A quick bag-opening device for reducing fruit damage rate

Abstract

The present invention relates to the technical field of bag unpacking devices, and more specifically, it relates to a fast bag unpacking device for reducing the fruit damage rate, comprising a frame and two working rollers rotatably arranged on the frame, a driving component for driving the two working rollers to rotate inward synchronously is arranged on the frame, a plurality of annular first transverse grooves are arranged on the circumferential outer wall of the working roller at intervals along the axial direction, the plurality of first transverse grooves enable the circumferential outer wall of a single working roller to form an interval-distributed roller surface, wherein the roller surface of one working roller is fitted with the bottom surface of the first transverse groove of another working roller, and the bottom surface of the first transverse groove of each working roller is also provided with an annular second transverse groove. The fast bag unpacking device for reducing the fruit damage rate of the present invention can protect the fruit branches at the ends of the fruits during the bag unpacking process, reduce the contact area between the working rollers and the bagged fruits, and finally reduce the fruit damage rate.

Description

Technical Field

[0001] The invention relates to the technical field of bag opening devices, in particular to a quick bag opening device capable of reducing fruit damage rate. Background Art

[0002] In order to extend the market sales period of fruits and enrich the market supply, it is very important to delay the ripening speed of fruits after picking. At present, the common method is to use fresh-keeping bags to pack fruits to prevent the diffusion of ethylene gas. Sealed packaging can not only prevent the mutual influence of ethylene gas between fruits and accelerate ripening, but also effectively isolate the spread of external decay-causing molds, thereby preventing fruits from rotting due to mold infection.

[0003] Before selling bagged fruits, they often need to be unpacked. Since manual unpacking is too inefficient, in the prior art, a Chinese patent with publication number CN216735137U discloses a thin packaging removal structure, which includes a pair of working rollers. When the working rollers are rolling, the packaging of the items (such as bagged fruits) placed on the rollers can be clamped and pulled downward. As the working rollers rotate, the fresh-keeping bags can be completely torn off and rolled under the working rollers, thereby realizing automatic unpacking of the fruits.

[0004] Although bag unpacking machines such as the above-mentioned prior art are able to perform basic bag unpacking operations, it is found in actual use that due to the lack of consideration for protecting the fruit branches at the ends of the fruits, the fruit branches are easily damaged or fall off, thereby affecting the shelf life of the fruits after unpacking. In addition, the contact area between the current working roller and the bagged fruits is large, which increases the risk of damage to the fruit surface. Summary of the invention

[0005] In order to protect the fruit branches at the ends of the fruits during the bag unpacking process, reduce the contact area between the working roller and the bagged fruits, and ultimately reduce the fruit damage rate, the present application provides a quick bag unpacking device that reduces the fruit damage rate.

[0006] The invention provides a fast bag-opening device for reducing the fruit damage rate, which adopts the following technical solutions:

[0007] A fast bag unpacking device for reducing the fruit damage rate comprises a frame and two working rollers rotatably arranged on the frame, the frame is provided with a driving assembly for driving the two working rollers to rotate inward synchronously, the circumferential outer wall of the working roller is provided with a plurality of annular first transverse grooves spaced apart along the axial direction, the plurality of first transverse grooves enable the circumferential outer wall of a single working roller to form a roller surface distributed at intervals, wherein the roller surface of one working roller is in contact with the bottom surface of the first transverse groove of another working roller; and the bottom surface of the first transverse groove of each working roller is also provided with an annular second transverse groove.

[0008] Preferably, the two working rollers are both rubber-coated rollers.

[0009] Preferably, the two working rollers are respectively a first rubber-coated roller and a second rubber-coated roller, the first rubber-coated roller is an active roller, the second rubber-coated roller is a driven roller, and each roller surface of the first rubber-coated roller is arranged with a plurality of differential grooves around the axial direction.

[0010] Preferably, the driving assembly includes a servo motor, a coupling and a gear set, the servo motor is arranged on one side of the frame, the servo motor is coaxially connected to one of the working rollers through the coupling, and the working roller is connected to another working roller through the gear set on the other side of the frame.

