A net feeding mechanism and a small fruit net-sleeving packing machine having the same

Abstract

The invention relates to the technical field of small fruit packing, and in particular to a net feeding mechanism and a small fruit net packing machine having the same. The net feeding mechanism comprises: two active curved rollers parallel to each other, a driving mechanism for driving the two active curved rollers to synchronously reverse, and a plurality of rotatable omnidirectional wheels evenly arranged on the circumference of the top end of a support column; the omnidirectional wheels are located between the two active curved rollers, and can drive the net sleeve to move vertically downward along the support column, and the diameter of the bottom end of the support column gradually increases in a direction away from the omnidirectional wheels. At the same time, four symmetrically distributed brushes can be arranged around the bottom of the support column, and the four brushes limit the horizontal displacement of the net sleeve while pushing the net sleeve downward. A group of brushes in symmetrical positions can also be replaced with limiting balls, which only play the role of limiting the horizontal displacement of the net sleeve, thereby solving the problem of low net sleeve support and conveying efficiency and improving the finishing.

Description

Technical Field

[0001] The present invention relates to the technical field of small fruit boxing, and particularly relates to a net feeding mechanism and a small fruit net-sleeved boxing machine with the same. Background Art

[0002] China is the largest fruit-growing country in the world, with numerous fruit-growing regions widely distributed. Fruits are often transported to other places for sale. As is well known, fruits are prone to damage and spoilage during storage and transportation. Therefore, fruits are generally treated with net sleeves after picking. On the one hand, the packaging can reduce the damage suffered by fruits during transportation and ensure fruit quality. On the other hand, it can improve the economic benefits of fruits.

[0003] Among the existing patents, ZL201810535875.X, a fully automatic apple net - covering and boxing machine, has multiple first grasping devices arranged in a row to grasp the apples in a row of receiving grooves on the grasping and aligning device; and the net - covering device also puts the apples grasped by each first grasping device into a net sleeve opened by a net - sleeve supporting device; the boxing device has multiple second grasping devices arranged in a row to grasp multiple apples and net sleeves on the net - sleeve preparation device, and the boxing device also puts the apples grasped by the multiple second grasping devices into the fruit box. ZL201810535977.1, a net - sleeve supporting device and a fully automatic apple net - covering and boxing machine having the same, its net - sleeve supporting device includes: a first structural member; a second structural member; multiple groups of limiting devices, each group of limiting devices includes two spaced - apart limiting columns arranged on the upper surface of the first structural member, and the multiple groups of limiting devices are evenly distributed along the circumferential direction of the first structural member and are located radially outside the second structural member; multiple net - sleeve opening devices, each net - sleeve opening device includes a limiting part and an opening part located at one end of the limiting part; the other end of each limiting part is located between the two limiting columns of a group of limiting devices; and each limiting part is rotatably arranged on the second structural member so that when the first structural member and the second structural member rotate relative to each other, the distance between each opening part and the axis of the second structural member becomes larger or smaller, thereby opening the net sleeve sleeved on the multiple opening parts when the distance between each opening part and the axis of the second structural member becomes larger. ZL201810535976.7, an automatic apple net - covering and boxing machine, the net - covering and boxing device of which has a net - supporting device, a fruit - carrying platform, a cutting device, a first grasping device and a second grasping device: the outer side of the net - supporting device is configured to install the whole net sleeve, and the inner side of the net - supporting device is provided with a fruit - carrying platform; one grasping device is configured to put the apples on the third conveyor belt into the fruit - carrying platform; the second grasping device is configured to: grasp the upper end of the whole net sleeve and the apples on the fruit - carrying platform so that the whole net sleeve and the apples on the fruit - carrying platform move upward by a preset distance; and after the cutting device cuts the whole net sleeve, put the net - sleeve section and the apples grasped by the second grasping device into the fruit box. When the conveyor belts of these three apple net - covering and boxing machines operate, only the upper half - week of the chain plate plays an actual role, and due to the relatively heavy overall weight of the net - sleeve supporting mechanism, the conveyor - belt speed is uneven and the sag is serious. If all the net - sleeve supporting devices are installed on the conveyor belt, not only a motor with a larger power is required, but also higher requirements are imposed on the material of the conveyor belt; at the same time, when using a plate - type conveyor belt for transmission, the transmission is unstable, and it is easy for the conveyed net sleeve to deviate from the position of the net - supporting device.

[0004] ZL201610676897.9, an apple net - covering packaging machine and its operation method, realizes the supply of apples through the cooperation of a feed box and a turntable, and realizes the net - covering of apples through the cooperation of clamping jaws, an upper sleeve and a lower sleeve.

[0005] ZL201911097329.3 An automatic fruit packaging machine, in which a fruit dropping mechanism is arranged below the discharge end of the fruit feeding mechanism. The lower part of the fruit dropping mechanism is a mechanical shutter mechanism that automatically opens and closes. A net feeding mechanism is arranged below the mechanical shutter mechanism. The input end of the lower finished product conveying mechanism is arranged below the net feeding mechanism, and the output end of the lower finished product conveying mechanism is arranged above the boxing mechanism. In this fruit packaging machine, the mechanical shutter only has the function of sleeving the net, resulting in low equipment utilization rate and low efficiency. At the same time, the process of apple net sleeving is complicated. It is necessary to first put on the net, then expand the net sleeve, then put the apple into the expanded net sleeve and then take away the apple, resulting in a reduction in the overall net sleeving speed. The net feeding stroke of the fruit packaging machine is long, and it is also necessary to first put on the net and then expand the net. During the net expansion process, a push rod is used to push the dial to expand the net sleeve, etc., resulting in a slow overall net sleeving speed. In addition, the fruit dropping stroke of the fruit packaging machine is too long, causing great damage to the apples during the falling process. At the same time, it is easy for the apples to deviate from the falling direction due to the vibration of the equipment during the falling process. There are also many structures such as heating wires and net feeding mechanisms in the lower part, which are likely to cause greater damage to the apples.

