PLC controlled yogurt pie layering and filling forming equipment

Abstract

The application discloses a PLC-controlled yogurt cake layered filling forming equipment, and relates to the technical field of food processing. The PLC-controlled yogurt cake layered filling forming equipment is characterized by the following: through the automatic linkage design of the feeding push rod, the feeding frame one and the feeding frame two, and the accurate instruction control of the PLC controller, the automatic layered feeding of yogurt cake raw materials and fillings, the recovery of excess materials and the cleaning of the surface of the forming frame are realized. Compared with the traditional manual layered feeding mode, the feeding efficiency is improved. Through synchronous forming and stirring, the stirring of the forming-pressing table lifting linkage feeding assembly is further reduced, the production cycle of a single yogurt cake is further shortened, and continuous batch production can be realized.

Description

Technical Field

[0001] This invention relates to the field of food processing technology, specifically to a PLC-controlled yogurt cake layering and filling forming device. Background Technology

[0002] The PLC-controlled yogurt cake layered filling forming equipment is an automated food processing equipment that integrates programmable logic controller (PLC) technology. It is specifically designed to produce yogurt cake products with layered structure and filling function. The equipment precisely controls the entire production process through the PLC system, including raw material processing, layered forming, filling addition, pressure forming and other steps. Regarding the aforementioned technologies, it is believed that by adding yogurt and other auxiliary materials to food ingredients such as flour to create a powdered filling layer (which can be made into various colors and flavors), and then shaping it into layers, the yogurt pancake is completed. However, some manufacturers use molds for production, and the manual layering and adding of ingredients results in a relatively slow overall production speed, which is not conducive to the efficiency of large-scale production of yogurt pancakes.

[0003] Therefore, it is necessary to design a PLC-controlled yogurt cake layering and filling forming equipment that can achieve mass production and simultaneously complete functions such as layering, filling, and forming to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a PLC-controlled yogurt cake layering and filling forming device, which solves the problems mentioned in the background art.

[0005] To achieve this objective, the present invention adopts the following technical solution: A PLC-controlled yogurt cake layered filling forming device includes a working box and a processing table installed on the top of the working box. A protective frame is installed on the outer edge of the top of the processing table, and a vertical frame is provided on the outer wall of the protective frame. Feeding components are evenly installed on the outer side of the top wall of the vertical frame. The top of the upright frame is equipped with an extrusion push rod via a mounting bracket. The extrusion push rod is connected to an external PLC controller. The movable end of the extrusion push rod slides through the upright frame and is fixedly installed with a forming pressure table for batch pressing and forming of the injected cake blocks. The top of the work box and the processing table are both provided with mounting openings. A forming frame is fixedly installed on the inner wall of the mounting opening for batch receiving of yogurt cake raw materials and fillings. The forming groove inside the forming frame is movably equipped with an ejector frame, which is adjusted for batch layering and discharging of yogurt cakes. The working box is equipped with an adjustment component for controlling the multi-stage lifting adjustment of the ejector frame. The right side and rear of the protective frame are equipped with feeding push rods. The movable end of the feeding push rod on the right side slides through the protective frame and is fixedly installed with a feeding frame one for supplying powdered raw materials for yogurt cakes. The movable end of the feeding push rod on the right side slides through the protective frame and is fixedly installed with a feeding frame two for supplying powdered fillings for yogurt cakes.

[0006] Furthermore, the processing area is located in the middle of the top wall of the processing table, corresponding to the forming frame. The left side of the processing table is the discharge area, used to hold the formed yogurt cakes for easy handling by workers. The rear of the processing table, corresponding to the second feeding frame, is the filling placement area, used for adding fillings and accommodating the second feeding frame. The right side of the processing table, corresponding to the first feeding frame, is the raw material placement area, used for adding raw materials and accommodating the first feeding frame. The feeding pusher pushes the first feeding frame, which carries the raw materials, to cover the position of the forming frame under the influence of gravity. The raw material falls into the forming groove inside the forming frame. The movable end of the feeding push rod retracts, controlling the feeding frame one to return to the raw material placement area. During the movement, the feeding frame one will scrape off excess raw material to achieve the feeding process. The feeding push rod pushes the feeding frame two, which carries the raw material, to cover the position of the forming frame. Under the action of gravity, the filling falls into the forming groove inside the forming frame. The movable end of the feeding push rod retracts, controlling the feeding frame two to return to the filling placement area. During the movement, the feeding frame two will scrape off excess filling to achieve the layering process of feeding.

[0007] Furthermore, the adjustment assembly includes a support mechanism, a reset mechanism, and a control mechanism. The support mechanism includes a support frame fixedly installed inside the work box. The top wall of the support frame is fixedly connected to the control mechanism and the reset mechanism. Positioning grooves are provided at both the front and rear of the top wall of the support frame. Positioning shafts are provided on the inner walls of the positioning grooves. Positioning blocks that can move inside the positioning grooves are slidably installed on the outer walls of the positioning shafts. The top of the positioning blocks is fixedly connected to the bottom of the control mechanism.

[0008] Furthermore, the control mechanism includes a mounting base fixedly installed on the top right side of the support frame. An adjusting push rod is installed on the right side of the mounting base. The movable end of the adjusting push rod slides through the mounting base and is fixedly installed with an L-shaped seat. Positioning pins are fixedly installed on the outer side walls of the L-shaped seat. The outer ends of the positioning pins slide through the mounting base and extend to the outside. Adjusting frames are fixedly installed on the front and rear parts of the left end of the L-shaped seat. The bottom wall of the adjusting frame is fixedly connected to the top of the positioning block.

[0009] Furthermore, when the adjusting push rod pushes the L-shaped seat and the adjusting frame to move at the top of the support mechanism, it will cause the positioning block to move linearly along the outer wall of the positioning shaft inside the positioning groove to form a path limit.

[0010] Furthermore, a horizontal surface is provided on the top right side of the adjusting frame, and adjusting rollers are fixedly installed at the bottom of the ejector frame and at positions corresponding to the horizontal surface. The adjusting rollers are in rolling connection with the outer wall of the horizontal surface. After the adjusting rollers are on the horizontal surface, the ejector end of the ejector frame is made horizontal with the forming frame to eject the pressed yogurt cake from the forming groove inside the forming frame to realize the discharge process. Several downward inclined surfaces are evenly opened on the right side of the adjusting frame, and adjacent inclined surfaces are connected by a supporting plane.

[0011] Furthermore, after the adjusting roller rolls over the inclined surface and onto the corresponding support plane, it controls the ejector end on the ejector frame to fall from the forming groove of the forming frame to facilitate layered feeding. The closer the adjusting roller is to the L-shaped seat, the more the ejector end on the ejector frame falls from the forming groove of the forming frame to achieve the control of the layered filling of the yogurt cake. An infrared distance sensor is fixedly installed inside the working box to monitor the moving distance of the adjusting frame.

