Full-automatic bean curd dicing and boxing machine

Abstract

The utility model discloses a full-automatic bean curd dicing and boxing machine which comprises a water tank, a framework is welded to the top of the water tank through a square pipe, and a pushing and lifting device, a slitting device, a lifting device, a dicing device and a subpackaging device are sequentially installed on the framework from front to back to form the processing procedure of bean curd dicing. The pushing and lifting device is used for pushing bean curd blocks to the slitting device, the slitting device is used for slitting the bean curd blocks, the lifting device is used for lifting bean curd strips to the dicing device, the dicing device is used for cutting the bean curd strips into a plurality of uniform small bean curd blocks, and the subpackaging device is used for subpackaging the small bean curd blocks at equal intervals. The chain type conveying belt is used for boxing and conveying bean curd blocks falling off from the subpackaging device, a control electric box is installed on the subpackaging device, and a PLC control system is arranged in the control electric box. According to the full-automatic bean curd dicing machine, only bean curd blocks need to be manually placed in the whole process, full-automatic slitting, dicing and boxing procedures are matched, labor expenditure is greatly saved, and the bean curd dicing production and boxing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of tofu processing equipment, and in particular to a fully automatic tofu cutting and packaging machine. Background Technology

[0002] As a traditional soy product, the industrial production process of tofu typically includes sterilization, coagulation, pressing, cutting, and packaging. Among these, cutting and packaging are crucial steps connecting production and consumption. In traditional processes, the formed tofu needs to be cut into standard blocks and then sorted and packaged into food-grade boxes. Although some companies have introduced semi-automated equipment, such as conveyor belts and cutting machines, these core processes still heavily rely on manual labor, resulting in limited efficiency, high costs, and potential hygiene risks.

[0003] Existing semi-automatic cutting equipment requires workers to manually adjust the position of the tofu to ensure cutting, significantly increasing the frequency of operation. Workers must stand for long periods and perform repetitive bending and carrying actions, resulting in high physical exertion and a risk of muscle strain, leading to a decrease in production efficiency over time. Tofu is delicate and requires careful handling and neat arrangement during packaging to meet aesthetic requirements, still necessitating manual placement. Workers need to precisely control the force and position, resulting in long processing times per operation, limited daily packaging capacity, and a high proportion of labor costs. Utility Model Content

[0004] The purpose of this invention is to provide a fully automatic tofu cutting and packaging machine, which solves the problems of requiring a large number of workers in the tofu cutting and packaging process, resulting in high labor consumption, low production efficiency, and high labor costs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] The fully automatic tofu cutting and packaging machine includes a T-shaped water tank. A frame is welded to the top of the tank using square tubing. From front to back, the frame is equipped with a pushing and lifting device, a strip-cutting device, a lifting device, a cutting device, and a packaging device, forming the tofu cutting process. The pushing and lifting device pushes the tofu blocks from the water tank to the strip-cutting device, which cuts the tofu blocks into strips. The lifting device lifts the cut tofu strips out of the water to the cutting device, which cuts the strips into multiple uniform small tofu pieces and sends them to the packaging device. The packaging device packages the small tofu pieces at equal intervals. A chain conveyor belt is installed below the packaging device to transport the tofu pieces falling from the packaging device into boxes. A control box is installed on the packaging device, containing a PLC control system for controlling the coordinated operation of the pushing and lifting device, the strip-cutting device, the lifting device, the cutting device, the packaging device, and the chain conveyor belt.

[0007] Preferably, the water tank includes a push plate, a fixed plate, a lifting plate, a push plate guide rail, and a limiting plate. The push plate is perpendicular to the fixed plate and is located in the water tank from front to back. The lifting plate is located behind the fixed plate in the water tank. A push plate guide rail in the left-right direction is fixed at the bottom front side of the water tank. The bottom of the push plate is slidably connected to the push plate guide rail by a slider. A limiting plate is movably installed at the upper edge of the push plate and the fixed plate.

[0008] Preferably, the pushing and lifting device includes a rack, a carrier plate guide rod, a translation carrier plate, a stepper motor A, a gear, a pushing and lifting cylinder, a lifting plate, a push plate, a pushing horizontal cylinder, a horizontal adjustment plate, and a limit switch. A rack in the front-to-back direction is fixed to the left side of the frame, and carrier plate guide rods in the front-to-back direction are also fixed to the left and right sides. The bottom of the translation carrier plate is slidably connected to the carrier plate guide rod via a linear bearing slider. A stepper motor A is fixed to the left side of the top surface of the carrier plate guide rod. A gear is fixed to the output end of the stepper motor A, and the gear meshes with the rack. A vertical pushing and lifting cylinder is fixed to the bottom of the translation carrier plate. A lifting plate is fixed to the bottom output end of the pushing and lifting cylinder. A Z-shaped push plate is fixed to the rear side of the lifting plate, protruding a certain distance to the rear. A pushing horizontal cylinder in the front-to-back direction is fixed to the front side. A vertical horizontal adjustment plate is fixed to the rear output end of the pushing horizontal cylinder. The horizontal adjustment plate is hollow. Limit switches are fixedly installed at the front and rear ends of the rack.

