Fruit and vegetable belt temporary storage conveying device

Abstract

The utility model discloses a fruit and vegetable belt buffer conveying device which comprises a front feeding module, an opening and closing fruit separating module, a buffer conveying module, a belt buffer sub-module and a buffer fruit placing module. The front feeding module comprises a front feeding conveying belt for conveying fruits; the opening and closing fruit separating module comprises a shifting plate capable of shifting, and the shifting plate has a first state of distributing fruits on the front feeding conveying belt to the buffering conveying module and a second state of distributing the fruits on the front feeding conveying belt to the buffering sub-module through shifting of the shifting plate; the buffer conveying module comprises a buffer conveying channel, and the buffer conveying channel conveys the fruits to the position below the buffer conveying module; the belt caching sub-module comprises a caching conveying belt connected with the front feeding conveying belt; the buffering fruit placing module is located at the tail end of the belt buffering sub-module and comprises an overturning plate arranged in a damping rotating mode, and when the fruits move to the overturning plate from the buffering conveying belt, the gravity of the fruits drives the overturning plate to overturn, so that the fruits fall to the position below the buffering fruit placing module. The fruit sorting device has the advantages that fruits are cached through the caching conveying belt, and subsequent fruit sorting is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fruit picking machines, in particular to a fruit and vegetable conveying device with buffering belt. Background Art

[0002] Fruit picking machines usually need to perform on-site sorting, and the sorting efficiency greatly affects the fruit picking efficiency. Therefore, a cache module needs to be designed in the fruit picking machine to cache a certain amount of fruit, so that when the fruit picking machine is not picking, such as when it moves to an open area, the fruit in the cache module can be sorted, thereby eliminating the restriction of sorting efficiency on fruit picking efficiency.

[0003] In the Chinese patent literature, the authorization announcement number is CN206879485U. The application was authorized and announced on January 16, 2018. The green date picking and grading machine disclosed therein includes a frame, a storage box is arranged on the frame, and a partition is arranged in the storage box to divide the storage box into a plurality of relatively independent boxes. An automatic grading system is arranged above the storage box, and a dispenser is arranged at one end of the automatic grading system. The dispenser is also connected to a manual sorting platform, and the manual sorting platform is provided with a conveyor belt and a buffer barrel is arranged above the conveyor belt. The buffer barrel is connected to a picking robot.

[0004] The disadvantage of the prior art is that the fruits are cached by a cache barrel and the fruits are stacked together, which is not conducive to subsequent sorting, cleaning and storage. Utility Model Content

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a fruit and vegetable belt buffer conveyor device, which buffers fruits through the buffer conveyor belt to facilitate subsequent fruit sorting.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A fruit and vegetable belt buffer conveying device comprises a front feeding module, an opening and closing fruit sorting module, a buffer conveying module, a belt buffer submodule and a buffer fruit placing module; the front feeding module comprises a front feeding conveying belt for conveying fruits; the opening and closing fruit sorting module comprises a shifting plate, the shifting of the shifting plate enables the first state of distributing fruits on the front feeding conveying belt to the buffer conveying module and the second state of distributing fruits on the front feeding conveying belt to the belt buffer submodule; the buffer conveying module comprises a buffer conveying channel, the buffer conveying channel conveys fruits to the bottom of the buffer conveying module; the belt buffer submodule comprises a buffer conveying belt connected to the front feeding conveying belt; the buffer fruit placing module is located at the end of the belt buffer submodule, the buffer fruit placing module comprises a flip plate with damping rotation, when the fruit moves from the buffer conveying belt to the flip plate, the gravity of the fruit drives the flip plate to flip so that the fruit falls to the bottom of the buffer fruit placing module.

[0008] The cache of the present application is implemented using a cache sub-module, which maintains orderly transportation of fruits while caching. Fruits that are not cached can be switched to other positions through the buffer transportation module, and fruits that need to be cached can be cached in the cache sub-module. After the cache sub-module is full, it can be further switched to other positions through the buffer fruit release module. The sorting status of the fruits can be maintained, which is convenient for re-entering the sorting and cleaning links later, ensuring the efficiency of sorting, cleaning and storage.

