Fresh litchi branch removing device

Abstract

The application discloses a fresh litchi branch removing device, which comprises a lifting and uniform feeding mechanism, a roller shaft type branch removing mechanism, a pushing mechanism and a branch conveying mechanism. The lifting and uniform feeding mechanism is used for uniformly lifting and feeding litchi with branches into the roller shaft type branch removing mechanism. The roller shaft type branch removing mechanism comprises a rack, a plurality of roller shafts arranged on the rack, an elastic cutter assembly arranged between two adjacent roller shafts and used for cutting the branches of litchi, and a branch removing driving mechanism used for driving the movement of the roller shafts. The pushing mechanism is used for pushing the litchi on the roller shaft type branch removing mechanism to move and separate the litchi fruits from the branches. The branch conveying mechanism is used for conveying the separated branches. The device can automatically remove the branches of litchi, has high working efficiency and low cost.

Description

Technical Field

[0001] This invention relates to the field of automated production technology, specifically to a device for removing branches from fresh lychees. Background Technology

[0002] Lychee farmers typically harvest lychees with small branches attached. When processing and packaging lychees for sale, these branches need to be removed to separate the fruit into individual berries, making them easier to transport and store. Currently, this branch removal is usually done manually, resulting in low efficiency, high workload, and high costs. The lychee harvest season is characterized by high temperatures and humidity, and the harvest is concentrated in one period. Lychees have a short shelf life, and manually removing branches is time-consuming. If lychees are not processed and sold promptly, they are highly susceptible to spoilage, leading to significant losses. Therefore, there is an urgent need for a fresh lychee branch removal device. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned problems and provide a device for removing branches from fresh lychees. This device can automatically remove branches from lychees, with high working efficiency and low cost.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A device for removing branches from fresh lychees includes a lifting and equalizing mechanism, a roller-type branching mechanism, a pushing mechanism, and a branch conveying mechanism. The lifting and equalizing mechanism evenly lifts and conveys lychees with branches to the roller-type branching mechanism. The roller-type branching mechanism includes a frame, multiple rollers mounted on the frame, an elastic cutting blade assembly positioned between adjacent rollers for cutting the lychee branches, and a branching drive mechanism for driving the rollers. The pushing mechanism pushes the lychees on the roller-type branching mechanism to separate the lychee fruit from the branches. The branch conveying mechanism transports the separated branches.

[0006] The working principle of the above-mentioned fresh lychee detwig removal device is as follows:

[0007] During operation, lychees with branches (including the fruit and branches) are lifted and conveyed upwards by a material-equalizing mechanism to a roller-type de-branching mechanism. This mechanism also ensures even distribution of the material, preventing clumps of lychees from entering the de-branching mechanism and affecting the de-branching effect. Once inside, the lychees fall onto the rollers. A de-branching drive mechanism then rotates two adjacent rollers in opposite directions. The branches enter between the rollers and the elastic cutting blade assembly. The elasticity of the blade assembly adapts to different branch sizes, clamping and pulling the branches. With the combined rotation of the two rollers, the elastic cutting blade assembly cuts the branches. At this point, the push... The feeding mechanism pushes the lychees (including lychees with branches removed and lychees with branches) to prevent them from blocking the flow channel during the pulling process between the roller and the elastic cutter assembly. Some lychees that enter between the roller and the elastic cutter assembly but whose branches are not cut by the elastic cutter assembly generate a certain shearing force between the lychee fruit and the branch as the feeding mechanism pushes the lychee fruit with branches. This simulates the action of a human hand breaking the branch from the lychee stem, which helps to separate the lychee fruit from the branch. The feeding mechanism continues to push the lychee fruit on the flow channel (roller) until the lychee fruit falls from the end of the roller and is collected by the device from the discharge port.

[0008] In a preferred embodiment of the present invention, a plurality of rollers are arranged along a wavy line, the elastic cutter assembly includes an arc-shaped cutter and a tension spring, one end of the tension spring is connected to the frame and the other end is connected to the arc-shaped cutter; the elastic force of the tension spring causes the arc-shaped cutter to press against two adjacent rollers; the debranching drive mechanism includes a servo motor and a gear set, and two adjacent rollers reciprocate in opposite directions under the drive of the servo motor via the gear set. In the above structure, two adjacent rollers are blocked by a circular arc cutter, which is pressed tightly against the two adjacent rollers by the tension of the tension spring. When the servo motor drives the gear set to move, causing the two adjacent rollers to rotate in opposite directions, the branches are drawn into the gap between the rollers and the circular arc cutter under the action of clamping force and friction. That is, the branches will enter between the rollers and the circular arc cutter and be clamped. Depending on the thickness of the branches, the circular arc cutter is pushed up to the corresponding gap, so it can accommodate branches of different thicknesses. When the two adjacent rollers rotate in opposite directions, the circular arc cutter jams the branches and cuts them.

