CN216916522U

CN216916522U - Wrapping bag distraction device and wrapping bag cover bagging apparatus

Info

Publication number: CN216916522U
Application number: CN202122781643.2U
Authority: CN
Inventors: 周士光
Original assignee: Ningbo Taibao Intelligent Technology Co ltd
Current assignee: Ningbo Taibao Intelligent Technology Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-07-08
Anticipated expiration: 2031-11-12

Abstract

The utility model discloses a packaging bag opening device and a packaging bag bagging device, which comprise an indexing type rotating mechanism, a plurality of bagging sleeves arranged in an annular array, a storage disc and an opening device, wherein the opening device comprises a stacking frame stacked with packaging bags, a bag taking mechanism positioned beside the side surface of the packaging bags and a bag opening paw positioned beside the bag opening of the packaging bags correspondingly; the bag taking mechanism comprises a vertical lifting driving mechanism, and a lifting part of the vertical lifting driving mechanism is provided with a bag taking structure for grabbing the packaging bag; the bag opening expanding paw comprises an upper expanding plate, a lower expanding plate and a paw driving mechanism for driving at least one of the upper expanding plate and the lower expanding plate to move up and down, wherein a first vacuum sucker is arranged on the lower side wall of the upper expanding plate, and a second vacuum sucker is arranged on the upper side wall of the lower expanding plate. The operation steps are automatically completed, so that the working efficiency is improved, and the labor cost is reduced.

Description

Wrapping bag distraction device and wrapping bag cover bagging apparatus

Technical Field

The utility model relates to the technical field of automatic packaging, in particular to a packaging bag opening device and a packaging bag sleeving device.

Background

The packaging process of the packaging bag is to pack the product by packaging the product into the packaging bag and then sealing the opening of the packaging bag, but the product packaging process usually includes a packaging bag supplying process, a product pushing process, an opening heat sealing process of the packaging bag, and the like. Traditional packing production, the wrapping bag supplied materials do not expand the shaping, and the wrapping bag is the platykurtic, needs to open its open-ended one end greatly, just can carry out subsequent packing process, and the wrapping bag is mainly through artifical mode with the turnover between each process, and manual cover bag makes work efficiency low, and the cost of labor is too high.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a bag opening device and a bag covering device for solving the above-mentioned technical disadvantages, and the specific configurations thereof are as follows.

The utility model designs a packaging bag opening device which comprises a stacking frame, a bag taking mechanism and a bag opening paw, wherein the stacking frame is stacked with packaging bags, the bag taking mechanism is positioned beside the side surface of each packaging bag, and the bag opening paw is correspondingly positioned beside the bag opening of each packaging bag; the bag taking mechanism comprises a vertical lifting driving mechanism, and a lifting part of the vertical lifting driving mechanism is provided with a bag taking structure for grabbing the packaging bag; the bag opening expanding paw comprises an upper expanding plate, a lower expanding plate and a paw driving mechanism for driving at least one of the upper expanding plate and the lower expanding plate to move up and down, wherein a first vacuum sucker is arranged on the lower side wall of the upper expanding plate, and a second vacuum sucker is arranged on the upper side wall of the lower expanding plate.

Preferably, the bag taking mechanism further comprises a first horizontal translation driving mechanism, and the vertical lifting driving mechanism is fixed on the translation part of the first horizontal translation driving mechanism. The structure of the bag taking mechanism can displace the packaging bag obtained by the bag taking mechanism, so that the bag opening part of the packaging bag can be arranged between the first vacuum sucker and the second vacuum sucker.

Preferably, the bag taking structure comprises a plate body and at least one third vacuum chuck, the third vacuum chuck is mounted on the plate body, and the plate body is fixed on the lifting part of the vertical lifting driving mechanism. It utilizes vacuum chuck to get the bag for it is comparatively reliable that the wrapping bag takes off, promotes performance.

As preferred, pile up the frame including getting the sack, get the bag structure and be located and get the sack below, pile up the frame and lie in the week side of getting the sack and be provided with wrapping bag limit structure, wrapping bag limit structure gets the pin of the sack left and right sides and sets up in getting the baffle of both sides around the sack including setting up, perhaps wrapping bag limit structure gets the baffle of the sack left and right sides and sets up in getting the pin of both sides around the sack including setting up. The bag mechanism is arranged to achieve bag taking under the bag taking mechanism, and the packaging bag limiting structure can position the packaging bags stacked on the stacking frame, so that the bags can be taken conveniently.

