Food packaging paper bag taking and opening device

Abstract

The utility model provides a kind of food packaging paper bag taking and opening device, including bag feeding mechanism, opening bag mechanism;Bag feeding mechanism includes bag feeding part, paper bag storage tank;Bag feeding part is installed to the top of paper bag storage tank one end;Opening bag mechanism includes mounting bracket, two opening bag parts, link part, power part;Mounting bracket is fixed in the top of bag feeding part, link part is slidably installed on mounting bracket, two opening bag parts are symmetrically slidably connected link part, and side portion is slidably connected mounting bracket, power part can drive link part reciprocating movement along mounting bracket vertical direction.The utility model converts the up-down movement of link part into the left-right opening and closing movement of opening bag part, and the structure is simple and practical.Paper bags in paper bag storage tank are vertically sent one by one to opening bag mechanism by the rotation of bag feeding part, so that opening bag part clamps and adsorbs the paper bag vertically sent by bag feeding part when sliding to the middle of link part, and opening bag part opens the paper bag when sliding to both ends of link part, realizing the continuous conveying and opening of paper bag, and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of food packaging technology, and in particular to a bag opening device for food packaging paper bags. Background Technology

[0002] Food packaging is an integral part of food products and one of the major processes in the food industry. It protects food from biological, chemical, and physical damage during its journey from the factory to the consumer. It also helps maintain the stable quality of the food itself, facilitates consumption, and serves as the primary visual representation of the food, attracting consumers and possessing value beyond material cost.

[0003] Traditionally, food packaging relies primarily on manual labor. However, manual packaging suffers from low efficiency, requires a high level of skill, and is difficult to scale up. Currently, bag-packing machinery does exist on the market, mainly featuring rotary multi-station and linear multi-working-station layouts. These machines are relatively large and bulky, occupying significant workshop space, and their long working strokes result in low efficiency and productivity. Summary of the Invention

[0004] In order to solve the technical problems existing in the above-mentioned technologies, it is necessary to provide a bag-opening device for food packaging paper bags.

[0005] A bag-feeding and opening device for food packaging paper bags includes a bag-feeding mechanism and a bag-opening mechanism;

[0006] The bag feeding mechanism includes a bag feeding section and a paper bag storage slot; the bag feeding section is installed above one end of the paper bag storage slot, and when the bag feeding section rotates, it conveys the paper bags in the paper bag storage slot one by one to the bag opening mechanism.

[0007] The bag opening mechanism includes a mounting frame, a bag opening section, a connecting section, and a power unit. The mounting frame is fixed above the bag feeding section. The connecting section is slidably mounted on the mounting frame. There are two bag opening sections, which are symmetrically slidably mounted on the connecting section and slidably connected to the mounting frame on their sides. The power unit can drive the connecting section to move back and forth longitudinally along the mounting frame, so that the connecting section drives the bag opening section to slide synchronously towards the middle of the connecting section or towards both ends of the connecting section. This achieves the following: when the bag opening section slides towards the middle of the connecting section, it clamps and absorbs the paper bag vertically conveyed upward by the bag feeding section; when the bag opening section slides towards both ends of the connecting section, it opens the opening end of the paper bag.

[0008] Preferably, one end of the top of the paper bag storage slot has a guide slope that slopes towards the bottom of the paper bag storage slot, and a rubber seat is provided on the guide slope. The bag feeding part includes a feeding assembly and a guiding conveying assembly. The guiding conveying assembly is rotatably mounted above the guide slope, and the feeding assembly is rotatably mounted above the paper bag storage slot. When the feeding assembly rotates, it feeds the paper bags in the paper bag storage slot one by one along the guide slope to the guiding conveying assembly. When the feeding assembly rotates, it synchronously drives the guiding conveying assembly to transport the paper bags to the bag opening mechanism.

[0009] Preferably, the feeding assembly includes a rotating shaft rotatably mounted above the paper bag storage slot and a bag-rubbing cam fixed on the rotating shaft. When the rotating shaft rotates, it can drive the bag-rubbing cam to feed the uppermost paper bag in the paper bag storage slot toward the guide slope.

