Inner and outer surface cleaning and tidying device and method for cleaning packaging bag

Abstract

The invention discloses an inner and outer surface cleaning and tidying device and method for cleaning a packaging bag, and relates to the technical field of full-automatic production equipment. The technical problems that a traditional high-cleanliness double-layer packaging bag is low in production efficiency, low in automation degree and high in equipment failure rate are solved. The equipment comprises an equipment frame body, an automatic cleaning mechanism and an automatic arranging mechanism; the automatic cleaning mechanism comprises automatic bag taking and opening mechanisms on the left side and the right side, an automatic bagging mechanism, a bag turning mechanism and a bag cleaning and blowing mechanism; a set of parallel linear guide rails are arranged on the equipment frame body, a plurality of sets of sliding blocks are arranged on the linear guide rails from front to back, a first sliding frame provided with an automatic bagging mechanism is connected to the front end sliding block, a bag blowing mechanism is connected to the linear guide rails through a middle sliding block, and a bag turning mechanism is connected to the rear sliding block. A bagging frame on the automatic bagging mechanism is connected to a first sliding frame in a left-right sliding mode through a left-right sliding mechanism. The two sets of bagging and bag opening frames in the bagging frame are matched with the two sets of automatic bag taking and opening mechanisms respectively.

Description

Technical Field

[0001] The present invention relates to the technical field of fully automatic production equipment, in particular to an inner and outer surface cleaning and finishing device and method for clean packaging bags. Background Art

[0002] Packaging bags are widely used in industrial production, especially functional plastic bags, which are widely used in packaging products in the chemical, food, pharmaceutical, and electronics industries due to their corrosion and high-temperature resistance. Packaging bags used in high-purity production environments require special cleaning operations during production. Conventional manual operations inevitably involve direct contact between people and materials, increasing the risk of cross-contamination. This is especially true for the use of high-purity double-layer packaging bags. Conventional automated cleaning and transportation of packaging bags is no longer sufficient, requiring manual labor wearing compliant cleanroom clothing and strictly following operating procedures.

[0003] In addition, plastic packaging bags may also be charged with static electricity during the manufacturing, processing and use process. Plastic packaging bags with static electricity will absorb dust and other impurities, further affecting the quality of the packaged products. Therefore, during the cleaning and sorting process of plastic packaging bags with higher cleanliness requirements, static electricity must also be removed, making the production, cleaning and sorting process of packaging bags more complicated.

[0004] While existing automated bag-washing and sorting and transport equipment have partially replaced manual operations, they suffer from significant flaws in structural design and functional coordination. Most equipment utilizes a single-station, single-bag washing mode, with processes such as bag removal, washing, bagging, and sorting performed independently by multiple modules. This requires some manual operation and manual coordination, leading to the risk of secondary contamination of cleaned bags. Furthermore, even cleaned and bagged bags require further cleaning, resulting in cumbersome, time-consuming, and labor-intensive operations that fail to meet the actual production and use requirements for high-purity double-layer packaging bags.

[0005] Therefore, there is an urgent need for a double-layer packaging bag washing and sorting equipment that can achieve full process automation, clean and pollution-free, efficient and stable. Summary of the Invention

[0006] In response to the shortcomings and deficiencies in the prior art, the present invention provides a device and method for cleaning and sorting the inner and outer surfaces of clean packaging bags, which integrates the functions of dual-station synchronous bag taking, double bag rack alternating bag covering and turning, automatic plasma wind blowing and bag stacking, and boxing. It does not require manual operation and has the effects of cleaning, sorting, removing impurities and removing static electricity, meeting the production, packaging and transportation needs of high-cleanliness double-layer packaging bags.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides an inner and outer surface cleaning and finishing device for clean packaging bags, comprising an equipment frame, on which an automatic cleaning mechanism and an automatic finishing mechanism are sequentially arranged from front to back; The automatic cleaning mechanism includes an automatic bag taking and opening mechanism, an automatic bagging mechanism, a bag turning mechanism and a bag washing and blowing mechanism which are arranged on the equipment frame; The equipment frame on the left and right sides of the automatic cleaning mechanism is equipped with two sets of automatic bag taking and opening mechanisms: the first automatic bag taking and opening mechanism and the second automatic bag taking and opening mechanism. The equipment frame is provided with a set of parallel linear guide rails, and the linear guide rails are provided with multiple sets of sliders: front slider, middle slider and rear slider. The front slider is connected to the first sliding frame with automatic bagging mechanism, the bag purge mechanism is connected to the linear guide rails through the middle slider, and the rear slider is connected to the bag turning mechanism. The dynamic bagging mechanism includes a first sliding frame and a bagging frame, and the bagging frame is connected to the first sliding frame by a left-right sliding mechanism and can slide left and right; The left and right side walls of the bagging rack are connected to the bagging support frame through a rearwardly arranged transverse bagging rod; the two groups of bagging support frames are matched with two groups of automatic bag taking and opening mechanisms respectively.

[0008] Preferably, transverse slide rails and transverse pneumatic push rods matching the front slider and the rear slider are respectively connected to the front and rear ends of the linear guide rail, and the front slider and the rear slider are respectively pushed forward and backward along the transverse slide rails by the transverse pneumatic push rods. The first sliding frame and the bagging frame are both rectangular frames arranged parallel to each other, and the first sliding frame and the bagging frame are also connected to each other for left and right relative sliding through the first slider and the first slide rail; The left and right sliding mechanism includes left and right pneumatic push rods that are telescopically arranged on one side of the first sliding frame. The movable ends of the left and right pneumatic push rods are connected to one side of the bag rack. A first slider is provided on the bag rack. The left and right pneumatic push rods are telescopically pushed to push the first slider of the bag rack to move relatively left and right along the first slide rail on the first sliding frame.

[0009] Preferably, the left and right side frames of the bagging rack are connected to the bagging support frame through two first transverse bagging rods arranged backwards; The bagging support frame is specifically an O-shaped frame that matches the size of the bag opening of the packaging bag, and its upper and lower ends are connected to the frames on both sides of the bagging rack through the first transverse bagging rod.

[0010] Preferably, the bag washing and blowing mechanism as a whole is a rectangular frame-type wind rod upright arranged parallel to the bag rack, and a group of plasma wind rods are vertically arranged opposite each other on the left and right sides of the rectangular frame-type wind rod upright, and the bag holding frame can pass through the two groups of plasma wind rods for horizontal movement.