[0006] However, in the existing apple net sleeving equipment, the net sleeving speed cannot keep up with the speed of the existing sorting equipment. To solve the problem of apple sorting and net sleeving, the existing apple net sleeving equipment can only sleeve the apples that have been sorted. And an apple sorting line often has multiple apple channel outlets, so multiple net sleeving devices are required to cooperate with an apple sorting production line, occupying a large amount of production space, consuming more energy, and increasing the production cost.

[0007] Therefore, the existing fruit packaging technology has the disadvantages of low net sleeving efficiency, damaging apples, and being unable to be combined with the existing fruit sorting equipment. Summary of the Invention

[0008] The purpose of the present invention is to overcome the defects and deficiencies existing in the known existing fruit packaging technology. Therefore, the present invention provides a net feeding mechanism and a small fruit net sleeving and boxing machine with it, which can improve the net sleeving efficiency, and at the same time save the step of taking the fruit out of the net expanding device, reducing fruit damage and production costs.

[0009] The technical solution adopted by the present invention is as follows:

[0010] On the one hand, the present invention provides a net feeding mechanism, which includes: two mutually parallel active curved rollers, a driving mechanism for driving the two active curved rollers to rotate synchronously in reverse, and a plurality of rotatable omnidirectional wheels evenly arranged on the circumference of the top end of the expanding column; the active curved rollers are provided with grooves on the circumference; the omnidirectional wheels are located between the two active curved rollers; the diameter of the bottom end of the expanding column gradually increases along the direction away from the omnidirectional wheels; the omnidirectional wheels are configured to cooperate with the grooves on the active curved rollers and drive the net sleeve to move vertically downward along the expanding column.

[0011] Furthermore, four brushes symmetrically distributed in a "well" shape are arranged on the outside of the bottom end of the support column; the brushes are configured to be rotatably fixed and supported by the shaft and the bearing seats at both ends of the shaft.

[0012] Furthermore, two of the four brushes that are symmetrically distributed can be replaced by two symmetrically distributed limiting balls.

[0013] Furthermore, the driving mechanism includes a driving shaft, a bearing seat, a driven shaft and two mutually meshing gears; the driving shaft and the driven shaft are respectively concentrically connected to the two driving curved rollers, and their respective two ends are fixedly supported by the bearing seats; the two gears are respectively connected to the driving shaft and the driven shaft; the driving shaft is configured to be driven by an externally connected stepper motor.

[0014] On the other hand, the present invention also provides a small-sized fruit net packing box machine, which comprises:

[0015] A frame, the upper part of which is provided with a net frame;

[0016] The net feeding mechanism is arranged on the upper part of the frame and is configured to receive the net sleeve on the net sleeve frame;

[0017] The net sleeve cutting mechanism is located directly below the net feeding mechanism, and comprises two motion mechanisms and scissors symmetrically arranged in the same straight line direction; the motion mechanism is configured to drive the scissors to open and close;

[0018] A rotary opening and closing device is arranged in the middle of the frame and below the net sleeve cutting mechanism, and is provided with a rotary opening and closing frame and a plurality of rotary opening and closing mechanisms. The rotary opening and closing frame is a tubular structure that can rotate around its central axis, and the rotary opening and closing mechanisms are evenly arranged on the circumference of the rotary opening and closing frame; the rotary opening and closing mechanism is configured to receive the net sleeve on the net feeding mechanism and allow a single fruit to pass through and enter the net sleeve;

[0019] a fruit conveying mechanism, disposed on one side of the rotating opening and closing device, and configured to continuously carry fruits into the rotating opening and closing mechanism; and

[0020] The fruit conveying mechanism is arranged at the bottom of the frame and is configured to convey the fruit into the fruit box. The fruit conveying mechanism comprises a buffer mechanism and a conveying mechanism. The buffer mechanism is configured to buffer the fruit onto the conveying mechanism.

[0021] Furthermore, the motion mechanism includes a bracket, a screw driven by a servo motor and rotatably connected to the bracket, and a nut cooperatively connected to the screw; the nut is slidably connected to the bracket, and the scissors are fixed on the nut.

[0022] Further, the rotary opening and closing mechanism is provided with a cover, a plurality of rotary opening and closing pieces, a rotary disk, a chassis, and a rubber buffer sleeve that are concentric from top to bottom; the plurality of rotary opening and closing pieces can form a circumference, and a vertical support rod is provided at one end close to the center. The rotary opening and closing piece is slidably connected to the long hole on the cover through a shaft, and the support rod passes above the cover; the chassis is fixedly connected to the cover; the rubber buffer sleeve is of a conical shell structure and is arranged below the chassis; the rotary disk is configured to rotate along the slot between the cover circumference and the chassis and drive the rotary opening and closing piece to move.

[0023] Further, the length of the support rod is 1 / 2 of the length of the mesh sleeve.

[0024] Further, the buffer mechanism includes a box body and buffer rubber arranged in the box body.