[0011] Preferably, a suction bag assembly is provided at the bottom of the frame, and the suction bag assembly includes a wind hood and a fan. The wind hood is located below the two working rollers. The wind hood is trumpet-shaped so as to have an air inlet and an air outlet. The air inlet of the wind hood is long and faces the bottom between the inner sides of the two working rollers. The air outlet of the wind hood is circular and opens downward. The fan is connected to the air outlet of the wind hood through a pipe.

[0012] Preferably, the quick bag opening device further comprises a fruit pushing mechanism and a fruit leakage tray, wherein the fruit pushing mechanism and the fruit leakage tray are arranged on both sides of the two working rollers, and an inverted V-shape is formed between the fruit pushing mechanism and the fruit leakage tray.

[0013] Preferably, the fruit pushing mechanism includes a cylinder, a slide rail and a fruit pushing rod, the slide rail and the cylinder are tilted on the frame, the fruit pushing rod includes a cross bar and a plurality of branch rods vertically connected to one side of the cross bar, the cross bar is connected between the cylinder and the slide rail, and the plurality of branch rods respectively pass through the plurality of the first cross grooves of one of the working rollers.

[0014] Preferably, a dredging assembly is provided at the air outlet of the air hood; the dredging assembly comprises a control ring, a guide rod and a dredging block, a plurality of the dredging blocks are circumferentially arranged on the inner wall of the air outlet, and each of the dredging blocks is movably arranged on the inner side of the air outlet along the diameter direction of the air outlet; a plurality of guide rods penetrate into the outer side of the air outlet along its diameter direction and connect a plurality of the dredging blocks one by one, and a spring is connected between the outer end of the guide rod and the air outlet; the control ring is vertically slidably arranged on the outer side of the air outlet, the control ring is located above the guide rod, and an inclined surface for abutting the outer end of the guide rod is provided between the inner side surface and the bottom surface of the control ring; when the control ring moves downward, the guide rod pushes the dredging block to move inward under the action of the inclined surface, and when the control ring moves upward, the guide rod is reset under the action of the spring.

[0015] Preferably, the fruit leakage tray is vertically slidably arranged on the frame, and a connecting rod is connected between the fruit leakage tray and the control ring.

[0016] Preferably, the shape of the dredge block is a right-angled trapezoid, the upper base surface of the dredge block is smaller than the lower base surface, the side of the dredge block facing the axis of the air outlet is a right-angled surface and the side facing away from the axis of the air outlet is a sloped surface, and the sloped surface of the dredge block is provided with an air guide outlet inclined downward in the direction of the right-angled surface.

[0017] The beneficial effects of the present invention are:

[0018] 1. When the bagged fruits are placed on the two working rollers for unpacking, the contact area between the bagged fruits and the working rollers will be greatly reduced, which can effectively reduce the fruit damage rate compared with the existing technology. Moreover, if the fruit branches are accidentally rolled between the roller surfaces of the two working rollers and the first transverse groove, the second transverse groove can prevent the fruit branches from being further rolled down, thereby preventing the fruit branches from being damaged or falling off, and finally further reducing the fruit damage rate;

[0019] 2. When the two working rollers rotate inward and pull the fresh-keeping bag downward, the bag suction component can suck the fresh-keeping bag away in time to prevent the fresh-keeping bag from continuing to adhere to the working rollers, ensuring that the bag removal work can proceed normally;

[0020] 3. Every time the bag unloading work is completed, when the fruit pushing mechanism pushes the fruit to the fruit tray, the fruit tray will move downward due to the impact of the falling fruit. At this time, the fruit tray is driven by the connecting rod to move downward synchronously once, so as to automatically complete a dredging work in the gap between bag unloading, realizing the automatic response of the dredging work. At the same time, the spring between the guide rod and the air outlet can serve as a buffer structure of the fruit tray and provide a buffer effect for the fruit tray;

[0021] 4. During the resetting process of the dredge block, the force of the airflow will act on the inclined surface of the dredge block, generating a resetting resistance to the dredge block, slowing down the resetting speed of the dredge block, thereby slowing down the resetting speed of the spring, and finally slowing down the speed at which the fruit tray resets upward, thereby achieving the effect of controlling the height at which the fruit on the fruit tray bounces off, and reducing the risk of damage to the fruit at this stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front structural schematic diagram of the quick bag opening device in the first embodiment;

[0023] Figure 2 is a schematic structural diagram of the first rubber-coated roller and the second rubber-coated roller in Embodiment 1;

[0024] Figure 3 is a schematic structural diagram of the wind shield in the first embodiment;

[0025] Figure 4is a schematic diagram of the back structure of the quick bag opening device in the first embodiment;

[0026] Figure 5 It is a structural cross-sectional view of the dredging component of the air hood outlet in the second embodiment.

