Fruit and vegetable packaging weighing and sorting device and method

Abstract

The present invention relates to a fruit and vegetable packaging, weighing and sorting device and method thereof. By means of a Y-direction moving driving member driving a connecting seat roller to move horizontally, and using the second sealing heating block and the second cutting knife on the surface of the roller to respectively rollingly cooperate with the linear first sealing heating block and the first cutting knife, the packaging film being conveyed is efficiently sealed at both ends and cut in the middle. Even if the surface of the sealing heating block is slightly deformed after long-term use of the mechanism, the fitting at the deformed part can be ensured. By using the weight range of single packages of different varieties of fruits and vegetables as the judgment standard for fruit and vegetable varieties, by controlling the guide plate to tilt towards the corresponding side, the fruits and vegetables conveyed to the end of the third conveyor belt can slide down from the guide plate through the balls under the action of weight and fall into the collection box on the corresponding side, achieving the purpose of automatic classification and collection of fruits and vegetables. The above-mentioned guide mechanism has the advantages of simple structure, small floor area and low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of fruit and vegetable packaging classification, and particularly to a fruit and vegetable packaging weighing and classification device and method. Background Art

[0002] In the working principle of existing fruit and vegetable packaging machines, a conveyor belt is usually set, and fruits and vegetables to be packaged are placed equidistantly on the conveyor belt. As the conveyor belt moves forward, after being wrapped by a packaging film, it is necessary to use a heating die head to heat-seal and cut the packaging film opening of the packaging film relative to the conveying direction of the conveyor belt.

[0003] Chinese Patent with the authorization announcement number CN105383727B discloses a full-automatic fruit and vegetable packaging machine. Referring to the sealing mechanism in the patent solution, both the upper hot head and the lower hot head are linear, and the upper hot head and the lower hot head are distributed in the horizontal direction perpendicular to the conveying direction of the conveyor belt. By controlling the upper hot head and the lower hot head to move towards each other and fit together, the packaging film opening between the upper hot head and the lower hot head is heat-sealed. In this solution, the structure of the cutting knife is the same. Although this structure is relatively efficient, it has extremely high requirements for the flatness of the contact surface between the upper hot head and the lower hot head. As the use time increases, the contact surface between the upper hot head and the lower hot head will have tiny gaps due to slight deformation, so that when the packaging film passes through, the packaging film opening cannot be completely sealed, and a small section of opening will be left at the position of the bag mouth of some packaging bags relative to the upper hot head and the lower hot head, resulting in the bag mouth not being completely sealed and requiring unpacking and repackaging.

[0004] On the other hand, since existing full-automatic fruit and vegetable packaging machines cannot achieve automatic classification after packaging, usually, fruits and vegetables of a single variety are concentratedly packaged and collected. However, when packaging fruit and vegetable products with a small number of fruits and vegetables of a single variety and a complex variety, it is necessary to pre-classify the fruit and vegetable varieties in advance, and then manually switch the collection device frequently, resulting in a decrease in production efficiency. If the steps of pre-classifying fruits and vegetables before packaging and manually replacing the collection device can be omitted, the efficiency can be greatly improved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide a fruit and vegetable packaging weighing and classification device and method to improve the packaging and classification collection efficiency of fruit and vegetable products of multiple varieties.

[0006] To solve the above technical problem, the technical solution adopted by the present invention is:

[0007] A fruit and vegetable packaging weighing and classification device, comprising:

[0008] A frame;

[0009] The first conveyor belt, which is connected to the frame, and the conveying direction of the first conveyor belt is the X direction;

[0010] The second conveyor belt, which is connected to the frame, the starting end of the second conveyor belt is located at the end of the first conveyor belt, and the conveying direction of the second conveyor belt is the X direction;

[0011] The third conveyor belt, which is connected to the frame, the starting end of the third conveyor belt is located at the end of the second conveyor belt, the conveying direction of the third conveyor belt is the X direction, and a weighing mechanism is provided on the third conveyor belt, and the weighing mechanism is used to weigh the weight of the fruits and vegetables passing on the third conveyor belt;

[0012] The film folding mechanism, which is located on both sides of the starting end of the second conveyor belt, and the film folding mechanism is used to bend and guide the two sides of the packaging film in the Z direction respectively;

[0013] The middle sealing mechanism, which is located above the second conveyor belt, and the middle sealing mechanism is located in front of the film folding mechanism with respect to the conveying direction of the second conveyor belt, and the middle sealing mechanism is used to heat-seal and connect the two side edges of the packaging film;

[0014] The sealing heating and cutting mechanism, which is located between the second conveyor belt and the third conveyor belt, and the sealing heating and cutting mechanism includes a first sealing heating and cutting component and a second sealing heating and cutting component; the first sealing cutting component includes a first sealing heating and cutting piece body and a vertical movement driving piece, and the vertical movement driving piece is used to drive the first sealing heating and cutting piece body to move in the vertical direction;

