A bag opening mechanism for food packaging

Abstract

The present invention provides a bag-opening mechanism for food packaging, which relates to the field of packaging machines. The bag-opening mechanism for food packaging includes two opposing support plates, the two support plates being arranged at the bottom ends of a connecting tube, a mounting plate being arranged on the upper side of the connecting tube, the mounting plate and the connecting tube being fixedly connected to a machine body, a container being fixedly connected to the upper side of the mounting plate, a valve assembly being arranged at the discharge port end of the container, a drive device for driving the valve assembly to open and close being arranged on one side of the machine body, the drive device driving the valve assembly via a connecting rod mechanism, the connecting rod mechanism being further connected to a connecting assembly, the action end of the connecting assembly acting between the two support plates to open the packaging bag, and a reset assembly being arranged between the two support plates. The packaging bag is opened while discharging, allowing snacks to enter the packaging bag, simplifying the snack packaging process steps and increasing the diversity of device linkage.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging machines, in particular to a bag opening mechanism for food packaging. Background Art

[0002] Snack packaging machines are used for quantitative weighing and packaging of peanuts, cashews, pistachios, walnuts and other nuts, pesticides, feed, additives, laundry detergent, salt, MSG, sugar, seeds, rice, pepper and other granular and powdered materials. Currently, the process of packaging mixed nuts is as follows: the nuts are conveyed to the electronic scale, and according to the quality display of the electronic scale, the excess nuts are returned and the shortage nuts are supplemented to achieve the target quality. The nuts that meet the quality requirements are then poured into the packaging bag, and the packaging bag is then sealed using a sealing device. Finally, the packaged nuts are sold.

[0003] During the snack packaging process, it is necessary to manually put the packaging bag on the snack discharge port of the packaging machine to receive a certain amount of snacks and then use the packaging machine to seal the packaging bag. The packaging efficiency of nuts is low and the labor cost is high. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a bag opening mechanism for food packaging, which opens the packaging bag while discharging the food, allowing snacks to enter the packaging bag and discharging the snacks in a quantitative manner.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a bag opening mechanism for food packaging, comprising two relatively arranged support plates, the two support plates are arranged at the bottom ends of the connecting tube, a mounting plate is provided on the upper side of the connecting tube, the mounting plate and the connecting tube are fixedly connected to the machine body, a container is fixedly connected to the upper side of the mounting plate, the container discharge port is arranged through the mounting plate, a valve assembly is provided at the discharge port end of the container, a driving device for driving the valve assembly to open and close is provided on one side of the machine body, the driving device drives the valve assembly through a connecting rod mechanism, the connecting rod mechanism is arranged on one side of the mounting plate, the connecting rod mechanism is also connected to a connecting assembly, the connecting assembly is arranged in the connecting tube, the action end of the connecting assembly acts between the two support plates, for acting on the two support plates to make them approach or move away from each other, so as to realize the opening of the packaging bag, and a reset assembly is provided between the two support plates.

[0006] Preferably, the valve assembly includes a rotating shaft, the outer wall of the rotating shaft is fixedly connected to a material baffle plate, the bottom side of the mounting plate is fixedly connected to mounting seats on both sides of the container discharge port, the rotating shaft is rotatably connected in the mounting seat, and the two material baffle plates are arranged opposite to each other.

[0007] Preferably, the connecting rod mechanism includes a driving rod, a first driven rod and a connecting rocker rod, one end of the driving rod is fixedly connected to the outer wall of a rotating shaft, one end of the first driven rod is fixedly connected to the outer wall of another rotating shaft, one end of the connecting rocker rod is hinged to the end of the first driven rod away from the rotating shaft, and the other end of the connecting rocker rod is hinged to one side of the driving rod, the end of the driving rod away from the rotating shaft is the action part of the driving device, and the output end of the driving device is configured to be detachably connected to the driving rod.

[0008] Preferably, the connecting rod mechanism also includes a second driven rod and a linkage rod, one end of the second driven rod is fixedly connected to the outer wall of the rotating shaft on the driving rod side, the second driven rod and the first driven rod are hinged with a linkage rod at one end away from the rotating shaft, one side of the linkage rod is fixedly connected to a guide rod, one end of the guide rod is slidably connected to a place on the machine body, and the connecting assembly is arranged on the outer wall of the guide rod.