Preferably, the lower end of the baffle is provided with a supporting plate, the supporting plate is arranged in the bag taking opening, and the supporting plate enables the two corresponding side parts of the packaging bag to be respectively supported and stably placed with the supporting plate.

Preferably, the gripper driving mechanism comprises a mounting plate, a first vertical slide rail, a second vertical slide rail, a rotary swing rod and a rotary driving mechanism for driving the rotary swing rod to rotate, the first vertical slide rail and the second vertical slide rail are arranged in parallel, a sliding block of the first vertical slide rail and a sliding block of the second vertical slide rail are both fixed on the mounting plate, a height difference exists between the lower end part of a guide rail of the first vertical slide rail and the lower end part of a guide rail of the second vertical slide rail, long holes are formed in two ends of the rotary swing rod, connecting bolts are inserted into the two long holes and are respectively connected with the guide rail of the first vertical slide rail and the guide rail of the second vertical slide rail, the rotary driving mechanism is connected with the middle part of the rotary swing rod, the upper expanding plate is fixed at the lower end part of the first vertical slide rail, and the lower expanding plate is fixed at the lower end part of the second vertical slide rail. The structure of the utility model enables the upper and lower opening plates to be folded or separated from each other, so as to open the closed bag mouth.

Preferably, the rotary driving mechanism comprises a gear, a rack, a rotary shaft and a translation driver, the rotary shaft is rotatably mounted on the mounting plate, one end of the rotary shaft is connected with the middle part of the rotary swing rod, the gear is sleeved at the other end of the rotary shaft, the gear is meshed with the rack, the translation driver is fixed on the mounting plate, and the translation part of the translation driver is connected with the rack. The structure of the swing rod enables the rotation of the rotary swing rod to be stable and reliable.

Preferably, the device further comprises a second horizontal translation driving mechanism, and the mounting plate is fixed on the second horizontal translation driving mechanism. The structure of the bag opening driving device is convenient for driving the packing bag with the opened bag opening to be close to the bag sleeving sleeve.

As preferred, still include the regulating plate, the workstation, be fixed in horizontal linear guide and the alignment jig on the workstation, be provided with the screw hole on the alignment jig, threaded connection adjusting screw on the screw hole, the regulating plate is fixed in on horizontal linear guide's the slider, the alignment jig is located the tip side of horizontal linear guide, and adjusting screw and regulating plate fixed connection, the stacking rack, the horizontal translation actuating mechanism of second and first horizontal translation actuating mechanism all install on the regulating plate, its setting up of regulation structure makes the open wrapping bag of sack can the position adjustment, it corresponds with the cover bag sleeve on right side to reach the open wrapping bag of sack, thereby be convenient for cover the bag.

In another aspect, a bag sleeving device for packing bags comprises an indexing type rotating mechanism, a plurality of bag sleeving sleeves arranged in an annular array, the material storage disc comprises a material storage space, the material storage space corresponds to a material outlet, a material pushing mechanism for pushing workpieces in the material storage space and entering the packaging bag through the material outlet and the bag sleeving sleeves is arranged behind the material outlet, and the material pushing mechanism comprises a material pushing block matched with the material storage space and a material pushing driving mechanism for driving the material pushing block to move horizontally.

Preferably, a mounting frame is arranged above the material storage space, a lifting driver is arranged on the mounting frame, a vibration mechanism is arranged on a lifting part of the lifting driver, and the vibration mechanism is arranged corresponding to the material storage space. The structure vibration mechanism can vibrate and arrange a plurality of products after contacting with the products in the storage space.

Preferably, the bagging sleeve comprises two half shells which are symmetrically arranged, one ends of the two half shells are hinged to pin shafts on two opposite sides of the discharge port respectively, the outer walls of the two half shells are provided with positioning plates respectively, the two positioning plates are connected with adjusting bolts through threads, the two positioning plates are connected with the rotary disk through tension springs respectively, through holes are formed in two opposite sides of each discharge port on the rotary disk respectively, the two through holes correspond to the two adjusting bolts respectively, a pushing cylinder is installed on the installation frame and located behind the upper end of the rotary disk, a pushing block is installed on a piston rod of the pushing cylinder, two push rods are installed on the pushing block and penetrate through the two through holes respectively to be abutted to the rear end of the adjusting bolt, and the two positioning plates are connected with the rotary disk through the tension springs. The structure of the bag opening clamp is arranged to keep a fully opened state for the product to be pushed into the packaging bag conveniently through the opened bag opening.

