Packaging machine ton bag automatic opening device with up-down insertion type hooks

Abstract

The utility model relates to the technical field of packaging machines, in particular to a packaging machine ton bag automatic opening device with vertical insertion type hooks. Comprising a bag opening rack used for containing a bag body, a bag body containing platform arranged at the upper end of the bag opening rack, a bag taking lifting mechanism arranged above the bag body containing platform, and a suction cup assembly arranged at the lower end of the bag taking lifting mechanism and used for sucking the upper surface of the bag body. The plurality of vacuum suction cups are arranged on the suction cup assembly and used for sucking the upper surface of a bag body, and the plurality of vacuum suction cups are arranged on the bag body placing platform and used for sucking the lower surface of the bag body; the suction cup assembly is provided with an upper hook which is used for being inserted into the bag opening and hooking the upper side face of the interior of the bag opening after the bag opening of the bag body is opened, and the bag body containing platform is provided with a lower hook which is used for being inserted into the bag opening and hooking the lower side face of the interior of the bag opening after the bag opening of the bag body is opened. The bag opening device improves the success rate of bag opening.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, in particular to an automatic bag opening device for packaging machines with upper and lower inserted hooks. Background Art

[0002] At present, the ton bag packaging machines on the market are mainly semi-automatic ton bag packaging machines. During operation, manual bag picking, bag opening and bag hanging are required in advance. After the bags are hung on the packaging machine, the packaging machine will automatically add quantitative materials. After the adding is completed, the filled ton bag will be transferred to the conveyor and then sent to the next workstation for bag opening closing.

[0003] In response to the above problems, our company has developed a fully automatic packaging machine for solid fluids and applied for a patent. The fully automatic packaging machine for solid fluids can realize fully automatic operations such as bag taking, bag opening, bagging, bag clamping, weighing, loading, sealing, and dust removal. At present, the invention patents related to fully automatic packaging machines for solid fluids that have been authorized include: an invention patent for a composite weighing and packaging method for a fully automatic packaging machine for solid fluids with an authorization announcement number of CN116534316B, and an invention patent for a fully automatic packaging machine for solid fluids and an automatic bagging and packaging method with an authorization announcement number of CN 116424652 B.

[0004] However, the above patent still has the following aspects that need further improvement: It is easy to slide and fall during the opening process, and the success rate is low. Utility Model Content

[0005] In order to solve the above problems, the utility model proposes an automatic bag opening device for a packaging machine with upper and lower inserted hooks, aiming to improve the success rate of bag opening. The specific technical solution is as follows:

[0006] A packaging machine ton bag automatic bag opening device with upper and lower insertion hooks, comprising a bag opening frame for placing bag bodies, a bag placing platform arranged at the upper end of the bag opening frame, a bag taking and lifting mechanism arranged above the bag placing platform, a suction cup assembly arranged at the lower end of the bag taking and lifting mechanism for sucking the upper surface of the bag body, a number of vacuum suction cups arranged on the suction cup assembly for sucking the upper surface of the bag body, and a number of vacuum suction cups arranged on the bag placing platform for sucking the lower surface of the bag body; wherein the suction cup assembly is also provided with an upper hook for inserting into the bag opening after the bag opening of the bag body is opened and hooking the upper side surface of the bag opening, and the bag placing platform is also provided with a lower hook for inserting into the bag opening after the bag opening of the bag body is opened and hooking the lower side surface of the bag opening.

[0007] In the utility model, the suction cup assembly comprises a suction cup mounting plate, and the suction cup mounting plate is provided with the plurality of vacuum suction cups.

[0008] In the utility model, a first rotating cylinder is arranged at the upper end of the suction cup mounting plate, and the upper hook is arranged on the rotating rod body of the first rotating cylinder and can rotate together with the rotating rod body of the first rotating cylinder.

[0009] In the utility model, a window is opened on the bag placing platform, and a second rotating cylinder is arranged at the lower end of the bag placing platform near the window, and the lower hook is arranged on the rotating rod body of the second rotating cylinder and can rotate with the rotating rod body of the second rotating cylinder.

[0010] Preferably, the upper hook is a C-shaped grab hook, and when the rotating rod body of the first rotating cylinder rotates, the hook head of the C-shaped grab hook serving as the upper hook is driven to rotate to a position below the suction cup mounting plate to hook the upper side surface inside the bag opening.

