Automatic production line and forming method for dried bean curd

Abstract

This invention discloses an automated production line and method for forming dried tofu, relating to the field of dried tofu preparation technology. It includes a tofu curdling tank; a feeding rack with a feeding tank mounted on top and a feeding head positioned downwards at the bottom of the feeding tank; a reciprocating frame-type base frame with a conveyor roller assembly inside, on which a pressing frame is supported; the pressing frame circulates on the reciprocating frame-type base frame; an upper frame mounted on the reciprocating frame-type base frame, including a pressing component and a conveying component, the conveying component being located at the end of the reciprocating frame-type base frame away from the feeding rack; a permeable plate conveyor frame, including a long conveyor frame and a deflecting feeding frame; a conveyor belt installed inside the long conveyor frame; a feeding component installed at the head of the long conveyor frame, which pushes a single set of permeable plates into the conveyor belt at a time; a feeding clamp installed inside the deflecting feeding frame; and a cutting machine to cut the tofu product into pieces, thus solving the technical problems of existing technologies where curdled tofu lacks multi-layer laying and automated feeding in the pressing frame.

Description

Technical Field

[0001] This invention relates to the field of dried bean curd preparation technology, and in particular to an automated production line and method for forming dried bean curd. Background Technology

[0002] During the processing of dried tofu, the curdled tofu is squeezed by the pressing cylinder in the output pressing frame to remove moisture, turning the tofu into dried tofu blocks; after pressing, it is transported to the end for unloading, and the workers take off the pressed dried tofu blocks and transfer them to the cutting equipment.

[0003] The prior art CN202420035642.4 describes a bean curd forming frame turnover device. This utility model achieves automatic turnover of the forming frame body by setting up a first conveying mechanism, a second conveying mechanism, a third conveying mechanism, and a turnover mechanism. This replaces the manual method of carrying the forming frame body off the end of the extrusion line and then carrying it to the beginning of the extrusion line, thus reducing the physical exertion of workers.

[0004] However, the following problems exist:

[0005] 1. The current method of extruding and molding soybean residue does not restrict the use of multiple layers. During extrusion, the soybean residue is easily squeezed out from the side of the drain hole, causing blockage and material discharge, resulting in unstable molding effect.

[0006] 2. In the multi-layer breathable board-cloth-brine tofu laying structure, it is necessary to lay each layer. Traditionally, there is no automatic transmission structure to facilitate laying. Manual laying is labor-intensive and prone to errors.

[0007] 3. Most existing injection heads use valves to control the injection, but on the one hand, the fixed position can easily interfere with the air permeable plate feeding, and on the other hand, raw materials can easily drip continuously after the valve is closed.

[0008] Therefore, this invention proposes an automated production line and forming method for dried bean curd to solve the above problems. Summary of the Invention

[0009] To overcome the above deficiencies, the present invention provides an automatic production line and method for forming dried bean curd, which solves the technical problems of lack of multi-layer laying and automatic feeding in the pressing frame of the existing technology for making braised tofu.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] An automated production line for forming dried bean curd includes:

[0012] A tofu curdling barrel is used to curdle the raw materials into shape.

[0013] The feeding rack has a feeding tank installed on the top, and a feeding head is installed at the bottom of the feeding tank facing downwards; a telescopic pipe is installed between the feeding tank and the tofu curd barrel.

[0014] The reciprocating frame base has a conveyor roller assembly installed inside, and the pressing frame is supported on the conveyor roller assembly; the pressing frame circulates on the reciprocating frame base.

[0015] The upper frame is installed on the upper part of the reciprocating frame base frame and includes a pressing assembly and a conveying assembly. The conveying assembly is located at the end of the reciprocating frame base frame away from the filling frame.

[0016] The permeable panel conveyor frame includes a long conveyor frame and a turning feeder frame; a conveyor belt is installed inside the long conveyor frame for transporting the permeable panels; an infeed assembly is installed at the head of the long conveyor frame, which pushes a single set of permeable panels into the conveyor belt at a time; a feed clamp is installed inside the turning feeder frame for conveying the permeable panels to the corresponding reciprocating frame base frame pressure frame.

[0017] The cutting machine cuts the bean products into pieces.

[0018] In a further technical solution, the feeding assembly includes a feeding frame with an opening at the top and multiple sets of breathable plates inside.

[0019] A front material plate is installed on the side of the feed frame facing the turning feeder. The distance from the front material plate to the bottom of the inner wall of the feed frame is greater than the thickness of a single set of venting plates but less than the thickness of two sets of venting plates.

[0020] The bottom of the feed frame is provided with a guide groove, and a vertical block is fixedly installed on the inner wall. The distance between the vertical block and the front material plate is adapted to the corresponding size of the vent plate.

[0021] The length of the guide groove is greater than the corresponding length of the single set of permeable plates; a conveying cylinder is installed at the end of the feed frame facing away from the turning feeder, and a pusher plate is installed at the output end of the conveying cylinder. The top of the pusher plate passes through the guide groove and extends out of the guide groove to a height not exceeding the thickness of the single set of permeable plates, for the purpose of dynamically squeezing the single set of permeable plates.

[0022] In a further technical solution, the steering and feeding rack includes a central plate, the height of which is lower than the top height of the conveyor belt; a guide groove 2 is provided on the central plate, and a push screw is installed at the bottom, a drive motor is installed at the end of the push screw, and a push plate 2 is installed on the push screw, the top of the push plate 2 passes through the guide groove 2 and moves along the guide groove 2; the length of the guide groove 2 is greater than the corresponding length of a single set of ventilated plates;

[0023] A lifting plate is also installed inside the central plate, and a lifting cylinder is installed at the bottom of the lifting plate. The output end of the lifting cylinder is connected to the lifting plate to lift the ventilation plate upward.

[0024] A feeding sliding plate is installed inside the rotating feeding frame at the top of the lifting plate. Feeding clamps are rotatably installed on both sides of the feeding sliding plate. A clamping cylinder is installed inside the feeding sliding plate. The output end of the clamping cylinder is connected to the upper part of the feeding clamp and is used to drive the feeding clamp to rotate on the feeding sliding plate.