[0011] Preferably, the bag turning mechanism includes a rotating column, a rotating base, and a bag turning rod. The rotating column is vertically arranged, and two groups of bag turning rods are symmetrically provided on its front and rear side walls. The bag turning rod includes two second transverse support rods arranged in parallel up and down, and the vertical distance between the two second transverse support rods is less than the vertical height of the O-shaped frame of the bagging support frame. The two second transverse support rods can pass through the O-shaped frame of the bagging support frame laterally. The bottom of the rotating column is connected to the rear slider on the linear guide through the rotating base. When the rotating column slides to the rear end of the linear guide through the rear slider, the rotating column and the rotating base can drive the two sets of bag turning rods to rotate 360°, or rotate 180° in both forward and reverse directions.

[0012] Preferably, it also includes an automatic sorting mechanism, which includes a bag removing mechanism and a bag stacking mechanism. The bag removing mechanism includes a bag removing rotating frame matched with the rear end of the linear guide rail. The bag removing rotating frame is an F-shaped frame, including a vertical rotating support frame, a horizontal upper support rod and a horizontal lower support rod. The upper opening of the F-shaped frame matches the second horizontal support rod of the bag turning rod and the size of the packaging bag. The second horizontal support rod can be moved to the interior of the upper opening of the F-shaped frame along with the rear slider; and the three inner side walls of the frame located inside the upper opening of the F-shaped frame are provided with pneumatic clamps for clamping the three edges of the packaging bag. The equipment frame is provided with a first servo motor connected to the vertical rotating support frame. The rotating shaft of the first servo motor is connected to the vertical rotating support frame. The vertical rotating support frame is driven to rotate forward or reverse by the rotation of the rotating shaft of the first servo motor.

[0013] Preferably, the bag stacking mechanism includes a primary bag stacking mechanism and a secondary bag stacking mechanism connected to each other, the primary bag stacking mechanism includes a first support frame and a long bag stacking frame parallel to the F-shaped frame, a first supporting plate is provided on the top of the long bag stacking frame, and long pressing plates that can rotate 180 degrees toward the inner side of the upper part are connected to the left and right sides of the first supporting plate. A horizontal pneumatic pressure rod matching the position of the first supporting plate is provided on the equipment frame; The position of the first supporting plate matches the upper opening position of the F-shaped frame of the bag stripping rotary frame when the F-shaped frame is rotated to the horizontal position; The secondary bag stacking mechanism includes a second support frame, which is connected to a horizontally arranged second support plate, and the second support plate is parallel to the central axis of the first support plate. The second support plate includes an interconnected middle fixed main plate, and short pressure plates are respectively provided on the front and rear sides thereof, which can be rotated 180 degrees toward the middle fixed main plate; A first slide-rail pneumatic clamp is also connected to the second support frame, and the first slide-rail pneumatic clamp moves horizontally back and forth along the second support plate.

[0014] Preferably, a material storage barrel is provided at the bottom of one side of the middle fixed main board, and a second sliding rail pneumatic clamp matching the middle fixed main board and the material storage barrel that are connected to the second supporting plate is provided at the end of the equipment frame. The packaging bag can be clamped to the material storage barrel position and placed therein through the second sliding rail pneumatic clamp.

[0015] Preferably, the automatic bag taking and opening mechanism includes a bag taking support frame, a bag lifting bin, and a bag taking and turning mechanism. The bag taking and turning mechanism includes a vertical adsorption back plate on both sides of the linear guide rail and a bag taking shaft on the bag taking support frame. The vertical adsorption back plate is provided with a vacuum suction cup that matches the packaging bag, and the lower end of the bag taking shaft is also connected to a pneumatic gripper that matches the position of the lifting bag bin. The bag taking support frame is also provided with a bag opening mechanism that matches the opening of the packaging bag, and the bag opening mechanism is also provided with an opening pneumatic clamp. There is a bag-opening gap between the vertical adsorption back plate and the bag-taking support frame, which is used for the bag-opening gap to extend the bag-holding frame in the automatic bag-putting mechanism to perform the bag-putting operation; A lifting mechanism is provided at the bottom of the lifting bag bin.

[0016] A method for cleaning and finishing the inner and outer surfaces of a clean packaging bag adopts an inner and outer surface cleaning and finishing device for a clean packaging bag. Under the control of a controller, the specific operation steps include the following: S1. Automatic bag removal and opening process: The automatic bag removal and opening mechanism extracts and opens the bag. After the bag is lifted vertically and adsorbed onto the vertical adsorption backing plate, the bag opening on the unadsorbed side is pulled outward, ready for bagging. S2. Automatic bagging and cleaning process: Use the automatic bagging mechanism, bag washing and blowing mechanism and bag turning mechanism to blow and clean the front and back of the packaging bag. The specific steps are as follows: S21. The left bagging frame of the bagging rack moves backward and extends into the first bag opened in step S1 on the left. After the front slider moves forward to the front end, the bagging rack moves to the right end of the first sliding rack; at this time, the first bag moves to the first purge station of the bag washing and purge mechanism and waits for the purge operation. S22. The bag washing and purge mechanism moves forward to purge both sides of the front of the first bag; after the purge is completed, the bag washing and purge mechanism is reset to achieve a comprehensive purge of the front outer wall of the first bag; The first packaging bag moves backward through the front slider and enters the bag turning mechanism. The first packaging bag is passively reversed and placed on the second transverse support rod at the front end, and enters the second purge station to wait for the purge operation. The bag washing and blowing mechanism moves backward to blow and wash the outer side of the back of the first packaging bag; after the blowing and washing is completed, the bag washing and blowing mechanism resets to achieve a comprehensive blowing and washing operation on the front and back of the first packaging bag; At the same time, the bagging support frame on the right side of the bagging rack is driven to move backward synchronously and extend into the second packaging bag opened in step S1 on the right side; S23. After the second bag moves forward to the front end, the bagging rack moves to the left end of the first sliding rack; at this time, the second bag moves to the first purge station and waits for the purge operation; after continuing the purge operation on the front outside of the second bag, The left bagging frame moves backward and extends into the third packaging bag opened in step S1 on the left, waiting to enter the first purge station; At the same time, the second packaging bag on the first horizontal bagging rod on the right is also passively reversed and connected to the outside of the first packaging bag on the second horizontal support rod at the front end, entering the second purge station for purge operation, realizing double bagging purge and bagging operations.

