Bottom card placement mechanism and paper bag processing equipment

Abstract

This utility model discloses a bottom card placement mechanism and a paper bag processing equipment. The bottom card placement mechanism includes: a body, a support base, a first suction and release component, a second suction and release component, and a flexible drive mechanism. The support base has vertically arranged flip guide grooves on two symmetrical sides. The first suction and release component is located on one side of the support base. The second suction and release component is symmetrically located on the other side of the support base. The first and second suction and release components are used to move up and down alternately along each of the flip guide grooves and are guided and flipped by each of the flip guide grooves during movement. The flexible drive mechanism is connected to the first and second suction and release components for transmission. This utility model avoids noise generated by mechanical collisions, reduces overall operating noise, reduces the bottom card placement action time, and improves the bottom card placement efficiency. The orientation of the suction nozzle of the suction and release component is achieved by the guidance of the flip guide rail, which facilitates the picking and placing of the bottom card.

Description

Technical Field

[0001] This utility model relates to the field of automated processing technology, specifically to a bottom card placement mechanism and paper bag processing equipment. Background Technology

[0002] In the paper bag production process, the bottom card placement mechanism is one of the key steps in achieving paper bag forming, and its performance directly affects the production efficiency and quality of the paper bags. With increasing environmental protection requirements and the pursuit of production efficiency, noise reduction and efficiency improvement have become important research directions in the field of paper bag production technology. In related technologies, the main measures taken to achieve rapid placement of the bottom card include using pneumatic systems and mechanical transmission systems. For example, rapid bottom card placement can be achieved through cylinder or lead screw drive. However, the disadvantages of both are that they generate mechanical collisions, resulting in relatively high overall operating noise, especially due to the long air pressure build-up time and lead screw action time, making it difficult to improve the bottom card placement efficiency. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a bottom card placement mechanism, comprising:

[0004] Organism;

[0005] The support base has vertically oriented flip guide grooves on its two symmetrical sides.

[0006] The first suction and release assembly is provided with a suction nozzle for adsorbing the bottom card, and the first suction and release assembly is located on one side of the support base;

[0007] The second suction and release assembly is provided with a suction nozzle for adsorbing the bottom card. The second suction and release assembly is located on the other side of the support base. The first suction and release assembly and the second suction and release assembly are used to move up and down alternately along each of the flip guide grooves, and are guided and flipped by each of the flip guide grooves during movement to realize the change of the suction nozzle direction.

[0008] A flexible drive mechanism is connected to the first suction and discharge assembly and the second suction and discharge assembly in a transmission manner.

[0009] Preferably, the flipping guide groove includes a turning groove and a straight groove. The straight groove is connected to both ends of the turning groove and is arranged vertically. The turning groove includes two connected inclined grooves, and the other ends of the two inclined grooves are respectively connected to a straight groove. Each inclined groove and the straight groove form an angle greater than 90° and less than 180°.

[0010] Preferably, both the first suction and discharge assembly and the second suction and discharge assembly include:

[0011] A guide member, which is movably disposed within the flip guide groove;

[0012] A rocker arm, one end of which is pivotally connected to the guide member;

[0013] A flip shaft, the first end of which is fixedly connected to the other end of the rocker arm, and a suction nozzle is disposed at the second end of the flip shaft, and the suction nozzle is provided with a suction cup;

[0014] A connecting plate, wherein the first end of the flipping shaft rotatably passes through one end of the connecting plate, and the other end of the connecting plate is connected to the flexible drive mechanism.

[0015] Preferably, the flipping shaft includes:

[0016] A rotating section, one end of which rotatably passes through the connecting plate and is fixedly connected to the rocker arm;

[0017] A planar segment is connected to the other end of the rotating segment, and the suction cup is disposed on the planar segment.

[0018] Preferably, the support base is further provided with slide rails extending vertically on both symmetrical sides. The slide rails are connected to the connecting plate through sliders so that the connecting plate can move along the length of the slide rails.