[0015] The first sealing heating and cutting piece includes a first cutting knife arranged linearly in the Y direction, and first sealing heating blocks arranged linearly in the Y direction are respectively provided on both sides of the first cutting knife in the X direction;

[0016] The sealing heating and cutting mechanism includes a second sealing heating and cutting component and a Y-direction movement driving piece; the second sealing heating and cutting component includes a movable connecting seat and a roller, the roller is rotatably connected to the movable connecting seat, the movable connecting seat is connected to the Y-direction movement driving piece, the Y-direction movement driving piece is used to drive the movable connecting seat to move in the Y direction, and the second sealing heating and cutting component is located above the first sealing heating and cutting component;

[0017] The axial direction of the roller is the X direction, a circular second cutting knife is provided in the middle of the circumferential surface of the roller, and circular second sealing heating blocks are respectively provided on both sides of the second cutting knife in the X direction, and the second sealing heating blocks are respectively located in the same vertical plane as one of the first sealing heating blocks;

[0018] A material guiding mechanism is provided at the end of the third conveyor belt. The material guiding mechanism includes a material guiding plate, and a plurality of balls are articulated on the upper surface of the material guiding plate in an array. A spherical hinge is provided at the exact center of the lower part of the material guiding plate, and a support column is connected to the lower part of the spherical hinge. The lower end of the support column is fixedly connected to the frame. Four adjusting cylinders are connected to the lower part of the material guiding plate in an array distribution. Among them, 2 adjusting cylinders are symmetrically distributed on the Y-direction side and the reverse Y-direction side of the support column, and the other 2 adjusting cylinders are symmetrically distributed on the X-direction side and the reverse X-direction side of the support column. The upper end of the adjusting cylinder is pivotally connected to the lower part of the material guiding plate, and the lower end is pivotally connected to the frame.

[0019] Collection boxes are respectively provided on the X-direction side, the Y-direction side and the reverse Y-direction side of the material guiding mechanism.

[0020] A control module is electrically connected to the first conveyor belt, the second conveyor belt, the third conveyor belt, the weighing mechanism, the middle sealing mechanism, the vertical movement driving member, and the Y-direction movement driving member respectively.

[0021] Further, in the structure of the above-mentioned fruit and vegetable packaging weighing and sorting device, an arc-shaped material guiding slope is provided on one side of the collection box close to the material guiding mechanism.

[0022] Further, in the structure of the above-mentioned fruit and vegetable packaging weighing and sorting device, the collection box includes a fixed collection box and a movable collection box. The fixed collection box is arranged on the X-direction side of the material guiding mechanism, and the movable collection box is arranged on the Y-direction side and the reverse Y-direction side of the material guiding mechanism. A plurality of the movable collection boxes are distributed in an array along the X-direction, and the moving direction of the movable collection box is the X-direction.

[0023] Further, in the structure of the above-mentioned fruit and vegetable packaging weighing and sorting device, it further includes:

[0024] A first lead screw guide rail module, the lead screw axis of the first lead screw guide rail module is in the X-direction, and the driving motor of the first lead screw guide rail module is electrically connected to the control module;

[0025] A moving seat is connected to the first lead screw guide rail module, and the movable collection box is arranged on the upper part of the moving seat.

[0026] Further, in the structure of the above-mentioned fruit and vegetable packaging weighing and sorting device, the middle sealing mechanism includes two heating conveyor belts symmetrically distributed, and the belt surfaces on the opposite sides of the two heating conveyor belts are mutually attached.

[0027] Further, in the structure of the above-mentioned fruit and vegetable packaging weighing and sorting device, the vertical movement driving member includes a cylinder or a hydraulic cylinder.

[0028] Further, in the structure of the above-mentioned fruit and vegetable packaging weighing and sorting device, the Y-direction movement driving member is a second lead screw guide rail module.

[0029] Further, in the structure of the above-mentioned fruit and vegetable packaging, weighing and sorting device, the length of the second lead screw guide module is longer than the length of the first sealing heating block.

[0030] The present invention also relates to a packaging, weighing and sorting method for the above-mentioned fruit and vegetable packaging, weighing and sorting device, comprising the following steps:

[0031] Step 1: The fruits and vegetables to be packaged are placed on the first conveyor belt manually or by a manipulator at a certain interval, so that the fruits and vegetables pass through the second conveyor belt and the third conveyor belt in sequence;

[0032] Step 2: When the fruits and vegetables pass through the starting end of the second conveyor belt, under the action of the film folding device, the packaging film is guided from the starting end of the conveyor belt to the second conveyor belt. The film folding device bends and guides the two sides of the packaging film in the Y direction, gathers them, and guides them to the middle sealing mechanism;

[0033] Step 3: The two sides of the packaging film are hermetically sealed and connected to each other by the middle sealing mechanism, so that the fruits and vegetables are wrapped in the tubular packaging film;