[0025] Further, strip-shaped rubber is arranged on both sides of the conveying mechanism.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] (1) High working efficiency

[0028] The way of rotating the rotary opening and closing frame and the rotary opening and closing mechanism have the functions of supporting the net and sleeving the net, improving the utilization rate of the equipment and the working efficiency.

[0029] (2) Fast net sleeving speed

[0030] The net support and net sleeving are carried out synchronously, and the step of taking out the fruit from the net support device is omitted. The net feeding speed of the independently developed inner and outer curved roller nested net feeding mechanism can match the net sleeving speed, greatly improving the overall net sleeving speed of the equipment.

[0031] (3) Can be docked with existing sorting equipment

[0032] The net sleeving speed can match the sorting speed, avoiding the situation of multiple machines sleeving the sorted fruits, reducing energy consumption and costs such as equipment purchase and maintenance.

[0033] (4) Reduce fruit damage during net sleeving

[0034] Buffer rubber is added to the rotary opening and closing mechanism and the conveyor belt for falling fruits, and the falling fruit travel is shortened, greatly reducing the damage to fruits during net sleeving.

[0035] (5) Reasonable mechanism design

[0036] The net sleeving and net feeding are carried out simultaneously without interfering with each other. During the net feeding process, the net sleeve is fed into the rotary opening and closing mechanism by using gravity. Moreover, the net feeding stroke is short, which improves the net feeding speed and can match the net sleeving speed of the equipment itself, realizing efficient net sleeving. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is Embodiment 1 of the net feeding mechanism of the present invention.

[0038] Figure 2 This is a sectional view of Embodiment 1 of the net feeding mechanism of the present invention.

[0039] Figure 3 This is a sectional view of Embodiment 2 of the net feeding mechanism of the present invention.

[0040] Figure 4 This is a partial bottom view of Embodiment 2 of the net feeding mechanism of the present invention.

[0041] Figure 5 This is Embodiment 3 of the net feeding mechanism of the present invention.

[0042] Figure 6 This is a partial bottom view of Embodiment 3 of the net feeding mechanism of the present invention.

[0043] Figure 7 This is Embodiment 1 of the small fruit net sleeving and packing machine of the present invention.

[0044] Figure 8 This is a schematic structural diagram of the rotary opening and closing device in Embodiment 1 of the small fruit net sleeving and packing machine of the present invention.

[0045] Figure 9 This is a schematic structural diagram of the fruit conveying mechanism in Embodiment 1 of the small fruit net sleeving and packing machine of the present invention.

[0046] Figure 10 This is Embodiment 2 of the small fruit net sleeving and packing machine of the present invention.

[0047] Figure 11 This is a schematic structural diagram of the rotary opening and closing device in Embodiment 2 of the small fruit net sleeving and packing machine of the present invention.

[0048] Figure 12 This is a schematic structural diagram of the fruit conveying mechanism in Embodiment 2 of the small fruit net sleeving and packing machine of the present invention.

[0049] Figure 13 This is a schematic structural diagram of the net sleeve cutting mechanism in the small fruit net sleeving and packing machine of the present invention.

[0050] Figure 14 This is a schematic structural diagram of the rotary opening and closing mechanism in the small fruit net sleeving and packing machine of the present invention.

[0051] Figure 15It is a schematic diagram of the cooperation between the rotating opening and closing piece and the rotating disk in the small-sized fruit net packing box packing machine of the present invention.

[0052] Figure 16 It is a schematic diagram of the shape of fruits entering the net sleeve in the small-sized fruit net sleeve box packing machine of the present invention.

[0053] Figure 17 It is a force diagram of the rotary opening and closing mechanism in the small-sized fruit net-covering box packing machine of the present invention.

[0054] Figure 18 This is a diagram showing the mesh of the small-sized fruit mesh box packing machine of the present invention in an open state.

[0055] Figure 19 This is a fruit bagging state diagram of the small-sized fruit net bag box packing machine of the present invention.

[0056] Among them: 1 frame, 2 net rack, 3 net feeding mechanism, 4 rotating opening and closing device, 5 fruit conveying mechanism, 6 fruit conveying mechanism, 7 fruit box, 8 net, 9 rotating shaft, 10 synchronous belt transmission device, 11 net cutting mechanism, 12 stepping motor, 13 motor, 111 bracket, 112 scissors, 113 nut, 114 screw, 115 servo motor, 31 active roller, 32 gear, 33 support column, 34 omnidirectional wheel, 35 active shaft, 36 bearing seat, 37 driven shaft, 38 brush, 39 limit ball, 311 groove, 41 rotary Rotating opening and closing mechanism, 42 rotating opening and closing frame, (381, 391) shaft, (382, 392) bearing seat, 411 cover, 412 rotating opening and closing piece, 413 rotating disk, 414 chassis, 415 rubber buffer sleeve, 416 shaft, 417 support rod, 411 long hole, 411-2 slot hole, 412-1 slider, 413-1 slide groove, 51 connecting box, 52 semicircular belt, 61 buffer mechanism, 62 transmission mechanism, 611 box, 612 electromagnetic push rod, 613 buffer rubber, 621 rubber, 612-1 buffer sponge. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0058] Small fruits refer to apples and fruits of similar size to apples, such as peaches, pears, mangoes, tangerines, oranges, etc.