[0010] Preferably, the guiding and conveying assembly includes a first roller, a second roller, and a redirecting wheel; the first roller and the second roller are rotatably mounted above the guide slope along the axial direction of the rotating shaft, and there is a gap between the first roller and the second roller that allows the paper bag to pass through. The first roller rotates synchronously with the rotating shaft, and the first roller can drive the second roller to rotate. The redirecting wheel is rotatably mounted at the top of the paper bag storage slot and located below the second roller, so that the paper bag conveyed on the guide slope is guided by the redirecting wheel into the gap between the first roller and the second roller, and the paper bag is clamped and conveyed upward by the rotational cooperation between the first roller and the second roller.

[0011] Preferably, the ends of the first and second rollers are fixedly equipped with meshing transmission gears.

[0012] Preferably, the bag opening mechanism further includes a transverse section that can drive the mounting frame to reciprocate along the horizontal direction and perpendicular to the axis of the guide conveying assembly.

[0013] Preferably, the transverse movement part includes a mounting plate and a lead screw; the mounting plate is horizontally fixed above the mounting frame, and two parallel guide rails arranged perpendicular to the axis of the guide conveying assembly are fixed on the mounting plate. A slider fixedly connected to the mounting frame is slidably mounted on the guide rails. The lead screw is rotatably mounted on the mounting plate along the arrangement direction of the guide rails. The lead screw is threadedly connected to the upper end of the mounting frame, so that when the lead screw rotates, it can drive the mounting frame to reciprocate along the guide rails.

[0014] Preferably, the mounting bracket is provided with a longitudinal track for longitudinal sliding of the connecting part, the upper end of the connecting part is connected to the power unit, and the connecting part has a sliding groove with a figure-eight structure.

[0015] Preferably, the mounting frame is provided with a transverse track for the bag opening section to slide laterally, the upper ends of the two bag opening sections are respectively slidably connected to the slide groove, and the sides are slidably connected to the transverse track, so that when the connecting part moves up and down, it can drive the bag opening section to move along the transverse track; the lower end of the bag opening section has an adsorption head to hold the paper bag.

[0016] Preferably, the bottom of the paper bag storage slot is provided with a support plate for supporting the paper bag, a spring is installed between the support plate and the bottom of the paper bag storage slot, and limiting plates are provided on the inner walls of both sides of the paper bag storage slot to limit the upward extreme displacement of the support plate.

[0017] Compared with existing technologies, the food packaging paper bag opening device provided by this utility model includes a bag feeding mechanism and an opening mechanism. The bag feeding mechanism includes a bag feeding section and a paper bag storage slot. The bag feeding section is installed above one end of the paper bag storage slot. The opening mechanism includes a mounting frame, an opening section, a connecting section, and a power unit. The mounting frame is fixed above the bag feeding section, and the connecting section is slidably installed on the mounting frame. There are two opening sections, which are symmetrically slidably installed on the connecting section and slidably connected to the mounting frame on their sides. The power unit can drive the connecting section to reciprocate longitudinally along the mounting frame. This utility model converts the up-and-down movement of the connecting section into the left-and-right opening and closing movement of the opening section, replacing a complex multi-action mechanism, resulting in fewer parts, lower cost, simple and practical structure, and easy maintenance. As the bag feeding section rotates, it vertically conveys the paper bags in the storage slot one by one to the bag opening mechanism. When the connecting section drives the bag opening section to slide synchronously towards the middle or towards both ends of the connecting section, the bag opening section clamps and absorbs the paper bags vertically conveyed by the bag feeding section when it slides towards the middle of the connecting section, and opens the opening end of the paper bags when it slides towards both ends of the connecting section. This achieves continuous conveying and continuous opening of paper bags, greatly improving work efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This utility model Figure 1 A schematic diagram of the cross-sectional structure of AA.

[0021] Figure 3 This utility model Figure 1 Schematic diagram of the cross-sectional structure of BB.

[0022] Figure 4 This utility model Figure 1 A structural diagram from another angle.

[0023] Figure 5 This is a schematic diagram of the bag opening mechanism of this utility model.

[0024] Figure 6 This utility model Figure 5 A structural diagram from the first angle.

[0025] Figure 7 This utility model Figure 5 A structural diagram from a second angle.

