A paper bag packaging pre-treatment equipment and a method of using the same

Abstract

The application discloses a paper bag packaging and packing pretreatment equipment and a use method thereof. The equipment comprises an automatic indexing and stacking part and a rolling transmission part. The automatic indexing and stacking part comprises a paper bag stacking mechanism and a paper bag turning mechanism. The paper bag stacking mechanism is used for automatically stacking paper bags after processing into paper bag stacks containing a set number of paper bags. The paper bag turning mechanism is used for turning the stacked paper bag stacks at intervals, so that the directions of adjacent paper bag stacks are opposite. The rolling transmission part comprises a rolling clamping mechanism, a rolling driving mechanism and a rack. The rolling clamping mechanism is installed on the rack and comprises a plurality of paper bag transfer clamping positions. The stacked paper bag stacks from the automatic indexing and stacking part are clamped on the paper bag transfer clamping positions. The stacked paper bag stacks are rolled and transmitted to a paper bag packaging and packing process through the rotation of the rolling clamping mechanism, so that the number of each stack of paper bags is consistent, the direction is correct, the flatness in the transmission process is ensured, and the packaging efficiency and quality are improved.

Description

Technical Field

[0001] This invention relates to a pre-packaging treatment device for paper bags and its usage method. Background Technology

[0002] With the deepening of the concept of sustainable development and the increasing environmental awareness of the public, paper packaging bags (hereinafter referred to as paper bags) are becoming increasingly popular in the market, with significant growth in their use in many fields, including retail, food packaging, and gift packaging. Compared to plastic bags, paper bags are recyclable and biodegradable, with a smaller impact on the environment. Furthermore, paper bags can be designed in various colors and patterns to suit different brands and products, while also providing brands with additional advertising opportunities. In addition, paper bags are generally more robust than plastic bags and can bear more weight, and since many regions have banned or restricted the use of single-use plastic products, paper bags are a good alternative to plastic products.

[0003] Currently, paper bags processed by paper bag machines are generally manually sorted and then packed into boxes or packages. However, with the adoption of servo and other technologies to control paper bag machines, the bag-making speed is increasing rapidly. Reports indicate that existing paper bag machines can produce 600 or more paper bags per minute, far exceeding the speed of manual packing. This necessitates a greater labor force and is more physically demanding. In particular, because the produced paper bags are folded, with the bottom being significantly thicker than the top, a certain number of bags must be stacked relative to each other before packing, a process known as paper bag indexing. This process is not only time-consuming and labor-intensive, but also requires each stack to contain the same number of bags to ensure neatness. Manual indexing is highly prone to errors.

[0004] Furthermore, when the paper bags that have been sorted and leveled by the indexing and sorting device need to be transferred to the paper bag stacking mechanism for stacking and packaging, if a conveyor belt is used directly for transport, it will not only occupy a large amount of factory space, but also cause the sorted paper bags to bounce back and become fluffy during the transfer process, resulting in misalignment between the paper bags in the paper bag stacking unit. This requires reorganization during stacking and packaging, which affects both packaging efficiency and packaging quality.

[0005] Therefore, how to automatically index paper bags, ensure the neatness of stacked paper bags during the paper bag transfer process, guarantee packaging quality, and achieve automated paper bag packaging are urgent problems to be solved in the paper bag packaging process. Summary of the Invention

[0006] To address the aforementioned issues of how to automatically index paper bags, ensure the neatness of stacked paper bags during the bag transfer process, guarantee packaging quality, and automate paper bag packaging, this invention provides a pre-packaging processing device for paper bags and its usage method. By designing an automatic indexing device and a rolling transfer unit, the paper bags are automatically indexed, stacked, turned, flattened, and rolled to the packaging machine, ensuring that each stack of paper bags has the same quantity, correct orientation, and flatness during transfer, thereby improving packaging efficiency and quality. The specific technical solution is as follows: A pre-treatment device for paper bag packaging includes an automatic indexing and stacking section and a rolling transfer section. The automatic indexing and stacking section includes a paper bag stacking mechanism and a paper bag turning mechanism. The paper bag stacking mechanism is used to automatically divide the processed paper bags into stacked units containing a set number of paper bags. The paper bag turning mechanism is used to turn the stacked paper bag units at intervals, so that the directions of adjacent stacked paper bag units are opposite. The rolling transfer section includes a rolling clamping mechanism, a rolling drive mechanism, and a frame. The rolling clamping mechanism is mounted on the frame and has a waterwheel-like structure, including multiple paper bag transfer clamping positions. The rolling drive mechanism is used to drive the rolling clamping mechanism to rotate. The stacked paper bags stacked by the automatic indexing and stacking section are clamped in the paper bag transfer clamping positions and rolled to the paper bag packaging process by the rotation of the rolling clamping mechanism.

[0007] The aforementioned paper bag packaging pretreatment equipment includes a paper bag stacking mechanism comprising a paper bag transfer component and a paper bag limiting component. The paper bag transfer component is used to transfer the paper bags in the stacked unit to a paper bag turning mechanism when the number of paper bags reaches a set quantity. It includes a first paper bag receiving platform, a first servo motor, and a transfer linkage connecting the first paper bag receiving platform and the first servo motor. When the number of paper bags on the first paper bag receiving platform reaches a specified quantity, the first servo motor drives the transfer linkage to move the first paper bag receiving platform, transferring the stacked unit to the paper bag turning mechanism. The paper bag limiting component is used to control the number of paper bags in the stacked unit. It includes a paper bag support baffle and a paper bag limiting baffle. The first paper bag receiving platform is provided with an avoidance groove. The paper bag support baffle and the paper bag limiting baffle are set on the first paper bag receiving platform through the avoidance groove. The paper bag support baffle can move closer to the paper bag limiting baffle as the number of paper bags on the first paper bag receiving platform increases, thereby controlling the number of paper bags in the stacked unit.

[0008] The aforementioned paper bag packaging pretreatment equipment further includes a paper bag stacking mechanism, which comprises a longitudinal limiting plate and a transverse limiting plate. One longitudinal limiting plate is positioned at the front end of the first paper bag receiving platform. Two transverse limiting plates are positioned opposite each other on both sides of the paper bag stack transfer path, forming a paper bag transfer channel. The first servo motor drives the first paper bag receiving platform to transfer the paper bag stack to the paper bag turning mechanism via the paper bag transfer channel.

