A production process for fermented soybean curd
By synchronously adjusting the cutting gap of the slitting blade assembly in the slitting machine, the problem of cumbersome tofu cutting operation is solved, realizing the convenience and shape flexibility of tofu cutting, and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SICHUAN HAN BEAN CRAFTSMAN FOOD CO LTD
- Filing Date
- 2026-04-22
- Publication Date
- 2026-06-02
AI Technical Summary
In existing technologies, the blade spacing needs to be adjusted when cutting tofu to meet the requirements of different types of tofu and pudding, which makes the operation cumbersome.
The tofu is cut using a slitting blade assembly from a slitting machine. By synchronously adjusting the cutting gap, the blade spacing is synchronously adjusted using a servo motor for oblique cutting adjustment and a multi-head screw assembly. Combined with a limit rod and slide rail structure, the tofu is cut.
It achieves convenience in tofu cutting and flexibility in cutting shapes, enabling the cutting of tofu blocks at the same or angled angles, thereby improving production efficiency and product quality.
Smart Images
Figure CN122123469A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tofu processing technology, specifically to a production process for fermented tofu curd. Background Technology
[0002] Tofu, also known as soft tofu, is the most common soy product. Legend has it that it was invented by Liu An, the King of Huainan during the Han Dynasty. The main production process involves two steps: first, making soy milk from soybeans; and second, coagulation, where the soy milk solidifies into a gel containing a large amount of water—tofu—under the combined action of heat and a coagulant. Tofu is a staple ingredient in Chinese vegetarian cuisine. Initially, it was considered unpalatable by our ancestors, but through continuous improvement, it gradually gained popularity and was hailed as "plant-based meat." Tofu can be produced year-round, unaffected by seasonal limitations, thus providing a variety of dishes during the off-season for vegetable production. For example, the invention disclosed in application number CN201910466257.9 is a process for making fermented tofu, which includes the following steps: (1) Soaking soybeans: Select high-quality soybeans, select them for water selection and washing, and then soak the washed soybeans in clean water; (2) Grinding: Pour the soaked soybeans into an electric stone mill, add purified water and grind them into soy milk; (3) Boiling the soy milk: Filter the soybean residue from the ground soy milk with a filter cloth and pour it into a pot. Boil the soybeans in a pot to obtain cooked soy milk; (4) Add coagulant: slowly add the prepared acetic acid solution to the cooked soy milk to add coagulant, and stir the cooked soy milk slowly in one direction until soy curds are separated in the cooked soy milk, then stop stirring; (5) Coagulate and shape: after the soy curds have coagulated for 10-15 minutes, gently scoop them into a wooden tray or other container lined with a cloth, cover them, wrap the tofu curds with a cloth, cover them with a wooden board, and press for 10-20 minutes to obtain sour soy tofu. This process is simple and easy to operate, and the sour soy tofu produced has a good taste and is beneficial to health.
[0003] However, in the specific implementation of the above-mentioned technical solution, since the requirements for tofu and douhua are different when cutting tofu, the spacing of the blades needs to be adjusted to deal with the size of the tofu to be cut. The existing blade sets are fixed and independent, and each one needs to be adjusted separately, which is very cumbersome. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides a production process for fermented soybean curd, which solves the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a production process for fermented tofu pudding, the specific steps of which are as follows: (1) Raw material acceptance: Black beans, soybeans, and black sesame seeds are inspected according to food safety standards, and can only be put into storage after passing the inspection; (2) Soaking soybeans: Black beans and soybeans are mixed in a predetermined ratio and soaked for a predetermined time; (3) Washing: Soaked soybeans are washed clean with water; (4) Grinding: The cleaned soybeans are ground into a paste without grains, and black sesame seeds are ground into a paste and added to the soy milk in a predetermined ratio; (5) Centrifugation: The paste is separated using a centrifuge, and the separation is carried out according to the following conditions. (6) Boiling: Boil the centrifuged soy milk at a predetermined temperature. The boiled soy milk has a soy aroma and is used immediately after boiling. The boiled liquid is filtered through a vibrating screen and then set aside for use. (7) Adding defoaming agent to the boiled soy milk. Slowly and evenly add the fermented soy milk to the soy milk and continue to stir slowly until the soy milk coagulates into large soy milk flowers and the surface is like thick millet soup. (8) Nourishing the soy milk: Use your hands to stir the soy milk curds