[0059] Embodiment 1 of the net feeding mechanism

[0060] See also Figures 1 to 2The present invention provides a net feeding mechanism, comprising two active curved rollers 31 parallel to each other, a driving mechanism for driving the two active curved rollers to rotate synchronously, and a plurality of rotatable omnidirectional wheels 34 evenly arranged on the circumference of the top end of the support column 33; the omnidirectional wheel 34 is located between the two active curved rollers 31. The driving mechanism is composed of two mutually meshing gears 32, a driving shaft 35, a bearing seat 36 and a driven shaft 37. The driving shaft 35 and the driven shaft 37 are respectively connected to the two active curved rollers 31 concentrically, and the two ends of the driving shaft 35 and the driven shaft 37 are respectively connected by The bearing seat 36 is fixedly supported, and the two gears 32 are respectively connected to the driving shaft 35 and the driven shaft 37, wherein the driving shaft 35 is driven by the externally connected stepper motor 12 to drive the two gears 32 to realize the synchronous reverse movement of the two active curved rollers 31, and the net feeding speed of the net feeding mechanism 3 is matched with the net wrapping speed, which greatly improves the overall net wrapping speed of the equipment and improves the net wrapping efficiency. At the same time, a groove 311 is provided on the circumference of the active curved roller 31, and the omnidirectional wheel 34 cooperates with the groove 311 to drive the net sleeve 8 to move vertically downward along the support column 33.

[0061] Embodiment 2 of the net feeding mechanism

[0062] See also Figures 3 to 4 The present invention provides a net feeding mechanism, the main structure of which is the same as that of the net feeding mechanism in Embodiment 1, including Figure 1 As shown in the figure: two parallel active curved rollers 31, a driving mechanism for driving the two active curved rollers to rotate synchronously, and a plurality of rotatable omnidirectional wheels 34 evenly arranged on the circumference of the top of the support column 33; the omnidirectional wheel 34 is located between the two active curved rollers 31. The driving mechanism is composed of two mutually meshing gears 32, a driving shaft 35, a bearing seat 36 and a driven shaft 37. The driving shaft 35 and the driven shaft 37 are respectively connected to the two active curved rollers 31 concentrically, and the two ends of the driving shaft 35 and the driven shaft 37 are fixed by the bearing seat 36. Fixed support, two gears 32 are respectively connected to the driving shaft 35 and the driven shaft 37, wherein the driving shaft 35 is driven by the externally connected stepper motor 12 to drive the two gears 32 to realize the synchronous reverse movement of the two active curved rollers 31, and the net feeding speed of the net feeding mechanism 3 is matched with the net wrapping speed, which greatly improves the overall net wrapping speed of the equipment and improves the net wrapping efficiency. At the same time, a groove 311 is provided on the circumference of the active curved roller 31, and the omnidirectional wheel 34 cooperates with the groove 311 to drive the net sleeve 8 to move vertically downward along the support column 33.

[0063] The difference is that four brushes 38 are arranged on the outside of the bottom end of the support column 33 and are symmetrically distributed in a "well" shape; the brushes 38 are rotatably connected to the shafts 381 and 391, referring to Figure 5As shown, both ends of the shafts 381 and 391 are fixedly supported by the bearing seats 382 and 392. The four brushes here can limit the horizontal displacement of the mesh sleeve while pushing the mesh sleeve downward, thereby solving the problem of low conveying efficiency of the stretched mesh sleeve.

[0064] Embodiment 3 of the mesh feeding mechanism

[0065] Please refer to Figures 5 to 6 , the present invention provides a mesh feeding mechanism, whose main structure is similar to that of Embodiment 2 of the mesh feeding mechanism, including two mutually parallel driving rollers 31, a driving mechanism for driving the two driving rollers to rotate reversely synchronously, and a plurality of rotatable omnidirectional wheels 34 evenly arranged on the circumference of the top end of the spreading column 33; the omnidirectional wheels 34 are located between the two driving rollers 31. The driving mechanism is composed of two meshing gears 32, a driving shaft 35, a bearing seat 36 and a driven shaft 37. The driving shaft 35 and the driven shaft 37 are respectively concentrically and cooperatively connected with the two driving rollers 31, and both ends of the driving shaft 35 and the driven shaft 37 are fixedly supported by the bearing seat 36. The two gears 32 are respectively connected to the driving shaft 35 and the driven shaft 37. Among them, the driving shaft 35 is driven by an externally connected stepping motor 12 to drive the two gears 32 to realize the synchronous reverse rotation movement of the two driving rollers 31, and match the mesh feeding speed of the mesh feeding mechanism 3 with the mesh sleeving speed, greatly improving the overall mesh sleeving speed of the equipment and the mesh sleeving efficiency. At the same time, a groove 311 is provided on the circumference of the driving roller 31, and the cooperation between the omnidirectional wheel 34 and the groove 311 can drive the mesh sleeve 8 to move vertically downward along the spreading column 33.

[0066] Four brushes 38 are symmetrically distributed in a "well" shape outside the bottom end of the spreading column 33;

[0067] The difference is that in this Embodiment 3, two symmetrically distributed brushes 38 among the above four brushes 38 are replaced by two symmetrically distributed limiting balls 39. The two brushes can limit the horizontal displacement of the mesh sleeve while pushing the mesh sleeve downward, and the two limiting balls 39 only play the role of limiting the horizontal displacement of the mesh sleeve, thereby solving the problem of low conveying efficiency of the stretched mesh sleeve.

[0068] The shape of the omnidirectional wheel 34 in the above three embodiments of the mesh feeding mechanism can be a cylindrical shape with a curved surface as shown in Figure 1 or a disc shape as described in Figure 5 .