[0009] Preferably, the buffer conveyor belt includes a plurality of sub-conveyor belts, the conveying directions of adjacent sub-conveyor belts are opposite, and a reversing plate for guiding the fruit so that the fruit jumps between adjacent sub-conveyor belts is provided between adjacent sub-conveyor belts, and the reversing plate is arranged above the adjacent sub-conveyor belts. The fruit can be buffered on a plurality of sub-conveyor belts and kept in a separate placement state, which is convenient for subsequent sorting and cleaning.

[0010] Preferably, the fruit and vegetable belt buffer conveyor device further comprises a belt transmission module, the belt transmission module comprises a plurality of transmission pulleys and a double-sided transmission belt connecting the transmission pulleys, the transmission pulleys are equipped with a driving motor for driving the rotation thereof, the transmission pulleys comprise a first transmission pulley and a second transmission pulley respectively matched with two surfaces of the double-sided transmission belt, and adjacent sub-conveyor belts respectively match with the first transmission pulley and the second transmission pulley to realize conveyance in opposite directions. The two conveying surfaces of the double-sided transmission belt have different conveying directions, so that the adjacent sub-conveyor belts can be driven by the double-sided transmission belt to convey in different directions, realizing reliable caching on the sub-conveyor belts, and since different sub-conveyor belts are controlled to rotate by the same double-sided transmission belt, they can maintain synchronization without adding additional control programs.

[0011] Preferably, the buffer conveying channel is spiral-shaped. When the fruit is in the buffer conveying channel, it is conveyed downward in a spiral manner, and the spiral channel provides deceleration to achieve buffering.

[0012] Preferably, the opening and closing fruit sorting module includes an opening and closing base and a plate bracket arranged on the opening and closing base, the plate rotates around the plate bracket, a linear drive mechanism is connected between the opening and closing base and the plate, the linear drive mechanism rotates and connects the opening and closing base and the plate respectively, the linear drive mechanism telescopes and drives the plate to rotate, when the plate rotates, one end of the plate switches between being located on the upper side of the front feeding conveyor belt and leaving the upper side of the front feeding conveyor belt to achieve fruit sorting. The plate rotates to achieve position switching, thereby achieving fruit sorting, such as entering the buffer module and entering the buffer conveying channel.

[0013] Preferably, the fruit and vegetable belt buffer conveyor device also includes a frame, and the buffer fruit release module includes a first support frame and a second support frame fixedly connected to the frame and arranged opposite to each other, and a flip plate is rotatably connected between the first support frame and the second support frame, and the first support frame and the second support frame are respectively provided with an embedded torsion spring mechanism inside, and the embedded torsion spring mechanism includes a pre-tightening adjustment block fixed relative to the frame, and the pre-tightening adjustment block is rotatably arranged relative to the flip plate, and the two ends of the torsion spring are respectively fixedly connected to the pre-tightening adjustment block and the flip plate. When the fruit enters the buffer fruit release module, the fruit is located at the end of the flip plate, and the torque on the flip plate is large, forcing the flip plate to overcome the elastic force of the torsion spring and flip downward, thereby achieving buffered downward placement of the fruit.

[0014] Preferably, there are three groups of sub-conveyor belts, which are arranged in parallel. The three groups of sub-conveyor belts include a first sub-conveyor belt connected to the front feeding conveyor belt, a second sub-conveyor belt parallel to and adjacent to the first sub-conveyor belt, and a third sub-conveyor belt parallel to and adjacent to the second sub-conveyor belt. The first sub-conveyor belt, the third sub-conveyor belt and the front feeding conveyor belt are driven by the first transmission pulley, and the second sub-conveyor belt is driven by the second transmission pulley. The cache conveyor belt and the front feeding conveyor belt use the same belt drive module for power transmission, with good synchronization, and only need to be equipped with one rotary drive mechanism, which reduces the use cost of the rotary drive mechanism and simplifies motion control.

[0015] Preferably, the reversing plate is an arc plate, so as to achieve smooth guidance of the fruit.

[0016] Preferably, a guardrail is provided between adjacent buffer conveyor belts, and the guardrail is spaced apart from the reversing plate to form a passage for the fruit to pass through. The guardrail forms a unidirectional buffering area on the upper side of each buffer conveyor belt to prevent the fruit from randomly moving between adjacent buffer conveyor belts and affecting the fruit buffering.