[0009] Preferably, the connecting assembly includes a connecting main rod and a touch sub-rod, the top end of the connecting main rod is rotatably connected to the outer wall of the guide rod, the bottom end of the connecting main rod is provided with a threaded hole, the outer wall of the touch sub-rod is threadedly connected in the threaded hole, a slide is provided on the lower side of the connecting assembly, the slide is fixedly connected to the inner side of the support plate, the end of the touch sub-rod acts on the side wall of the slide, and the side walls of the connecting tube are provided with movable plates at the connecting assembly.

[0010] Preferably, the upper ends of the support plates are each provided with a slider, the bottom ends of the connecting tubes are correspondingly provided with a slide groove, and the two support plates are respectively slidably connected to the inner walls of the two slide grooves through the sliders.

[0011] Preferably, an action component is further provided between the connecting component and the slide seat, the action component is provided in the connecting tube, the action component includes an action rod, the action rod is slidably connected in the connecting tube, the outer wall of the action rod is fixedly connected to a fixed plate, one side of the fixed plate is fixedly connected to a second return spring, one end of the second return spring is fixedly connected to a place in the connecting tube, one end of the action rod is fixedly connected to an action member, the action member acts on the side wall of the slide seat, a weighing device is provided on one side of the machine body, and the weighing device is provided on the bottom side of the mounting plate.

[0012] Preferably, the reset assembly includes a fixing seat and a third reset spring, the fixing seat is fixedly connected to the inner side of the support plate, and both ends of the third reset spring are respectively fixedly connected to the side walls of the fixing seat on the inner sides of the two support plates.

[0013] Preferably, a limit spring is provided between the second driven rod and the linkage rod, and between the first driven rod and the linkage rod.

[0014] Preferably, one end of the rotating shaft is fixedly connected to a third driven rod, one end of the third driven rod is fixedly connected to a first return spring, and one end of the first return spring is fixedly connected to one side of the mounting plate.

[0015] Working principle: In specific application, in the initial state, snack materials are placed in the container, the driving device is separated from the connecting rod mechanism, and the connecting rod mechanism is acted on by the first return spring to make the two baffle plates in a horizontal state, so that the container opening is blocked by the two baffle plates; when discharging, the driving device acts on the connecting rod mechanism to drive the side shaft to rotate, thereby driving the second driven rod to rotate, and then driving the side baffle plate to rotate, and while the driving rod rotates, the other side shaft is driven to rotate through the connecting rocker rod and the first driven rod, thereby driving the two side baffle plates to open relatively, realizing the opening of the container discharge port, and then realizing unloading, and at the same time, through the second driven rod, The linkage rod and the guide rod enable the connecting rod mechanism to drive the connecting assembly to extend downward in the process of opening and closing the valve assembly. In the process of the connecting assembly extending downward through the action of the connecting rod mechanism, the bottom end contacts the slide seat, so that when the connecting assembly extends downward, the support plate is relatively separated by the action of the slide seat, thereby realizing the opening of the packaging bag, and then realizing the opening of the packaging bag while discharging, allowing snacks to enter the packaging bag, simplifying the snack packaging process steps. After one discharging is completed, the first return spring and the third return spring are set to reset the connecting rod mechanism and the two support plates to their initial state, and then a cycle is completed.

[0016] The present invention provides a bag opening mechanism for food packaging, which has the following beneficial effects:

[0017] 1. The present invention cooperates with the connecting rod mechanism and the connecting assembly to realize opening the packaging bag while discharging the material, so that the snacks enter the packaging bag, simplifying the snack packaging process steps and increasing the diversity of device linkage.

[0018] 2. The present invention uses a weighing device and a function component in combination to achieve quantitative discharge of snacks in the packaging bag, further simplifying the snack packaging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0021] Figure 3 is a cross-sectional view of the present invention;

[0022] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5Schematic diagram of the connecting rod mechanism structure of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the connecting rod mechanism of the present invention from another perspective;

[0025] Figure 7 It is a schematic structural diagram of the reset component of the present invention;

[0026] Figure 8 This is a schematic diagram of the second embodiment of the present invention.

[0027] Among them, 1, support plate; 101, slider; 102, slide seat; 2, connecting pipe; 201, movable plate; 202, slide groove; 3, mounting plate; 301, mounting seat; 4, material container; 5, valve assembly; 501, rotating shaft; 502, material blocking plate; 6, driving device; 7, connecting rod mechanism; 701, driving rod; 702, first driven rod; 703, connecting rocker; 704, second driven rod; 705, linkage rod; 706 , guide rod; 707, limit spring; 708, third driven rod; 709, first return spring; 8, connecting assembly; 801, connecting main rod; 802, threaded hole; 803, triggering auxiliary rod; 9, action assembly; 901, action rod; 902, fixing plate; 903, second return spring; 904, action member; 10, return assembly; 1001, fixing seat; 1002, third return spring; 11, weighing device. DETAILED DESCRIPTION

[0028] 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.