[0069] Embodiment 1 of the small fruit mesh sleeve packing machine

[0070] Please refer to Figures 5 to 6 , Figures 7 to 9 and Figures 13 to 19 , the present invention provides a small fruit mesh sleeve packing machine, including:

[0071] A frame 1, on the upper part of which a mesh sleeve frame 2 is provided;

[0072] The net feeding mechanism 3 is arranged on the upper part of the frame 1, and includes two active curved rollers 31 parallel to each other, a driving mechanism for driving the two active curved rollers to rotate synchronously and reversely, and a plurality of rotatable omnidirectional wheels 34 evenly arranged on the circumference of the top end of the support column 33; the omnidirectional wheel 34 is located between the two active curved rollers 31. The driving mechanism is composed of two mutually meshing gears 32, a driving shaft 35, a bearing seat 36 and a driven shaft 37. The driving shaft 35 and the driven shaft 37 are respectively connected to the two active curved rollers 31 concentrically, and the two ends of the driving shaft 35 and the driven shaft 37 are respectively connected by The bearing seat 36 is fixedly supported, and the two gears 32 are respectively connected to the driving shaft 35 and the driven shaft 37, wherein the driving shaft 35 is driven by the externally connected stepper motor 12 to drive the two gears 32 to realize the synchronous reverse movement of the two active curved rollers 31, and the net feeding speed of the net feeding mechanism 3 is matched with the net wrapping speed, which greatly improves the overall net wrapping speed of the equipment and improves the net wrapping efficiency. At the same time, a groove 311 is provided on the circumference of the active curved roller 31, and the omnidirectional wheel 34 cooperates with the groove 311 to drive the net sleeve 8 to move vertically downward along the support column 33.

[0073] Among them, the bottom end of the support column 33 is provided with two symmetrically distributed brushes 38 and two symmetrically distributed limiting balls 39 in a "well" shape. Figure 5 and 7 As shown, the two ends of the shafts 381 and 391 are fixedly supported on the frame 1 through bearing seats 382 and 392, respectively, wherein the two brushes 38 are driven to rotate by an externally connected motor 13. The two brushes here limit the horizontal displacement of the net sleeve and can move the net sleeve downward, and the two limit balls 39 only limit the horizontal displacement of the net sleeve, thereby solving the problem of low efficiency of the net sleeve transmission.

[0074] The net sleeve cutting mechanism 11 is located directly below the net feeding mechanism 3, and includes two motion mechanisms and scissors 112 symmetrically arranged in the same straight line direction; the motion mechanism is configured to drive the scissors 112 to open and close; the motion mechanism here includes a bracket 111, a screw rod 114 driven by a servo motor 115 and rotatably connected to the bracket 111, and a nut 113 cooperatively connected to the screw 114; the nut 113 is slidably connected to the bracket 111, and the scissors 112 are fixed on the nut 113. As the servo motor 115 drives the screw rod 114 to rotate, the nut 113 slides on the bracket 111 and drives the scissors 112 to realize the functions of opening and closing and realizing the scissors cutting.

[0075] The rotary opening and closing device 4 is arranged in the middle of the frame 1 and below the net sleeve shearing mechanism 11. It is provided with a rotary opening and closing frame 42 and a plurality of rotary opening and closing mechanisms 41. The rotary opening and closing frame 42 is a tubular structure of a polygonal steel structure and can rotate around the central axis. The rotary opening and closing mechanisms 41 are evenly arranged on the circumference of the rotary opening and closing frame 42. The rotary opening and closing mechanism 42 is configured to pick up the net sleeve 8 on the net sleeve feeding and conveying mechanism 3 and allow a single fruit to pass through and enter the net sleeve 8. Here, the rotary opening and closing mechanism 41 is successively provided with a cover 411, a plurality of rotary opening and closing pieces 412, a rotary disk 413, a chassis 414, and a rubber buffer sleeve 415 that share the same center from top to bottom. The plurality of rotary opening and closing pieces 412 can form a circumference, and a vertical support rod 417 is provided at one end close to the center. The rotary opening and closing piece 412 is slidably connected with the long slot 411-1 on the cover 411 through a shaft 416, and the support rod 417 passes above the cover 411. The chassis 414 is fixedly connected with the cover 411. The rubber buffer sleeve 415 is a conical shell structure and is arranged below the chassis 414. The rotary disk 413 is configured to rotate along the slot 411-2 between the circumference of the cover 411 and the chassis (414) and drive the rotary opening and closing piece 412 to move.

[0076] The fruit conveying mechanism 5 is arranged on one side of the rotary opening and closing device 4 and is configured to continuously load fruits into the rotary opening and closing mechanism 41; and

[0077] The fruit transporting mechanism 6 is arranged at the bottom of the frame 1 and is configured to transport fruits into the fruit box 7. It includes a buffer mechanism 61 and a conveying mechanism 62. The buffer mechanism 61 is configured to buffer the fruits onto the conveying mechanism 62. Here, the buffer mechanism 61 includes a box body 611 and buffer rubbers 613 arranged inside the box body. A plurality of buffer rubbers 613 are arranged at the entrance where the fruits enter the box body 611. When the fruits contact the buffer rubbers 613 at the entrance, the fruits fall onto the conveying mechanism 62 under the action of the buffer rubbers 613.

[0078] Among them, both the fruit conveying mechanism 5 and the fruit transporting mechanism 6 adopt a rotary chain transmission belt to replace the plate transmission belt, solving the problems of tremor, instability, and chain plate sagging during the process of transporting heavy objects by the plate transmission belt and improving the smoothness of transportation; a plurality of semi-circular belts 52 for pushing fruits are evenly installed on the conveyor belt in the fruit conveying mechanism 5.