[0025] In a further technical solution, position slots are opened on both sides of the feeding sliding plate, and rotating shafts are installed on both sides of the feeding clamping plate and rotate within the position slots; both sets of feeding clamping plates have sliding grooves on opposite sides, and the output end of the clamping cylinder is restricted within the sliding grooves. Initially, the angle between the feeding clamping plate and the clamping cylinder is an obtuse angle.

[0026] The feeding sliding plate is double-layered, with a sliding motor installed on the top. A traveling track is installed inside the steering feeding frame, and the feeding sliding plate is constrained on the traveling track. The traveling track includes a rack plate, and a traveling gear is installed at the output end of the sliding motor. The traveling gear meshes with the rack plate.

[0027] In a further technical solution, the pressing frame includes a pressing frame body, which has an accommodating cavity that is open at the top and bottom and has strip-shaped holes on the sides; a protective plate is arranged around the sides of the pressing frame body.

[0028] The reciprocating frame base has four sets of conveyor rollers, each shorter than the corresponding side of the frame. These four sets are connected end-to-end for reciprocating conveying of the pressing frame. Each set of conveyor rollers is connected by a synchronization structure for synchronous rotation. The synchronization structure can use a synchronous belt or pulley for drive. Each set of conveyor rollers can contain multiple sets of rollers, all coaxially connected to synchronous pulleys for transmission. A drive motor synchronously rotates each set of conveyor rollers.

[0029] Each set of conveyor rollers is equipped with a drive motor, which drives the conveyor rollers to rotate; the output of the four drive motors drives the conveyor rollers to rotate at the same speed.

[0030] In a further technical solution, the pressing assembly includes at least two sets of pressing cylinders, and a pressing plate is installed at the output end of the pressing cylinder. The size of the pressing plate is adapted to the size of the accommodating cavity.

[0031] The upper frame is equipped with a tail track. The conveying assembly includes a tail slide plate and a linear slider. The bottom of the tail slide plate slides on the tail track via the linear slider. A conveying cylinder is installed on the tail slide plate. The output end of the conveying cylinder faces downward and is equipped with a synchronization plate. The synchronization plate is located at the bottom of the tail track. Two sets of pull plates are installed at the bottom of the synchronization plate. The distance between the two sets of pull plates is greater than the corresponding size of the pressure frame body and less than the outer diameter of the protective plate.

[0032] A guide rod is also installed between the tail slide and the synchronization plate.

[0033] In a further technical solution, a tailings port is installed at the bottom of the reciprocating frame base, and the size of the tailings port is larger than the size of the receiving cavity;

[0034] The reciprocating frame includes a discharge area, with short shaft rollers installed at both ends of the discharge area. A frame selection plate is installed between the two sets of short shaft rollers, and the height of the frame selection plate is lower than the top height of the short shaft rollers.

[0035] A lifting cylinder is installed at the bottom of the selection plate, and the output end of the lifting cylinder extends upward from the bottom of the pressure frame.

[0036] In a further technical solution, the injection rack is connected to the upper frame, and an injection track is provided on the injection rack. An injection slide plate and a linear slider are installed on the injection track. The injection slide plate slides on the injection track through the linear slider. An injection cavity is provided inside the injection head, and the injection cavity is connected to the injection tank.

[0037] A valve plate is installed outside the injection chamber. The valve plate is equipped with a lateral rotating shaft and is rotatably connected to the injection head. An opening motor is installed coaxially on the lateral rotating shaft.

[0038] A plug holder is installed on the valve plate, and multiple sets of discharge holes are provided at the bottom of the injection chamber; the number of plug holders is consistent with the number of discharge holes.

[0039] A cavity is provided inside the plug frame, and the cavity is connected to the outside of the plug frame; an elastic air bag is installed inside the cavity; the air supply end of multiple sets of elastic air bags is provided with an air supply pipe and installed inside the valve plate; the air supply pipe is connected to the external air circuit, and is used to inflate the valve plate when the plug frame is inserted into the discharge hole.

[0040] The forming method of the automated production line for dried bean curd includes the following steps:

[0041] Step 1, Adding coagulant: Add coagulant to the tofu raw material in the coagulant container according to the recipe to form the tofu.

[0042] Step 2, Pumping: After sampling and testing to ensure compliance with standards, pump the curdled tofu into the injection tank. Each pumping operation must meet at least the amount of material injected into the pressing frame in a single operation.

[0043] Step 3: Transport the pressure frame to the working position and let it stand still;

[0044] Step 4, Loading: Place multiple sets of permeable panels in the feed frame, start the permeable panel conveyor frame, and manually control the long conveyor frame to drop a single set of permeable panels onto the central plate through the operation panel; manually press the loading button once to push the motor to drive the push plate two on the push screw to push the single set of permeable panels into the lifting plate.

[0045] The output end of the lifting cylinder is raised upwards, causing the single set of vent plates to rise upwards;

[0046] When the sensor reaches the lifting position, the two sets of clamping cylinders move to both sides, pushing the feeding clamping plate to rotate downwards and clamp it on both sides of the single set of venting plates.

[0047] Step 5, feeding plate: Manually press the feeding plate button on the operation panel, then the sliding motor drives the walking gear to move along the rack plate, conveying the air permeable plate to the pressing frame; then the clamping cylinder retracts in the opposite direction, causing the two sets of feeding clamps to release, and the air permeable plate falls to the bottom of the pressing frame;

[0048] Synchronously, a positioning cylinder is installed at the bottom of the working position, and a positioning plate is installed at the output end of the positioning cylinder. When the plate feeding button is pressed manually, the positioning cylinder first lifts the positioning plate, and then the vent plate is placed on the positioning plate.