[0012] Furthermore, the reset mechanism includes a support platform fixedly installed on the outer wall of the support frame. Limiting rods are fixedly installed on both the support platform and the top wall of the work box. Limiting platforms are slidably provided on the outer walls of the limiting rods. The tops of the limiting platforms are fixedly connected to the bottom wall of the ejector frame. A reset spring is installed between the limiting platform and the corresponding support platform and sleeved outside the limiting rod. The reset spring is in a stretched state. The reset mechanism is used to coordinate with the control mechanism to realize the position adjustment of the ejector frame.

[0013] Furthermore, the feeding assembly includes a transmission mechanism and a mixing mechanism. The mixing mechanism includes a material cylinder installed on the top of the stand. The material cylinders correspond to the positions of the filling placement area and the raw material placement area, respectively. The material cylinder located at the rear is used to place the yogurt cake filling, and the material cylinder located on the right side is used to place the yogurt cake raw material. The bottom end of each material cylinder is equipped with a discharge pipe. The outer wall of each discharge pipe is provided with a control valve. The outer wall of the stand is provided with a receiving groove corresponding to the extension of the discharge pipe. A steering rod is rotatably installed inside each material cylinder. The top end of the steering rod is fixedly connected to the transmission mechanism. Several stirring rods are evenly installed on the outer wall of the steering rod.

[0014] Furthermore, the transmission mechanism includes a first bevel gear fixedly installed at the top of the steering rod, a drive shaft mounted on the top of the material cylinder via a bracket, a second bevel gear fixedly installed at one end of the drive shaft, the second bevel gear meshing with the first bevel gear, a transmission gear fixedly installed at the other end of the drive shaft, a guide post fixedly installed at the top of the forming press and in the direction corresponding to the transmission gear, a transmission rack that meshes with the transmission gear being slidably installed through the upright at the top of each guide post, a guide groove being provided on the outside of the transmission rack, a guide shaft being slidably installed on the inner wall of the guide groove, and the guide shaft being fixedly connected to the corresponding material cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This PLC-controlled yogurt cake layered filling forming equipment, through the automated linkage design of the feeding pusher, feeding frame one, and feeding frame two, combined with the precise command control of the PLC controller, realizes automated layered feeding of yogurt cake raw materials and fillings, recycling of excess materials, and cleaning of the forming frame surface. Compared with the traditional manual layered feeding method, the feeding efficiency is improved. At the same time, through the synchronous operation of forming and stirring, the lifting and linkage of the forming pressure table with the feeding component further reduces the process interval and shortens the production cycle of a single yogurt cake, enabling continuous batch production. The closed-loop feedback control of the infrared ranging sensor and the PLC controller can accurately adjust the descent distance of the ejector frame, thereby accurately controlling the laying thickness of the raw material layer and the filling layer. Meanwhile, the precise covering feeding of feeding frame one and feeding frame two, combined with the bottom sealing of the ejector end, ensures that the raw materials and fillings are evenly laid without leakage, thereby improving the product qualification rate of yogurt cakes and ensuring the consistency of specifications, taste, and layering effect of each product.

[0016] 2. This PLC-controlled yogurt pancake layering and filling forming equipment allows for flexible adjustment of the operating parameters of the push rod and extrusion push rod via the PLC controller, thereby adjusting the layer thickness and forming pressure of the yogurt pancake. It is suitable for producing yogurt pancakes of different thicknesses and filling ratios. At the same time, the rear and right-side material cylinders can independently stir the filling and yogurt pancake raw materials, and the types of fillings and raw materials can be flexibly changed to achieve the production of yogurt pancakes with multiple colors and flavors.

[0017] 3. The PLC-controlled yogurt pancake layered filling forming equipment ensures uniform pressure and no shaking of the forming frame during the forming process by precisely connecting the forming structure at the bottom of the forming pressure table with the forming groove of the forming frame, and by using the adjusting frame to achieve stable support through the adjusting rollers. This results in yogurt pancakes with regular shape, smooth edges, and no deformation or damage.

[0018] 4. This PLC-controlled yogurt cake layered filling forming equipment can simultaneously drive the stirring rod of the feeding component to rotate while the forming press is raised and lowered, realizing synchronous operation of material mixing and forming, shortening the interval between production processes and improving production continuity. At the same time, after the material in the barrel is mixed, it can automatically replenish the material to the feeding frame through the control valve and discharge pipe, further ensuring production continuity and improving batch production efficiency.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0022] Figure 1 This is a schematic diagram of the external structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the external structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the assembly of the processing table, protective frame, feeding frame one, and feeding frame two of the present invention; Figure 4 This is a diagram showing the assembly of the work box and processing table of the present invention; Figure 5 This is a schematic diagram of the assembly of the processing table, protective frame, upright frame and extrusion push rod of the present invention; Figure 6 This is a schematic diagram of the assembly of the working box, adjustment component, and forming frame of the present invention; Figure 7 This is a schematic diagram of the combination of the support mechanism, reset mechanism, control mechanism, ejector frame, and forming frame of the present invention; Figure 8 This is a schematic diagram of the combination of the support mechanism and the control mechanism of the present invention; Figure 9 This is a schematic diagram of the external structure of the control mechanism of the present invention; Figure 10 This is a schematic diagram of the combination of the reset mechanism, ejector, and forming frame of the present invention; Figure 11 This is a schematic diagram of the assembly of the support frame, extrusion pusher, and feeding component of the present invention; Figure 12 This is a schematic diagram of the mixing mechanism assembly of the present invention; Figure 13 This is a schematic diagram of the transmission mechanism assembly of the present invention; Figure 14 The internal structure of the mixing mechanism and transmission mechanism of this invention explodes. Figure 1 ; Figure 15 The internal structure of the mixing mechanism and transmission mechanism of this invention explodes. Figure 2 ; Figure 16 This is a cross-sectional view of the internal structure of the barrel of the present invention.