[0009] The aforementioned paper bag packaging pretreatment equipment includes a paper bag turning mechanism comprising a paper bag turning component and a paper bag flattening component. The paper bag turning component receives stacked paper bags transferred from the paper bag stacking mechanism and rotates each stacked paper bag 90 degrees left and right at intervals. It includes a second paper bag receiving platform, a second servo motor, and a turning base. The second servo motor is housed within the turning base, and the second paper bag receiving platform is mounted on the turning base, capable of rotating under the drive of the second servo motor. The paper bags obtained by the paper bag stacking mechanism... The stacked units are directly transferred to the second paper bag receiving platform, and the second paper bag receiving platform drives the stacked paper bag units to rotate, so that the adjacent stacked paper bag units are in opposite directions; the paper bag flattening component is set above the paper bag turning component, and is used to press and flatten the stacked paper bag units on the paper bag turning component; it includes a paper bag pressure plate, a support frame and a telescopic cylinder; the telescopic cylinder is set on the support frame; the paper bag pressure plate is set directly above the second paper bag receiving platform, and the paper bag pressure plate presses down under the drive of the telescopic cylinder to flatten the stacked paper bag units located on the second paper bag receiving platform.

[0010] The aforementioned paper bag packaging pretreatment equipment includes a rolling clamping mechanism comprising a rolling clamping body and multiple moving clamping plate assemblies. The rolling clamping body consists of two parallel and symmetrically arranged main clamping plates and multiple fixed partitions. Each main clamping plate has a swastika-shaped, windmill-blade-like structure, including a central bushing and four L-shaped support plates. Each support plate includes a first support perpendicular to the central axis of the rolling clamping mechanism and a second support perpendicular to the first support. The bushing and the four L-shaped support plates are integrally formed. The fixed partitions are located between the two main clamping plates, connecting and fixing them to form multiple paper bag rotating... The clamping position includes a connecting and fixing partition between the first support portions of the two main clamping plates and a receiving and fixing partition between the second support portions of the two main clamping plates. The connecting and fixing partition is located at the upper end of the first support portion, and a movable clamping plate assembly is installed at its lower part. The plane where the receiving and fixing partition is located is parallel to the central axis of the rolling clamping mechanism. The movable clamping plate assembly is disposed between the two main clamping plates and includes a movable clamping plate body and a movable clamping plate driver. The movable clamping plate body is opposite to and parallel to the receiving and fixing partition between the second support portions of the two main clamping plates, and can move closer to or away from the receiving and fixing partition under the action of the movable clamping plate driver to clamp or release the stacked paper bags.

[0011] In the aforementioned paper bag packaging pretreatment equipment, the movable clamping plate driver is a double-acting cylinder, which includes a cylinder body and a piston telescopic rod. The cylinder body is fixedly mounted on the inner side of the first support portion of the two main clamping plates via a cylinder bracket. The movable clamping plate body is located at the front end of the piston telescopic rod and moves closer to or further away from the receiving and fixing partition under the drive of the cylinder body. When the piston telescopic rod is driven to the retracted state, the movable clamping plate body can be engaged between the first support portions of the two main clamping plates and is flush with the fixing partition between the first support portions. When the piston telescopic rod is driven to the extended state, the movable clamping plate body can fit against the receiving and fixing partition between the second support portions of the two main clamping plates to clamp the stacked paper bags.

[0012] In the aforementioned paper bag packaging pretreatment equipment, the cylinder body drives the piston telescopic rod to reciprocate under the control of the control valve unit. The control valve unit is a pneumatic control valve, which includes eight control air heads and two control cams. The control air heads are respectively installed on the outside of the first support part of the two main clamping plates. One control air head on the main clamping plate is used to control the extension of the moving clamping plate body to fit with the receiving and fixing partition between the second support part of the two main clamping plates to clamp the paper bag stacked units. The other control air head on the main clamping plate is used to control the retraction of the moving clamping plate body to be embedded between the first support part of the two main clamping plates to release the paper bag stacked units. The control cams are installed on the frame. One control cam is installed at the paper bag stacked unit inlet position, and the other control cam is installed at the paper bag stacked unit outlet position. When the rolling clamping mechanism rotates, the control air heads contact the control cams, thereby controlling the cylinder body to drive the piston telescopic rod to move, clamping or releasing the paper bag stacked units at a fixed point.

[0013] The aforementioned paper bag packaging pretreatment equipment further includes a paper bag inlet limiting component in the rolling transfer section. The paper bag inlet limiting component includes a left paper bag limiting plate and a right paper bag limiting plate fixed at the inlet position of the stacked paper bags, and a paper bag inlet baffle suspended at the inlet position of the stacked paper bags via a baffle bracket. The left and right paper bag limiting plates form a paper bag inlet channel, and the distance between the left and right paper bag limiting plates can be adjusted according to the size of the paper bags. The paper bag inlet baffle is inclined towards the inside of the paper bag inlet channel and can swing up and down around the baffle bracket to press the stacked paper bags entering the warehouse.

[0014] The aforementioned paper bag packaging pretreatment equipment further includes a pusher mechanism, which comprises a first pusher assembly and a second pusher assembly. The first pusher assembly is located between the automatic indexing and stacking section and the rolling transfer section, and includes two parallel pushers located on both sides of the second paper bag receiving platform of the paper bag turning assembly. The pushers are used to push the paper bag stacks that fall onto the second paper bag receiving platform into the paper bag transfer clamping position at the paper bag stack entry position of the rolling transfer section. The second pusher assembly is located at the paper bag stack exit position of the rolling transfer section, and includes two parallel levers used to push the paper bag stacks that have reached the paper bag stack exit position out of the rolling transfer section.