[0009] Preferably, the slicing device includes side plates, a rodless cylinder, a blade holder plate, a guide mechanism, a blade, a blade, and a proximity switch. Side plates are welded to the left and right sides of the rear of the frame. A rodless cylinder and a guide mechanism are fixedly installed between the two side plates. A vertical blade holder plate is fixed to the movable slider on the rodless cylinder and moves steadily through the guide mechanism. A vertical blade is fixed on the blade holder plate, and a blade is fixed at the bottom of the blade. The blade is located in the gap between the fixed plate and the lifting plate. A proximity switch is fixedly installed on each of the two side plates.

[0010] Preferably, the lifting device includes a vertical plate, a vertical plate guide sleeve, a lifting cylinder, a connecting plate, and a lifting rod. The vertical plate is bolted to the rear side of the frame. Vertical plate guide sleeves are fixed to the left and right sides of the vertical plate, respectively. A vertical lifting cylinder is fixedly installed on the frame above the vertical plate. A horizontal connecting plate is fixed to the bottom output end of the lifting cylinder. Vertical lifting rods are fixed to the left and right ends of the connecting plate, respectively. The bottom of the lifting rod is fixed to the top surface of the lifting plate, and the middle part is slidably connected to the vertical plate guide sleeve.

[0011] Preferably, the slicing device includes a cylinder frame, a vertical slicing cylinder, a horizontal cylinder connecting plate, a horizontal slicing cylinder, a pull plate, a height rod, and slicing blades. A horizontal rectangular cylinder frame is welded to the rear side of the frame. The vertical slicing cylinder is fixedly installed on the cylinder frame. The horizontal cylinder connecting plate is fixed to the bottom output end of the vertical slicing cylinder. A horizontal slicing cylinder in the front-back direction is fixed to the bottom surface of the horizontal cylinder connecting plate. A pull plate is fixed to the front end of the horizontal slicing cylinder. A height rod in the left-right direction is welded to the frame at the lowest position of the pull plate. Three equidistant slicing blades are fixed on the height rod.

[0012] Preferably, the dispensing device includes a dispensing frame, a push-pull carrier plate, a push-pull cylinder, a push-pull carrier plate guide sleeve, a push-pull carrier plate guide shaft, a receiving plate, and a baffle plate. The dispensing frame is a rectangular frame, horizontally welded to the rear side of the skeleton and located above the height bar. A U-shaped push-pull carrier plate is provided at the center of the dispensing frame. The push-pull carrier plate moves back and forth through the push-pull cylinder at the rear end, and the push-pull cylinder is fixed on the dispensing frame. Push-pull carrier plate guide sleeves are fixed on the left and right sides of the push-pull carrier plate respectively. Vertical support legs are welded to the four corners of the dispensing frame, and push-pull carrier plate guide shafts in the front-back direction are fixed to the support legs on the left and right sides. The push-pull carrier plate guide sleeve on the same side is slidably connected to the push-pull carrier plate guide shaft. Four receiving plates are installed at the bottom of the push-pull carrier plate, and baffle plates in the left and right directions are welded on the dispensing frame.

[0013] Preferably, the dispensing device further includes an equidistant dispensing device that distributes the receiving plates equidistantly on the left and right. The equidistant dispensing device includes a receiving plate guide shaft, a guide sleeve, a positioning bolt, and an equidistant dispensing cylinder. Two receiving plate guide shafts are fixed to the bottom of the push-pull carrier plate in the left and right directions. Four sets of guide sleeves are slidably connected along the receiving plate guide shafts. Each set of guide sleeves has a receiving plate fixed at its bottom. The third set of guide sleeves from left to right is fixed to the receiving plate guide shaft by the positioning bolt, so that the corresponding receiving plate cannot move left or right. The bottom of this receiving plate is fixed with an equidistant dispensing cylinder facing opposite directions. The output end of the equidistant dispensing cylinder is fixed to the second and fourth receiving plates respectively. The bottom of the second receiving plate is also fixed with an equidistant dispensing cylinder in the left and right directions. The output end of this equidistant dispensing cylinder is fixed to the bottom of the first receiving plate.

[0014] Preferably, the chain conveyor belt includes a conveyor belt support, a conveyor chain, a stepper motor B, a packaging box tray, a packaging box pusher, a guard rod, and a packaging box. The conveyor belt support is oriented left-right and is located directly below the height bar and the baffle plate. The conveyor chain on the conveyor belt support is driven by the stepper motor B via a sprocket drive. L-shaped packaging box trays are fixed to the sleeves on both sides of the joint of the conveyor chain to support the packaging boxes. Packaging box pushers are fixed at equal intervals on the packaging box trays. Guard rods are fixed at the front and rear positions of the conveyor belt support.