[0019] Preferably, the flexible drive mechanism includes:

[0020] An electric motor is located at the bottom of the machine body;

[0021] A first rotating shaft is rotatably disposed at the bottom of the machine body and is connected to the motor for transmission.

[0022] The second rotating shaft is rotatably mounted on the support base and is arranged parallel to the first rotating shaft in the axial direction.

[0023] A first transmission belt, the two ends of which are synchronously connected to one end of the first rotating shaft and one end of the second rotating shaft;

[0024] The second transmission belt has its two ends synchronously connected to the other ends of the first rotating shaft and the second rotating shaft.

[0025] Preferably, both ends of the first rotating shaft and the second rotating shaft are provided with synchronous pulleys, and the first transmission belt and the second transmission belt synchronously pull the first rotating shaft and the second rotating shaft through the synchronous pulleys.

[0026] Preferably, the motor shaft of the motor is provided with a first gear, and one end of the first rotating shaft is provided with a second gear, and the first gear and the second gear mesh with each other.

[0027] Preferably, the connecting plate connected to the first transmission belt moves in the opposite direction to the connecting plate connected to the second transmission belt.

[0028] Another objective of this invention is to provide a paper bag processing device, including the bottom card placement mechanism as described above.

[0029] The above-described solution of this utility model has at least the following beneficial effects:

[0030] The bottom card placement mechanism provided by this utility model can be driven by a flexible drive mechanism to work alternately up and down on the first suction and release component and the second suction and release component, thereby avoiding noise generated by mechanical collision and reducing the overall operating noise. When placing the bottom card, the first suction and release component can adsorb the bottom card while the second suction and release component places the bottom card, or the first suction and release component can place the bottom card while the second suction and release component adsorbs the bottom card, and so on, thereby reducing the action time of bottom card adsorption and placement and improving the placement efficiency of the bottom card. The orientation of the suction nozzle of the suction and release component is controlled by the flip guide rail, which facilitates the picking and placing of the bottom card.

[0031] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the bottom card placement mechanism provided in the embodiments of this utility model;

[0034] Figure 2 This is a schematic diagram of the structure of the support base, suction and release assembly and flexible drive assembly provided in the embodiments of this utility model;

[0035] Figure 3 This is a schematic diagram of the suction and release assembly and the flexible drive assembly provided in the embodiments of this utility model;

[0036] Figure 4 This is a schematic diagram of the suction and discharge assembly provided in the embodiments of this utility model;

[0037] Figure 5 This is an example diagram of the working state of the suction and discharge assembly provided in this embodiment of the utility model;

[0038] Figure 6 This is an example diagram of another working state of the suction and discharge assembly provided in this embodiment of the utility model;

[0039] Explanation of icon numbers:

[0040] 10. Body; 20. Support base; 21. Tilting guide groove; 211. Turning groove; 212. Straight groove; 22. Side plate; 23. Top plate; 231. Material picking notch; 301. First suction and discharge assembly; 302. Second suction and discharge assembly; 31. Guide component; 32. Rocker arm; 33. Tilting shaft; 331. Rotating section; 332. Planar section; 34. Connecting plate; 35. Suction nozzle; 36. Slide rail; 37. Slider; 38. Air pipe connector; 40. Flexible drive mechanism; 41. Motor; 42. First rotating shaft; 43. Second rotating shaft; 44. First transmission belt; 45. Synchronous pulley; 46. First gear; 47. Second gear; 48. Second transmission belt; 50. Base clamp.

[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] The bottom card placement mechanism and paper bag processing equipment of this utility model embodiment are described in detail below with reference to the accompanying drawings.

