A bag holding mechanism for food grade packaging

Abstract

The present invention discloses a bag holding mechanism for food-grade packaging, comprising a cylinder driving mechanism, two groups of support shafts, a bag opening swing arm mounted on the support shaft, and a bag opening device, the cylinder driving mechanism comprising a cylinder, a driving swing arm, a connecting rod and a swing arm, one group of support shafts is an active support shaft and a first support shaft, the other group of support shafts is a passive support shaft and a second support shaft, the end hole of the driving swing arm is equipped with an active support shaft, the middle hole of the swing arm is equipped with a passive support shaft, the swing of the driving swing arm drives the active support shaft and the passive support shaft to follow; the first group of bag opening swing arms are mounted on the active support shaft and the first support shaft, the second group of bag opening swing arms are mounted on the passive support shaft and the second support shaft; the two groups of bag opening swing arms are connected to their respective bag opening devices through a linkage frame. The present invention can be suitable for packaging bags of more sizes, and the position of the swing arm can be adjusted according to actual conditions, and can ensure that the bag mouth is neat after the packaging bag is filled, and ensure the smooth progress of the packaging process.

Description

Technical Field

[0001] The invention relates to a bag holding mechanism, in particular to a bag holding mechanism for food-grade packaging. Background Art

[0002] In the actual production process, the packaging bags need to be sealed by a sealing machine after being filled. However, the openings of the packaging bags are not neat. When sealing, the packaging bags are likely to get stuck in the sealing machine, and the bag holding is unstable. The bag holding mechanism is mostly fixed or hand-cranked, which is inconvenient to operate and can only be suitable for a single or a few different sizes of packaging bags. The width and thickness of the packaging bags cannot be adjusted at the same time. Different sizes of packaging bags require different bag holding mechanisms. The structure of the bag holding mechanism is relatively complex, and the processing and maintenance costs are high. Summary of the Invention

[0003] In order to solve the problem of uneven bag openings, the present invention provides a bag holding mechanism for food-grade packaging, which can adjust the position of the swing arm, facilitate bag opening, and ensure the neatness of the bag opening.

[0004] The present invention provides the following technical solutions:

[0005] A bag holding mechanism for food-grade packaging, comprising a cylinder driving mechanism, two groups of support shafts, a bag opening swing arm mounted on the support shaft, and a bag opening device, wherein the cylinder driving mechanism comprises a cylinder, a driving swing arm, a connecting rod, and a passive swing arm, wherein the cylinder is movably connected to the connecting rod via the driving swing arm, and the connecting rod is movably connected to the passive swing arm; both ends of the two groups of support shafts are fixed between a packaging base and a packaging tailstock, wherein one group of support shafts is an active support shaft and a first support shaft, and the other group of support shafts is a passive support shaft and a second support shaft, wherein an active support shaft is mounted in an end hole of the driving swing arm, and a passive support shaft is mounted in a middle hole of the passive swing arm, and the swing of the driving swing arm drives the active support shaft and the passive support shaft to follow;

[0006] A first set of bag opening swing arms is installed on the active support shaft and the first support shaft, and a second set of bag opening swing arms is installed on the passive support shaft and the second support shaft;

[0007] The two sets of bag opening swing arms are connected to their respective bag opening devices through a linkage frame.

[0008] Furthermore, the bag opening device includes a bag opening pressure wheel group, a bag opening frame and an air source pipe interface. The front end of the bag opening pressure wheel group is connected to the bag opening frame, and the bag opening pressure wheel group is connected to the external air source pipe interface.

[0009] Furthermore, the bag opening and pressing wheel assembly is a suction cup with gas passing through it to adsorb the bag opening.

[0010] Furthermore, bag-holding swing arms are installed on both sets of support shafts, the upper ends of the bag-holding swing arms are hinged on the support shafts, the lower ends of the bag-holding swing arms are connected to the connecting plates through swing arm connecting blocks, and adjacent connecting plates are connected through round rods, and rubber-coated fixing frames are installed on the round rods, and the upper and lower positions of the round rods in the grooves of the connecting plates are adjustable.