[0023] Illustrations: 1. Working box; 2. Stand; 3. Extrusion push rod; 4. Feeding assembly; 41. Transmission mechanism; 411. Guide column; 412. Bevel gear one; 413. Bevel gear two; 414. Transmission rack; 415. Guide groove; 416. Transmission gear; 417. Drive shaft; 418. Guide shaft; 42. Mixing mechanism; 421. Material cylinder; 422. Discharge pipe; 423. Control valve; 424. Steering rod; 425. Stirring rod; 426. Receiving tank; 5. Adjustment assembly; 51. Support mechanism; 511. Support frame; 512. Positioning groove; 513. Positioning shaft; 514. Positioning block; 52. Reset mechanism; 521. Support... 522. Support platform; 523. Limiting rod; 524. Limiting platform; 53. Return spring; 54. Adjustment mechanism; 55. Mounting base; 56. Adjusting push rod; 57. L-shaped seat; 58. Positioning pin; 59. Adjusting roller; 50. Adjusting frame; 51. Horizontal plane; 52. Inclined plane; 53. Supporting plane; 54. Infrared ranging sensor; 55. Processing table; 61. Discharge area; 62. Filling placement area; 63. Raw material placement area; 64. Processing area; 7. Protective frame; 8. Forming press; 9. Forming frame; 10. Ejection frame; 11. Feeding push rod; 12. Feeding frame two; 13. Mounting port; 14. Feeding frame one. Detailed Implementation

[0024] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0025] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0026] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Please see Figures 1-16 This invention provides a PLC-controlled yogurt cake layered filling forming device, including a working box 1 and a processing table 6 installed on the top of the working box 1. A protective frame 7 is installed on the outer edge of the top of the processing table 6, and a vertical frame 2 is provided on the outer wall of the protective frame 7. A feeding component 4 is evenly installed on the outer side of the top wall of the vertical frame 2. The top of the upright frame 2 is equipped with an extrusion push rod 3 via a mounting bracket. The extrusion push rod 3 is connected to an external PLC controller. The movable end of the extrusion push rod 3 slides through the upright frame 2 and is fixedly installed with a forming pressure table 8 for batch pressing and forming of the yogurt cake blocks after filling. The top of the work box 1 and the processing table 6 are both provided with mounting ports 13. A forming frame 9 is fixedly installed on the inner wall of the mounting port 13 for batch receiving of yogurt cake raw materials and fillings. The forming groove inside the forming frame 9 is movably installed with an ejector frame 10, which is adjusted for batch layering and discharging of yogurt cakes. The working box 1 is equipped with an adjustment component 5 for controlling the multi-stage lifting adjustment of the ejector frame 10. The right side and rear of the protective frame 7 are equipped with feeding push rods 11. The movable end of the feeding push rod 11 on the right side slides through the protective frame 7 and is fixedly installed with a feeding frame 14 for supplying powdered raw materials for yogurt cakes. The movable end of the feeding push rod 11 on the right side slides through the protective frame 7 and is fixedly installed with a feeding frame 2 12 for supplying powdered fillings for yogurt cakes.

[0028] In this implementation plan, the work box 1 serves as the core mounting base, providing stable support for components such as the processing table 6 and the adjustment component 5. The protective frame 7 not only prevents the spillage of powdered raw materials and fillings during the feeding and molding process, but also protects the operators and avoids contact with moving parts that could cause safety hazards. The upright frame 2 firmly supports the extrusion push rod 3 and the feeding component 4, ensuring the stability of extrusion molding and material feeding. The extrusion push rod 3 can precisely control the lifting speed, stroke and pressure of the forming press 8, adapting to the batch molding needs of yogurt cakes of different thicknesses and textures. The forming groove of the forming frame 9 adopts an array design, which, together with the batch ejection function of the ejection frame 10, greatly improves the molding and discharge efficiency. Feeding box 14 and feeding box 2 are each independently responsible for supplying raw materials and fillings to avoid mixing of materials and provide structural protection for layered fillings.

[0029] Specifically, the processing area 64 is located in the middle of the top wall of the processing table 6, corresponding to the forming frame 9. The left side of the processing table 6 is the discharge area 61, which is used to hold the formed yogurt cakes for easy handling by staff. The rear of the processing table 6, corresponding to the second feeding frame 12, is the filling placement area 62, used for adding fillings and accommodating the second feeding frame 12. The right side of the processing table 6, corresponding to the first feeding frame 14, is the raw material placement area 63, used for adding raw materials and accommodating the first feeding frame 14. The feeding push rod 11 pushes the first feeding frame 14, which carries the raw materials, to cover the position of the forming frame 9. Under the action of gravity, the raw materials... The filling falls into the forming groove inside the forming frame 9. The movable end of the feeding push rod 11 retracts to control the feeding frame 14 to return to the raw material placement area 63. During the movement, the feeding frame 14 will scrape the excess raw material to achieve the feeding process. The feeding push rod 11 pushes the feeding frame 2 12, which carries the raw material, to cover the position of the forming frame 9. Under the action of gravity, the filling falls into the forming groove inside the forming frame 9. The movable end of the feeding push rod 11 retracts to control the feeding frame 2 12 to return to the filling placement area 62. During the movement, the feeding frame 2 12 will scrape the excess filling to achieve the layering process of feeding.

[0030] In this implementation plan, the partitioned design of the processing table 6 (processing area 64, unloading area 61, filling placement area 62, raw material placement area 63) realizes the orderly separation of material storage, processing, and unloading, avoiding mutual interference between different processes and different materials and improving production standardization. The movement trajectories of feeding frame 14 and feeding frame 2 12 are precisely aligned with the processing table 6 zones. The extension and retraction stroke of the feeding push rod 11 is precisely controlled by the PLC controller to ensure that the feeding frame can accurately cover the forming frame 9 and ensure the uniform falling of raw materials and fillings. During the reset process, the bottom edges of feeding frame 14 and feeding frame 2 12 simultaneously scrape off excess material on the surface of forming frame 9, which reduces raw material waste and ensures uniform layer thickness. This avoids problems such as uneven thickness and material residue caused by traditional manual scraping. The automated extension and retraction of feeding push rod 11 replaces manual pushing, greatly improving feeding efficiency and providing a guarantee for batch layered filling forming.

[0031] Specifically, the adjustment component 5 includes a support mechanism 51, a reset mechanism 52, and a control mechanism 53. The support mechanism 51 includes a support frame 511 fixedly installed inside the work box 1. The top wall of the support frame 511 is fixedly connected to the control mechanism 53 and the reset mechanism 52. The front and rear parts of the top wall of the support frame 511 are provided with positioning grooves 512. The inner wall of the positioning grooves 512 is provided with positioning shafts 513. The outer wall of the positioning shafts 513 is slidably installed with positioning blocks 514 that can move inside the positioning grooves 512. The top of the positioning blocks 514 is fixedly connected to the bottom of the control mechanism 53.

