A conveying structure for a steamed bun conveying belt

Abstract

The application discloses a kind of steamed-bun conveying belt conveying structures, it is related to food processing machinery technical field, including two supporting legs, five groups of dynamic variable diameter roller assemblies, five groups of cleaning components, five groups of dynamic variable diameter roller assemblies and five groups of cleaning components are respectively arranged in the top of two supporting legs, by the synergistic effect of dynamic variable diameter roller assembly and cleaning component, compared with prior art, realize the on-line eradication of steamed-bun conveying belt in the continuous operation process and the whole cycle health guarantee of blind angle, different from traditional passive flushing, fixed scraper intermittent scraping lag scheme of high pressure water, make that the cleaning operation of high-end food conveying belt is more thorough, more efficient, first annular cam track synchronous gear chain transmission structure cooperates with flexible graphite matrix, break through the bottleneck of traditional cleaning device and conveying belt operation tempo mismatch, realize the strict mechanical synchronization of cleaning instruction, ensure that cleaning action can always accurately correspond target cleaning interval under different running speed, different load working condition.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of food processing machinery, in particular to a conveying structure for steamed bun conveying belt. BACKGROUND

[0002] The conveying structure for steamed bun conveying belt is an automatic conveying system specially designed for the production process of steamed buns, and its core function is to stably convey raw buns or finished steamed buns in a high-temperature and humid environment, while ensuring the integrity of the product shape and hygiene standards.

[0003] In the current automatic conveying device for steamed food, the cleaning of the conveying belt relies on high-pressure water impact, fixed scraper scraping or periodic manual brushing, and its core maintenance logic relies on the directional injection of external medium or contact-type physical scraping, combined with fixed-frequency intermittent shutdown cleaning, trying to maintain hygiene through external passive cleaning or periodic manual intervention. However, this mode of external passive cleaning combined with static periodic intervention has inherent cleaning dead zones and a core technical bottleneck of missing dynamic online cleaning ability, which makes it difficult to match the microbial level hygiene standards required by high-end food manufacturing. This contradiction is sharply magnified in the continuous production conditions of high temperature and high humidity. In the conveying belt bearing surface area, the traditional scraper cannot reach the contact interface with the supporting roller, forming a longitudinal through sanitary cleaning blind area. This residual flour and stuffing oil in the wet and hot environment is carbonized and bonded, becoming an absolute breeding ground for microorganisms, which leads to an increase in the risk of product microbial indicators exceeding the standard. In the return surface area of the conveying belt, the static arrangement of the spray and scraper can only handle surface dust, and the cleaning efficiency of stubborn residues in the deep mesh hinge point and chain plate gap is greatly reduced, and the cleaning degree presents a gradual decay trend, which cannot meet the sanitary compliance requirements of no dead angle.

[0004] Therefore, we propose a conveying structure for steamed bun conveying belt to solve the problems mentioned above. SUMMARY

[0005] The present application aims to provide a conveying structure for steamed bun conveying belt, which, through the synergistic effect of the dynamic variable-diameter roller assembly and the cleaning assembly, realizes the online eradication of cleaning dead angles and full-cycle hygiene protection of the steamed bun conveying belt during continuous operation, and is different from the traditional lag scheme relying on high-pressure water passive washing and fixed scraper intermittent scraping, making the cleaning operation of high-end food conveying belt more thorough and efficient.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a conveying structure for steamed-bun conveying belt, comprising two supporting legs, five groups of dynamic variable-diameter roller assemblies and five groups of cleaning assemblies, the five groups of dynamic variable-diameter roller assemblies and the five groups of cleaning assemblies are arranged on the top of the two supporting legs, and the five groups of dynamic variable-diameter roller assemblies are arranged on one side of the outer wall of the five groups of cleaning assemblies;

[0007] The dynamic variable-diameter roller assembly comprises two cam tracks, two tapered shaft cores, two groups of arc-shaped wedge blocks and two end covers, the profile curves of the two cam tracks form continuous concave sections and convex sections, and the two cam tracks are used to generate variable-diameter timing reference, the two tapered shaft cores are used to transmit axial force, the two groups of arc-shaped wedge blocks are used to change the diameter size in the radial expansion and contraction, and the two end covers are used to stabilize the variable-diameter movement of the two groups of arc-shaped wedge blocks.

[0008] The cleaning assembly comprises a scraper and a group of drainage grooves, the scraper is used to remove residual adhesion, one end of the outer wall of the scraper is communicated with a group of high-pressure spray openings, the group of high-pressure spray openings is used to soften and flush the residual adhesion, and the group of drainage grooves is used to collect sewage generated by scraping and direct the sewage out.

[0009] Preferably, two machine frames are bolted to the top of the two supporting legs, a driving roller and a driven roller are respectively connected between the outer walls of the two machine frames, one side of the outer wall of one of the machine frames is bolted to a servo motor, the outer surfaces of the driving roller and the driven roller are rotatably connected to a conveying belt, and the inner surface of the driving roller is rotatably connected to the outer surface of the power output shaft of the servo motor.