[0034] Step 4: The fruits and vegetables continue to be conveyed in the X direction. When the packaging film between two adjacent fruits and vegetables moves to the sealing heating and cutting mechanism, control the Y-direction driving member to drive the connecting seat to move a short distance in the Y direction, so that the roller is located above one end of the first sealing heating and cutting assembly;

[0035] Control the vertical movement driving member to drive the first sealing heating and cutting assembly to move upward to a position higher than the upper surface of the second conveyor belt, so that one end of the first sealing heating and cutting assembly contacts the surface of the roller, one end of the first sealing heating block and the lower end of the second sealing heating block are attached, and one end of the first cutting knife and the lower end of the second cutting knife are misaligned and closely attached;

[0036] Control the Y-direction movement driving member to continue to drive the connecting seat to move in the Y direction, so that the roller rolls on the upper surface of the first sealing heating and cutting assembly to the other end, cutting the packaging film, and heat-sealing both sides of the cutting position of the packaging film;

[0037] Control the vertical movement driving member to drive the first sealing heating and cutting assembly to move downward to a position lower than the upper surface of the second conveyor belt, control the Y-direction movement driving member to drive the connecting seat to move a short distance in the Y direction, so that the roller moves above one side of the first sealing heating and cutting assembly in the Y direction;

[0038] Step 5: Control the second conveyor belt and the third conveyor belt to continue to drive the fruits and vegetables to be conveyed in the X direction. When the next packaging film between two adjacent fruits and vegetables moves to the sealing heating and cutting mechanism, repeat the above Step 4;

[0039] Step 6: The weighing mechanism of the third conveyor belt weighs the fruits and vegetables passing on the third conveyor belt, obtains the weight information of the fruits and vegetables, and sends the weight information to the control module. The control module compares the received weight information with the preset weight information, controls the corresponding adjusting cylinder to extend or contract, so that the material guiding plate tilts towards one of the collection bins. The third conveyor belt sends the weighed fruits and vegetables to the material guiding plate, and they slide into the corresponding collection bin through the balls on the material guiding plate for collection.

[0040] The beneficial effects of the present invention are as follows:

[0041] By adopting the method of driving the connecting seat roller to move horizontally by the Y-direction moving driving part, and using the second sealing heating block and the second cutting knife on the surface of the roller to rollingly cooperate with the linear first sealing heating block and the first cutting knife respectively to efficiently seal both ends and cut in the middle of the conveying packaging film. Compared with the traditional structure where both the upper and lower sealing heating and cutting components are linear, and the method of realizing sealing and cutting by the opposite fitting of the upper and lower sealing heating and cutting components, the sealing heating and cutting mechanism of the present application can ensure complete sealing and cutting of all aspects of the packaging film. Due to the adoption of the rolling cooperation method, even if the surface of the sealing heating block is slightly deformed after long-term use of the mechanism, it can still ensure the fitting at the deformed part.

[0042] After the fruits and vegetables are packaged, they are weighed by the weighing mechanism of the third conveyor belt. The weight ranges of different fruit and vegetable varieties can be preset in advance. By using the weight range of the single package of different varieties of fruits and vegetables as the judgment standard for the fruit and vegetable variety, by controlling the material guiding plate to tilt towards the corresponding side, the fruits and vegetables transported to the end of the third conveyor belt will slide from the material guiding plate through the balls and fall into the corresponding collection bin under the action of weight, achieving the purpose of automatic classification and collection of fruits and vegetables. The above-mentioned material guiding mechanism has the advantages of simple structure, small floor area, and low cost. Description of the Drawings

[0043] Figure 1 It is a schematic structural diagram of a fruit and vegetable packaging weighing and sorting device according to a specific embodiment of the present invention;

[0044] Figure 2 It is a schematic structural diagram of a fruit and vegetable packaging weighing and sorting device according to a specific embodiment of the present invention;

[0045] Figure 3 It is Figure 2 The enlarged view of part A;

[0046] Figure 4 It is a Y-direction view of a fruit and vegetable packaging weighing and sorting device according to a specific embodiment of the present invention;

[0047] Figure 5 It is Figure 4 The enlarged view of part B;

[0048] Figure 6 The X-direction view of a fruit and vegetable packaging, weighing and sorting device according to a specific embodiment of the present invention;

[0049] Label description:

[0050] 1. Frame;

[0051] 2. First conveyor belt;

[0052] 3. Second conveyor belt;

[0053] 4. Third conveyor belt;

[0054] 5. Film folding mechanism;

[0055] 6. Middle sealing mechanism;

[0056] 7. Sealing, heating and cutting mechanism; 71. First sealing, heating and cutting assembly; 711. First cutting knife; 712. First sealing and heating block; 72. Vertical movement driving member; 73. Second sealing, heating and cutting assembly; 731. Connecting seat; 732. Roller; 733. Second cutting knife; 734. Second sealing and heating block; 74. Y-direction movement driving member; 741. Second screw rod guide rail module;

[0057] 8. Material guiding mechanism; 81. Material guiding plate; 82. Ball; 83. Ball hinge; 84. Support column; 85. Adjusting cylinder;

[0058] 91. Movable collection box; 92. Fixed collection box; 93. Material guiding inclined plane;

[0059] 10. First screw rod guide rail module. Specific embodiment

[0060] To describe in detail the technical content, achieved objectives and effects of the present invention, the following is described in conjunction with the embodiments and with reference to the accompanying drawings.