[0032] In this embodiment, the support frame 511 is fixedly connected to the inside of the working box 1 to ensure the stability of the control mechanism 53 and the reset mechanism 52 during operation, and to avoid adjustment deviation due to unstable support. The cooperation between the positioning groove 512 and the positioning shaft 513 provides a precise sliding track for the positioning block 514, which in turn limits and guides the movement direction of the control mechanism 53 to prevent deviation or tilting during movement, and ensures the movement accuracy of the adjustment frame 536. This provides precise structural support for the multi-level lifting adjustment of the ejector frame 10, and indirectly ensures the uniformity of the yogurt cake layer thickness.

[0033] Specifically, the control mechanism 53 includes a mounting base 531 fixedly installed on the top right side of the support frame 511. An adjusting push rod 532 is installed on the right side of the mounting base 531. The movable end of the adjusting push rod 532 slides through the mounting base 531 and is fixedly installed with an L-shaped seat 533. Positioning pins 534 are fixedly installed on the outer side walls of the L-shaped seat 533. The outer ends of the positioning pins 534 slide through the mounting base 531 and extend to the outside. Adjusting frames 536 are fixedly installed on the front and rear parts of the left end of the L-shaped seat 533. The bottom wall of the adjusting frame 536 is fixedly connected to the top of the positioning block 514.

[0034] In this implementation scheme, the adjusting push rod 532 controls the extension stroke and speed, thereby driving the L-shaped seat 533 to achieve precise movement. The positioning pin 534 plays a limiting role in the movement of the L-shaped seat 533. Together with the positioning block 514 and the positioning shaft 513, it further prevents the L-shaped seat 533 from deviating when moving, ensuring that the adjusting frame 536 can move smoothly along the preset trajectory. Specifically, when the adjusting push rod 532 pushes the L-shaped seat 533 and the adjusting bracket 536 to move on top of the support mechanism 51, it will drive the positioning block 514 to move linearly along the outer wall of the positioning shaft 513 inside the positioning groove 512 to form a path limit.

[0035] In this implementation scheme, the adjusting push rod 532 serves as the power source for the control mechanism 53. Its extension and retraction are precisely controlled by the PLC controller. The extension and retraction stroke can be flexibly adjusted according to the layer thickness requirements of the yogurt cake. The power of the adjusting push rod 532 can be precisely transmitted to the adjusting frame 536 for synchronous movement, providing core technical support for automated layering.

[0036] Specifically, a horizontal surface 5361 is provided on the top right side of the adjusting frame 536, and adjusting rollers 535 are fixedly installed at the bottom of the ejector frame 10 and at the position corresponding to the horizontal surface 5361. The adjusting rollers 535 are in rolling connection with the outer wall of the horizontal surface 5361. After the adjusting rollers 535 are on the horizontal surface 5361, the ejection end of the ejector frame 10 is made horizontal with the forming frame 9 to eject the pressed yogurt cake from the forming groove inside the forming frame 9 to realize the discharge process. Several downward inclined surfaces 5362 are evenly opened on the right side of the adjusting frame 536, and two adjacent inclined surfaces 5362 are connected by a support plane 5363.

[0037] In this embodiment, the integrated design of the horizontal surface 5361, inclined surface 5362, and support plane 5363 on the adjusting frame 536 constitutes the guide structure for the multi-level lifting of the ejector frame 10. The rolling connection between the adjusting roller 535 and each plane converts sliding friction into rolling friction, reducing the friction during the adjustment process, making the lifting action of the ejector frame 10 smoother and more stable, and avoiding jamming. The horizontal plane 5361 ensures that the ejection frame 10 and the forming frame 9 are horizontally aligned when the finished product is ejected, ensuring that the yogurt cake can be ejected smoothly and avoiding deformation or damage during the ejection process; The cooperation of multiple inclined surfaces 5362 and support plane 5363 enables multi-level height adjustment of the ejector frame 10. Different support planes 5363 correspond to different ejector end descent heights, thereby enabling layered filling control of yogurt cakes of different thicknesses, adapting to the production needs of yogurt cakes of different specifications, and improving the versatility of the equipment.

[0038] Specifically, after the adjusting roller 535 rolls past the inclined surface 5362 and onto the corresponding support plane 5363, it controls the ejector end on the ejector frame 10 to fall from the forming groove of the forming frame 9 to facilitate layered feeding. The closer the adjusting roller 535 is to the L-shaped seat 533, the more the ejector end on the ejector frame 10 falls from the forming groove of the forming frame 9 to achieve the control of the layered filling of the yogurt cake. An infrared distance sensor 537 is fixedly installed inside the working box 1 to monitor the moving distance of the adjusting frame 536.

[0039] In this embodiment, the rolling process of the adjusting roller 535 along the inclined surface 5362 toward the supporting plane 5363 realizes the smooth descent of the ejector frame 10. The inclined surface 5362 plays a buffering and guiding role to avoid material impact and damage to the forming tank caused by the rapid descent of the ejector frame 10. The drop height of the ejector end corresponds precisely to the position of the support plane 5363 where the adjusting roller 535 is located. The closer the adjusting roller 535 is to the L-shaped seat 533, the more the ejector end drops and the larger the layer space. The thickness ratio of the filling layer and the raw material layer can be flexibly adjusted to meet the production needs of yogurt cakes of different flavors and specifications. The infrared ranging sensor 537 monitors the moving distance of the adjusting frame 536 in real time and feeds the signal back to the PLC controller to precisely control the stop position of the adjusting push rod 532 according to the preset parameters, so as to achieve precise positioning of the adjusting frame 536 and thus ensure the accurate falling height of the ejector end, avoid uneven layering caused by adjustment deviation, and improve adjustment accuracy and automation.

[0040] Specifically, the reset mechanism 52 includes a support platform 521 fixedly installed on the outer wall of the support frame 511. Limiting rods 522 are fixedly installed on both the support platform 521 and the inner top wall of the work box 1. Limiting platforms 523 are slidably provided on the outer walls of the limiting rods 522. The tops of the limiting platforms 523 are fixedly connected to the bottom wall of the ejector frame 10. A reset spring 524 is installed between the limiting platform 523 and the corresponding support platform 521 and sleeved on the outside of the limiting rods 522. The reset spring 524 is in a stretched state. The reset mechanism 52 is used to coordinate with the control mechanism 53 to realize the position adjustment of the ejector frame 10.

[0041] In this implementation scheme, the reset mechanism 52 and the control mechanism 53 work together to provide auxiliary power and limit protection for the lifting and adjusting of the ejector frame 10; The limiting rod 522 precisely limits the sliding direction of the limiting platform 523, ensuring that the limiting platform 523 can only move the ejector frame 10 up and down in the vertical direction, thus avoiding misalignment between the ejector end and the forming groove caused by the offset of the ejector frame 10. When the reset spring 524 is in a stretched state, its elastic tension can pull the limit platform 523 to slide downwards. Combined with the pushing action of the control mechanism 53, it can achieve a smooth descent of the ejector frame 10, avoid jamming of the ejector frame 10, and ensure smooth connection of ejection and descent actions, thus providing a guarantee for the continuous operation of layered feeding and finished product ejection.