[0029] Example 1:

[0030] like Figure 1-7The cam 3 is provided with a plurality of support plates 1 for opening and closing the bag, and the support plates 1 are provided with a plurality of support plates 1 for opening and closing the bag. The support plates 1 are provided with a plurality of support plates 1 for opening and closing the bag. The support plates 1 are provided with a plurality of support plates 1 for opening and closing the bag. The support plates 1 are provided with a plurality of support plates 1 for opening and closing the bag. The support plates 1 are provided with a plurality of support plates 1 for opening and closing the bag.

[0031] Specifically, the driving device 6 drives the valve assembly 5 to move through the connecting rod mechanism 7, so that the valve assembly 5 opens and closes the discharge port of the container 4, and also drives the two support plates 1 to move relatively apart through the connecting assembly 8, so that the packaging bag is stretched open, so that the packaging bag is opened while discharging, allowing snacks to enter the packaging bag.

[0032] In a specific embodiment, the valve assembly 5 includes a rotating shaft 501, the outer wall of the rotating shaft 501 is fixedly connected to a material blocking plate 502, the bottom side of the mounting plate 3 is located on both sides of the discharge port of the container 4 and is fixedly connected to a mounting seat 301, the rotating shaft 501 is rotatably connected in the mounting seat 301, and the two material blocking plates 502 are arranged opposite to each other;

[0033] The two rotating shafts 501 are rotated respectively to control the folding of the two baffle plates 502, thereby realizing the opening and closing of the discharge port of the container 4, thereby performing the discharge operation on the snacks placed in the container 4.

[0034] In a specific embodiment, the connecting rod mechanism 7 includes a driving rod 701, a first driven rod 702 and a connecting rocker rod 703. One end of the driving rod 701 is fixedly connected to the outer wall of one rotating shaft 501, one end of the first driven rod 702 is fixedly connected to the outer wall of the other rotating shaft 501, one end of the connecting rocker rod 703 is hinged to the end of the first driven rod 702 away from the rotating shaft 501, and the other end of the connecting rocker rod 703 is hinged to one side of the driving rod 701. The end of the driving rod 701 away from the rotating shaft 501 is the action part of the driving device 6, and the output end of the driving device 6 is configured to be detachably connected to the driving rod 701.

[0035] Among them, the driving rod 701 in the connecting rod mechanism 7 is actuated by the driving device 6, so that it drives the side rotating shaft 501 to rotate, thereby driving the second driven rod 704 to rotate, and then driving the side baffle plate 502 to rotate. While the driving rod 701 rotates, it drives the other side rotating shaft 501 to rotate through the connecting rocker rod 703 and the first driven rod 702, thereby driving the two side baffle plates 502 to open relative to each other, realizing the opening of the discharge port of the container 4, and then realizing unloading.

[0036] In a specific embodiment, the connecting rod mechanism 7 further includes a second driven rod 704 and a linkage rod 705. One end of the second driven rod 704 is fixedly connected to the outer wall of the rotating shaft 501 on the driving rod 701 side. The second driven rod 704 and the first driven rod 702 are both hingedly connected to the linkage rod 705 at one end away from the rotating shaft 501. One side of the linkage rod 705 is fixedly connected to a guide rod 706. One end of the guide rod 706 is slidably connected to a place on the body. The connecting assembly 8 is provided on the outer wall of the guide rod 706.

[0037] The second driven rod 704 , the linkage rod 705 and the guide rod 706 are provided so that the connecting rod mechanism 7 can drive the connecting assembly 8 to extend downwards during the process of opening and closing the valve assembly 5 .

[0038] In a specific embodiment, the connecting assembly 8 includes a connecting main rod 801 and a triggering auxiliary rod 803. The top of the connecting main rod 801 is rotatably connected to the outer wall of the guide rod 706. The bottom of the connecting main rod 801 is provided with a threaded hole 802. The outer wall of the triggering auxiliary rod 803 is threadedly connected to the threaded hole 802. A slide 102 is provided on the lower side of the connecting assembly 8. The slide 102 is fixedly connected to the inner side of the support plate 1. The end of the triggering auxiliary rod 803 acts on the side wall of the slide 102. The side wall of the connecting pipe 2 is located at the connecting assembly 8 and is provided with a movable plate 201.