[0009] Furthermore, the elastic cutter assembly also includes a guide rod disposed between the tension spring and the arc-shaped cutter; the head of the guide rod is connected to the arc-shaped cutter, and the tail of the guide rod is connected to the tension spring; the head of the guide rod is the same size as the opening of the arc-shaped cutter, and the head of the guide rod is fixed at the opening of the arc-shaped cutter. In the above structure, the two sides of the opening of the arc-shaped cutter are cutting edges. With the above structure, the elastic force of the tension spring causes the cutting edges on both sides of the opening of the arc-shaped cutter to be in close contact with the two adjacent rollers. The guide rod is located between the two adjacent rollers and plays a guiding role, which can effectively prevent the cutting edges of the arc-shaped cutter from rotating and failing to be in close contact with the surfaces of the two rollers when the two adjacent rollers reciprocate; in addition, the head of the guide rod is the same size as the opening of the arc-shaped cutter, which provides support for the two sides of the opening of the arc-shaped cutter and can effectively prevent the arc-shaped cutter from deforming during operation.

[0010] Preferably, the roller is inclined downwards. The purpose is to make the roller form a certain angle with the horizontal, so that under the action of gravity, the lychee can move better along the axis of the roller.

[0011] Preferably, the lifting and equalizing mechanism includes a lifting frame, a feeding trough located at the lower end of the lifting frame, a lifting belt mounted on the lifting frame for conveying lychees from the feeding trough to the roller-type debranching mechanism, and a lifting drive motor for driving the lifting belt. In the above structure, the higher end of the roller is the beginning end, and the lower end is the end end; lychees with branches are poured into the feeding trough, and the lifting drive motor drives the lifting belt to move, so that the lifting belt evenly conveys the lychees to the beginning end of the roller.

[0012] Furthermore, the lifting belt is inclined and equipped with baffles. The purpose is that, under the influence of gravity, the lychees with branches can be laid in a single layer on the lifting belt, preventing them from piling up and being unevenly spread on the roller-type debranching mechanism.

[0013] Preferably, during the reciprocating motion of two adjacent rollers, the branches are sucked into the space between the rollers and the arc-shaped cutter. The sucked-in branches will push up the arc-shaped cutter, accommodating branches of different thicknesses. The arc-shaped cutter has a certain clamping and cutting effect on the branches. When the two adjacent rollers move in opposite directions, they can clamp the branches and cut off part of them.

[0014] Preferably, the pushing mechanism is located above the roller-type debranching mechanism. The pushing mechanism includes a pushing belt mounted on the frame and a pushing drive motor for driving the pushing belt. The pushing belt is provided with multiple pushing baffles for pushing the lychees. Using the above structure, when the lychees fall into the roller-type branching mechanism, the branches are sucked into the space between the roller and the arc-shaped cutter. The two adjacent rollers rotate in opposite directions, and the blade of the arc-shaped cutter catches and cuts the branches, severing them. At this time, the pusher drive motor drives the pusher belt to move, which in turn drives the pusher baffle to move. Some lychees that have entered the space between the roller and the arc-shaped cutter and have not been cut by the arc-shaped cutter are pushed along the axis of the roller by the pusher baffle. During the process of pushing the lychees, a certain shearing force is formed between the lychee fruit and the branches. Under the action of shearing force, the lychee fruit and the branches break off from the weak point where they are joined at the stem. Under the suction of the rotating roller, the branches fall through the gap and land on the branch conveying mechanism. The lychee fruit (the lychee with the branches removed) moves to the end of the roller under the pusher baffle and its own gravity.

[0015] Furthermore, multiple rollers arranged along the wavy line form notches above them, and the shape of the pusher baffle is adapted to the notches. The purpose is that the pusher baffle conforms to the notches of the rollers to ensure that there are no blind spots when pushing the material; and the pusher baffle is made of soft rubber to prevent the baffle from scratching the lychee when the branch is stuck.