[0010] Preferably, the dynamic variable-diameter roller assembly further comprises two tooth chains, a center shaft, two fixed plates and two second guide sleeves, the two tooth chains are used to transmit the rotary motion of the driving roller to the annular cam track, two gears are engaged and connected between the inner walls of the two tooth chains, the inner surfaces of the two gears are rotatably connected to the outer surface of the power output shaft of the servo motor, the inner surfaces of the other two gears are rotatably connected to the outer surface of the rotary shaft of the driven roller, and the top of each of the two cam tracks is connected to a group of thin metal sheets, and the two thin metal sheets are used to strengthen the wear resistance and scratch resistance of the surfaces of the two groups of cam tracks.

[0011] Preferably, the center axis is fixed between two racks, the outer surface of the center axis is symmetrically sleeved with two sliding sleeves, the outer surface of the two sliding sleeves is connected with a roller bearing, the outer surface of the two roller bearings is connected with a corresponding conical shaft core, the outer wall of the two conical shaft cores is matched with the end face arc of the outer wall of the two groups of arc-shaped wedges, the outer surface of the two groups of arc-shaped wedges is fixedly connected with the inner surface of a corresponding group of arc-shaped plates, the outer surface of the two groups of arc-shaped plates is covered with a rubber coating, and the two groups of arc-shaped wedges are symmetrically placed.

[0012] Preferably, the outer surface of the two groups of solid rods is rotatably connected with a pulley, the outer surface of the center axis is symmetrically sleeved with two ball bearings, the outer surface of the two ball bearings is connected with the inner surface of a corresponding end cover, a group of holes is formed in the outer wall of the two end covers, a slide is formed between the inner surface walls of the two groups of holes, a pulley is slidably connected between the inner surface walls of the two groups of slides, the inside of the center axis is a hollow structure, two push rods are symmetrically movably inserted into the inside of the center axis, and the outer wall of the two push rods is bolted at one end to a corresponding sliding sleeve through a through hole formed in the outer surface of the center axis.

[0013] Preferably, the outer surface of the two push rods is penetrated by a first connecting rod, the outer surface of the two first connecting rods is rotatably connected with two first transmission rods, a second connecting rod is inserted between the outer surface walls of every two first transmission rods, the outer surface of the two second connecting rods is rotatably connected with two second transmission rods, a roller is sleeved on the outer surface of the second connecting rod, and the outer wall of the two fixed plates is bolted at one end to the outer wall of one of the racks.

[0014] Preferably, the outer wall of the two fixed plates is fixedly connected with a first guide sleeve and an L-shaped plate on one side, respectively, the inner surface of the two first guide sleeves is slidably connected with the outer surface of a corresponding push rod, and the outer surface of the two L-shaped plates is provided with a sliding groove.

[0015] Preferably, the outer surface walls of the two sliding grooves are rollingly connected with a corresponding roller, a third connecting rod is inserted between the outer surface walls of every two second transmission rods, a connecting block is sleeved on the outer surface of the two third connecting rods, a pressure rod is connected to the top of the two connecting blocks, and a bearing wheel is sleeved on the outer wall of the two pressure rods.

[0016] Preferably, the outer surfaces of the two bearing wheels are connected in rolling with the top of a corresponding cam track, the outer surfaces of the two pressing rods are sleeved with limiting sleeves, springs are elastically connected between the two limiting sleeves and the two second guide sleeves, the inner surfaces of the two second guide sleeves are slidingly connected with the outer surfaces of the two pressing rods, and the outer walls of the two second guide sleeves are bolted on one side of the outer wall of a corresponding rack.

[0017] Preferably, the cleaning assembly further comprises a cross frame fixed between the inner wall surfaces of the two racks, the outer wall surfaces of the cross frame are fixedly connected on one side with sliding boxes, the inner wall surfaces of the sliding boxes are slidingly connected with the outer wall surfaces of the scrapers, a group of the drainage grooves are arranged on the top of the scraper, the outer wall surfaces of the scraper are connected on both sides with collection boxes, the outer wall surfaces of the cross frame are bolted on one side with electric cylinders, the shaft ends of the electric cylinders are fixedly sleeved with metal plates, and the top of the metal plate is bolted with the bottom of the scraper.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] In the present application, through the synergistic effect of the dynamic variable-diameter roller assembly and the cleaning assembly, compared with the prior art, the online eradication of the cleaning dead angle and the whole cycle health protection of the steamed-bun conveying belt in the continuous operation process are realized, which is different from the traditional passive washing relying on high-pressure water and the lag scheme of intermittent scraping by fixed scrapers, so that the cleaning operation of the high-end food conveying belt is more thorough and efficient. Firstly, the ring-shaped cam track synchronous gear chain transmission structure cooperates with the flexible graphite matrix, breaks through the bottleneck of the mismatch between the traditional cleaning device and the running rhythm of the conveying belt, realizes the strict mechanical synchronization of the cleaning instruction, ensures that the cleaning action can always accurately correspond to the target cleaning interval under different running speeds and different load conditions, and through the accurate displacement conversion of the bearing wheel and the pressing rod, ensures that the expansion and contraction of the variable-diameter roller and the advance and retreat of the cleaning assembly are always linked, which avoids the limitation that the fixed spraying cannot reach the contact blind area, and prevents resource waste and equipment wear caused by indiscriminate continuous cleaning. Secondly, the multi-roller alternating support and the two-way driving design of the tapered shaft core of the dynamic variable-diameter roller assembly break through the limitation that the traditional cleaning must be intervened in the stop state, through the guidance of the pulley and the end cover and the radial linkage of the arc-shaped wedge, a temporary cleaning space is periodically generated below the running conveying belt, the health dead angle hidden by the supported roller is fully exposed, and the accurate cutting of the telescopic scraper and the integrated spray is matched, so that effective cleaning treatment is formed, thereby avoiding the need for frequent manual brushing during shutdown, and solving the inherent contradiction between health quality and production efficiency in continuous production. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front structure perspective view of a conveying structure for a steamed-bun conveying belt.