[0061] Please refer to Figures 1 to 6 , the present invention relates to a fruit and vegetable packaging, weighing and sorting device, including:

[0062] Frame 1;

[0063] First conveyor belt 2, the first conveyor belt 2 is connected to the frame 1, and the conveying direction of the first conveyor belt 2 is the X direction;

[0064] Second conveyor belt 3, the second conveyor belt 3 is connected to the frame 1, the starting end of the second conveyor belt 3 is located at the end of the first conveyor belt 2, and the conveying direction of the second conveyor belt 3 is the X direction;

[0065] The third conveyor belt 4, the third conveyor belt 4 is connected to the frame 1, the starting end of the third conveyor belt 4 is located at the end of the second conveyor belt 3, the conveying direction of the third conveyor belt 4 is the X direction, the third conveyor belt 4 is provided with a weighing mechanism, and the weighing mechanism is used to weigh the weight of the fruits and vegetables passing on the third conveyor belt 4;

[0066] The film folding mechanism 5, the film folding mechanism 5 is located on both sides of the starting end of the second conveyor belt 3, and the film folding mechanism 5 is used to bend and guide the two sides of the packaging film in the Z direction respectively;

[0067] The middle sealing mechanism 6, the middle sealing mechanism 6 is located above the second conveyor belt 3, the middle sealing mechanism 6 is located in front of the film folding mechanism 5 relative to the conveying direction of the second conveyor belt 3, and the middle sealing mechanism 6 is used to heat-seal and connect the two side edges of the packaging film;

[0068] The sealing heating and cutting mechanism 7, the sealing heating and cutting mechanism 7 is located between the second conveyor belt 3 and the third conveyor belt 4, and the sealing heating and cutting mechanism 7 includes a first sealing heating and cutting component 71 and a second sealing heating and cutting component 73; the first sealing cutting component includes a first sealing heating and cutting piece body and a vertical movement driving piece 72, and the vertical movement driving piece 72 is used to drive the first sealing heating and cutting piece body to move in the vertical direction;

[0069] The first sealing heating and cutting piece includes a first cutting knife 711 arranged linearly in the Y direction, and first sealing heating blocks 712 arranged linearly in the Y direction are respectively arranged on both sides of the first cutting knife 711 in the X direction;

[0070] The sealing heating and cutting mechanism 7 includes a second sealing heating and cutting component 73 and a Y-direction movement driving piece 74; the second sealing heating and cutting component 73 includes a movable connecting seat 731 and a roller 732, the roller 732 is rotatably connected to the movable connecting seat 731, the movable connecting seat 731 is connected to the Y-direction movement driving piece 74, the Y-direction movement driving piece 74 is used to drive the movable connecting seat 731 to move in the Y direction, and the second sealing heating and cutting component 73 is located above the first sealing heating and cutting component 71;

[0071] The axial direction of the roller 732 is the X direction, a circular second cutting knife 733 is arranged in the middle of the circumferential surface of the roller 732, and circular second sealing heating blocks 734 are respectively arranged on both sides of the second cutting knife 733 in the X direction, and the second sealing heating blocks 734 and one of the first sealing heating blocks 712 are located in the same vertical plane;

[0072] The material guiding mechanism 8 is arranged at the end of the third conveyor belt 4; the material guiding mechanism 8 includes a material guiding plate 81, and a plurality of balls 82 are articulated on the upper surface of the material guiding plate 81 in an array; a spherical hinge 83 is provided at the exact center of the lower part of the material guiding plate 81, a support column 84 is connected to the lower part of the spherical hinge 83, and the lower end of the support column 84 is fixedly connected to the frame 1; four adjusting cylinders 85 are connected to the lower part of the material guiding plate 81 in an array distribution, wherein 2 adjusting cylinders 85 are symmetrically distributed on the Y-direction and the reverse side of the Y-direction of the support column 84, and the other 2 adjusting cylinders 85 are symmetrically distributed on the X-direction and the reverse side of the X-direction of the support column 84. The upper end of the adjusting cylinder 85 is pivotally connected to the lower part of the material guiding plate 81, and the lower end is pivotally connected to the frame 1;

[0073] Collection boxes are respectively arranged on the X-direction, the Y-direction and the reverse side of the Y-direction of the material guiding mechanism 8;

[0074] The control module is electrically connected to the first conveyor belt 2, the second conveyor belt 3, the third conveyor belt 4, the weighing mechanism, the middle sealing mechanism 6, the vertical movement driving member 72, and the Y-direction movement driving member 74 respectively.

