A high-speed unpacking device for a carton forming machine

Abstract

The invention relates to a high-speed box opening device of a carton forming machine, the device comprises an upper box opening mechanism, a lower box suction mechanism and a material transfer track; the material transfer track is horizontally connected and installed on a frame, a flat box blank is arranged on the material transfer track, the upper box opening mechanism is located above the material transfer track, and the lower box suction mechanism is located below the material transfer track; the lower box suction mechanism is used to suck the bottom surface of the carton and perform traction, and the upper box opening mechanism is used to suck the top surface of the carton and perform a box opening operation to form a three-dimensional carton; the upper box opening mechanism comprises a motor mounting plate, a first motor, a connecting sleeve, a central sun sprocket, an output rotating shaft, a main planetary frame, a secondary planetary frame, a planetary sprocket, a tensioning wheel assembly, a chain, an output shaft, an air disk connecting piece and a first air suction disk; the planetary sprocket has the same size and specification as the central sun sprocket and is driven by a chain; the invention has the advantages of fast box opening speed, good box opening effect and small machine vibration.

Description

Technical Field

[0001] The invention relates to the field of packaging, and in particular to a high-speed box opening device of a carton forming machine. Background Art

[0002] At present, all domestic cartoning machines are equipped with unpacking devices, some of which use single suction cups, and some use double suction cups. In the double suction cup structure, one suction cup is used to suck the front of the box blank and transport it forward for a distance, and then the other suction cup is used to suck the back of the box blank, and then the front suction cup is flipped down 90° to realize unpacking of the box blank, and then the two suction cups move together to transport the carton to the next station, and finally the two suction cups return to the initial position to unpack and transport the next box blank, and so on. The unpacking device with a double suction cup structure can only realize intermittent unpacking and transportation of the box blank. In actual use, it is found that it takes a long time for the two suction cups to move together to transport the carton to the next station and return to the initial position, that is, there is a "intermittent" phenomenon, and continuous unpacking and transportation cannot be achieved.

[0003] The State Intellectual Property Office published a patent with the publication number CN103662182B on September 21, 2018, and the patent name is a carton forming machine. The patent includes a frame, and the frame is provided with four stations from right to left in sequence. The frame is provided with a translation drive mechanism for pushing the carton from right to left, and a linear box guide rail across the four stations is fixed: the first station of the frame is fixed with a feed rack, the second station is provided with a box opening mechanism for unfolding the carton sheet into a rectangular carton, and an inner folding folding cylinder for folding the inner folding at the front end of the carton, the third station is provided with an outer folding folding cylinder for folding the outer folding at the front end of the carton, and the fourth station is provided with a tape applicator, and the tape applicator is arranged on the front edge of the box guide rail. The patent uses a connecting rod combined box opening mechanism, and the box opening speed is limited by the moment of inertia and vibration.

[0004] The State Intellectual Property Office published a patent on July 21, 2010, with the publication number CN101450539B and the patent name of high-speed carton forming machine. The patent includes a main machine part, an ejector part and a stacking supply part. The main machine part includes a paper cutting and conveying assembly, a box opening and forming assembly, a box blocking and positioning assembly, a gluing assembly, an outer folding assembly, a box discharging and dropping assembly, and a box pressing and forming assembly and an upper box adjusting assembly arranged on one side. The box pressing and forming assembly includes two parallel small circulating guide rails, a circulating transmission chain, a sliding guide rail, a box pressing assembly, and a large circulating guide rail. The sliding guide rail is vertically arranged between the two small circulating guide rails and connected to the circulating transmission chain. The two ends of the sliding guide rail are respectively connected to the two small circulating guide rails through a slider. The end of the box pressing assembly is installed on the sliding guide rail through a sliding sleeve. The upper side of the box pressing assembly is connected to the large circulating guide rail through a roller. The large circulating guide rail is provided with a curved convex track. The box opening and forming assembly of the patent adopts a connecting rod mechanism, and the box opening speed is limited by the moment of inertia and vibration. Summary of the invention

[0005] The purpose of the present invention is to provide a high-speed box opening device for a carton forming machine with fast box opening speed, good box opening effect and small machine vibration in view of the shortcomings of the prior art.