[0015] This utility model has the following beneficial effects:

[0016] The stepper motor A of the pusher lifting device drives the horizontal adjustment plate and push plate to move the tofu block horizontally to the cutting position. Then, in conjunction with the pusher lifting cylinder, it performs reciprocating operation. The rodless cylinder of the cutting device drives the blade to automatically cut the tofu block into strips. The lifting device's lifting cylinder automatically brings the tofu strips to the cutting device. The pulling plate and the cutting blade cut the tofu strips into small pieces. The push-pull cylinder and the equidistant dividing plate cylinder of the packaging device automatically and evenly separate the tofu pieces and drop them into the packaging boxes of the chain conveyor belt for conveying. The entire process only requires manual placement of the tofu blocks. Combined with the fully automatic cutting, dicing, and boxing processes, it greatly saves labor costs and improves the production and boxing efficiency of tofu cutting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0018] Figure 2 This is a side view of the present invention;

[0019] Figure 3 This is a side view of the pushing and lifting device of this utility model;

[0020] Figure 4 This is a schematic diagram of the external structure of the slicing device of this utility model;

[0021] Figure 5 This is a schematic diagram of the external structure of the lifting device of this utility model;

[0022] Figure 6 This is a schematic diagram of the external structure of the cutting device of this utility model;

[0023] Figure 7 This is a side view of the cutting device of this utility model;

[0024] Figure 8 This is a schematic diagram of the external structure of the dispensing device of this utility model;

[0025] Figure 9 This is a schematic diagram of the external structure of the equidistant material distribution device of this utility model;

[0026] Figure 10 This is a schematic diagram of the position of the chain conveyor belt of this utility model;

[0027] Figure 11 This is a schematic diagram of the chain conveyor belt structure of this utility model;

[0028] Icons: 1. Pool; 11. Frame; 12. Push plate; 13. Fixing plate; 14. Lifting plate; 15. Push plate guide rail; 16. Limiting plate; 2. Pushing and lifting device; 21. Rack; 22. Carrier plate guide rod; 23. Translation carrier plate; 24. Stepper motor A; 25. Gear; 26. Pushing and lifting cylinder; 27. Lifting plate; 28. Push plate; 29. ​​Pushing horizontal cylinder; 210. Horizontal adjustment plate; 211. Limit switch; 3. Cutting device; 31. Side plate; 32. Rodless cylinder; 33. Knife holder plate; 34. Guide mechanism; 35. Knife strip; 36. Blade; 37. Proximity switch; 4. Lifting device; 41. Vertical plate; 42. Vertical plate guide sleeve; 43. Lifting cylinder; 44. Connecting plate; 45. Lifting rod; 5. Cutting 51. Block cutting device; 52. Cylinder frame; 53. Vertical cutting cylinder; 54. Horizontal cylinder connecting plate; 55. Horizontal cutting cylinder; 56. Pull plate; 57. Height rod; 6. Slitting blade; 6. Packaging device; 61. Packaging rack; 62. Push-pull carrier plate; 63. Push-pull cylinder; 64. Push-pull carrier plate guide sleeve; 65. Push-pull carrier plate guide shaft; 66. Receiving plate; 67. Baffle plate; 68. Equal distance separating device; 681. Receiving plate guide shaft; 682. Guide sleeve; 683. Positioning bolt; 684. Equal distance separating plate cylinder; 7. Chain conveyor belt; 71. Conveyor belt bracket; 72. Conveyor chain; 73. Stepper motor B; 74. Packaging box tray; 75. Packaging box push plate; 76. Protective rod; 77. Packaging box; 8. Control box. Detailed Implementation

[0029] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] like Figure 1-11As shown, in this embodiment, the fully automatic tofu cutting and packaging machine includes a T-shaped water tank 1. Tofu is placed in the water tank 1, where the buoyancy of the water supports the tofu, preventing it from collapsing or deforming under gravity. The water also isolates the tofu from air, preventing it from drying out or oxidizing and discoloring, thus maintaining its moisture and fresh color. A frame 11 is welded to the top of the water tank 1 via square tubing. From front to back, the frame 11 is equipped with a pushing and lifting device 2, a cutting device 3, a lifting device 4, a cutting device 5, and a packaging device 6, forming the tofu cutting process. The pushing and lifting device 2 pushes the tofu blocks in the water tank 1 to the cutting device 3, which then cuts the tofu blocks into smaller pieces. The tofu blocks are cut into strips. The lifting device 4 is used to lift the cut tofu strips out of the water to the cutting device 5. The cutting device 5 is used to cut the tofu strips into multiple uniform small tofu pieces and send them to the packaging device 6. The packaging device 6 is used to package the multiple small tofu pieces at equal intervals. A chain conveyor belt 7 is set below the packaging device 6. The chain conveyor belt 7 is used to pack and transport the tofu pieces falling from the packaging device 6 into boxes. A control box 8 is installed on the packaging device 6. The control box 8 is equipped with a PLC control system, which is used to control the coordinated operation of the pushing and lifting device 2, the cutting device 3, the lifting device 4, the cutting device 5, the packaging device 6 and the chain conveyor belt 7.