[0011] Preferably, the lower hook is a C-shaped grab hook, and when the rotating rod of the second rotating cylinder rotates, the hook head of the C-shaped grab hook serving as the lower hook passes through the window and rotates to a position above the bag body placement platform to hook the lower side surface inside the bag opening.

[0012] Preferably, the bag placing platform is also provided with a photoelectric sensing switch for sensing whether a bag is placed on the bag placing platform.

[0013] Preferably, the bag taking and lifting mechanism is a lifting cylinder, and the suction cup assembly is fixed to the lower end of the piston rod of the lifting cylinder.

[0014] In the utility model, a cross beam is provided at the lower end of the piston rod of the lifting cylinder, a first cantilever is provided downwardly at one end of the cross beam, and a second cantilever is provided downwardly at the other end of the cross beam, and the suction cup mounting plate on the suction cup assembly includes a first suction cup mounting plate fixed at the lower end of the first cantilever and a second suction cup mounting plate fixed at the lower end of the second cantilever, and the vacuum suction cup is respectively provided on the first suction cup mounting plate and the second suction cup mounting plate.

[0015] Preferably, the front ends of the hook heads of the upper hook and the lower hook are respectively provided with horizontal knitting needles for abutting against the inner side surface of the bag opening.

[0016] In the utility model, a movable frame is arranged above the bag body placement platform, and the lifting cylinder is arranged on the movable frame.

[0017] In the utility model, the vacuum suction cup is a multi-layer buffer suction cup.

[0018] The operation method of opening ton bags is as follows:

[0019] The bag body as a ton bag is transported to the top of the bag body placement platform until it is sensed by the photoelectric sensing switch on the bag body placement platform. After the control system of the packaging machine obtains the sensing information of the photoelectric sensing switch, it stops transporting the ton bag. Then the control system drives the piston rod of the lifting cylinder to move downward and places the ton bag on the bag body placement platform. After it is in place, the vacuum suction cup on the bag body placement platform opens to suck the lower surface of the bag body. During this process, a number of vacuum suction cups sucking the upper surface of the bag body are always in the open state. Then the control system of the packaging machine drives the piston rod of the lifting cylinder to move upward, adjusts the upward speed of the piston rod through the throttle valve, thereby initially opening the bag mouth, and then drives the first rotary cylinder and the second rotary cylinder to move, and the upper hook and the lower upper hook quickly hang the inner side of the initially opened bag mouth respectively, and then the piston rod of the lifting cylinder continues to move upward to a certain height, thereby completely opening the bag mouth.

[0020] The beneficial effects of the utility model are:

[0021] First, the utility model is an automatic bag opening device for a packaging machine ton bag with upper and lower inserted hooks, wherein an upper hook and a lower hook are respectively arranged on a suction cup assembly and a bag body placing platform. In the initial bag opening stage relying on the suction cup, the inner side of the bag opening is hooked by the upper hook and the lower hook, thereby greatly improving the success rate of bag opening.

[0022] Secondly, the utility model is an automatic bag opening device for ton bags of a packaging machine with upper and lower inserted hooks. During the bag opening process, the upward movement speed of the piston rod is adjusted by a throttle valve, which can prevent the bag mouth from slipping when the multi-layer buffer suction cups are stretched straight due to the excessively fast bag opening speed, thereby further improving the reliability of bag opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of an automatic bag opening device for a packaging machine with upper and lower plug-in hooks;

[0024] Figure 2 yes Figure 1 A partial enlarged view of

[0025] Figure 3 The present invention is a structural schematic diagram of a second rotating cylinder being arranged at the lower end of a bag body placement platform.

[0026] In the figure: 1. bag opening frame, 2. bag body, 3. bag body placement platform, 4. bag taking lifting mechanism, 5. suction cup assembly, 6. vacuum suction cup, 7. upper hook, 8. lower hook, 9. suction cup mounting plate, 10. first rotary cylinder, 11. window, 12. second rotary cylinder, 13. photoelectric sensor switch, 14. crossbeam, 15. first cantilever, 16. second cantilever, 17. first suction cup mounting plate, 18. second suction cup mounting plate, 19. horizontal needle. DETAILED DESCRIPTION