According to the packaging bag opening device and the packaging bag sleeving device, after the packaging bags on the stacking frame are taken by the bag taking mechanism, the bag opening of the packaging bags on the bag taking mechanism is opened by the bag opening paw, the packaging bags with the opened bag openings are sleeved on the bag sleeving sleeve, and products are pushed in.

Drawings

FIG. 1 is a schematic view of the overall structure (one);

FIG. 2 is an enlarged view at A;

FIG. 3 is an enlarged view at B;

FIG. 4 is an enlarged view at C;

FIG. 5 is a schematic view of the overall structure (two);

FIG. 6 is an enlarged view at D;

FIG. 7 is a schematic view (III) of the overall structure;

fig. 8 is a schematic view (iv) of the overall structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

Example 1:

as shown in the drawings, the packaging bag opening device described in the present embodiment includes a stacking rack 201 on which packaging bags 220 are stacked, a bag taking mechanism 210 located beside a side surface of the packaging bags 220, and a bag opening claw 215 located beside a bag opening of the packaging bags 220; the bag taking mechanism 210 comprises a vertical lifting driving mechanism 206, and a lifting part of the vertical lifting driving mechanism 206 is provided with a bag taking structure 207 for grabbing the packaging bag; the bag opening paw 215 comprises an upper opening plate 214, a lower opening plate 213 and a paw driving mechanism for driving at least one of the upper opening plate 214 and the lower opening plate 213 to move up and down, a first vacuum chuck 242 is arranged on the lower side wall of the upper opening plate 214, and a second vacuum chuck 243 is arranged on the upper side wall of the lower opening plate 213; wherein the vertical lifting driving mechanism 206 adopts a lifting cylinder, and the stacking rack 201 is fixed on the adjusting plate 219 through a bracket 211.

Preferably, the bag taking structure 207 comprises a plate body 208 and at least one third vacuum chuck 209, the third vacuum chuck 209 is installed on the plate body 208, the plate body 208 is fixed on the lifting part of the vertical lifting driving mechanism 206, the number of the third vacuum chucks 209 is four, the rectangular array is arranged at the edge part position on the plate body 208, four holes are formed in the plate body 208, movable tubes 232 are respectively inserted into the four holes, the lower ends of the movable tubes 232 are limited by connecting nuts, the third vacuum chuck 209 is installed at the upper ends of the piston tubes, return springs 233 are sleeved on the movable rods, and two ends of the return springs 233 respectively abut against the plate body 208 and the third vacuum chucks 209.

Preferably, the bag taking mechanism 210 further includes a first horizontal translation driving mechanism 212, the vertical lifting driving mechanism 206 is fixed on the translation portion of the first horizontal translation driving mechanism 212, the first horizontal translation driving mechanism 212 adopts a horizontal translation cylinder, the end of the piston rod of the horizontal translation cylinder is fixed on the adjusting plate 219, and the lifting cylinder is fixed on the cylinder body of the horizontal translation cylinder.

In the above, the first vacuum chuck 242, the second vacuum chuck 243 and the third vacuum chuck 209 are respectively connected to and controlled by the PLC controller through the air pump.

Based on the above, the piston rod of the lifting cylinder stretches out, so that the third vacuum chuck 209 adsorbs and snatchs after contacting with the side of the packaging bag, then the piston rod of the lifting cylinder retracts, the piston rod of the horizontal translation cylinder stretches out to convey the bag opening of the packaging bag to between the first vacuum chuck 242 and the second vacuum chuck 243, then the upper opening plate 214 and the lower opening plate 213 are folded with each other, the first vacuum chuck 242 and the second vacuum chuck 243 respectively adsorb with the upper side and the lower side of the bag opening of the packaging bag in a contact manner, then, the upper opening plate 214 and the lower opening plate 213 are separated from each other to open the bag opening of the packaging bag, thereby completing the automatic bag opening operation, and the lifting cylinder is connected with the PLC through an air pump and controlled by the air pump.