[0017] Preferably, the specific operation steps also include: S24. After the double bagging and purging operations are completed in step S23, the bag turning mechanism rotates the rotating column 180° as the rear slider moves backward to the rear end of the linear guide rail, turning the front second transverse support rod with the double bag to the bag removal mechanism for bag removal. The removed double-layer clean packaging bags are moved to the automatic sorting mechanism for automatic sorting. In addition, after the bag removal operation is completed, the rear slider will reset forward to the bag turning station, waiting for the subsequent bag turning and secondary purge operations; S25. After the front slider moves forward along the transverse slide to the front end, the bagging rack moves to the right end of the first sliding rack; the third bag enters the first purge station; S26 repeat the above steps S21-S25 to achieve bilateral synchronous bagging and bag turning continuous operation; Among them, the double-layer clean packaging bags are moved to the automatic sorting mechanism for automatic sorting operations after being taken off, which specifically includes: after the bag-taking rotating frame of the automatic sorting mechanism takes off the packaging bag from the second horizontal support rod of the bag-turning mechanism, the F-shaped frame flips 90° to the right and places the packaging bag flat on the primary bag stacking mechanism for primary folding; the first sliding rail pneumatic gripper on the secondary bag stacking mechanism grabs the packaging bag to the secondary bag stacking mechanism and folds the packaging bag for the secondary folding. After the secondary folding is completed, the second sliding rail pneumatic gripper grabs the packaging bag into the storage barrel.

[0018] The present invention provides a device and method for cleaning and finishing the inner and outer surfaces of clean packaging bags. It has the following beneficial effects: (1) The device and method for cleaning and finishing the inner and outer surfaces of clean packaging bags of the present invention is a dual-process automated production line that integrates the functions of dual-station synchronous bag taking, double-bag rack alternate bagging and bag turning, plasma wind automatic blowing and bag stacking, and boxing. It is cleverly designed to achieve fully automated operation without the need for manual participation, and at the same time has the effects of cleaning, finishing, removing impurities and removing static electricity, that is, it can complete the production, cleaning and finishing of double-layer packaging bags with high cleanliness requirements. It adopts a dual-station synchronous bag taking and bag turning method to achieve continuous fully automated operation of double-sided synchronous bagging and bag turning in the production of double-layer packaging bags; The modules of the automatic cleaning mechanism and the automatic sorting mechanism are automatically connected, and the bag-removing rotary rack flips the cleaned double-layer packaging bags to the bag-stacking mechanism for automatic folding and sorting, and then the materials are stored by the sliding rail pneumatic clamps. The entire process does not require manual operation, and a high-clean, continuous, fully automated production process from cleaning to sorting of high-purity double-layer packaging bags can be achieved.

[0019] The double-process fully automated production line device has an ingenious and compact structural design. The two sets of processes overlap partially and proceed side by side, effectively saving equipment space and shortening the bag-taking and bag-laying journey. Each production line completes bag-taking, bag-washing, bag-turning and bag-stacking in sequence and simultaneously, effectively saving the waiting time of the parallel double stations and significantly improving the production, cleaning and finishing efficiency of double-layer packaging bags.

[0020] (2) The device of the present invention adopts oil-free track and bottom integrated drive, and arranges the drive and track at the bottom of the equipment frame, which effectively avoids oil and dust from contaminating the materials, and further meets the production, packaging and transportation needs of high-cleanliness double-layer packaging bags.

[0021] (3) The present invention integrates the automatic bag taking and opening mechanism, the automatic bagging mechanism, the bag turning mechanism, the bag washing and blowing mechanism and the automatic sorting mechanism through parallel linear guide rails, slider assemblies and pneumatic push rods, which not only ensures the smooth operation and durability, but also makes it easier to quickly maintain and replace the various mechanism modules, effectively reducing the failure rate and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the internal and external surface cleaning and finishing device for clean packaging bags of the present invention; Figure 2 for Figure 1 The schematic diagram of the device structure in which the automatic bag taking and opening mechanism and the automatic arranging mechanism are removed; Figure 3 for Figure 1 Schematic diagram of the structure of the middle stereogram; Figure 4 for Figure 1 A schematic diagram of a top view of the structure; Figure 5 for Figure 1Schematic diagram of the structure of the rear view.

[0023] In the figure: 1. Equipment frame; 2. Automatic bagging mechanism; 201. First sliding frame; 202. Bagging frame; 203. First transverse bagging rod; 204. Bag-sleeving support frame; 3. Bag washing and blowing mechanism; 301. Air wand upright pole; 302. Plasma air wand; 4. Bag turning mechanism; 401. Rotating column; 402. Bag turning rod; 403. Rotating base; 5. Automatic bag taking and opening mechanism; 501. Bag taking support frame; 502, lifting bag bin; 503, vertical adsorption back plate; 504, bag taking shaft; 505, bag taking turning mechanism; 6, bag stacking mechanism; 601, first supporting plate; 602, second supporting plate; 603, long pressing plate; 604, short pressing plate; 605, pressing rod; 7, material storage barrel; 8, bag removing rotating frame; 9, first slide rail pneumatic gripper; 10, second slide rail pneumatic gripper; 11, clamping pneumatic gripper. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] In the present invention, unless otherwise expressly specified or limited, the terms "connection" and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances. Example 1

[0026] See also Figure 1-Figure 5 , the present invention provides a technical solution: like Figure 1 As shown, the inner and outer surface cleaning and finishing device for clean packaging bags provided by the present invention includes an equipment frame 1, on which an automatic cleaning mechanism and an automatic finishing mechanism are arranged in sequence from front to back; the automatic cleaning mechanism includes an automatic bag taking and opening mechanism 5, an automatic bagging mechanism 2, a bag turning mechanism 4 and a bag washing and purge mechanism 3 arranged on the equipment frame 1; the equipment frames 1 located on the left and right sides of the automatic cleaning mechanism are respectively provided with two groups of automatic bag taking and opening mechanisms 5: a first automatic bag taking and opening mechanism and a second automatic bag taking and opening mechanism.

[0027] like Figure 2As shown, the equipment frame 1 is provided with a set of parallel linear guide rails, and the linear guide rails are provided with multiple sets of sliders: front sliders, middle sliders, and rear sliders. The front slider is connected to the first sliding frame 201 equipped with the automatic bagging mechanism 2, the bag washing and purge mechanism 3 is connected to the linear guide rails via the middle slider, and the rear slider is connected to the bag turning mechanism 4. The automatic bagging mechanism 2 includes a first sliding frame 201 and a bagging frame 202. The bagging frame 202 is slidably connected to the first sliding frame 201 via a left and right sliding mechanism. The left and right sliding mechanism includes left and right pneumatic push rods provided on one side of the first sliding frame 201, and the movable ends of the left and right pneumatic push rods are connected to one side of the bagging frame 202. The bagging frame 202 is provided with a first slider. The left and right pneumatic push rods are extended and retracted to push the first slider of the bagging frame 202 to move left and right relative to each other along the first slide rail on the first sliding frame 201.