[0021] Figure 2It is a bottom structure perspective view of the conveying structure for the steamed-bun conveying belt of the application;

[0022] Figure 3 It is a position relation diagram of the dynamic variable-diameter roller assembly and the cleaning assembly in the conveying structure for the steamed-bun conveying belt of the application;

[0023] Figure 4 It is an installation position structure schematic diagram of the dynamic variable-diameter roller assembly in the conveying structure for the steamed-bun conveying belt of the application;

[0024] Figure 5 It is an installation position structure schematic diagram of the tooth chain, cam track and thin metal sheet in the conveying structure for the steamed-bun conveying belt of the application;

[0025] Figure 6 It is an installation position structure schematic diagram of the end cover and the rubber coating in the conveying structure for the steamed-bun conveying belt of the application;

[0026] Figure 7 It is an installation position structure schematic diagram of the central shaft, sliding sleeve and conical shaft core in the conveying structure for the steamed-bun conveying belt of the application;

[0027] Figure 8 It is an installation position structure schematic diagram of the roller bearing, conical shaft core, wedge block and arc-shaped plate in the conveying structure for the steamed-bun conveying belt of the application;

[0028] Figure 9 It is an installation position structure schematic diagram of the bearing wheel, limiting sleeve and spring in the conveying structure for the steamed-bun conveying belt of the application;

[0029] Figure 10 It is an installation position structure schematic diagram of the fixed plate, L-shaped plate and sliding groove in the conveying structure for the steamed-bun conveying belt of the application;

[0030] Figure 11 It is an enlarged view of the structure at A in Figure 8 ;

[0031] Figure 12 It is an enlarged view of the structure at B in Figure 8 ;

[0032] Figure 13 It is an enlarged view of the structure at C in Figure 10 ;

[0033] Figure 14 It is an installation position structure schematic diagram of the cleaning assembly in the conveying structure for the steamed-bun conveying belt of the application;

[0034] Figure 15 It is an installation position structure schematic diagram of the horizontal frame, sliding bin and scraper in the conveying structure for the steamed-bun conveying belt of the application;

[0035] Figure 16 For Figure 14 Enlarged view of the structure at D in FIG.

[0036] In the figure: 100, foot; 200, rack; 300, driving roller; 400, driven roller; 500, conveying belt; 600, servo motor; 700, dynamic variable diameter roller assembly; 701, toothed chain; 702, cam track; 703, gear; 704, thin metal sheet; 705, center shaft; 706, sliding sleeve; 707, roller bearing; 708, tapered shaft core; 709, wedge block; 710, arc plate; 711, solid rod; 712, pulley; 713, ball bearing; 714, end cover; 715, push rod; 716, first guide sleeve; 717, fixed plate; 718, L-shaped plate; 719, sliding groove; 720, first connecting rod; 721, first transmission rod; 722, second connecting rod; 723, second transmission rod; 724, roller; 725, third connecting rod; 726, connecting block; 727, pressing rod; 728, bearing wheel; 729, limiting sleeve; 730, spring; 731, second guide sleeve; 732, rubber coating; 800, cleaning assembly; 801, cross frame; 802, sliding bin; 803, scraper; 804, drainage groove; 805, collection bin; 806, electric cylinder; 807, metal plate. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0038] As Figures 1-3 shown, the present embodiment discloses a conveying structure for steamed bun conveying belt, which comprises two feet 100, five dynamic variable diameter roller assemblies 700 and five cleaning assemblies 800. The five dynamic variable diameter roller assemblies 700 and the five cleaning assemblies 800 are respectively arranged on the top of the two feet 100. The five dynamic variable diameter roller assemblies 700 are arranged on one side of the outer wall of the five cleaning assemblies 800.

[0039] As Figure 4 and Figure 8As shown, the dynamic variable-diameter roller assembly 700 includes two cam tracks 702 (the profile curves of the cam tracks 702 are staggered in the circumferential direction, and the convex and concave segments are arranged in phase angles, so that at any time, at least a plurality of groups of rollers are in the expanded-diameter supporting state, and only one group or two adjacent groups of rollers are in the reduced-diameter cleaning state), two tapered shaft cores 708, two groups of arc-shaped wedges 709, two end covers 714, the profile curves of the two cam tracks 702 form continuous concave and convex segments, and the two cam tracks 702 are used to generate variable-diameter timing references, the two tapered shaft cores 708 are used to transmit axial forces, the two groups of arc-shaped wedges 709 are used to change the diameter in the radial expansion and contraction, and the two end covers 714 are used to stabilize the variable-diameter movement of the two groups of arc-shaped wedges 709 (a light reset spring (not shown in the figure) can be arranged between the bottom of each group of arc-shaped wedges 709 and the end cover 714 to ensure that the wedge can be quickly and reliably radially reset after the tapered shaft core 708 is withdrawn).