In this embodiment, the stacking rack 201 includes a bag taking opening 202, the bag taking structure 207 is located below the bag taking opening 202, a packaging bag limiting structure 203 is arranged on the stacking rack 201 on the periphery of the bag taking opening 202, the packaging bag limiting structure 203 includes a baffle 205 arranged on the left and right sides of the bag taking opening 202 and baffles 204 arranged on the front and rear sides of the bag taking opening 202, or the packaging bag limiting structure 203 includes a baffle 204 arranged on the left and right sides of the bag taking opening 202 and baffles 205 arranged on the front and rear sides of the bag taking opening 202; the lower end of the baffle 204 is provided with a support plate 263, the support plate 263 is placed in the bag taking opening 202, so that the two corresponding side parts of the packaging bag 220 are respectively supported and stably placed with the support plate 263, and the baffle 204 are both fixed on the stacking rack 201 through bolts.

In this embodiment, the paw driving mechanism comprises a mounting plate 251, a first vertical slide rail 244, a second vertical slide rail 245, a rotary swing link 246 and a rotary driving mechanism 250 for driving the rotary swing link 246 to rotate, the first vertical slide rail 244 and the second vertical slide rail 245 are arranged in parallel with each other, the slide block of the first vertical slide rail 244 and the slide block of the second vertical slide rail 245 are both fixed on the mounting plate 251, the lower end part of the guide rail of the first vertical slide rail 244 has a height difference with the lower end part of the guide rail of the second vertical slide rail 245, two ends of the rotary swing rod 246 are provided with elongated holes 247, connecting bolts 248 are inserted into the two elongated holes 247, the two connecting bolts 248 are respectively connected with the guide rail of the first vertical slide rail 244 and the guide rail of the second vertical slide rail 245, the rotary driving mechanism 250 is connected with the middle part of the rotary swing rod 246, the upper spreader plate 214 is fixed at the lower end part of the first vertical slide rail 244, and the lower spreader plate 213 is fixed at the lower end part of the second vertical slide rail 245; after the connecting screw moves in the elongated hole 247 by clockwise rotation of the rotary swing rod 246, the guide rail of the first vertical slide rail 244 is translated upwards, the guide rail of the second vertical slide rail 245 is translated downwards, so that the upper opening plate 214 and the lower opening plate 213 are folded with each other, and the first vacuum suction cup 242 and the second vacuum suction cup 243 are respectively contacted and adsorbed with the upper side and the lower side of the bag opening of the packaging bag; or, after the connecting screw moves in the elongated hole 247 by using the counterclockwise rotation of the rotary swing link 246, the downward translation of the guide rail of the first vertical slide rail 244 is achieved, and the upward translation of the guide rail of the second vertical slide rail 245 is achieved, so that the upper opening plate 214 and the lower opening plate 213 are separated from each other to open the mouth portion of the packing bag, thereby completing the automatic mouth opening operation.

Preferably, the rotary driving mechanism 250 includes a gear 254, a rack 255, a rotary shaft 249, and a translation driver 253, the rotary shaft 249 being rotatably mounted on the mounting plate 251, and one end of the rotary shaft 249 being connected to a middle portion of the rotary swing link 246, the gear 254 being sleeved on the other end of the rotary shaft 249, the gear 254 being engaged with the rack 255, the translation driver 253 being fixed on the mounting plate 251, and a translation portion of the translation driver 253 being connected to the rack 255. The rack 255 is driven to translate through the action of the translation part of the translation driver 253 so as to drive the gear 254 to rotate, and then the rotary swing rod 246 is driven to rotate; wherein the translation driver 253 adopts a translation driving cylinder; in addition, the rack 255 and the translation actuator 253 may be replaced by a motor and a pinion gear fixed to a shaft of the motor, the pinion gear is engaged with the gear 254 to drive the rotation of the rotary swing link 246, and the translation actuating cylinder is connected to and controlled by the PLC controller through an air pump.

Preferably, a positioning frame 257 and a backup block 256 are fixed to the mounting plate 251, the backup block is attached to the rack 255, and the other end of the rotating shaft 249 is rotatably mounted to the positioning frame through a bearing.