[0026] In the figure: bag feeding section 01, conveying assembly 11, rotating shaft 111, bag rubbing cam 112, guiding conveying assembly 12, first rotating roller 121, second rotating roller 122, redirecting wheel 123, transmission gear 124, paper bag storage slot 02, guide slope 21, rubber seat 22, support plate 23, spring 24, limit plate 25, mounting frame 03, longitudinal track 31, transverse track 32, bag opening section 04, suction head 41, sliding rod 42, connecting part 05, slide groove 51, power part 06, transverse movement part 07, mounting plate 71, lead screw 72, guide rail 73, slider 74, bag feeding mechanism 100, bag opening mechanism 200. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", "lower", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Please refer to Figures 1 to 7 This utility model provides a bag-feeding and bag-opening device for food packaging paper bags, including a bag-feeding mechanism 100 and a bag-opening mechanism 200;

[0030] The bag feeding mechanism 100 includes a bag feeding section 01 and a paper bag storage slot 02. The bag feeding section 01 is installed above one end of the paper bag storage slot 02. When the bag feeding section 01 rotates, it can transport the paper bags in the paper bag storage slot 02 one by one in a vertical posture to the bag opening mechanism 200.

[0031] The bag opening mechanism 200 includes a mounting frame 03, a bag opening part 04, a connecting part 05, and a power unit 06. The mounting frame 03 is fixedly installed above the bag feeding part 01. The connecting part 05 is slidably installed on the mounting frame 03. The bag opening part 04 can be designed as two parts, which are slidably installed on the connecting part 05 in a symmetrical arrangement. The sides of the two bag opening parts 04 are slidably connected to the mounting frame 03. The output end of the power unit 06 is connected to the connecting part 05, so that the power unit 06 can drive the connecting part 05 to move back and forth longitudinally along the mounting frame 03. This allows the connecting part 05 to drive the bag opening part 04 to slide synchronously towards the middle of the connecting part 05 or towards both ends of the connecting part 05. This enables the bag opening part 04 to clamp and absorb the paper bag vertically conveyed upward by the bag feeding part 01 when it slides towards the middle of the connecting part 05, and to open the opening end of the paper bag when it slides towards both ends of the connecting part 05. For the power unit 06, it needs to drive the connecting part 05 to move up and down. It can be any one of the following forms: hydraulic cylinder, pneumatic telescopic cylinder, electric telescopic rod. Of course, other structures that can realize the up and down movement of the connecting part 05 can also be adopted, such as screw drive or gear and rack drive.

[0032] In one embodiment, the top end of the paper bag storage slot 02 has a guide slope 21 that slopes towards the bottom of the paper bag storage slot 02, and a rubber seat 22 is provided on the guide slope 21. The bag feeding part 01 includes a feeding assembly 11 and a guiding conveying assembly 12; the guiding conveying assembly 12 is rotatably mounted above the guide slope 21, and the feeding assembly 11 is rotatably mounted above the paper bag storage slot 02. When the feeding part rotates, it feeds the paper bags in the paper bag storage slot 02 one by one along the guide slope 21 to the guiding conveying part, and when the feeding part rotates, it synchronously drives the guiding conveying part to transport the paper bags to the bag opening mechanism 200 in a vertical position. When the conveying unit pushes the paper bags onto the guide slope 21, the topmost paper bag will directly contact the conveying unit, and then the conveying unit will push the paper bag onto the guide slope 21. Due to the influence of the guide slope 21 and the combined action of the rubber seat 22, the bottom of the paper bag on the next layer will contact the surface of the rubber seat 22. The rubber seat 22 increases the friction with the paper bag, preventing the paper bag from moving forward. The friction between the topmost paper bag and the paper bag on the next layer is small. The topmost paper bag will be conveyed to the guide conveying assembly 12 under the action of the conveying unit, while the paper bags on the lower layer will stop moving forward due to the obstruction of the rubber seat 22, thus realizing the one-by-one conveying of the paper bags.

[0033] Specifically, the feeding assembly 11 includes a rotating shaft 111 rotatably mounted above the paper bag storage slot 02, and a bag-rubbing cam 112 fixed on the rotating shaft 111. When the rotating shaft 111 rotates, it drives the bag-rubbing cam 112 to feed the uppermost paper bags in the paper bag storage slot 02 toward the guide slope 21. Of course, the rotating shaft 111 can be driven by a motor to rotate. The bag-rubbing cam 112 is made of rubber.