[0040] As shown in Figure 16 The cleaning assembly 800 includes a scraper 803 and a group of drainage grooves 804, and the scraper 803 is used to remove residual adhesives, one end of the outer wall of the scraper 803 is connected to a group of high-pressure spray openings, and the group of high-pressure spray openings is used to soften and flush the residual adhesives, and the group of drainage grooves 804 is used to collect the sewage generated by scraping and direct the sewage out.

[0041] This embodiment mainly aims at the current automatic conveying device for steaming noodles, the cleaning of the conveying belt 500 mainly depends on high-pressure water impact, fixed scraper 803 scraping, or regular manual brushing, and the core maintenance logic depends on the directional spraying of external medium or contact physical scraping, and combined with intermittent cleaning at fixed frequency, passive cleaning or periodic manual intervention is used to try to maintain hygiene, however, this mode of external passive cleaning combined with static periodic intervention has inherent cleaning dead zones and core technical bottlenecks of lack of dynamic online cleaning ability, which leads to the difficulty in matching the actual cleaning effect and the microbial level hygiene standard required by high-end food manufacturing, and the contradiction is sharply enlarged in the continuous production conditions of high temperature and high humidity. In the conveying belt 500 bearing area, the traditional scraper 803 cannot touch and support the contact interface of the roller, forming a longitudinal through sanitary cleaning blind area. The residual noodles and stuffing oil in the wet and hot environment are carbonized and bonded, becoming an absolute breeding ground for microorganisms, which leads to an increase in the risk of exceeding the product microbial index. In the return area of the conveying belt 500, the static arrangement of the spray and the scraper 803 can only handle the surface dust, and the cleaning efficiency of the stubborn residues in the deep mesh hinge point and the chain plate gap is greatly reduced, and the cleaning degree presents a gradual attenuation trend, which cannot meet the sanitary compliance requirements of no dead angle.

[0042] The embodiment is completed to solve the problems of the prior art. By the cooperation of the dynamic variable-diameter roller assembly 700 and the cleaning assembly 800, compared with the prior art, the online eradication of the cleaning dead angle of the steamed-bun conveying belt 500 in the continuous operation process and the whole-cycle hygiene guarantee are realized. Unlike the traditional passive flushing relying on high-pressure water and the lag scheme of intermittent scraping by the fixed scraper 803, the cleaning operation of the high-end food conveying belt 500 is more thorough and efficient. First, the cam track 702 synchronous gear chain 701 transmission structure cooperates with the flexible graphite matrix, breaks through the bottleneck of the mismatch between the traditional cleaning device and the conveying belt 500 operation tempo, realizes the strict mechanical synchronization of the cleaning instruction, ensures that the cleaning action can always accurately correspond to the target cleaning interval under different running speeds and different load conditions, and at the same time, through the precise displacement conversion of the bearing wheel 728 and the pressing rod 727, the expansion and contraction of the variable-diameter roller and the advance and retreat of the cleaning assembly 800 are always linked, which avoids the limitation that the fixed spraying cannot reach the contact blind area and prevents resource waste and equipment wear caused by indiscriminate continuous cleaning. Secondly, the multi-roller alternate support and the two-way drive design of the conical shaft core 708 of the dynamic variable-diameter roller assembly 700 break through the limitation that the traditional cleaning must be intervened in shutdown, through the guidance of the pulley 712 and the end cover 714 and the radial linkage of the arc plate 710 and the wedge block 709, a temporary cleaning space is periodically generated below the running conveying belt 500, the hygiene dead angle hidden by the supported roller is fully exposed, and the precise cutting of the telescopic scraper 803 and the integrated spray is matched, forming effective cleaning treatment, so that manual brushing without relying on frequent shutdown can solve the inherent contradiction that hygiene quality and production efficiency cannot be reconciled in continuous production.

[0043] According to Figures 1-2 As shown in the figure, the top of the two feet 100 is bolted to two racks 200, and the outer walls of the two racks 200 are respectively connected to a driving roller 300 and a driven roller 400. One side of the outer wall of one of the racks 200 is bolted to a servo motor 600, the outer surfaces of the driving roller 300 and the driven roller 400 are rotatably connected to a conveying belt 500, and the inner surface of the driving roller 300 is rotatably connected to the outer surface of the power output shaft of the servo motor 600.

[0044] In the embodiment of the present application, firstly, both the two supporting legs 100 are made of 304 stainless steel material, which can stably support the weight of the entire conveying structure and avoid shaking of the equipment during high-frequency operation, secondly, the rack 200 as the core installation reference is fixed with the supporting legs 100 through bolts, which is not only convenient to disassemble and assemble, but also can be quickly disassembled and cleaned during subsequent maintenance, which can effectively adapt to the hygiene requirements of the food processing scene, and the servo motor 600 directly drives the driving roller 300 to rotate, and then drives the driven roller 400 to rotate synchronously through the friction force between the driving roller 300 and the conveying belt 500, which can ensure the stable running speed of the conveying belt 500 and avoid the steamed buns from tilting and stacking due to uneven speed during the conveying process, and the direct connection between the driving roller 300 and the servo motor 600 reduces the intermediate transmission loss, so that the power transmission is more efficient, which is suitable for the continuous high-intensity operation requirements of the steamed bun production line.