[0011] Furthermore, the end of the piston rod of the cylinder is hinged to one end of the driving swing arm, a middle point on the driving swing arm is hinged to the connecting rod, the end of the connecting rod is hinged to one end of the passive swing arm, and the other end of the passive swing arm is fixed to the rear seat of the cylinder.

[0012] Furthermore, the active support shaft and the first support shaft are arranged in parallel, and the passive support shaft and the second support shaft are arranged in parallel.

[0013] Furthermore, the swing arm connecting block is connected to the double bag holding hand assembly on both sides, and the double bag holding hand assembly is used to hold and support the packaging bag that has been filled with materials.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. It adopts a reliable mechanical structure. The cylinder action drives the bag opening swing arms on both sides to rotate, so that the position of the bag opening swing arms can be adjusted, thereby driving the bag opening pressure wheel group and bag opening frame on both sides of the bag opening device to open and close the bag. The bag opening pressure wheel group is a suction cup, which sucks the bag opening open on both sides at the same time to complete the bag opening action;

[0016] 2. After the packaging bag is filled, the cylinder closes the piston rod, which drives the bag holding swing arms on both sides to rotate inward, driving the round rods on both sides to push the rubber bag fixing frame to close, thereby holding the bag opening position. The upper and lower positions of the round rods in the grooves of the connecting plate can be adjusted appropriately according to the actual bag opening position, which can be suitable for packaging bags of various sizes. The swing arm position can be adjusted according to actual conditions, which can ensure that the bag opening is neat after filling and ensure the smooth progress of the packaging process.

[0017] The present invention ensures stable operation of the mechanism and can be adjusted to various sizes and shapes of food packaging bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 Schematic diagram of the cylinder drive mechanism of the present invention.

[0020] Figure 3 It is the front view of the present invention.

[0021] Figure 4 It is a top view of the present invention.

[0022] Figure 5 It is a side view of the present invention.

[0023] Figure 6 This is a schematic diagram of the bag holding mechanism of the present invention when it is opened.

[0024] In the figure: 1. connecting rod; 2. bag opening device, 201. bag opening pressure wheel group; 202. bracket; 203. air source pipe interface; 3. linkage frame; 4. active support shaft; 5. passive support shaft; 6. air pipe; 7. double bag holding hand assembly; 8. rubber-wrapped fixing frame; 9. first set of bag opening swing arms; 10. second set of bag opening swing arms; 11. bag holding swing arm; 12. round rod; 13. baffle, 131. notch; 14. packaging tailstock; 15. packaging base; 16. driving swing arm; 17. straight-through pipe; 18. cylinder; 181. piston rod; 19. long air pipe; 20. passive swing arm; 21. first support shaft, 22. second support shaft; 23. swing arm connecting block. Implementation Method

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-6 The present invention provides a bag holding mechanism for food-grade packaging, comprising a cylinder driving mechanism, two sets of support shafts, a bag opening swing arm mounted on the support shafts, and a bag opening device.

[0027] The cylinder drive mechanism includes a cylinder 18 , a driving swing arm 16 , a connecting rod 1 and a swing arm 20 . The cylinder 18 is movably connected to the connecting rod 1 through the driving swing arm 16 , and the connecting rod 1 is movably connected to the passive swing arm 20 .

[0028] The end of the piston rod 181 of the cylinder 18 is hinged to one end of the driving swing arm 16, and a middle point on the driving swing arm 16 is hinged to the connecting rod 1. The end of the connecting rod 1 is hinged to one end of the passive swing arm 20, and the other end of the passive swing arm 20 is fixed to the rear seat of the cylinder 18.