[0015] The aforementioned method of using the paper bag packaging pretreatment equipment includes the following steps: Step 1) Forming individual paper bags by stacking: The paper bags prepared by the paper bag machine fall vertically into the first paper bag receiving platform. They are supported by paper bag support baffles and stand upright on the first paper bag receiving platform. When the cumulative number of paper bags that have fallen into the platform reaches the set number, a stack of paper bags is formed. Step 2), Transfer of stacked paper bags to individual units: Once the number of paper bags on the first paper bag receiving platform reaches a specified number and forms a stack of paper bags, the first servo motor drives the transfer linkage to raise the first paper bag receiving platform and transfer the stack of paper bags to the second paper bag receiving platform of the paper bag turning mechanism. Step 3) Turn the stacked paper bags individually: After the stacked paper bags are transferred to the second paper bag receiving platform of the paper bag turning mechanism, the second servo motor drives the second paper bag receiving platform to rotate, causing adjacent stacked paper bags to face opposite directions; specifically: Step 3-1): The first stack of paper bags is transferred to the second paper bag receiving platform. The second servo motor drives the second paper bag receiving platform to rotate 90 degrees to one side, turning the first stack of paper bags 90 degrees. Then, after being flattened by the paper bag pressing plate, it enters the next process. Step 3-2): After the second stack of paper bags is transferred to the second paper bag receiving platform, the second servo motor drives the second paper bag receiving platform to rotate and reset, turning the second stack of paper bags 90 degrees to the other side, and then pressing it flat by the paper bag pressing plate before entering the next process. Step 3-3): After the third stack of paper bags is transferred to the second paper bag receiving platform, the transfer method of the first stack of paper bags is repeated. Steps 3-4): The transfer method for the fourth stack of paper bags is the same as that for the second stack of paper bags; By doing this, the adjacent paper bags are stacked in opposite directions to facilitate subsequent overlapping and packaging; Step 4) Rolling transfer of stacked paper bags: After being sorted by the stacking mechanism and turned by the paper bag turning mechanism, the stacked paper bags are pushed horizontally by the pusher mechanism to the paper bag transfer clamping position at the paper bag stacked paper bag entry position in the rolling transfer section, where they are clamped and rolled to the next process by the rolling clamping mechanism; specifically: Step 4-1): The first paper bag stack unit is horizontally pushed from the paper bag stack unit inlet position into the first paper bag transfer clamping position by the first push plate assembly, and falls onto the moving clamping plate body. As the rolling clamping mechanism rotates, the control air head on one side of the main clamping plate touches the control cam at the inlet position, triggering the cylinder body to drive the piston extension rod to move closer to the receiving fixed partition, clamping the paper bag stack unit. The rolling clamping mechanism continues to rotate. When the paper bag stack unit reaches the outlet position, the control air head on the other side of the main clamping plate touches the control cam at the outlet position, triggering the cylinder body to drive the piston extension rod away from the receiving fixed partition, releasing the paper bag stack unit. The paper bag unit is then pushed out of the rolling clamping mechanism by the lever of the second push plate assembly. Step 4-2): The first paper bag stack enters the first paper bag transfer clamping position. After the rolling clamping mechanism rotates away from the paper bag stack entry position, the second paper bag transfer clamping position reaches the paper bag stack entry position. The second paper bag stack is horizontally pushed from the paper bag stack entry position by the first push plate assembly and enters the second paper bag transfer clamping position laterally. As in Step 4-1), it is clamped and rolled by the rolling clamping mechanism to the paper bag stack exit position. The paper bag is then pushed out of the rolling clamping mechanism by the lever of the second push plate assembly. Step 4-3): Same as step 4-2), after the second paper bag stack unit rotates away from the paper bag stack unit inlet position, the third paper bag transfer clamping position reaches the paper bag stack unit inlet position. The third paper bag stack unit is horizontally pushed into the third paper bag transfer clamping position. After being clamped and rolled by the rolling clamping mechanism, it is transferred to the paper bag stack unit outlet position and then pulled out of the rolling clamping mechanism. Step 4-4): The fourth paper bag stack repeats the action of the third paper bag stack, and so on, to achieve the rolling transfer of paper bags.

[0016] The beneficial effects of this invention are: 1) The paper bag packaging pre-treatment equipment of the present invention automatically indexes and stacks paper bags through an automatic indexing and stacking unit, and then turns and flattens them to achieve automatic stacking of paper bags before packaging. This ensures that the indexed number of paper bags in each stack is consistent and that the paper bags are automatically stacked relative to each other, ensuring that the paper bags are correctly packaged, saving labor costs and improving packaging efficiency while ensuring packaging quality. The rolling transfer unit clamps and rolls the stacked paper bags to achieve automatic transfer, ensuring that each stack of paper bags does not become loose or misaligned during the transfer process, ensuring that the paper bags are neatly stacked, correctly oriented, and flat during the transfer process, thereby improving packaging efficiency and quality.

[0017] 2) The automatic indexing and stacking unit of this invention controls the number of individual paper bags stacked through the cooperation of a paper bag support baffle and a paper bag limiting baffle. The reliable structural design ensures consistent indexing quantity in each stack, guaranteeing the neatness of the relatively stacked paper bags. A paper bag limiting component ensures the neatness of the paper bag stacks during transfer, guaranteeing the orderly progress of the packing and indexing process. A paper bag turning mechanism automatically rotates the stacks one at a time, ensuring that adjacent stacked paper bags are in opposite directions, avoiding misdirection during manual packing and further guaranteeing packing quality.

[0018] 3) The rolling conveyor of this invention is designed in a windmill-like shape. Through a paper bag transfer compartment and clamping plates, it clamps and conveys stacked paper bags, shortening the lateral space required for the paper bag conveying path and reducing the factory space required for paper bag packaging equipment. Most importantly, the rolling conveyor of this invention has a reasonable number and position of paper bag clamping positions, ensuring that the orientation of the paper bags remains unchanged after stacking and repositioning, ensuring smooth packaging. Furthermore, a switch with a positioning design opens and closes the clamping plates at fixed points, ensuring the clamping and transfer of paper bags to subsequent processes. The switch is activated by a button on the paper bag clamping position of the roller itself, achieving automatic clamping and releasing during the paper bag conveying process. This ensures the automatic transfer of stacked paper bags, preventing loosening or misalignment during transport, ensuring neat stacking, saving labor costs, improving packaging efficiency, and guaranteeing packaging quality, thus possessing significant practical value. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the pre-packaging and handling equipment for paper bags according to the present invention. Figure 2 This is a top view of the pre-packaging and handling equipment for paper bags according to the present invention. Figure 3 This is a schematic diagram of the paper bag turning component structure of the paper bag packaging pretreatment equipment of the present invention; Figure 4 This is a schematic diagram of the paper bag flattening component structure of the paper bag packaging pretreatment equipment of the present invention; Figure 5 This is a schematic diagram of the rolling clamping body structure of the paper bag packaging pretreatment equipment of the present invention; Figure 6 This is a schematic diagram of the fixed partition structure of the paper bag packaging pretreatment equipment of the present invention; Figure 7 This is a schematic diagram of the main clamping plate structure of the paper bag packaging pretreatment equipment of the present invention; Figure 8 This is a schematic diagram showing the distribution of the moving clamping plate assembly in the paper bag packaging pretreatment equipment of the present invention; Figure 9 This is a schematic diagram of the moving clamping plate assembly structure of the paper bag packaging pretreatment equipment of the present invention; Figure 10 This is a photograph of the paper bag packaging pretreatment equipment of the present invention in use.

