable. The bag can stably enter the first and second bag attaching stations in sequence for attaching the bag, without the interference of other mechanisms. After attaching the bag, the bag is formed and the handle will not affect other processes.

[0016] Preferably, the system also includes a conveyor line for continuously conveying the paper stock, wherein the conveyor line is provided sequentially along the direction of paper stock travel as follows: a paper roll unloading mechanism for releasing and tensioning the paper roll material; a tube folding accordion edge mechanism for folding the paper stock into a tube shape and forming a double-sided accordion edge structure, including a single-sided tube folding guide and accordion edge folding wheels on both sides; and a bag breaking mechanism for separating the continuous paper tube into individual high and low bag bodies along the bag opening cutting line.

[0017] Preferably, the conveyor line is also equipped with a bag opening pre-cutting mechanism and a bag bottom waste removal mechanism along the paper material's travel direction. The bag opening pre-cutting mechanism includes a pre-cutting blade to form a bag opening cut line with concave and convex parts on the paper material. The bag cutting mechanism includes a high-speed conveyor roller and a low-speed conveyor roller, which drive the front and rear bags to separate along the bag opening cut line due to speed difference. The bag bottom waste removal mechanism is used to remove excess waste material from the bottom of the bag to make the bag bottom flush. It includes a cutter, and a waste material adsorption chamber is set below the cutter. The waste material adsorption chamber is connected to a negative pressure source. This achieves efficient waste removal. The negative pressure adsorption chamber collects waste material, ensuring complete waste removal and keeping the work surface clean.

[0018] This utility model, by adopting the above technical solution, has significant technical effects:

[0019] This machine departs from the traditional pre-attach-then-fold model, placing the handle attachment step after the bag body is basically formed. This completely avoids the uneven bag opening thickness problem caused by attaching the handle in advance, a problem common in traditional processes. It also prevents damage to the handle or bag body during folding, attaching, and bottom forming, significantly reducing the scrap rate. The machine can operate continuously, and the speeds of the bottom forming mechanism and the handle mechanism can differ; speed matching is achieved simply through a connecting mechanism, improving efficiency. The various functional modules are easy to debug and maintain. The dual-station turntable handle attachment ensures symmetrical and secure handles, improving overall appearance quality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the connection between the connecting mechanism and the bag handle mechanism of this utility model;

[0021] Figure 2 This is a structural diagram of the connecting mechanism;

[0022] Figure 3 This is a side view of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of this utility model;

[0024] Figure 5 This is a top view of the bag body processing of this utility model.

[0025] The parts referred to by the numbers in the above attached diagrams are as follows: 100, conveyor line; 200, paper roll feeding mechanism; 300, bag mouth pre-cutting mechanism; 310, pre-cutting piercing; 400, tube forming and accordion edge folding mechanism; 410, single-sided tube folding guide; 420, accordion edge folding wheel; 500, bag breaking mechanism; 510, low-speed conveyor roller; 520, high-speed conveyor roller; 600, bag bottom waste removal mechanism; 660, cutter; 700, square bottom forming mechanism; 800, connecting mechanism; 810, receiving station; 820, output station; 830, transfer component; 840, material discharge conveying component; 900, bag handle attaching mechanism; 910, mounting frame; 920, bag body conveying turntable; 930, limiting component; 940, handle attaching device; 941, material support component; 942, handle attaching component; 943, bag handle conveying device. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0027] Example 1

[0028] A type of square bottom bag making machine with a rear-mounted handle, such as Figure 1-3 As shown, the device includes a bag-attaching mechanism 900 and a connecting mechanism 800. The bag-attaching mechanism 900 is used to attach bag handles to both sides of the formed bag body and includes a bag-attaching conveying component. The upstream of the connecting mechanism 800 is connected to the square bottom forming mechanism 700. The connecting mechanism 800 includes a receiving station 810 for receiving the formed bag body output from the upstream and an output station 820 for sending the formed bag body to the input end of the bag-attaching mechanism 900. The receiving station 810 and the output station 820 are connected by a transfer component 830. The output station 820 is provided with a discharge conveying component 840.

[0029] The linear velocity of the discharge conveying component 840 is not less than the linear velocity of the transfer component 830.

[0030] The linear speed of the discharge conveyor component 840 is equal to the linear speed of the bag body conveyor component conveying the formed bag; the interval time of the bag body conveyor component on the bag handle attaching mechanism 900 conveying the bag is matched with the interval time of the bag body conveyed by the transfer component 830 to the output station 820.