[0029] The piston rod 181 of the cylinder 18 moves, driving the driving swing arm 16 to rotate, and the driving swing arm 16 rotates to drive the connecting rod 1 hinged thereto to move, and the connecting rod 1 is hinged to the passive swing arm 20.

[0030] The two ends of the two groups of support shafts are fixed between the packaging base 15 and the packaging tailstock 14. One group of support shafts is the active support shaft 4 and the first support shaft 21, and the other group of support shafts is the passive support shaft 5 and the second support shaft 22. The active support shaft 4 is installed in the end hole of the driving swing arm 16, and the passive support shaft 5 is installed in the middle hole of the passive swing arm 20. The swing of the driving swing arm 16 drives the active support shaft 4 and the passive support shaft 5 to follow.

[0031] The active support shaft 4 and the first support shaft 21 are arranged in parallel, and the passive support shaft 5 and the second support shaft 22 are arranged in parallel;

[0032] A first set of bag opening swing arms 9 is installed on the active support shaft 4 and the first support shaft 21 , and a second set of bag opening swing arms 10 is installed on the passive support shaft 5 and the second support shaft 22 .

[0033] The two sets of bag opening swing arms are connected to their respective bag opening devices 2 through a linkage frame 3. The bag opening device 2 includes a bag opening pressure wheel group 201, a bag opening frame 202 and an air source pipe interface 203. The front end of the bag opening pressure wheel group 201 is connected to the bag opening frame 202, and the bag opening pressure wheel group 201 is connected to the external air source pipe interface 203.

[0034] A long air pipe 19 is provided on the base 15 , and a straight pipe 17 is provided on the top of the long air pipe 19 for air intake. Both ends of the long air pipe 19 are connected to the air pipe 6 , and the air pipe 6 is connected to the air source pipe interface 203 through a hose.

[0035] The piston rod 181 of the cylinder 18 moves, driving the bag opening swing arms on both sides (the first group of bag opening swing arms 9 and the second group of bag opening swing arms 10) to rotate, thereby driving the bag opening pressure wheel group 201 and the bag opening frame 202 on the bag opening devices 2 on both sides to open and close the bag opening. The bag opening pressure wheel group 201 is a suction cup with ventilation gas inside to absorb the bag opening, and the bag openings on both sides are sucked open at the same time to complete the bag opening action.

[0036] The bag holding swing arm 11 is installed on both sets of support shafts. The upper end of the bag holding swing arm 11 is hinged on the support shaft. The lower end of the bag holding swing arm 11 is connected to the connecting plate 13 through the swing arm connecting block 23. The adjacent connecting plates 13 are connected by round rods 12. The rubber-coated fixing frame 8 is installed on the round rods 12. The upper and lower positions of the round rods 12 in the slots 131 of the connecting plate 13 can be appropriately adjusted according to the actual bag opening position.

[0037] The swing arm connecting block 23 is connected to the double bag holding hand assembly 7 on both sides. The double bag holding hand assembly 7 is used to hold and support the packaging bags that have been filled with materials, ensuring that the packaging bags filled with materials are as straight as possible during the conveying process, ensuring that the subsequent packaging process proceeds smoothly.

[0038] The process of holding the bag:

[0039] First, the cylinder 18 opens the piston rod 181, driving the bag opening arms on both sides to rotate outward, thereby driving the bag opening devices 2 on both sides to open the bag. After the bag is filled, the cylinder 18 closes the piston rod 181, driving the bag holding arms 11 on both sides to rotate inward, driving the round rods 12 on both sides to push the rubber bag fixing frame 8 closed, thereby holding the bag opening position. At the same time, the double bag holding hand assembly 7 holds the bottom of the bag filled with material and stably delivers it to the next station.

[0040] The present invention has:

[0041] Stability: Use reliable mechanical structure to ensure stable operation of the mechanism and reduce the probability of failure;

[0042] Hygiene: All parts that come into contact with food are made of food-grade materials and meet the hygiene standards of the food industry;

[0043] Flexibility: It can be adjusted to a wide range of food packaging bag sizes and shapes to suit most packaging needs.