[0079] Preferably, a regular n-sided groove 413-1 is provided on the rotary disk 413, and the number of sides n is the same as the number of rotary opening and closing pieces 412; a slider 412-1 is provided at one end of the rotary opening and closing piece 412 away from the center; the slider 412-1 is slidably connected with the groove 413-1.

[0080] Preferably, the length of the support rod 417 is 1 / 2 of the length of the net sleeve 8.

[0081] Preferably, a support frame 411 with a shaft hole 422 is arranged inside the rotary opening and closing frame 42. The rotary opening and closing frame 42 is supported in the middle of the machine frame 1 through a rotating shaft 9 and is driven by a synchronous belt transmission device 10 connected externally to rotate the rotating shaft 9, thereby driving the rotary opening and closing frame 42 to rotate. The rotating shaft 9 is connected in cooperation with the shaft hole 422. Among them, the synchronous belt transmission device 10 is a commonly used device in the prior art, which can make the net covering speed match the sorting speed, avoid the situation of multiple machines covering the sorted fruits with nets, and reduce the energy consumption and the costs of equipment purchase, maintenance, etc.

[0082] Preferably, strip-shaped rubbers 621 are arranged on both sides of the conveying mechanism 62. The rubbers 621 can prevent the fruits from rolling to the outside and causing damage to the apples.

[0083] Embodiment 2 of the small fruit net covering and boxing machine

[0084] Please refer to Figures 1 to 2 、 Figures 10 to 19 This invention provides a small fruit net covering and boxing machine, including:

[0085] A machine frame 1 and a net sleeve frame 2 arranged on the upper part of the machine frame 1. It further includes:

[0086] A net feeding mechanism 3, arranged on the upper part of the machine frame 1, configured to receive the net sleeve 8 on the net sleeve frame 2 and vertically expand the net sleeve 8; among them, the net feeding mechanism 3 includes two mutually parallel active curved rollers 31, a driving mechanism for driving the two active curved rollers to reverse synchronously, and a plurality of rotatable omnidirectional wheels 34 evenly arranged on the circumference of the top end of the expanding column 33; the omnidirectional wheels 34 are located between the two active curved rollers 31 and are configured to drive the net sleeve 8 to move vertically downward along the expanding column 33; the driving mechanism is composed of two meshing gears 32, a driving shaft 35, a bearing seat 36, and a driven shaft 37. The driving shaft 35 and the driven shaft 37 are respectively concentrically connected in cooperation with the two active curved rollers 31, and both ends of the driving shaft 35 and the driven shaft 37 are fixedly supported through the bearing seat 36. The two gears 32 are respectively connected to the driving shaft 35 and the driven shaft 37. Among them, the driving shaft 35 is driven by a stepping motor 12 connected externally to drive the two gears 32 to realize the synchronous reverse movement of the two active curved rollers 31, and match the net feeding speed of the net feeding mechanism 3 with the net covering speed, greatly improving the overall net covering speed of the equipment and the net covering efficiency. Here, a groove 311 is provided on the circumference of the active curved roller 31, and the groove 311 is in cooperation with the omnidirectional wheel 34 and drives the net sleeve 8 to move vertically downward; the diameter of the bottom end of the expanding column 33 gradually increases along the direction away from the omnidirectional wheel 34, which can ensure that the lower port of the net sleeve 8 is expanded and can be sleeved on the rotary opening and closing mechanism 41.

[0087] The rotary opening and closing device 4 is arranged in the middle of the frame 1. It is provided with a rotary opening and closing frame 42 and a plurality of rotary opening and closing mechanisms 41. The rotary opening and closing frame 42 is a tubular structure that can rotate around its central axis. The rotary opening and closing mechanisms 41 are evenly arranged on the circumference of the rotary opening and closing frame 42. The rotary opening and closing mechanism 42 is configured to pick up the mesh sleeve 8 on the mesh feeding and conveying mechanism 3 and allow a single fruit to pass through and enter the mesh sleeve 8. Here, the rotary opening and closing mechanism 41 is sequentially provided with a cover 411, a plurality of rotary opening and closing blades 412, a rotary disk 413, a chassis 414, and a rubber buffer sleeve 415 that share the same center from top to bottom. The plurality of rotary opening and closing blades 412 can form a circumference, and each rotary opening and closing blade 412 is provided with a vertical support rod 417 at one end close to the center. The rotary opening and closing blade 412 is slidably connected with the long slot 411-1 on the cover 411 through a shaft 416, and the support rod 417 passes above the cover 411. The chassis 414 is fixedly connected to the cover 411. The rubber buffer sleeve 415 is a conical shell structure and is arranged below the chassis 414. The rotary disk 413 can rotate along the slot 411-2 between the circumference of the cover 411 and the chassis 414 and drive the rotary opening and closing blade 412 to move, realizing the opening and closing of the rotary opening and closing blade 412. Among them, the rubber buffer sleeve 415 plays a buffering role to prevent the fruits from being damaged by falling and the fruits that do not fall accurately from falling out.

[0088] The fruit conveying mechanism 5 is arranged on one side of the rotary opening and closing device 4 and is configured to continuously load fruits into the rotary opening and closing mechanism 41; and

[0089] The fruit delivery mechanism 6 is arranged at the bottom of the frame 1 and is configured to deliver fruits into the fruit box 7. It includes a buffer mechanism 61 and a conveying mechanism 62. The buffer mechanism 61 is configured to buffer and push the fruits onto the conveying mechanism 62. Here, the buffer mechanism 61 includes a box body 611; the box body 611 is arranged at one end of the conveying mechanism 62; the box body 611 is open at the top and is open on the side close to the conveying mechanism 62; a buffer rubber 613 is also arranged inside the box body 611, and the buffer rubber 613 can reduce the impact generated during the falling process of the fruits.