[0031] The formed bag body stays at the output station 820 waiting for the discharge conveyor 840 or transfer component 830. The discharge conveyor 840 prevents the formed bag body from stopping by adjusting the speed.

[0032] like Figure 4-5As shown, it also includes a square bottom forming mechanism 700 for folding and gluing the bottom of the bag to form a sealed square bottom; a connecting mechanism 800 for receiving the formed bag body output from the square bottom forming mechanism 700 and transferring it to the bag handle attaching mechanism 900, wherein the linear velocity of the transfer component 830 is equal to the conveying speed of the bag body output from the square bottom forming mechanism 700.

[0033] The connecting mechanism 800 is a steering mechanism, and the conveying direction of the square bottom forming mechanism 700 is perpendicular to the conveying direction of the bag handle attaching mechanism 900.

[0034] The transfer component 830 and the discharge conveying component 840 adopt any one of the following methods: pushing, vertical clamping, bottom suction conveying, or robotic arm suction conveying.

[0035] The transfer component 830 and the discharge conveying component 840 are both pushers set on different chains. The pushers form a cycle of motion path on the chain. After the transfer component 830 sends the formed bag to the output station 820, the discharge conveying component 840 pushes the formed bag out of the output station 820. The transfer component 830 and the discharge conveying component 840 are staggered in position on the output station 820.

[0036] like Figure 1 , 3 As shown, the bag-attaching mechanism 900 includes a mounting frame 910, a limiting member 930, and an attaching device 940. A bag-body conveying turntable 920 is mounted on the mounting frame 910. The turntable 920 has a first attaching station and a second attaching station arranged circumferentially. When the bag is positioned at the first and second attaching stations, the bag opening extends beyond the turntable 920 and the opening orientation has rotated at least 90°. The limiting member 930 extends circumferentially along the outer surface of the turntable 920, contacting the outer surface of the bag to keep it pressed against the outer surface of the turntable 920. The turntable 920 is driven by a rotational power source. The downward rotating and / or limiting member 930 drives the bag body to move, so that the bag body is conveyed along the bag body conveying turntable 920 in a clockwise or counterclockwise direction; the bag body conveying component for attaching the handle is the bag body conveying turntable 920 or the limiting member 930; at least two sets of attaching devices 940 correspond to the bag body opening positions of the first attaching station and the second attaching station, respectively. The attaching device 940 includes a material supporting member 941 and an attaching member 942 located on both sides of the bag opening. The attaching device 940 also includes a bag handle conveying device 943 for sending the handle of the handle bag to the attaching member 942. The attaching member 942 moves and presses the single handle bag onto the bag body opening on the material supporting member 941.

[0037] like Figure 4-5 As shown, it also includes a conveyor line 100 for continuous conveying of paper stock, and the conveyor line 100 is provided with the following components sequentially along the paper stock travel direction:

[0038] The paper roll feeding mechanism 200 is used to release and tension the paper roll material. Optionally, the paper roll is a paper roll with an aluminum film coating. The paper roll is pre-treated with an aluminum film coating to improve the heat insulation and moisture-proof function of the bag body. The tube forming and accordion edge folding mechanism 400 is used to fold the paper material into a tube shape and form a double-sided accordion edge structure, including a single-sided tube folding guide 410 and accordion edge folding wheels 420 on both sides. The bag cutting mechanism 500 is used to separate the continuous paper tube into individual high and low bag bodies along the bag opening cut line.

[0039] The conveyor line 100 is also equipped with a bag mouth pre-cutting mechanism 300 and a bag bottom waste removal mechanism 600 along the paper material travel direction. The bag mouth pre-cutting mechanism 300 includes a pre-cutting barb 310, which is used to form a bag mouth cutting line with concave and convex parts on the paper material. The bag cutting mechanism 500 includes a high-speed conveying roller 520 and a low-speed conveying roller 510. The high-speed conveying roller 520 and the low-speed conveying roller 510 drive the front and rear bags to separate along the bag mouth cutting line by speed difference. The bag bottom waste removal mechanism 600 is used to remove excess waste material from the bottom of the bag body to make the bag bottom flat. It includes a cutter 660. A waste material adsorption chamber is provided below the cutter 660. The waste material adsorption chamber is connected to a negative pressure source.