[0034] Specifically, the guiding and conveying assembly 12 includes a first roller 121, a second roller 122, and a redirecting wheel 123. The first roller 121 and the second roller 122 are rotatably mounted above the guide slope 21 along the axial direction of the rotating shaft 111. There is a gap between the first roller 121 and the second roller 122 that allows paper bags to pass through. The first roller 121 rotates synchronously with the rotating shaft 111. The rotating shaft 111 and the first roller 121 can be driven by a sprocket and chain drive or a belt drive to achieve synchronous rotation. The first roller 121 can drive the second roller 122 to rotate. The redirecting wheel 123 is rotatably mounted on the top of the paper bag storage slot 02 and below the second roller 122. The paper bags conveyed by the guide slope 21 are guided by the redirecting wheel 123 into the gap between the first roller 121 and the second roller 122, and the paper bags are clamped and conveyed upwards by the rotational cooperation between the first roller 121 and the second roller 122. At this time, during the rotation of the first roller 121 and the second roller 122, the paper bag will be clamped to ensure that the paper bag will not fall off and to promote the paper bag to move upward in a relatively vertical posture. For the deflector 123, in order to better promote the upward deflection of the paper bag, multiple deflector 123s with equal spacing can be set to achieve the above purpose.

[0035] Of course, in order to ensure that the first roller 121 and the second roller 122 can rotate synchronously, meshing transmission gears 124 are fixedly installed at the ends of the first roller 121 and the second roller 122.

[0036] In one embodiment, the bag opening mechanism 200 further includes a transverse section 07 that can drive the mounting frame 03 to reciprocate in a horizontal direction and in a direction perpendicular to the axis of the guide conveying assembly 12.

[0037] Specifically, the transverse movement part 07 includes a mounting plate 71 and a lead screw 72. The mounting plate 71 is horizontally fixed above the mounting frame 03. Two parallel guide rails 73 are fixed on the mounting plate 71 and arranged in a direction perpendicular to the axis of the guide conveying assembly 12. A slider 74 fixedly connected to the mounting frame 03 is slidably mounted on the guide rails 73. The lead screw 72 is rotatably mounted on the mounting plate 71 along the arrangement direction of the guide rails 73. The lead screw 72 is threadedly connected to the upper end of the mounting frame 03, so that when the lead screw 72 rotates, it can drive the mounting frame 03 to reciprocate along the guide rails 73.

[0038] Specifically, the mounting bracket 03 is provided with a longitudinal track 31 for the longitudinal sliding of the connecting part 05. The upper end of the connecting part 05 is connected to the power unit 06, and the connecting part 05 has a sliding groove 51 with a figure-eight structure.

[0039] Specifically, the mounting frame 03 is equipped with a transverse track 32 for the laterally sliding opening section 04. The upper ends of the two opening sections 04 are slidably connected to the slide groove 51, and the sides are slidably connected to the transverse track 32, so that when the connecting part 05 moves up and down, it can drive the opening section 04 to move along the transverse track 32. The lower end of the opening section 04 has an adsorption head 41 for adsorbing paper bags. The adsorption head 41 relies on vacuum negative pressure to achieve adsorption. The opening section 04 has a sliding rod 42 adapted to the slide groove 51. When the connecting part 05 moves up and down, it can cause the sliding rod 42 to move back and forth along the slide groove 51, thereby controlling the opening section 04 to achieve the left and right opening and closing action, so as to realize the clamping and adsorption of the paper bag, and the opening action after adsorption.

[0040] In one embodiment, a support plate 23 for supporting paper bags is provided at the bottom of the paper bag storage slot 02. A spring 24 is installed between the support plate 23 and the bottom of the paper bag storage slot 02. Limiting plates 25 are provided on the inner walls of both sides of the paper bag storage slot 02 to limit the upward displacement of the support plate 23. The paper bag storage slot 02 can hold several stacked paper bags. Each paper bag is stacked sequentially. Due to the action of the spring 24, the topmost paper bag is always in contact with the bag-rubbing cam 112. The limiting plates 25 can ensure that the support plate 23 is in the maximum limit position when the spring 24 returns to its original position, ensuring that the last paper bag can also contact the bag-rubbing cam 112, so that the bag-rubbing cam 112 can smoothly push the paper bag to the guide slope 21.