[0048] Reference Figures 1 to 3 As shown, the bottom card placement mechanism provided by this utility model includes: a body 10, a support base 20, a first suction and release component 301, a second suction and release component 302, and a flexible drive mechanism 40. The support base 20 has vertically arranged flip guide grooves 21 on two symmetrical sides. The first suction and release component 301 is provided with a suction nozzle 35 for adsorbing the bottom card and is located on one side of the support base 20. The second suction and release component 302 is provided with a suction nozzle 35 for adsorbing the bottom card and is located on the other side of the support base 20. The first suction and release component 301 and the second suction and release component 302 are used to move up and down alternately along each flip guide groove 21 and are guided and flipped by each flip guide groove 21 during movement. The flexible drive mechanism 40 is connected to the first suction and release component 301 and the second suction and release component 302 to realize the change of the direction of the suction nozzle 35.

[0049] Specifically, the aforementioned support base 20 includes two side plates 22 and a top plate 23. The two side plates 22 are fixed to the body 10; the top plate 23 is located on top of the two side plates 22, and flip guide grooves 21 are respectively provided on the two side plates 22. The flip guide grooves 21 can be directly formed on the side plates 22 to provide support and guidance for the first suction and discharge assembly 301 and the second suction and discharge assembly 302.

[0050] Furthermore, the flipping guide groove 21 includes a turning groove 211 and a straight groove 212, with the straight groove 212 connecting both ends of the turning groove 211. Specifically, the straight groove 212 is vertically arranged, and the turning groove 211 includes two connected inclined grooves, with the other ends of the two inclined grooves respectively connected to the straight groove 212. Each inclined groove forms an angle greater than 90° and less than 180° with the straight groove 212. Preferably, the two inclined grooves also form an angle greater than 90° and less than 180°. The flipping guide grooves 21 on the two side plates 22 can be symmetrically arranged. The first suction and discharge assembly 301 and the second suction and discharge assembly 302 are independently guided by their respective flipping guide grooves 21, ensuring the independence and flexibility of the first suction and discharge assembly 301 and the second suction and discharge assembly 302 when driven to work, and ensuring the stability of their respective operation.

[0051] Reference Figures 3 to 6 As shown, both the first suction and discharge assembly 301 and the second suction and discharge assembly 302 include: a guide member 31, a rocker arm 32, a flipping shaft 33, and a connecting plate 34. The guide member 31 is movably disposed in the flipping guide groove 21; one end of the rocker arm 32 is pivotally connected to the guide member 31; the first end of the flipping shaft 33 is fixedly connected to the other end of the rocker arm 32; a suction nozzle 35 is disposed at the second end of the flipping shaft 33 and is provided with a suction cup; the first end of the flipping shaft 33 rotatably passes through one end of the connecting plate 34, and the other end of the connecting plate 34 is connected to the flexible drive mechanism 40.

[0052] In this embodiment, the connecting plate 34 and the flexible drive mechanism 40 are connected, so that when the flexible drive mechanism 40 drives the connecting plate 34 to move linearly upward, the flipping shaft 33 passing through the connecting plate 34 can move linearly upward along the radial direction of the connecting plate 34. Since the flipping shaft 33 and the rocker arm 32 are fixedly connected, the linear movement of the flipping shaft 33 can drive the rocker arm 32 to move upward, so that the guide member 31 can enter the turning groove 211 from the lower straight groove 212 along with the rocker arm 32. The guide member 31 is movable in the turning groove 211, so that the guide member 31 is moved by the turning groove 211. When the guide arm 32 is guided to the position of the straight groove 212 at the lower end, since the rocker arm 32 is fixedly connected to the flipping shaft 33, the rocker arm 32 will deflect with the guidance of the guide member 31. At the same time, the rocker arm 32 drives the flipping shaft 33 to rotate around its own axial direction. When the guide member 31 is driven to move from the turning groove 211 to the straight groove 212 at the upper end, the rocker arm 32 will continue to deflect with the guidance of the guide member 31 to be parallel to the straight groove 212, and simultaneously drive the flipping shaft 33 to continue to rotate to the position where the suction nozzle 35 faces upward, thereby completing the flipping action of the suction nozzle 35 from bottom to top.