In this embodiment, a second horizontal translation driving mechanism 216 is further included, and the mounting plate 251 is fixed to the second horizontal translation driving mechanism 216. The second horizontal translation driving mechanism 216 comprises a frame body 214 fixed on the adjusting plate 219, a horizontal linear slide rail 217 fixed on the frame body 214 and a horizontal pushing cylinder 252, a slide plate 218 is fixed on a slide block of the horizontal linear slide rail 217, the mounting plate 251 is fixed on the slide plate 218, a piston rod of the horizontal pushing cylinder 252 is fixedly connected with the slide plate 218, the reciprocating translation of the bag opening claw 215 is driven by the telescopic action of the piston rod of the horizontal pushing cylinder 252, so that the bag opening is conveyed to the bag sleeving sleeve 224 to be closed, the bag is sleeved on the bag sleeving sleeve 224, and the horizontal pushing cylinder 252 is connected with the PLC through an air pump and is controlled by the PLC.

In this embodiment, the stacking device further comprises an adjusting plate 219, a workbench 200, a horizontal linear guide 217 fixed on the workbench 200, and an adjusting frame 258, wherein a threaded hole is formed in the adjusting frame 258, an adjusting screw 259 is in threaded connection with the threaded hole, the adjusting plate 219 is fixed on a slider of the horizontal linear guide 217, the adjusting frame 258 is located at the side of the end portion of the horizontal linear guide 217, the adjusting screw 259 is fixedly connected with the adjusting plate 219, and the stacking frame 201, the second horizontal translation driving mechanism 216, and the first horizontal translation driving mechanism 212 are all mounted on the adjusting plate 219; which drives translational adjustment of the adjustment plate 219 by rotation of the adjustment screw 259 to align the pouches with their mouths open with the bagging collet 224, thereby facilitating automatic bagging operations.

Example 2:

the packaging bag bagging device described in this embodiment includes an indexing rotation mechanism 222, a plurality of bagging sleeves 224 arranged in an annular array, a storage tray 241, and a spreader as described above, where the indexing rotation mechanism 222 includes a rotation disc 223, an indexing rotation driver 264, and a rotation disc 223 mounted on the indexing rotation driver 264, the rotation disc 223 is provided with a plurality of discharge ports 265 arranged in an annular array, the plurality of bagging sleeves 224 are respectively disposed at the discharge ports 265 on the rotation disc 223 correspondingly, a bag mouth spreading claw 215 of the spreader device is disposed correspondingly to one bagging sleeve 224 on the rotation disc 223, the storage tray 241 is located behind one discharge port 265, the storage tray 241 includes a storage space 2411, the storage 241space 1 corresponds to one discharge port 265, a material pushing mechanism is disposed behind the discharge tray for pushing workpieces in the storage space 2411 and entering the packaging bag through the discharge port 265 and the bagging sleeves 224, the pusher mechanism includes a pusher block 267 that mates with the magazine space and a pusher drive mechanism 266 that drives the pusher block 267 in translation. After the opening of the bag opening and the bag sleeving of the packaging bag are completed in embodiment 1, the rotating disc 223 is driven to rotate, so that the positioned packaging bag is conveyed to a position corresponding to the material storage space 2411 in a rotating mode, at the moment, the material pushing driving mechanism 266 drives the material pushing block 267 to translate, workpieces in the material storage space 2411 are pushed and enter the packaging bag through the material outlet 265 and the bag sleeving sleeve 224, the automatic bag opening, bag sleeving and workpiece product bagging operation is completed, the working efficiency is improved, and the cost is reduced.

Preferably, an installation frame 227 is arranged above the storage space 2411, a lifting driver 234 is arranged on the installation frame 227, a lifting part of the lifting driver 234 is provided with a vibration mechanism 240, and the vibration mechanism 240 is arranged corresponding to the storage space; the vibration mechanism 240 comprises an upper plate 235, a lower plate 236, a spring 236 and a vibrator 237, wherein the lower plate is fixedly connected with a plurality of connecting rods 238, the upper ends of the connecting rods 238 are inserted into the guide holes of the upper plate 235 and are limited by connecting nuts, the spring is sleeved on the connecting rods, two ends of the spring are respectively butted with the upper plate and the lower plate, a lifting part of the lifting driver 234 is fixedly connected with the upper part, the vibrator is fixed on the lower plate, the lifting driver 234 also adopts a lifting driving cylinder, and the lifting driving cylinder is connected with and controlled by a PLC controller through an air pump; the vibrator is connected with and controlled by the PLC; the vibrator is conventional in the art and therefore will not be described in detail herein.