[0020] In the diagram: Ⅰ. Automatic indexing and stacking section: Ⅰ-1. Paper bag stacking mechanism, Ⅰ-11. Paper bag transfer assembly, Ⅰ-111. First paper bag receiving platform, Ⅰ-112. First servo motor, Ⅰ-113. Transfer linkage, Ⅰ-12. Paper bag limiting assembly, Ⅰ-121. Paper bag support baffle, Ⅰ-122. Paper bag limiting baffle, Ⅰ-13. Clearance groove, Ⅰ-14. Paper bag limiting assembly, Ⅰ-141. Longitudinal limiting plate, Ⅰ-142. Lateral limiting plate; Ⅰ-2. Paper bag turning mechanism, Ⅰ-21. Paper bag turning assembly, Ⅰ-211. Second paper bag receiving platform, Ⅰ-212. Second servo motor, Ⅰ-213. Turning base, Ⅰ-22. Paper bag flattening assembly, Ⅰ-221. Paper bag pressing plate, Ⅰ-222. Support frame, Ⅰ-223. Telescopic cylinder; II. Rolling Transfer Section: II-1. Rolling Clamping Mechanism; II-11. Rolling Clamping Body; II-111. Main Clamping Plate; II-1111. Bushing Part; II-1112. Support Plate; II-11121. First Support Part; II-11122. Second Support Part; II-112. Fixed Partition; II-1121. Connecting Fixed Partition; II-1122. Receiving Fixed Partition; II-12. Moving Clamping Plate Assembly; II-121. Moving Clamping Plate Body; II-1 22. Moving clamp driver; II-1221. Cylinder body; II-1222. Piston telescopic rod; II-1223. Cylinder bracket; II-123. Control valve; II-1231. Control air head; II-1232. Control cam; II-2. Rolling drive mechanism; II-3. Frame; II-4. Paper bag inlet limiting assembly; II-41. Left paper bag limiting plate; II-42. Right paper bag limiting plate; II-43. Baffle bracket; II-44. Paper bag inlet baffle. M, paper bag transfer clamping position; N, paper bag transfer channel; P, paper bag inlet channel; A, paper bag stacked unit inlet position; B, paper bag stacked unit outlet position. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are merely one embodiment of the present invention, and not all embodiments. Based on this embodiment, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Specific embodiments are as follows: A pre-treatment device for paper bag packaging, such as Figures 1 to 9As shown, the system includes an automatic indexing and stacking section I and a rolling transfer section II. The automatic indexing and stacking section I includes a paper bag stacking mechanism I-1 and a paper bag turning mechanism I-2. The paper bag stacking mechanism I-1 is used to automatically divide the processed paper bags into stacked units containing a set number of paper bags. The paper bag turning mechanism I-2 is used to turn the stacked paper bag units at intervals so that the directions of adjacent stacked paper bag units are opposite. The rolling transfer section II includes a rolling clamping mechanism II-1, a rolling drive mechanism II-2, and a frame II-3. The rolling clamping mechanism II-1 is mounted on the frame II-3 and has a waterwheel-like structure, including multiple paper bag transfer clamping positions M. The rolling drive mechanism II-2 is used to drive the rolling clamping mechanism II-1 to rotate. The stacked paper bags that have been stacked by the automatic indexing and stacking section I are clamped in the paper bag transfer clamping positions M and rolled to the paper bag packaging process by the rotation of the rolling clamping mechanism II-1.

[0022] In this embodiment, the paper bag packaging pre-processing equipment includes a paper bag stacking mechanism I-1 comprising a paper bag transfer component I-11 and a paper bag limiting component I-12. The paper bag transfer component I-11 is used to transfer paper bags to a paper bag turning mechanism I-2 when the number of paper bags in a stacked unit reaches a set quantity. It includes a first paper bag receiving platform I-111, a first servo motor I-112, and a transfer linkage I-113 connecting the first paper bag receiving platform I-111 and the first servo motor I-112. When the number of paper bags on the first paper bag receiving platform I-111 reaches a specified quantity, the first servo motor I-112 drives the transfer linkage I-113 to move the first paper bag receiving platform. I-111, transferring the paper bag stacking unit to the paper bag turning mechanism I-2; the paper bag limiting component I-12 is used to control the number of paper bags in the paper bag stacking unit; it includes a paper bag support baffle I-121 and a paper bag limiting baffle I-122; the first paper bag receiving platform I-111 is provided with a clearance groove I-13, the paper bag support baffle I-121 and the paper bag limiting baffle I-122 are set on the first paper bag receiving platform I-111 through the clearance groove I-13, and the paper bag support baffle I-121 can move closer to the paper bag limiting baffle I-122 as the number of paper bags on the first paper bag receiving platform I-111 increases, thereby controlling the number of paper bags in the paper bag stacking unit.

[0023] The paper bag stacking mechanism I-1 described in this embodiment further includes a paper bag limiting component I-14, which includes a longitudinal limiting plate I-141 and a transverse limiting plate I-142. There is one longitudinal limiting plate I-141, which is located at the front end of the first paper bag receiving platform I-111. There are two transverse limiting plates I-142, which are arranged opposite each other on both sides of the paper bag stacking unit transfer path to form a paper bag transfer channel N. The first servo motor I-112 drives the first paper bag receiving platform I-111 to transfer the paper bag stacking unit through the paper bag transfer channel N to the paper bag turning mechanism I-2.

[0024] The paper bag packaging pretreatment equipment described in this embodiment includes a paper bag turning mechanism I-2 comprising a paper bag turning component I-21 and a paper bag flattening component I-22. The paper bag turning component I-21 receives stacked paper bags transferred from the paper bag stacking mechanism I-1 and rotates the stacked paper bags 90 degrees left and right at intervals. It includes a second paper bag receiving platform I-211, a second servo motor I-212, and a turning base I-213. The second servo motor I-212 is housed within the turning base I-213, and the second paper bag receiving platform I-211 is mounted on the turning base I-213, capable of rotating under the drive of the second servo motor I-212. The paper bag stacks obtained by the paper bag stacking mechanism I-1... The stacked units are directly transferred to the second paper bag receiving platform I-211, and the second paper bag receiving platform I-211 drives the stacked paper bags to rotate, so that the adjacent stacked paper bags are in opposite directions. The paper bag flattening component I-22 is set above the paper bag turning component I-21 and is used to press and flatten the stacked paper bags on the paper bag turning component I-21. It includes a paper bag pressing plate I-221, a support frame I-222, and a telescopic cylinder I-223. The telescopic cylinder I-223 is set on the support frame I-222. The paper bag pressing plate I-221 is set directly above the second paper bag receiving platform I-211. The paper bag pressing plate I-221 is pressed down by the telescopic cylinder I-223 to flatten the stacked paper bags on the second paper bag receiving platform I-211.

[0025] The paper bag packaging pretreatment equipment described in this embodiment includes a rolling clamping mechanism II-1 comprising a rolling clamping body II-11 and multiple moving clamping plate assemblies II-12. The rolling clamping body II-11 consists of two parallel and symmetrically arranged main clamping plates II-111 and multiple fixed partition plates II-112. The main clamping plate II-111 has a swastika-shaped, windmill-blade-like structure, including a central bushing II-1111 and four L-shaped support plates II-1112. The support plate II-1112 includes a first support part II-11121 perpendicular to the central axis of the rolling clamping mechanism II-1, and a second support part II-11122 perpendicular to the first support part II-11121; the bushing part II-1111 and four L-shaped support plates II-1112 are integrally formed; the fixed partition II-112 is located between two main clamping plates II-111 and is used to connect and fix the two main clamping plates II-111 to form multiple paper bag transfer clamping positions M; It includes a connecting and fixing partition II-1121 located between the first support part II-11121 of the two main clamping plates II-111, and a receiving and fixing partition II-1122 located between the second support part II-11122 of the two main clamping plates II-111; the connecting and fixing partition II-1121 is located at the upper end of the first support part II-11121, and the movable clamping plate assembly II-12 is installed at its lower part; the plane of the receiving and fixing partition II-1122 is parallel to the central axis of the rolling clamping mechanism II-1. The movable clamping plate assembly II-12 is disposed between two main clamping plates II-111. It includes a movable clamping plate body II-121 and a movable clamping plate driver II-122. The movable clamping plate body II-121 and the receiving and fixing partition II-1122 between the second support part II-11122 of the two main clamping plates II-111 are arranged opposite to and parallel to each other. The movable clamping plate body II-121 can move closer to or away from the receiving and fixing partition II-1122 under the action of the movable clamping plate driver II-122 to clamp or loosen the stacked paper bags.