[0042] Specifically, the feeding assembly 4 includes a transmission mechanism 41 and a mixing mechanism 42. The mixing mechanism 42 includes a material cylinder 421 installed on the top of the stand 2. The material cylinder 421 corresponds to the positions of the filling placement area 62 and the raw material placement area 63, respectively. The material cylinder 421 located at the rear is used to place the yogurt cake filling, and the material cylinder 421 located on the right side is used to place the yogurt cake raw material. The bottom end of each material cylinder 421 is equipped with a discharge pipe 422. The outer wall of each discharge pipe 422 is equipped with a control valve 423. The outer wall of the stand 2 is provided with a receiving groove 426 corresponding to the extension of the discharge pipe 422. A steering rod 424 is rotatably installed inside each material cylinder 421. The top end of the steering rod 424 is fixedly connected to the transmission mechanism 41. Several stirring rods 425 are evenly installed on the outer wall of the steering rod 424.

[0043] In this implementation plan, the position of the material cylinder 421 is precisely aligned with the filling placement area 62 and the raw material placement area 63, ensuring that the material discharged from the discharge pipe 422 can accurately fall into the second feeding frame 12 and the first feeding frame 14, thus avoiding material spillage. The rear and right-side material cylinders 421 independently store and mix the filling and raw materials, achieving material classification and processing to avoid mixing of different materials and ensure the flavor of the yogurt cake; The stirring rods 425 are evenly distributed on the outer wall of the steering rod 424 to fully stir the material in the material cylinder 421 in all directions, avoiding material clumping and uneven mixing, and ensuring the uniform texture of raw materials and fillings. The receiving tank 426 provides a receiving space for the discharge pipe 422 to avoid interference between the discharge pipe 422 and the upright frame 2 and the feeding frame, and ensures smooth movement of the feeding frame.

[0044] Specifically, the transmission mechanism 41 includes a first bevel gear 412 fixedly installed on the top of the steering rod 424, a drive shaft 417 mounted on the top of the material cylinder 421 via a bracket, a second bevel gear 413 fixedly installed on one end of the drive shaft 417, the second bevel gear 413 meshing with the first bevel gear 412, a transmission gear 416 fixedly installed on the other end of the drive shaft 417, a guide post 411 fixedly installed on the top of the forming press 8 in the direction corresponding to the transmission gear 416, a transmission rack 414 meshing with the transmission gear 416 is fixedly installed on the top of the guide post 411 through the upright 2, a guide groove 415 is provided on the outside of the transmission rack 414, a guide shaft 418 is slidably installed on the inner wall of the guide groove 415, and the guide shaft 418 is fixedly connected to the corresponding material cylinder 421.

[0045] In this embodiment, the transmission mechanism 41 realizes the synchronous linkage between the molding action and the mixing action. The guide column 411 is fixedly connected to the molding press table 8. When the molding press table 8 is raised or lowered, it can drive the guide column 411 to rise or fall synchronously, thereby driving the transmission rack 414 to move up and down. The cooperation between the guide groove 415 and the guide shaft 418 plays a limiting and guiding role in the movement of the transmission rack 414, ensuring that the transmission rack 414 and the transmission gear 416 are always precisely meshed, and avoiding transmission failure caused by tooth disengagement. The transmission rack 414 meshes with the transmission gear 416 to drive the drive shaft 417 to rotate, and then through the meshing of the second bevel gear 413 with the first bevel gear 412, it drives the steering rod 424 and the stirring rod 425 to rotate, thereby realizing the stirring of materials; When the forming press 8 descends for forming, the stirring rod 425 rotates in the forward direction to stir the material. When the forming press 8 rises to reset, the stirring rod 425 rotates in the reverse direction to stir the material, ensuring that the material is mixed evenly and realizing the "forming-stirring" process simultaneously to shorten the interval between production processes.

