Kraft paper bag taking and opening device

Abstract

The utility model discloses a kraft paper bag taking and opening device which comprises a first conveying belt, a second conveying belt and a base frame, a fixing plate and an extending plate are arranged on the first conveying belt, a first air cylinder is arranged at the top end of the fixing plate, a push plate is arranged on the first air cylinder, and a supporting enclosure frame and a sliding rail are arranged at the top end of the base frame. A first sliding groove is formed in the supporting enclosure frame, an overturning assembly and a placing assembly are arranged in the supporting enclosure frame, a second air cylinder is arranged at the top end of the base frame, a sliding base is arranged on the second air cylinder, a supporting plate is arranged at the top end of the sliding base, a second sliding groove is formed in the supporting plate, and a hinge assembly is arranged on the supporting plate. A bag opening assembly is arranged between the supporting plates. Compared with the prior art, the kraft paper bag taking and opening device is simple in structure, bag taking, bag opening and bagging work can be automatically completed, manual filling is replaced, the working efficiency is improved, the labor cost is saved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a device for taking and opening kraft paper bags. Background Art

[0002] Kraft paper is mainly used as packaging material, which has the characteristics of very high strength. It is usually tawny, while semi-bleached or fully bleached kraft pulp is light brown, cream-colored or white, with a basis weight of 80 - 120 g / m2, and the breaking length is generally above 6000 m, and the tear resistance, bursting work and dynamic strength are very high. Due to the characteristics of kraft paper bags made of kraft paper, most documents that need to be sealed for a long time are currently packaged in kraft paper bags, such as examination papers, archives, test exercises, etc.

[0003] However, the existing packaging methods currently all manually take and open the packaging bags, and then manually put the items to be packaged into the bags. This packaging method not only has low work efficiency, greatly increasing the labor of the staff, but also due to the characteristics of kraft paper itself, it is very difficult for traditional bagging equipment to complete a series of processes such as taking bags, opening bags, and filling. Therefore, we propose a device for taking and opening kraft paper bags. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a device for taking and opening kraft paper bags, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a device for taking and opening kraft paper bags, including a first conveyor belt, a second conveyor belt and a base frame. One side of the first conveyor belt is fixedly connected with a fixing plate, the top of the fixing plate is fixedly installed with a first cylinder, the output end of the first cylinder is fixedly connected with a pushing plate. The other side of the first conveyor belt is fixedly connected with an extension plate. One side of the top of the base frame is fixedly connected with a support enclosure. One side inside the support enclosure is provided with a first chute. A flipping component is arranged inside the support enclosure. One side of the upper end of the support enclosure is fixedly connected with a placing component. The other side of the top of the base frame is fixedly installed with a slide rail. The side of the top of the base frame far from the slide rail is fixedly installed with a second cylinder. The output end of the second cylinder is fixedly connected with a sliding base. Two support plates are symmetrically and fixedly connected to the top of the sliding base. Second chutes are opened at the upper ends of the two support plates. A hinged component is arranged on one of the support plates. An opening component is arranged between the two support plates.

[0006] As a further description of the above technical solution, the top of the extension plate and the conveying surface of the first conveyor belt are on the same horizontal plane. The support enclosure is a U-shaped enclosure structure. The sliding base is slidably connected with the slide rail.

[0007] As a further description of the above technical solution, the flipping assembly includes a third cylinder and a moving plate. One side of the moving plate is fixedly connected with a slider, and the other side of the moving plate is fixedly connected with a connecting plate. One upper end of the moving plate is fixedly connected with a vertical plate, and one lower end of the moving plate is hinged with a fourth cylinder. The output end of the fourth cylinder is hinged with a flipping plate. A plurality of first suction cups are symmetrically and fixedly installed at the top end of the flipping plate, and a rotating shaft is fixedly connected to one side of the flipping plate.

[0008] As a further description of the above technical solution, the output end of the third cylinder is fixedly connected with the connecting plate. The slider is slidably connected with the first chute, and the rotating shaft is rotatably connected with the vertical plate.

[0009] As a further description of the above technical solution, the placing assembly includes a mounting plate. A first sliding rod is fixedly installed on the mounting plate. Two first enclosing plates are slidably connected to the first sliding rod. Through grooves are formed in the two first enclosing plates. A second enclosing plate is fixedly installed on one side of the two first enclosing plates through fastening bolts passing through the through grooves. One bottom end side of the first enclosing plates is fixedly connected with a first support plate, and one bottom end side of the second enclosing plates is fixedly connected with a second support plate.