[0049] Step 6, Laying the fabric: Manually arrange the fabric and lay it on the breathable board with the fabric facing upwards;

[0050] Step 7, Injection: Manually press the injection button to open the air supply pipe. The gas squeezed out of the curdled tofu in the injection tank is discharged from the air supply pipe. The door opening motor drives the valve plate to open, and the curdled tofu is injected into the wrapping cloth. After the single layer of injection is completed, the door opening motor rotates in the reverse direction, and the valve plate plug bracket is inserted into the discharge hole. Gas is introduced into the air supply pipe, and the elastic air bag inflates.

[0051] The fabric is folded manually so that the single layer of injection material is wrapped inside the fabric;

[0052] Step 8: Repeat steps 5-7, with the height of the positioning plate decreasing each time; after completing multi-layer injection, the positioning cylinder drives the positioning plate to reset.

[0053] Step 9: After the filling is completed, the pressing frame enters the bottom of the pressing assembly. The pressing cylinder drives the pressing plate to press down in the accommodating cavity, pressing down the multi-layer cloth-wrapped curdled tofu and the breathable plate; the pressing process time is fixed, and the curdled tofu is formed into dried tofu.

[0054] Step 10: After pressing, the pressing frame is transported to the bottom of the tail track, and the protective plate is inserted into the pull plate.

[0055] The lifting cylinder moves upward to contact the vent plate at the bottom, and simultaneously, the transport cylinder moves horizontally to transport the pressing frame to the unloading area; the output end of the transport cylinder is raised, the pull plate contacts the protective plate and moves upward, pulling the pressing frame body upward; the pressing frame body is detached from the multi-layer tofu.

[0056] Step 11: Manually remove the multi-layered dried bean curd and feed it into a cutting machine to cut it into standard-sized dried bean curd; complete the automatic processing of dried bean curd forming.

[0057] The present invention has the following beneficial effects:

[0058] This invention achieves stable feeding of permeable plates within the pressing frame by installing a permeable plate conveyor frame; multiple layers of permeable plates are arranged and stacked within the feeding assembly, and pushed onto the conveyor belt by a conveyor cylinder; single-set feeding of permeable plates is achieved by limiting the height of the front material plate and the push plate; the invention uses a push screw to achieve the steering and pushing of the permeable plates, a lifting cylinder to lift the permeable plates, two sets of feeding clamps to clamp the permeable plates under the control of a clamping cylinder, and a sliding motor to achieve walking feeding, automatically moving the permeable plates to the receiving cavity of the pressing frame, and then lowering the permeable plates into the pressing frame, thus realizing the automatic feeding action of the permeable plates.

[0059] This invention features a conveyor roller assembly to drive and steer the pressing frame, a tail-end transport component to lift the pressing frame, and a pre-lifting cylinder at the bottom to press it upwards, achieving separation of the multi-layered dried bean curd from the pressing frame and preventing blockages that would make it difficult to detach from the pressing frame.

[0060] The present invention sets up a plug holder that is inserted into the discharge hole and inflates the elastic air bag by inflation, thereby achieving a blocking effect and reducing the dripping of raw materials from the valve pipeline when it is closed. Attached Figure Description

[0061] Figure 1 This is a schematic diagram of the automated bean curd forming production line proposed in this invention;

[0062] Figure 2 This is a schematic diagram of the reciprocating frame base, injection frame, upper frame and ventilated plate conveying assembly proposed in this invention;

[0063] Figure 3 This is a schematic diagram of the structure of the breathable plate conveying assembly proposed in this invention. Figure 1 ;

[0064] Figure 4 This is a schematic diagram of the structure of the breathable plate conveying assembly proposed in this invention. Figure 2 ;

[0065] Figure 5 This is a front view schematic diagram of the breathable plate conveying assembly proposed in this invention;

[0066] Figure 6 for Figure 5 Enlarged view of part A;

[0067] Figure 7 This is a vertical sectional view of the clamping cylinder connected to the feeding clamping plate of the present invention;

[0068] Figure 8 for Figure 5 BB cross-section;

[0069] Figure 9 This is a structural diagram of the reciprocating frame base, the injection frame, and the upper frame;

[0070] Figure 10 This is a top view of the reciprocating frame base of the present invention;

[0071] Figure 11 for Figure 10 Enlarged view of part C;

[0072] Figure 12 for Figure 10 Enlarged view of part D;

[0073] Figure 13 This is a vertical sectional view of the pressure frame of the present invention;

[0074] Figure 14 for Figure 2 Side view;

[0075] Figure 15 This is a vertical sectional view of the injection head;

[0076] Figure 16 for Figure 15 Enlarged view of part E;

[0077] Figure 17 This is a schematic diagram of the plug holder of the present invention.

[0078] Figure label:

[0079] 1. Tofu curdling pot;

[0080] 2. Injection rack; 21. Injection tank; 22. Injection head; 23. Telescopic pipe; 24. Injection track; 25. Injection slide plate; 26. Injection chamber; 27. Valve plate; 28. Door opening motor; 29. ​​Plug frame; 210. Discharge hole; 211. Elastic air bag; 212. Air supply pipe;

[0081] 3. Reciprocating frame base; 31. Conveying roller group one; 32. Drive motor; 33. Tail outlet; 34. Short shaft roller; 35. Frame sorting plate; 36. Lifting cylinder;

[0082] 4. Pressure frame; 41. Pressure frame body; 42. Strip hole; 43. Protective plate;

[0083] 5. Upper frame; 51. Pressure cylinder; 52. Tail rail; 53. Tail slide plate; 54. Transfer cylinder; 55. Synchronizing plate; 56. Pull plate; 57. Guide rod;

[0084] 6. Ventilation plate conveyor frame; 61. Long strip conveyor frame; 62. Turning and feeding frame; 63. Conveyor belt; 64. Ventilation plate; 65. Feeding assembly; 621. Feeding clamp; 651. Feeding frame; 652. Front feeding plate; 653. Guide groove one; 654. Vertical block; 655. Conveying cylinder one; 656. Pushing plate one; 622. Central plate; 623. Guide groove two; 624. Pushing screw; 625. Drive motor; 626. Pushing plate two; 627. Lifting plate; 628. Lifting cylinder; 629. Feeding sliding plate; 6210. Clamping cylinder; 6211. Slide chute; 6212. Sliding motor; 6213. Traveling track; 6214. Traveling gear;