[0027] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0028] like Figures 1 to 3 The figure shows an embodiment of the utility model of an automatic bag opening device for a packaging machine with upper and lower inserted hooks, comprising a bag opening frame 1 for placing a bag body 2, a bag body placing platform 3 arranged at the upper end of the bag opening frame 1, a bag taking and lifting mechanism 4 arranged above the bag body placing platform 3, a suction cup assembly 5 arranged at the lower end of the bag taking and lifting mechanism 4 for sucking the upper surface of the bag body 2, a number of vacuum suction cups 6 arranged on the suction cup assembly 5 for sucking the upper surface of the bag body 2, and a number of vacuum suction cups 6 arranged on the bag body placing platform 3 for sucking the lower surface of the bag body 2; wherein, the suction cup assembly 6 is also provided with an upper hook 7 for inserting into the bag opening after the bag opening of the bag body 2 is opened and hooking the upper side surface of the bag opening, and the bag body placing platform 3 is also provided with a lower hook 8 for inserting into the bag opening after the bag opening of the bag body 2 is opened and hooking the lower side surface of the bag opening.

[0029] In this embodiment, the suction cup assembly 5 includes a suction cup mounting plate 9 , and the suction cup mounting plate 9 is provided with the plurality of vacuum suction cups 6 .

[0030] In this embodiment, a first rotating cylinder 10 is disposed at the upper end of the suction cup mounting plate 9 , and the upper hook 7 is disposed on the rotating rod body of the first rotating cylinder 10 and can rotate together with the rotating rod body of the first rotating cylinder 10 .

[0031] In this embodiment, a window 11 is opened on the bag body placing platform 3, and a second rotating cylinder 12 is arranged at the lower end of the bag body placing platform 3 near the window 11, and the lower hook 8 is arranged on the rotating rod body of the second rotating cylinder 12 and can rotate together with the rotating rod body of the second rotating cylinder 12.

[0032] Preferably, the upper hook 7 is a C-shaped grab hook, and when the rotating rod body of the first rotating cylinder 10 rotates, the hook head of the C-shaped grab hook serving as the upper hook 7 is driven to rotate to a position below the suction cup mounting plate 9 to hook the upper side surface inside the bag opening.

[0033] Preferably, the lower hook 8 is a C-shaped grab hook, and when the rotating rod of the second rotating cylinder 12 rotates, the hook head of the C-shaped grab hook serving as the lower hook 8 passes over the window 11 and rotates to a position above the bag body placement platform 3, thereby hooking the lower side surface inside the bag opening.

[0034] Preferably, the bag placing platform 3 is also provided with a photoelectric sensing switch 13 for sensing whether a bag 2 is placed on the bag placing platform 3 .

[0035] Preferably, the bag taking lifting mechanism 4 is a lifting cylinder, and the suction cup assembly 5 is fixed to the lower end of the piston rod of the lifting cylinder.

[0036] In this embodiment, a cross beam 14 is provided at the lower end of the piston rod of the lifting cylinder, a first cantilever 15 is provided downwardly at one end of the cross beam 14, and a second cantilever 16 is provided downwardly at the other end of the cross beam 14. The suction cup mounting plate 9 on the suction cup assembly 5 includes a first suction cup mounting plate 17 fixed at the lower end of the first cantilever 15 and a second suction cup mounting plate 18 fixed at the lower end of the second cantilever 16. The vacuum suction cup 6 is respectively provided on the first suction cup mounting plate 17 and the second suction cup mounting plate 18.

[0037] Preferably, the front ends of the hook heads of the upper hook 7 and the lower hook 8 are respectively provided with horizontal needles 19 for abutting against the inner side of the bag opening.

[0038] In this embodiment, a movable frame (not shown in the figure) is arranged above the bag placing platform 3, and the lifting cylinder is arranged on the movable frame.

[0039] In this embodiment, the vacuum suction cup 6 is a multi-layer buffer suction cup.