[0016] Preferably, the feeding mechanism further includes two feeding drive shafts mounted on the frame, with the feeding belt positioned between the two feeding drive shafts, and the feeding drive motor connected to one of the feeding drive shafts. The feeding drive shaft has a groove, and the feeding belt has a guide protrusion that engages with the groove. The purpose of this is to engage the guide protrusion with the groove, preventing the feeding belt from moving left or right, thus limiting the movement of the feeding belt.

[0017] Preferably, the branch conveying mechanism is located below the rollers. The branch conveying mechanism includes a belt conveyor assembly and a branch conveying drive motor. The belt conveyor assembly includes two branch conveying drive shafts and a branch conveying belt disposed between the two shafts. The branch conveying drive motor is connected to one of the branch conveying drive shafts. With this mechanism, the removed branches fall from between the rollers onto the branch conveying belt. The branch conveying drive motor drives the branch conveying drive shafts to rotate, causing the branch conveying belt to move and collect the branches. The branch conveying belt is also equipped with baffles to better convey the branches.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. The fresh lychee detwig removal device of the present invention, by setting up a lifting and equalizing mechanism, a roller detwig removal mechanism, a pushing mechanism and a twig conveying mechanism, can realize the automatic removal of lychee twigs, with high working efficiency, low cost, saving labor, ensuring timely processing of lychees and preventing lychee spoilage.

[0020] 2. In the fresh lychee detent device of this invention, the arc-shaped cutter between two adjacent rollers is floating. When the branch is sucked into the space between the two adjacent rollers, the arc-shaped cutter is lifted to adapt to the thickness of the branch. The two adjacent rollers move back and forth in opposite directions, continuously sucking in and cutting the branch. The pushing mechanism above the two adjacent rollers effectively prevents the lychees with branches from rolling during the detent process, thus avoiding material accumulation. The pushing baffle is shaped according to the notch of the rollers to ensure no dead corners during pushing. During the pushing process, a certain shearing force is formed between the lychee fruit and the branch, simulating the breaking of the branch by hand from the stem. The pushing baffle is made of soft material, which plays a certain buffering role and prevents the pushing force of the pushing baffle from scratching the lychee when the branch is sucked in. Attached Figure Description

[0021] Figures 1-2 This is a front view schematic diagram of a device for removing branches from fresh lychees according to the present invention.

[0022] Figure 3 This is a cross-sectional schematic diagram of a fresh lychee detent device according to the present invention.

[0023] Figures 4-6 This is a schematic diagram illustrating the working principle of the roller-type debranching mechanism in this invention.

[0024] Figure 7 This is a schematic diagram of the arc-shaped cutter in this invention.

[0025] Figure 8 This is a distribution diagram of the roller shaft and the arc-shaped cutter in this invention. Detailed Implementation

[0026] To enable those skilled in the art to fully understand the technical solutions of the present invention, the present invention will be further described below in conjunction with embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0027] See Figures 1-4This embodiment discloses a device for removing branches from fresh lychees, including a lifting and equalizing mechanism 1, a roller-type branch removal mechanism 2, a pushing mechanism 3, and a branch conveying mechanism 4. The lifting and equalizing mechanism 1 is used to evenly lift and convey lychees with branches to the roller-type branch removal mechanism 2, which not only achieves the conveying of lychees but also provides a uniform distribution effect, preventing clumps of lychees from entering the roller-type branch removal mechanism 2 and affecting the branch removal effect. The lychees with branches include lychee fruits and branches 501. The roller-type branch removal mechanism 2 includes a frame 205, multiple rollers 201 mounted on the frame 205, an elastic cutting blade assembly positioned between adjacent rollers 201 for cutting the lychee branches 501, and a branch removal drive mechanism for driving the rollers 201. The branch removal drive mechanism can drive adjacent rollers 201 to reciprocate in opposite directions. The movement of the roller 201, in conjunction with the action of the elastic cutting blade assembly, cuts the branch 501 and removes it through clamping and pulling. The roller-type branch removal mechanism 2 is provided with a flow channel, along which the lychee moves. The pushing mechanism 3 is used to push the lychee located on the roller-type branch removal mechanism 2 to prevent the lychee from blocking the flow channel during the pulling process of the roller 201. During the process of pushing the lychee 5, a certain shearing force is formed between the lychee fruit and the branch 501, simulating the breaking of the branch 501 by hand from the stem of the lychee 5, thus achieving the effect of separating the lychee fruit from the branch 501. The removed branch 501 will fall into the branch conveying mechanism 4, that is, the branch conveying mechanism 4 can catch the branch 501 falling from the roller-type branch removal mechanism 2. The branch conveying mechanism 4 is used to transport the separated branch and deliver the branch 501 out of the device.