[0017] Preferably, a lower conveyor belt is provided at the lower side of the buffer submodule, and when the flip plate flips downward, the fruits on the flip plate move to the upper side of the lower conveyor belt. The fruit conveying under the buffering fruit placing module is realized, and the lower conveyor belt is located at the lower side of the buffer submodule, utilizing the height space of the whole device to improve the integration of the device.

[0018] These features and advantages of the present invention will be disclosed in detail in the following specific implementation manners and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a structural schematic diagram of a fruit and vegetable belt buffer conveyor device proposed in one embodiment of the utility model;

[0021] Figure 2It is a structural schematic diagram of a front feeding module in a fruit and vegetable belt buffer conveying device proposed in one embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of an opening and closing fruit sorting module in a fruit and vegetable belt buffer conveying device proposed in one embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of a buffer submodule in a fruit and vegetable buffer conveyor device proposed in one embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of a fruit conveying route on a buffer submodule in a fruit and vegetable buffer conveying device proposed in one embodiment of the utility model;

[0025] Figure 6 It is a structural schematic diagram of a buffering fruit placing module in a fruit and vegetable belt buffering conveying device proposed in one embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the internal structure of a buffering fruit placing module in a fruit and vegetable belt buffering conveying device proposed in one embodiment of the utility model;

[0027] Figure 8 It is a structural schematic diagram of a belt transmission module in a fruit and vegetable belt buffer conveyor device proposed in one embodiment of the utility model;

[0028] Fig. 9 It is a schematic internal cross-sectional view of a fruit and vegetable belt buffer conveying device proposed in one embodiment of the utility model.

[0029] In the figure: frame 1, front feeding module 2, opening and closing fruit sorting module 3, buffer conveying module 4, belt buffer submodule 5, buffer fruit placing module 6, belt transmission module 7, sensor 8, reinforcing rib 9, fruit 10, lower conveyor belt 11;

[0030] Front feeding conveyor belt 201;

[0031] A dial plate 301, an opening and closing base 302, a dial plate bracket 303, and a linear drive mechanism 304;

[0032] Buffer conveying channel 401

[0033] Buffer conveyor belt 500, reversing plate 501, guardrail 502, aisle 503, first sub-conveyor belt 504, second sub-conveyor belt 505, third sub-conveyor belt 506;

[0034] Flip plate 601, first support frame 602, second support frame 603, preload adjustment block 604, torsion spring 605, blind hole 606, positioning shaft 607;

[0035] Double-sided transmission belt 701 , driving motor 702 , first transmission pulley 703 , second transmission pulley 704 , tensioning pulley 705 . DETAILED DESCRIPTION

[0036] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0037] In the description of this embodiment, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore, cannot be understood as a limitation on the utility model. In addition, if the terms "first", "second", and "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] like Figures 1 to 9 As shown, a fruit and vegetable belt buffer conveyor device proposed in one embodiment of the utility model comprises a front feeding module 2, an opening and closing fruit sorting module 3, a buffer conveying module 4, a belt buffer submodule 5 and a buffer fruit placing module 6; the front feeding module 2 comprises a front feeding conveyor belt 201 for conveying fruits 10; the opening and closing fruit sorting module 3 comprises a shifting plate 301, and the shifting of the shifting plate 301 enables it to have a first state of distributing the fruits 10 on the front feeding conveyor belt 201 to the buffer conveying module 4 and a second state of distributing the fruits 10 on the front feeding conveyor belt 201 to the belt buffer submodule 6. 5 is in the second state; the buffer conveying module 4 includes a buffer conveying channel 401, which conveys the fruit 10 to the bottom of the buffer conveying module 4; the buffer submodule 5 includes a buffer conveyor belt 500 connected to the front feeding conveyor belt 201; the buffer fruit release module 6 is located at the end of the buffer submodule 5, and the buffer fruit release module 6 includes a flip plate 601 with a damping rotation setting. When the fruit 10 moves from the buffer conveyor belt 500 to the flip plate 601, the gravity of the fruit 10 drives the flip plate 601 to flip so that the fruit 10 falls below the buffer fruit release module 6.