[0006] For the purpose of the present invention, the following technical solutions are adopted to achieve the goal:

[0007] A high-speed box opening device for a carton forming machine, the device comprises an upper box opening mechanism, a lower box suction mechanism and a material transfer track; the material transfer track is horizontally connected and installed on a frame, a flat box blank is arranged on the material transfer track, the upper box opening mechanism is located above the material transfer track, and the lower box suction mechanism is located below the material transfer track; the lower box suction mechanism is used to suck the bottom surface of the carton and perform traction, and the upper box opening mechanism is used to suck the top surface of the carton and perform the box opening operation to form a three-dimensional carton;

[0008] The upper opening mechanism includes a motor mounting plate, a first motor, a connecting sleeve, a central sun sprocket, an output shaft, a main planet carrier, a secondary planet carrier, a planetary sprocket, a tensioning wheel assembly, a chain, an output shaft, an air disk connecting plate and a first suction disk; the first motor is fixedly arranged on the motor mounting plate, the output shaft is arranged at the output position of the first motor, one end of the connecting sleeve is connected to the motor mounting plate, and the other end is fixedly connected to the central sun sprocket; the output shaft is located inside the connecting sleeve; a keyway is arranged at the end of the output shaft, a keyway hole is arranged at the central position of the main planet carrier, the output shaft is fixedly connected to the main planet carrier, and the secondary planet carrier is fixedly connected to the main planet carrier. The frame is fixedly connected to the main planetary frame, and the output shaft is rotationally connected to the auxiliary planetary frame; the planetary sprocket is fixedly connected to the output shaft, and the planetary sprockets are located at both ends of the planetary frame; the planetary sprockets and the center sun sprocket have the same size specifications; the planetary sprockets and the center sun sprocket are driven by a chain; the output shaft is connected to the main planetary frame through a horizontal bearing, one end of the output shaft is provided with a fan-shaped connecting piece for connection, the other end is provided with an intake valve, and a through hole is provided in the center of the output shaft; the first intake disk is fixedly set on the air disk connecting piece; the installation angle between the air disk connecting piece and the output shaft can be adjusted, and the air disk connecting piece is positioned vertically.

[0009] Preferably, the lower suction box mechanism comprises a base frame, a slide rail assembly, a movable plate, a lifting and adjusting cylinder, a connecting plate, a second suction disk, a rotating disk, a transmission rod, a second motor and a driving shaft; the base frame is connected to the frame, and the two ends of the movable plate are movably connected to the base frame through the slide rail assembly; the upper end surface of the movable plate is provided with a lifting and adjusting cylinder, and the second suction disk is installed on the telescopic end of the lifting and adjusting cylinder through the connecting plate; the lower end surface of the connecting plate is provided with a connecting ear, one end of the transmission rod is hinged to the connecting ear of the connecting plate, and the other end is hinged to the eccentric hole of the rotating disk; the center of the rotating disk is fixed to the driving shaft, the driving shaft is connected to the frame through a bearing, and the driving shaft is connected to the output end of the second motor through a coupling.

[0010] Preferably, the suction end of the second suction disc faces upward, and two second suction discs are provided.

[0011] Preferably, the main planet carrier is provided with an adjustment slot.

[0012] Preferably, the central sun sprocket is a double sprocket.

[0013] Preferably, a tensioning wheel assembly is provided on the planet carrier for tensioning the chain.

[0014] Preferably, the air disk connecting piece is folded, the vertical portion is a fan-shaped piece connected to the end of the output shaft, and the horizontal portion is fixed to the first suction disk.

[0015] Preferably, the first suction plate is located above the two material transfer tracks.

[0016] Preferably, the two planetary sprockets are symmetrical about the center of the central sun sprocket.

[0017] Preferably, the suction end of the first suction disc is provided with a bellows.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting a rotating upper unpacking mechanism, the two first suction discs work in a cycle, which can double the unpacking speed, and the mechanism is symmetrically arranged about the central axis of rotation, and after the working speed is further improved, the vibration stability of the mechanism is also better and the noise is small; the fixed points of the unpacking action are the bottom and the top, and compared with the fixing method of the bottom and the side, the stability of the unpacking is improved and the box body is not easy to shake; the horizontal structure of the unpacking device is compact and can be conveniently arranged in the carton forming assembly line; since the upper unpacking mechanism rotates a whole circle, the layout of the pneumatic pipeline adopts a hollow component design, as a part of the gas pipeline, which can effectively avoid the problem of air pipe entanglement and knotting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the explosion structure of an embodiment of the present invention.