[0028] See Figures 1-8Multiple rollers 201 are arranged along a wavy line; in this embodiment, there are 9 rollers 201, which are divided into two rows in the vertical direction. The two rows of rollers 201 are staggered to form a wavy line distribution. The upper row has 5 rollers and the lower row has 4 rollers. The center line connecting three adjacent rollers 201 forms a triangle, which is intended to facilitate the adsorption of branches between two adjacent rollers 201. The elastic cutter assembly includes an arc-shaped cutter 202 and a tension spring 203. One end of the tension spring 203 is connected to the frame 205, and the other end is connected to the arc-shaped cutter 202. The elastic force of the tension spring 203 causes the arc-shaped cutter 202 to press against the two adjacent rollers 201. The debranching drive mechanism includes a base plate 206, a servo motor 207, and a gear set 208. The base plate 206 is mounted on the frame 205, and the servo motor 207 is mounted on the base plate 206. The two adjacent rollers 201 reciprocate in opposite directions under the drive of the servo motor 207 via the gear set 208. When the servo motor 207 provides power, the amplitude of the opposite rotation and the reciprocating frequency can be adjusted by programming. In the above structure, two adjacent rollers 201 are blocked by an arc-shaped cutter 202, which is pressed tightly against the two adjacent rollers 201 by the tension spring 203; when the servo motor 207 drives the gear set 208 to move, causing the two adjacent rollers 201 to rotate in opposite directions (rotation direction as shown in the figure), Figure 5 As shown by the arrow, the branch is drawn into the gap between the roller 201 and the arc-shaped cutter 202 under the action of clamping force and friction. That is, the branch enters between the roller 201 and the arc-shaped cutter 202 and is clamped. Depending on the thickness of the branch, the arc-shaped cutter 202 is pushed up to create a corresponding gap, thus accommodating branches of different thicknesses. When two adjacent rollers 201 rotate in opposite directions (rotation direction as shown by the arrow), the branch is drawn into the gap between the roller 201 and the arc-shaped cutter 202 and clamped. Depending on the thickness of the branch, the arc-shaped cutter 202 is pushed up to create a corresponding gap, thus accommodating branches of different thicknesses. Figure 6 (As shown by the arrow), the arc-shaped cutter 202 clamps the branch and cuts it.

[0029] like Figure 5 As shown, when the lychee 5 falls into the roller-type branching mechanism 2, when two adjacent rollers 201 move towards each other, the branch 501 is sucked between the roller 201 and the arc-shaped cutter 202. During the process of pushing the lychee 5, the pushing mechanism 3 forms a certain shearing force between the lychee fruit and the branch 501, which simulates the human hand breaking the branch 501 from the stem of the lychee 5.

[0030] like Figure 6 As shown, two adjacent rollers 201 rotate in opposite directions, and the blade of the arc-shaped cutter 202 catches the branch 501 and cuts the branch 501. Some of the lychee branches 501 are cut off and fall. At the same time, under the push of the feeding mechanism 3, a certain shearing force is formed between the lychee fruit and the branch 501, and some of the uncut lychee branches 501 are broken off by the shearing force.