[0085] 7. Material cutter;

[0086] 200, control panel; 300, positioning cylinder. Detailed Implementation

[0087] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0088] Example 1

[0089] like Figure 1-8 The diagram illustrates one embodiment of the present invention, specifically an automated production line for tofu forming. It includes: a tofu coagulation tank 1, used to coagulate and shape the raw materials; soybeans, after impurity removal and washing, are soaked for 8-12 hours in an automated soaking system to fully absorb water and soften them, preparing them for subsequent grinding. The soaked soybeans enter a grinding machine, where a centrifuge and other equipment separate the pulp from the residue, yielding fine raw soy milk. The soy milk is then boiled, rapidly heated to 100-105°C using steam to sterilize and remove the beany smell. It is then transported to the tofu coagulation tank for coagulation, where it reacts with a coagulant (such as gypsum or brine) at a specific temperature to coagulate into "tofu pudding." The coagulated tofu used in this application is made from this material. At this point, the coagulated tofu has a high water content. Traditionally, this is done by injecting the material into a frame for pressing and dehydration to form the raw material for tofu.

[0090] The filling rack 2 has a filling tank 21 mounted on top, and a filling head 22 is installed downwards at the bottom of the filling tank 21. A telescopic pipe 23 is installed between the filling tank 21 and the tofu curdling barrel 1. The filling rack and the tofu curdling barrel are connected to form a pump for curdling tofu, so a material pump is installed on the tofu curdling barrel. The filling tank can be moved and connected to the tofu curdling barrel through the telescopic pipe.

[0091] like Figure 2 As shown, the reciprocating frame-type base frame 3 has a conveyor roller group 31 installed inside, and the material pressing frame 4 is carried on the conveyor roller group 31; the material pressing frame 4 circulates on the reciprocating frame-type base frame 3.

[0092] The upper frame 5 is installed on the upper part of the reciprocating frame-type base frame 3 and includes a pressing assembly and a conveying assembly. The conveying assembly is located at the end of the reciprocating frame-type base frame 3 away from the injection frame 2.

[0093] like Figure 2 Below, the permeable panel conveyor frame 6 includes a long conveyor frame 61 and a turning feeder frame 62; a conveyor belt 63 is installed inside the long conveyor frame 61 for transporting permeable panels 64; a feeding component 65 is installed at the head of the long conveyor frame 61, on which multiple layers of permeable panels are placed manually, and the feeding component 65 pushes a single set of permeable panels 64 into the conveyor belt 63 at a time; a feeding clamp 621 is installed inside the turning feeder frame 62 for conveying the permeable panels 64 to the corresponding reciprocating frame base 3 and the pressing frame 4;

[0094] The cutting machine 7 cuts the bean products into pieces. The cutting machine of this invention is not described in detail; it can conform to existing structures, for example... Figure 1 This cutting machine has two sets of cutting methods, one horizontal and one vertical, to cut larger square-sized dried bean curd into smaller square-sized dried bean curd, and of course, it can also cut it into other shapes.

[0095] like Figure 3 As shown, the feeding assembly 65 includes a feeding frame 651, which has an opening at the top and is filled with multiple sets of breathable plates 64.

[0096] A front material plate 652 is installed on the side of the feed frame 651 facing the turning feed rack 62. The distance from the front material plate 652 to the bottom of the inner wall of the feed frame 651 is greater than the thickness of a single set of ventilated plates 64, but less than the thickness of two sets of ventilated plates 64.

[0097] The bottom of the feed frame 651 is provided with a guide groove 653, and a vertical block 654 is fixedly installed on the inner wall. The distance between the vertical block 654 and the front material plate 652 is adapted to the corresponding size of the vent plate 64, which is used to limit the length of the two sides of the vent plate; the vent plate is like Figure 2 As shown, the tofu has a series of ventilation holes arranged in a row, which are mainly used to squeeze out moisture. Wrapping the tofu with cloth prevents it from getting stuck in the ventilation holes.

[0098] The length of guide groove 653 is greater than the corresponding length of a single set of ventilated plates 64; for example Figure 3At the lower part, at the end of the feed frame 651 opposite to the turning feeder 62, a conveying cylinder 655 is installed. A pusher plate 656 is installed at the output end of the conveying cylinder 655. The top of the pusher plate 656 passes through the guide groove 653, and the height of the pusher plate 656 extending out of the guide groove 653 does not exceed the thickness of the single set of ventilated plates 64. It is used to flexibly compress the single set of ventilated plates 64. The conveying cylinder can be one of an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder. It is installed below the height of the guide groove and is connected to the pusher plate 655 at the lower part of the guide groove. It is used to drive the pusher plate 655 to move along the guide groove 655.

[0099] like Figure 3 and 4 As shown, the steering and feeding rack 62 includes a central plate 622, the height of which is lower than the top height of the conveyor belt 63; the central plate 622 has a guide groove 623, and a push screw 624 is installed at the bottom, as shown. Figure 8 As shown, a push motor 625 is installed at the end of the push screw 624, and a push plate 626 is installed on the push screw 624. The top of the push plate 626 passes through the guide groove 623 and moves along the guide groove 623. The length of the guide groove 623 is greater than the corresponding length of a single set of breathable plates 64. The output end of the push motor 625 is coaxially connected to the push screw, driving it to rotate. The push plate 626, which is threaded on the push screw, has two sets of insert plates that pass through the guide groove 623 and move upward to push a single set of breathable plates.

[0100] A lifting plate 627 is also installed inside the central plate 622. A lifting cylinder 628 is installed at the bottom of the lifting plate 627. The output end of the lifting cylinder 628 is connected to the lifting plate 627 and is used to lift the ventilator plate 64 upward.