[0090] Among them, both the fruit conveying mechanism 5 and the fruit delivery mechanism 6 adopt a rotary chain transmission belt to replace the plate transmission belt, solving the problems of vibration, instability, and chain plate sagging during the process of conveying heavy objects by the plate transmission belt and improving the smoothness of conveying; a plurality of receiving boxes 51 for loading fruits are evenly installed on the conveyor belt in the fruit conveying mechanism 5.

[0091] Preferably, a regular n-sided groove 413-1 is provided on the rotary disk 413, and the number of sides n is the same as the number of rotary opening and closing blades 412; a slider 412-1 is provided at one end of the rotary opening and closing blade 412 away from the center; the slider 412-1 is slidably connected with the groove 413-1.

[0092] Preferably, the length of the support rod 417 is 1 / 2 of the length of the mesh sleeve 8.

[0093] Preferably, a support frame 411 with a shaft hole 422 is arranged inside the rotary opening and closing frame 42. The rotary opening and closing frame 42 is supported in the middle of the bracket 1 by a rotating shaft 9, and the rotating shaft 9 is driven to rotate by a synchronous belt transmission device 10 connected externally, so as to drive the rotary opening and closing frame 42 to rotate. The rotating shaft 9 is connected with the shaft hole 422 in a matching manner. Among them, the synchronous belt transmission device 10 can make the net covering speed match the sorting speed, avoid the situation that multiple machines cover the sorted fruits with nets, and reduce the energy consumption and the costs such as equipment purchase and maintenance.

[0094] Preferably, the buffer mechanism 61 further includes an electromagnetic push rod 612. The electromagnetic push rod 612 is installed on the side far away from the conveying mechanism 62, and a buffer sponge 612-1 is also sleeved on the electromagnetic push rod 612 to prevent damage to the fruits.

[0095] Preferably, strip-shaped rubber 621 is added on both sides of the conveying mechanism 62 to buffer and prevent the fruits from turning out.

[0096] More specifically, the working principle of the rotary opening and closing mechanism 41 is as Figures 14 to 17 , there are two strip-shaped protrusions on the rotary disk 413. When the rotary opening and closing mechanism 41 moves with the rotary opening and closing frame and passes through the limit rod fixed on the frame 1, it is equivalent to giving a rotating force F to the stationary rotary disk 413 (as Figure 17 shown). The rotary disk 413 is forced to rotate along the slot 411-2 between the cover 411 and the chassis 414 on the circumference of the cover 411 and drives the rotary opening and closing piece 412 to move, and the support rod 417 realizes opening and closing.

[0097] When the rotary opening and closing mechanism 41 rotates to directly below the net feeding mechanism 3, the support rod 417 is in a closed state. After the support rod 417 picks up the mesh sleeve 8, the rotary opening and closing mechanism 41 continues to rotate. The protrusion on the rotary disk 413 is resisted by the limit rod on the frame 1, so that the rotary disk 413 drives the support rod 417 to open, and the mesh sleeve 8 is opened. The opened state is as Figure 18 shown; then it keeps moving to directly above the fruit conveying mechanism 6. The fruit enters the mesh sleeve 8 through the rubber buffer sleeve 415 and falls onto the fruit conveying mechanism 6 to complete the fruit net covering; then the rotary opening and closing mechanism 41 continues to rotate. The protrusion on the rotary disk 413 is resisted by the limit rod on the frame 1, so that the support rod 417 is closed. The support rod 417 moves to directly below the net feeding mechanism 3 in a closed state, and then the above net covering process is cycled. The limit rod and the frame 1 are integrally designed, and the concept of the whole process design is as described above.

[0098] Since the length of the support rod 417 on the rotary opening and closing piece 412 is 1 / 2 of the length of the mesh sleeve 8, the shape of the mesh sleeve 8 is as Figure 16As shown, the net sleeve 8 is in an open state at the entrance for the fruit, and in a contracting trend at the other 1 / 2 part. During the process of the fruit falling freely, it will be subject to the tension force of the lower part of the net sleeve 8, causing the fruit to fit closely with the net sleeve 8, and increasing the friction between the fruit and the net sleeve 8. During the process of the fruit falling, the fruit drives the net sleeve 8 to fall off from the rotary opening and closing mechanism 41 to complete the net covering and fall into the box body 611 on the buffer mechanism 61. The buffer rubber 613 provided on the inner side of the box body 611 plays a buffering role for the fruit, avoiding damage to the fruit when it falls. Then, adjust the rotation speed of the rotary opening and closing mechanism 41 to match the external fruit sorting speed to ensure that the fruit net covering is carried out continuously according to the above process. As Figure 17 As shown, when a clockwise force is applied, the rotary opening and closing piece 412 opens and closes. On the contrary, the rotary opening and closing piece 412 contracts. Since the rotary opening and closing piece 412 is slidably connected with the long hole 411-1 on the cover 411 through the shaft 416, the length of the long hole 411-1 can control the opening and closing range of the rotary opening and closing piece 412, so that the support rod 417 can open and close for net covering of fruits of different sizes.