[0027] Explanation of the reference numerals in the accompanying drawings: 1. working roller; 11. first rubber-coated roller; 111. differential groove; 12. second rubber-coated roller; 2. fruit; 21. fruit branch; 31. first transverse groove; 32. second transverse groove; 41. servo motor; 42. coupling; 43. gear set; 5. wind hood; 51. air inlet; 52. air outlet; 61. cylinder; 62. slide rail; 63. fruit pushing rod; 7. fruit tray; 81. control ring; 82. guide rod; 83. dredging block; 84. spring; 85. connecting rod. DETAILED DESCRIPTION

[0028] The following will be combined Figure 1-Figure 5 The present invention is further illustrated by the following embodiments.

[0029] Embodiment 1

[0030] This embodiment discloses a quick bag opening device for reducing the fruit damage rate.

[0031] Reference Figure 1 and Figure 2 The rapid bag unpacking device for reducing the fruit damage rate includes a frame and two working rollers 1 rotatably arranged on the frame, the rotation axes of the two working rollers 1 are both horizontal lines, the two working rollers 1 are parallel to each other and arranged adjacently in the horizontal direction, the top of the inner side between the two working rollers 1 is used to place the fruits 2 to be unpacked, and the frame is provided with a driving component for driving the two working rollers 1 to rotate synchronously toward the inner and lower sides. When the two working rollers 1 rotate inward synchronously, the fresh-keeping bag will continue to be pulled. After the pulling exceeds the maximum pulling force that the fresh-keeping bag can withstand, the fresh-keeping bag will break, and then the two working rollers 1 will continue to rotate and peel the fresh-keeping bag from the fruit 2.

[0032] Reference Figure 1 and Figure 2In particular, the circumferential outer wall of each working roller 1 is provided with a plurality of annular first transverse grooves 31 evenly spaced along the axial direction. The plurality of first transverse grooves 31 enable the circumferential outer wall of the single working roller 1 to form a roller surface evenly spaced. Between two working rollers 1, the roller surface of one working roller 1 fits with the bottom surface of the first transverse grooves 31 of the other working roller 1, so that an interlaced matching structure is formed between the two working rollers 1. Based on this structure, when the bagged fruits 2 are placed on the two working rollers 1 for unpacking, the contact area between the bagged fruits 2 and the working rollers 1 will be greatly reduced, which can effectively reduce the fruit damage rate compared with the prior art. In addition, the bottom surface of the first transverse groove 31 of each working roller 1 is further provided with an annular second transverse groove 32, so that a multi-stage transverse groove structure is formed on the working roller 1. Through this arrangement, if the fruit branches 21 of the fruit 2 are accidentally rolled in between the roller surfaces of the two working rollers 1 and the first transverse groove 31, the second transverse groove 32 can prevent the fruit branches 21 of the fruit 2 from being further rolled in, thereby preventing the fruit branches 21 of the fruit 2 from being damaged or falling off, and finally further reducing the fruit damage rate. In summary, the multi-stage transverse groove structure of the working roller 1 of the quick bagging device of the present invention can not only reduce the contact area with the bagged fruit 2, but also prevent the fruit branches 21 of the fruit 2 from being damaged or falling off, thereby effectively reducing the fruit damage rate.

[0033] Reference Figure 1 and Figure 2 The driving assembly includes a servo motor 41, a coupling 42 and a gear set 43. The servo motor 41 is arranged on one side of the frame. The servo motor 41 is coaxially connected to one of the working rollers 1 through the coupling 42. The working roller 1 is connected to another working roller 1 through the gear set 43 on the other side of the frame. Finally, the servo motor 41 drives the two working rollers 1 to rotate downward inward through the coupling 42 and the gear set 43.

