Drum-type frame moving machine for overturning tobacco frame

Abstract

The utility model provides a drum-type frame moving machine for turning over a tobacco frame, which is provided with a tobacco frame access position, and comprises a frame moving unit provided with a holding device, a lifting device and a turnover conveyor, the conveying direction of the turnover conveyor is used as the Y direction, and the direction perpendicular to the conveying surface is used as the Z direction. The rotating device is used for driving the frame moving unit to integrally turn over between an initial position and a turnover position around the Y-direction central axis; the frame moving unit is driven by the rotating device to turn over as a whole, tobacco frames can be clamped, lifted, turned over and transferred to the turnover conveyor through orderly cooperation of the enclasping device, the lifting device and the turnover conveyor in the frame moving unit, and then the tobacco frames are output to downstream equipment through the turnover conveyor. On the premise that the original form of tobacco leaves is not changed, raw tobacco leaves in the tobacco frame can be turned over rapidly and accurately and transferred to downstream equipment accurately.

Description

Technical Field

[0001] The utility model relates to a tobacco production equipment, and more specifically to a drum - type frame transfer machine for flipping tobacco frames. Background Technique

[0002] In the traditional packaging, storage and transportation mode, the initially cured tobacco leaves are mostly transported in gunny bags. This storage and transportation method is often accompanied by a large amount of tobacco leaf breakage, oil pressing and other adverse phenomena that reduce the quality of tobacco leaves. With the production demand and technological progress in the tobacco industry, higher requirements are put forward for the efficiency, accuracy and automation degree of the handling and processing of tobacco leaves.

[0003] The conveying structure of the drum - type frame transfer machine has the characteristics of being stable, reliable and easy to control, and is suitable for the conveying and positioning of tobacco leaves. At the same time, with the continuous development of automation technology, the control system has also been greatly improved and enhanced, and can realize the intelligent and automatic operation of the equipment.

[0004] The drum - type frame transfer machine mainly flips the existing tobacco frame by 180 degrees, so that the tobacco leaves in the existing tobacco frame can be flipped and transferred to a customized feeding box or a cutting machine while keeping the original shape unchanged. However, since the inner side of the existing tobacco frame is basically grid - shaped, when in use, a canvas or burlap sheet is usually laid and then the tobacco leaves are neatly placed in the tobacco frame and then stored in the warehouse. This use method of the existing tobacco frame cannot cooperate with the automatic feeding machine. Therefore, developing a drum - type frame transfer machine that can efficiently and accurately flip the tobacco frame has become an urgent need in the industry. Content of the Utility Model

[0005] To solve the above - mentioned technical problems, the utility model provides a drum - type frame transfer machine for flipping tobacco frames, which can quickly and accurately flip the raw tobacco in the tobacco frame and accurately transfer it to the downstream equipment on the premise of keeping the original shape of the tobacco leaves unchanged.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] A drum - type frame transfer machine for flipping tobacco frames, its structural features are:

[0008] It is provided with a tobacco - frame access position for feeding and discharging tobacco frames, including a frame - transfer unit provided with a clamping device, a lifting device and a turnover conveyor. Taking the conveying direction of the turnover conveyor as the Y - direction and the direction perpendicular to the conveying surface as the Z - direction, the drum - type frame transfer machine further includes a rotating device for driving the whole frame - transfer unit to flip around the Y - axis center line between the initial position and the turnover position;

[0009] In the frame-shifting unit at the initial position, along the Z direction, the turnover conveyor is above and the conveying surface faces downward, directly facing the cigarette frame at the cigarette frame access position. A pair of clamping devices are symmetrically arranged on both sides of the cigarette frame access position along the X direction. Initially, they are at the low clamping position. The cigarette frame filled with raw tobacco sent into the cigarette frame access position from the outside has an opening facing upward and opposite to the frame bottom, and can be clamped by a pair of clamping devices at the low clamping position along the X direction facing each other, with a spacing reserved along the Z direction between the cigarette frame and the turnover conveyor.

[0010] A pair of clamping devices clamping the cigarette frame are driven by a lifting device and linearly displace upward along the Z direction towards the conveying surface of the turnover conveyor until the opening of the cigarette frame contacts the conveying surface of the turnover conveyor, switching from the low clamping position to the high clamping position. The whole cigarette frame is surrounded by the conveying surface of the turnover conveyor and the side vertical plates symmetrically arranged on both sides of the conveying surface along the X direction and carried by the turnover conveyor.