[0045] According to Figures 1-7 As shown in the figure, the dynamic variable-diameter roller assembly 700 further comprises two tooth chains 701, a center shaft 705, two fixed plates 717, and two second guide sleeves 731, and the two tooth chains 701 are used to transmit the rotary motion of the driving roller 300 to the annular cam track 702, the inner walls of the two tooth chains 701 are meshed and connected with two gears 703, the inner surfaces of the two gears 703 are rotatably connected with the outer surface of the power output shaft of the servo motor 600, the inner surfaces of the other two gears 703 are rotatably connected with the outer surface of the rotating shaft of the driven roller 400, and the top of each of the two cam tracks 702 is connected with a group of thin metal sheets 704, and the two thin metal sheets 704 are used to strengthen the wear resistance and scratch resistance of the surfaces of the two groups of cam tracks 702.

[0046] In the embodiment of the present application, firstly, the tooth chain 701 and the gear 703 adopt meshing transmission, which can completely avoid the problem of slipping compared with the traditional belt transmission, so that the rotary speed of the cam track 702 is effectively synchronized with the rotary motion of the driving roller 300, which is the key to ensuring the accuracy of the variable-diameter timing, and only when the cam track 702 and the conveying belt 500 are in consistent operation rhythm, the subsequent variable-diameter action can correspond to the cleaning interval, wherein the fixed plate 717 is fixed with the rack 200 through bolts, which can provide a stable installation basis for the center shaft 705 and the second guide sleeve 731, and can prevent these core components from deviating during movement, wherein the cam track 702 is made of food-grade flexible graphite, which can fully adapt to the circular motion of the tooth chain 701, and the thin metal sheets 704 on the top of the cam track 702 are made of 304 stainless steel material, which can effectively resist the wear caused by the long-term rolling of the bearing wheel 728.

[0047] According to Figures 7-8As shown, the center shaft 705 is fixed between the two racks 200, the outer surface of the center shaft 705 is symmetrically sleeved with two sliding sleeves 706, the outer surface of the two sliding sleeves 706 is connected with a roller bearing 707, the outer surface of the two roller bearings 707 is connected with a corresponding one of the two tapered shaft cores 708, the outer wall of one end of the two tapered shaft cores 708 is matched with the end surface arc of the outer wall of one end of the two sets of arc-shaped wedge blocks 709, the outer surface of the two sets of arc-shaped wedge blocks 709 is fixedly connected with the inner surface of a corresponding one of the two sets of arc-shaped plates 710, the outer surface of the two sets of arc-shaped plates 710 is covered with a rubber coating 732, and the two sets of arc-shaped wedge blocks 709 are symmetrically placed, and the outer wall of one end of the two sets of arc-shaped wedge blocks 709 is fixedly connected with a solid rod 711.

[0048] In the embodiment of the application, first, the center shaft 705 is made of 40Cr quenched and tempered steel, the center shaft 705 serves as a fixed reference for the entire dynamic variable-diameter roller assembly 700, can effectively resist the radial force generated when the tapered shaft core 708 slides, and avoids deformation, second, the cooperation of the sliding sleeve 706 and the roller bearing 707 can convert the sliding friction of the tapered shaft core 708 into rolling friction, making the tapered shaft core 708 slide more smoothly in the axial direction and not jamming, and the roller bearing 707 can effectively inhibit the synchronous rotation motion from being transmitted to the entire dynamic variable-diameter roller assembly 700, and third, the end surface arc of the tapered shaft core 708 and the wedge block 709 is strictly matched, which can ensure that the axial force is uniformly transmitted to each wedge block 709 and avoid local wear caused by uneven force, and the rubber coating 732 on the outer surface of the arc-shaped plate 710 is made of food-grade silicone, which can increase the friction with the inner surface of the conveyor belt 500 and avoid scratching caused by direct metal contact with the conveyor belt 500.

[0049] According to Figure 8 and Figure 11 As shown, the outer surface of the two sets of solid rods 711 is rotatably connected with a pulley 712, the outer surface of the center shaft 705 is symmetrically sleeved with two ball bearings 713, the outer surface of the two ball bearings 713 is connected with the inner surface of a corresponding one of the two end covers 714, a group of holes is formed in one side of the outer wall of the two end covers 714, a slide is formed between the inner wall of the two groups of holes, the pulley 712 is slidably connected between the inner walls of the two slides, the inside of the center shaft 705 is a hollow structure, two push rods 715 are symmetrically movably inserted into the inside of the center shaft 705, and one end of the outer wall of the two push rods 715 passes through the through hole formed in the outer surface of the center shaft 705 and is bolted to the outer wall of one end of a corresponding one of the two sliding sleeves 706.