Preferably, the bagging sleeve 224 comprises two half shells symmetrically arranged with each other, one end of each of the two half shells is hinged to the two opposite side pins of the discharge port 265, the outer walls of the two half shells 2241 are respectively provided with a positioning plate 260, the two positioning plates 260 are both in threaded connection with an adjusting bolt 262 and are respectively connected with the rotating disc through a tension spring, the two opposite sides of each discharge port 265 on the rotating disc 223 are respectively provided with a through hole 231, the two through holes 231 are respectively arranged corresponding to the two adjusting bolts, the mounting frame 227 is provided with a push cylinder 228, the push cylinder 228 is located behind the upper end of the rotating disc 223, a piston rod of the push cylinder 228 is provided with a push block 229, the push block 229 is provided with two push rods 230, the two push rods 230 respectively penetrate through the two through holes 231 and abut against the rear ends of the adjusting bolts 262, and the two positioning plates 260 are connected with the rotating disc through the tension springs; the piston rod of the pushing cylinder pushes the adjusting bolt 262 through the two push rods 220 after extending out, so that the positioning plate 260 moves, the two half shells are relatively folded, at the moment, the packaging bag is sleeved on the two positioning plates 260 through the half shells, then the piston rod of the pushing cylinder retracts, and under the action of the tension spring, the two positioning plates 260 move outwards to fully open the packaging bag. The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.

Claims

1. The packaging bag opening device is characterized by comprising a stacking frame (201) stacked with packaging bags, a bag taking mechanism (210) located beside the side face of the packaging bags and a bag opening paw (215) located beside the bag opening of the packaging bags correspondingly;

the bag taking mechanism (210) comprises a vertical lifting driving mechanism (206), and a bag taking structure (207) for grabbing the packaging bag is installed on a lifting part of the vertical lifting driving mechanism (206);

the bag mouth opening paw (215) comprises an upper opening plate (214), a lower opening plate (213) and a paw driving mechanism for driving at least one of the upper opening plate (214) and the lower opening plate (213) to move up and down, wherein a first vacuum sucker (242) is arranged on the lower side wall of the upper opening plate (214), and a second vacuum sucker (243) is arranged on the upper side wall of the lower opening plate (213).

2. The bag opener according to claim 1, wherein the bag retrieving mechanism (210) further comprises a first horizontal translation driving mechanism (212), and the vertical lift driving mechanism (206) is fixed to a translation portion of the first horizontal translation driving mechanism (212).

3. The bag opener according to claim 2, wherein the bag taking mechanism (207) comprises a plate body (208) and at least one third vacuum cup (209), the third vacuum cup (209) being mounted on the plate body (208), the plate body (208) being fixed to the elevating portion of the vertical elevating driving mechanism (206).

4. The packaging bag opening device according to claim 3, wherein the stacking frame (201) comprises a bag taking opening (202), the bag taking structure (207) is positioned below the bag taking opening (202), the packaging bag limiting structure (203) is arranged on the stacking frame (201) and positioned on the periphery of the bag taking opening (202), the packaging bag limiting structure (203) comprises baffle rods (205) arranged on the left side and the right side of the bag taking opening (202) and baffles (204) arranged on the front side and the rear side of the bag taking opening (202), or the packaging bag limiting structure (203) comprises baffles (204) arranged on the left side and the right side of the bag taking opening (202) and baffle rods (205) arranged on the front side and the rear side of the bag taking opening (202); the lower end of the baffle (204) is provided with a supporting plate (263), and the supporting plate (263) is arranged in the bag taking opening (202).

5. The packaging bag opening device according to claim 3, wherein the paw driving mechanism comprises a mounting plate (251), a first vertical sliding rail (244), a second vertical sliding rail (245), a rotary swing link (246) and a rotary driving mechanism (250) for driving the rotary swing link (246) to rotate, the first vertical sliding rail (244) and the second vertical sliding rail (245) are arranged in parallel, a sliding block of the first vertical sliding rail (244) and a sliding block of the second vertical sliding rail (245) are both fixed on the mounting plate (251), a height difference exists between the lower end of the first vertical sliding rail (244) and the lower end of the second vertical sliding rail (245), the two ends of the rotary swing link (246) are provided with elongated holes (247), the two elongated holes (247) are inserted with connecting bolts (248), the two connecting bolts (248) are respectively connected with the guide rail of the first vertical sliding rail (244) and the guide rail of the second vertical sliding rail (245), the rotary driving mechanism (250) is connected with the middle part of the rotary swing rod (246), the upper expanding plate (214) is fixed at the lower end part of the first vertical sliding rail (244), and the lower expanding plate (213) is fixed at the lower end part of the second vertical sliding rail (245).