[0046] Working principle of this device: The electrical control equipment of this device, including the extrusion push rod 3, control valve 423, adjusting push rod 532, infrared ranging sensor 537, and feeding push rod 11, is electrically connected to an external power source through a standardized wiring layout, providing a stable and controllable power source for the entire process of the device. The models of the electrical control components can be flexibly selected from the existing standard parts system according to the actual working conditions. The signal input terminals of the above-mentioned electrical control components are all connected one-to-one with the signal output terminals of the PLC controller. The signal feedback terminal of the infrared ranging sensor 537 is connected to the signal input terminal of the PLC controller, which can realize the real-time transmission and precise execution of commands, providing core support for the automated control of the device. It provides the basis and principle for the signal output and input of the control logic of the electrical control equipment, and further addresses the problems of the background technology by forming targeted solutions through innovative structural design. The following is a detailed description of the specific working principle and technical effects: During the production of yogurt biscuits, the materials are fed in. The powdered filling and yogurt biscuit ingredients are put into the feeding frame 2 12 and the feeding frame 14 respectively, so that the filling and ingredients are stably located in the filling placement area 62 and the ingredient placement area 63 respectively to avoid mixing of materials. At the same time, the main and auxiliary materials for making the filling (such as yogurt powder, filling base powder, etc.) and the main and auxiliary materials for making the yogurt biscuit ingredients (such as flour, yogurt, sugar, etc.) are put into the corresponding material cylinders 421 respectively (clear division of labor: the main and auxiliary materials for making the filling are put into the material cylinder 421 located at the rear, and the main and auxiliary materials for making the yogurt biscuit ingredients are put into the material cylinder 421 located on the right). This realizes the classification, storage and separate supply of materials, laying the foundation for subsequent automated layered feeding, and then the automated production process of yogurt biscuits is started. The precise adjustment of the molding station is completed by adjusting component 5. The adjusting push rod 532 installed on the outer wall of the mounting base 531 is activated to push the L-shaped base 533 and drive the adjusting frame 536 to move synchronously. During the advancement of the L-shaped base 533, the positioning pin 534 penetrates the movement of the mounting base 531 to form a path limit, ensuring that the L-shaped base 533 moves along the preset horizontal trajectory to avoid deviation. At the same time, when the adjusting frame 536 is pushed, it will drive the positioning block 514 to move linearly along the outer wall of the positioning shaft 513 in the inner wall of the positioning groove 512, further limiting the movement path of the adjusting frame 536. The double limiting structure works together to effectively counteract the lateral force generated when the adjusting push rod 532 is pushed, ensuring that the movement accuracy error of the adjusting frame 536 is reduced, which provides a guarantee for subsequent layered feeding and molding quality. Meanwhile, the infrared ranging sensor 537 installed inside the work box 1 monitors the distance between itself and the adjusting frame 536 in real time, and feeds back the monitored distance signal to the PLC controller in real time. The PLC controller analyzes and processes the feedback signal according to the preset adjustment parameters (set in conjunction with the thickness requirements of the yogurt cake forming). When the adjusting frame 536 reaches the set distance, the PLC controller immediately sends a stop command to the adjusting push rod 532 to stop working, thereby achieving precise positioning of the adjusting frame 536. This automates and refines the adjustment process, eliminating the need for manual observation and adjustment, greatly improving debugging efficiency, and meeting the needs of multi-station synchronous debugging in large-scale production. During the movement of the adjusting frame 536, the position of the ejector frame 10 is adjusted synchronously to reserve precise space for layered feeding. When the adjusting frame 536 is pushed forward, the return spring 524 is in an elastic tension state. Under the action of the elastic force, the limiting platform 523 is pulled down along the outer wall of the limiting rod 522 at the top of the support platform 521 to limit the sliding direction of the limiting platform 523 and prevent the limiting platform 523 from deviating. Then the limiting platform 523 drives the ejector frame 10 to move downward from the mounting port 13, so that the ejector end on the ejector frame 10 descends synchronously from the forming groove in the forming frame 9, reserving feeding space for the forming groove on the forming frame 9 (the size of the space can be flexibly controlled by the adjustment distance of the adjusting frame 536 to adapt to the production of yogurt cakes of different thicknesses). During this process, the ejector frame 10 descends, which drives the adjusting roller 535 to move synchronously. The adjusting roller 535 will gradually roll down along the horizontal plane 5361 of the adjusting frame 536. When it passes the inclined plane 5362, it will smoothly transition under its guidance and finally move onto the support plane 5363. The support plane 5363 provides stable support for the adjusting roller 535, thereby determining the descending position of the ejector frame 10 and preventing the ejector frame 10 from shaking during the subsequent feeding process, thus ensuring the stability of the feeding process. After the forming groove of the forming rack 9 has reserved enough space for feeding, the device automatically enters the feeding stage. This stage completely solves the core defects of slow speed and uneven layering of traditional manual layer feeding, realizing the automated layer feeding of raw materials and fillings. The PLC controller sends a feeding command, starts the feeding push rod 11 to extend the movable end and push the feeding frame 14 from the raw material placement area 63 to the processing area 64 smoothly. The feeding frame 14 moves at a constant speed along the surface of the processing table 6 until the feeding frame 14 carrying the yogurt cake raw material completely covers the processing area 64 and the location of the forming rack 9. At this time, the yogurt cake ingredients inside the feeding frame 14 fall evenly into the reserved space of the forming groove of the forming frame 9 under the action of gravity. At the same time, the ejector end on the ejector frame 10 seals the bottom of the forming groove on the forming frame 9 in real time to prevent the ingredients from leaking from the bottom of the forming groove, ensuring accurate filling of ingredients. After the feeding is completed, the PLC controller sends a reset command, and the feeding push rod 11 drives the feeding frame 14 to reset in the opposite direction. Its inner wall will synchronously retract the excess yogurt cake ingredients inside. At the same time, the bottom inner wall edge of the feeding frame 14 will thoroughly scrape away the excess ingredients scattered on the surface of the forming frame 9 to avoid waste of ingredients, and at the same time ensure that the surface of the forming frame 9 is clean, laying the foundation for subsequent filling. After the raw materials are fed, the PLC controller controls the adjustment component 5 to repeat the above workflow. According to the preset control logic, the adjustment push rod 532 is pushed forward again, so that the ejector end on the ejector frame 10 descends again from the forming groove on the forming frame 9, leaving space for the filling (the thickness of the filling layer can be precisely controlled by adjusting the descent distance of the ejector frame 10, which can achieve precise adjustment of the layer thickness of different flavored yogurt cakes). Then, the PLC controller starts the feeding push rod 11 to push the feeding frame 2 12 and the yogurt cake filling it carries to move towards the processing area 64. The feeding frame 2 12 moves at a constant speed along the surface of the processing table 6 until it completely covers the processing area 64 and the location of the forming frame 9. Under the action of gravity, the filling falls evenly into the forming groove of the forming frame 9 (above the raw material layer) to achieve the layering of filling and raw materials. After the filling is fed, the feeding push rod 11 drives the feeding frame 12 to reverse and reset. During the reset process, excess filling is simultaneously collected and the filling scattered on the surface of the forming frame 9 is scraped off. This completes the automated layered feeding process of the yogurt cake. This solution achieves precise layered laying of raw materials and fillings by alternating automated feeding of feeding frame 14 and feeding frame 12, combined with the precise position adjustment of the ejector frame 10. This improves feeding efficiency and avoids errors caused by manual feeding, ensuring that the layer thickness of each yogurt cake is uniform and the ratio of raw materials to fillings is accurate, thus improving the product qualification rate. After the layered feeding is completed, the device enters the molding stage. At the same time, the material mixing and stirring are realized in linkage to achieve "molding-stirring" synchronously, which greatly improves the production efficiency. When the ejector end on the ejector frame 10 descends to the bottom position, the adjusting roller 535 moves to the lowest support plane 5363 to form a stable support for the molding frame 9 and prevent the molding frame 9 from shaking during molding. The PLC controller sends a molding command to start the extrusion push rod 3 installed on the top of the upright frame 2. Its movable end extends and pushes the molding pressure table 8 to slowly descend and gradually approach the position of the molding frame 9. The molding structure at the bottom of the molding pressure table 8 is precisely connected with the molding groove of the molding frame 9. The uniform pressure applied by the molding pressure table 8 applies pressure to the yogurt cake filling and raw materials in the molding groove of the molding frame 9 to ensure that the yogurt cake is well-formed and has a uniform texture. This solution achieves precise pressure control through the uniform speed advancement of the extrusion push rod 3 (the pressure can be flexibly adjusted according to the texture requirements of the yogurt cake) to improve the product molding quality. During the descent of the forming press 8, the feeding assembly 4 is simultaneously driven to achieve material mixing and stirring. This simplifies the device structure and reduces energy consumption by eliminating the need for an additional stirring power source. When the forming press 8 descends, it drives the guide column 411 at its bottom to pass through the guide hole of the stand 2. The guide column 411 drives the transmission rack 414 to descend synchronously. The guide shaft 418 slides in real time along the inside of the guide groove 415 to limit the descent direction of the transmission rack 414 and prevent the transmission rack 414 from deviating. When the transmission rack 414 descends, it meshes with the transmission gear 416, which drives the transmission gear 416 and the drive shaft 417 to rotate synchronously. The drive shaft 417 drives the bevel gear 413 at its end to mesh with the bevel gear 412, thereby driving the steering rod 424 and the stirring rod 425 fixed on the steering rod 424 to rotate inside the material cylinder 421, fully mixing and stirring the main and auxiliary materials inside the material cylinder 421 (the rear material cylinder 421 stirs the filling, and the right material cylinder 421 stirs the yogurt cake raw materials). This solution uses the lifting power linkage of the forming press table 8 to drive the stirring rod 425 to rotate, realizing the synchronous operation of "forming-stirring" to reduce process intervals and greatly improve production efficiency. The stirring rod 425 can realize the all-round stirring of materials, avoid the problem of uneven mixing of materials, and ensure that the filling and raw materials have the same taste. When the materials inside the material cylinder 421 are mixed, the PLC controller sends a command to control the control valve 423 at the bottom of the corresponding material cylinder 421 to open. The mixed filling or raw materials inside are accurately discharged into the feeding frame 14 or feeding frame 2 12 through the discharge pipe 422, completing the automatic replenishment of materials and further improving the degree of automation to meet the needs of large-scale continuous production. After the yogurt cakes are pressed and shaped, the device enters the ejection and discharge stage to achieve automated collection of the finished product. The PLC controller sends a reset command to control the forming press 8 to rise and reset, and drives the guide column 411 and the transmission rack 414 to rise synchronously, thereby driving the components of the feeding assembly 4 to rotate in the opposite direction. The stirring rod 425 stirs in the opposite direction to prevent the material from clumping inside the material cylinder 421, which facilitates subsequent discharge. The PLC controller controls the movable end of the adjusting push rod 532 to retract, driving the L-shaped seat 533 and the adjusting frame 536 to reset in the opposite direction. The adjusting frame 536 resets. As the adjusting roller 535 rolls along the support plane 5363 and the inclined plane 5362, it gradually rolls to the horizontal plane 5361. During this process, when the adjusting roller 535 rolls upward, it pushes the ejector frame 10 to rise synchronously. The ejector frame 10 drives the limiting platform 523 to slide upward along the outer wall of the limiting rod 522 and stretches the reset spring 524. The ejection end on the ejector frame 10 rises synchronously, pushing the yogurt cake that has been pressed and shaped in the forming frame 9 out of the forming groove, realizing the automated ejection of the finished product, avoiding the problem of damage to the finished product due to manual demolding, and improving the product qualification rate. During this process, the infrared ranging sensor 537 monitors the movement route and position of the adjusting frame 536 in real time and transmits the feedback signal to the PLC controller. When the adjusting frame 536 is reset to the preset position, the PLC controller controls the adjusting push rod 532 to stop working. The PLC controller starts the feeding push rod 11 to push the feeding frame 14 to the processing area 64, and smoothly pushes the yogurt cake that has been pushed out of the forming frame 9 away from the processing area 64 and towards the discharge area 61, completing the automated discharge of the finished product. The staff only needs to collect the finished product in the discharge area 61 to realize the automated batch processing and production of yogurt cake. In summary, this device has significant substantial differences and technological advantages compared to traditional yogurt cake production devices. Firstly, it constructs a standardized processing station through the processing table 6, dividing the area into a filling placement area 62, a raw material placement area 63, a processing area 64, and a discharge area 61. With the help of the first feeding frame 14, the second feeding frame 12, and the feeding push rod 11, it realizes automated layered feeding and automatic replenishment of raw materials and fillings, replacing manual operation and greatly improving production efficiency. Secondly, by adjusting the linkage feedback between component 5, infrared ranging sensor 537 and PLC controller, the positioning and adjustment of adjustment frame 536 and ejector frame 10 are realized to ensure uniform layer thickness and precise molding. Third, the extrusion pusher 3 controls the forming press 8 to achieve automated pressing and forming, while the material feeding component 4 is linked to achieve synchronous mixing of materials, simplifying the device structure and improving production efficiency. Fourth, by adjusting the linkage between component 5 and ejector 10, the finished product is automatically ejected and discharged, achieving fully automated mass production of yogurt cakes without manual intervention. Meanwhile, the device uses a protective frame 7 to shield the processing area 64, which can effectively prevent material spillage, reduce raw material waste, and improve the cleanliness of the production environment. The closed-loop control logic of the PLC controller ensures smooth connection between each process and accurate execution of instructions, further improving the operational stability and production reliability of the device, and completely solving the technical pain point that traditional devices cannot be adapted to large-scale yogurt cake production.