[0101] like Figure 4-7 As shown, a feeding sliding plate 629 is installed inside the rotating feeding frame 62 at the top of the lifting plate 627. Feeding clamping plates 621 are rotatably installed on both sides of the feeding sliding plate 629. Hooks are provided at the bottom of the feeding clamping plates 621 to prevent material from slipping off the ventilated plate. A clamping cylinder 6210 is installed inside the feeding sliding plate 629. The output end of the clamping cylinder 6210 is connected to the upper part of the feeding clamping plate 621 to drive the feeding clamping plate 621 to rotate on the feeding sliding plate 629. The feeding sliding plate has two layers; the top layer is guided by a tenon and mortise structure, and a sliding motor drives a traveling gear to mesh with a rack plate to move the plate.

[0102] like Figure 7The image shows a vertical sectional view of the bottom of the feeding sliding plate. Position slots are provided on both sides of the feeding sliding plate 629. Rotating shafts are installed on both sides of the feeding clamping plate 621 and rotate within the position slots. Slide grooves 6211 are provided on the opposite side of both sets of feeding clamping plates 621. The output end of the clamping cylinder 6210 is confined within the slide groove 6211. Initially, the angle between the feeding clamping plate 621 and the clamping cylinder 6210 is an obtuse angle to prevent the occurrence of a rotation dead point, which would cause the direction of rotation to remain unchanged.

[0103] The feeding sliding plate 629 is double-layered, and a sliding motor 6212 is installed on the top. A traveling track 6213 is installed inside the turning feeding frame 62, and the feeding sliding plate 629 is constrained on the traveling track 6213. The traveling track 6213 includes a rack plate, and a traveling gear 6214 is installed at the output end of the sliding motor 6212. The traveling gear 6214 meshes with the rack plate.

[0104] This invention achieves stable feeding of permeable plates within the pressing frame by installing a permeable plate conveyor frame; multiple layers of permeable plates are arranged and stacked within the feeding assembly, and pushed onto the conveyor belt by a conveyor cylinder; single-set feeding of permeable plates is achieved by limiting the height of the front material plate and the push plate; the invention uses a push screw to achieve the steering and pushing of the permeable plates, a lifting cylinder to lift the permeable plates, two sets of feeding clamps to clamp the permeable plates under the control of a clamping cylinder, and a sliding motor to achieve walking feeding, automatically moving the permeable plates to the receiving cavity of the pressing frame, and then lowering the permeable plates into the pressing frame, thus realizing the automatic feeding action of the permeable plates.

[0105] Example 2

[0106] like Figure 9-14 As shown, another embodiment of the present invention is presented. Based on embodiment 1, the pressing frame 4 includes a pressing frame body 41. The pressing frame body 41 has a receiving cavity that is open at both the top and bottom, and a strip-shaped hole 42 is opened laterally. A protective plate 43 is arranged around the side of the pressing frame body 41. The cross-sectional view is shown below. Figure 13 As shown, the strip-shaped pores facilitate water drainage.

[0107] like Figure 10 As shown, there are four sets of conveyor roller groups 31 in the reciprocating frame base 3, and the length of each set is less than the length of the corresponding side of the reciprocating frame base 3; the four sets of conveyor roller groups 31 are connected end to end for reciprocating and circulating conveying of the pressing frame 4; a synchronization structure is installed between each set of conveyor roller groups 31 for synchronous rotation.

[0108] Each set of conveyor rollers 31 is equipped with a drive motor 32, which drives the conveyor rollers 31 to rotate; the output of the four sets of drive motors 32 drives the conveyor rollers 31 to rotate at the same speed.

[0109] like Figure 9As shown, the pressing assembly includes at least two sets of pressing cylinders 51. A pressing plate is installed at the output end of the pressing cylinder 51, and the size of the pressing plate is adapted to the size of the receiving cavity. Figure 9 The display only shows two sets of pressing cylinders, without restrictions on layout or quantity.

[0110] like Figure 9 The right side and Figure 14 As shown, a tail track 52 is installed on the upper frame 5. The conveying assembly includes a tail slide plate 53 and a linear slider 1. The bottom of the tail slide plate 53 slides on the tail track 52 via the linear slider 1. A conveying cylinder 54 is installed on the tail slide plate 53. The output end of the conveying cylinder 54 faces downward and is equipped with a synchronization plate 55. The synchronization plate 55 is located at the bottom of the tail track 52. Two sets of pull plates 56 are installed at the bottom of the synchronization plate 55. The distance between the two sets of pull plates 56 is greater than the corresponding size of the pressure frame body 41 and less than the outer diameter of the protective plate 43.

[0111] A guide rod 57 is also installed between the tail slide plate 53 and the synchronization plate 55.

[0112] like Figure 10 As shown, a tailings port 33 is installed at the bottom of the reciprocating frame base 3, and the size of the tailings port 33 is larger than the size of the receiving cavity. The reciprocating frame base 3 includes a discharge area, and short shaft rollers 34 are installed at both ends of the discharge area. A frame selection plate 35 is installed between the two sets of short shaft rollers 34, and the height of the frame selection plate 35 is lower than the top height of the short shaft rollers 34. In order to ensure continuous transmission and make way for the lifting cylinder, the short shaft rollers squeeze the multi-layered permeable plate-cloth-tofu structure from the bottom up, so that it does not cause blockage or stagnation after squeezing with the strip hole of the pressing frame, which facilitates subsequent separation.

[0113] A lifting cylinder 36 is installed at the bottom of the frame selection plate 35, and the output end of the lifting cylinder 36 extends upward from the bottom of the pressure frame 4.

[0114] This invention features a conveyor roller assembly to drive and steer the pressing frame, a tail-end transport component to lift the pressing frame, and a pre-lifting cylinder at the bottom to press it upwards, achieving separation of the multi-layered dried bean curd from the pressing frame and preventing blockages that would make it difficult to detach from the pressing frame.