[0039] When the fruit 10 is put into the front feeding module 2, the front feeding conveyor belt 201 drives the fruit 10 to move toward the buffer submodule 5. When no buffer is needed, the paddle plate 301 extends into the upper side of the front feeding conveyor belt 201. The paddle plate 301 is in the first state. The fruit 10 is paddled to the buffer conveying module 4 by the paddle plate 301. Under the guidance of the buffer conveying channel 401, the fruit 10 moves downward to the bottom of the buffer conveying module 4. Subsequent processing equipment such as a conveyor belt and a sorting mechanism can be arranged below the buffer conveying module 4. If the amount of fruit 10 is too much, the paddle plate 301 is paddled to the second state. The paddle plate 301 is moved to the second state. 01 leaves the upper side of the front feeding conveyor belt 201, and the fruit 10 moves toward the buffer submodule 5 with the front feeding conveyor belt 201. After entering the buffer submodule 5, the fruit 10 is distributed on the buffer conveyor belt 500 to achieve fruit 10 caching. When the amount of fruit 10 is too much and causes the buffer submodule to overflow, the fruit 10 moves to the buffer fruit release module 6, and the gravity of the fruit 10 drives the flip plate 601 to flip, so that the fruit 10 falls to the bottom of the buffer fruit release module 6. Other conveyor belts or processing devices that cooperate with the flip plate 601 are arranged below the buffer fruit release module 6 to achieve subsequent fruit 10 processing.

[0040] The cache of the present application is implemented by using a cache submodule 5, which maintains orderly transportation of the fruits 10 while caching. The fruits 10 that do not need to be cached can be switched to other positions through the buffer transportation module 4, and the fruits 10 that need to be cached can be cached in the cache submodule 5. After the cache submodule 5 is full, it can be further switched to other positions through the buffer fruit release module 6. The individual states of the fruits 10 can be maintained, which is convenient for re-entering the sorting and cleaning links later, and ensuring the efficiency of sorting and cleaning.

[0041] As one example of the above solution, the buffer conveying channel 401 is spiral-shaped. Through the spiral bottom surface structure, a part of the gravity of the fruit 10 is offset, and the falling path of the fruit 10 is extended, thereby playing a buffering role.

[0042] As a simple replacement for the above solution, the buffer conveying channel 401 is an inclined surface, and the inclined surface structure is used to extend the falling path of the fruit 10, increase the friction force, and slow down the falling speed of the fruit 10.

[0043] As one of the embodiments of the present invention, a fruit and vegetable belt buffer conveyor device is proposed. The buffer conveyor belt 500 includes several groups of sub-conveyor belts. The conveying directions of adjacent sub-conveyor belts are opposite. The fruit and vegetable belt buffer conveyor device also includes a belt transmission module 7. The belt transmission module 7 includes several transmission pulleys and a double-sided transmission belt 701 connected to the transmission pulleys. Both sides of the double-sided transmission belt 701 can be transmitted. The transmission pulley is equipped with a driving motor 702 that drives it to rotate. The transmission pulley includes a first transmission pulley 703 and a second transmission pulley 704 that respectively cooperate with the two surfaces of the double-sided transmission belt 701. Adjacent sub-conveyor belts respectively cooperate with the first transmission pulley 703 and the second transmission pulley 704 to achieve conveying in opposite directions. A reversing plate 501 is provided between adjacent sub-conveyor belts for guiding the fruit 10 so that the fruit 10 jumps between adjacent sub-conveyor belts. The reversing plate 501 is arranged above the adjacent sub-conveyor belts. Each set of sub-conveyor belts includes an annular belt and rollers at both ends of the belt, and pulleys are provided at the ends of the rollers. The pulleys can coordinate the transition between the belt and the intermediate belt, pulleys, etc., and can be driven to rotate by the first drive pulley 703 or the second drive pulley 704 in the belt drive module 7. Figure 4 As shown, the reversing plate 501 is an arc plate. The two ends of the reversing plate 501 correspond to the opposite outer sides of two adjacent sub-conveyor belts, respectively, to ensure the guiding effect on the fruits 10.

[0044] As a simple replacement of the above solution, the reversing plate 501 is a bent plate.