on the edge of the soy milk tank until the soy milk curds no longer stick to the edge of the tank and separate from the tank body. (9) Pressing: Place the mold frame in advance and cover it with a special cloth. Pour the tofu into the mold frame and arrange it evenly. Use a pressure device to press and shape it. The shaped product is elastic, does not collapse after being cut, has a complete shape, uniform thickness, and a smooth surface. (10) Cutting: After removing the cloth from the pressed tofu, put it into a slitting machine to cut it into the predetermined shape. (11) Packaging: Put the cut tofu into a box and cover it with film. Adjust the sealing temperature of the packaging machine, install a special roll film, and set the production date to the desired value. The date is printed using an inkjet printer; (12) Sterilization: Pasteurization is used, and the sterilization temperature and time are controlled according to the predetermined standards; (13) Cooling: After sterilization, the tofu enters the cooling system and is cooled with cold water at 2-22℃. Then, the tofu is neatly arranged in a white plastic frame and placed in a cold storage to cool until the core temperature of the product meets the predetermined standards; (14) Metal detection: Each bag of packaged tofu passes through a metal detector, which is equipped with three modules: iron, copper, and stainless steel. The detection sensitivity is iron. ,copper ,Stainless steel (15) Packaging and storage: Place the finished tofu into foam boxes, with 18 boxes in each box. After checking the production date, sealing, sensory information, foreign objects, etc., seal the boxes according to the customer's requirements and affix product labels. Store the sealed boxes in a fresh product warehouse with a temperature of 0-6℃. (16) Transportation: Use full cold chain transportation. Before loading, pre-cool the truck compartment to 0-10℃. During transportation, the temperature is controlled within the range of 0-10℃.
[0006] Preferably, the slitting machine includes a slitting machine processing table and a tofu conveyor belt. A conveyor belt seat is fixedly installed on the upper end of the slitting machine processing table, and the tofu conveyor belt is set on the conveyor belt seat. A control panel side box and a support side box are fixedly installed on the upper end of the slitting machine processing table and on both sides of the conveyor belt seat, respectively. Side box fixing angle irons are fixedly installed at the bottom of the control panel side box and the support side box.
[0007] Preferably, a cutting drive cylinder frame is fixedly installed between the control panel side box and the support side box. Limit sleeves are fixedly installed at the four corners of the cutting drive cylinder frame. Limit rods are slidably arranged inside the limit sleeves, and a cutting blade assembly is provided at the lower end of the limit rods.
[0008] Preferably, the slitting blade assembly includes: a blade assembly frame, a beveling adjustment servo motor, an adjustment fixing truss assembly, a drive blade rotation shaft, a drive blade, a rotation inclined slide rail, and a slide rail back plate. The slide rail back plate is rotatably mounted on the inner wall of the control panel side box and the support side box. A rotating inclined slide rail is provided on the inner side of the slide rail back plate. A drive blade rotating shaft is slidably mounted on the rotating inclined slide rail via a slide block. Two oblique cutting adjustment servo motors are provided on the drive blade rotating shaft and connected to the output shaft. A blade assembly frame is integrally provided on the side of the oblique cutting adjustment servo motor. An adjustment fixing truss assembly is integrally provided on the other side of the oblique cutting adjustment servo motor.
[0009] Preferably, a drive blade is fixedly mounted on the drive blade rotation shaft, and a plurality of single-section blades are arranged between two drive blades. Both the drive blade and the single-section blade are provided with blade connection slots. Synchronous shaft seats are integrally provided on the inner walls of both sides of the blade connection slots. The synchronous shaft seat bracket is rotatably mounted with a synchronous hole inner shaft. A synchronous rotating seat is provided on the synchronous rotating seat. A multi-start lead screw assembly is provided on the synchronous rotating seat.
[0010] Preferably, the upper end of the oblique cutting adjustment servo motor is provided with a cutting floating track, and the upper end of the cutting floating track is slidably provided with a limit rod connecting seat via a slide block.
[0011] Preferably, the adjustable fixed truss assembly includes: a first fixed truss plate, a second fixed truss plate, a truss plate sliding groove, and a knob connecting seat; The outer ends of the first fixed truss and the second fixed truss are connected to the oblique cutting adjustment servo motor. The inner end of the first fixed truss is provided with a truss sliding groove, and the second fixed truss is provided with a knob connecting seat located in the truss sliding groove.