[0011] Driven by a rotating device, the whole frame-shifting unit clamping the cigarette frame can be flipped 180° around the Y-axis to the turnover position. Along the Z direction, the turnover conveyor is below and the conveying surface faces upward. When reaching the turnover position, it remains in contact with the opening of the cigarette frame inverted downward. The raw tobacco in the cigarette frame falls onto the conveying surface of the turnover conveyor by its own weight. The cigarette frame follows a pair of clamping devices driven by a lifting device to switch from the high clamping position to the low clamping position, and can linearly displace away from the turnover conveyor along the Z direction synchronously, with a spacing reserved along the Z direction between the cigarette frame and the raw tobacco on the conveying surface. The turnover conveyor is connected to the conveyor of the downstream equipment and runs in the same direction and at the same speed. The raw tobacco is output from the turnover conveyor to the downstream conveyor. After the output, a pair of clamping devices clamping the empty cigarette frame can be switched to the high clamping position by the driving of the lifting device. The empty cigarette frame and the frame-shifting unit can be driven by the rotating device to be flipped 180° in the reverse direction around the Y-axis until the frame-shifting unit returns to the initial position. The empty cigarette frame synchronously displaces with a pair of clamping devices switched to the low clamping position by the driving of the lifting device and can return to the cigarette frame access position, and is completely separated from the drum-type frame-shifting machine when the clamping of the pair of clamping devices is released.

[0012] The structural features of the present utility model also lie in:

[0013] For the cigarette frame clamped by a pair of clamping devices at the low clamping position, the spacing between the opening and the conveying surface of the turnover conveyor along the Z direction is not less than the height of a single cigarette frame.

[0014] The four corners of the bottom of the cigarette frame are provided with foot cups. The cigarette frame sent into the cigarette frame access position penetrates along the Y direction, and the two side walls perpendicular to the X direction are in a grid shape. The turnover conveyor symmetrically arranges a pair of the side vertical plates on both sides of the conveying surface along the X direction, and the plate surface of the side vertical plate is parallel to the YZ plane.

[0015] Both the turnover conveyor and the conveyor of the downstream equipment are belt conveyors.

[0016] The rotating device includes a rotary drive device, a rotary transmission mechanism, an active rotary frame, an active frame guide mechanism, a driven rotary frame, and a driven frame guide mechanism; the active rotary frame and the driven rotary frame are both annular frames arranged around the Y-axis center axis and spaced apart along the Y direction; the active rotary frame is driven by the rotary drive device, transmitted by the rotary transmission mechanism, and guided by the active frame guide mechanism, and can rotate in the positive or reverse direction along the circumferential direction around the Y-axis center axis; the driven rotary frame is fixedly connected to the active rotary frame by a Y-axis connecting frame, guided by the driven frame guide mechanism, and rotates synchronously with the active rotary frame; when the frame moving unit is in the initial position, the lower ends of the active rotary frame and the driven rotary frame are penetrated as a whole along the Y direction, and the gap formed is used for the cigarette frame to enter and exit the cigarette frame;

[0017] The frame moving unit is integrally mounted between the active rotating frame and the driven rotating frame, and rotates synchronously with the active rotating frame.

[0018] The rotary drive device includes a rotary motor and a rotary reducer, and the rotary transmission mechanism includes a driving sprocket and a driven chain. The rotary motor is driven, the speed is reduced by the rotary reducer, and the driving sprocket coaxially connected to the output shaft of the rotary reducer is driven to rotate around the central axis of the wheel shaft, and the driven chain is driven to move through the meshing transmission of the driving sprocket and the driven chain; the driven chain is wound around the Y-axis in a circumferential direction on the active rotary frame, one end of the driven chain is fixed to the active rotary frame by a fixing bolt, and the other end is fastened to the active rotary frame by a tensioning bolt, and the preload force is adjustable by the tensioning bolt.

[0019] The frame moving unit uses the moving frame body as the main frame, and the rotating device drives the moving frame body to rotate around the Y-axis, thereby driving the holding device, lifting device, and turnover conveyor installed on the moving frame body to rotate synchronously.