[0020] Figure 2 It is a schematic diagram of the explosion structure of the upper opening mechanism.

[0021] Figure 3 It is a schematic diagram of the explosion structure of the down-suction box mechanism.

[0022] In the figure: upper box opening mechanism 1, lower box suction mechanism 2, material transfer track 3, box blank 401, three-dimensional carton 402, motor mounting plate 11, first motor 12, connecting sleeve 13, center sun sprocket 14, output rotating shaft 15, main planetary frame 161, auxiliary planetary frame 162, planetary sprocket 17, tensioning wheel assembly 18, chain 19, output shaft 110, air disc connecting piece 111, first suction disc 112, base frame 21, slide rail assembly 22, movable plate 23, lifting and lowering adjustment cylinder 24, connecting plate 25, second suction disc 26, rotating disc 27, transmission rod 28, second motor 29, driving shaft 210. DETAILED DESCRIPTION

[0023] like Figure 1As shown, a high-speed box opening device of a carton forming machine includes an upper box opening mechanism 1, a lower box suction mechanism 2 and a material transfer track 3; the material transfer track 3 is horizontally connected and installed on the frame, a flat box blank 401 is arranged on the material transfer track 3, the upper box opening mechanism 1 is located above the material transfer track 3, and the lower box suction mechanism 2 is located below the material transfer track 3; the lower box suction mechanism 2 is used to suck the bottom surface of the carton and perform traction, and the upper box opening mechanism 1 is used to suck the top surface of the carton and perform the box opening operation to transform it into a three-dimensional carton 402.

[0024] like Figure 2 As shown, the upper opening mechanism 1 includes a motor mounting plate 11, a first motor 12, a connecting sleeve 13, a central sun sprocket 14, an output shaft 15, a main planetary carrier 161, a secondary planetary carrier 162, a planetary sprocket 17, a tensioning wheel assembly 18, a chain 19, an output shaft 110, an air disk connecting piece 111 and a first suction disk 112; the first motor 12 is fixedly arranged on the motor mounting plate 11, the output shaft 15 is arranged at the output position of the first motor 12, and one end of the connecting sleeve 13 is connected to the motor mounting plate 11 1, and the other end is fixedly connected to the central sun sprocket 14, and the central sun sprocket 14 is a double sprocket; the output shaft 15 is located inside the connecting sleeve 13; the end of the output shaft 15 is provided with a keyway, and the central part of the main planet carrier 161 is provided with a keyway hole 163, the output shaft 15 is fixedly connected to the main planet carrier 161, the auxiliary planet carrier 162 is fixedly connected to the main planet carrier 161, and the output shaft 15 is rotatably connected to the auxiliary planet carrier 162; the planetary sprocket 17 is connected to the output shaft 15, and the output shaft 15 is ... The output shaft 110 is fixedly connected, and the planetary sprockets 17 are located at both ends of the planetary frame; the planetary sprockets 17 are of the same size as the central sun sprocket 14; the planetary sprockets 17 and the central sun sprocket 14 are driven by a chain 19, and a tensioning wheel assembly 18 is provided on the planetary frame for tensioning the chain; the output shaft 110 is connected to the main planetary frame 161 through a horizontal bearing 164, and one end of the output shaft 110 is provided with a fan-shaped connecting piece for connection, and the other end is provided with an intake valve, and the output shaft 110 is connected to the main planetary frame 161 through a horizontal bearing 164. 0 is provided with a through hole at the center thereof for use as a gas pipeline; the first suction disc 112 is fixedly arranged on the gas disc connecting piece 111, the gas disc connecting piece 111 is folded, the vertical part is a fan-shaped piece, connected to the end of the output shaft 110, and the horizontal part is fixed to the first suction disc 112; the installation angle between the gas disc connecting piece 111 and the output shaft 110 can be adjusted to ensure that the first suction disc 112 remains vertical; the main planetary frame 161 is provided with an adjustment slot 165 to adjust the position of the output shaft 110.

[0025] When the upper opening mechanism 1 is working, the first motor 12 drives the output shaft 15 to rotate, and the output shaft 15 drives the main planetary carrier 161 to rotate. When the planetary carrier rotates, since the position of the center sun sprocket 14 is fixed and is constrained by the internal chain drive, the position of the air disk connecting plate 111 is always kept vertical and makes circular rotation in the vertical plane.