[0032] like Figure 1 As shown, the pool 1 includes a pusher plate 12, a fixed plate 13, a lifting plate 14, a pusher plate guide rail 15, and a limiting plate 16. The pusher plate 12 is perpendicular to the fixed plate 13 and is located in the pool 1 from front to back. The lifting plate 14 is located behind the fixed plate 13 in the pool 1 and can lift the cut tofu strips to the cutting device 5 via the lifting device 4. The pusher plate guide rail 15 in the left and right direction is fixed at the bottom front side of the pool 1. The bottom of the pusher plate 12 is slidably connected to the pusher plate guide rail 15 via a slider. The pusher plate 12 is used to place tofu blocks. By manually sliding it left and right, it alternately conveys the tofu blocks with the fixed plate 13, so that the pusher lifting device 2 conveys the tofu blocks to the fixed plate 13. The limiting plate 16 is movably installed at the upper edge of the pusher plate 12 and the fixed plate 13. The limiting plate 16 is installed by a telescopic shaft and bolts and can be freely adjusted to reach the center of the pool 1, which plays a role in laterally constraining the position of the tofu blocks.

[0033] like Figure 1-3As shown, the pushing and lifting device 2 includes a rack 21, a carrier plate guide rod 22, a translation carrier plate 23, a stepper motor A24, a gear 25, a pushing and lifting cylinder 26, a lifting plate 27, a push plate 28, a pushing and leveling cylinder 29, a horizontal adjustment plate 210, and a limit switch 211. A rack 21 in the front-to-back direction is fixed to the left side of the frame 11, and a carrier plate guide rod 22 in the front-to-back direction is also fixed to the left and right sides. The bottom of the translation carrier plate 23 is slidably connected to the carrier plate guide rod 22 via a linear bearing slider. A stepper motor A24 is fixed to the left side of the top surface of the carrier plate guide rod 22. The stepper motor A24 is wired to the control box 8 and controlled by a PLC. A gear 25 is fixed to the output end of the stepper motor A24, and the gear 25 meshes with the rack 21 to facilitate the control of the translation carrier plate 23's front-to-back movement. A vertical pushing and lifting cylinder is fixed to the bottom of the translation carrier plate 23. The cylinder 26 has a lifting plate 27 fixed at its bottom output end. The lifting plate 27 is controlled to move up and down to raise the height and push the tofu. A Z-shaped push plate 28 is fixed at the rear of the lifting plate 27. The push plate 28 protrudes a certain distance to the rear so that the push plate 28 can push the tofu to be cut from the fixed plate 13 to the lifting plate 14. Space is left for the translation carrier plate 23 to the rear end of the frame 11 to install the cutting device 3 and the lifting device 4. A push horizontal cylinder 29 is fixed at the front. A vertical horizontal adjustment plate 210 is fixed at the rear output end of the push horizontal cylinder 29 to adjust the distance between the horizontal cylinder 29 and the push plate 28 according to the size of the tofu. The horizontal adjustment plate 210 is hollow to facilitate water flow when pushing the tofu. Limit switches 211 are fixedly installed at the front and rear ends of the rack 21 to limit the forward and backward movement distance of the translation carrier plate 23.

[0034] Specifically, stepper motor A24 is wired to control box 8. PLC controls the rotation angle of stepper motor A24 via pulse signals, receives position signals from limit switch 211, and performs cyclic operations of forward feeding, dwell, and reset. Push lifting cylinder 26 and push horizontal cylinder 29 are controlled by PLC to achieve cylinder action via solenoid valves, and are linked to the position control of stepper motor A24. After each tofu block is cut into strips by cutting device 3, the cut tofu strips are lifted by lifting device 4 to block cutting device 5. The push plate 28 is controlled to gradually push the remaining tofu blocks onto lifting plate 14, gradually completing the cutting of whole tofu blocks into strips.

[0035] like Figure 4As shown, the slicing device 3 includes a side plate 31, a rodless cylinder 32, a blade holder plate 33, a guide mechanism 34, a blade 35, a blade 36, and a proximity switch 37. Side plates 31 are welded to the left and right rear sides of the frame 11. A rodless cylinder 32 and a guide mechanism 34 are fixedly installed between the two side plates 31. A vertical blade holder plate 33 is fixed to the movable slider on the rodless cylinder 32, and the slider moves steadily through the guide mechanism 34. The guide mechanism 34 consists of a guide shaft and a linear bearing slider. The two ends of the guide shaft are fixed to the side plates 31, and the linear bearing slider… The block is fixed to the blade holder plate 33 to reduce the impact of the blade holder plate 33's vibration on the cutting accuracy. A vertical blade strip 35 is fixed on the blade holder plate 33, and a blade 36 is fixed at the bottom of the blade strip 35. The blade 36 is located in the gap between the fixed plate 13 and the lifting plate 14 to facilitate the blade 36's left and right movement, making horizontal reciprocating cuts in the tofu layer to form a uniform strip structure. Proximity switches 37 are fixedly installed on the two side plates 31 respectively to detect the position of the blade holder plate 33 and limit its movement range to ensure the accuracy of the cutting stroke.