[0028] The first sliding frame 201 and the bagging frame 202 are both rectangular frames arranged parallel to each other. The first sliding frame 201 and the bagging frame 202 are also connected to each other for left and right relative sliding movement via a first slider and a first slide rail. This allows the two sets of bagging support frames 204 to be adjusted forward and backward within the distance between the automatic bag-taking and bag-opening mechanisms 5 on the front and rear sides of the equipment frame 1, allowing for rapid switching, thereby achieving efficient switching and alternating operations for dual-station material taking and bagging, thereby improving equipment utilization. Transverse slide rails and transverse pneumatic push rods matching the front and rear slide rails are connected to the front and rear ends of the linear guide rails, respectively. The front and rear slide rails are respectively pushed forward and backward along the transverse slide rails by the transverse pneumatic push rods.

[0029] The left and right side walls of the bagging rack 202 are connected to the bagging support frame 204 via two rearward-facing first transverse bagging rods 203. The bagging support frame 204 is specifically an O-shaped frame that matches the size of the bag opening. Its upper and lower ends are connected to the two side frames of the bagging rack 202 via the first transverse bagging rods 203. The two sets of bagging support frames 204 are respectively matched with two sets of automatic bag removal and opening mechanisms 5. The bagging rack 202 is rigidly connected to the O-shaped bagging support frames 204 via the first transverse bagging rods 203, achieving precise positioning and stable expansion of the bag opening, ensuring efficient coordination with the automatic bag removal and opening mechanism 5, and improving the accuracy and reliability of fully automated packaging. Specifically, pneumatic grippers are provided on both longitudinal sides of the bagging rack 202 for grasping and securing the bag. These grippers are used to continuously clamp the bag opening edges as the bagging support frame 204 retracts, preventing the bag from falling due to inertia or slipping on the contact surface, and ensuring stable transfer after bagging.

[0030] like Figure 2As shown, the bag washing and blowing mechanism 3 is a rectangular frame-type wind rod upright 301 arranged parallel to the bagging frame 202. Its height is greater than the height of the automatic bagging mechanism 2, and its width matches the width of the two linear guide rails. The wind rod upright 301 serves as a vertical support carrier for the plasma wind rod 302, providing it with a rigid installation reference; a group of plasma wind rods 302 arranged vertically opposite to each other are provided on the left and right sides of the rectangular frame-type wind rod upright 301, and plasma blowing ports are evenly distributed on the opposite side of the two plasma wind rods 302; and the bag supporting frame 204 can move laterally through between the plasma wind rods 302, and is used to wash and blow the packaging bags on the automatic bagging mechanism 2 and the bag turning mechanism 4. Using ion wind cleaning can remove static electricity, and can also blow off other impurities adhering to the packaging bags, and finally achieve efficient cleaning treatment inside and outside the bag through high-energy ion flow.

[0031] like Figure 2 As shown, the bag turning mechanism 4 includes a rotating column 401, a rotating base 403 and a bag turning rod 402. The rotating column 401 is arranged vertically, and two groups of horizontally arranged bag turning rods 402 are symmetrically provided on its front and rear side walls. The bag turning rod 402 includes two second horizontal support rods arranged in parallel up and down, and the upper and lower distance between the two second horizontal support rods is less than the upper and lower heights of the O-shaped frame of the bag-covering and bag-supporting frame 204. The two second horizontal support rods can pass through the O-shaped frame of the bag-covering and bag-supporting frame 204 laterally, and are used to turn the packaging bags covered on the bag-covering and bag-supporting frame 204; pneumatic clamps for grabbing and fixing the packaging bags are provided on the front and rear side walls of the rotating column 401 and on the same side connected to the bag-turning rod 402, which are used to fix the packaging bags on the bag-covering and bag-supporting frame 204 after the bag turning operation is completed, to prevent the packaging bags from falling off due to inertia or sliding of the contact surface when the bag-covering and bag-supporting frame 204 is retracted. The bottom of the rotating column 401 is connected to the rear slider on the linear guide through the rotating base 403. When the rotating column 401 slides to the rear end of the linear guide through the rear slider, the rotating column 401 and the rotating base 403 can drive the two sets of bag-turning rods 402 to rotate 360°, or rotate 180° in the forward and reverse directions, so as to move the packaging bags to the automatic sorting mechanism for sorting operations.

[0032] like Figure 3 and Figure 4As shown, it also includes an automatic sorting mechanism, which includes a bag removing mechanism and a bag stacking mechanism 6. The bag removing mechanism includes a bag removing rotating frame 8 that is matched with the rear end of the linear guide rail. The bag removing rotating frame 8 is an F-shaped frame, including a vertical rotating support frame, a horizontal upper support rod and a horizontal lower support rod. The vertical rotating support frame and the upper and lower horizontal support rods constitute a three-way positioning system. The upper opening of the F-shaped frame matches the second horizontal support rod of the bag turning rod 402 and the size of the packaging bag. The second horizontal support rod can be moved to the inside of the upper opening of the F-shaped frame by the rear slider; and the three frame inner side walls inside the upper opening of the F-shaped frame are each provided with a pneumatic clamping claw 11 for clamping the three edges of the packaging bag. When the rear slider drives the second horizontal support rod to move to the inside of the F-shaped frame opening, the pneumatic clamping claws 11 arranged on the three inner side walls act synchronously to accurately clamp the three edges of the packaging bag, ensuring the positioning stability of the bag body. The equipment frame 1 is provided with a first servo motor connected to the vertical rotating support frame. The rotating shaft of the first servo motor is connected to the vertical rotating support frame. The vertical rotating support frame is driven to rotate forward or reverse by the rotation of the rotating shaft of the first servo motor to complete the action conversion of receiving and removing bags.