[0012] Preferably, a limiting straight groove is provided on the inner side of the first fixed truss plate, a limiting sliding straight block is slidably arranged in the limiting straight groove, a locking bolt is provided in the middle of the limiting sliding straight block, and a locking knob is provided at the outer end of the knob connecting seat.
[0013] Preferably, a control panel is provided on the outer end of the control panel side box, and a cutting drive cylinder is fixedly installed on the upper end of the cutting drive cylinder frame. The output end of the cutting drive cylinder is connected to the lower end of the limit rod through four brackets.
[0014] Preferably, a feeding riser is fixedly installed on the upper part of the slitting machine processing table, a feeding chute is fixedly installed on the upper part of the feeding riser, an outward expansion support frame is provided at the lower part of the slitting machine processing table, and several processing table cabinets are provided at the lower part of the slitting machine processing table.
[0015] This invention provides a production process for fermented soybean curd. It has the following beneficial effects: This invention allows for synchronous and convenient adjustment of the cutting gap by adjusting the cutting blade assembly in the slitting machine. The tofu formed in step 9 is transported to the control panel side box and the support side box via a tofu conveyor belt. Then, the cutting drive cylinder is activated, and through the bracket, the limit rods at the four corners push the lower cutting blade assembly to cut the tofu. In this process, by rotating the locking knob, the first and second fixed trusses are released. Then, the multi-head screw assembly is rotated. Each hollow screw is connected end to end by a spline bushing structure, so that rotating one section of the screw causes all the screws to rotate together and be driven to extend and retract by the threads. All the screw pitches are the same, thus enabling synchronous adjustment of the spacing between all single-section blades between the drive blades. Then, the locking knob is rotated again to lock the limiting sliding block in the limiting groove. The process involves starting the slant-cutting adjustment servo motor to drive the outer end slide rail back plate to rotate based on a single point. This, along with the floating allowance of the splitting floating rail and the limit rod connecting seat that slides through the slide block, coordinates with the angle of rotation of the drive blade and the single-section blade by the slant-cutting adjustment servo motor. The slant-cutting adjustment servo motor drives the drive blade rotation shaft, and the synchronous rotating seat on the drive blade synchronously tilts the single-section blade at the same angle, thus achieving the same rotation angle as the rotating slant-cutting slide rail, thereby cutting out tofu blocks with an angled angle. Attached Figure Description
[0016] Figure 1 This is a schematic diagram illustrating the specific framework of the process steps of the present invention; Figure 2 This is a schematic diagram of the slitting machine in this invention; Figure 3 This is a schematic diagram of the slitting machine in this invention from another perspective; Figure 4 This is a schematic diagram of the slitting blade assembly in this invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A; Figure 6 This is a schematic diagram of the slitting blade assembly from another perspective in this invention; Figure 7 This is a schematic diagram of the adjustable fixed truss assembly in this invention; Figure 8 This is a schematic diagram of the structure for adjusting the fixed truss assembly from another perspective in this invention.
[0017] The components include: 1. Slitting machine processing table; 2. Control panel side box; 3. Support side box; 4. Slitting drive cylinder frame; 5. Limiting top rod; 6. Limiting sleeve; 7. Slitting blade assembly; 701. Blade assembly frame; 702. Bevel cutting adjustment servo motor; 703. Adjustment fixing truss assembly; 7031. First fixing truss; 7032. Second fixing truss; 7033. Truss sliding groove; 7034. Knob connecting seat; 7035. Restricting straight groove; 7036. Restricting sliding straight block; 7037. Locking bolt; 704. Drive blade rotation shaft; 705. Drive blade. 706. Single-section blade; 707. Rotating inclined slide rail; 708. Slide rail back plate; 709. Sliding floating track; 710. Limiting top rod connecting seat; 711. Locking knob; 712. Blade connecting hole slot; 713. Synchronous shaft seat; 714. Synchronous hole inner shaft; 715. Synchronous rotating seat; 716. Multi-start screw assembly; 8. Sliding drive cylinder; 9. Side box fixing angle iron; 10. Control panel; 11. Conveyor belt seat; 12. Tofu conveyor belt; 13. Processing table under cabinet; 14. Feeding riser; 15. Feeding chute; 16. Outward expansion support frame. Detailed Implementation