[0026] In this embodiment, the moving clamping plate actuator II-122 is a double-acting cylinder, which includes a cylinder body II-1221 and a piston telescopic rod II-1222; the cylinder body II-1221 is fixedly mounted on the inner side of the first support part II-11121 of the two main clamping plates II-111 by a cylinder bracket II-1223; the moving clamping plate body II-121 is located at the front end of the piston telescopic rod II-1222, and moves closer to or further away from the fixed partition plate II-1122 under the drive of the cylinder body II-1221; When the piston telescopic rod II-1222 drives the movable clamping plate body II-121 to the retracted state, it can be engaged between the first support part II-11121 of the two main clamping plates II-111 and flush with the fixed partition II-112 between the first support parts II-11121; when the piston telescopic rod II-1222 drives the movable clamping plate body II-121 to the extended state, it can fit with the receiving fixed partition II-1122 between the second support part II-11122 of the two main clamping plates II-111 to clamp the stacked paper bags.

[0027] Furthermore, in this embodiment, the cylinder body II-1221 drives the piston telescopic rod II-1222 to reciprocate under the control of the control valve unit II-123; the control valve unit II-123 is a pneumatic control valve, which includes eight control air heads II-1231 and two control cams II-1232; the control air heads II-1231 are respectively installed on the outside of the first support part II-11121 of the two main clamping plates II-111, wherein the control air head II-1231 on one main clamping plate II-111 is used to control the extension of the moving clamping plate body II-121 to fit with the receiving and fixing partition II-1122 between the second support part II-11122 of the two main clamping plates II-111, so as to clamp the stacked paper bag units; A control air head II-1231 on a main clamping plate II-111 is used to control the retraction of the moving clamping plate body II-121, which is then embedded between the first support part II-11121 of the two main clamping plates II-111 to release the paper bag stacking unit; the control cam II-1232 is mounted on the frame II-3, with one control cam II-1232 mounted at the paper bag stacking unit inlet position A and the other control cam II-1232 mounted at the paper bag stacking unit outlet position B; when the rolling clamping mechanism II-1 rotates, the control air head II-1231 contacts the control cam II-1232, thereby controlling the cylinder body II-1221 to drive the piston extension rod II-1222 to move, clamping or releasing the paper bag stacking unit at a fixed point. In addition, the rolling transfer unit II also includes a paper bag inlet limiting component II-4. The paper bag inlet limiting component II-4 includes a left paper bag limiting plate II-41 and a right paper bag limiting plate II-42 fixed at the paper bag stack unit inlet position A, and a paper bag inlet baffle II-44 suspended above the paper bag stack unit inlet position A by a baffle bracket II-43. The left paper bag limiting plate II-41 and the right paper bag limiting plate II-42 form a paper bag inlet channel P, and the distance between them can be adjusted according to the size of the paper bag. The paper bag inlet baffle II-44 is inclined to the inside of the paper bag inlet channel P and can swing up and down around the baffle bracket II-43 to press the paper bag stack unit entering the warehouse.

[0028] Furthermore, the paper bag packaging pretreatment equipment described in this embodiment also includes a pusher mechanism III (not shown in the figure). The pusher mechanism III includes a first pusher assembly and a second pusher assembly. The first pusher assembly is located between the automatic indexing and stacking section I and the rolling transfer section II. It includes two parallel pushers located on both sides of the second paper bag receiving platform I-211 of the paper bag turning assembly I-21. It is used to push the stacked paper bags falling on the second paper bag receiving platform I-211 into the paper bag transfer clamping position M at the paper bag stacked paper bag entry position A of the rolling transfer section II. The second pusher assembly is located at the paper bag stacked paper bag exit position B of the rolling transfer section II. It includes two parallel levers used to push the stacked paper bags that have reached the paper bag stacked paper bag exit position B out of the rolling transfer section II.