[0033] The bag stacking mechanism 6 includes a primary bag stacking mechanism and a secondary bag stacking mechanism that are interconnected. The primary bag stacking mechanism includes a first support frame and a long bag stacking frame parallel to the F-shaped frame. A first support plate 601 is located on top of the long bag stacking frame to receive the bags after they have been unpacked. Long pressure plates 603 are also connected to the left and right sides of the first support plate 601, each capable of rotating 180° toward the inner side. The equipment frame 1 is equipped with a horizontal pneumatic slide-type pressure rod 605 that matches the position of the first support plate 601, providing vertical pressure to ensure a flat and even fit of the bags. The position of the first support plate 601 matches the upper opening of the F-shaped frame of the bag unpacking rotating frame 8 when it is rotated to a horizontal position. After the F-shaped frame completes bag unpacking, the bags fall onto the first support plate 601. The long pressure plates 603 on both sides each rotate inward 180°, restraining the left and right positions of the bags. After initial arrangement, the bags enter the secondary bag stacking mechanism for final stacking.

[0034] The secondary bag stacking mechanism includes a second support frame, which is used for a rigid support structure and is coordinated with the primary bag stacking mechanism for positioning. The second support frame is connected to a horizontally arranged second support plate 602, and the second support plate 602 is parallel to the central axis of the first support plate 601 to ensure the centrality of the bag transmission. The second support plate 602 includes an interconnected intermediate fixed main board, and a short pressure plate 604 is respectively provided on the front and rear sides thereof, which can be rotated 180° toward the intermediate fixed main board; a first sliding rail pneumatic clamp 9 is also connected to the second support frame, and the first sliding rail pneumatic clamp 9 moves horizontally back and forth along the second support plate 602, and is used to grab the packaging bag on the first support plate 601 to the second support plate 602.

[0035] like Figure 3 and Figure 4 As shown, a storage bucket 7 is provided at the bottom of one side of the middle fixed mainboard for collecting and placing the stacked packaging bags. A second slide-type pneumatic clamp 10 is also connected at the end of the equipment frame 1 and matches the middle fixed mainboard of the second support plate 602 and the storage bucket 7. The second slide-type pneumatic clamp 10 can be used to clamp the packaging bags to the storage bucket 7 and place them therein. Figure 4 As shown, the side of the first support plate 601 adjacent to the secondary bag stacking mechanism and the side of the second support plate 602 adjacent to the storage barrel 7 are provided with avoidance grooves for the pneumatic grippers to grasp the packaging bags, providing grasping space for the first slide-type pneumatic grippers 9 and the second slide-type pneumatic grippers 10, avoiding mechanical interference with the edges of the primary bag stacking mechanism and the secondary bag stacking mechanism when grasping the packaging bags, and ensuring the smooth transfer of the packaging bags from the bag washing station to the bag stacking station.

[0036] like Figure 3 and Figure 5 As shown, the automatic bag taking and opening mechanism 5 includes a bag taking support frame 501, a lifting bag bin 502, and a bag taking flipping mechanism 505. The bag taking flipping mechanism 505 includes a vertical adsorption back plate 503 arranged on both sides of the linear guide rail and a bag taking shaft 504 arranged on the bag taking support frame 501. The vertical adsorption back plate 503 is provided with a vacuum suction cup matching the packaging bag, and adsorption holes are evenly distributed on the surface for adsorbing the packaging bag; and the lower end of the bag taking shaft 504 is also connected to an extraction pneumatic clamp matching the position of the lifting bag bin 502, which is used to grab the packaging bag in the lifting bag bin 502; the bottom of the lifting bag bin 502 is provided with a lifting mechanism.

[0037] A bag opening gap is left between the vertical adsorption back plate 503 and the bag taking support frame 501, which is used for the bag putting frame 204 in the automatic bag putting mechanism 2 to extend into the bag opening gap to perform the bag putting operation; the bag taking support frame 501 is also provided with a bag opening mechanism that matches the opening of the packaging bag, and the bag opening mechanism is also provided with an opening pneumatic clamp. The bag opening mechanism uses a pneumatic suction cup or a mechanical clamp to accurately open and shape the opening of the packaging bag on the vertical adsorption back plate 503, providing conditions for the bag putting frame 204 to be inserted.

[0038] Specifically, such as Figure 5 As shown, a fixed rib plate is fixedly connected to the front of the first sliding frame 201 on the linear guide rail, and the bottoms of the two fixed ribs are slidably connected to the slider on the linear guide rail; it is used to enhance the rigidity of the first sliding frame 201 and guide the automatic bagging mechanism 2 to move smoothly, ensuring the positioning accuracy and structural stability during double-station material collection.

[0039] like Figure 1As shown, a trapezoidal dust hood is located above the linear guide rails and within the washing and blowing range of the bag washing and purge mechanism 3. Both ends of the hood are supported and fixed by vertical rectangular washing and blowing racks, both of which are fixedly connected to the outside of the equipment frame 1. The dust hood is supported and fixed by the washing and blowing racks. During the bag washing and purge operation, the dust hood collects dust and other pollutants generated by the plasma airflow, ensuring a clean production environment and cooperating with the purge mechanism to precisely control the washing and blowing distance.

[0040] The inner and outer surface cleaning and finishing device for clean packaging bags of the present invention integrates the functions of double-station synchronous bag taking, double bag racks alternately bagging and turning bags, automatic plasma wind blowing and cleaning, bag stacking, and boxing into a double-process automated production line. It has an ingenious design and a high degree of automation. It adopts a double-station synchronous bag taking and bagging method, and has the effects of cleaning, finishing, removing impurities, and removing static electricity. It realizes the continuous operation of double-sided synchronous bagging and bag turning in the production of double-layer packaging bags, which significantly improves production efficiency. At the same time, the modules of the automatic cleaning mechanism and the automatic sorting mechanism are automatically connected, and the bag-removing rotary frame 8 flips the cleaned double-layer packaging bags to the bag stacking mechanism 6 for automatic folding and sorting, and then the material storage is completed by the sliding rail pneumatic clamp. The entire process does not require manual operation, and a high-clean, continuous, fully automated production process of high-purity double-layer packaging bags from cleaning to sorting can be realized. Example 2