[0010] As a further description of the above technical solution, the mounting plate is fixedly installed at one upper end side of the supporting enclosure frame. The first support plate and the second support plate are distributed above the vertical plate.

[0011] As a further description of the above technical solution, the hinging assembly includes a fifth cylinder. The output end of the fifth cylinder is hinged with a hinging plate, and one end of the hinging plate away from the fifth cylinder is hinged with a hinging rod.

[0012] As a further description of the above technical solution, the fifth cylinder is hinged at one lower end side of one of the supporting plates, and the hinging plate is rotatably connected with one of the supporting plates.

[0013] As a further description of the above technical solution, the bag opening assembly includes two fixed rods and two connecting blocks. A moving plate is slidably connected between the two fixed rods. A sixth cylinder is fixedly installed on the moving plate. The output end of the sixth cylinder is fixedly connected with a spherical block. A seventh cylinder is fixedly connected to the side wall of the sixth cylinder. A second sliding rod is fixedly connected between the two connecting blocks. Two sliding members are slidably connected to the second sliding rod. Two third sliding rods are symmetrically and fixedly connected to the bottom ends of the two sliding members. An eighth cylinder is arranged between the two third sliding rods. The output end of the eighth cylinder is fixedly connected with a fixed block. A plurality of second suction cups are fixedly installed on one side of the fixed block. One side of the two sliding members is hinged with a connecting rod, and the output end of the seventh cylinder is fixedly connected with a hinge seat.

[0014] As a further description of the above technical solution, the two fixed rods are respectively fixedly connected to the tops of the two support plates. The articulated rod is articulated with one of the connecting blocks. Both of the sliding members are slidably connected to the moving plate. The two ends of the second sliding rod are respectively slidably connected to the two second sliding grooves and pass through the two second sliding grooves to be fixedly connected to the two connecting blocks. Both of the third sliding rods are slidably connected to the fixed block. The eighth cylinder is fixedly installed at the bottom end of the sliding member. Both of the connecting rods are articulated with the articulated seat.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] By arranging the support frame, the first sliding groove and the flipping assembly in cooperation, the bag-taking work can be completed. By arranging the slide rail, the second cylinder, the sliding base, the support plate, the second sliding groove, the articulated assembly and the bag-opening assembly in cooperation, the bag-opening work can be carried out. By arranging the first conveyor belt, the second conveyor belt, the first cylinder, the pushing plate and the extension plate in cooperation, the bag-loading work can be carried out, so that the device has a simple and compact structure, can automatically complete the bag-taking, bag-opening and bag-loading work, replaces the previous manual loading method, improves the work efficiency, saves labor costs, reduces the labor intensity of the staff, and improves the quality of the loaded products. Description of the Drawings

[0017] Figure 1 Fig. 1 is an overall structural schematic diagram of a kraft paper bag bag-taking and bag-opening device of the utility model from a first perspective;

[0018] Figure 2 Fig. 2 is an overall structural schematic diagram of a kraft paper bag bag-taking and bag-opening device of the utility model from a second perspective;

[0019] Figure 3 Fig. 3 is a structural schematic diagram of the flipping assembly of a kraft paper bag bag-taking and bag-opening device of the utility model;

[0020] Figure 4 Fig. 4 is a structural schematic diagram of the placing assembly of a kraft paper bag bag-taking and bag-opening device of the utility model;

[0021] Figure 5 Fig. 5 is a structural schematic diagram of the articulated assembly of a kraft paper bag bag-taking and bag-opening device of the utility model;

[0022] Figure 6 Fig. 6 is a structural schematic diagram of the bag-opening assembly of a kraft paper bag bag-taking and bag-opening device of the utility model.

[0023] In the figure: 1. First conveyor belt; 2. Second conveyor belt; 3. Base frame; 4. First cylinder; 5. Pusher plate; 6. Extension plate; 7. Support enclosure; 8. First chute; 9. Flipping assembly; 10. Placing assembly; 11. Slide rail; 12. Second cylinder; 13. Sliding base; 14. Support plate; 15. Second chute; 16. Hinge assembly; 17. Bag-opening assembly; 18. Fixed plate; 91. Third cylinder; 92. Moving plate; 93. Connecting plate; 94. Vertical plate; 95. Fourth cylinder; 96. Flipping plate; 97. First suction cup; 98. Rotating shaft; 99. Slide block; 101. Mounting plate; 102. First slide bar; 103. First enclosure; 104. Through slot; 105. Second enclosure; 106. First support plate; 107. Second support plate; 161. Fifth cylinder; 162. Hinge plate; 163. Hinge rod; 171. Fixed rod; 172. Connecting block; 173. Moving plate; 174. Sixth cylinder; 175. Spherical block; 176. Seventh cylinder; 177. Second slide bar; 178. Sliding member; 179. Third slide bar; 180. Eighth cylinder; 181. Fixed block; 182. Second suction cup; 183. Connecting rod; 184. Hinge seat. Detailed implementation manners