[0029] The method of using the paper bag packaging pretreatment equipment described in this embodiment is as follows: Figure 10 As shown, it includes the following steps: Step 1) Forming individual paper bags by stacking: Paper bags prepared by the paper bag machine fall vertically into the first paper bag receiving platform Ⅰ-111. They are supported by the paper bag support baffle Ⅰ-121 and stand upright on the first paper bag receiving platform Ⅰ-111. When the cumulative number of paper bags falling reaches the set number, a stack of paper bags is formed. Step 2), Transfer of stacked paper bags to individual units: Once the number of paper bags on the first paper bag receiving platform Ⅰ-111 reaches the specified quantity and forms a stack of paper bags, the first servo motor Ⅰ-112 drives the transfer linkage Ⅰ-113 to raise the first paper bag receiving platform Ⅰ-111 and transfer the stack of paper bags to the second paper bag receiving platform Ⅰ-211 of the paper bag turning mechanism Ⅰ-2. Step 3) Turn the stacked paper bags individually: After the stacked paper bags are transferred to the second paper bag receiving platform I-211 of the paper bag turning mechanism I-2, the second servo motor I-212 drives the second paper bag receiving platform I-211 to rotate, so that the adjacent stacked paper bags are in opposite directions; specifically: Step 3-1): The first stack of paper bags is transferred to the second paper bag receiving platform I-211. The second servo motor I-212 drives the second paper bag receiving platform I-211 to rotate 90 degrees to one side, turning the first stack of paper bags 90 degrees. Then, after being flattened by the paper bag pressing plate I-221, it enters the next process. Step 3-2): After the second stack of paper bags is transferred to the second paper bag receiving platform I-211, the second servo motor I-212 drives the second paper bag receiving platform I-211 to rotate and reset, turning the second stack of paper bags 90 degrees to the other side, and then pressing it flat by the paper bag pressing plate I-221 before entering the next process. Step 3-3): After the third stack of paper bags is transferred to the second paper bag receiving platform Ⅰ-211, the transfer method of the first stack of paper bags is repeated. Steps 3-4): The transfer method for the fourth stack of paper bags is the same as that for the second stack of paper bags; By doing this, the adjacent paper bags are stacked in opposite directions to facilitate subsequent overlapping and packaging; Step 4) Rolling transfer of stacked paper bags: After being sorted by the stacking mechanism and turned by the paper bag turning mechanism I-2, the stacked paper bags are transferred to the first transfer pusher assembly and pushed horizontally to the paper bag transfer clamping position M at the paper bag stacked paper bag entry position A in the rolling transfer section II. The paper bags are then clamped and rolled by the rolling clamping mechanism II-1 to the next process; specifically: Step 4-1): The first paper bag stack unit is horizontally pushed from the paper bag stack unit entry position A by the first pusher plate assembly into the first paper bag transfer clamping position M, and falls onto the moving clamping plate body II-121. As the rolling clamping mechanism II-1 rotates, the control air head II-1231 on one side of the main clamping plate II-111 touches the control cam II-1232 at the entry position, triggering the cylinder body II-1221 to drive the piston extension rod II-1222 towards the receiving fixed partition plate II-112. 2. Approach and clamp the stacked paper bag units; the rolling clamping mechanism II-1 continues to rotate. When the stacked paper bag units reach the exit position, the control air head II-1231 on the other side of the main clamping plate II-111 touches the control cam II-1232 at the exit position, triggering the cylinder body II-1221 to drive the piston extension rod II-1222 away from the receiving fixed partition plate II-1122, releasing the stacked paper bag units. The paper bag units are then pushed out of the rolling clamping mechanism II-1 by the lever of the second push plate assembly. Step 4-2): The first paper bag stack enters the first paper bag transfer clamping position M. After the rolling clamping mechanism II-1 rotates away from the paper bag stack entry position, the second paper bag transfer clamping position M reaches the paper bag stack entry position A. The second paper bag stack is horizontally pushed from the paper bag stack entry position A by the first push plate assembly and enters the second paper bag transfer clamping position M laterally. As in Step 4-1), it is clamped and rolled by the rolling clamping mechanism II-1 to the paper bag stack exit position B. The paper bag is then pushed out of the rolling clamping mechanism II-1 by the lever of the second push plate assembly. Step 4-3): Same as step 4-2), after the second paper bag stack unit rotates away from the paper bag stack unit entry position, the third paper bag transfer clamping position M reaches the paper bag stack unit entry position A. The third paper bag stack unit is horizontally pushed and enters the third paper bag transfer clamping position M. After being clamped and rolled by the rolling clamping mechanism II-1, it is transferred to the paper bag stack unit exit position B and then pulled out of the rolling clamping mechanism II-1. Step 4-4): The fourth paper bag stack repeats the action of the third paper bag stack, and so on, to achieve the rolling transfer of paper bags.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalent elements of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pre-treatment device for paper bag packaging, characterized in that: It includes an automatic indexing and stacking section (Ⅰ) and a rolling transfer section (Ⅱ); The automatic indexing and stacking unit (Ⅰ) includes a paper bag stacking mechanism (Ⅰ-1) and a paper bag turning mechanism (Ⅰ-2); The paper bag stacking mechanism (Ⅰ-1) is used to automatically divide the processed paper bags into stacked units containing a set number of paper bags; The paper bag turning mechanism (Ⅰ-2) is used to turn the stacked paper bags at intervals so that the adjacent stacked paper bags are in opposite directions. The rolling transfer unit (II) includes a rolling clamping mechanism (II-1), a rolling drive mechanism (II-2), and a frame (II-3). The rolling clamping mechanism (Ⅱ-1) is mounted on the frame (Ⅱ-3) and has a waterwheel-like structure, including multiple paper bag transfer clamping positions (M). The rolling drive mechanism (Ⅱ-2) is used to drive the rolling clamping mechanism (Ⅱ-1) to rotate; The stacked paper bags, after being sorted by the automatic indexing and stacking section (Ⅰ), are clamped on the paper bag transfer clamping position (M) and then rolled and transferred to the paper bag packaging process by the rotation of the rolling clamping mechanism (Ⅱ-1).

2. The paper bag packaging pretreatment equipment according to claim 1, characterized in that: The paper bag stacking mechanism (Ⅰ-1) includes a paper bag transfer assembly (Ⅰ-11) and a paper bag limiting assembly (Ⅰ-12). The paper bag transfer assembly (Ⅰ-11) is used to transfer the paper bags in the stacked paper bag unit to the paper bag turning mechanism (Ⅰ-2) when the number of paper bags in the stacked paper bag unit reaches a set number; it includes a first paper bag receiving platform (Ⅰ-111), a first servo motor (Ⅰ-112), and a transfer linkage (Ⅰ-113) connecting the first paper bag receiving platform (Ⅰ-111) and the first servo motor (Ⅰ-112); when the number of paper bags on the first paper bag receiving platform (Ⅰ-111) reaches the specified number, the first servo motor (Ⅰ-112) drives the transfer linkage (Ⅰ-113) to move the first paper bag receiving platform (Ⅰ-111) to transfer the stacked paper bag unit to the paper bag turning mechanism (Ⅰ-2). The paper bag limiting component (Ⅰ-12) is used to control the number of paper bags in the stacked paper bag unit; it includes a paper bag support baffle (Ⅰ-121) and a paper bag limiting baffle (Ⅰ-122); the first paper bag receiving platform (Ⅰ-111) is provided with a clearance groove (Ⅰ-13), the paper bag support baffle (Ⅰ-121) and the paper bag limiting baffle (Ⅰ-122) are set on the first paper bag receiving platform (Ⅰ-111) through the clearance groove (Ⅰ-13), and the paper bag support baffle (Ⅰ-121) can move closer to the paper bag limiting baffle (Ⅰ-122) as the number of paper bags on the first paper bag receiving platform (Ⅰ-111) increases, thereby controlling the number of paper bags in the stacked paper bag unit.

3. The paper bag packaging pretreatment equipment according to claim 2, characterized in that: The paper bag stacking mechanism (Ⅰ-1) further includes a paper bag limiting component (Ⅰ-14), which includes a longitudinal limiting plate (Ⅰ-141) and a transverse limiting plate (Ⅰ-142). The longitudinal limiting plate (Ⅰ-141) is one, which is set at the front end of the first paper bag receiving platform (Ⅰ-111); There are two lateral limiting plates (Ⅰ-142), which are arranged opposite each other on both sides of the paper bag stacking individual transfer path to form a paper bag transfer channel (N). The first servo motor (Ⅰ-112) drives the first paper bag receiving platform (Ⅰ-111) to transfer the stacked paper bags through the paper bag transfer channel (N) to the paper bag turning mechanism (Ⅰ-2).