[0041] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A bag-opening device for food packaging paper bags, characterized in that: This includes a bag supply mechanism and a bag opening mechanism; The bag feeding mechanism includes a bag feeding section and a paper bag storage slot; the bag feeding section is installed above one end of the paper bag storage slot, and when the bag feeding section rotates, it conveys the paper bags in the paper bag storage slot one by one to the bag opening mechanism. The bag opening mechanism includes a mounting frame, a bag opening section, a connecting section, and a power unit. The mounting frame is fixed above the bag feeding section. The connecting section is slidably mounted on the mounting frame. There are two bag opening sections, which are symmetrically slidably mounted on the connecting section and slidably connected to the mounting frame on their sides. The power unit can drive the connecting section to move back and forth longitudinally along the mounting frame, so that the connecting section drives the bag opening section to slide synchronously towards the middle of the connecting section or towards both ends of the connecting section. This achieves the following: when the bag opening section slides towards the middle of the connecting section, it clamps and absorbs the paper bag vertically conveyed upward by the bag feeding section; when the bag opening section slides towards both ends of the connecting section, it opens the opening end of the paper bag.

2. The food packaging paper bag dispensing and opening device according to claim 1, characterized in that: The top end of the paper bag storage slot has a guide slope that slopes towards the bottom of the paper bag storage slot. A rubber seat is provided on the guide slope. The bag feeding part includes a feeding assembly and a guiding conveying assembly. The guiding conveying assembly is rotatably mounted above the guide slope, and the feeding assembly is rotatably mounted above the paper bag storage slot. When the feeding part rotates, it feeds the paper bags in the paper bag storage slot one by one along the guide slope to the guiding conveying part. When the feeding part rotates, it synchronously drives the guiding conveying part to transport the paper bags to the bag opening mechanism.

3. The food packaging paper bag dispensing and opening device according to claim 2, characterized in that: The feeding assembly includes a rotating shaft mounted rotatably above the paper bag storage slot and a bag-rubbing cam fixed on the rotating shaft. When the rotating shaft rotates, it can drive the bag-rubbing cam to feed the uppermost paper bag in the paper bag storage slot toward the guide slope.

4. The food packaging paper bag dispensing and opening device according to claim 3, characterized in that: The guiding and conveying assembly includes a first roller, a second roller, and a redirecting wheel. The first roller and the second roller are rotatably mounted above the guide slope along the axial direction of the rotating shaft. There is a gap between the first roller and the second roller that allows the paper bag to pass through. The first roller rotates synchronously with the rotating shaft and can drive the second roller to rotate. The redirecting wheel is rotatably mounted at the top of the paper bag storage slot and below the second roller. The paper bag conveyed on the guide slope is guided by the redirecting wheel into the gap between the first roller and the second roller, and the paper bag is clamped and conveyed upward by the rotational cooperation between the first roller and the second roller.

5. The food packaging paper bag dispensing and opening device according to claim 4, characterized in that: The ends of the first and second rollers are fixedly equipped with meshing transmission gears.

6. The food packaging paper bag dispensing and opening device according to claim 2, characterized in that: The bag opening mechanism also includes a transverse moving part that can drive the mounting frame to reciprocate along the horizontal direction and perpendicular to the axis of the guide conveying assembly.

7. The food packaging paper bag dispensing and opening device according to claim 6, characterized in that: The transverse movement part includes a mounting plate and a lead screw; the mounting plate is horizontally fixed above the mounting frame, and two parallel guide rails arranged perpendicular to the axis of the guide conveying assembly are fixed on the mounting plate. A slider fixedly connected to the mounting frame is slidably mounted on the guide rails. The lead screw is rotatably mounted on the mounting plate along the arrangement direction of the guide rails. The lead screw is threadedly connected to the upper end of the mounting frame, so that when the lead screw rotates, it can drive the mounting frame to reciprocate along the guide rails.

8. The food packaging paper bag dispensing and opening device according to claim 1, characterized in that: The mounting frame is provided with a longitudinal track for the longitudinal sliding of the connecting part. The upper end of the connecting part is connected to the power unit, and the connecting part has a sliding groove with a figure-eight structure.

9. The food packaging paper bag dispensing and opening device according to claim 8, characterized in that: The mounting frame is provided with a transverse track for the bag opening section to slide laterally. The upper ends of the two bag opening sections are slidably connected to the slide grooves, and the sides are slidably connected to the transverse track, so that when the connecting part moves up and down, it can drive the bag opening section to move along the transverse track. The lower end of the bag opening section has an adsorption head to hold the paper bag.

10. The food packaging paper bag dispensing and opening device according to claim 1, characterized in that: The bottom of the paper bag storage slot is provided with a support plate for supporting the paper bags. A spring is installed between the support plate and the bottom of the paper bag storage slot. Limiting plates are provided on the inner walls of both sides of the paper bag storage slot to limit the upward displacement of the support plate.

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