[0045] Furthermore, a guardrail 502 is provided between adjacent buffer conveyor belts 500, and the guardrail 502 is spaced apart from the reversing plate 501 to form a passage 503 for the fruit 10 to pass through. The orderly conveyance of the fruit 10 is achieved, and the fruit 10 is prevented from rolling randomly on the adjacent buffer conveyor belts 500, thereby affecting the buffering efficiency and reliability. The front feeding conveyor belt 201 includes an annular belt and rollers at both ends of the belt, one of which is an active roller and the other is a driven roller. The active roller is driven by the double-sided transmission belt 701 to drive the front feeding conveyor belt 201.

[0046] like Figure 8As shown, the first transmission pulley 703 is located in the area surrounded by the double-sided transmission belt 701. There are five first transmission pulleys 703. The two first transmission pulleys 703 on the lower side are located at the bottom of the belt transmission module 7 and arranged side by side to tension the double-sided transmission belt 701. One of the three first transmission pulleys 703 on the upper side is directly connected to the drive motor 702, and another first transmission pulley 703 drives the front feed conveyor belt 201 and drives one of the sub-conveyor belts through the pulley assembly. The remaining first transmission pulley 703 drives another sub-conveyor belt through the wheel shaft and the pulley assembly, so that the two sub-conveyor belts at intervals can rotate synchronously in the same direction. A tensioning pulley 705 is arranged on the outer side of the double-sided transmission belt 701 for tensioning the outer side of the double-sided transmission belt 701. Two second transmission pulleys 704 are matched on the outer side of the double-sided transmission belt 701, and one of the second transmission pulleys 704 is used to drive a sub-conveyor belt through the wheel shaft and the pulley assembly.

[0047] For example, Figure 4 and Figure 5 As shown, there are three groups of sub-conveyor belts, which are arranged in parallel. The three groups of sub-conveyor belts include a first sub-conveyor belt 504 connected to the front feeding conveyor belt 201, a second sub-conveyor belt 505 parallel to and adjacent to the first sub-conveyor belt 504, and a third sub-conveyor belt 506 parallel to and adjacent to the second sub-conveyor belt 505. The first sub-conveyor belt 504, the third sub-conveyor belt 506 and the front feeding conveyor belt 201 are driven by the first transmission pulley 703, and the second sub-conveyor belt 505 is driven by the second transmission pulley 704. The drive here can be that the first transmission pulley 703 is coaxially connected with the pulley of the corresponding conveyor belt, or it can be achieved by the rotation drive through the cooperation of transmission components such as belts, gears, etc.

[0048] Through the belt drive module 7, in the present application, the front feeding conveyor belt 201, the first sub-conveyor belt 504, the second sub-conveyor belt 505 and the third sub-conveyor belt 506 are driven by the same driving motor 702, and the synchronization between the several conveyor belts is guaranteed, and the front feeding conveyor belt 201, the first sub-conveyor belt 504 and the third sub-conveyor belt 506 can keep rotating at the same speed and in the same direction, and the first sub-conveyor belt 504 and the second sub-conveyor belt 505 rotate in opposite directions at the same speed, thereby ensuring that the fruits 10 are evenly dispersed on the several conveyor belts. When buffered on the sub-conveyor belts, the spacing between them remains almost unchanged compared to the initial spacing on the front feeding conveyor belt 201, thereby maintaining the individualized state of the fruits 10, facilitating the subsequent re-entry into the sorting and cleaning links, and ensuring the efficiency of sorting and cleaning.

[0049] The fruit and vegetable belt buffer conveyor device disclosed in the present application also includes a frame 1, a belt drive module 7 is located at one side of the frame 1, a front feeding module 2 and a first sub-conveyor belt 504 are located at one end of the upper side of the frame 1 close to the belt drive module 7, a second sub-conveyor belt 505 and a third sub-conveyor belt 506 are arranged in parallel with the first sub-conveyor belt 504, a buffering fruit placing module 6 is located at the tail end of the third sub-conveyor belt 506, and a buffering conveying module 4 and an opening and closing fruit dividing module 3 are located in the area sandwiched by the belt buffer sub-module 5 and the front feeding module 2. A lower conveyor belt 11 is provided at the lower side of the belt buffer sub-module 5, and when the flip plate 601 flips downward, the fruit 10 on the flip plate 601 moves to the upper side of the lower conveyor belt 11. The lower conveyor belt 11 is driven by the second transmission pulley 704 located at the lower side of the belt drive module 7. The lower conveyor belt 11 corresponds to the lower side of the third sub-conveyor belt 506. The fruit and vegetable belt buffer conveyor fully utilizes the space environment of the frame 1, has a compact structure, occupies little space, is suitable for use inside the picking machine, and is convenient and efficient. The belt drive module 7 is used as a power source, and the motion control is simple and efficient, and the power source occupies little space.