[0115] Example 3

[0116] like Figure 15-17 As shown, another embodiment of the present invention is presented. Based on embodiment 2, the injection rack 2 is connected to the upper frame 5. The injection rack 2 is provided with an injection track 24. An injection slide plate 25 and a linear slider 2 are installed on the injection track 24. The injection slide plate 25 slides on the injection track 24 via the linear slider 2. An injection cavity 26 is provided inside the injection head 22. The injection cavity 26 is connected to the injection tank 21.

[0117] A valve plate 27 is installed outside the injection chamber 26. The valve plate 27 is provided with a lateral rotating shaft and is rotatably connected to the injection head 22. An opening motor 28 is installed coaxially on the lateral rotating shaft.

[0118] A plug bracket 29 is installed on the valve plate 27, and multiple sets of discharge holes 210 are provided at the bottom of the injection chamber 26; the number of plug brackets 29 and discharge holes 210 are the same.

[0119] A cavity is provided inside the plug holder 29, and the cavity connects to the outside of the plug holder 29. An elastic air bag 211 is installed inside the cavity. The air supply ends of multiple sets of elastic air bags 211 are provided with an air supply pipe 212 and installed inside the valve plate 27. The air supply pipe 212 is connected to an external air passage and is used to inflate the elastic air bag when the plug holder 29 of the valve plate 27 is inserted into the discharge hole 210. The present invention sets the plug holder to expand the elastic air bag by inflating it when inserted into the discharge hole, thereby achieving a closing and blocking effect, thereby reducing the dripping of raw materials from the valve pipe when it is closed.

[0120] The forming method of the automated production line for dried bean curd includes the following steps:

[0121] Step 1, Coagulation: Coagulate the tofu raw material into the tofu coagulation container 1 according to the recipe.

[0122] Step 2, Pumping: After sampling and testing to ensure compliance with standards, the curdled tofu is pumped into the injection tank 21. Each pumping operation must meet the minimum injection volume required in the pressing frame 4.

[0123] Step 3: The pressing frame 4 is transported to the working position and left to stand still;

[0124] Step 4, Loading: Place multiple sets of permeable plates 64 into the feed frame 651, start the permeable plate conveyor frame 6, and manually control the long conveyor frame 61 to move once via the control panel 200 to drop a single set of permeable plates 64 onto the central plate 622; manually press the loading button once to drive the motor 625 to drive the push plate 626 on the push screw 624 to push the single set of permeable plates 64 onto the lifting plate 627;

[0125] The output end of the lifting cylinder 628 is lifted upward, causing the single set of vent plates 64 to move upward;

[0126] When the sensor reaches the lifting position, the two sets of clamping cylinders 6210 move to both sides, pushing the feeding clamp 621 to rotate downward and clamp on both sides of the single set of venting plate 64.

[0127] Step 5, feeding plate: The operator presses the feeding plate button on the operation panel 200, and then the sliding motor 6212 drives the walking gear 6214 to move along the rack plate, conveying the permeable plate 64 to the pressing frame 4; then the clamping cylinder 6210 retracts in the opposite direction, causing the two sets of feeding clamps 621 to release, and the permeable plate 64 falls to the bottom of the pressing frame 4;

[0128] Synchronously, a positioning cylinder 300 is installed at the bottom of the working position, and a positioning plate is installed at the output end of the positioning cylinder 300. When the manual press of the plate feeding button, the positioning cylinder 300 first lifts the positioning plate, and then the vent plate 64 is placed on the positioning plate.

[0129] Step 6, Laying the fabric: Manually arrange the fabric and lay it on the breathable board 64 with the fabric facing upwards;

[0130] Step 7, Injection: Manually press the injection button to open the air supply pipe. The gas squeezed from the curdled tofu in the injection tank 21 is discharged from the air supply pipe 212. The door opening motor 28 drives the valve plate 27 to open, and the curdled tofu is injected into the wrapping cloth. After the single layer of injection is completed, the door opening motor 28 rotates in the opposite direction, and the plug bracket 29 of the valve plate 27 is inserted into the discharge hole 210. Gas is introduced into the air supply pipe, and the elastic air bag 211 inflates.

[0131] The fabric is folded manually so that the single layer of injection material is wrapped inside the fabric;

[0132] Step 8, repeat steps 5-7, each time the positioning plate is raised in a decreasing trend; after the multi-layer injection is completed, the positioning cylinder 300 drives the positioning plate to reset; when using multi-layer injection, the number of layers is 8-15, and the thickness of each layer of injection is different, resulting in different thicknesses for pressing. The thickness can be interactively modified according to the operation panel.

[0133] Step 9: After the filling is completed, the pressing frame 4 enters the bottom of the pressing component. The pressing cylinder 51 drives the pressing plate to press into the accommodating cavity, pressing down the multi-layer cloth-wrapped curdled tofu and the breathable plate 64; the pressing process time is fixed, and the curdled tofu is formed into dried tofu.

[0134] Step 10: The pressed material frame 4 is transported to the bottom of the tail track 52, and the protective plate 43 is inserted into the pull plate 56.

[0135] The lifting cylinder 36 moves upward to abut against the vent plate 64 located at the bottom. Simultaneously, the transport cylinder 54 moves horizontally to transport the pressing frame 4 to the unloading area. The output end of the transport cylinder 54 is raised, and the pull plate 56 abuts against the protective plate 43 and moves upward, pulling the pressing frame body 41 upward. The pressing frame body 41 is separated from the multi-layer tofu.

[0136] Step 11: Manually remove the multi-layered dried bean curd and feed it into the cutting machine 7 to cut it into standard-sized dried bean curd; complete the automatic processing of dried bean curd forming.