6. The apparatus as claimed in claim 5, wherein the rotation driving mechanism (250) comprises a gear (254), a rack (255), a rotation shaft (249) and a translation driver (253), the rotation shaft (249) is rotatably mounted on the mounting plate (251), one end of the rotation shaft (249) is connected to a middle portion of the rotary swing link (246), the gear (254) is sleeved on the other end of the rotation shaft (249), the gear (254) and the rack (255) are engaged with each other, the translation driver (253) is fixed on the mounting plate (251), and a translation portion of the translation driver (253) is connected to the rack (255).

7. The bag spreader device of claim 6, further comprising a second horizontal translation drive mechanism (216), wherein the mounting plate (251) is secured to the second horizontal translation drive mechanism (216).

8. The packaging bag opening device according to claim 7, further comprising an adjusting plate (219), a workbench (200), a horizontal linear guide (217) fixed on the workbench (200) and an adjusting frame (258), wherein a threaded hole is formed in the adjusting frame (258), an adjusting screw (259) is in threaded connection with the threaded hole, the adjusting plate (219) is fixed on a sliding block of the horizontal linear guide (217), the adjusting frame (258) is located on the side of the end portion of the horizontal linear guide (217), the adjusting screw (259) is fixedly connected with the adjusting plate (219), and the stacking frame (201), the second horizontal translation driving mechanism (216) and the first horizontal translation driving mechanism (212) are all installed on the adjusting plate (219).

9. A packaging bag bagging device, which is characterized by comprising an indexing type rotating mechanism (222), a plurality of bagging sleeves (224) arranged in an annular array, a storage disc (241) and the expanding device of any one of claims 1 to 8, wherein the indexing type rotating mechanism (222) comprises a rotating disc (223), an indexing type rotating driver (264) and the rotating disc (223) arranged on the indexing type rotating driver (264), a plurality of discharge ports (265) arranged in an annular array are formed in the rotating disc (223), the plurality of bagging sleeves (224) are respectively correspondingly arranged at the discharge ports (265) on the rotating disc (223), an expanding opening claw (215) of the expanding device is correspondingly arranged with one bagging sleeve (224) on the rotating disc (223), the storage disc (241) is positioned behind one discharge port (265), the storage disc (241) comprises a storage space (2411), the material storage space (2411) corresponds to a material outlet (265), a material pushing mechanism which pushes the workpieces in the material storage space (2411) and enters the packaging bag through the material outlet (265) and the bag sleeving sleeve (224) is arranged behind the material outlet disc, and the material pushing mechanism comprises a material pushing block (267) matched with the material storage space and a material pushing driving mechanism (266) which drives the material pushing block (267) to translate.

10. The packaging bag bagging device according to claim 9, wherein a mounting frame (227) is arranged above the storage space (2411), a lifting driver (234) is arranged on the mounting frame (227), a lifting part of the lifting driver (234) is provided with a vibration mechanism (240), and the vibration mechanism (240) is arranged corresponding to the storage space; the bagging sleeve (224) comprises two half shells (2241) which are symmetrically arranged, one end of each half shell is hinged to the two opposite sides of the discharge hole (265), the outer walls of the two half shells are respectively provided with a positioning plate (260), the two positioning plates (260) are in threaded connection with adjusting bolts (262) and are respectively connected with the rotating disc through tension springs, the two opposite sides of each discharge hole (265) on the rotating disc (223) are respectively provided with a through hole (231), the two through holes (231) are respectively arranged corresponding to the two adjusting bolts, the mounting frame (227) is provided with a push cylinder (228), the push cylinder (228) is positioned behind the upper end of the rotating disc (223), a push block (229) is arranged on a piston rod of the push cylinder (228), the push block (229) is provided with two push rods (230), and the two push rods (230) respectively penetrate through the two through holes (231) and are abutted against the rear ends of the adjusting bolts (262), the two positioning plates (260) are connected with the rotating disc through tension springs.