[0018] 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 skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] like Figures 1 to 8 As shown in the figure, this invention provides a production process for fermented soybean curd, the specific steps of which are as follows: (1) Raw material acceptance: Black beans, soybeans, and black sesame seeds are inspected according to food safety standards, and can only be put into storage after passing the inspection; (2) Soaking soybeans: Black beans and soybeans are mixed in a predetermined ratio and soaked for a predetermined time; (3) Washing: Soaked soybeans are washed clean with water; (4) Grinding: The cleaned soybeans are ground into a paste without grains, and black sesame seeds are ground into a paste and added to the soy milk in a predetermined ratio; (5) Centrifugation: The paste is separated using a centrifuge, and the amount of water added is controlled according to the concentration of the soy milk during separation; (6) Boiling: The centrifuged soy milk is boiled at a predetermined temperature, and the boiled soy milk has the characteristics of soybeans. The aroma is freshly cooked and used immediately. The cooked soy milk is filtered through a vibrating screen and then set aside for use. (7) Adding soy milk: Add the prepared defoaming agent to the cooked soy milk, slowly and evenly add the fermented soy milk water to the soy milk and continue to stir slowly until the soy milk coagulates into large soy milk flowers and the surface is like thick millet soup. (8) Nourishing soy milk: Use your hands to stir the soy milk on the edge of the soy milk tank until the soy milk does not stick to the edge of the tank and separates from the tank body. (9) Pressing: Place the mold frame in advance and cover it with a special cloth. Pour the tofu flower into the mold frame and arrange it evenly. Use a pressure device to press and shape it. The shaped product is elastic, does not collapse after being cut, has a complete shape, uniform thickness, and a smooth surface. (10) Cutting into blocks: After removing the cloth from the pressed tofu, put it into a cutting machine to cut it into the predetermined shape; The slitting machine includes a slitting machine processing table 1 and a tofu conveyor belt 12. A conveyor belt seat 11 is fixedly installed on the upper end of the slitting machine processing table 1. The tofu conveyor belt 12 is mounted on the conveyor belt seat 11. A control panel side box 2 and a support side box 3 are fixedly installed on the upper end of the slitting machine processing table 1 and on both sides of the conveyor belt seat 11, respectively. Side box fixing angle irons 9 are fixedly installed at the bottom ends of the control panel side box 2 and the support side box 3. A slitting drive cylinder frame 4 is fixedly installed between the control panel side box 2 and the support side box 3. Limiting sleeves 6 are fixedly installed at each of the four corners of the slitting drive cylinder frame 4. A limiting rod 5 is slidably installed inside the 6, and a slitting blade assembly 7 is installed at the lower end of the limiting rod 5; a control panel 10 is installed at the outer end of the control panel side box 2; a slitting drive cylinder 8 is fixedly installed at the upper end of the slitting drive cylinder frame 4, and the output end of the slitting drive cylinder 8 is connected to the lower end of the limiting rod 5 through four brackets respectively; a feeding elevation frame 14 is also fixedly installed at the upper end of the slitting machine processing table 1, and a feeding chute 15 is fixedly installed at the upper end of the feeding elevation frame 14; an outward expansion support frame 16 is installed at the lower end of the slitting machine processing table 1; and several processing table cabinets 13 are installed at the lower end of the slitting machine processing table 1.
[0020] In the above technical solution, the cutting gap is adjusted synchronously by the cutting blade group 7 in the slitting machine. The tofu formed in step 9 is transported to the control panel side box 2 and the support side box 3 by the tofu conveyor belt 12. Then, the cutting drive cylinder 8 is started and drives the limit rods 5 at the four corners through the bracket to push the lower cutting blade group 7 to cut the tofu.