[0036] Specifically, after the pusher plate 28 pushes the tofu block, the rodless cylinder 32 outputs a signal through the PLC to energize the solenoid valve. The moving slider on the rodless cylinder 32 drives the cutter plate 33 and the blade 36 to move in the specified direction, and stops through the position feedback signal of the proximity switch 37. After the pusher plate 28 pushes the tofu block again, the moving direction of the moving slider on the rodless cylinder 32 is switched to complete the next strip cutting.

[0037] like Figure 5 As shown, the lifting device 4 includes a vertical plate 41, a vertical plate guide sleeve 42, a lifting cylinder 43, a connecting plate 44, and a lifting rod 45. The vertical plate 41 is bolted to the rear side of the frame 11. The vertical plate guide sleeve 42 is fixed to the left and right sides of the vertical plate 41, respectively. The vertical lifting cylinder 43 is fixedly installed on the frame 11 above the vertical plate 41. The bottom output end of the lifting cylinder 43 is fixed to a horizontal connecting plate 44. The left and right ends of the connecting plate 44 are fixed to vertical lifting rods 45, respectively. The bottom of the lifting rod 45 is fixed to the top surface of the lifting plate 14 to facilitate the lifting of the cut tofu strips, and the middle part is slidably connected to the vertical plate guide sleeve 42 to play a vertical guiding role.

[0038] Specifically, the lifting cylinder 43 controls the extension and retraction of the cylinder through the output signal of the PLC, and the rodless cylinder 32 lifts the tofu after completing one movement, lifting it to the cutting device and returning it, thus realizing the automated lifting process.

[0039] like Figure 6-7As shown, the slicing device 5 includes a cylinder frame 51, a vertical slicing cylinder 52, a horizontal cylinder connecting plate 53, a horizontal slicing cylinder 54, a pull plate 55, a height rod 56, and a slicing blade 57. A horizontal rectangular cylinder frame 51 is welded to the rear side of the frame 11. The vertical slicing cylinder 52 is fixedly installed on the cylinder frame 51. The cylinder extension and retraction are controlled by a PLC output signal. The horizontal cylinder connecting plate 53 is fixed to the bottom output end of the vertical slicing cylinder 52. The bottom surface of the horizontal cylinder connecting plate 53 is fixed. A horizontal cutting cylinder 54 with a front-to-back direction is controlled by a PLC output signal to extend and retract. A pull plate 55 is fixed to the front end of the horizontal cutting cylinder 54. A left-to-right height rod 56 is welded to the frame 11 at the lowest position of the pull plate 55. The maximum height of the lifting plate 14 is flush with the height rod 56 so that the pull plate 55 can pull the tofu strips onto the height rod 56. Three equidistant cutting blades 57 are fixed on the height rod 56 to cut the tofu strips into four uniform small tofu blocks.

[0040] like Figure 7-8 As shown, the dispensing device 6 includes a dispensing frame 61, a push-pull carrier plate 62, a push-pull cylinder 63, a push-pull carrier plate guide sleeve 64, a push-pull carrier plate guide shaft 65, a receiving plate 66, and a baffle plate 67. The dispensing frame 61 is a rectangular frame, horizontally welded to the rear side of the skeleton 11 and located above the height rod 56. A U-shaped push-pull carrier plate 62 is provided at the center of the dispensing frame 61. The push-pull carrier plate 62 moves back and forth through the push-pull cylinder 63 controlled by the output signal of the rear PLC. The push-pull cylinder 63 is fixed on the dispensing frame 61. Push-pull carrier plate guide sleeves 64 are fixed on the left and right sides of the push-pull carrier plate 62, respectively. The mounting frame 61 has vertical support legs welded at its four corners, and the support legs on the left and right sides are fixed with push-pull plate guide shafts 65 in the front-to-back direction. The push-pull plate guide sleeve 64 on the same side is slidably connected to the push-pull plate guide shaft 65 for guiding the push-pull plate 62. The bottom of the push-pull plate 62 is equipped with four receiving plates 66, which are flush with the height bar 56 and are used to catch four small tofu blocks respectively. The sub-packing frame 61 has left-to-right baffle plates 67 welded on it. The baffle plates 67 are located above the receiving plates 66 and are used to prevent the small tofu blocks from moving horizontally, so that the small tofu blocks fall onto the chain conveyor belt 7 below.