[0050] In the embodiment of the present application, first, the pulley 712 on the solid rod 711 cooperates with the slide of the end cover 714, which can strictly limit the movement direction of the arc-shaped wedge 709, so that the arc-shaped plate 710 can only move radially and cannot move axially with the conical shaft core 708, which is the key to ensure uniform variable diameter. The ball bearing 713 allows the end cover 714 to rotate smoothly around the central shaft 705, avoiding wear caused by direct friction between the end cover 714 and the central shaft 705. The central shaft 705 is designed as a hollow structure, which can not only reduce the overall weight, but also provide installation space for the push rod 715. The push rod 715 is fixed with the sliding sleeve 706 through bolts, which can accurately transmit the external driving force to the conical shaft core 708, ensuring the stable sliding stroke of the conical shaft core 708, and further ensuring the variable diameter accuracy of the arc-shaped wedge 709.

[0051] According to Figure 10 and Figure 13 It is shown that the outer surfaces of the two push rods 715 are penetrated by the first connecting rods 720, the outer surfaces of the two first connecting rods 720 are rotatably connected with the two first transmission rods 721, the second connecting rods 722 are inserted between the outer surface walls of every two first transmission rods 721, the outer surfaces of the two second connecting rods 722 are rotatably connected with the two second transmission rods 723, the outer surfaces of the second connecting rods 722 are sleeved with the rollers 724, and one end of the outer wall of the two fixed plates 717 and one end of the outer wall of the rack 200 are bolted.

[0052] In the embodiment of the present application, first, the transmission structure composed of the first connecting rod 720, the first transmission rod 721 and the second connecting rod 722 can stably convert the swing of the second transmission rod 723 into the axial movement of the push rod 715. This multi-connecting rod cooperation mode can effectively disperse the force transmission, avoid damage to the components caused by excessive stress on a single point, and cooperate with the slide groove 719 of the L-shaped plate 718 to provide accurate guidance for the movement of the first transmission rod 721 and the second transmission rod 723, preventing deviation during transmission. Secondly, the fixed plate 717 firmly fixes these transmission components on the rack 200, ensuring the position stability of the entire transmission chain. Even when the equipment is running at high frequency, the transmission will not be misaligned due to vibration, ensuring the responsiveness of the variable diameter action.

[0053] According to Figure 10 It is shown that the outer surfaces of the two fixed plates 717 are respectively fixedly connected with the first guide sleeve 716 and the L-shaped plate 718 on one side of the outer wall, the inner surfaces of the two first guide sleeves 716 are slidably connected with the outer surfaces of the corresponding push rod 715, and the outer surfaces of the two L-shaped plates 718 are provided with the slide groove 719.

[0054] In the embodiment of the present application, firstly, the first guide sleeve 716 adopts wear-resistant copper sleeve material, which is matched with the sliding of the push rod 715, can strictly limit the movement direction of the push rod 715, and make the push rod 715 only slide in the axial direction, so that the radial skewing of the push rod 715 is avoided, which avoids the uneven stress of the conical shaft core 708 caused by the skewing of the push rod 715, and further prevents the eccentricity of the arc-shaped wedge block 709 when the diameter of the arc-shaped wedge block 709 changes, secondly, the sliding groove 719 on the L-shaped plate 718 is processed by numerical control milling, which can effectively reduce the frictional resistance when the roller 724 rolls, and the arc-shaped track of the sliding groove 719 can guide the smooth movement of the roller 724, which lays a foundation for the accurate action of the subsequent pressing rod 727.

[0055] According to Figure 10 and Figure 13 It is shown that the outer walls between the two sliding grooves 719 are connected with the corresponding roller 724 rolling, the outer walls between the two second transmission rods 723 are inserted with the third connecting rod 725, the outer surfaces of the two third connecting rods 725 are sleeved with the connecting block 726, the top of the two connecting blocks 726 is connected with the pressing rod 727, and the outer wall of the two pressing rods 727 is sleeved with the bearing wheel 728.

[0056] In the embodiment of the present application, firstly, the roller 724 rolls in the sliding groove 719, which can greatly reduce the wear compared with the sliding contact, can prolong the service life of the component, and the cooperation of the third connecting rod 725 and the connecting block 726 can convert the up-down linear motion of the pressing rod 727 into the swing of the second transmission rod 723, wherein the connecting block 726 adopts an integral molding structure, which avoids the loosening problem caused by the splicing of multiple components, and the bearing wheel 728 at one end of the pressing rod 727 adopts double-row angular contact ball bearings, which can bear the composite force in the radial and axial directions, and the rolling contact with the cam track 702 can ensure that the force transmission is more uniform, and the damage of the cam track 702 and the bearing wheel 728 caused by the excessive local stress is avoided, and the rotation of the bearing wheel 728 can also make the action of the pressing rod 727 more smooth, and reduce the risk of jamming.