[0021] The slitting blade assembly 7 includes: a blade assembly frame 701, a beveling adjustment servo motor 702, an adjustment fixing truss assembly 703, a drive blade rotation shaft 704, a drive blade 705, a rotating inclined slide rail 707, and a slide rail back plate 708. The slide rail back plate 708 is rotatably mounted on the inner wall of the control panel side box 2 and the support side box 3. A rotating inclined slide rail 707 is provided on the inner side of the slide rail back plate 708. The drive blade rotation shaft 704 is slidably mounted on the rotating inclined slide rail 707 via a slide block. Two beveling adjustment servo motors 702 are mounted on the drive blade rotation shaft 704 and connected to the output shaft. The blade assembly frame 701 is integrated into the side of each beveling adjustment servo motor 702, and the other side of each beveling adjustment servo motor 702 is integrated with the blade assembly frame 701. The system includes an adjustable fixed truss assembly 703. A drive blade 705 is fixedly mounted on the drive blade rotation shaft 704. Several single-section blades 706 are arranged between two drive blades 705. Both the drive blade 705 and the single-section blades 706 have blade connection slots 712. Synchronous shaft seats 713 are integrally provided on the inner walls of both sides of the blade connection slots 712. A synchronous inner shaft 714 is rotatably mounted on the synchronous shaft seat 713. A synchronous rotating seat 715 is provided on the synchronous rotating seat 715. A multi-start screw assembly 716 is provided on the synchronous rotating seat 715. A sliding floating track 709 is provided at the upper end of the oblique cutting adjustment servo motor 702. A limit rod connecting seat 710 is slidably provided at the upper end of the sliding floating track 709 through a sliding seat. Preferably, the adjustable fixed truss assembly 703 includes: a first fixed truss plate 7031, a second fixed truss plate 7032, a truss plate sliding groove 7033, and a knob connecting seat 7034; the outer ends of the first fixed truss plate 7031 and the second fixed truss plate 7032 are connected to the oblique cutting adjustment servo motor 702; the inner end of the first fixed truss plate 7031 is provided with a truss plate sliding groove 7033; the second fixed truss plate 7032 is provided with a knob connecting seat 7034 located within the truss plate sliding groove 7033; the inner side of the first fixed truss plate 7031 is provided with a limiting straight groove 7035; a limiting straight block 7036 is slidably disposed within the limiting straight groove 7035; a locking bolt 7037 is disposed in the middle of the limiting straight block 7036; and a locking knob 711 is disposed at the outer end of the knob connecting seat 7034. In the above technical solution, by rotating the locking knob 711, the first fixed truss 7031 and the second fixed truss 7032 are released. Then, the multi-head lead screw assembly 716 is rotated. Each hollow lead screw is connected end to end by a spline bushing structure, so that rotating one section of the lead screw causes all the lead screws to rotate together and be driven to extend and retract by the thread. All the lead screws have the same pitch, so that the spacing between all the single-section blades 706 between the drive blades 705 can be adjusted synchronously. Then, the locking knob 711 is rotated again to lock the limiting sliding block 7036 in the limiting straight groove 7035. Specifically, by activating the oblique cutting adjustment servo motor 702, the outer end slide rail back plate 708 is driven to rotate the rotating oblique slide rail 707 mounted on a single point. This, along with the floating allowance of the cutting floating rail 709 and the limit top rod connecting seat 710 that slides on it via a slide block, coordinates with the angle of rotation of the drive blade 705 and the single-section blade 706 by the oblique cutting adjustment servo motor 702. The oblique cutting adjustment servo motor 702 drives the drive blade rotation shaft 704, and through the synchronous rotating seat 715 on the drive blade 705, the single-section blade 706 tilts at the same angle, thus achieving the same rotation angle as the rotating oblique slide rail 707, thereby cutting out tofu blocks with an oblique angle. (11) Boxing and Packaging: The cut tofu pudding is packed into boxes and covered with film. The sealing temperature of the packaging machine is adjusted, a special roll film is installed, and the production date is set to the current date and printed using an inkjet printer; (12) Sterilization: Pasteurization is used, and the sterilization temperature and time are controlled according to the predetermined standards; (13) Cooling: The sterilized tofu pudding enters the cooling system and is cooled with cold water at 2-22℃. Then, the tofu pudding is neatly arranged in a white plastic frame and placed in a cold storage to cool until the core temperature of the product meets the predetermined standards; (14) Metal Detection: Each bag of packaged tofu pudding passes through a metal detector. The metal detector is equipped with three modules: iron, copper, and stainless steel. The detection sensitivity is iron. ,copper ,Stainless steel (15) Packaging and storage: Place the finished tofu into foam boxes, with 18 boxes in each box. After checking the production date, sealing, sensory information, foreign objects, etc., seal the boxes according to the customer's requirements and affix product labels. Store the sealed boxes in a fresh product warehouse with a temperature of 0-6℃. (16) Transportation: Use full cold chain transportation. Before loading, pre-cool the truck compartment to 0-10℃. During transportation, the temperature is controlled within the range of 0-10℃.