[0053] Furthermore, after the suction nozzle 35 completes the operation of sucking up the bottom card 50, the connecting plate 34 drives the flipping shaft 33 to move downward in a straight line. At the same time, the flipping shaft 33 can drive the rocker arm 32 to move downward. At this time, the guide 31 is in the upper straight groove 212, so that the guide 31 can enter the turning groove 211 from the upper straight groove 212 with the rocker arm 32. When the guide 31 is guided by the turning groove 211 to a position that is deviated from the upper straight groove 212, the rocker arm 32 will continue to deflect with the guidance of the guide 31. At the same time, the rocker arm 32 continues to drive the flipping shaft 33 to rotate around its own axial direction. Similarly, when the guide 31 is continued to be driven to move from the turning groove 211 to the lower straight groove 212, the rocker arm 32 will continue to deflect with the guidance of the guide 31 to be parallel to the straight groove 212. Thus, the flipping shaft 33 can continue to rotate to the position where the suction nozzle 35 is facing downward, thereby completing the flipping action of the suction nozzle 35 from top to bottom.

[0054] Optionally, a material pick-up notch 231 can be provided on the top plate 23, and the conveying end of the conveyor belt can be connected to the material pick-up notch 231. The bottom card 50 can be conveyed to the material pick-up notch 231 by the conveyor belt, so that when the suction nozzle 35 moves upward, it can be adsorbed and removed from the conveyor belt, thereby improving the overall level of automation.

[0055] As a preferred embodiment, the guide member 31 can be a structure such as a roller to reduce the friction of the guide member 31 in the flip guide groove 21. Optionally, ball bearings can also be provided on the side wall of the flip guide groove 21 to reduce the friction between the guide member 31 and the flip guide groove 21 and ensure better stability during the guiding operation.

[0056] Furthermore, the aforementioned flipping shaft 33 includes: a rotating section 331 and a planar section 332. One end of the rotating section 331 rotatably passes through the connecting plate 34 and is fixedly connected to the rocker arm 32. The planar section 332 is connected to the other end of the rotating section 331, and the suction nozzle 35 is disposed on the planar section 332.

[0057] In a specific embodiment of this application, the first suction and discharge assembly 301 and the second suction and discharge assembly 302 are symmetrically arranged. The two flip shafts 33 can be symmetrically arranged by flipping 180 degrees around the radial direction. The plane positions of the two planar segments 332 are opposite and close to each other. For example, the planes opposite the two planar segments 332 can be spaced 0.8-3cm apart to ensure that the two flip shafts 33 will not cause stroke interference when they move up and down alternately, and to minimize the installation space of the two flip shafts 33. Optionally, the planar segment 332 can be a semi-cylinder or a planar cylinder.

[0058] Preferably, a hollow air pipe connector 38 can be provided on the aforementioned planar segment 332. The positions of the suction nozzle 35 and the air pipe mounting seat are on opposite sides of the two planar segments 332. The air pipe connector 38 can be connected to a vacuuming device or the like via an air pipe. The suction nozzle 35 can be provided on the air pipe connector 38 and interconnected, so that the vacuuming device can draw the air pipe connector 38 to a negative pressure state or blow in gas to switch to a positive pressure state. When the air pipe connector 38 is switched to a negative pressure state, the suction nozzle 35 can perform an adsorption action on the base card 50. When the air pipe connector 38 is switched to a positive pressure state, the base card 50 can be placed.

[0059] Furthermore, each of the aforementioned side plates 22 is also provided with a slide rail 36 extending vertically. The slide rail 36 is connected to the connecting plate 34 via a slider 37, so that the connecting plate 34 can move along the length direction of the slide rail 36. When the connecting plate 34 is driven by the flexible drive mechanism 40, the connecting plate 34 can move linearly along the length direction of the slide rail 36, so that the connecting plate 34 can maintain stable linear movement. During the movement, a thrust can be applied to the flipping shaft 33, so that the flipping shaft 33 can rotate with the deflection of the rocker arm 32, thereby completing the flipping action.