[0020] The lifting device includes a lifting motor, a lifting reducer, a pair of lifting transmission mechanisms, a pair of lifting frames, and a lifting slide rail assembly; the lifting motor, the lifting reducer, and the pair of lifting transmission mechanisms are installed on the moving frame body, driven by the lifting motor and transmitted through the lifting reducer; the lifting transmission mechanism is a worm screw lifting mechanism; the input shafts of a pair of lifting transmission mechanisms are coaxially connected with the output shafts of the lifting reducer, driving the screw to lift along the Z direction; a pair of screws respectively hoist a pair of lifting frames, and a pair of lifting frames are symmetrically arranged along the X direction; each side of the lifting frame is respectively configured with at least one group of lifting slide rail assemblies sliding along the Z direction according to the same structure and distribution form; the slide rails of the lifting slide rail assemblies are installed on the lifting frame, and the sliders are installed on the moving frame body; the clamping device is installed on the lifting frame.

[0021] Each pair of clamping devices includes two clamping modules arranged at intervals in the Y direction. Each clamping module includes a clamping cylinder and a clamping block installed at the execution end of the clamping cylinder. The clamping block is driven by the clamping cylinder to extend along the X direction towards the bottom end of the tobacco frame reaching the access position of the tobacco frame, and is clamped on the side frame edge of the tobacco frame on the corresponding side.

[0022] Compared with the prior art, the beneficial effects of the present utility model are reflected in:

[0023] The present utility model combines the drum-type conveying technology and the automatic control technology. Through the rotation device driving the overall flipping of the frame transfer unit, and the orderly cooperation of the clamping device, lifting device, and turnover conveyor in the frame transfer unit, the clamping, lifting, flipping, and transfer of the tobacco frame to the turnover conveyor can be realized, and then output to the downstream equipment through the turnover conveyor. It can quickly and accurately flip the raw tobacco in the tobacco frame and accurately transfer it to the downstream equipment on the premise of ensuring the original shape of the tobacco leaves remains unchanged. It not only improves the production line efficiency, reduces the labor intensity of manual operation, but also ensures the product quality. Brief Description of the Drawings

[0024] Figure 1 It is a schematic structural view of the present utility model when the frame transfer unit is in the turnover position and a pair of clamping devices are in the low clamping position;

[0025] Figure 2 It is a schematic structural view of the rotation device;

[0026] Figure 3 It is a schematic principle view of the rotation transmission mechanism;

[0027] Figure 4 It is a schematic structural view of the lifting frame and the clamping device;

[0028] Figure 5 It is a schematic structural view of the lifting device.

[0029] In the figure:

[0030] 1 Rotation device; 11 Rotation drive device; 111 Rotation motor; 112 Rotation reducer; 12 Rotation transmission mechanism; 121 Driving sprocket; 122 Driven chain; 123 Fixing bolt; 124 Tensioning bolt; 13 Driving rotation frame; 14 Driving frame guiding mechanism; 141 Driving guiding frame; 142 Driving guiding wheel; 15 Driven rotation frame; 16 Driven frame guiding mechanism; 161 Driven guiding frame; 162 Driven guiding wheel; 17 Y-direction connecting frame;

[0031] 2 Frame transfer body;

[0032] 3 Clamping device; 31 Clamping cylinder; 32 Clamping block;

[0033] 4 Lifting device; 41 Lifting motor; 42 Lifting speed reducer; 43 Lifting transmission mechanism; 44 Lifting frame; 45 Lifting slide rail assembly;

[0034] 5 Turnover conveyor; 51 Side vertical plate;

[0035] 6 Tobacco frame;

[0036] 7 Frame. Detailed implementation mode

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the protection scope of the present utility model.