[0040] Working principle: The paper roll is unwound at the paper roll unwinding mechanism 200. The preceding continuous paper material is conveyed forward by the conveying rollers of the conveyor line 100. After passing through steps such as correction, the bag mouth pre-cutting mechanism 300 is used. The pre-cutting blade 310 is set on the roller shaft connected to the rotating power source. The rotation forms the bag mouth cutting line. The protruding part of the bag mouth of the previous bag becomes the concave part of the bag bottom of the next bag. At this time, the paper material that is still being continuously conveyed enters the tube forming accordion edge folding mechanism 400. One side of the bag body is folded to the other side. Under the action of the accordion edge folding wheels 420 on both sides, an accordion concave edge is formed. At the same time, under the action of the previous glue, the sides are overlapped and glued together. The subsequent continuous cylindrical bags are flattened and enter the bag cutting mechanism 500. The high-speed conveying roller 520 at the front presses down and carries the previous bag body, while the low-speed conveying roller 510 at the rear presses down and drives the next bag body. A speed difference is generated between each pair of bags to achieve separation. At this time, the bag mouth of the bag body has been completed, and then the bag bottom is processed. The bag then enters the bottom cleaning mechanism 600, where the bottom is flattened by the cutter. Excess waste enters the waste adsorption chamber and is sucked out by the negative pressure source for further processing. The bag then enters the square bottom forming mechanism 700 for indentation, bottom opening, and folding, finally producing a complete bag. If a handle attaching mechanism is present, the preceding bag handle conveying device 943 will send the formed continuous bag handles to the handle attaching mechanism 900.

[0041] The transfer component 830 uses a double-row chain pusher (the chain is not shown in the figure, only the sprockets are shown). The interval between adjacent pushers reaching the receiving station is equal, and the movement speed is consistent with the output rhythm of the square bottom forming mechanism 700. The discharge conveying component 840 above the output station 820 is also set on the chain. Its linear speed is equal to the outer circumferential linear speed of the subsequent bag conveying turntable 920. At the same time as the bag is conveyed at the conveying station 820 or after a short wait, the discharge conveying component 840 arrives and pushes the bag, and the bag is smoothly transferred.

[0042] The bag conveyor turntable 920 rotates until the bag reaches the attachment position that mates with the material support component 941. The bag opening is precisely between the material support component 941 and the attachment component 942. As the attachment component 942 rotates upward, it attracts the attachment. The attachment component 942 continues to descend with a slight angle to complete the attachment, and simultaneously or before this, the negative pressure attraction is released. The bag sequentially passes through the first attachment station and the second attachment station. The attachment components 942 at the first and second attachment stations respectively attach the attachment to both sides of the bag opening. The bag flips on the surface of the bag conveyor turntable 920. Since the bag opening rotates at least 90°, it is preferable that the attachment components 942 of both attachment devices are located above or diagonally above the material support component 941. When attaching the bag handle, the bag handle is diagonally above or above the bag, which facilitates attachment to the surface of the bag opening. Finally, after passing through two stations, the bag is sent out from the bag discharge outlet and detached from the bag conveyor turntable 920, and sent to the subsequent collection or packaging process.

[0043] The control system coordinates the rotation of the bag conveyor turntable 92, the start and stop of the rotation of the rotating turntable 94, the cutting timing, and the on / off of negative pressure to ensure strict synchronization of each workstation.

[0044] In the description of this utility model, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A square bottom bag making machine with a rear-mounted handle, characterized in that: include A bag-attaching mechanism (900) is used to attach bag handles to both sides of a formed bag body. The bag-attaching mechanism (900) includes a bag-body conveying component for attaching handles. The connecting mechanism (800) is connected upstream to the square bottom forming mechanism (700). The connecting mechanism (800) includes a receiving station (810) for receiving the formed bag body output from upstream and an output station (820) for sending the formed bag body to the input end of the bag handle attaching mechanism (900). The receiving station (810) and the output station (820) are connected by a transfer component (830). The output station (820) is provided with a discharge conveying component (840). The linear velocity of the discharge conveying component (840) is not less than the linear velocity of the transfer component (830).

2. A square bottom bag making machine with a rear-mounted handle as described in claim 1, characterized in that: The linear speed of the discharge conveying component (840) is equal to the linear speed of the bag body conveying component for conveying the formed bag; the interval time of the bag body conveying component on the bag handle mechanism (900) for conveying the bag is matched with the interval time of the transfer component (830) for conveying the bag to the output station (820).

3. A square bottom bag making machine with a rear-mounted handle as described in claim 1, characterized in that: The formed bag body stays at the output station (820) waiting for the discharge conveying component (840) or transfer component (830). The discharge conveying component (840) uses speed matching to prevent the formed bag body from stopping.