[0039] In the process of the connecting component 8 extending downward through the action of the connecting rod mechanism 7, the bottom end contacts the slide 102, so that when the connecting component 8 extends downward, the support plate 1 is relatively separated by the action of the slide 102, thereby realizing the opening of the packaging bag;

[0040] Furthermore, by providing the connecting main rod 801 and the triggering auxiliary rod 803, the length of the entire connecting assembly 8 can be adjusted by rotating the triggering auxiliary rod 803, thereby adjusting the opening distance between the two support plates 1, and further adjusting the device according to the specifications of the packaging bags to adapt to the opening of different packaging bags;

[0041] Furthermore, by providing the movable plate 201 , the length of the connecting assembly 8 can be adjusted by opening the movable plate 201 .

[0042] In a specific embodiment, the upper end of each support plate 1 is provided with a slider 101, and the bottom end of the connecting tube 2 is correspondingly provided with a slide groove 202, and the two support plates 1 are slidably connected to the inner walls of the two slide grooves 202 through the sliders 101;

[0043] The sliding direction of the support plate 1 , ie the opening direction, is guided and limited by the slider 101 and the sliding groove 202 .

[0044] In a specific embodiment, the reset assembly 10 includes a fixed seat 1001 and a third reset spring 1002. The fixed seat 1001 is fixedly connected to the inner side of the support plate 1, and the two ends of the third reset spring 1002 are respectively fixedly connected to the side walls of the fixed seat 1001 inside the two support plates 1;

[0045] The third reset spring 1002 provided in the reset assembly 10 allows the two support plates 1 to be reset after they are opened.

[0046] In a specific embodiment, a limit spring 707 is provided between the second driven rod 704 and the linkage rod 705 and between the first driven rod 702 and the linkage rod 705;

[0047] The limit spring 707 is provided to effectively prevent the second driven rod 704 and the linkage rod 705 as well as the first driven rod 702 and the linkage rod 705 from getting stuck when they are folded relative to each other during the operation of the connecting rod mechanism 7 .

[0048] In a specific embodiment, one end of the rotating shaft 501 is fixedly connected to the third driven rod 708, one end of the third driven rod 708 is fixedly connected to the first return spring 709, and one end of the first return spring 709 is fixedly connected to one side of the mounting plate 3;

[0049] The first return spring 709 is provided to assist in the return operation of the two baffle plates 502 after they are opened.

[0050] Example 2:

[0051] like Figure 8 As shown, this embodiment is basically the same as the above embodiment, except that:

[0052] An action component 9 is further provided between the connecting component 8 and the slide 102. The action component 9 is provided in the connecting tube 2. The action component 9 includes an action rod 901. The action rod 901 is slidably connected in the connecting tube 2. The outer wall of the action rod 901 is fixedly connected to a fixed plate 902. One side of the fixed plate 902 is fixedly connected to a second return spring 903. One end of the second return spring 903 is fixedly connected to a point in the connecting tube 2. One end of the action rod 901 is fixedly connected to an action member 904. The action member 904 acts on the side wall of the slide 102. A weighing device 11 is provided on one side of the machine body. The weighing device 11 is provided on the bottom side of the mounting plate 3.

[0053] The action component 9 provided between the connecting component 8 and the two support plates 1 separates the connecting component 8 from the support plates 1, effectively reducing the weight of the mechanical components connected to the mounting plate 3 while facilitating the weighing of the snacks in the container 4 with the weighing device 11.

[0054] Furthermore, in the present application, the connection part with the mounting plate 3 and the connection part with the connecting pipe 2 are separately provided, and the driving device 6 and the mechanism are also separately provided. By placing the weighing device 11 on the lower side of the mounting plate 3, when weighing the snacks in the container 4, the weight is removed by tare to obtain an accurate weight, which facilitates the quantitative discharge of the snacks.

[0055] At the same time, it should be noted that a certain gap is set at the connection between the connecting tube 2 and the connecting main rod 801, and even if the connecting main rod 801 contacts the connecting tube 2, its impact on the weight measured by the weighing device 11 will not exceed the positive and negative difference of the net content of the snack package.