[0041] like Figure 9As shown, the dispensing device 6 also includes an equidistant dispensing device 68 that distributes the receiving plates 66 equidistantly to the left and right. The equidistant dispensing device 68 includes a receiving plate guide shaft 681, a guide sleeve 682, a positioning bolt 683, and an equidistant dispensing cylinder 684. Two receiving plate guide shafts 681 are fixed to the bottom of the push-pull carrier plate 62 in the left and right directions. Four sets of guide sleeves 682 are slidably connected along the receiving plate guide shafts 681. Each set of guide sleeves 682 has a receiving plate 66 fixed to its bottom, which guides the left and right movement of the receiving plates 66. The third set of guide sleeves 682 from left to right is fixed to the receiving plate guide shaft 681 by the positioning bolt 683, so that the corresponding receiving plate 66 cannot move left or right. Move to the right to position the base plate of this receiving plate 66, causing the other receiving plates 66 to move to both sides. The bottom of this receiving plate 66 is fixed with equidistant plate-separating cylinders 684 facing opposite directions. The output ends of these two equidistant plate-separating cylinders 684 facing opposite directions are fixed to the second and fourth receiving plates 66 respectively. The bottom of the second receiving plate 66 is also fixed with equidistant plate-separating cylinders 684 in the left and right directions. The output end of these equidistant plate-separating cylinders 684 is fixed to the bottom of the first receiving plate 66. The three equidistant plate-separating cylinders 684 are controlled to run simultaneously by the output signal of the PLC, so that the four receiving plates 66 are simultaneously separated laterally to an equal distance, so that the four small tofu blocks fall at equal intervals, which is convenient for subsequent boxing.

[0042] like Figure 10-11 As shown, the chain conveyor belt 7 includes a conveyor belt support 71, a conveyor chain 72, a stepper motor B73, a packaging box tray 74, a packaging box pusher 75, a guard rod 76, and a packaging box 77. The conveyor belt support 71 is oriented left-right and is located directly below the height rod 56 and the baffle plate 67. The conveyor chain 72 on the conveyor belt support 71, driven by a sprocket, is driven by the stepper motor B73. The stepper motor B73 is wired to the control box 8, and the PLC controls the stepper motor A24 via pulse signals. In intermittent operation, L-shaped packaging box trays 74 are fixed to the sleeves on both sides of the joint of the conveyor chain 72 to support the packaging boxes 77. Packaging box push plates 75 are fixed at equal intervals on the packaging box trays 74 for conveying the packaging boxes 77 at equal intervals. The spacing of the packaging boxes 77 is the same as the maximum spacing of the receiving plate 66, which makes it easy for small tofu blocks to fall accurately into the packaging boxes 77. Protective rods 76 are fixed at the front and rear positions of the conveyor belt bracket 71 to keep the packaging boxes 77 always on the packaging box trays 74.

[0043] The working principle of this utility model is as follows:

[0044] The worker places the tofu block to be cut on one side of the top surface of the pusher plate 12. The worker manually slides the pusher plate 12 to move it along the pusher plate guide rail 15, so that the tofu block on one side of the pusher plate 12 moves to the front end of the fixed plate 13. The other side of the pusher plate 12 is close to the side of the pool 1, and then the other side is placed with tofu blocks, so that the left and right sides of the pusher plate 12 are alternately placed with tofu blocks.

[0045] After receiving instructions from the PLC, stepper motor A24 drives gear 25 at its output end to mesh with rack 21, causing the translational carrier plate 23 to move forward linearly along the carrier plate guide rod 22 to above the tofu block. Pushing lifting cylinder 26 operates according to the PLC signal, pushing lifting plate 27 up and down. Pushing horizontal cylinder 29 drives horizontal adjusting plate 210 to move back and forth, dynamically adjusting the clamping distance with push plate 28 according to the tofu size. Through the action of stepper motor A24, the tofu block is moved from push plate 12 to fixed plate 13. Push plate 28, through the lifting of pushing lifting cylinder 26 and the back-and-forth movement of stepper motor A24, pushes the rear end of the tofu block to the lifting plate 14.

[0046] The cutting device 3 drives the blade holder plate 33 to move left and right along the guide mechanism 34 via the rodless cylinder 32, which in turn drives the blade 36 at the bottom of the blade strip 35 to move laterally in the gap between the fixed plate 13 and the lifting plate 14, thereby realizing the cutting operation of tofu into strips.

[0047] The lifting cylinder 43 drives the lifting rod 45 to rise and fall vertically through the connecting plate 44, which in turn drives the lifting plate 14 to lift the cut tofu strips.

[0048] When the lifting plate 14 raises the tofu strip to be level with the height bar 56, the PLC triggers the vertical cutting cylinder 52 to work, which drives the horizontal cutting cylinder 54 and the pull plate 55 to move down as a whole through the horizontal cylinder connecting plate 53. After the pull plate 55 is pressed down, the horizontal cutting cylinder 54 pushes the pull plate 55 forward, transferring the tofu strip from the lifting plate 14 to the height bar 56. The three cutting blades 57 fixed to the height bar 56 complete the four-part cutting of the tofu strip. After the cutting is completed, the horizontal cutting cylinder 54 resets and retracts the pull plate 55. The vertical cutting cylinder 52 drives the entire mechanism to rise and reset. The lifting plate 14 is reset to the lowest position through the lifting cylinder 43. The push plate 28 pushes the rear end of the remaining tofu block back onto the lifting plate 14, forming a cycle.