[0026] like Figure 3 As shown, the lower suction box mechanism 2 includes a base frame 21, a slide rail assembly 22, a movable plate 23, a lifting adjustment cylinder 24, a connecting plate 25, a second suction disc 26, a rotating disc 27, a transmission rod 28, a second motor 29 and a driving shaft 210; the base frame 21 is connected to the frame, and both ends of the movable plate 23 are movably connected to the base frame 21 through the slide rail assembly 22; the upper end surface of the movable plate 23 is provided with a lifting adjustment cylinder 24, and the second suction disc 26 is installed on the lifting adjustment cylinder through the connecting plate 25 24, the suction end of the second suction disc 26 faces upward, and there are two second suction discs 26; the lower end surface of the connecting plate 25 is provided with a connecting ear, one end of the transmission rod 28 is hinged to the connecting ear of the connecting plate 25, and the other end is hinged to the eccentric hole 271 of the rotating disk 27; the center of the rotating disk 27 is fixed to the driving shaft 210, the driving shaft 210 is connected to the frame through a bearing, and the driving shaft 210 is connected to the output end of the second motor 29 through a coupling to transmit power.

[0027] When the lower suction box mechanism 2 is working, the second motor 29 drives the rotating disk 27 to rotate, and the rotating disk 27, the transmission rod 28 and the movable plate 23 form a crank slider mechanism, which drives the movable plate 23 to move back and forth through the transmission rod 28, and the second suction disk 26 is lifted and lowered by the lifting and adjusting cylinder 24; when sucking the box, the movable plate 23 is located on the farther side, and then the second suction disk 26 rises to suck the carton, and after sucking, the rotating disk 27 rotates to drive the movable plate 23 to move; when resetting, the second suction disk 26 descends, and the rotating disk 27 drives the movable plate 23 to move to the farther side.

[0028] When the high-speed unpacking device of a carton forming machine is working, the folded carton is placed on the material transfer track 3, the right side of the bottom end of the carton is sucked by the second suction disk 26, and the left side of the upper end of the carton is sucked by the first suction disk 112, and then the upper unpacking mechanism 1 and the lower suction mechanism 2 work at the same time, the second suction disk 26 drives the bottom surface of the carton to translate, and the first suction disk 112 drives the upper end surface of the carton to move in a circular trajectory, with both lifting and rightward movement to realize the action of opening the carton, and the two first suction disks 112 are used alternately, which is more efficient.

[0029] A high-speed unpacking device for a carton forming machine solves the problem that the carton forming speed is slow and difficult to further improve. By setting a rotating upper unpacking mechanism 1, two first suction discs 112 work in a cycle, which can double the unpacking speed, and the mechanism is symmetrically arranged about the central axis, and after further improving the working speed, the vibration stability of the mechanism is also better and the noise is small; the fixing points of the unpacking action are the bottom and the top, and compared with the fixing method of the bottom and the side, the stability of the unpacking is improved and the box body is not easy to shake; the horizontal structure of the unpacking device is compact and convenient to be arranged in the carton forming assembly line; because the upper unpacking mechanism rotates a whole circle, the layout of the pneumatic pipeline adopts a hollow component design, as a part of the gas pipeline, it can effectively avoid the problem of air pipe winding and knotting.