[0038] Please refer to Figures 1 to 5 , the structure of the drum-type frame transfer machine for flipping the tobacco frame in this embodiment is as follows:

[0039] There is a tobacco frame access position for feeding and discharging the tobacco frame 6. The frame transfer unit is provided with a clamping device 3, a lifting device 4, and a turnover conveyor 5. Taking the conveying direction of the turnover conveyor 5 as the Y direction and the direction perpendicular to the conveying surface as the Z direction, the drum-type frame transfer machine further includes a rotating device 1 for driving the entire frame transfer unit to rotate around the Y-axis center line between the initial position and the turnover position;

[0040] In the frame transfer unit in the initial position, along the Z direction, the turnover conveyor 5 is above and the conveying surface faces downward and is directly opposite to the tobacco frame 6 at the tobacco frame access position. A pair of clamping devices 3 are symmetrically distributed on both sides of the tobacco frame access position along the X direction. Initially, they are at the low clamping position. The tobacco frame 6 filled with raw tobacco fed into the tobacco frame access position from the outside has the opening facing upward and is opposite to the frame bottom, and can be clamped by a pair of clamping devices 3 at the low clamping position along the X direction in an opposite direction, and a gap is reserved along the Z direction between the tobacco frame 6 and the turnover conveyor 5;

[0041] A pair of clamping devices 3 clamping the tobacco frame 6 are driven by the lifting device 4 and linearly displace upward along the Z direction towards the conveying surface of the turnover conveyor 5 until the opening of the tobacco frame 6 contacts the conveying surface of the turnover conveyor 5, and switches from the low clamping position to the high clamping position. The entire tobacco frame 6 is surrounded by the conveying surface of the turnover conveyor 5 and the side vertical plates 51 symmetrically arranged on both sides of the conveying surface along the X direction carried by the turnover conveyor 5;

[0042] Driven by the rotating device 1, the moving frame unit holding the cigarette frame 6 can be turned 180 degrees around the Y-axis to the turnover position. Along the Z direction, the turnover conveyor 5 is at the bottom and the conveying surface is facing upward. When it reaches the turnover position, it keeps contact with the opening of the downward-inverted cigarette frame 6. The original cigarettes in the cigarette frame 6 fall onto the conveying surface of the turnover conveyor 5 by their own weight. The cigarette frame 6 follows a pair of clamping devices 3 driven by the lifting device 4 to switch from the high clamping position to the low clamping position. It can synchronously move linearly away from the turnover conveyor 5 along the Z direction, and keep a distance from the original cigarettes on the conveying surface along the Z direction; the tail end of the turnover conveyor 5 and the downstream The head end of the conveyor of the equipment is connected and runs in the same direction and at a constant speed. The raw cigarettes are output to the downstream conveyor through the turnover conveyor 5. After output, a pair of clamping devices 3 holding the empty cigarette frame 6 can be switched to the high clamping position through the lifting device 4. The empty cigarette frame 6 and the frame moving unit are driven by the rotating device 1 to flip 180° around the Y-axis until the frame moving unit returns to its initial position. The empty cigarette frame 6 is synchronously displaced with the pair of clamping devices 3 driven by the lifting device 4 to the low clamping position, and can return to the cigarette frame entry and exit position. When the pair of clamping devices 3 release the clamping, it is completely separated from the roller-type frame moving machine.

[0043] In a specific implementation, the corresponding structural setting of the drum-type frame moving machine also includes:

[0044] The cigarette frame 6 clamped by a pair of clamping devices 3 in the clamping low position has an opening spaced from the conveying surface of the turnover conveyor 5 along the Z direction that is not less than the height of a single cigarette frame 6.

[0045] The cigarette frame 6 has foot cups at the four corners of its bottom. The cigarette frame 6 fed into the cigarette frame entry and exit position is continuous along the Y direction, and its two side walls perpendicular to the X direction are in a grid shape. The turnover conveyor 5 is symmetrically provided with a pair of side vertical plates 51 on both sides of the conveying surface along the X direction, and the plate surfaces of the side vertical plates 51 are parallel to the YZ plane.

[0046] The turnover conveyor 5 and the conveyors of the downstream equipment are both belt conveyors.

[0047] The rotating device 1 includes a rotary drive device 11, a rotary transmission mechanism 12, an active rotary frame 13, an active frame guide mechanism 14, a driven rotary frame 15, and a driven frame guide mechanism 16; the active rotary frame 13 and the driven rotary frame 15 are both annular frames arranged around the Y-axis, and are spaced apart along the Y-direction; the active rotary frame 13 is driven by the rotary drive device 11, transmitted by the rotary transmission mechanism 12, and guided by the active frame guide mechanism 14, and can rotate in the positive or reverse direction along the circumferential direction around the Y-axis; the driven rotary frame 15 is fixedly connected to the active rotary frame 13 by a Y-direction connecting frame 17, and is guided by the driven frame guide mechanism 16, and rotates synchronously with the active rotary frame 13; when the frame moving unit is in the initial position, the lower ends of the active rotary frame 13 and the driven rotary frame 15 are penetrated as a whole along the Y-direction, and the gap formed is used for the cigarette frame 6 to enter and exit the cigarette frame entry and exit position;

[0048] The frame shifting unit is integrally installed between the active rotating frame 13 and the driven rotating frame 15 and rotates synchronously with the active rotating frame 13.