[0049] After the cutting device completes the four-part cutting of the tofu block, the small tofu block is precisely moved onto the receiving plate 66 by the pull plate 55. The three equally spaced plate-separating cylinders 684 operate simultaneously, so that the four receiving plates 66 are horizontally separated to equal distances. The push-pull cylinder 63 drives the push-pull carrier plate 62 to move backward along the push-pull carrier plate guide shaft 65. At this time, the baffle plate 67 remains fixed, preventing the small tofu block from moving horizontally with the receiving plate 66. When the receiving plate 66 completely exits the area covered by the baffle plate 67, the small tofu block loses its support and falls vertically onto the chain conveyor belt 7 below under the action of gravity.

[0050] Stepper motor B73 starts and drives conveyor chain 72 to perform intermittent cyclical motion through sprocket transmission. Packaging box pusher plate 75 pushes packaging box 77 forward at fixed intervals. This interval is consistent with the maximum unfolding interval of receiving plate 66. Each time, conveyor chain 72 moves four packaging boxes 77 to the corresponding four receiving plates 66, ensuring that the cut tofu pieces can fall accurately into the corresponding packaging box 77.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully automatic tofu cutting and packaging machine, characterized in that, The system includes a T-shaped water tank (1), the top of which is welded with a frame (11) through square tubes. The frame (11) is equipped with a pushing and lifting device (2), a strip cutting device (3), a lifting device (4), a block cutting device (5), and a dispensing device (6) in sequence from front to back, forming the tofu cutting process. The pushing and lifting device (2) is used to push the tofu blocks in the pool (1) to the cutting device (3). The cutting device (3) is used to cut the tofu blocks into strips. The lifting device (4) is used to lift the cut tofu strips out of the water and onto the cutting device (5). The cutting device (5) is used to cut the tofu strips into multiple uniform small tofu pieces and send them to the packaging device (6). The dispensing device (6) includes a dispensing frame (61), a push-pull carrier plate (62), a push-pull cylinder (63), a push-pull carrier plate guide sleeve (64), a push-pull carrier plate guide shaft (65), a receiving plate (66), and a baffle plate (67). The dispensing frame (61) is a rectangular frame, horizontally welded to the rear side of the skeleton (11). A U-shaped push-pull carrier plate (62) is provided at the center of the dispensing frame (61). The push-pull carrier plate (62) moves back and forth through the push-pull cylinder (63) at the rear end. The push-pull cylinder (63) is fixed to the dispensing frame. On the mounting frame (61), push-pull plate guide sleeves (64) are fixed on the left and right sides of the push-pull plate (62). Vertical support legs are welded to the four corners of the sub-assembly frame (61), and push-pull plate guide shafts (65) in the front-back direction are fixed to the support legs on the left and right sides. The push-pull plate guide sleeves (64) on the same side are slidably connected to the push-pull plate guide shafts (65). Four receiving plates (66) are installed at the bottom of the push-pull plate (62), and baffle plates (67) in the left and right directions are welded on the sub-assembly frame (61). The dispensing device (6) further includes an equidistant dispensing device (68) that distributes the receiving plates (66) equidistantly on the left and right. The equidistant dispensing device (68) includes a receiving plate guide shaft (681), a guide sleeve (682), a positioning bolt (683), and an equidistant dispensing cylinder (684). Two receiving plate guide shafts (681) are fixed to the bottom of the push-pull carrier plate (62) in the left and right directions. Four sets of guide sleeves (682) are slidably connected along the receiving plate guide shafts (681). Each set of guide sleeves (682) has a receiving plate (66) fixed at its bottom. From left to right, the first... Three sets of guide sleeves (682) are fixed to the receiving plate guide shaft (681) by positioning bolts (683), so that the corresponding receiving plate (66) cannot move left or right. The bottom of this receiving plate (66) is fixed with equidistant plate-splitting cylinders (684) facing opposite directions. The output ends of the equidistant plate-splitting cylinders (684) are fixed to the second and fourth receiving plates (66) respectively. The bottom of the second receiving plate (66) is also fixed with equidistant plate-splitting cylinders (684) facing left and right. The output end of the equidistant plate-splitting cylinders (684) is fixed to the bottom of the first receiving plate (66). The dispensing device (6) is used to dispense multiple small pieces of tofu at equal intervals. A chain conveyor belt (7) is provided below the dispensing device (6). The chain conveyor belt (7) is used to pack and transport the tofu blocks falling from the dispensing device (6) into boxes. The packaging device (6) is equipped with a control box (8), which contains a PLC control system for controlling the coordinated operation of the push lifting device (2), the strip cutting device (3), the lifting device (4), the block cutting device (5), the packaging device (6), and the chain conveyor belt (7).

2. The full-automatic bean curd dicing and boxing machine according to claim 1, characterized in that, The pool (1) includes a push plate (12), a fixed plate (13), a lifting plate (14), a push plate guide rail (15), and a limiting plate (16). The push plate (12) is perpendicular to the fixed plate (13) and is located in the pool (1) from front to back. The lifting plate (14) is located behind the fixed plate (13) in the pool (1). The push plate guide rail (15) in the left and right direction is fixed at the bottom front side of the pool (1). The bottom of the push plate (12) is slidably connected to the push plate guide rail (15) through a slider. The limiting plate (16) is movably installed at the upper edge of the push plate (12) and the fixed plate (13).