[0060] Reference Figure 3As shown, the flexible drive mechanism 40 includes: a motor 41, a first rotating shaft 42, a second rotating shaft 43, a first transmission belt 44, and a second transmission belt 48. The motor 41 is located at the bottom of the body 10. The first rotating shaft 42 is rotatably located at the bottom of the body 10 and is connected to the motor 41 for transmission. The second rotating shaft 43 is rotatably located on the support base 20 and is arranged parallel to the first rotating shaft 42 in the axial direction. The two ends of the first transmission belt 44 are synchronously connected to one end of the first rotating shaft 42 and the second rotating shaft 43. The two ends of the second transmission belt 48 are synchronously connected to the other end of the first rotating shaft 42 and the second rotating shaft 43.

[0061] In this embodiment, a first gear 46 is provided on the motor shaft of the motor 41, and a second gear 47 is provided at one end of the first rotating shaft 42. The first gear 46 and the second gear 47 mesh with each other. Optionally, the second gear 47 can also be provided on the second rotating shaft 43, and the motor 41 can be located close to the second rotating shaft 43, and transmission is achieved through the meshing of the first gear 46 and the second gear 47. It can be understood that when the motor 41 drives the first rotating shaft 42 to rotate, the first transmission belt 44 and the second transmission belt 48 can synchronously drive the second rotating shaft 43 to rotate, so that the first transmission belt 44 and the second transmission belt 48 can also rotate synchronously. Since there is a large transmission distance between the first rotating shaft 42 and the second rotating shaft 43, the two connecting plates 34 can be respectively... The first drive belt 44 and the second drive belt 48 drive linear movement between the first rotating shaft 42 and the second rotating shaft 43. This allows for smoother transmission and reduced noise during the rotation of the suction nozzle 35, while also simplifying the structure and facilitating maintenance. Preferably, the connecting plate 34 connected to the first drive belt 44 moves in the opposite direction to the connecting plate 34 connected to the second drive belt 48. For example, the connecting plate 34 connected to the first drive belt 44 can be located outside the first drive belt 44, and the connecting plate 34 connected to the second drive belt 48 can be located inside the second drive belt 48. When the connecting plate 34 corresponding to the first drive belt 44 moves upward, the connecting plate 34 corresponding to the second drive belt 48 moves downward. It is understood that both ends of the first rotating shaft 42 and the second rotating shaft 43 are equipped with synchronous pulleys 45, and the first drive belt 44 and the second drive belt 48 synchronously pull the first rotating shaft 42 and the second rotating shaft 43 through the synchronous pulleys 45.

[0062] As an optional approach, the bottom card 50 placement mechanism provided in this embodiment is mainly used to transport the paper bag to the bottom of the first suction and release component 301 and the second suction and release component 302 by means of conveying rollers after the paper bag is initially formed. The paper bag can be adsorbed and fixed by means of vacuum adsorption, etc. At the same time, the bottom of the paper bag can be in an open state so that the first suction and release component 301 and the second suction and release component 302 can place the bottom card 50 at the bottom of the paper bag to complete the placement operation of the bottom card 50.

[0063] The base card placement mechanism provided by this utility model can be driven by the flexible drive mechanism 40 to work alternately up and down, thereby avoiding noise generated by mechanical collision and reducing the overall operating noise. When placing the base card 50, the first suction and release component 301 can adsorb the base card 50 and the second suction and release component 302 can place the base card 50, or the first suction and release component 301 can place the base card 50 and the second suction and release component 302 can adsorb the base card 50, and so on, thereby reducing the action time of adsorption and placement of the base card 50 and improving the placement efficiency of the base card 50.