[0137] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated production line for forming dried bean curd, characterized in that, include: Tofu curdling bucket (1), used to curdle raw materials into shape; The feeding rack (2) has a feeding tank (21) installed on the top, and a feeding head (22) is set at the bottom of the feeding tank (21) facing downwards; a telescopic pipe (23) is installed between the feeding tank (21) and the tofu curd barrel (1). The reciprocating frame base (3) has a conveyor roller assembly (31) installed inside, and the conveyor roller assembly (31) carries a pressing frame (4); the pressing frame (4) circulates on the reciprocating frame base (3); The upper frame (5) is installed on the upper part of the reciprocating frame base frame (3) and includes a pressing assembly and a conveying assembly. The conveying assembly is located at the end of the reciprocating frame base frame (3) away from the injection frame (2). The permeable panel conveyor frame (6) includes a long conveyor frame (61) and a turning feeder frame (62); a conveyor belt (63) is installed inside the long conveyor frame (61) for transporting permeable panels (64); a feeding component (65) is installed at the head of the long conveyor frame (61), and the feeding component (65) pushes a single set of permeable panels (64) into the conveyor belt (63) at a time; a feeding component is installed inside the turning feeder frame (62) to transport the permeable panels (64) to the corresponding pressing frame (4); The cutting machine (7) cuts the bean products into pieces.

2. The automatic bean curd forming production line according to claim 1, characterized in that, The feeding assembly (65) includes a feeding frame (651), which has an opening at the top and is used to fill multiple sets of breathable plates (64). A front material plate (652) is installed on the side of the feed frame (651) facing the turning feed rack (62). The distance from the front material plate (652) to the bottom of the inner wall of the feed frame (651) is greater than the thickness of a single set of ventilated plates (64) and less than the thickness of two sets of ventilated plates (64). The bottom of the feed frame (651) is provided with a guide groove (653), and a vertical block (654) is fixedly installed on the inner wall. The distance between the vertical block (654) and the front material plate (652) is adapted to the corresponding size of the vent plate (64). The length of the guide groove (653) is greater than the corresponding length of the single set of ventilated plates (64); a conveying cylinder (655) is installed at the end of the feed frame (651) facing away from the turning feeder (62), and a pusher plate (656) is installed at the output end of the conveying cylinder (655). The top of the pusher plate (656) passes through the guide groove (653), and the height of the extension of the guide groove (653) does not exceed the thickness of the single set of ventilated plates (64), which is used to dynamically squeeze the single set of ventilated plates (64).

3. The automatic bean curd forming production line according to claim 2, characterized in that, The steering and feeding rack (62) includes a central plate (622), the height of which is lower than the top height of the conveyor belt (63); a guide groove (623) is provided on the central plate (622), and a push screw (624) is installed at the bottom. A drive motor (625) is installed at the end of the push screw (624), and a push plate (626) is installed on the push screw (624). The top of the push plate (626) passes through the guide groove (623) and moves along the guide groove (623); the length of the guide groove (623) is greater than the corresponding length of a single set of breathable plates (64); A lifting plate (627) is also installed inside the central plate (622). A lifting cylinder (628) is installed at the bottom of the lifting plate (627). The output end of the lifting cylinder (628) is connected to the lifting plate (627) and is used to lift the ventilation plate (64) upward. The feeding assembly includes a feeding sliding plate (629), which is located on top of the lifting plate (627) and inside the turning feeding frame (62). Feeding clamps (621) are rotatably installed on both sides of the feeding sliding plate (629). A clamping cylinder (6210) is installed inside the feeding sliding plate (629). The output end of the clamping cylinder (6210) is connected to the upper part of the feeding clamp (621) and is used to drive the feeding clamp (621) to rotate on the feeding sliding plate (629) to convey the ventilated plate (64) to the pressure frame (4) on the corresponding reciprocating frame base (3).

4. The automatic bean curd forming production line according to claim 3, characterized in that, Position slots are provided on both sides of the feeding sliding plate (629), and rotating shafts are installed on both sides of the feeding clamping plate (621) and rotate in the position slots; both sets of feeding clamping plates (621) have sliding grooves (6211) on opposite sides, and the output end of the clamping cylinder (6210) is restricted in the sliding groove (6211). At the initial moment, the angle between the feeding clamping plate (621) and the clamping cylinder (6210) is an obtuse angle; The feeding sliding plate (629) is double-layered, and a sliding motor (6212) is installed on the top. A traveling track (6213) is installed inside the turning feeding frame (62), and the feeding sliding plate (629) is constrained on the traveling track (6213). The traveling track (6213) includes a rack plate, and a traveling gear (6214) is installed at the output end of the sliding motor (6212). The traveling gear (6214) meshes with the rack plate.

5. The automatic bean curd forming production line according to claim 4, characterized in that, The pressing frame (4) includes a pressing frame body (41), which has a cavity that is open from top to bottom and has a strip-shaped hole (42) on the side; a protective plate (43) is arranged around the side of the pressing frame body (41). There are four sets of conveyor roller groups (31) in the reciprocating frame base (3), and the length of each set is less than the length of the corresponding side of the reciprocating frame base (3); the four sets of conveyor roller groups (31) are connected end to end for reciprocating and circulating conveying of the pressing frame (4); a synchronization structure is installed between each set of conveyor roller groups (31) for synchronous rotation; Each set of conveyor roller group 1 (31) is equipped with a drive motor (32), which drives the conveyor roller group 1 (31) to rotate; the output of the four sets of drive motors (32) drives the conveyor roller group 1 (31) to rotate at the same speed.

6. The automatic bean curd forming production line according to claim 4, characterized in that, The pressing assembly includes at least two sets of pressing cylinders (51), and a pressing plate is installed at the output end of the pressing cylinder (51). The size of the pressing plate is adapted to the size of the accommodating cavity. The upper frame (5) is equipped with a tail track (52). The conveying assembly includes a tail slide plate (53) and a linear slider. The bottom of the tail slide plate (53) slides on the tail track (52) via the linear slider. A conveying cylinder (54) is installed on the tail slide plate (53). The output end of the conveying cylinder (54) faces downward and is equipped with a synchronization plate (55). The synchronization plate (55) is located at the bottom of the tail track (52). Two sets of pull plates (56) are installed at the bottom of the synchronization plate (55). The distance between the two sets of pull plates (56) is greater than the corresponding size of the pressure frame body (41) and smaller than the outer diameter of the protective plate (43). A guide rod (57) is also installed between the tail slide (53) and the synchronization plate (55).