[0031] See Figures 1-8The arc-shaped cutter 202 is tightly attached to the two rollers 201 under the pre-tension force of the tension spring 203. The rollers 201 have a rubber coating on their outer surface. The length of the arc-shaped cutter 202 is the same as or less than the rubber coating length of the rollers 201, while the length of the rollers 201 is greater than the rubber coating length. The elastic cutter assembly also includes a guide rod 2022 disposed between the tension spring 203 and the arc-shaped cutter 202. The head of the guide rod 2022 is connected to the arc-shaped cutter 202, and the tail of the guide rod 2022 is connected to the tension spring 203. The head of the guide rod 2022 has the same opening size as the arc-shaped cutter 202, and the head of the guide rod 2022 is fixed at the opening of the arc-shaped cutter 202. In the above structure, the two sides of the opening of the arc-shaped cutter 202 are blades 2021. With this structure, the elastic force of the tension spring 203 causes the blades 2021 on both sides of the opening of the arc-shaped cutter 202 to be in close contact with the two adjacent rollers 201. The guide rod 2022 is flat and is inserted between the two adjacent rollers 201 to play a guiding role. It can effectively prevent the blades 2021 of the arc-shaped cutter 202 from rotating and failing to be in close contact with the surfaces of the two rollers 201 when the two adjacent rollers 201 reciprocate. In addition, the head of the guide rod 2022 is the same size as the opening of the arc-shaped cutter 202, and plays a supporting role on both sides of the opening of the arc-shaped cutter 202, which can effectively prevent the arc-shaped cutter 202 from deforming during operation.

[0032] See Figures 1-8 The guide rod 2022 is inclined, and two adjacent guide rods 2022 are symmetrically arranged. The guide rod 2022 is adapted to the two adjacent rollers 201, which ensures the quality of branch removal and makes the structure more regular.

[0033] See Figures 1-8 The surface of the roller 201 is smooth to prevent excessive friction from damaging the lychees. The roller 201 is inclined downwards, specifically, inclined downwards away from the lifting and equalizing mechanism 1. The purpose is to make the roller 201 form a certain angle with the horizontal, with the higher end of the roller 201 being the beginning end and the lower end being the end end; the beginning end is the feeding position and the end end is the discharging position, and the feeding position is high and the discharging position is low. Under the action of gravity, the lychees can be better moved along the axis of the roller 201, that is, the lychee fruits can roll to the lower position of the roller 201 (the discharging position).

[0034] See Figures 1-2The lifting and equalizing mechanism 1 includes a lifting frame 103, a feeding trough 101 disposed at the lower end of the lifting frame 103, a lifting belt 102 disposed on the lifting frame 103 for conveying lychees in the feeding trough 101 to the roller-type debranching mechanism 2, and a lifting drive motor 104 for driving the lifting belt 102. In the above structure, lychees 5 with branches are poured into the feeding trough 101, the lifting drive motor 104 provides power to the lifting belt 102, the lifting drive motor 104 drives the lifting belt 102 to move, and the lifting belt 102 evenly conveys the lychees to the beginning end (feeding position) of the roller 201.

[0035] See Figures 1-2 The lifting belt 102 is inclined and equipped with baffles; multiple baffles are evenly distributed along the lifting belt 102. The purpose is that, under the action of gravity and with the obstruction of the baffles, the lychees 5 with branches can be laid in a single layer on the lifting belt 102, preventing the lychees 5 with branches from piling up and failing to be evenly spread on the roller-type debranching mechanism 2. Specifically, the lychees 5 with branches are poured into the feed trough 101, and the lifting belt 102, equipped with baffles, is evenly lifted onto the roller-type debranching mechanism 2 by the inclination angle of the lifting belt 102.

[0036] See Figures 1-4 The pushing mechanism 3 is located above the roller-type debranching mechanism 2. The pushing mechanism 3 includes a pushing belt 304 mounted on the frame 205 and a pushing drive motor 302 for driving the pushing belt 304. The pushing belt 304 is equipped with multiple pushing baffles 303 for pushing the lychees. With this structure, when the lychees fall into the roller-type debranching mechanism 2, the branches are drawn between the roller 201 and the arc-shaped cutter 202. Two adjacent rollers 201 rotate in opposite directions, and the blade 2021 of the arc-shaped cutter 202 catches and cuts the branches, severing them. At this time, the pushing drive motor 302 drives the pushing belt 304, which in turn moves the pushing baffles 303. Some lychees that have entered between the roller 201 and the arc-shaped cutter 202 but have not been cut by the arc-shaped cutter 202 are then pushed out. Under the push of the pusher baffle 303, the lychee moves along the axis of the roller 201. During the process of pushing the lychee, a certain shearing force is formed between the lychee fruit and the branch. Under the action of shearing force, the lychee fruit and the branch break off from the weak point of the fruit stem. Under the suction of the rotating roller 201, the branch falls from the gap and lands on the branch conveying mechanism 4. The lychee fruit (the lychee with the branch removed) moves to the end of the roller 201 under the pusher baffle 303 and its own gravity.