[0075] In the above embodiments, the Y-direction movement driving member 74 is adopted to drive the roller 732 of the connecting seat 731 to move horizontally, and the second sealing heating block 734 and the second cutting knife 733 on the surface of the roller 732 are respectively in rolling cooperation with the linear first sealing heating block 712 and the first cutting knife 711 to efficiently seal the two ends and cut in the middle of the packaging film during transportation. Compared with the traditional structure in which the upper and lower sealing heating and cutting assemblies both adopt linear structures and the upper and lower sealing heating and cutting assemblies are in opposite contact to achieve sealing and cutting, the sealing heating and cutting mechanism 7 of the present application can ensure complete sealing and cutting of all directions of the packaging film. Due to the adoption of the rolling cooperation method, even if the surface of the sealing heating block is slightly deformed after long-term use of the mechanism, the fitting at the deformed part can still be ensured. After the fruits and vegetables are packaged, they are weighed by the weighing mechanism of the third conveyor belt 4. The weight ranges of different varieties of fruits and vegetables can be preset in advance, and the weight ranges of single packages of different varieties of fruits and vegetables are used as the judgment criteria for judging the varieties of fruits and vegetables. By controlling the material guiding plate 81 to tilt to the corresponding side, the fruits and vegetables transported to the end of the third conveyor belt 4 slide through the balls 82 on the material guiding plate 81 and fall into the collection boxes on the corresponding side under the action of gravity, achieving the purpose of automatic classification and collection of fruits and vegetables. The above-mentioned material guiding mechanism 8 has the advantages of simple structure, small floor area and low cost.

[0076] In the above embodiments, it should be noted that the above method of using the preset weight range as a criterion for judging fruit and vegetable varieties is only applicable when the weight ranges of various fruit and vegetable varieties in single packaging are significantly different, and the weight range is used as the standard alone. For example, when two white radishes are packaged at one time and two crown daisies are packaged at one time, the weight difference between the two is large, and the fruit and vegetable varieties can be directly judged by the weight difference. When the weights of the packaged fruit and vegetable varieties are close, such as when two crown daisies are packaged at one time and two sweet potato leaves are packaged at one time, since the weights of the two are close, additional assistance is required. The CCD camera or other imaging recognition methods are used for auxiliary judgment. That is, a CCD camera can be set above the third conveyor belt 4, and the image information of the passing fruits and vegetables is obtained through the CCD camera. By comparing the pixel points of the photographed fruit and vegetable image information with the pre-stored photo image information of the fruit and vegetable varieties, the types of fruits and vegetables can be judged, which is used as an auxiliary judgment for the packaged fruits and vegetables with similar weights. The working principle of the above visual imaging judgment method is the prior art. The present invention only applies this technology to the field of fruit and vegetable packaging and classification, and only activates it as an auxiliary judgment for a small number of fruit and vegetable varieties with difficult-to-distinguish weights. Most fruit and vegetable varieties with large weight differences do not require this visual auxiliary judgment, so the work efficiency of classification and collection can be greatly improved.

[0077] As an alternative embodiment, an arc-shaped guiding slope 93 is provided on one side of the collection box close to the guiding mechanism 8.

[0078] In the above embodiments, referring to Figure 2 , when the packaged fruits and vegetables fall into the collection box, they will first fall onto the arc-shaped guiding slope 93. The arc-shaped guiding slope 93 provides a certain buffer, enabling the fruits and vegetables to slowly roll into the bottom of the collection box along the arc-shaped guiding slope 93, and they can roll to the side away from the guiding slope 93 under the action of inertia, so as to achieve the purpose of stacking in sequence and neatly stacking automatically.

[0079] As an alternative embodiment, the collection box includes a fixed collection box 92 and a movable collection box 91. The fixed collection box 92 is arranged on the X-direction side of the guiding mechanism 8, and the movable collection box 91 is arranged on the Y-direction and the reverse Y-direction sides of the guiding mechanism 8. A plurality of the movable collection boxes 91 are distributed in an array along the X-direction, and the moving direction of the movable collection box 91 is the X-direction.

[0080] Preferably, it further includes:

[0081] The first lead screw guide rail module 10, the lead screw axis of the first lead screw guide rail module 10 is in the X-direction, and the drive motor of the first lead screw guide rail module 10 is electrically connected to the control module;

[0082] A moving seat, the moving seat is connected to the first lead screw guide rail module 10, and the movable collection box 91 is arranged on the upper part of the moving seat.