[0064] The paper bag processing equipment proposed in the embodiments of this utility model includes the bottom card placement mechanism as described above. Specifically, the paper bag processing equipment provided in this embodiment can transport paper bags to the area below the suction and release components, and perform a bottom card 50 placement action on the paper bags with open bottoms. During bottom card 50 placement, the flexible drive mechanism 40 can jointly drive the first suction and release component 301 and the second suction and release component 302 to work alternately up and down, thereby avoiding noise generated by mechanical collisions and reducing overall operating noise. Furthermore, during bottom card 50 placement, the first suction and release component 301 can adsorb the bottom card 50 while the second suction and release component 302 places the bottom card 50, or the first suction and release component 301 can place the bottom card 50 while the second suction and release component 302 adsorbs the bottom card 50, alternating in this manner. This reduces the action time for bottom card 50 adsorption and placement, improving the placement efficiency of the bottom card 50.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A bottom card placement mechanism, characterized in that, include: Organism; The support base has vertically oriented flip guide grooves on its two symmetrical sides. The first suction and release assembly is provided with a suction nozzle for adsorbing the bottom card, and the first suction and release assembly is located on one side of the support base; The second suction and release assembly is provided with a suction nozzle for adsorbing the bottom card. The second suction and release assembly is located on the other side of the support base. The first suction and release assembly and the second suction and release assembly are used to move up and down alternately along each of the flip guide grooves, and are guided and flipped by each of the flip guide grooves during movement to realize the change of the suction nozzle direction. A flexible drive mechanism is connected to the first suction and discharge assembly and the second suction and discharge assembly in a transmission manner.

2. The bottom card placement mechanism according to claim 1, characterized in that, The flipping guide groove includes a turning groove and a straight groove. The straight groove is connected to both ends of the turning groove and is arranged in a vertical direction. The turning groove includes two connected inclined grooves. The other ends of the two inclined grooves are respectively connected to a straight groove. Each inclined groove and the straight groove form an angle greater than 90° and less than 180°.

3. The bottom card placement mechanism according to claim 1, characterized in that, Both the first suction and discharge assembly and the second suction and discharge assembly include: A guide member, which is movably disposed within the flip guide groove; A rocker arm, one end of which is pivotally connected to the guide member; A flip shaft, the first end of which is fixedly connected to the other end of the rocker arm, and a suction nozzle is disposed at the second end of the flip shaft, the suction nozzle being provided with a suction cup; A connecting plate, wherein the first end of the flipping shaft rotatably passes through one end of the connecting plate, and the other end of the connecting plate is connected to the flexible drive mechanism.

4. The bottom card placement mechanism according to claim 3, characterized in that, The flipping shaft includes: A rotating section, one end of which rotatably passes through the connecting plate and is fixedly connected to the rocker arm; A planar segment is connected to the other end of the rotating segment, and the suction cup is disposed on the planar segment.

5. The bottom card placement mechanism according to claim 3, characterized in that, The support base is also provided with slide rails extending vertically on two symmetrical sides. The slide rails are connected to the connecting plate through sliders so that the connecting plate can move along the length of the slide rails.

6. The bottom card placement mechanism according to claim 3, characterized in that, The flexible drive mechanism includes: An electric motor is located at the bottom of the machine body; A first rotating shaft is rotatably disposed at the bottom of the machine body and is connected to the motor for transmission. The second rotating shaft is rotatably mounted on the support base and is arranged parallel to the first rotating shaft in the axial direction. A first transmission belt, the two ends of which are synchronously connected to one end of the first rotating shaft and one end of the second rotating shaft; The second transmission belt has its two ends synchronously connected to the other ends of the first rotating shaft and the second rotating shaft.

7. The bottom card placement mechanism according to claim 6, characterized in that, Both ends of the first rotating shaft and the second rotating shaft are provided with synchronous pulleys, and the first transmission belt and the second transmission belt synchronously pull the first rotating shaft and the second rotating shaft through the synchronous pulleys.

8. The bottom card placement mechanism according to claim 6, characterized in that, The motor shaft of the motor is provided with a first gear, and one end of the first rotating shaft is provided with a second gear, and the first gear and the second gear mesh with each other.

9. The bottom card placement mechanism according to claim 6, characterized in that, The connecting plate connected to the first transmission belt moves in the opposite direction to the connecting plate connected to the second transmission belt.

10. A paper bag processing equipment, characterized in that, Includes the base card placement mechanism as described in any one of claims 1 to 9.

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