[0037] See Figures 1-4Multiple rollers 201 arranged along a wavy line form a notch above them, and the shape of the pusher baffle 303 is adapted to the notch. The purpose is that the pusher baffle 303 conforms to the notch of the rollers 201 to ensure that there are no dead corners when pushing the material; and the pusher baffle 303 is made of soft rubber (soft material) to prevent the baffle from scratching the lychee when the branch is sucked in.

[0038] See Figures 1-4 The feeding mechanism 3 includes two feeding drive shafts 301 mounted on the frame 205, and a feeding belt 304 positioned between the two feeding drive shafts 301. A feeding drive motor 302 is connected to one of the feeding drive shafts 301. Each feeding drive shaft 301 has a groove, and the feeding belt 304 has a guide protrusion 305 that engages with the groove. The purpose of this is to engage the guide protrusion 305 with the groove, preventing the feeding belt 304 from moving left or right, thus limiting its movement.

[0039] See Figures 1-4 The branch conveying mechanism 4 is located below the roller 201. The mechanism includes a belt conveyor assembly and a branch conveying drive motor 403. The belt conveyor assembly includes two branch conveying drive shafts 402 and a branch conveying belt 401 positioned between them. The branch conveying drive motor 403 is connected to one of the branch conveying drive shafts 402. With this mechanism, the removed branches fall from between the rollers 201 onto the branch conveying belt 401. The branch conveying drive motor 403 drives the branch conveying drive shafts 402 to rotate, causing the branch conveying belt 401 to move and collect the branches. The branch conveying belt 401 also has multiple baffles to better convey the branches.

[0040] See Figures 1-3 The belt conveyor assembly consists of two sets, while the branch conveyor drive motor 403 is a single motor that powers both sets of belt conveyor assemblies. The conveying direction of the branch conveyor belt 401 is perpendicular to the axis of the roller 201, which makes the structure more compact. The two sets of belt conveyor assemblies can better convey branches and cover a wider range. Branch guide plates 404 are provided between the two sets of belt conveyor assemblies and between each set of conveyor belts and the frame 205 to guide branches onto the branch conveyor belt 401. A litchi fruit guide plate 6 is provided between the branch guide plate 404 near the end of the roller 201 and the frame 205 to guide the litchi fruit to fall (to the collection frame).

[0041] See Figures 1-4The diameter of the first and middle parts of the roller 201 is larger than the diameter of the lychee fruit, but not too large, to prevent excessive clamping force from sucking the lychee into the gap of the roller 201 and damaging it. The gap between the tail ends of two adjacent rollers 201 is much larger than the diameter of the lychee fruit. The gap between the tail ends of two adjacent rollers 201 forms the discharge port. The lychees (lychee fruits) after removing the branches fall from the gap between the tail ends of two adjacent rollers 201, are guided by the lychee fruit guide plate 6, and fall out of the device. They can be collected by the collection frame.

[0042] See Figures 1-4 The working principle of the above-mentioned fresh lychee detwig removal device is as follows:

[0043] During operation, lychees 5 with branches are poured into the feed trough 101. The lifting belt 102, equipped with baffles, is used to evenly lift the lychees 5 into the roller-type de-branching mechanism 2 under the action of the lifting belt 102's inclination angle. When the lychees 5 with branches fall into the first end of the roller 201, the de-branching drive mechanism drives the two adjacent rollers 201 to rotate back and forth in opposite directions. The lychees 5 with branches continuously adjust their position until the lychees are sucked into the space between the roller 201 and the arc-shaped cutter 202, while the arc-shaped cutter 202 is lifted to form a suitable gap. When the two adjacent rollers 201 move towards each other, the lychee branches 501 are sucked into the gap. When the two adjacent rollers 201 move in opposite directions, the blade 2021 of the arc-shaped cutter 202 catches the lychee branches and cuts them. At this point, the pusher drive motor 302 drives the pusher belt 304 to move, which in turn drives the pusher baffle 303 to move. The pusher baffle 303 pushes the lychees (including lychees with branches removed and lychees with branches) to move. Some of the lychees 5 that enter between the roller shaft 201 and the arc cutter 202 and whose branches have not been cut by the arc cutter 202 (i.e., lychees with branches 5) are pushed by the pusher baffle 303. During the process of pushing the lychees 5, the lychee fruit and the branches 501 are subjected to a certain shearing force. Under the action of shearing force, the lychee branches break off from the weak point of the fruit stem. The broken branches and the cut branches fall from the gap under the suction of the rotating roller shaft 201 and fall to the branch conveyor belt 401. The branch conveyor belt 401 transports and collects the branches 501. The lychees (lychee fruits) with the branches removed move to the tail end of the roller 201 under the action of the pusher baffle 303 and their own gravity, and fall out of the device at the discharge port at the tail end for collection.