Claims

1. A high-speed unpacking device for a carton forming machine, characterized in that: The device comprises an upper box opening mechanism (1), a lower box suction mechanism (2) and a material transfer track (3); the material transfer track (3) is horizontally connected and installed on a frame, a flat box blank (401) is arranged on the material transfer track (3), the upper box opening mechanism (1) is located above the material transfer track (3), and the lower box suction mechanism (2) is located below the material transfer track (3); the lower box suction mechanism (2) is used to suck the bottom surface of the carton and perform traction, and the upper box opening mechanism (1) is used to suck the top surface of the carton and perform a box opening operation to convert it into a three-dimensional carton (402); The upper opening mechanism (1) comprises a motor mounting plate (11), a first motor (12), a connecting sleeve (13), a central sun sprocket (14), an output shaft (15), a main planetary carrier (161), a secondary planetary carrier (162), a planetary sprocket (17), a tension wheel assembly (18), a chain (19), an output shaft (110), an air disc connecting piece (111) and a first air suction disc (112); the first motor (12) is fixedly arranged on the motor mounting plate (11), and the output shaft (15 ) is arranged at the output part of the first motor (12); one end of the connecting sleeve (13) is connected to the motor mounting plate (11), and the other end is fixedly connected to the central sun sprocket (14); the output shaft (15) is located inside the connecting sleeve (13); the end of the output shaft (15) is provided with a keyway, the central part of the main planet carrier (161) is provided with a keyway hole (163), the output shaft (15) is fixedly connected to the main planet carrier (161), and the auxiliary planet carrier (162) is fixedly connected to the main planet carrier (161) are fixedly connected, the output shaft (15) is rotationally connected to the auxiliary planet carrier (162); the planetary sprocket (17) is fixedly connected to the output shaft (110), and the planetary sprocket (17) is located at both ends of the planet carrier; the planetary sprocket (17) and the central sun sprocket (14) have the same size and specification; the planetary sprocket (17) and the central sun sprocket (14) are driven by a chain (19); the output shaft (110) is connected to the main planet carrier (164) through a horizontal bearing (164). 1), one end of the output shaft (110) is provided with a fan-shaped connecting piece for connection, the other end is provided with an air intake valve, and a through hole is provided at the center of the output shaft (110); the first air intake disc (112) is fixedly arranged on the air disc connecting piece (111); the installation angle between the air disc connecting piece (111) and the output shaft (110) can be adjusted, and the air disc connecting piece (111) is located vertically; the main planet carrier (161) is provided with an adjustment groove (165) for adjusting the position of the output shaft (110); When the upper opening mechanism (1) is in operation, the first motor (12) drives the output rotating shaft (15) to rotate, and the output rotating shaft (15) drives the main planet carrier (161) to rotate. When the planet carrier rotates, since the central sun sprocket (14) is fixed in position and is constrained by the internal chain drive, the position of the air disc connecting piece (111) is always kept vertical and performs circular rotation in a vertical plane; The lower suction box mechanism (2) comprises a base frame (21), a slide rail assembly (22), a movable plate (23), a lifting and adjusting cylinder (24), a connecting plate (25), a second suction plate (26), a rotating plate (27), a transmission rod (28), a second motor (29) and a driving shaft (210); the base frame (21) is connected to the frame, and both ends of the movable plate (23) are movably connected to the base frame (21) through the slide rail assembly (22); the upper end surface of the movable plate (23) is provided with a lifting and adjusting cylinder (24), and the second suction plate (26) is provided with a lifting and adjusting cylinder (24). The air disc (26) is installed on the telescopic end of the lifting and adjusting cylinder (24) through a connecting plate (25); a connecting ear is provided on the lower end surface of the movable plate (23); one end of the transmission rod (28) is hinged to the connecting ear of the movable plate (23), and the other end is hinged to the eccentric hole (271) of the rotating disc (27); the center of the rotating disc (27) is fixed to the driving shaft (210), the driving shaft (210) is connected to the frame through a bearing, and the driving shaft (210) is connected to the output end of the second motor (29) through a coupling.

2. A high-speed box opening device for a carton forming machine according to claim 1, characterized in that: The suction end of the second air suction disc (26) faces upward, and a total of two second air suction discs (26) are provided.

3. The high-speed box opening device of a carton forming machine according to claim 1, characterized in that: The central sun sprocket (14) is a double sprocket.

4. The high-speed box opening device of a carton forming machine according to claim 1, characterized in that: The planet carrier is provided with a tensioning wheel assembly (18) for tensioning the chain.

5. The high-speed box opening device of a carton forming machine according to claim 1, characterized in that: The air disk connecting piece (111) is folded, the vertical portion is a fan-shaped piece connected to the end of the output shaft (110), and the horizontal portion is fixed to the first air suction disk (112).

6. The high-speed box opening device of a carton forming machine according to claim 1, characterized in that: The first air suction plate (112) is located at an upper position between the two material transfer tracks (3).

7. The high-speed box opening device of a carton forming machine according to claim 1, characterized in that: The two planetary sprockets (17) are symmetrical about the center of the central sun sprocket (14).

8. The high-speed box opening device of a carton forming machine according to claim 1, characterized in that: The suction end of the first suction disc (112) is provided with a bellows.

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