4. The paper bag packaging pretreatment equipment according to claim 1, characterized in that: The paper bag turning mechanism (Ⅰ-2) includes a paper bag turning assembly (Ⅰ-21) and a paper bag flattening assembly (Ⅰ-22). The paper bag steering assembly (Ⅰ-21) is used to receive the paper bag stacks transferred from the paper bag sorting mechanism (Ⅰ-1) and rotate the paper bag stacks 90 degrees left and right at intervals. It includes a second paper bag receiving platform (Ⅰ-211), a second servo motor (Ⅰ-212), and a steering base (Ⅰ-213). The second servo motor (Ⅰ-212) is located inside the steering base (Ⅰ-213), and the second paper bag receiving platform (Ⅰ-211) is located on the steering base (Ⅰ-213). The second paper bag receiving platform (Ⅰ-211) can rotate under the drive of the second servo motor (Ⅰ-212). The paper bag stacks obtained by the paper bag sorting mechanism (Ⅰ-1) are directly transferred to the second paper bag receiving platform (Ⅰ-211), and the second paper bag receiving platform (Ⅰ-211) drives the paper bag stacks to rotate, so that the adjacent paper bag stacks are in opposite directions. The paper bag flattening assembly (Ⅰ-22) is positioned above the paper bag turning assembly (Ⅰ-21) and is used to press and flatten the stacked paper bags on the paper bag turning assembly (Ⅰ-21). It includes a paper bag pressing plate (Ⅰ-221), a support frame (Ⅰ-222), and a telescopic cylinder (Ⅰ-223). The telescopic cylinder (Ⅰ-223) is positioned on the support frame (Ⅰ-222). The paper bag pressing plate (Ⅰ-221) is positioned directly above the second paper bag receiving platform (Ⅰ-211). The paper bag pressing plate (Ⅰ-221) is pressed downward by the telescopic cylinder (Ⅰ-223) to flatten the stacked paper bags on the second paper bag receiving platform (Ⅰ-211).

5. The paper bag packaging pretreatment equipment according to claim 1, characterized in that: The rolling clamping mechanism (Ⅱ-1) includes a rolling clamping body (Ⅱ-11) and multiple moving clamping plate assemblies (Ⅱ-12). The rolling clamping body (Ⅱ-11) consists of two parallel and symmetrically arranged main clamping plates (Ⅱ-111) and multiple fixed partitions (Ⅱ-112); The main clamping plate (Ⅱ-111) has a swastika-shaped windmill blade structure, including a central bushing (Ⅱ-1111) and four L-shaped support plates (Ⅱ-1112). The support plates (Ⅱ-1112) include a first support (Ⅱ-11121) perpendicular to the central axis of the rolling clamping mechanism (Ⅱ-1) and a second support (Ⅱ-11122) perpendicular to the first support (Ⅱ-11121). The bushing (Ⅱ-1111) and the four L-shaped support plates (Ⅱ-1112) are integrally formed. The fixed partition (Ⅱ-112) is located between the two main clamping plates (Ⅱ-111) and is used to connect and fix the two main clamping plates (Ⅱ-111) to form multiple paper bag transfer clamping positions (M); it includes a connecting fixed partition (Ⅱ-1121) located between the first support part (Ⅱ-11121) of the two main clamping plates (Ⅱ-111) and a receiving fixed partition (Ⅱ-1122) located between the second support part (Ⅱ-11122) of the two main clamping plates (Ⅱ-111); the connecting fixed partition (Ⅱ-1121) is located at the upper end of the first support part (Ⅱ-11121), and the moving clamping plate assembly (Ⅱ-12) is installed at its lower part; the plane of the receiving fixed partition (Ⅱ-1122) is parallel to the central axis of the rolling clamping mechanism (Ⅱ-1); The movable clamping plate assembly (Ⅱ-12) is disposed between two main clamping plates (Ⅱ-111). It includes a movable clamping plate body (Ⅱ-121) and a movable clamping plate driver (Ⅱ-122). The movable clamping plate body (Ⅱ-121) is disposed opposite to and parallel to the receiving and fixing partition (Ⅱ-1122) between the second support part (Ⅱ-11122) of the two main clamping plates (Ⅱ-111). It can move closer to or away from the receiving and fixing partition (Ⅱ-1122) under the action of the movable clamping plate driver (Ⅱ-122) to clamp or release the stacked paper bags.

6. The paper bag packaging pretreatment equipment according to claim 5, characterized in that: The moving clamp driver (Ⅱ-122) is a double-acting cylinder, which includes a cylinder body (Ⅱ-1221) and a piston extension rod (Ⅱ-1222). The cylinder body (Ⅱ-1221) is fixedly mounted on the inner side of the first support part (Ⅱ-11121) of the two main clamping plates (Ⅱ-111) by a cylinder bracket (Ⅱ-1223); The moving clamp body (Ⅱ-121) is located at the front end of the piston telescopic rod (Ⅱ-1222) and moves closer to or further away from the fixed partition (Ⅱ-1122) under the drive of the cylinder body (Ⅱ-1221). When the piston telescopic rod (II-1222) drives the movable clamping plate body (Ⅱ-121) to the retracted state, it can be inserted between the first support part (Ⅱ-11121) of the two main clamping plates (Ⅱ-111) and flush with the fixed partition (Ⅱ-112) between the first support parts (Ⅱ-11121); when the piston telescopic rod (Ⅱ-1222) drives the movable clamping plate body (Ⅱ-121) to the extended state, it can fit with the receiving fixed partition (Ⅱ-1122) between the second support part (Ⅱ-11122) of the two main clamping plates (Ⅱ-111) to clamp the stacked paper bags.

7. The paper bag packaging pretreatment equipment according to claim 6, characterized in that: The cylinder body (Ⅱ-1221) drives the piston extension rod (Ⅱ-1222) to reciprocate under the control of the control valve unit (Ⅱ-123); the control valve unit (Ⅱ-123) is a pneumatic control valve, which includes eight control air heads (Ⅱ-1231) and two control cams (Ⅱ-1232). The control air head (Ⅱ-1231) is installed on the outside of the first support part (Ⅱ-11121) of the two main clamping plates (Ⅱ-111). The control air head (Ⅱ-1231) on one main clamping plate (Ⅱ-111) is used to control the extension of the moving clamping plate body (Ⅱ-121) to fit against the receiving and fixing partition (Ⅱ-1122) between the second support part (Ⅱ-11122) of the two main clamping plates (Ⅱ-111) to clamp the stacked paper bag units. The control air head (Ⅱ-1231) on the other main clamping plate (Ⅱ-111) is used to control the retraction of the moving clamping plate body (Ⅱ-121) to be embedded between the first support part (Ⅱ-11121) of the two main clamping plates (Ⅱ-111) to release the stacked paper bag units. The control cam (Ⅱ-1232) is mounted on the frame (Ⅱ-3), with one control cam (Ⅱ-1232) mounted at the paper bag stacking unit inlet position (A) and the other control cam (Ⅱ-1232) mounted at the paper bag stacking unit outlet position (B). When the rolling clamping mechanism (Ⅱ-1) rotates, the control air head (Ⅱ-1231) contacts the control cam (Ⅱ-1232), thereby controlling the cylinder body (Ⅱ-1221) to drive the piston extension rod (Ⅱ-1222) to move, clamping or releasing the stacked paper bags at a fixed point.