[0034] Reference Figures 1 to 3 A bag suction assembly is provided at the bottom of the frame, and the bag suction assembly includes a hood 5 and a fan. The hood 5 is located below the two working rollers 1. The hood 5 is trumpet-shaped with an air inlet 51 and an air outlet 52. In the invention, the air inlet 51 of the hood 5 is long and faces the bottom between the inner sides of the two working rollers 1. The air outlet 52 of the hood 5 is circular and opens downward. The fan is connected to the air outlet 52 of the hood 5 through a pipeline. When the two working rollers 1 rotate inward and pull the fresh-keeping bag downward, the bag suction assembly can suck the fresh-keeping bag away in time to prevent the fresh-keeping bag from continuing to adhere to the working rollers 1, ensuring that the bag removal work can proceed normally.

[0035] Reference Figures 1 to 4The quick bag unpacking device also includes a fruit pushing mechanism and a fruit leakage tray 7, which are arranged on both sides of the two working rollers 1. After the bag unpacking is completed, the fruit pushing mechanism pushes the fruit 2 on the working roller 1 down to the fruit leakage tray 7. In this embodiment, the fruit pushing mechanism and the fruit leakage tray 7 are arranged in an inverted V shape. Specifically, the fruit pushing mechanism includes a cylinder 61, a slide rail 62 and a fruit pushing rod 63, wherein two slide rails 62 are arranged obliquely on the frame, and the fruit pushing rod 63 is arranged on the two slide rails 62 to realize oblique sliding. The cylinder 61 is obliquely arranged on the frame and connected to the fruit pushing rod 63, and the cylinder 61 is used to drive the fruit pushing rod 63 to push the fruit obliquely upward. The fruit pushing rod 63 includes a cross bar and multiple branch rods. The cross bar is connected between the cylinder 61 and the slide rail 62. The multiple branch rods are vertically connected to one side of the cross bar, and the multiple branch rods respectively pass through the multiple first cross grooves 31 of one of the working rollers 1, so that the fruit pushing rod 63 is closer to the bottom of the fruit 2 when pushing the fruit, which is convenient for pushing out the fruit 2 after unpacking.

[0036] Reference Figure 1 and Figure 2 The two working rollers 1 are both rubber-coated rollers, which can increase the friction between the rollers and the fresh-keeping bag, making it easier to tear the fresh-keeping bag of the bagged fruit 2, and speeding up the bag removal efficiency. The two working rollers 1 are respectively a first rubber-coated roller 11 and a second rubber-coated roller 12, wherein the first rubber-coated roller 11 is connected to the servo motor 41 through a coupling 42, so the first rubber-coated roller 11 is an active roller, and the second rubber-coated roller 12 is a driven roller. Furthermore, a plurality of differential grooves 111 are arranged on each roller surface of the first rubber-coated roller 11 around the axial direction. By providing the differential grooves 111, the forces exerted by the first rubber-coated roller 11 and the second rubber-coated roller 12 on the bagged fruits 2 will produce a differential effect, that is, when the first rubber-coated roller 11 and the second rubber-coated roller 12 rotate inwardly, since the contact area between the bagged fruits 2 and the second rubber-coated roller 12 is larger and the contact time is longer, the bagged fruits 2 will produce a rolling effect between the first rubber-coated roller 11 and the second rubber-coated roller 12. On the one hand, the rolling effect can accelerate the contact between the fresh-keeping bag and the rubber-coated roller, thereby improving the bag unloading efficiency. On the other hand, the rolling effect can avoid a single force point on the bagged fruits 2, thereby further reducing the fruit damage rate.

[0037] Embodiment 2

[0038] This embodiment also discloses a quick bag opening device that reduces the fruit damage rate.

[0039] The difference from the first embodiment is that: the fruit tray 7 is vertically slidably arranged on the frame, and the fruit tray 7 is connected with a buffer structure. When the fruit pushing mechanism pushes the unpacked fruits 2 to the fruit tray 7, the gravity of the fruits 2 will have a certain impact on the fruit tray 7. The reaction force of the impact may cause certain damage to the fruits 2. By movably connecting the fruit tray 7 to the buffer structure, the fruit 2 can have a buffer effect when falling onto the fruit tray 7, and finally reduce the fruit damage rate in the fruit pushing stage.