[0022] Working principle: The present invention allows for synchronous and convenient adjustment of the cutting gap by adjusting the cutting blade assembly 7 in the slitting machine. The tofu formed in step 9 is transported to the control panel side box 2 and the support side box 3 via the tofu conveyor belt 12. Then, the cutting drive cylinder 8 is activated through the bracket to drive the four corner limit rods 5 to push the lower cutting blade assembly 7 to cut the tofu. Specifically, by rotating the locking knob 711, the first fixed truss 7031 and the second fixed truss 7032 are released. Then, the multi-head lead screw assembly 716 is rotated. Each hollow lead screw is connected end to end by a spline bushing structure, so that rotating one section of the lead screw causes all the lead screws to rotate together and be driven to extend and retract by the threads. All the lead screws have the same pitch, so that the spacing between all the single-section blades 706 between the drive blades 705 can be adjusted synchronously. Then, the locking knob 711 is rotated again to lock the limiting sliding block 7036 in the limiting straight groove 7035. Specifically, by activating the oblique cutting adjustment servo motor 702, the outer end slide rail back plate 708 is driven to rotate the rotating oblique slide rail 707 mounted on a single point. This, along with the floating allowance of the cutting floating rail 709 and the limit top rod connecting seat 710 that slides on it via a slide block, coordinates with the angle of rotation of the drive blade 705 and the single-section blade 706 by the oblique cutting adjustment servo motor 702. The oblique cutting adjustment servo motor 702 drives the drive blade rotation shaft 704, and through the synchronous rotating seat 715 on the drive blade 705, the single-section blade 706 tilts at the same angle, thus achieving the same rotation angle as the rotating oblique slide rail 707, thereby cutting out tofu blocks with an oblique angle.
[0023] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.
Claims
1. A production process for fermented tofu pudding, characterized in that, The specific steps are as follows: (1) Raw material acceptance: Black beans, soybeans, and black sesame seeds are inspected according to food safety standards, and can only be put into storage after passing the inspection; (2) Soaking soybeans: Black beans and soybeans are mixed in a predetermined ratio and soaked for a predetermined time; (3) Washing: Soaked soybeans are washed clean with water; (4) Grinding: The cleaned soybeans are ground into a paste without grains, and black sesame seeds are ground into a paste and added to the soy milk in a predetermined ratio; (5) Centrifugation: The paste is separated using a centrifuge, and the separation is carried out according to the following conditions. (6) Boiling: Boil the centrifuged soy milk at a predetermined temperature. The boiled soy milk has a soy aroma and is used immediately after boiling. The boiled liquid is filtered through a vibrating screen and then set aside for use. (7) Adding defoaming agent to the boiled soy milk. Slowly and evenly add the fermented soy milk to the soy milk and continue to stir slowly until the soy milk coagulates into large soy milk flowers and the surface is like thick millet soup. (8) Nourishing the soy milk: Use your hands to stir the soy milk curds on the edge of the soy milk tank until the soy milk curds no longer stick to the edge of the tank and separate from the tank body. (9) Pressing: Place the mold frame in advance and cover it with a special cloth. Pour the tofu into the mold frame and arrange it evenly. Use a pressure device to press and shape it. The shaped product is elastic, does not collapse after being cut, has a complete shape, uniform thickness, and a smooth surface. (10) Cutting: After removing the cloth from the pressed tofu, put it into a slitting machine to cut it into the predetermined shape. (11) Packaging: Put the cut tofu into a box and cover it with film. Adjust the sealing temperature of the packaging machine, install a special roll film, and set the production date to the desired value. The date is printed using an inkjet printer; (12) Sterilization: Pasteurization is used, and the sterilization temperature and time are controlled according to the predetermined standards; (13) Cooling: After sterilization, the tofu enters the cooling system and is cooled with cold water at 2-22℃. Then, the tofu is neatly arranged in a white plastic frame and placed in a cold storage to cool until the core temperature of the product meets the predetermined standards; (14) Metal detection: Each bag of packaged tofu passes through a metal detector, which is equipped with three modules: iron, copper, and stainless steel. The detection sensitivity is iron. ,copper ,Stainless steel (15) Packaging and storage: Place the finished tofu into foam boxes, with 18 boxes in each box. After checking the production date, sealing, sensory information, foreign objects, etc., seal the boxes according to the customer's requirements and affix product labels. Store the sealed boxes in a fresh product warehouse with a temperature of 0-6℃. (16) Transportation: Use full cold chain transportation. Before loading, pre-cool the truck compartment to 0-10℃. During transportation, the temperature is controlled within the range of 0-10℃.