[0049] The rotation driving device 11 includes a rotation motor 111 and a rotation speed reducer 112. The rotation transmission mechanism 12 includes a driving sprocket 121 and a driven chain 122. Driven by the rotation motor 111 and decelerated by the rotation speed reducer 112, the driving sprocket 121 coaxially connected to the output shaft of the rotation speed reducer 112 rotates around the central axis of the wheel shaft. Through the meshing transmission between the driving sprocket 121 and the driven chain 122, the driven chain 122 is driven to move. The driven chain 122 is wound around the active rotating frame 13 along the circumferential direction around the Y-axis central axis. One end is fixed to the active rotating frame 13 through the driven chain 123, and the other end is fastened to the active rotating frame 13 through the tensioning bolt 124. The pre-tightening force is adjustable through the tensioning bolt 124. The tensioning bolt 124 is connected to the end of the driven chain 122 through the end of the screw rod and is threaded through the matching screw hole on the active rotating frame 13. By turning the tensioning bolt 124, the driven chain 122 is tightened or loosened along the circumferential direction along the active rotating frame 13, completing the adjustment of the pre-tightening force of the driven chain 122 and ensuring that the rotation driving device 11 can effectively drive the active rotating frame 13 to rotate.

[0050] Multiple groups of active frame guiding mechanisms 14 are circumferentially and spacedly distributed around the Y-axis central axis and cooperate with the active rotating frame 13. Each group includes an active guiding frame 141 and an active guiding wheel 142. The active guiding frame 141 is installed on the frame of the drum type frame shifter 7 and is provided with multiple active guiding wheels 142 that can rotate around the wheel shaft. The circumferences of the multiple active guiding wheels 142 are respectively in rolling contact with the outer peripheral surface and the inner peripheral surface of the active rotating frame 13, and the active rotating frame 13 is separated on both sides of the frame body along the radial direction of the frame body. Multiple groups of driven frame guiding mechanisms 16 are circumferentially and spacedly distributed around the Y-axis central axis and cooperate with the driven rotating frame 15. Each group includes a driven guiding frame 161 and a driven guiding wheel 162. The driven guiding frame 161 is installed on the frame 7 and is provided with a driven guiding wheel 162 that can rotate around the wheel shaft. The rolling contact between the circumference of the driven guiding wheel 162 and the outer peripheral surface of the driven rotating frame 15 is maintained.

[0051] The frame shifting unit takes the frame shifting body 2 as the main frame and is installed between the active rotating frame 13 and the driven rotating frame 15 through the frame shifting body 2. The rotating device 1 drives the frame shifting body 2 to rotate around the Y-axis central axis, driving the clamping device 3, the lifting device 4, and the turnover conveyor 5 installed on the frame shifting body 2 to rotate synchronously.

[0052] The lifting device 4 includes a lifting motor 41, a lifting speed reducer 42, a pair of lifting transmission mechanisms 43, a pair of lifting frames 44, and a lifting slide rail assembly 45; the lifting motor 41, the lifting speed reducer 42, and the pair of lifting transmission mechanisms 43 are installed on the moving frame body 2. Driven by the lifting motor 41 and transmitted through the lifting speed reducer 42, the lifting transmission mechanisms 43 are worm screw elevators. The input shafts of the pair of lifting transmission mechanisms 43 are coaxially connected to the output shaft of the lifting speed reducer 42 respectively, driving the screw to lift along the Z direction. A pair of screws respectively hoist a pair of lifting frames 44. The pair of lifting frames 44 are symmetrically arranged along the X direction. At least one set of lifting slide rail assemblies 45 that slide along the Z direction are arranged on each side of the lifting frame 44 according to the same structure and distribution form. The slide rails of the lifting slide rail assembly 45 are installed on the lifting frame 44, and the sliders are installed on the moving frame body 2; the clamping device 3 is installed on the lifting frame 44.