[0040] Reference Figure 5 In the continuous bag unloading work, due to the large amount of bag unloading and the possibility of glue on the fresh-keeping bag, the air outlet 52 of the hood 5 may be blocked. To solve this problem, a dredging component is provided at the air outlet 52 of the hood 5. The dredging component includes a control ring 81, a guide rod 82 and a dredging block 83, wherein a plurality of dredging blocks 83 are provided, and the plurality of dredging blocks 83 are arranged on the inner wall of the air outlet 52 around the axial direction of the air outlet 52, and each dredging block 83 is movably arranged on the inner side of the air outlet 52 along the diameter direction of the air outlet 52. The number of guide rods 82 is the same as the number of dredging blocks 83. The plurality of guide rods 82 penetrate into the outer side of the air outlet 52 along the diameter direction thereof and are connected to the plurality of dredging blocks 83 one by one. A spring 84 is also connected between the outer end of the guide rod 82 and the air outlet 52. The control ring 81 is slidably arranged on the outer side of the air outlet 52 along the axial direction of the air outlet 52. The control ring 81 is located above the guide rod 82, and an inclined surface for abutting the outer end of the guide rod 82 is arranged between the inner side surface and the bottom surface of the control ring 81. When the control ring 81 moves downward, the guide rod 82 will push the dredging block 83 to move inward under the action of the inclined surface. The dredging block 83 will compress the fresh-keeping bag or push down the fresh-keeping bag adhered to the inner side surface of the air outlet 52, thereby dredging the air outlet 52. When the control ring 81 moves upward, the guide rod 82 will be reset under the action of the spring 84, and finally the reset of the dredging block 83 is completed. In particular, a connecting rod 85 is connected between the fruit tray 7 and the control ring 81. The purpose of setting the connecting rod 85 is that whenever the bag unpacking work is completed, when the fruit pushing mechanism pushes the fruit 2 to the fruit tray 7, the fruit tray 7 will move downward due to the impact of the falling fruit 2. At this time, the fruit tray 7 is driven by the connecting rod 85 to move downward synchronously once, so as to automatically complete a dredging work in the gap between bag unpacking, and realize the automatic response of the dredging work. At the same time, the spring 84 between the guide rod 82 and the air outlet 52 can serve as a buffer structure of the fruit tray 7 and provide a buffer effect for the fruit tray 7.

[0041] Reference Figure 5The shape of the dredging block 83 is a right-angled trapezoid, the upper bottom surface of the dredging block 83 is smaller than the lower bottom surface, the side of the dredging block 83 facing the axis of the air outlet 52 is a right-angled surface, and the side facing away from the axis of the air outlet 52 is an inclined surface, and the inclined surface of the dredging block 83 is provided with an air guide port inclined downward in the direction of the right-angled surface. Through this arrangement, during the reset process of the dredging block 83, the force of the airflow will act on the inclined surface of the dredging block 83, generating a reset resistance force on the dredging block 83, slowing down the reset speed of the dredging block 83, thereby slowing down the reset speed of the spring 84, and finally slowing down the speed of the upward reset of the leaking fruit tray 7, achieving the effect of controlling the bounce height of the fruit 2 on the leaking fruit tray 7, and reducing the risk of the fruit 2 being damaged at this stage.