[0099] The present invention can be outlined in other specific forms without departing from the spirit or main features of the present invention. Therefore, in any aspect, the above embodiments of the present invention can only be regarded as an illustration of the present invention and cannot limit the present invention. The claims point out the scope of the present invention, while the above description does not point out the scope of the present invention. Therefore, any change within the meaning and scope equivalent to the claims of the present invention should be considered to be included within the scope of the claims of the present invention.

Claims

1. A small fruit net sleeve packing machine, characterized in that, Including: A frame (1) with a net sleeve frame (2) arranged on its upper part; A net feeding mechanism (3); the net feeding mechanism (3) is arranged on the upper part of the frame (1) and is configured to receive the net sleeve (8) on the net sleeve frame (2); A net sleeve cutting mechanism (11), located directly below the net feeding mechanism (3), which includes two moving mechanisms symmetrically arranged in the same straight line direction and scissors (112); the moving mechanism is configured to drive the scissors (112) to open and close; A rotary opening and closing device (4), arranged in the middle of the frame (1) and below the net sleeve cutting mechanism (11), which is provided with a rotary opening and closing frame (42) and a plurality of rotary opening and closing mechanisms (41). The rotary opening and closing frame (42) is a tubular structure that can rotate around its central axis, and the rotary opening and closing mechanisms (41) are evenly arranged on the circumference of the rotary opening and closing frame (42); the rotary opening and closing mechanism (41) is configured to pick up the net sleeve (8) on the net feeding mechanism (3) and allow a single fruit to pass through and enter the net sleeve (8); A fruit transporting mechanism (5), arranged on one side of the rotary opening and closing device (4), is configured to continuously load fruits into the rotary opening and closing mechanism (41); And A fruit conveying mechanism (6), arranged at the bottom of the frame (1), is configured to convey fruits into a fruit box (7), which includes a buffer mechanism (61) and a conveying mechanism (62). The buffer mechanism (61) is configured to buffer fruits onto the conveying mechanism (62); The rotary opening and closing mechanism (41) is sequentially provided with a cover (411), a plurality of rotary opening and closing pieces (412), a rotary disk (413), a chassis (414), and a rubber buffer sleeve (415) that share the same center from top to bottom; the plurality of rotary opening and closing pieces (412) can form a circumference, and a vertical support rod (417) is provided at one end close to the center. The rotary opening and closing piece (412) is slidably connected to the long hole (411-1) on the cover (411) through a rotary opening and closing mechanism shaft (416), and the support rod (417) passes above the cover (411); the chassis (414) is fixedly connected to the cover (411); the rubber buffer sleeve (415) is a conical shell structure and is arranged below the chassis (414); the rotary disk (413) is configured to rotate along the slot hole (411-2) between the circumference of the cover (411) and the chassis (414) and drive the rotary opening and closing piece (412) to move.

2. The small fruit net sleeve packing and boxing machine according to claim 1, characterized in that, The net feeding mechanism comprises two active curved rollers (31) parallel to each other, a driving mechanism for driving the two active curved rollers (31) to rotate synchronously and reversely, and a plurality of rotatable omnidirectional wheels (34) evenly distributed on the circumference of the top end of the support column (33); the active curved roller (31) is provided with a groove (311) on the circumference; the omnidirectional wheel (34) is located between the two active curved rollers (31); the diameter of the bottom end of the support column (33) gradually increases in a direction away from the omnidirectional wheel (34); the omnidirectional wheel (34) is configured to cooperate with the groove (311) on the active curved roller (31) and drive the net sleeve (8) to move vertically downward along the support column (33); Four brushes (38) are arranged externally at the bottom end of the support column (33) and are symmetrically distributed in a "well" shape; the brushes (38) are configured to be rotatably fixed and supported by a first horizontal axis (381), a second horizontal axis (391), a first horizontal bearing seat (382) at both ends of the first horizontal axis (381), and a bearing seat (392) at both ends of the second horizontal axis (391).

3. The small fruit net sleeve packing machine according to claim 2, characterized in that, Two of the four brushes (38) that are symmetrically distributed can be replaced by two symmetrically distributed limiting balls (39).

4. The small fruit net sleeve packing and boxing machine according to claim 2, characterized in that, The driving mechanism comprises a driving shaft (35), a driving crankshaft bearing seat (36), a driven shaft (37) and two mutually meshing gears (32); the driving shaft (35) and the driven shaft (37) are respectively connected to the two driving crankshafts (31) in a concentric manner, and their respective ends are fixedly supported by the driving crankshaft bearing seat (36); the two gears (32) are respectively connected to the driving shaft (35) and the driven shaft (37); the driving shaft (35) is configured to be driven by an externally connected stepping motor (12).

5. The small fruit net sleeve packing machine according to claim 1, characterized in that, The motion mechanism comprises a bracket (111), a screw rod (114) driven by a servo motor (115) and rotatably connected to the bracket (111), and a nut (113) cooperatively connected to the screw rod (114); the nut (113) is slidably connected to the bracket (111), and the scissors (112) are fixed on the nut (113).

6. The small fruit net sleeve packing machine according to claim 1, characterized in that, The length of the support rod (417) is 1 / 2 of the length of the net sleeve (8).

7. The small fruit net sleeve packing and boxing machine according to claim 1, characterized in that, The buffer mechanism (61) comprises a box body (611) and a buffer rubber (613) arranged in the box body.

8. The small fruit net sleeve packing and boxing machine according to claim 1, characterized in that, Strip-shaped rubber (621) is provided on both sides of the transmission mechanism (62).

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