4. A square bottom bag making machine with a rear-mounted handle according to any one of claims 1-3, characterized in that: It also includes a square bottom forming mechanism (700) for folding and gluing the bottom of the bag to form a sealed square bottom; The connecting mechanism (800) is used to receive the formed bag body output by the square bottom forming mechanism (700) and transfer it to the bag attaching mechanism (900), wherein the linear velocity of the transfer component (830) is equal to the conveying speed of the bag body output by the square bottom forming mechanism (700).

5. A square bottom bag making machine with a rear-mounted handle as described in claim 4, characterized in that: The connecting mechanism (800) is a steering mechanism, and the conveying direction of the square bottom forming mechanism (700) is perpendicular to the conveying direction of the bag handle attaching mechanism (900).

6. A square bottom bag making machine with a rear-mounted handle as described in claim 1, characterized in that: The transfer component (830) and the discharge conveying component (840) adopt any one of the following methods: pushing, clamping from above and below, bottom suction conveying, or robotic arm suction conveying.

7. A square bottom bag making machine with a rear-mounted handle as described in claim 6, characterized in that: The transfer component (830) and the discharge conveying component (840) are both pushers set on different chains. The pushers form a cycle of motion path on the chain. After the transfer component (830) sends the formed bag to the output station (820), the discharge conveying component (840) pushes the formed bag out of the output station (820). The positions of the transfer component (830) and the discharge conveying component (840) on the output station (820) are staggered.

8. A square bottom bag making machine with a rear-mounted handle as described in claim 1, characterized in that: The bag-attaching mechanism (900) includes a mounting bracket (910); A bag conveying turntable (920) is installed on a mounting frame (910). The bag conveying turntable (920) is circumferentially provided with a first attaching station and a second attaching station. When the bag is located at the first attaching station and the second attaching station, the bag opening extends out of the bag conveying turntable (920) and the bag opening orientation is rotated at least 90°. The limiting member (930) extends circumferentially along the outer surface of the bag conveying turntable (920). The limiting member (930) contacts the outer surface of the bag to keep the bag pressed against the outer surface of the bag conveying turntable (920). The bag conveying turntable (920) rotates under the drive of a rotary power source or / and the limiting member (930) drives the bag to move, so that the bag is conveyed along the bag conveying turntable (920) in a clockwise or counterclockwise direction. The bag conveying component is either a bag conveying turntable (920) or a limiting component (930). The bag-sticking device (940) includes at least two sets of bag-sticking devices (940) corresponding to the bag opening positions of the first bag-sticking station and the second bag-sticking station, respectively. The bag-sticking device (940) includes a material-supporting component (941) and a bag-sticking component (942) located on both sides of the bag opening. The bag-sticking device (940) also includes a bag-sticking conveying device (943) for feeding the bag handle to the bag-sticking component (942). The bag-sticking component (942) moves and presses a single bag onto the bag opening on the material-supporting component (941).

9. A square bottom bag making machine with a rear-mounted handle as described in claim 1, characterized in that: It also includes a conveyor line (100) for continuous conveying of paper stock, wherein the conveyor line (100) is provided with the following components sequentially along the paper stock travel direction: Paper roll unloading mechanism (200) is used to release and tension paper roll raw material; The tube folding accordion edge mechanism (400) is used to fold paper into a tube shape and form a double-sided accordion edge structure, including a single-sided tube folding guide (410) and accordion edge folding wheels (420) on both sides. The bag-breaking mechanism (500) is used to separate a continuous paper roll into individual high and low bag bodies along the bag opening cut line.

10. A square bottom bag making machine with a rear-mounted handle as described in claim 1, characterized in that: The conveyor line (100) is also equipped with [equipment / features] along the direction of paper material travel. The bag opening pre-cutting mechanism (300) includes a pre-cutting dagger (310) for forming a bag opening cut line with a concave and a convex portion on the paper stock; The bag breaking mechanism (500) includes a high-speed conveying roller (520) and a low-speed conveying roller (510). The high-speed conveying roller (520) and the low-speed conveying roller (510) drive the front and rear bags to separate along the bag opening cutting line by speed difference. The bag bottom cleaning mechanism (600) is used to remove excess waste from the bottom of the bag to make the bottom of the bag flat. It includes a cutter (660) and a waste adsorption chamber is provided below the cutter (660). The waste adsorption chamber is connected to a negative pressure source.

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