[0053] Each pair of clamping devices 3 includes two clamping modules arranged at intervals along the Y direction. Each clamping module includes a clamping cylinder 31 and a clamping block 32 installed at the execution end of the clamping cylinder 31. The clamping block 32 is driven by the clamping cylinder 31 to extend along the X direction towards the bottom end of the tobacco frame 6 reaching the tobacco frame access position, and is clamped on the frame edge of the tobacco frame 6 on the corresponding side.

[0054] As a common unit logistics method in the tobacco industry, the tobacco frame can be stacked, and can be transported by forklifts, stackers, manual hydraulic trucks, AGVs, etc. It can improve the mechanization and containerization operation level of raw tobacco logistics, and is more and more widely used in the storage and transportation links of the tobacco industry. The existing tobacco frame 6 has basically grid-shaped side walls. When used for storing and transporting raw tobacco, canvas or burlap pieces are generally laid on the bottom and walls of the frame inside the frame first, then the tobacco leaves are neatly placed in the frame, and then stored in the warehouse. The existing use method of the tobacco frame 6 cannot cooperate with the automatic feeding machine, and there has always been no effective solution in the industry. The drum-type tobacco frame transfer machine of this embodiment is designed for this purpose, and can efficiently and accurately flip the tobacco frame full of raw tobacco, ensure that the original shape of the tobacco leaves remains unchanged, and transport the raw tobacco to downstream equipment, such as an automatic feeding machine or a cutting machine, further improving the mechanization and automation operation level of raw tobacco logistics.

[0055] The following is an application example of this embodiment for reference:

[0056] Step 1: Transport the tobacco frame 6 full of raw tobacco in the raw tobacco warehouse or the preparation area to the tobacco frame access position through an AGV, forklift, stacker, manual hydraulic truck, etc.

[0057] Step 2: The transfer unit is in the initial position, the turnover conveyor 5 is inverted on it, facing the tobacco frame 6 at the tobacco frame access position. A pair of clamping devices 3 in the low clamping position act and clamp the tobacco frame 6 in the X direction facing each other.

[0058] Step 3: The lifting device 4 is driven to move the pair of clamping devices 3 and the cigarette rack 6 clamped by them linearly toward the conveying surface of the turnover conveyor 5 along the Z direction to the clamping high position, so that the cigarette rack 6 is surrounded by the conveying surface of the turnover conveyor 5 and the side vertical plates 51 on both sides of the conveying surface;

[0059] Step 4: The rotating device 1 is driven to drive the frame moving unit holding the cigarette frame 6 to rotate 180 degrees around the Y-axis to the turnover position, so that the turnover conveyor 5 is at the bottom and the conveying surface is facing upward. At this time, the conveying surface maintains contact with the opening of the downwardly inverted cigarette frame 6, and the raw cigarettes in the cigarette frame 6 fall onto the conveying surface of the turnover conveyor 5 by their own weight, completing the transfer of the raw cigarettes from the cigarette frame 6 to the turnover conveyor 5;

[0060] Step 5: The lifting device 4 is driven to drive the pair of holding devices 3 and the empty cigarette frames 6 held by them to move linearly along the Z direction away from the conveying surface of the turnover conveyor 5 to the holding low position. The displacement distance is about 1500mm, so that the side frame walls of the cigarette frames 6 are completely separated from the raw cigarettes on the turnover conveyor 5. This ensures that the flipped raw cigarettes can be smoothly discharged to the conveyor of the downstream equipment and that the original shape of the tobacco leaves remains unchanged.

[0061] Step 6: The raw cigarettes are output to the conveyor of the downstream equipment through the turnover conveyor 5 running in the same direction and at a constant speed;

[0062] Step 7: The lifting device 4 is driven to drive a pair of holding devices 3 and the empty cigarette frame 6 clamped by them to move linearly along the Z direction toward the conveying surface of the turnover conveyor 5 to the holding high position. Then the rotating device 1 is driven to drive the frame moving unit holding the empty cigarette frame 6 to flip 180° around the Y-axis to the initial position. The lifting device 4 is driven again to move the pair of holding devices 3 with the empty cigarette frame 6 to the holding low position, so that the empty cigarette frame 6 returns to the cigarette frame entry and exit position. The pair of holding devices 3 releases the clamping of the empty cigarette frame 6. At this point, the entire frame turning process is completed, and the empty cigarette frame 6 can be taken out by AGV, forklift, stacker or human hydraulic vehicle.