[0024] To make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] Please refer to Figure 1-6, the present utility model provides a technical solution: a bag-taking and bag-opening device for kraft paper bags, including a first conveyor belt 1, a second conveyor belt 2 and a base frame 3. Both the first conveyor belt 1 and the second conveyor belt 2 are step conveyor belts, which are prior arts. Their specific structures and principles will not be elaborated here. One side of the first conveyor belt 1 is fixedly connected with a fixed plate 18. At the top of the fixed plate 18, a first cylinder 4 is fixedly installed. The output end of the first cylinder 4 is fixedly connected with a push plate 5. The other side of the first conveyor belt 1 is fixedly connected with an extension plate 6. The top of the extension plate 6 is on the same horizontal plane as the conveying surface of the first conveyor belt 1. One side of the top of the base frame 3 is fixedly connected with a support enclosure 7. The support enclosure 7 is a U-shaped enclosure structure. A first chute 8 is provided on one side inside the support enclosure 7. A flipping assembly 9 is arranged inside the support enclosure 7. The flipping assembly 9 includes a third cylinder 91 and a moving plate 92. The third cylinder 91 is fixedly installed on one side inside the support enclosure 7. One side of the moving plate 92 is fixedly connected with a slider 99. The slider 99 is slidably connected with the first chute 8. The other side of the moving plate 92 is fixedly connected with a connecting plate 93. The output end of the third cylinder 91 is fixedly connected with the connecting plate 93. One side upper end of the moving plate 92 is fixedly connected with a vertical plate 94. One side of the vertical plate 94 is rotatably connected with a rotating shaft 98. A flipping plate 96 is fixedly connected to the rotating shaft 98. One side lower end of the moving plate 92 is hinged with a fourth cylinder 95. The output end of the fourth cylinder 95 is hinged with the flipping plate 96. A plurality of first suction cups 97 are symmetrically fixedly installed at the top of the flipping plate 96.

[0028] One upper end of one side of the support frame 7 is fixedly connected with a placing assembly 10 for placing kraft paper bags. The placing assembly 10 includes a mounting plate 101 fixedly installed at the upper end of one side of the support frame 7. A first sliding rod 102 is fixedly installed on the mounting plate 101. Two first enclosing plates 103 are slidably connected to the first sliding rod 102. There is a static friction fit between the first enclosing plates 103 and the first sliding rod 102, that is, an external force needs to be applied to the first enclosing plates 103 to slide on the first sliding rod 102. Through grooves 104 are formed in both of the two first enclosing plates 103. A second enclosing plate 105 is fixedly installed on one side of both of the two first enclosing plates 103 through fastening bolts passing through the through grooves 104. One side of the bottom end of each of the first enclosing plates 103 is fixedly connected with a first support plate 106, and one side of the bottom end of each of the second enclosing plates 105 is fixedly connected with a second support plate 107. The first support plates 106 and the second support plates 107 are distributed above the vertical plate 94. The first support plates 106 cooperate with the second support plates 107 to support and place the kraft paper bags, and only the edges of the kraft paper bags need to be supported to prevent the kraft paper bags from falling. The distance between the two first enclosing plates 103 can be changed by moving the two first enclosing plates 103 to adapt to kraft paper bags of different lengths. The position of the second enclosing plate 105 can be changed by loosening the fastening bolts and changing the positions of the fastening bolts in the through grooves 104, so as to adapt to kraft paper bags of different widths. In this way, the placing assembly 10 can be made to adapt to kraft paper bags of different specifications. It should be noted here that the kraft paper bags placed in the placing assembly 10 are in a flat and closed state and are stacked in the placing assembly 10.