[0044] The present invention is an efficient, stable and reliable food-grade packaging bag holding mechanism, which can be suitable for packaging bags of various sizes and can adjust the position of the swing arm according to actual conditions, so as to ensure that the bag opening is neat after the packaging bag is filled, and ensure the smooth progress of the packaging process; the structure is relatively simple, which reduces the processing and maintenance costs, adopts a reliable mechanical structure, ensures the stable operation of the mechanism, reduces the probability of failure, and can be adjusted according to a variety of food packaging bag sizes and shapes.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A bag holding mechanism for food-grade packaging, characterized in that: The invention comprises a cylinder driving mechanism, two groups of supporting shafts, a bag opening swing arm installed on the supporting shaft, and a bag opening device. The cylinder driving mechanism comprises a cylinder (18), a driving swing arm (16), a connecting rod (1) and a passive swing arm (20). The cylinder (18) is movably connected to the connecting rod (1) through the driving swing arm (16), and the connecting rod (1) is movably connected to the passive swing arm (20). The two ends of the two groups of supporting shafts are fixed between a packaging base (15) and a packaging tailstock (14). One group of supporting shafts is an active supporting shaft (4) and a first supporting shaft (21), and the other group of supporting shafts is a passive supporting shaft (5) and a second supporting shaft (22). The active supporting shaft (4) is installed in the end hole of the driving swing arm (16), and the passive supporting shaft (5) is installed in the middle hole of the passive swing arm (20). The swing of the driving swing arm (16) drives the active supporting shaft (4) and the passive supporting shaft (5) to follow. A first group of bag opening swing arms (9) are installed on the active support shaft (4) and the first support shaft (21), and a second group of bag opening swing arms (10) are installed on the passive support shaft (5) and the second support shaft (22); The two sets of bag opening swing arms are connected to their respective bag opening devices (2) via a linkage frame (3); A bag holding swing arm (11) is installed on both sets of support shafts, the upper end of the bag holding swing arm (11) is hinged on the support shaft, the lower end of the bag holding swing arm (11) is connected to the connecting plate (13) through a swing arm connecting block (23), adjacent connecting plates (13) are connected through a round rod (12), a rubber-coated fixing frame (8) is installed on the round rod (12), and the upper and lower positions of the round rod (12) in the notch of the connecting plate (13) are adjustable; The end of the piston rod (181) of the cylinder (18) is hinged to one end of the driving swing arm (16), a certain middle point on the driving swing arm (16) is hinged to the connecting rod (1), the end of the connecting rod (1) is hinged to one end of the passive swing arm (20), and the other end of the passive swing arm (20) is fixed to the rear seat of the cylinder (18).

2. The bag holding mechanism for food-grade packaging according to claim 1, characterized in that: The bag opening device (2) comprises a bag opening pressure wheel set (201), a bag opening frame (202) and an air source pipe interface (203); the front end of the bag opening pressure wheel set (201) is connected to the bag opening frame (202), and the bag opening pressure wheel set (201) is connected to an external air source pipe interface (203).

3. The bag holding mechanism for food-grade packaging according to claim 2, characterized in that: The bag opening pressing wheel set (201) is a suction cup, with gas passing through the interior to adsorb the bag opening.

4. The bag holding mechanism for food-grade packaging according to claim 1, characterized in that: The active support shaft (4) and the first support shaft (21) are arranged in parallel, and the passive support shaft (5) and the second support shaft (22) are arranged in parallel.

5. The bag holding mechanism for food-grade packaging according to claim 1, characterized in that: The swing arm connecting block (23) is connected to the double bag holding hand assemblies (7) on both sides, and the double bag holding hand assemblies (7) are used to hold and support the packaging bag that has been filled with materials.

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