7. The automatic bean curd forming production line according to claim 4, characterized in that, A tailings port (33) is installed at the bottom of the reciprocating frame base (3), and the size of the tailings port (33) is larger than the size of the receiving cavity; The reciprocating frame base (3) includes a discharge area, and short shaft rollers (34) are installed at both ends of the discharge area. A frame selection plate (35) is installed between the two sets of short shaft rollers (34), and the height of the frame selection plate (35) is lower than the top height of the short shaft rollers (34). A lifting cylinder (36) is installed at the bottom of the frame selection plate (35), and the output end of the lifting cylinder (36) extends upward from the bottom of the pressure frame (4).

8. The automatic bean curd forming production line according to claim 4, characterized in that, The injection rack (2) is connected to the upper frame (5). An injection track (24) is provided on the injection rack (2). An injection slide plate (25) and a linear slider are installed on the injection track (24). The injection slide plate (25) slides on the injection track (24) through the linear slider. An injection cavity (26) is provided inside the injection head (22). The injection cavity (26) is connected to the injection tank (21). A valve plate (27) is installed outside the injection chamber (26). The valve plate (27) is provided with a lateral rotating shaft and is rotatably connected to the injection head (22). An opening motor (28) is installed coaxially on the lateral rotating shaft. A plug bracket (29) is installed on the valve plate (27), and multiple sets of discharge holes (210) are provided at the bottom of the injection chamber (26); the number of plug brackets (29) and discharge holes (210) are the same. A cavity is provided inside the plug frame (29), and the cavity is connected to the outside of the plug frame (29); an elastic air bag (211) is installed inside the cavity; the air supply end of multiple sets of elastic air bags (211) is provided with an air supply pipe (212) and installed inside the valve plate (27); the air supply pipe (212) is connected to the external air circuit and is used to inflate the plug frame (29) of the valve plate (27) when it is inserted into the discharge hole (210).

9. A forming method for an automated production line for dried bean curd forming, characterized in that, The automated production line for forming dried bean curd based on any one of claims 1-8 further includes the following steps: Step 1, Adding coagulant: Add coagulant to the tofu raw material in the coagulant container (1) according to the recipe to form the tofu; Step 2, Pumping: After sampling and testing to ensure compliance with standards, the curdled tofu is pumped into the injection tank (21). Each pumping operation must meet the minimum injection volume in the pressing frame (4). Step 3: The pressing frame (4) is transported to the working position and left to stand. Step 4, Loading: Place multiple sets of permeable plates (64) in the feed frame (651), start the permeable plate conveyor frame (6), and manually control the long conveyor frame (61) to move once through the operation panel (200) to drop a single set of permeable plates (64) onto the central plate (622); manually press the loading button once to drive the motor (625) to drive the push plate two (626) on the push screw (624) to push the single set of permeable plates (64) onto the lifting plate (627); The output end of the lifting cylinder (628) is lifted upward, causing the single set of vent plates (64) to move upward; When the sensor reaches the lifting position, the two sets of clamping cylinders (6210) move to both sides, pushing the feeding clamp (621) to rotate downward and clamp on both sides of the single set of ventilated plates (64); Step 5, feeding plate: The operator presses the feeding plate button on the operation panel (200), and then the sliding motor (6212) drives the walking gear (6214) to move along the rack plate to feed the permeable plate (64) to the pressing frame (4); then the clamping cylinder (6210) retracts in the opposite direction, so that the two sets of feeding clamps (621) are released and the permeable plate (64) falls to the bottom of the pressing frame (4); Synchronously, a positioning cylinder (300) is installed at the bottom of the working position, and a positioning plate is installed at the output end of the positioning cylinder (300). When the manual press of the feeding button, the positioning cylinder (300) first lifts the positioning plate, and then the vent plate (64) is placed on the positioning plate. Step 6, Laying the fabric: Manually arrange the fabric and lay it on the breathable board (64), with the fabric facing upwards; Step 7, Injection: Manually press the injection button to open the air supply pipe. The gas squeezed from the curdled tofu in the injection tank (21) is discharged from the air supply pipe (212). The door opening motor (28) drives the valve plate (27) to open, and the curdled tofu is injected into the cloth. After the single layer of injection is completed, the door opening motor (28) rotates in the opposite direction, and the valve plate (27) plug bracket (29) is inserted into the discharge hole (210). Gas is introduced into the air supply pipe, and the elastic air bag (211) inflates. The fabric is folded manually so that the single layer of injection material is wrapped inside the fabric; Step 8, repeat steps 5-7, each time the positioning plate is raised in a decreasing trend; after the multi-layer injection is completed, the positioning cylinder (300) drives the positioning plate to reset; Step 9: After the filling is completed, the pressing frame (4) enters the bottom of the pressing assembly. The pressing cylinder (51) drives the pressing plate to press into the accommodating cavity, pressing down the multi-layer cloth-wrapped curdled tofu and the breathable plate (64); the pressing is fixed for the process time, and the curdled tofu is formed into dried tofu. Step 10: The pressed material frame (4) is transported to the bottom of the tail track (52), and the protective plate (43) is inserted into the pull plate (56); The lifting cylinder (36) moves upward to abut against the vent plate (64) at the bottom and moves upward. Simultaneously, the transport cylinder (54) moves horizontally to transport the pressing frame (4) to the unloading area. The output end of the transport cylinder (54) is raised, and the pull plate (56) abuts against the protective plate (43) and moves upward, pulling the pressing frame body (41) upward. The pressing frame body (41) is separated from the multi-layer bean curd. Step 11: Manually remove the multi-layered dried bean curd and send it to the cutting machine (7) to cut it into standard-sized dried bean curd; complete the automatic processing of dried bean curd forming.

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