[0050] Reinforcement ribs 9 are provided on the frame 1 to improve the strength of the frame 1. A sensor 8 for detection is provided at the connection position of the frame 1 corresponding to the front feeding conveyor belt 201 and the first sub-conveyor belt 504 to prevent the fruit 10 from failing to pass through the connection and accumulating at the connection or on the frame 1, thereby ensuring the conveying function of the material. After the fruit 10 enters the upper layer of the buffer submodule 5, the sensor 8 responds and records the number of buffered fruits 10. When the fruit 10 leaves the lower layer of the buffer submodule 5, the sensor 8 responds and records the number of buffered fruits 10 released. The difference between the counts of the two sensors 8 is the number of fruits 10 currently buffered.

[0051] Opening and closing fruit separation module 3 Figure 1 and Figure 3 As shown, the opening and closing fruit sorting module 3 includes an opening and closing base 302 and a plate holder 303 arranged on the opening and closing base 302, the opening and closing base 302 is fixed on the frame 1, the plate holder 303 includes a vertical rotation shaft, the plate 301 is rotatably connected to the rotation shaft, so that the plate 301 rotates around the plate holder 303, and a linear drive mechanism 304 is connected between the opening and closing base 302 and the plate 301, and the two ends of the linear drive mechanism 304 are respectively rotatably connected to the opening and closing base 302 and the plate 301, and the linear drive mechanism 304 is telescopic to drive the plate 301 to rotate. When the plate 301 rotates, one end of the plate 301 switches between being located on the upper side of the front feeding conveyor belt 201 and leaving the upper side of the front feeding conveyor belt 201 to achieve fruit sorting. The linear drive mechanism 304 adopts an electric push rod. As a simple replacement for the above scheme, the linear drive mechanism 304 adopts a cylinder or an oil cylinder.

[0052] The buffering fruit placing module 6 comprises a first support frame 602 and a second support frame 603 which are fixedly connected to the frame 1 and are arranged opposite to each other. The flip plate 601 is rotatably connected between the first support frame 602 and the second support frame 603 through a bearing. The first support frame 602 and the second support frame 603 are respectively provided with an embedded torsion spring 605 mechanism. The embedded torsion spring 605 mechanism comprises a pre-tightening adjustment block 604 which is relatively fixed to the frame 1. The pre-tightening adjustment block 604 is rotatably arranged relative to the flip plate 601 through a bearing. The two ends of the torsion spring 605 are respectively fixedly connected to the pre-tightening adjustment block 604 and the flip plate 601. One end of the flip plate 601 is provided with two coaxially arranged blind holes 606 which are opened outward. The torsion spring 605 is embedded in the blind hole 606. A positioning shaft 607 is provided at the bottom of the blind hole 606. One end of the torsion spring 605 is fixed on the positioning shaft 607. The other end of the torsion spring 605 is fixedly connected to the pre-tightening adjustment block 604. One end of the pre-tightening adjustment block 604 is embedded in the blind hole 606. The preload adjustment block 604 is threadedly connected to the frame 1, and can adjust the depth of the blind hole 606, thereby adjusting the preload pressure on the torsion spring 605. The torsion spring 605 is embedded in the blind hole 606, saving space, and the preload force is adjustable.

[0053] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A fruit and vegetable conveyor with buffer, characterized in that: It includes front feeding module, opening and closing fruit separation module, buffer conveying module, buffer submodule and buffer fruit placing module; The front feeding module comprises a front feeding conveyor belt for conveying fruits into; The opening and closing fruit distribution module includes a movable plate, and the plate is moved so that the fruit on the front feeding conveyor belt is distributed to the buffer conveyor module in a first state and the fruit on the front feeding conveyor belt is distributed to the buffer submodule in a second state; The buffer conveying module comprises a buffer conveying channel, and the buffer conveying channel conveys the fruit to the bottom of the buffer conveying module; The belt buffer submodule includes a buffer conveyor belt connected to the front feeding conveyor belt; The buffering fruit placing module is located at the end of the buffer submodule, and the buffering fruit placing module includes a flip plate with a damping rotation setting. When the fruit moves from the buffer conveyor belt to the flip plate, the gravity of the fruit drives the flip plate to flip so that the fruit falls below the buffering fruit placing module.