[0056] 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-opening mechanism for food packaging, comprising two support plates (1) arranged opposite to each other, characterized in that: The two support plates (1) are arranged at the bottom end of the connecting tube (2), and a mounting plate (3) is arranged on the upper side of the connecting tube (2). The mounting plate (3) and the connecting tube (2) are both fixedly connected to the machine body. A container (4) is fixedly connected to the upper side of the mounting plate (3), and a discharge port of the container (4) is arranged through the mounting plate (3). A valve assembly (5) is arranged at the discharge port end of the container (4). A driving device (6) for driving the valve assembly (5) to open and close is arranged on one side of the machine body. The driving device (6) drives the valve assembly (5) through a connecting rod mechanism (7). The connecting rod mechanism (7) is arranged on one side of the mounting plate (3). The connecting rod mechanism (7) is also connected to a connecting assembly (8). The connecting assembly (8) is arranged in the connecting tube (2). The action end of the connecting assembly (8) acts between the two support plates (1) to act on the two support plates (1) to make them move closer to or farther away from each other so as to open the packaging bag. A reset assembly (10) is arranged between the two support plates (1). The valve assembly (5) includes a rotating shaft (501), the outer wall of the rotating shaft (501) is fixedly connected to a material blocking plate (502), the bottom side of the mounting plate (3) is located on both sides of the discharge port of the container (4) and is fixedly connected to a mounting seat (301), the rotating shaft (501) is rotatably connected in the mounting seat (301), and the two material blocking plates (502) are arranged opposite to each other; The connecting rod mechanism (7) comprises a driving rod (701), a first driven rod (702) and a connecting rocker (703), wherein one end of the driving rod (701) is fixedly connected to the outer wall of a rotating shaft (501), one end of the first driven rod (702) is fixedly connected to the outer wall of another rotating shaft (501), one end of the connecting rocker (703) is hinged to the end of the first driven rod (702) away from the rotating shaft (501), and the other end of the connecting rocker (703) is hinged to one side of the driving rod (701), the end of the driving rod (701) away from the rotating shaft (501) is the action part of the driving device (6), and the output end of the driving device (6) and the driving rod (701) are arranged to be detachably connected; The connecting rod mechanism (7) further comprises a second driven rod (704) and a linkage rod (705), one end of the second driven rod (704) being fixedly connected to the outer wall of the rotating shaft (501) on the driving rod (701), the second driven rod (704) and the first driven rod (702) being hingedly connected to the linkage rod (705) at one end away from the rotating shaft (501), one side of the linkage rod (705) being fixedly connected to a guide rod (706), one end of the guide rod (706) being slidably connected to a location of the machine body, and the connecting assembly (8) being arranged on the outer wall of the guide rod (706); The connecting assembly (8) includes a connecting main rod (801) and a touch auxiliary rod (803), the top end of the connecting main rod (801) is rotatably connected to the outer wall of the guide rod (706), the bottom end of the connecting main rod (801) is provided with a threaded hole (802), the outer wall of the touch auxiliary rod (803) is threadedly connected in the threaded hole (802), a slide seat (102) is provided on the lower side of the connecting assembly (8), the slide seat (102) is fixedly connected to the inner side of the support plate (1), the end of the touch auxiliary rod (803) acts on the side wall of the slide seat (102), and the side wall of the connecting pipe (2) is provided with a movable plate (201) at the connecting assembly (8); The upper ends of the support plates (1) are each provided with a slider (101), and the bottom ends of the connecting tubes (2) are correspondingly provided with a slide groove (202), and the two support plates (1) are respectively slidably connected to the inner walls of the two slide grooves (202) through the sliders (101); An action component (9) is further provided between the connecting component (8) and the slide (102), the action component (9) being provided in the connecting tube (2), the action component (9) comprising an action rod (901), the action rod (901) being slidably connected in the connecting tube (2), the outer wall of the action rod (901) being fixedly connected to a fixing plate (902), one side of the fixing plate (902) being fixedly connected to a second return spring (903), one end of the second return spring (903) being fixedly connected to a point in the connecting tube (2), one end of the action rod (901) being fixedly connected to an action member (904), the action member (904) acting on the side wall of the slide (102), a weighing device (11) being provided on one side of the machine body, the weighing device (11) being provided on the bottom side of the mounting plate (3).

2. A bag opening mechanism for food packaging according to claim 1, characterized in that: The reset assembly (10) comprises a fixed seat (1001) and a third reset spring (1002), wherein the fixed seat (1001) is fixedly connected to the inner side of the support plate (1), and the two ends of the third reset spring (1002) are respectively fixedly connected to the side walls of the fixed seat (1001) inside the two support plates (1).

3. The bag opening mechanism for food packaging according to claim 1, characterized in that: A limiting spring (707) is provided between the second driven rod (704) and the linkage rod (705), and between the first driven rod (702) and the linkage rod (705).

4. The bag opening mechanism for food packaging according to claim 1, characterized in that: One end of the rotating shaft (501) is fixedly connected to a third driven rod (708), one end of the third driven rod (708) is fixedly connected to a first return spring (709), and one end of the first return spring (709) is fixedly connected to one side of the mounting plate (3).

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