[0041] The method for cleaning and finishing the inner and outer surfaces of clean packaging bags of the present invention adopts the cleaning and finishing device for the inner and outer surfaces of clean packaging bags in Example 1, and uses a controller to precisely control the actions of each module device according to a set program. The fully automated operation process specifically includes: S1. Automatic bag taking and opening process: Use the automatic bag taking and opening mechanism 5 to extract and open the bag, specifically including the following: The packaging bags are placed in the two corresponding lifting bag bins 502, with the bag openings facing the bag-laying and bag-supporting frames 204. After the grabbed packaging bags are lifted vertically and adsorbed onto the vertical adsorption back plate 503, the pneumatic grippers of the bag-opening mechanism are actuated to grip the bag opening of the unadsorbed side and pull it outwards, waiting for the bag-laying operation. S2. Automatic bagging and cleaning process: Use the automatic bagging mechanism 2, the bag washing and purge mechanism 3 and the bag turning mechanism 4 to clean the packaging bag, specifically including the following, S21. The transverse pneumatic push rod pushes the front slider to move backward along the transverse slide rail, and at the same time drives the first transverse bagging rod 203 on the left side of the bagging rack 202 to drive the left bagging support frame 204 to move backward and extend into the first packaging bag opened in step S1 on the left side, and clamps the end opening of the first packaging bag with the pneumatic clamp. Then, the transverse pneumatic push rod drives the front slider to move forward along the transverse slide rail to the front end. Then, the left and right pneumatic push rods are extended and retracted to push the bagging rack 202 to move rightward along the first slide rail on the first sliding rack 201 to the right end; at this time, the first transverse bagging rod 203 on the left side of the bagging rack 202 drives the first packaging bag to move to the first purge station of the bag washing and purge mechanism 3, waiting for the purge operation. S22. Under the control of the controller, the central slider is moved forward and backward by a transverse pneumatic push rod, driving the bag washing and purge mechanism 3 to purge the left and right sides of the first bag. After the front of the bag is purge completed, the bag washing and purge mechanism 3 is reset to fully purge the front and outer walls of the first bag. Then the front end slider is pushed backward along the horizontal slide rail by the horizontal pneumatic push rod to enter the bag turning mechanism 4; The first packaging bag moves backward under the drive of the first transverse bagging rod 203 on the left side, and the front second transverse support rod passively passes through the middle of the O-shaped frame of the bagging support frame 204 at the rear end of the first transverse bagging rod 203 on the left side. The first packaging bag is passively reversely put on the second transverse support rod at the front end of the bag turning rod 402 and enters the second purge station to wait for the purge operation; Then, the middle slider is pushed backward by the transverse pneumatic push rod, driving the bag washing and blowing mechanism 3 to blow and wash the outer side of the back of the first packaging bag; after the back of the packaging bag is blown and washed, the bag washing and blowing mechanism 3 is reset to achieve a comprehensive blowing and washing operation on the front and back of the first packaging bag; At the same time, the first transverse bagging rod 203 on the right side of the bagging rack 202 drives the right bagging support frame 204 to move backward and extend into the second packaging bag opened in step S1 on the right side, and clamps the end opening thereof with a pneumatic clamp; S23. Then, the front slider is pushed forward along the horizontal slide rail to the front end by the horizontal pneumatic push rod. The left and right pneumatic push rods are extended and retracted to push the bagging rack 202 to the left along the first slide rail on the first sliding rack 201 to the left end; at this time, the first transverse bagging rod 203 on the right side of the bagging rack 202 drives the second packaging bag to move to the first purge station of the bag washing and purge mechanism 3, waiting for the purge operation; Continue to purge the outside of the second bag. Then, the front end slide is pushed backward along the horizontal slide rail by the horizontal pneumatic push rod, and at the same time, the bagging frame 204 on the left side is driven to move backward and extend into the third packaging bag opened in step S1 on the left side, and the end opening is clamped by the pneumatic clamping claw, and then the bag waits to enter the first purge station; At the same time, the second packaging bag on the first transverse bagging rod 203 on the right side is also passively reversely sleeved on the outside of the first packaging bag on the second transverse support rod at the front end, and enters the second purge station for the purge operation; S24. After completing the purging and bagging operations of the double bags in step S23, when the rear slider of the bag turning mechanism 4 moves backward to the rear end of the linear guide rail, the rotating column 401 of the bag turning mechanism 4 is rotated 180°, and the front second horizontal support rod with the double bag is turned to the bag removing mechanism for the bag removing operation; the double-layer clean packaging bag that has been removed is moved to the automatic sorting mechanism for the automatic sorting operation.

[0042] In addition, after the bag removal operation is completed, the rear slider is pushed forward by the horizontal pneumatic push rod to reset to the bag turning position, waiting for the subsequent bag turning and secondary purge operations; S25. After the front slider is pushed forward to the front end along the transverse slide rail by the transverse pneumatic push rod, the bag rack 202 is pushed to the right along the first slide rail on the first slide rack 201 to the right end by the left and right pneumatic push rods. The third packaging bag enters the first purge station.

[0043] S26. Repeat the above steps S21-S25 to achieve bilateral synchronous bagging and bag turning for continuous operation.

[0044] Among them, the double-layer clean packaging bag after being taken off is moved to the automatic sorting mechanism for automatic sorting operation, which specifically includes: the clamping pneumatic clamp 11 on the bag-removing rotating frame 8 clamps the three edges of the packaging bag on the second horizontal support rod, and after the packaging bag is taken off from the second horizontal support rod of the bag-turning mechanism 4, the bag-removing rotating frame 8 flips 90° from the vertical state to the horizontal state, releases the clamping pneumatic clamp 11, and squares the packaging bag onto the one-time bag stacking mechanism. The pressure rod 605 moves above the packaging bag under the drive of the cylinder to press the packaging bag, and is folded inward 180° through the long pressure plates 603 on both sides for one fold. After the first fold is complete, the first pneumatic gripper 9, driven by the cylinder, grabs the bag and places it on the secondary bag-folding mechanism. The short pressure plates 604 on either side are then folded inward 180° to perform a secondary fold. After the secondary fold is complete, the second pneumatic gripper 10 at the end of the equipment frame 1, driven by the cylinder, grabs the bag and places it in the storage bucket 7, completing the automatic arrangement of the double-layer clean bags. When a storage bucket 7 is filled with the set number of clean, fully cleaned bags, the bucket 7 can be sealed by simply closing the lid and transported to the next process.

[0045] In summary, the present invention's internal and external surface cleaning and finishing device and method for clean packaging bags utilizes a dual-process, fully automated production line device with an ingenious and compact structural design and a high degree of automation. It requires no human intervention and simultaneously performs cleaning, finishing, impurity removal, and static removal. This allows for the production and cleaning of double-layer packaging bags with high cleanliness requirements. The two sets of processes overlap and proceed side by side, effectively saving equipment footprint and shortening the bag-taking and bag-laying travel time. Each production line simultaneously completes bag-taking, bag-washing, bag-turning, and bag-stacking, effectively saving waiting time for the parallel dual stations and significantly improving the efficiency of double-layer bag production and cleaning. This device is suitable for use in packaging bag transportation and processing devices for industries such as food, medicine, and electronics, where strict requirements are placed on the cleanliness, efficiency, and reliability of the packaging bags for bagged products.