[0063] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A drum-type frame transfer machine for flipping a cigarette frame, characterized in that: It is provided with a cigarette frame access position for feeding and discharging the cigarette frame (6), and includes a frame transfer unit provided with a clamping device (3), a lifting device (4), and a turnover conveyor (5). Taking the conveying direction of the turnover conveyor (5) as the Y direction and the direction perpendicular to the conveying surface as the Z direction, the drum-type frame transfer machine further includes a rotating device (1) for driving the entire frame transfer unit to flip around the Y-axis center line between the initial position and the turnover position; In the frame transfer unit in the initial position, along the Z direction, the turnover conveyor (5) is above and the conveying surface faces downward, facing the cigarette frame (6) at the cigarette frame access position. A pair of clamping devices (3) are symmetrically arranged on both sides of the cigarette frame access position along the X direction. Initially, they are at the low clamping position. The cigarette frame (6) filled with raw tobacco sent into the cigarette frame access position from the outside has its opening facing upward and opposite to the frame bottom, and can be clamped by a pair of clamping devices (3) at the low clamping position along the X direction towards each other, and a spacing is reserved along the Z direction between it and the turnover conveyor (5); A pair of clamping devices (3) clamping the cigarette frame (6) are driven by the lifting device (4) to linearly displace upward along the Z direction towards the conveying surface of the turnover conveyor (5) until the opening of the cigarette frame (6) contacts the conveying surface of the turnover conveyor (5), and switches from the low clamping position to the high clamping position. The entire cigarette frame (6) is surrounded by the conveying surface of the turnover conveyor (5) and the side plates (51) symmetrically arranged on both sides of the conveying surface along the X direction carried by the turnover conveyor (5); Driven by the rotating device (1), the entire frame transfer unit clamping the cigarette frame (6) can flip 180° around the Y-axis center line to the turnover position. Along the Z direction, the turnover conveyor (5) is below and the conveying surface faces upward. When reaching the turnover position, it remains in contact with the opening of the cigarette frame (6) inverted downward. The raw tobacco in the cigarette frame (6) falls onto the conveying surface of the turnover conveyor (5) by its own weight. The cigarette frame (6) follows a pair of clamping devices (3) driven by the lifting device (4) to switch from the high clamping position to the low clamping position, and can linearly displace away from the turnover conveyor (5) along the Z direction synchronously, and a spacing is reserved along the Z direction from the raw tobacco on the conveying surface; The turnover conveyor (5) is connected to the conveyor of the downstream equipment and runs in the same direction and at the same speed. The raw tobacco is output to the downstream conveyor through the turnover conveyor (5). After output, a pair of clamping devices (3) clamping the empty cigarette frame (6) can be driven by the lifting device (4) to switch to the high clamping position. The empty cigarette frame (6) and the frame transfer unit can be driven by the rotating device (1) to reverse flip 180° around the Y-axis center line until the frame transfer unit returns to the initial position. The empty cigarette frame (6) displaces synchronously with a pair of clamping devices (3) driven by the lifting device (4) to switch to the low clamping position, and can return to the cigarette frame access position. When the clamping of the pair of clamping devices (3) is released, it completely detaches from the drum-type frame transfer machine.

2. The drum-type frame transfer machine for flipping cigarette frames according to claim 1, characterized in that: For the cigarette frame (6) clamped by a pair of clamping devices (3) at the low clamping position, the spacing between the opening and the conveying surface of the turnover conveyor (5) along the Z direction is not less than the height of a single cigarette frame (6).

3. The drum-type frame transfer machine for flipping a cigarette frame according to claim 1, characterized in that: The cigarette frame (6) has foot cups at the four corners of the bottom, and the cigarette frame (6) fed into the cigarette frame entry and exit position is continuous along the Y direction, and the two side walls perpendicular to the X direction are in a grid shape; the turnover conveyor (5) is symmetrically provided with a pair of side vertical plates (51) on both sides of the conveying surface along the X direction, and the plate surface of the side vertical plates (51) is parallel to the YZ plane.