[0044] The above are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above content. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A device for removing branches from fresh lychees, characterized in that, The system includes a lifting and equalizing mechanism, a roller-type debranching mechanism, a pushing mechanism, and a branch conveying mechanism. The lifting and equalizing mechanism evenly lifts and conveys lychees with branches to the roller-type debranching mechanism. The roller-type debranching mechanism includes a frame, multiple rollers mounted on the frame, an elastic cutting blade assembly positioned between adjacent rollers for cutting the lychee branches, and a debranching drive mechanism for driving the rollers. The pushing mechanism pushes the lychees on the roller-type debranching mechanism to separate the lychee fruit from the branches. The branch conveying mechanism transports the separated branches. Multiple rollers are arranged along a wavy line. The elastic cutter assembly includes an arc-shaped cutter and a tension spring. One end of the tension spring is connected to the frame, and the other end is connected to the arc-shaped cutter. The tension spring's force causes the arc-shaped cutter to press against two adjacent rollers. The branch removal drive mechanism includes a servo motor and a gear set. Two adjacent rollers reciprocate in opposite directions under the drive of the servo motor via the gear set. When the servo motor drives the gear set to move, causing the two adjacent rollers to rotate in opposite directions, the branches are drawn into the gap between the rollers and the arc-shaped cutter under the action of clamping force and friction. When the two adjacent rollers rotate in opposite directions, the arc-shaped cutter catches the branches and cuts them.

2. The device for removing branches from fresh lychees according to claim 1, characterized in that, The elastic cutter assembly also includes a guide rod disposed between the tension spring and the arc-shaped cutter; the head of the guide rod is connected to the arc-shaped cutter, and the tail of the guide rod is connected to the tension spring; the head of the guide rod is the same size as the opening of the arc-shaped cutter, and the head of the guide rod is fixed at the opening of the arc-shaped cutter.

3. The device for removing branches from fresh lychees according to claim 2, characterized in that, The roller is set at an angle downwards.

4. The device for removing branches from fresh lychees according to claim 1, characterized in that, The lifting and equalizing mechanism includes a lifting frame, a feeding trough located at the lower end of the lifting frame, a lifting belt located on the lifting frame for conveying lychees in the feeding trough to the roller-type debranching mechanism, and a lifting drive motor for driving the lifting belt.

5. A device for removing branches from fresh lychees according to claim 1 or 2, characterized in that, During the reciprocating motion of two adjacent rollers, branches are sucked into the space between the rollers and the arc-shaped cutter, and the sucked-in branches will push up the arc-shaped cutter.

6. The device for removing branches from fresh lychees according to claim 1, characterized in that, The pushing mechanism is located above the roller-type debranching mechanism. The pushing mechanism includes a pushing belt mounted on the frame and a pushing drive motor for driving the pushing belt. The pushing belt is equipped with multiple pushing baffles for pushing the lychees.

7. The device for removing branches from fresh lychees according to claim 6, characterized in that, Multiple rollers are arranged in a wavy line, and a notch is formed above the multiple rollers. The shape of the pusher baffle is adapted to the notch.

8. The device for removing branches from fresh lychees according to claim 6, characterized in that, The feeding mechanism includes two feeding drive shafts mounted on the frame, a feeding belt positioned between the two feeding drive shafts, and a feeding drive motor connected to one of the feeding drive shafts. The feeding drive shaft has a groove, and the feeding belt has a guide protrusion that cooperates with the groove.

9. A device for removing branches from fresh lychees according to claim 1, characterized in that, The branch conveying mechanism is located below the roller shaft. The branch conveying mechanism includes a belt conveying assembly and a branch conveying drive motor. The belt conveying assembly includes two branch conveying drive shafts and a branch conveying belt disposed between the two branch conveying drive shafts. The branch conveying drive motor is connected to one of the branch conveying drive shafts.

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