[0046] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A device for cleaning and finishing the inner and outer surfaces of clean packaging bags, characterized in that: It comprises an equipment frame (1), on which an automatic cleaning mechanism and an automatic tidying mechanism are sequentially arranged from front to back; The automatic cleaning mechanism comprises an automatic bag taking and opening mechanism (5), an automatic bagging mechanism (2), a bag turning mechanism (4) and a bag washing and blowing mechanism (3) arranged on the equipment frame (1); Two sets of automatic bag taking and opening mechanisms (5) are respectively provided on the equipment frame (1) located on the left and right sides of the automatic cleaning mechanism: a first automatic bag taking and opening mechanism and a second automatic bag taking and opening mechanism. The equipment frame (1) is provided with a set of parallel linear guide rails, and the linear guide rails are provided with multiple sets of sliders: a front slider, a middle slider and a rear slider. The front slider is connected to a first sliding frame (201) provided with an automatic bagging mechanism (2), the bag purge mechanism (3) is connected to the linear guide rails through the middle slider, and the rear slider is connected to a bag turning mechanism (4). The automatic bagging mechanism (2) comprises a first sliding frame (201) and a bagging frame (202), wherein the bagging frame (202) is connected to the first sliding frame (201) in a slidable manner via a left-right sliding mechanism; The left and right side walls of the bagging rack (202) are connected to the bagging support frame (204) via a first transverse bagging rod (203) arranged backward; the two groups of bagging support frames (204) are matched with two groups of automatic bag taking and opening mechanisms (5) respectively.

2. The device for cleaning and finishing the inner and outer surfaces of clean packaging bags according to claim 1, characterized in that: The front and rear ends of the linear guide rail are respectively connected with transverse slide rails and transverse pneumatic push rods that match the front slider, the middle slider, and the rear slider. The front slider, the middle slider, and the rear slider are respectively pushed forward and backward along the transverse slide rails by the transverse pneumatic push rods. The first sliding frame (201) and the bagging frame (202) are both rectangular frames arranged parallel to each other, and the first sliding frame (201) and the bagging frame (202) are also connected to each other in a left-right relative sliding manner via a first slider and a first slide rail; The left-right sliding mechanism includes a telescopic left-right pneumatic push rod provided on one side of the first sliding frame (201), wherein the movable end of the telescopic left-right pneumatic push rod is connected to one side of the bagging frame (202), and a first slider is provided on the bagging frame (202). The first slider of the bagging frame (202) is pushed to move relatively left-right along the first slide rail on the first sliding frame (201) by the telescopic left-right pneumatic push rod.

3. The device for cleaning and finishing the inner and outer surfaces of clean packaging bags according to claim 2, characterized in that: The left and right side frames of the bagging rack (202) are both connected to the bagging support frame (204) via two first transverse bagging rods (203) arranged backward; The bagging support frame (204) is specifically an O-shaped frame that matches the size of the bag opening of the packaging bag, and its upper and lower ends are connected to the frames on both sides of the bagging frame (202) through the first transverse bagging rod (203).

4. The device for cleaning and finishing the inner and outer surfaces of clean packaging bags according to claim 2, characterized in that: The bag washing and blowing mechanism (3) is a rectangular frame-type wind rod upright pole (301) arranged in parallel with the bag-covering frame (202). A group of plasma wind rods (302) arranged vertically opposite to each other are provided on the left and right sides of the rectangular frame-type wind rod upright pole (301), and the bag-covering bag-supporting frame (204) can pass through between the plasma wind rods (302) to move laterally.

5. The device for cleaning and finishing the inner and outer surfaces of clean packaging bags according to claim 4, characterized in that: The bag turning mechanism (4) comprises a rotating column (401), a rotating base (403) and a bag turning rotating rod (402), wherein the rotating column (401) is arranged vertically and two groups of bag turning rotating rods (402) are symmetrically arranged horizontally on its front and rear side walls, and the bag turning rotating rod (402) comprises two second horizontal support rods arranged vertically and parallel to each other, and the vertical distance between the two second horizontal support rods is smaller than the vertical height of the O-shaped frame of the bag-covering bag-supporting frame (204), and the two second horizontal support rods can horizontally pass through the O-shaped frame of the bag-covering bag-supporting frame (204); The bottom of the rotating column (401) is connected to the rear slider on the linear guide rail through the rotating base (403). When the rotating column (401) slides to the rear end of the linear guide rail through the rear slider, the rotating column (401) and the rotating base (403) can drive the two sets of bag turning rods (402) to rotate 360 degrees, or rotate 180 degrees in both the forward and reverse directions.

6. The device for cleaning and finishing the inner and outer surfaces of clean packaging bags according to claim 5, characterized in that: It also includes an automatic sorting mechanism, which includes a bag removing mechanism and a bag stacking mechanism (6). The bag-removing mechanism includes a bag-removing rotating frame (8) matched with the rear end of the linear guide rail, and the bag-removing rotating frame (8) is an F-shaped frame, including a vertical rotating support frame, a horizontal upper support rod and a horizontal lower support rod. The upper opening of the F-shaped frame matches the second horizontal support rod of the bag-turning rotating rod (402) and the size of the packaging bag, and the second horizontal support rod can move with the rear slider to the inside of the upper opening of the F-shaped frame; and the three frame inner side walls located inside the upper opening of the F-shaped frame are each provided with a pneumatic clamping claw (11) for clamping the three edges of the packaging bag. The equipment frame (1) is provided with a first servo motor connected to the vertical rotating support frame. The rotating shaft of the first servo motor is connected to the vertical rotating support frame, and the vertical rotating support frame is driven to rotate in a forward or reverse direction by the rotation of the rotating shaft of the first servo motor.

7. The device for cleaning and finishing the inner and outer surfaces of clean packaging bags according to claim 6, characterized in that: The bag stacking mechanism (6) comprises a primary bag stacking mechanism and a secondary bag stacking mechanism connected to each other. The one-time bag stacking mechanism comprises a first support frame and a long bag stacking frame parallel to the F-shaped frame, a first supporting plate (601) is provided on the top of the long bag stacking frame, and long pressing plates (603) that can rotate 180 degrees toward the inner side of the upper part are connected to the left and right sides of the first supporting plate (601). The equipment frame (1) is provided with a slide rail type pressure rod (605) that matches the position of the first supporting plate (601); The position of the first supporting plate (601) matches the upper opening position of the F-shaped frame of the bag-removing rotating frame (8) when the F-shaped frame is rotated to a horizontal position; The secondary bag stacking mechanism comprises a second support frame, a second support plate (602) arranged horizontally is connected to the second support frame, and the second support plate (602) is parallel to the central axis of the first support plate (601), and the second support plate (602) comprises an interconnected middle fixed main plate, and short pressure plates (604) are respectively provided on the front and rear sides thereof and can be rotated 180 degrees toward the middle fixed main plate; A first slide-rail pneumatic clamp (9) is also connected to the second support frame, and the first slide-rail pneumatic clamp (9) moves horizontally back and forth along the second support plate (602).