2. The fruit and vegetable belt buffer conveyor device according to claim 1 is characterized in that: The buffer conveyor belt comprises a plurality of sub-conveyor belts, the conveying directions of adjacent sub-conveyor belts are opposite, and a reversing plate for guiding fruits so that the fruits can jump between adjacent sub-conveyor belts is arranged between adjacent sub-conveyor belts, and the reversing plate is arranged across the top of adjacent sub-conveyor belts.

3. The fruit and vegetable belt buffer conveyor device according to claim 2, characterized in that: It also includes a belt drive module, which includes a plurality of drive pulleys and a double-sided drive belt connecting the drive pulleys, the drive pulleys are equipped with a drive motor for driving them to rotate, the drive pulleys include a first drive pulley and a second drive pulley respectively matched with the two surfaces of the double-sided drive belt, and adjacent sub-conveyor belts respectively cooperate with the first drive pulley and the second drive pulley to achieve conveying in opposite directions.

4. The fruit and vegetable belt buffer conveyor device according to claim 1, characterized in that: The buffer conveying channel is spiral-shaped.

5. The fruit and vegetable belt buffer conveyor device according to claim 1, characterized in that: The opening and closing fruit sorting module includes an opening and closing base and a paddle plate bracket arranged on the opening and closing base, the paddle plate rotates around the paddle plate bracket, a linear drive mechanism is connected between the opening and closing base and the paddle plate, the linear drive mechanism rotates to connect the opening and closing base and the paddle plate respectively, the linear drive mechanism telescopes and drives the paddle plate to rotate, when the paddle plate rotates, one end of the paddle plate switches between being located on the upper side of the front feeding conveyor belt and leaving the upper side of the front feeding conveyor belt to realize fruit sorting.

6. The fruit and vegetable belt buffer conveyor device according to claim 1, characterized in that: The fruit and vegetable belt buffer conveyor device also includes a frame, and the buffer fruit release module includes a first support frame and a second support frame which are fixedly connected to the frame and are relatively arranged, and a flip plate is rotatably connected between the first support frame and the second support frame, and the first support frame and the second support frame are respectively provided with an embedded torsion spring mechanism inside, and the embedded torsion spring mechanism includes a pre-tightening adjustment block which is relatively fixed to the frame, and the pre-tightening adjustment block is rotatably arranged relative to the flip plate, and two ends of the torsion spring are respectively fixedly connected to the pre-tightening adjustment block and the flip plate.

7. The fruit and vegetable belt buffer conveyor device according to claim 3 is characterized in that: The sub-conveyor belts are provided with three groups, and the three groups of sub-conveyor belts are arranged in parallel. The three groups of sub-conveyor belts include a first sub-conveyor belt connected to the front feeding conveyor belt, a second sub-conveyor belt parallel to and adjacent to the first sub-conveyor belt, and a third sub-conveyor belt parallel to and adjacent to the second sub-conveyor belt. The first sub-conveyor belt, the third sub-conveyor belt and the front feeding conveyor belt are driven by the first transmission belt pulley, and the second sub-conveyor belt is driven by the second transmission belt pulley.

8. The fruit and vegetable belt buffer conveyor device according to claim 2, characterized in that: The reversing plate is an arc plate.

9. The fruit and vegetable belt buffer conveyor device according to claim 2, characterized in that: A guardrail is arranged between adjacent sub-conveyor belts, and the guardrail and the reversing plate are arranged at intervals to form a passage for fruits to pass through.

10. A fruit and vegetable belt buffer conveyor device according to any one of claims 1 to 9, characterized in that: A lower conveyor belt is arranged on the lower side of the buffer submodule, and when the turning plate turns downward, the fruits on the turning plate move to the upper side of the lower conveyor belt.

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