8. The paper bag packaging pretreatment equipment according to claim 1, characterized in that: The rolling transfer unit (II) further includes a paper bag inlet limiting assembly (II-4), which includes a left paper bag limiting plate (II-41) and a right paper bag limiting plate (II-42) fixed at the paper bag stack unit inlet position (A), and a paper bag inlet baffle (II-44) suspended above the paper bag stack unit inlet position (A) by a baffle bracket (II-43). The left paper bag limiting plate (II-41) and the right paper bag limiting plate (II-42) form a paper bag inlet channel (P), and the distance between the left paper bag limiting plate (II-41) and the right paper bag limiting plate (II-42) can be adjusted according to the size of the paper bag. The paper bag inlet baffle (II-44) is inclined to the inside of the paper bag inlet channel (P) and can swing up and down around the baffle bracket (II-43) to press the paper bag stack unit entering the warehouse.

9. The paper bag packaging pretreatment equipment according to claim 1, characterized in that: The device also includes a pusher mechanism (Ⅲ), which includes a first pusher assembly and a second pusher assembly; The first pusher assembly is located between the automatic indexing and stacking section (Ⅰ) and the rolling transfer section (Ⅱ). It includes two parallel pushers located on both sides of the second paper bag receiving platform (Ⅰ-211) of the paper bag turning assembly (Ⅰ-21). The pushers are used to push the paper bag stacks that fall onto the second paper bag receiving platform (Ⅰ-211) into the paper bag transfer clamping position (M) of the paper bag stack entry position (A) of the rolling transfer section (Ⅱ). The second pusher assembly is located at the paper bag stacking unit exit position (B) of the rolling transfer section (II), and includes two parallel levers for pushing the paper bag stacking unit that has reached the paper bag stacking unit exit position (B) out of the rolling transfer section (II).

10. A method of using the paper bag packaging pretreatment equipment according to any one of claims 1-9, characterized in that: Includes the following steps: Step 1) Forming individual paper bags by stacking: The paper bags prepared by the paper bag machine fall vertically into the first paper bag receiving platform (Ⅰ-111). They are supported by the paper bag support baffle (Ⅰ-121) and stand upright on the first paper bag receiving platform (Ⅰ-111). When the cumulative number of paper bags falling into the platform reaches the set number, a stack of paper bags is formed. Step 2), Transfer of stacked paper bags to individual units: Once the number of paper bags on the first paper bag receiving platform (Ⅰ-111) reaches the specified number and forms a stack of paper bags, the first servo motor (Ⅰ-112) drives the transfer linkage (Ⅰ-113) to raise the first paper bag receiving platform (Ⅰ-111) and transfer the stack of paper bags to the second paper bag receiving platform (Ⅰ-211) of the paper bag turning mechanism (Ⅰ-2); Step 3) Turn the stacked paper bags individually: After the stacked paper bags are transferred to the second paper bag receiving platform (I-211) of the paper bag turning mechanism (I-2), the second servo motor (I-212) drives the second paper bag receiving platform (I-211) to rotate, so that the adjacent stacked paper bags are in opposite directions; specifically: Step 3-1): The first stack of paper bags is transferred to the second paper bag receiving platform (Ⅰ-211). The second servo motor (Ⅰ-212) drives the second paper bag receiving platform (Ⅰ-211) to rotate 90 degrees to one side, turning the first stack of paper bags 90 degrees. Then, after being flattened by the paper bag pressing plate (Ⅰ-221), it enters the next process. Step 3-2): After the second stack of paper bags is transferred to the second paper bag receiving platform (Ⅰ-211), the second servo motor (Ⅰ-212) drives the second paper bag receiving platform (Ⅰ-211) to rotate and reset, turning the second stack of paper bags 90 degrees to the other side, and then pressing it flat by the paper bag pressing plate (Ⅰ-221) before entering the next process; Step 3-3): After the third stack of paper bags is transferred to the second paper bag receiving platform (Ⅰ-211), the transfer method of the first stack of paper bags is repeated. Steps 3-4): The transfer method for the fourth stack of paper bags is the same as that for the second stack of paper bags; By doing this, the adjacent paper bags are stacked in opposite directions to facilitate subsequent overlapping and packaging; Step 4) Rolling transfer of stacked paper bags: After being sorted by the stacking mechanism and turned by the paper bag turning mechanism (Ⅰ-2), the stacked paper bags are pushed horizontally by the pusher mechanism (Ⅲ) to the paper bag transfer clamping position (M) at the paper bag stacked paper bag entry position (A) of the rolling transfer section (Ⅱ), and then clamped and rolled by the rolling clamping mechanism (Ⅱ-1) to the next process; specifically: Step 4-1): The first stack of paper bags is horizontally pushed from the paper bag stack entry position (A) into the first paper bag transfer clamping position (M) by the first push plate assembly, and falls onto the moving clamping plate body (Ⅱ-121). As the rolling clamping mechanism (Ⅱ-1) rotates, the control air head (Ⅱ-1231) on one side of the main clamping plate (Ⅱ-111) touches the control cam (Ⅱ-1232) at the entry position, triggering the cylinder body (Ⅱ-1221) to drive the piston extension rod (Ⅱ-1222) towards the receiving fixed partition (Ⅱ-1122). Approaching, the paper bag stack is clamped; the rolling clamping mechanism (Ⅱ-1) continues to rotate. When the paper bag stack reaches the outlet position, the control air head (Ⅱ-1231) on the other side of the main clamping plate (Ⅱ-111) touches the control cam (Ⅱ-1232) at the outlet position, triggering the cylinder body (Ⅱ-1221) to drive the piston extension rod (Ⅱ-1222) away from the receiving fixed partition (Ⅱ-1122), releasing the paper bag stack. The first paper bag stack is then pushed out of the rolling clamping mechanism (Ⅱ-1) by the lever of the second push plate assembly. Step 4-2): The first paper bag stack unit enters the first paper bag transfer clamping position (M). After the rolling clamping mechanism (Ⅱ-1) rotates away from the paper bag stack unit entry position (A), the second paper bag transfer clamping position (M) arrives at the paper bag stack unit entry position (A). The second paper bag stack unit is horizontally pushed from the paper bag stack unit entry position (A) by the first push plate assembly and enters the second paper bag transfer clamping position (M) laterally. As in Step 4-1), it is clamped and rolled by the rolling clamping mechanism (Ⅱ-1) to the paper bag stack unit exit position (B). The second paper bag stack unit is pushed out of the rolling clamping mechanism (Ⅱ-1) by the lever of the second push plate assembly. Step 4-3): Same as step 4-2), after the second paper bag stack unit rotates away from the paper bag stack unit inlet position (A), the third paper bag transfer clamping position (M) arrives at the paper bag stack unit inlet position (A), the third paper bag stack unit is horizontally pushed into the third paper bag transfer clamping position (M), and is clamped and rolled by the rolling clamping mechanism (Ⅱ-1) to the paper bag stack unit outlet position (B) and then pulled out of the rolling clamping mechanism (Ⅱ-1). Step 4-4): The fourth paper bag stack repeats the action of the third paper bag stack, and so on, to achieve the rolling transfer of paper bags.

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