[0083] In the above embodiments, with reference to Figure 1 and Figure 2 , through the first screw rod guide module 10, multiple moving seats connected to its upper part can be driven to move along the X direction, thereby driving multiple movable collection bins 91 arranged in an array along the X direction to move along the X direction, so that various varieties of fruits and vegetables can be classified and collected simultaneously. With reference to Figure 2 , the figure shows a solution with 1 fixed collection bin 92 and 6 movable collection bins 91, and 7 different varieties of fruits and vegetables can be collected simultaneously. However, it is not limited to 6 movable collection bins 91. The length of the first screw rod guide module 10 and the number of moving seats can be increased as needed to meet the classification and collection requirements of a large number of varieties of fruits and vegetables.

[0084] As an alternative embodiment, the middle sealing mechanism 6 includes two heating conveyor belts symmetrically distributed, and the belt surfaces on the opposite sides of the two heating conveyor belts are mutually attached. During the conveying process, the two side edges of the packaging film gathered and guided are heat-sealed by the two heating conveyor belts and conveyed in the X direction, so that the packaging film forms a cylinder, and the vegetables are wrapped in the cylindrical packaging film.

[0085] As an alternative embodiment, the vertical movement driving member 72 includes a cylinder or a hydraulic cylinder.

[0086] In the above embodiments, in order to improve the stability of the vertical movement driving member 72, a vertical guide rail or a limiting shaft can be additionally provided, or the number of hydraulic cylinders or cylinders can be increased. The specific structure diagram is not shown in the figure. These methods are all conventional means, so the specific structural principle will not be elaborated too much.

[0087] As an alternative embodiment, the Y-direction movement driving member 74 is a second screw rod guide module 741, which makes the Y-direction movement of the connecting seat 731 and the roller 732 more stable.

[0088] As an alternative embodiment, the length of the second screw rod guide module 741 is longer than the length of the first sealing heating block 712.

[0089] In the above embodiments, when the roller 732 does not need to be used for sealing and cutting, it can stay on the Y-direction side of the third conveyor belt 4, and its surface interferes with the vegetables on the conveyor belt.

[0090] The specific embodiment of the present invention also relates to a packaging, weighing and classification method of the above-mentioned fruit and vegetable packaging and weighing classification device, including the following steps:

[0091] Step 1: The fruits and vegetables to be packaged are placed on the first conveyor belt 2 manually or by a manipulator at a certain interval, so that the fruits and vegetables pass through the second conveyor belt 3 and the third conveyor belt 4 in sequence;

[0092] Step 2: When the fruits and vegetables pass through the starting end of the second conveyor belt 3, under the action of the film folding device, the packaging film is guided from the starting end of the conveyor belt to the second conveyor belt 3. The film folding device bends and guides the two sides of the packaging film in the Y direction, gathers them, and guides them to the middle sealing mechanism 6;

[0093] Step 3: The two sides of the packaging film are heat-melted and sealed to each other through the middle sealing mechanism 6, so that the fruits and vegetables are wrapped in the tubular packaging film;

[0094] Step 4: The fruits and vegetables continue to be conveyed in the X direction. When the packaging film between two adjacent fruits and vegetables moves to the sealing and heating cutting mechanism 7, control the Y-direction driving part to drive the connecting seat 731 to move a short distance in the Y direction, so that the roller 732 is located above one end of the first sealing and heating cutting assembly 71;

[0095] Control the vertical movement driving part 72 to drive the first sealing and heating cutting assembly 71 to move upward to a position higher than the upper surface of the second conveyor belt 3, so that one end of the first sealing and heating cutting assembly 71 contacts the surface of the roller 732, one end of the first sealing heating block 712 fits with the lower end of the second sealing heating block 734, and one end of the first cutting knife 711 and the lower end of the second cutting knife 733 are misaligned and closely attached;

[0096] Control the Y-direction movement driving part 74 to continue driving the connecting seat 731 to move in the Y direction, so that the roller 732 rolls on the upper surface of the first sealing and heating cutting assembly 71 to the other end, cutting the packaging film, and heat-melting and sealing both sides of the cutting position of the packaging film;

[0097] Control the vertical movement driving part 72 to drive the first sealing and heating cutting assembly 71 to move downward to a position lower than the upper surface of the second conveyor belt 3, control the Y-direction movement driving part 74 to drive the connecting seat 731 to move a short distance in the Y direction, so that the roller 732 moves above one side of the first sealing and heating cutting assembly 71 in the Y direction;

[0098] Step 5: Control the second conveyor belt 3 and the third conveyor belt 4 to continue driving the fruits and vegetables to be conveyed in the X direction. When the next packaging film between two adjacent fruits and vegetables moves to the sealing and heating cutting mechanism 7, repeat the above Step 4;

[0099] Step 6: The weighing mechanism of the third conveyor belt 4 weighs the fruits and vegetables passing through the third conveyor belt 4, obtains the weight information of the fruits and vegetables, and sends the weight information to the control module. The control module compares the received weight information with the preset weight information, controls the corresponding adjusting cylinder 85 to extend or contract, so that the guide plate 81 tilts towards one of the collection boxes. The third conveyor belt 4 sends the weighed fruits and vegetables to the guide plate 81, and slides into the corresponding collection box through the balls 82 on the guide plate 81 for collection.