[0057] According to Figure 10As shown, the outer surface of the two bearing wheels 728 is in rolling connection with the top of the corresponding cam track 702, the outer surface of the two pressing rods 727 is sleeved with the limiting sleeve 729, the two limiting sleeves 729 and the two second guide sleeves 731 are elastically connected with the springs 730, the inner surface of the two second guide sleeves 731 is in sliding connection with the outer surface of the two pressing rods 727, and one end of the outer wall of the two second guide sleeves 731 is in bolt connection with one side of the outer wall of the corresponding rack 200 (that is, when the bearing wheel 728 runs to the convex section of the cam track 702, the pressing rod 727 is lifted up, and through the connecting rod mechanism composed of the third connecting rod 725, the second transmission rod 723, the second connecting rod 722, the first transmission rod 721 and the first connecting rod 720, the upward displacement is converted into the outward thrust of the push rod 715, the sliding sleeve 706 and the conical shaft core 708 are pushed outwards, the arc-shaped wedge block 709 is forced to expand radially, and the diameter of the roller is increased to support the conveyor belt 500. When the bearing wheel 728 runs to the recessed section of the cam track 702, the pressing rod 727 moves downward under the action of the spring 730, and through the above connecting rod mechanism, the upward displacement is converted into the inward pulling force of the push rod 715, the conical shaft core 708 is pulled inwards, and the arc-shaped wedge block 709 is radially retracted under the action of gravity or a reset mechanism such as a light spring, so that the diameter of the roller is reduced to form a cleaning gap).

[0058] In the embodiment of the application, first, the spring 730 is always in a slightly compressed state, which can provide a continuous downward pressure for the pressing rod 727, ensuring that the bearing wheel 728 is always in close contact with the outer contour of the cam track 702 and will not be separated due to vibration or rotation of the cam track 702. This is the core of ensuring the timing accuracy of the variable diameter. Only when the bearing wheel 728 is in close contact with the cam track 702 can the position of the pressing rod 727 be adjusted in real time following the change of the contour of the cam track 702. Secondly, the sliding fit between the second guide sleeve 731 and the pressing rod 727 can limit the pressing rod 727 to move only up and down, avoiding the displacement of the pressing rod 727 to cause the contact between the bearing wheel 728 and the cam track 702 to be misaligned. Meanwhile, the limiting sleeve 729 can limit the maximum compression amount of the spring 730 to prevent the spring 730 from losing elasticity due to excessive compression, and also to avoid the pressing rod 727 from moving downward excessively to damage the cam track 702, ensuring the stable operation of the entire dynamic variable-diameter roller assembly 700.

[0059] According to Figures 15-16As shown, the cleaning assembly 800 further comprises a cross frame 801 fixed between the inner walls of the two racks 200, and the outer walls of the cross frame 801 are fixedly connected with sliding boxes 802, the inner walls of the sliding boxes 802 and the outer walls of the scraper 803 are slidingly connected, a group of drainage grooves 804 are arranged on the top of the scraper 803, the outer walls of the scraper 803 are connected with collecting boxes 805, the outer walls of the cross frame 801 are bolted with electric cylinders 806, the shaft ends of the electric cylinders 806 are fixedly sleeved with metal plates 807, and the top of the metal plates 807 is bolted with the bottom of the scraper 803.

[0060] In the embodiment of the present application, first, the cross frame 801 serves as the installation carrier of the cleaning assembly 800 and is fixed with the rack 200 by bolts, which can ensure the relative position of the cleaning assembly 800 and the conveying belt 500 stable and ensure that the scraper 803 can accurately align the cleaning interval of the conveying belt 500, wherein the sliding box 802 is made of food-grade stainless steel and is smooth inside without dead angle, and the sliding cooperation with the scraper 803 can make the scraper 803 flexible and stretchable, when the dynamic variable-diameter roller assembly 700 is shrunk to form a cleaning gap, the electric cylinder 806 can drive the scraper 803 to quickly stretch out and scrape the residues adhered to the inner surface of the conveying belt 500, secondly, the drainage grooves 804 on the top of the scraper 803 can timely guide the sewage washed down by the high-pressure spray nozzle away, avoiding the secondary pollution caused by the accumulation of sewage on the surface of the scraper 803, and the collecting boxes 805 on both sides of the scraper 803 can collect the solid residues scraped off, which can be cleaned regularly without frequent disassembly, and meanwhile, the electric cylinder 806 is connected with the scraper 803 through the metal plate 807, which can accurately control the stretching length of the scraper 803, which can ensure complete cleaning and will not cause the conveying belt 500 to be worn out due to the excessive stretching of the scraper 803.