[0047] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A PLC-controlled yogurt cake layered filling forming device, comprising a work box (1) and a processing table (6) mounted on top of the work box (1), characterized in that: A protective frame (7) is installed on the outer edge of the top of the processing table (6). A vertical frame (2) is provided on the outer wall of the protective frame (7). A feeding assembly (4) is evenly installed on the outer side of the top wall of the vertical frame (2). The top of the stand (2) is equipped with an extrusion push rod (3) via a mounting bracket. The extrusion push rod (3) is connected to an external PLC controller. The movable end of the extrusion push rod (3) slides through the stand (2) and is fixedly installed with a forming press (8) for batch pressing and forming of the cake blocks after filling. The top of the work box (1) and the processing table (6) are both provided with an installation port (13). The inner wall of the installation port (13) is fixedly installed with a forming frame (9) for batch receiving of yogurt cake raw materials and fillings. The forming groove inside the forming frame (9) is movably installed with an ejector frame (10) for batch layering and discharging of yogurt cakes by adjustment. The working box (1) is equipped with an adjustment component (5) for controlling the multi-level lifting adjustment of the ejector frame (10). The protective frame (7) is equipped with a feeding push rod (11) on the right side and the rear. The moving end of the feeding push rod (11) on the right side slides through the protective frame (7) and is fixedly installed with a feeding frame one (14) for supplying powdered raw materials for yogurt cakes. The moving end of the feeding push rod (11) on the right side slides through the protective frame (7) and is fixedly installed with a feeding frame two (12) for supplying powdered fillings for yogurt cakes.