[0029] On the other side of the top end of the base frame 3, a slide rail 11 is fixedly installed. On the side of the top end of the base frame 3 far from the slide rail 11, a second cylinder 12 is fixedly installed. The output end of the second cylinder 12 is fixedly connected with a sliding base 13. The sliding base 13 is slidably connected to the slide rail 11. Two support plates 14 are symmetrically and fixedly connected to the top end of the sliding base 13. Second sliding grooves 15 are formed in the upper ends of both of the two support plates 14. A hinged assembly 16 is arranged on one of the support plates 14. The hinged assembly 16 includes a fifth cylinder 161 hinged at the lower end of one side of one of the support plates 14. The output end of the fifth cylinder 161 is hinged with a hinged plate 162. The hinged plate 162 is rotatably connected to one of the support plates 14. One end of the hinged plate 162 far from the fifth cylinder 161 is hinged with a hinged rod 163.

[0030] An open-bag assembly 17 is arranged between two support plates 14. The open-bag assembly 17 includes two fixed rods 171 and two connecting blocks 172. The two fixed rods 171 are respectively fixedly connected to the tops of the two support plates 14. One of the connecting blocks 172 is hinged to the hinge rod 163. A moving plate 173 is slidably connected between the two fixed rods 171. A sixth cylinder 174 is fixedly installed on the moving plate 173. The output end of the sixth cylinder 174 faces vertically downward and is fixedly connected to a spherical block 175. The side wall of the sixth cylinder 174 is fixedly connected to a seventh cylinder 176. The output end of the seventh cylinder 176 faces vertically downward. A second sliding rod 177 is fixedly connected between the two connecting blocks 172. Both sliding members 178 are slidably connected to the moving plate 173. The two ends of the second sliding rod 177 are respectively slidably connected to the two second sliding grooves 15 and pass through the two second sliding grooves 15 to be fixedly connected to the two connecting blocks 172. Two sliding members 178 are slidably connected to the second sliding rod 177. Symmetrically fixed to the bottom ends of both sliding members 178 are two third sliding rods 179. An eighth cylinder 180 is arranged between the two third sliding rods 179. The eighth cylinder 180 is fixedly installed at the bottom end of the sliding member 178. The output end of the eighth cylinder 180 is fixedly connected to a fixed block 181. Both third sliding rods 179 are slidably connected to the fixed block 181. A plurality of second suction cups 182 are fixedly installed on one side of each fixed block 181, and the second suction cups 182 on the two fixed blocks 181 are mirror-image distributed. One side of each of the two sliding members 178 is hinged to a connecting rod 183. The output end of the seventh cylinder 176 is fixedly connected to a hinge seat 184. Both connecting rods 183 are hinged to the hinge seat 184.