8. The device for cleaning and finishing the inner and outer surfaces of clean packaging bags according to claim 7, characterized in that: A material storage barrel (7) is provided at the bottom of one side of the intermediate fixed main board, and a second slide-type pneumatic clamp (10) matching the intermediate fixed main board with the second supporting plate (602) and the material storage barrel (7) is also connected at the end of the equipment frame (1). The packaging bag can be clamped to the position of the material storage barrel (7) by the second slide-type pneumatic clamp (10) and placed therein; The automatic bag taking and opening mechanism (5) comprises a bag taking support frame (501), a bag lifting bin (502), and a bag taking and turning mechanism (505). The bag taking and turning mechanism (505) comprises a vertical adsorption back plate (503) provided on both sides of the linear guide rail and a bag taking rotating shaft (504) provided on the bag taking support frame (501), a vacuum suction cup matching the packaging bag is provided on the vertical adsorption back plate (503), and an extraction pneumatic clamp matching the position of the bag lifting bin (502) is connected to the lower end of the bag taking rotating shaft (504). The bag taking support frame (501) is also provided with a bag opening mechanism that matches the opening of the packaging bag, and the bag opening mechanism is also provided with an opening pneumatic clamp. A bag-opening gap is left between the vertical adsorption back plate (503) and the bag-taking support frame (501), and is used for the bag-opening gap to allow the bag-holding frame (204) in the automatic bag-laying mechanism (2) to extend into the bag-opening gap to perform bag-laying operations; A lifting mechanism is provided at the bottom of the lifting bag bin (502).

9. A method for cleaning and finishing the inner and outer surfaces of a clean packaging bag, characterized in that: The inner and outer surface cleaning and finishing device for clean packaging bags according to any one of claims 6 to 8 is used, and under the control of a controller, the specific operating steps include the following: S1. Automatic bag taking and opening process: The automatic bag taking and opening mechanism (5) is used to extract and open the packaging bag. After the packaging bag is vertically lifted and adsorbed onto the vertical adsorption back plate (503), the bag opening of the packaging bag on the side not adsorbed is pulled outwards to wait for the bagging operation; S2. Automatic bagging and cleaning process: Use the automatic bagging mechanism (2), the bag washing and blowing mechanism (3) and the bag turning mechanism (4) to blow and wash the bagging operation on the front and back of the packaging bag, specifically including the following: S21. The bagging frame (204) on the left side of the bagging rack (202) moves backward and extends into the first packaging bag opened in step S1 on the left side. After the front slider moves forward to the front end, the bagging rack (202) moves to the right end of the first sliding rack (201); at this time, the first packaging bag moves to the first purge station of the bag washing and purge mechanism (3) and waits for the purge operation. S22. The bag washing and blowing mechanism (3) moves forward to perform a blowing operation on both sides of the front of the first packaging bag; after the blowing is completed, the bag washing and blowing mechanism (3) is reset to achieve a comprehensive blowing operation on the front outer side wall of the first packaging bag; The first packaging bag moves backward through the front slider and enters the bag turning mechanism (4). The first packaging bag is passively reversed and sleeved on the front second transverse support rod, enters the second purge station, and waits for the purge operation. The bag washing and blowing mechanism (3) moves backward to perform a blowing operation on the outer side of the back side of the first packaging bag; after the blowing is completed, the bag washing and blowing mechanism (3) is reset to achieve a comprehensive blowing operation on the front and back sides of the first packaging bag; At the same time, the bag holding frame (204) on the right side of the bagging rack (202) is driven to move backward synchronously and extend into the second packaging bag opened in step S1 on the right side; S23. After the second packaging bag moves forward to the front end, the bagging rack (202) moves to the left end of the first sliding rack (201); at this time, the second packaging bag moves to the first purge station and waits for the purge operation; after continuing to purge the front outer side of the second packaging bag, The left bagging and supporting frame (204) moves backward and extends into the third packaging bag opened in step S1 on the left side, waiting to enter the first purge station; At the same time, the second packaging bag on the first transverse bagging rod (203) on the right side is also passively reversely sleeved on the outside of the first packaging bag on the second transverse support rod at the front end, enters the second purge station, and performs a purge operation, thereby realizing a double-bag purge and bagging operation.

10. The method for cleaning and finishing the inner and outer surfaces of a clean packaging bag according to claim 9, characterized in that: The specific steps also include: S24. After the double bagging operation is completed in step S23, when the rear slider of the bag turning mechanism (4) moves backward to the rear end of the linear guide rail, the rotating column (401) of the bag turning mechanism (4) is rotated 180 degrees, and the front second transverse support rod with the double bag is turned to the bag removing mechanism to perform the bag removing operation; the double-layer clean packaging bag that has been removed is moved to the automatic sorting mechanism for automatic sorting; In addition, after the bag removal operation is completed, the rear slider will reset forward to the bag turning station, waiting for the subsequent bag turning and secondary purge operations; S25. After the front slider moves forward along the transverse slide rail to the front end, the bagging rack (202) moves to the right end of the first sliding rack (201); the third packaging bag enters the first purge station; S26 repeat the above steps S21-S25 to achieve bilateral synchronous bagging and bag turning continuous operation; The double-layer clean packaging bag after being taken off is moved to the automatic sorting mechanism for automatic sorting operation, which specifically includes: after the bag-taking rotating frame (8) of the automatic sorting mechanism takes off the packaging bag from the second transverse support rod of the bag-turning mechanism (4), the F-shaped frame is turned 90 degrees to the right to place the packaging bag flat on the primary bag-folding mechanism for the first folding; the first slide-type pneumatic clamp (9) on the secondary bag-folding mechanism grabs the packaging bag onto the secondary bag-folding mechanism and folds the packaging bag for the second time. After the secondary folding is completed, the second slide-type pneumatic clamp (10) grabs the packaging bag into the storage barrel (7).

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