[0100] As a preferred embodiment, step 6 above is specifically as follows: The weight range of a single package of each fruit and vegetable variety is pre-stored. This range can set a threshold value through the weight of the lightest single-packaged fruit and vegetable of this variety and the weight of the heaviest single-packaged fruit and vegetable. If this threshold value does not overlap with the weight range threshold values of other fruits and vegetables, then only the weight of this fruit and vegetable is used as the judgment basis. If this threshold value overlaps with the weight range threshold values of other fruits and vegetables, then an image of this variety is taken as the second comparison judgment basis and stored in the information database. When the fruit and vegetable of this variety is conveyed by the third conveyor belt 4 after being packaged, it is weighed and compared with the weight range in the information database. An image of this fruit and vegetable is taken by the CCD camera above the third conveyor belt 4 and compared with the pre-stored image information in the information database, so as to comprehensively judge the variety of this fruit and vegetable, and thus control the movement of the material guiding mechanism 8 and the movable collection box 91, so that the fruit and vegetable of this variety accurately and automatically falls into the corresponding collection box for collection.

[0101] The above method can improve the accuracy of the classification and collection of fruit and vegetable varieties.

[0102] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are similarly included in the patent protection scope of the present invention.

Claims

1. Fruit and vegetable packaging weighing and sorting device, characterized in that, Comprising: Frame; The first conveyor belt, which is connected to the frame, and the conveying direction of the first conveyor belt is the X direction; The second conveyor belt, which is connected to the frame, the starting end of the second conveyor belt is located at the end of the first conveyor belt, and the conveying direction of the second conveyor belt is the X direction; The third conveyor belt, which is connected to the frame, the starting end of the third conveyor belt is located at the end of the second conveyor belt, the conveying direction of the third conveyor belt is the X direction, and a weighing mechanism is provided on the third conveyor belt, and the weighing mechanism is used to weigh the weight of the fruits and vegetables passing through on the third conveyor belt; The film folding mechanism is located on both sides of the starting end of the second conveyor belt, and the film folding mechanism is used to bend and guide the two sides of the packaging film in the Z direction respectively; The middle sealing mechanism is located above the second conveyor belt, and the middle sealing mechanism is located in front of the film folding mechanism with respect to the conveying direction of the second conveyor belt, and the middle sealing mechanism is used to heat-seal and connect the two side edges of the packaging film; The sealing heating and cutting mechanism is located between the second conveyor belt and the third conveyor belt, and the sealing heating and cutting mechanism includes a first sealing heating and cutting component and a second sealing heating and cutting component; the first sealing heating and cutting component includes a first sealing heating and cutting piece body and a vertical movement driving piece, and the vertical movement driving piece is used to drive the first sealing heating and cutting piece body to move in the vertical direction; The first sealing heating and cutting piece includes a first cutting knife arranged linearly in the Y direction, and first sealing heating blocks arranged linearly in the Y direction are respectively provided on both sides of the first cutting knife in the X direction; The sealing heating and cutting mechanism includes a second sealing heating and cutting component and a Y-direction movement driving piece; the second sealing heating and cutting component includes a movable connecting seat and a roller, the roller is rotatably connected to the movable connecting seat, the movable connecting seat is connected to the Y-direction movement driving piece, the Y-direction movement driving piece is used to drive the movable connecting seat to move in the Y direction, and the second sealing heating and cutting component is located above the first sealing heating and cutting component; The axial direction of the roller is the X direction, a circular second cutting knife is provided in the middle of the circumferential surface of the roller, and circular second sealing heating blocks are respectively provided on both sides of the second cutting knife in the X direction, and the second sealing heating blocks are respectively located in the same vertical plane as one of the first sealing heating blocks; The material guiding mechanism is arranged at the end of the third conveyor belt; the material guiding mechanism includes a material guiding plate, and a plurality of balls are hinged on the upper surface of the material guiding plate in an array; a spherical hinge is provided exactly in the middle of the lower part of the material guiding plate, a support column is connected to the lower part of the spherical hinge, and the lower end of the support column is fixedly connected to the frame; four adjusting cylinders are connected to the lower part of the material guiding plate in an array distribution, two of the adjusting cylinders are symmetrically distributed on the Y-direction and the reverse side of the Y-direction of the support column, and the other two adjusting cylinders are symmetrically distributed on the X-direction and the reverse side of the X-direction of the support column, the upper end of the adjusting cylinder is pivotally connected to the lower part of the material guiding plate, and the lower end is pivotally connected to the frame; Collection boxes are respectively provided on the X direction, the Y direction and the reverse side of the Y direction of the material guiding mechanism; A control module, which is electrically connected to the first conveyor belt, the second conveyor belt, the third conveyor belt, the weighing mechanism, the middle sealing mechanism, the vertical movement driving member, and the Y-direction movement driving member respectively.