2. The production process of fermented tofu pudding according to claim 1, wherein the slitting machine includes a slitting machine processing table (1) and a tofu conveyor belt (12), characterized in that, The upper end of the slitting machine processing table (1) is fixedly installed with a conveyor belt seat (11), and the tofu conveyor belt (12) is set on the conveyor belt seat (11). The upper end of the slitting machine processing table (1) and the two sides of the conveyor belt seat (11) are respectively fixedly installed with a control panel side box (2) and a support side box (3). The bottom ends of the control panel side box (2) and the support side box (3) are fixedly installed with side box fixing angle irons (9).
3. The production process of sour bean curd according to claim 2, characterized in that, A cutting drive cylinder frame (4) is fixedly installed between the control panel side box (2) and the support side box (3). Limit sleeves (6) are fixedly installed at the four corners of the cutting drive cylinder frame (4). A limit rod (5) is slidably installed inside the limit sleeve (6). A cutting blade assembly (7) is provided at the lower end of the limit rod (5).
4. The production process of sour bean curd according to claim 3, characterized in that, The slitting blade assembly (7) includes: a blade assembly frame (701), a bevel cutting adjustment servo motor (702), an adjustment fixing truss assembly (703), a drive blade rotation shaft (704), a drive blade (705), a rotation inclined slide rail (707), and a slide rail back plate (708). The slide rail back plate (708) is rotatably mounted on the inner wall of the control panel side box (2) and the support side box (3). A rotating inclined slide rail (707) is provided on the inner side of the slide rail back plate (708). A drive blade rotating shaft (704) is slidably mounted on the rotating inclined slide rail (707) through a slide block. Two oblique cutting adjustment servo motors (702) are provided on the drive blade rotating shaft (704) and connected to the output shaft. A blade group frame (701) is integrally provided on the side of the oblique cutting adjustment servo motor (702). An adjustment fixing truss group (703) is integrally provided on the other side of the oblique cutting adjustment servo motor (702).
5. The production process of sour bean curd according to claim 4, characterized in that, A drive blade (705) is fixedly mounted on the drive blade rotating shaft (704), and a plurality of single blades (706) are arranged between the two drive blades (705). Both the drive blade (705) and the single blade (706) are provided with blade connection slots (712). Synchronous shaft seats (713) are integrally provided on both sides of the inner walls of the blade connection slots (712). The synchronous shaft seat (713) is rotatably mounted on the synchronous hole inner shaft (714). The synchronous hole inner shaft (714) is provided with a synchronous rotating seat (715). The synchronous rotating seat (715) is provided with a multi-start lead screw assembly (716).
6. The production process of sour bean curd according to claim 5, characterized in that, The upper end of the oblique cutting adjustment servo motor (702) is provided with a cutting floating track (709), and the upper end of the cutting floating track (709) is provided with a limit rod connecting seat (710) through a sliding block.
7. The production process of sour bean curd according to claim 6, characterized in that, The adjustable fixed truss assembly (703) includes: a first fixed truss plate (7031), a second fixed truss plate (7032), a truss plate sliding groove (7033), and a knob connecting seat (7034). The outer ends of the first fixed truss (7031) and the second fixed truss (7032) are connected to the oblique cutting adjustment servo motor (702). The inner end of the first fixed truss (7031) is provided with a truss sliding groove (7033). The second fixed truss (7032) is provided with a knob connecting seat (7034) located in the truss sliding groove (7033).
8. The production process of sour bean curd according to claim 7, characterized in that, The first fixed truss plate (7031) has a limiting straight groove (7035) on its inner side. A limiting sliding straight block (7036) is slidably arranged in the limiting straight groove (7035). A locking bolt (7037) is arranged in the middle of the limiting sliding straight block (7036). A locking knob (711) is arranged at the outer end of the knob connecting seat (7034).
9. The production process of sour bean curd according to claim 8, characterized in that, The control panel side box (2) is provided with a control panel (10) at the outer end. The cutting drive cylinder (8) is fixedly installed on the upper end of the cutting drive cylinder frame (4). The output end of the cutting drive cylinder (8) is connected to the lower end of the limit rod (5) through four brackets respectively.
10. The production process of sour bean curd according to claim 9, characterized in that, The upper end of the slitting machine processing table (1) is also fixedly installed with a feeding riser (14), the upper end of the feeding riser (14) is fixedly installed with a feeding chute (15), the lower end of the slitting machine processing table (1) is provided with an outward expansion support frame (16), and the lower end of the slitting machine processing table (1) is provided with several processing table cabinets (13).