2. The PLC-controlled yogurt cake layering and filling forming device according to claim 1, characterized in that: The processing area (64) is located in the middle of the top wall of the processing table (6) and corresponding to the forming frame (9). The left side of the processing table (6) is the discharge area (61) for holding the formed yogurt cakes for easy handling by staff. The rear of the processing table (6) is located at the position corresponding to the second feeding frame (12) for filling placement area (62) for adding fillings and holding the second feeding frame (12). The right side of the processing table (6) is located at the position corresponding to the first feeding frame (14) for raw material placement area (63) for adding raw materials and holding the first feeding frame (14). The feeding push rod (11) pushes the first feeding frame (14) carrying the raw materials to cover the position of the forming frame (9) under gravity. Under the action of gravity, the raw material falls into the forming groove inside the forming frame (9). The moving end of the feeding push rod (11) retracts to control the feeding frame one (14) to return to the raw material placement area (63). During the movement, the feeding frame one (14) will scrape the excess raw material to achieve the feeding process. The feeding push rod (11) pushes the feeding frame two (12) carrying the raw material to cover the position of the forming frame (9). Under the action of gravity, the filling falls into the forming groove inside the forming frame (9). The moving end of the feeding push rod (11) retracts to control the feeding frame two (12) to return to the filling placement area (62). During the movement, the feeding frame two (12) will scrape the excess filling to achieve the feeding layering process.

3. The PLC-controlled yogurt cake layering and filling forming device according to claim 1, characterized in that: The adjustment component (5) includes a support mechanism (51), a reset mechanism (52), and a control mechanism (53). The support mechanism (51) includes a support frame (511) fixedly installed inside the work box (1). The top wall of the support frame (511) is fixedly connected to the control mechanism (53) and the reset mechanism (52). The front and rear parts of the top wall of the support frame (511) are provided with positioning grooves (512). The inner wall of the positioning groove (512) is provided with a positioning shaft (513). The outer wall of the positioning shaft (513) is slidably installed with a positioning block (514) that can move inside the positioning groove (512). The top of the positioning block (514) is fixedly connected to the bottom of the control mechanism (53).

4. The PLC-controlled yogurt cake layering and filling forming device according to claim 3, characterized in that: The control mechanism (53) includes a mounting base (531) fixedly installed on the right side of the top of the support frame (511). An adjustment push rod (532) is installed on the right side of the mounting base (531). The movable end of the adjustment push rod (532) slides through the mounting base (531) and is fixedly installed with an L-shaped seat (533). A positioning pin (534) is fixedly installed on the outer side wall of the L-shaped seat (533). The outer end of the positioning pin (534) slides through the mounting base (531) and extends to the outside. An adjustment frame (536) is fixedly installed on the front and rear parts of the left end of the L-shaped seat (533). The bottom wall of the adjustment frame (536) is fixedly connected to the top of the positioning block (514).

5. A PLC-controlled yogurt cake layering and filling forming device according to claim 4, characterized in that: When the adjusting push rod (532) pushes the L-shaped seat (533) and the adjusting frame (536) to move on the top of the support mechanism (51), it will drive the positioning block (514) to move linearly along the outer wall of the positioning shaft (513) in the positioning groove (512) to form a path limit.

6. The PLC-controlled yogurt cake layering and filling forming device according to claim 4, characterized in that: The top right side of the adjusting frame (536) is provided with a horizontal surface (5361). The bottom of the ejector frame (10) and the position corresponding to the horizontal surface (5361) are fixedly installed with adjusting rollers (535). The adjusting rollers (535) are rolled to the outer wall of the horizontal surface (5361). After the adjusting rollers (535) are on the horizontal surface (5361), the ejection end of the ejector frame (10) and the forming frame (9) are made horizontal to eject the pressed yogurt cake out of the forming groove inside the forming frame (9) to realize the discharge process. Several downward inclined surfaces (5362) are evenly opened on the right side of the adjusting frame (536). Two adjacent inclined surfaces (5362) are connected by a supporting plane (5363).

7. A PLC-controlled yogurt cake layering and filling forming device according to claim 6, characterized in that: After the adjusting roller (535) passes the inclined surface (5362) and rolls to the corresponding support plane (5363), it controls the ejector end on the ejector frame (10) to fall from the forming groove of the forming frame (9) to facilitate layered feeding. The closer the adjusting roller (535) is to the L-shaped seat (533), the more the ejector end on the ejector frame (10) falls from the forming groove of the forming frame (9) to achieve the control of the layered filling of the yogurt cake. An infrared distance sensor (537) is fixedly installed inside the work box (1) to monitor the moving distance of the adjusting frame (536).

8. A PLC-controlled yogurt cake layering and filling forming device according to claim 3, characterized in that: The reset mechanism (52) includes a support platform (521) fixedly installed on the outer wall of the support frame (511). Limiting rods (522) are fixedly installed on both the support platform (521) and the inner top wall of the work box (1). Limiting platforms (523) are slidably provided on the outer walls of the limiting rods (522). The top of the limiting platforms (523) is fixedly connected to the bottom wall of the ejector frame (10). A reset spring (524) is installed between the limiting platform (523) and the corresponding support platform (521) and sleeved outside the limiting rod (522). The reset spring (524) is in a stretched state. The reset mechanism (52) is used to coordinate with the control mechanism (53) to realize the position adjustment of the ejector frame (10).

9. A PLC-controlled yogurt cake layering and filling forming device according to claim 1, characterized in that: The feeding assembly (4) includes a transmission mechanism (41) and a mixing mechanism (42). The mixing mechanism (42) includes a material cylinder (421) installed on the top of the stand (2). The material cylinder (421) corresponds to the positions of the filling placement area (62) and the raw material placement area (63), respectively. The material cylinder (421) located at the rear is used to place yogurt cake filling, and the material cylinder (421) located on the right side is used to place yogurt cake raw material. The bottom end of each material cylinder (421) is equipped with a discharge pipe (422). The outer wall of each discharge pipe (422) is equipped with a control valve (423). The outer wall of the stand (2) is provided with a receiving groove (426) corresponding to the extension of the discharge pipe (422). A steering rod (424) is rotatably installed inside each material cylinder (421). The top end of the steering rod (424) is fixedly connected to the transmission mechanism (41). Several stirring rods (425) are evenly installed on the outer wall of the steering rod (424).

10. A PLC-controlled yogurt cake layering and filling forming device according to claim 9, characterized in that: The transmission mechanism (41) includes a bevel gear (412) fixedly installed on the top of the steering rod (424), a drive shaft (417) installed on the top of the material cylinder (421) via a bracket, a bevel gear (413) fixedly installed on one end of the drive shaft (417), the bevel gear (413) meshing with the bevel gear (412), a transmission gear (416) fixedly installed on the other end of the drive shaft (417), a guide column (411) fixedly installed on the top of the forming press (8) in the direction corresponding to the transmission gear (416), a transmission rack (414) meshing with the transmission gear (416) is fixedly installed on the top of the guide column (411) through the upright (2), a guide groove (415) is opened on the outside of the transmission rack (414), a guide shaft (418) is slidably installed on the inner wall of the guide groove (415), and the guide shaft (418) is fixedly connected to the corresponding material cylinder (421).

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