4. The drum-type frame transfer machine for flipping cigarette frames according to claim 1 or 3, characterized in that: The turnover conveyor (5) and the conveyor of the downstream equipment are both belt conveyors.

5. The drum-type frame transfer machine for flipping cigarette frames according to claim 1, characterized in that: The rotating device (1) comprises a rotating drive device (11), a rotating transmission mechanism (12), an active rotating frame (13), an active frame guide mechanism (14), a driven rotating frame (15), and a driven frame guide mechanism (16); the active rotating frame (13) and the driven rotating frame (15) are both annular frames arranged around the Y-axis and spaced apart along the Y-axis; the active rotating frame (13) is driven by the rotating drive device (11), transmitted by the rotating transmission mechanism (12), and guided by the active frame guide mechanism (14), and is rotatable in the positive or negative circumferential direction around the Y-axis; the driven rotating frame (15) is fixedly connected to the active rotating frame (13) through the Y-connecting frame (17), guided by the driven frame guide mechanism (16), and rotates synchronously with the active rotating frame (13); when the frame moving unit is in the initial position, the lower ends of the active rotating frame (13) and the driven rotating frame (15) are integrally connected along the Y-axis, and the gap formed is used for the cigarette frame (6) to enter and exit the cigarette frame entry and exit position; The frame moving unit is integrally mounted between the active rotating frame (13) and the driven rotating frame (15), and rotates synchronously with the active rotating frame (13).

6. The drum-type frame transfer machine for flipping cigarette frames according to claim 5, characterized in that: The rotary drive device (11) includes a rotary motor (111) and a rotary reducer (112); the rotary transmission mechanism (12) includes a driving sprocket (121) and a driven chain (122); the rotary motor (111) drives the driving sprocket (121) coaxially connected to the output shaft of the rotary reducer (112) and rotates around the central axis of the wheel shaft; the driven chain (122) is driven to move by the meshing transmission between the driving sprocket (121) and the driven chain (122); the driven chain (122) is wound around the Y-axis in a circumferential direction on the driving rotary frame (13); one end of the driven chain is fixed to the driving rotary frame (13) by a fixing bolt (123); the other end is fastened to the driving rotary frame (13) by a tensioning bolt (124); and the preload force is adjustable by the tensioning bolt (124).

7. The drum type frame transfer machine for flipping cigarette frames according to claim 1, characterized in that: The frame moving unit has a moving frame body (2) as a main frame, and the rotating device (1) drives the moving frame body (2) to rotate around the Y-axis, thereby driving the holding device (3), the lifting device (4), and the turnover conveyor (5) installed on the moving frame body (2) to rotate synchronously.

8. The drum-type frame transfer machine for flipping the cigarette frame according to claim 7, characterized in that: The lifting device (4) includes a lifting motor (41), a lifting speed reducer (42), a pair of lifting transmission mechanisms (43), a pair of lifting frames (44), and a lifting slide rail assembly (45); the lifting motor (41), the lifting speed reducer (42), and the pair of lifting transmission mechanisms (43) are installed on the moving frame body (2), driven by the lifting motor (41) and transmitted through the lifting speed reducer (42). The lifting transmission mechanism (43) is a worm screw lifter. The input shafts of the pair of lifting transmission mechanisms (43) are coaxially connected to the output shaft of the lifting speed reducer (42), driving the screw to lift along the Z direction. A pair of screws respectively hoist a pair of lifting frames (44). The pair of lifting frames (44) are symmetrically arranged along the X direction. At least one set of lifting slide rail assemblies (45) that slide along the Z direction are arranged on each side of the lifting frame (44) according to the same structure and distribution form. The slide rail of the lifting slide rail assembly (45) is installed on the lifting frame (44), and the slider is installed on the moving frame body (2); the clamping device (3) is installed on the lifting frame (44).

9. The drum-type frame transfer machine for flipping cigarette frames according to claim 1 or 8, characterized in that: Each pair of clamping devices (3) includes two clamping modules arranged at intervals along the Y direction. Each clamping module includes a clamping cylinder (31) and a clamping block (32) installed at the execution end of the clamping cylinder (31). The clamping block (32) is driven by the clamping cylinder (31) to extend along the X direction towards the bottom end of the cigarette frame (6) reaching the cigarette frame access position, and is clamped on the frame edge of the cigarette frame (6) on the corresponding side.

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