[0031] It should be noted that the present utility model is a device for taking and opening kraft paper bags. First, the placement component 10 is adjusted according to the size of the kraft paper bag to fit the kraft paper bag. That is, an external force is applied to the two first enclosing plates 103 to move them on the first sliding rod 102 to change the distance between the two first enclosing plates 103 to fit kraft paper bags of different lengths. By loosening the fastening bolts, the position of the fastening bolts in the through slots 104 is changed to change the position of the second enclosing plate 105, and then the fastening bolts are tightened to fix the second enclosing plate 105, so as to fit kraft paper bags of different widths. In this way, the placement component 10 can be made to fit kraft paper bags of different specifications. After adjusting the placement component 10, several flat and closed kraft paper bags are stacked between the top ends of the first support plate 106 and the second support plate 107. Then, the lowermost kraft paper bag in the placement component 10 is sucked by the first suction cup 97. Next, the fourth cylinder 95 is controlled to contract. Since the turning plate 96 is hinged to the output end of the fourth cylinder 95, the rotating shaft 98 is rotatably connected to the vertical plate 94, and the fourth cylinder 95 is hinged to the moving plate 92, when the fourth cylinder 95 contracts, it will drive the turning plate 96 to turn downward, and the turning angle is 90 degrees. At this time, the kraft paper bag adsorbed by the first suction cup 97 changes from a horizontal state to a vertical state, and the opening end is located above. Then, the third cylinder 91 is controlled to extend, and the moving plate 92 is driven to move in the direction of the bag opening component in cooperation with the sliding connection between the slider 99 and the first chute 8. Then, the second cylinder 12 is controlled to contract, and the sliding base 13 and the components thereon can be driven to move in the direction of the vertically placed kraft paper bag in cooperation with the sliding connection between the sliding base 13 and the slide rail 11. When the kraft paper bag is exactly between the two support plates 14, the second cylinder 12 stops contracting. Then, the eighth cylinder 180 is controlled to operate to drive the fixed block 181 to move in the vertical direction until the kraft paper bag is between the two fixed blocks 181. Due to the hinge relationship between the hinge seat 184 and the two connecting rods 183, the hinge relationship between the connecting rod 183 and the sliding member 178, and the sliding connection relationship between the sliding member 178 and the second sliding rod 177, based on Figure 6On the basis of this, when the seventh cylinder 176 contracts, the two sliding members 178 will approach each other on the second sliding rod 177, thereby driving the two fixed blocks 181 to approach the kraft paper bag until the second suction cup 182 on the fixed block 181 can adsorb the kraft paper bag. After adsorption, the first suction cup 97 will cancel the adsorption of the kraft paper bag; when the seventh cylinder 176 extends, it will drive the two sliding members 178 to move away from each other on the second sliding rod 177, thereby opening the kraft paper bag. Finally, the sixth cylinder 174 extends to drive the spherical block 175 to extend into the bottom end inside the opened kraft paper bag, and the bottom end of the kraft paper bag is propped open by the spherical block 175, so that the bag opening work of the kraft paper bag can be completed. Here it should be noted that while the kraft paper bag is adsorbed by the second suction cup 182, the third cylinder 91 contracts to drive the moving plate 92 back to its original position, that is, to make the turning plate 96 return to directly below the placing assembly 10, and then control the fourth cylinder 95 to extend to rotate the turning plate 96 from the vertical state to the horizontal state to wait for the next bag-taking work. After the bag opening is completed, the second cylinder 12 extends to push the sliding base 13 in the direction of the second conveyor belt 2 and stops after reaching the end of the moving belt slide rail 11. Due to the hinge relationship between the fifth cylinder 161 and the hinge plate 162, the rotational connection relationship between the hinge plate 162 and the support plate 14, the hinge relationship between the hinge plate 162 and the hinge rod 163, the hinge relationship between the hinge rod 163 and the connecting block 172, and the sliding connection relationship between the fixed rod 171 and the second sliding rod 177, when the fifth cylinder 161 extends, it will drive the entire bag opening assembly 17 to move in the direction of the second conveyor belt 2 until the kraft paper bag adsorbed on the bag opening assembly 17 is exactly above the second rotating belt 2. At this time, the bag opening of the kraft paper bag is exactly below the end of the extension plate 6 away from the first conveyor belt 1. Subsequently, the items to be loaded are conveyed to the position corresponding to the push plate 5 through the first conveyor, the first cylinder 4 extends to drive the push plate 5 to push the items onto the extension plate 6, and finally into the kraft paper bag. Then, the second suction cup 182 cancels the adsorption of the kraft paper bag, causing the kraft paper bag to fall on the second conveyor belt 2 for conveyance, thereby completing the product loading work. Compared with the existing kraft paper bag bag-taking and bag-opening device, the utility model has a simple structure, can automatically complete the work of bag-taking, bag-opening and bag-loading, replaces manual loading, improves work efficiency, saves labor costs, and reduces the labor intensity of workers.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A kraft paper bag taking and opening device, comprising a first conveyor belt (1), a second conveyor belt (2) and a base frame (3), characterized in that, On one side of the first conveyor belt (1), there is a fixed connection with a fixed plate (18). At the top of the fixed plate (18), a first cylinder (4) is fixedly installed. The output end of the first cylinder (4) is fixedly connected with a push plate (5). On the other side of the first conveyor belt (1), there is a fixed connection with an extension plate (6). On one side of the top of the base frame (3), there is a fixed connection with a support enclosure (7). Inside one side of the support enclosure (7), there is a first chute (8) opened. Inside the support enclosure (7), there is a flipping assembly (9) arranged. At the upper end of one side of the support enclosure (7), there is a fixed connection with a placement assembly (10). On the other side of the top of the base frame (3), a slide rail (11) is fixedly installed. On the side of the top of the base frame (3) far from the slide rail (11), a second cylinder (12) is fixedly installed. The output end of the second cylinder (12) is fixedly connected with a sliding base (13). On the top of the sliding base (13), two support plates (14) are symmetrically and fixedly connected. On the upper ends of the two support plates (14), second chutes (15) are opened. On one of the support plates (14), a hinged assembly (16) is arranged. Between the two support plates (14), a bag-opening assembly (17) is arranged.