3. The fully automatic bean curd dicing and boxing machine according to claim 2, characterized in that, The pushing and lifting device (2) includes a rack (21), a carrier plate guide rod (22), a translation carrier plate (23), a stepper motor A (24), a gear (25), a pushing and lifting cylinder (26), a lifting plate (27), a push plate (28), a pushing horizontal cylinder (29), a horizontal adjustment plate (210), and a limit switch (211). The rack (21) in the front-to-back direction is fixed on the left side of the frame (11), and the carrier plate guide rod (22) in the front-to-back direction is also fixed on the left and right sides. The bottom of the translation carrier plate (23) is slidably connected to the carrier plate guide rod (22) through a linear bearing slider. The stepper motor A (24) is fixed on the left side of the top surface of the carrier plate guide rod (22). A gear (25) is fixed at the output end of motor A (24), and the gear (25) meshes with the rack (21). A vertical push lifting cylinder (26) is fixed at the bottom of the translational carrier plate (23). A lifting plate (27) is fixed at the bottom output end of the push lifting cylinder (26). A Z-shaped push plate (28) is fixed at the rear side of the lifting plate (27). The push plate (28) protrudes a certain distance to the rear side. A push horizontal cylinder (29) in the front direction is fixed at the front side. A vertical horizontal adjustment plate (210) is fixed at the output end of the push horizontal cylinder (29). The horizontal adjustment plate (210) is hollow. Limit switches (211) are fixed at the front and rear ends of the rack (21).

4. The fully automatic tofu cutting and packaging machine according to claim 3, characterized in that, The slicing device (3) includes a side plate (31), a rodless cylinder (32), a blade holder plate (33), a guide mechanism (34), a blade (35), a blade (36), and a proximity switch (37). The frame (11) has side plates (31) welded to the left and right sides. The rodless cylinder (32) and the guide mechanism (34) are fixedly installed between the two side plates (31). The moving slider on the rodless cylinder (32) is fixed with a vertical blade holder plate (33) and moves steadily through the guide mechanism (34). The blade holder plate (33) is fixed with a vertical blade (35). The blade (36) is fixed at the bottom of the blade (35). The blade (36) is located in the gap between the fixed plate (13) and the lifting plate (14). The two side plates (31) are respectively fixedly installed with proximity switches (37).

5. The fully automatic bean curd dicing and boxing machine according to claim 4, characterized in that, The lifting device (4) includes a vertical plate (41), a vertical plate guide sleeve (42), a lifting cylinder (43), a connecting plate (44), and a lifting rod (45). The vertical plate (41) is bolted to the rear side of the frame (11). The vertical plate guide sleeve (42) is fixed on the left and right sides of the vertical plate (41). The vertical lifting cylinder (43) is fixed on the frame (11) above the vertical plate (41). The bottom output end of the lifting cylinder (43) is fixed with a horizontal connecting plate (44). The left and right ends of the connecting plate (44) are fixed with vertical lifting rods (45). The bottom of the lifting rod (45) is fixed to the top surface of the lifting plate (14), and the middle part is slidably connected to the vertical plate guide sleeve (42).

6. The fully automatic tofu cutting and packaging machine according to claim 5, characterized in that, The dicing device (5) includes a cylinder frame (51), a dicing vertical cylinder (52), a horizontal cylinder connecting plate (53), a dicing horizontal cylinder (54), a pull plate (55), a height rod (56), and dicing blades (57). A horizontal rectangular cylinder frame (51) is welded to the rear side of the frame (11). A dicing vertical cylinder (52) is fixedly installed on the cylinder frame (51). A horizontal cylinder connecting plate (53) is fixed to the bottom output end of the dicing vertical cylinder (52). A dicing horizontal cylinder (54) in the front-back direction is fixed to the bottom surface of the horizontal cylinder connecting plate (53). A pull plate (55) is fixed to the front end of the dicing horizontal cylinder (54). A height rod (56) in the left-right direction is welded to the frame (11) at the lowest position of the pull plate (55). Three equidistant dicing blades (57) are fixed on the height rod (56).

7. The fully automatic bean curd dicing and boxing machine according to claim 6, characterized in that, The chain conveyor belt (7) includes a conveyor belt support (71), a conveyor chain (72), a stepper motor B (73), a packaging box tray (74), a packaging box pusher (75), a guard rod (76), and a packaging box (77). The conveyor belt support (71) is oriented left and right and is located directly below the height bar (56) and the baffle plate (67). The conveyor chain (72) on the conveyor belt support (71) is driven by a sprocket and driven by a stepper motor B (73). L-shaped packaging box trays (74) are fixed to the sleeves on both sides of the joint of the conveyor chain (72) to support the packaging box (77). Packaging box pushers (75) are fixed at equal intervals on the packaging box tray (74). Guard rods (76) are fixed at the front and rear positions of the conveyor belt support (71).

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