[0040] The operation method of opening ton bags is as follows:

[0041] The bag body 2 as a ton bag is transported to the top of the bag body placement platform 3 until it is sensed by the photoelectric sensing switch 13 on the bag body placement platform 3. After the control system of the packaging machine obtains the sensing information of the photoelectric sensing switch 13, it stops transporting the ton bag. Then the control system drives the piston rod of the lifting cylinder to move downward and places the ton bag on the bag body placement platform 3. After it is in place, the vacuum suction cup 6 on the bag body placement platform 3 opens to suck the lower surface of the bag body. During this process, a number of vacuum suction cup assemblies 5 sucking the upper surface of the bag body are always in the open state. Then the control system of the packaging machine drives the piston rod of the lifting cylinder to move upward, adjusts the upward speed of the piston rod through the throttle valve, thereby initially opening the bag mouth, and then drives the first rotating cylinder 10 and the second rotating cylinder 12 to move, and the upper hook 7 and the lower upper hook 8 respectively quickly hang the inner side of the initially opened bag mouth, and then the piston rod of the lifting cylinder continues to move upward to a certain height, thereby completely opening the bag mouth.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An automatic bag opening device for a packaging machine with upper and lower plug-in hooks, characterized in that: It includes a bag opening frame for placing bags, a bag placing platform arranged at the upper end of the bag opening frame, a bag taking and lifting mechanism arranged above the bag placing platform, a suction cup assembly arranged at the lower end of the bag taking and lifting mechanism for sucking the upper surface of the bag, a number of vacuum suction cups arranged on the suction cup assembly for sucking the upper surface of the bag, and a number of vacuum suction cups arranged on the bag placing platform for sucking the lower surface of the bag; wherein the suction cup assembly is also provided with an upper hook for inserting into the bag opening after the bag opening of the bag is opened and hooking the upper side surface of the bag opening, and the bag placing platform is also provided with a lower hook for inserting into the bag opening after the bag opening of the bag is opened and hooking the lower side surface of the bag opening.

2. The automatic bag opening device for a packaging machine with upper and lower insertion hooks according to claim 1 is characterized in that: The suction cup assembly comprises a suction cup mounting plate, on which the plurality of vacuum suction cups are arranged.

3. The automatic bag opening device for a packaging machine with upper and lower plug-in hooks according to claim 2 is characterized in that: A first rotating cylinder is arranged at the upper end of the suction cup mounting plate, and the upper hook is arranged on the rotating rod body of the first rotating cylinder and can rotate together with the rotating rod body of the first rotating cylinder.

4. The automatic bag opening device for a packaging machine with upper and lower insertion hooks according to claim 1 is characterized in that: A window is provided on the bag placing platform, a second rotating cylinder is arranged at the lower end of the bag placing platform near the window, and the lower hook is arranged on the rotating rod body of the second rotating cylinder and can rotate together with the rotating rod body of the second rotating cylinder.

5. The automatic bag opening device for a packaging machine with upper and lower plug-in hooks according to claim 3 is characterized in that: The upper hook is a C-shaped grab hook. When the rotating rod body of the first rotating cylinder rotates, the hook head of the C-shaped grab hook serving as the upper hook is driven to rotate to a position below the suction cup mounting plate to hook the upper side surface inside the bag opening.

6. The automatic bag opening device for a packaging machine with upper and lower insertion hooks according to claim 4 is characterized in that: The lower hook is a C-shaped grab hook. When the rotating rod of the second rotating cylinder rotates, it drives the hook head of the C-shaped grab hook serving as the lower hook to pass through the window and rotate to a position above the bag body placement platform to hook the lower side surface inside the bag opening.

7. The automatic bag opening device for a packaging machine with upper and lower insertion hooks according to claim 1 is characterized in that: The bag placing platform is also provided with a photoelectric sensing switch for sensing whether a bag is placed on the bag placing platform.

8. The automatic bag opening device for a packaging machine with upper and lower insertion hooks according to claim 2 is characterized in that: The bag taking and lifting mechanism is a lifting cylinder, and the suction cup assembly is fixed to the lower end of the piston rod of the lifting cylinder.

9. The automatic bag opening device for a packaging machine with upper and lower insertion hooks according to claim 8 is characterized in that: A crossbeam is provided at the lower end of the piston rod of the lifting cylinder, a first cantilever is provided downwardly at one end of the crossbeam, and a second cantilever is provided downwardly at the other end of the crossbeam, and a suction cup mounting plate on the suction cup assembly includes a first suction cup mounting plate fixed at the lower end of the first cantilever and a second suction cup mounting plate fixed at the lower end of the second cantilever, and the vacuum suction cup is respectively provided on the first suction cup mounting plate and the second suction cup mounting plate.

10. The automatic bag opening device for a packaging machine with upper and lower insertion hooks according to claim 1 is characterized in that: The front ends of the hook heads of the upper hook and the lower hook are respectively provided with horizontal knitting needles for abutting against the inner side surface of the bag opening.

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