2. The fruit and vegetable packaging weighing and sorting device according to claim 1, characterized in that One side of the collection box close to the material guiding mechanism is provided with an arc-shaped material guiding inclined surface.

3. The fruit and vegetable packaging weighing and sorting device according to claim 1, characterized in that, The collection box includes a fixed collection box and a movable collection box. The fixed collection box is arranged on the X-direction side of the material guiding mechanism, and the movable collection box is arranged on the Y-direction and the reverse Y-direction sides of the material guiding mechanism. A plurality of the movable collection boxes are distributed in an array along the X-direction, and the moving direction of the movable collection box is the X-direction.

4. The fruit and vegetable packaging weighing and sorting device according to claim 3, characterized in that, It further includes: A first lead screw guide rail module, the axial direction of the lead screw of the first lead screw guide rail module is the X-direction, and the driving motor of the first lead screw guide rail module is electrically connected to the control module; A moving seat, the moving seat is connected to the first lead screw guide rail module, and the movable collection box is arranged on the upper part of the moving seat.

5. The fruit and vegetable packaging weighing and sorting device according to claim 1, characterized in that, The middle sealing mechanism includes two heating conveyor belts symmetrically distributed, and the belt surfaces on the opposite sides of the two heating conveyor belts are mutually attached.

6. The fruit and vegetable packaging weighing and sorting device according to claim 1, wherein, The vertical movement driving member includes a cylinder or a hydraulic cylinder.

7. The fruit and vegetable packaging weighing and sorting device according to claim 1, wherein The Y-direction movement driving member is a second lead screw guide rail module.

8. The fruit and vegetable packaging weighing and sorting device according to claim 7, characterized in that, The length of the second lead screw guide rail module is longer than the length of the first sealing heating block.

9. The packaging weighing and sorting method of the fruit and vegetable packaging weighing and sorting device according to any one of claims 1-8, characterized in that, It includes the following steps: Step 1: The fruits and vegetables to be packaged are placed on the first conveyor belt manually or by a manipulator at a certain interval, so that the fruits and vegetables pass through the second conveyor belt and the third conveyor belt in sequence; Step 2: When the fruits and vegetables pass through the starting end of the second conveyor belt, under the action of the film folding device, the packaging film is guided from the starting end of the conveyor belt to the second conveyor belt. The film folding device bends and guides the two sides of the packaging film in the Y-direction, gathers them, and guides them to the middle sealing mechanism; Step 3: The two sides of the packaging film are hermetically sealed by heat fusion through the middle sealing mechanism, so that the fruits and vegetables are wrapped in a tubular packaging film; Step 4: The fruits and vegetables continue to be conveyed in the X-direction. When the packaging film between two adjacent fruits and vegetables moves to the sealing heating and cutting mechanism, control the Y-direction driving member to drive the connecting seat to move a short distance in the Y-direction, so that the roller is located above one end of the first sealing heating and cutting component; Control the vertical movement driving member to drive the first sealing heating and cutting component to move upward to a position higher than the upper surface of the second conveyor belt, so that one end of the first sealing heating and cutting component contacts the surface of the roller, one end of the first sealing heating block and the lower end of the second sealing heating block are attached, and one end of the first cutting knife and the lower end of the second cutting knife are misaligned and closely attached; Control the Y-direction movement driving member to continue driving the connecting seat to move in the Y-direction, so that the roller rolls on the upper surface of the first sealing heating and cutting component to the other end, cutting the packaging film, and heat-sealing both sides of the cutting position of the packaging film respectively; Control the vertical movement driving member to drive the first sealing heating and cutting component to move downward to a position lower than the upper surface of the second conveyor belt, control the Y-direction movement driving member to drive the connecting seat to move a short distance in the Y-direction, so that the roller moves above the Y-direction side of the first sealing heating and cutting component; Step 5: Control the second conveyor belt and the third conveyor belt to continue driving the fruits and vegetables to be conveyed in the X-direction. When the next packaging film between two adjacent fruits and vegetables moves to the sealing heating and cutting mechanism, repeat the above Step 4; Step 6: The weighing mechanism of the third conveyor belt weighs the fruits and vegetables passing on the third conveyor belt, obtains the weight information of the fruits and vegetables, and sends the weight information to the control module. The control module compares the received weight information with the preset weight information, and controls the corresponding adjusting cylinder to extend or contract, so that the material guiding plate tilts towards one of the collection bins. The third conveyor belt sends the weighed fruits and vegetables to the material guiding plate, and they slide into the corresponding collection bin for collection via the balls on the material guiding plate.

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