2. The bag-taking and bag-opening device for kraft paper bags according to claim 1, wherein The top of the extension plate (6) is on the same horizontal plane as the conveying surface of the first conveyor belt (1). The support enclosure (7) is of a U-shaped enclosure structure. The sliding base (13) is slidably connected with the slide rail (11).

3. The bag-taking and bag-opening device for kraft paper bags according to claim 1, wherein The flipping assembly (9) includes a third cylinder (91) and a moving plate (92). On one side of the moving plate (92), there is a fixed connection with a slider (99). On the other side of the moving plate (92), there is a fixed connection with a connecting plate (93). At the upper end of one side of the moving plate (92), there is a fixed connection with a vertical plate (94). At the lower end of one side of the moving plate (92), a fourth cylinder (95) is hinged. The output end of the fourth cylinder (95) is hinged with a flipping plate (96). At the top of the flipping plate (96), a plurality of first suction cups (97) are symmetrically and fixedly installed. On one side of the flipping plate (96), there is a fixed connection with a rotating shaft (98).

4. A kraft paper bag picking and opening device according to claim 3, characterized in that, The output end of the third cylinder (91) is fixedly connected with the connecting plate (93). The slider (99) is slidably connected with the first chute (8). The rotating shaft (98) is rotatably connected with the vertical plate (94).

5. The bag-taking and bag-opening device for kraft paper bags according to claim 3, wherein, The placement assembly (10) includes a mounting plate (101). On the mounting plate (101), a first sliding rod (102) is fixedly installed. On the first sliding rod (102), two first enclosing plates (103) are slidably connected. On the two first enclosing plates (103), through slots (104) are opened. On one side of the two first enclosing plates (103), a second enclosing plate (105) is fixedly installed by a fastening bolt passing through the through slot (104). On one side of the bottom end of the first enclosing plate (103), a first support plate (106) is fixedly connected. On one side of the bottom end of the second enclosing plate (105), a second support plate (107) is fixedly connected.

6. The bag-taking and bag-opening device for kraft paper bags according to claim 5, wherein The installation plate (101) is fixedly installed at the upper end of one side of the support frame (7), and the first support plate (106) and the second support plate (107) are distributed above the vertical plate (94).

7. A kraft paper bag picking and opening device according to claim 1, characterized in that, The hinge assembly (16) includes a fifth cylinder (161), the output end of the fifth cylinder (161) is hinged with a hinge plate (162), and one end of the hinge plate (162) away from the fifth cylinder (161) is hinged with a hinge rod (163).

8. A kraft paper bag picking and opening device according to claim 7, characterized in that, The fifth cylinder (161) is hinged at the lower end of one side of one of the support plates (14), and the hinge plate (162) is rotatably connected with one of the support plates (14).

9. The bag-taking and bag-opening device for kraft paper bags according to claim 7, characterized in that, The bag opening assembly (17) includes two fixed rods (171) and two connecting blocks (172). A moving plate (173) is slidably connected between the two fixed rods (171). A sixth cylinder (174) is fixedly installed on the moving plate (173). The output end of the sixth cylinder (174) is fixedly connected with a spherical block (175). The side wall of the sixth cylinder (174) is fixedly connected with a seventh cylinder (176). A second sliding rod (177) is fixedly connected between the two connecting blocks (172). Two sliding members (178) are slidably connected to the second sliding rod (177). At the bottom ends of the two sliding members (178), two third sliding rods (179) are symmetrically and fixedly connected. An eighth cylinder (180) is arranged between the two third sliding rods (179). The output end of the eighth cylinder (180) is fixedly connected with a fixed block (181). A plurality of second suction cups (182) are fixedly installed on one side of the fixed block (181). One end of each of the two sliding members (178) is hinged with a connecting rod (183). The output end of the seventh cylinder (176) is fixedly connected with a hinge seat (184).

10. A kraft paper bag picking and opening device according to claim 9, characterized in that, The two fixed rods (171) are respectively fixedly connected to the tops of the two support plates (14). The hinge rod (163) is hinged with one of the connecting blocks (172). The two sliding members (178) are both slidably connected to the moving plate (173). The two ends of the second sliding rod (177) are respectively slidably connected to the two second chutes (15) and pass through the two second chutes (15) to be fixedly connected with the two connecting blocks (172). The two third sliding rods (179) are both slidably connected to the fixed block (181). The eighth cylinder (180) is fixedly installed at the bottom end of the sliding member (178). The two connecting rods (183) are both hinged with the hinge seat (184).

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