[0042] The above are all preferred embodiments of the present invention, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A quick bag opening device for reducing the fruit damage rate, characterized in that: The invention comprises a frame and two working rollers (1) rotatably arranged on the frame, wherein a driving assembly for driving the two working rollers (1) to rotate inward synchronously is arranged on the frame, and a plurality of annular first transverse grooves (31) are arranged at intervals along the axial direction on the circumferential outer wall of the working roller (1), and the plurality of first transverse grooves (31) enable the circumferential outer wall of a single working roller (1) to form a roller surface distributed at intervals, wherein the roller surface of one working roller (1) is in contact with the bottom surface of the first transverse groove (31) of another working roller (1); and the bottom surface of the first transverse groove (31) of each working roller (1) is also provided with an annular second transverse groove (32); A suction bag assembly is arranged at the bottom of the frame, and the suction bag assembly comprises a wind cover (5) and a fan. The wind cover (5) is located below the two working rollers (1). The wind cover (5) is trumpet-shaped and has an air inlet (51) and an air outlet (52). The air inlet (51) of the wind cover (5) is long and faces the bottom between the inner sides of the two working rollers (1). The air outlet (52) of the wind cover (5) is circular and opens downward. The fan is connected to the air outlet (52) of the wind cover (5). The quick bag opening device further comprises a fruit pushing mechanism and a fruit leakage tray (7), wherein the fruit pushing mechanism and the fruit leakage tray (7) are respectively arranged on both sides of the two working rollers (1), and an inverted V-shape is formed between the fruit pushing mechanism and the fruit leakage tray (7); A dredging assembly is provided at the air outlet (52) of the wind shield (5); the dredging assembly comprises a control ring (81), a guide rod (82) and a dredging block (83); a plurality of the dredging blocks (83) are circumferentially arranged on the inner wall of the air outlet (52); each of the dredging blocks (83) is movably arranged on the inner side of the air outlet (52) along the diameter direction of the air outlet (52); a plurality of the guide rods (82) penetrate into the outer side of the air outlet (52) along the diameter direction thereof and are connected to the plurality of the dredging blocks (83) one by one; the outer ends of the guide rods (82) are connected to the air outlet (52); 2) is connected with a spring (84); the control ring (81) is vertically slidably arranged on the outside of the air outlet (52), the control ring (81) is located above the guide rod (82), and an inclined surface for abutting against the outer end of the guide rod (82) is arranged between the inner side surface and the bottom surface of the control ring (81); when the control ring (81) moves downward, the guide rod (82) pushes the dredging block (83) to move inward under the action of the inclined surface, and when the control ring (81) moves upward, the guide rod (82) is reset under the action of the spring (84).

2. A quick bag opening device for reducing fruit damage rate according to claim 1, characterized in that: The two working rollers (1) are both rubber-coated rollers.

3. The rapid bag opening device for reducing the fruit damage rate according to claim 2 is characterized in that: The two working rollers (1) are respectively a first rubber-coated roller (11) and a second rubber-coated roller (12); the first rubber-coated roller (11) is an active roller, and the second rubber-coated roller (12) is a driven roller; and a plurality of differential grooves (111) are arranged on each roller surface of the first rubber-coated roller (11) around an axial direction.

4. The rapid bag opening device for reducing fruit damage rate according to claim 1, characterized in that: The driving assembly comprises a servo motor (41), a coupling (42) and a gear set (43); the servo motor (41) is arranged on one side of the frame; the servo motor (41) is coaxially connected to one of the working rollers (1) through the coupling (42); and the working roller (1) is connected to another working roller (1) on the other side of the frame through the gear set (43).

5. The rapid bag opening device for reducing fruit damage rate according to claim 1 is characterized in that: The fruit pushing mechanism comprises a cylinder (61), a slide rail (62) and a fruit pushing rod (63); the slide rail (62) and the cylinder (61) are tiltedly arranged on the frame; the fruit pushing rod (63) comprises a cross bar and a plurality of branch rods vertically connected to one side of the cross bar; the cross bar is connected between the cylinder (61) and the slide rail (62); the plurality of branch rods respectively pass through a plurality of the first cross grooves (31) of one of the working rollers (1).

6. The rapid bag opening device for reducing the fruit damage rate according to claim 1 is characterized in that: The fruit leakage tray (7) is vertically slidably arranged on the frame, and a connecting rod (85) is connected between the fruit leakage tray (7) and the control ring (81).

7. A quick bag opening device for reducing fruit damage rate according to claim 6, characterized in that: The shape of the dredging block (83) is a right-angled trapezoid; the upper bottom surface of the dredging block (83) is smaller than the lower bottom surface; the side of the dredging block (83) facing the axis of the air outlet (52) is a right-angled surface, and the side facing away from the axis of the air outlet (52) is an inclined surface; the inclined surface of the dredging block (83) is provided with an air guide port inclined downward in the direction of the right-angled surface.

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