[0061] In use, first servo motor 600 access to external power supply start, so that the drive roller 300 rotation, then driven by the conveyor belt 500 roller 400 synchronous operation, at the same time, the drive roller 300 shaft gear 703 through the chain 701 transmission, drive ring cam track 702 with the conveyor belt 500 completely synchronized angular velocity rotation, cam track 702 top concave-convex profile as the variable diameter instruction physical carrier, its recessed section corresponding to the expansion of the roller, that is, support working condition can ensure stable conveying of the conveyor belt 500, while the convex section corresponding to the roller shrinkage, that is, the formation of the cleaning gap working condition can be for cleaning components 800 let, the subsequent process when the cam track 702 begins to rotate synchronously, its top thin metal sheet 704 and bearing wheel 728 continuous rolling contact, when the bearing wheel 728 operation to the recessed section of the cam track 702, the pressure rod 727 under the pre-pressure of the spring 730 down, through the third connecting rod 725 drive second drive rod 723 swing downward around the pivot, then the second drive rod 723 through the second connecting rod 722 drive first drive rod 721 swing synchronous, finally through the first connecting rod 720 swing motion into axial thrust of the push rod 715, the push rod 715 push the sliding sleeve 706 along the central shaft 705 sliding, sliding sleeve 706 through the roller bearing 707 drive tapered shaft core 708 synchronous outward displacement, when the tapered shaft core 708 outward displacement, tapered shaft core 708 taper and arc wedge 709 inner inclined surface fit, can convert axial thrust into radial thrust, at this time the arc wedge 709 in solid rod 711, pulley 712 in along the end cover 714 slide way constraint, accurate radial expansion, drive the outer rubber 732 diameter increase, at this time the roller is in the expansion state, tightly fit the inner surface of the conveyor belt 500, realize stable support, when the bearing wheel 728 rolling to the convex section of the cam track 702, cam profile lift bearing wheel 728, drive the pressure rod 727 to overcome the spring 730 elastic force upward sliding, through the connecting rod mechanism reverse transmission, push rod 715 generate axial tension, immediately tapered shaft core 708 synchronous inward retraction, at this time the tapered shaft core 708 on the wedge 709 radial thrust disappears, wedge 709 in its own gravity and end cover 714 slide way constraint radial contraction, at the same time the rubber 732 diameter decreases, form a temporary cleaning gap under the conveyor belt 500, at this time the electric cylinder 806 drive scraper 803 along the slide 802 radial extension, scraper 803 top spray nozzle first injection of high pressure cleaning fluid, then the scraper 803 blade fit the inner surface of the conveyor belt 500 mechanical scraping, at the same time the cleaning generated sewage through the drain 804 flow to both sides of the collection bin 805, avoid dripping pollution, clean up after the electric cylinder 806 pull scraper 803 back to the slide 802, waiting for the next cleaning gap, wherein five groups of dynamic variable diameter roller assembly 700 in the precise control of the cam track 702, in turn alternate complete recessed section expansion support, convex section contraction cleaning, recessed section expansion support cycle,Both uninterrupted support of the conveyor belt 500 and periodic opening of the cleaning zone are ensured.

[0062] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified or some of the technical features can be replaced by equivalent features by those skilled in the art, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A conveying structure for a steam bun conveyor belt, characterized in that: It includes two support legs (100), five sets of dynamic variable diameter roller assemblies (700), and five sets of cleaning assemblies (800). The five sets of dynamic variable diameter roller assemblies (700) and the five sets of cleaning assemblies (800) are respectively installed on the top of the two support legs (100), and the five sets of dynamic variable diameter roller assemblies (700) are located on one side of the outer wall of the five sets of cleaning assemblies (800). The tops of the two support legs (100) are bolted to two frames (200). A drive roller (300) and a driven roller (400) are respectively connected between the outer walls of the two frames (200). A servo motor (600) is bolted to one side of the outer wall of one of the frames (200). A conveyor belt (500) is rotatably connected to the outer surfaces of the drive roller (300) and the driven roller (400). The inner surface of the drive roller (300) is rotatably connected to the outer surface of the power output shaft of the servo motor (600). The dynamic diameter-changing roller assembly (700) includes two cam tracks (702), two tapered shafts (708), two sets of arc-shaped wedges (709), and two end caps (714). The contour curves of the two cam tracks (702) form continuous concave and convex sections. The two cam tracks (702) are used to generate a diameter-changing timing reference. The two tapered shafts (708) are used to transmit axial force. The two sets of arc-shaped wedges (709) are used to expand and contract radially to change the diameter. The two end caps (714) are used to stabilize the diameter-changing movement of the two sets of arc-shaped wedges (709). The dynamic variable diameter roller assembly (700) also includes two toothed chains (701), a central shaft (705), two fixed plates (717), and two second guide sleeves (731). The two toothed chains (701) are used to transmit the rotational motion of the drive roller (300) to the annular cam track (702). Two gears (703) are meshed between the inner surfaces of the two toothed chains (701). The inner surfaces of the two gears (703) are rotatably connected to the outer surface of the power output shaft of the servo motor (600), and the inner surfaces of the other two gears (703) are rotatably connected to the outer surface of the driven roller (400) shaft. Two push rods (715) are symmetrically inserted inside the central shaft (705), and one end of the outer wall of each push rod (715) passes through a through hole opened on the outer surface of the central shaft (705) and is bolted to one end of the outer wall of a corresponding sliding sleeve (706). The outer surfaces of the two push rods (715) are each penetrated by a first connecting rod (720), and the outer surfaces of the two first connecting rods (720) are rotatably connected to two first transmission rods (721). A second connecting rod (722) is inserted between the outer walls of each pair of first transmission rods (721), and the outer surfaces of the two second connecting rods (722) are rotatably connected to two second transmission rods (723). Rollers (724) are fitted on the outer surfaces of the second connecting rods (722). One end of the outer wall of the two fixed plates (717) is bolted to one end of the outer wall of one of the frames (200). One guide sleeve (716) and an L-shaped plate (718) are fixedly connected to one side of the outer wall of each of the two fixed plates (717). The inner surfaces of the two first guide sleeves (716) are slidably connected to the outer surface of a corresponding push rod (715). The outer surfaces of the two L-shaped plates (718) are provided with grooves (719). Each of the two slide grooves (719) is rotatably connected to a corresponding roller (724) between its outer outer walls. A third connecting rod (725) is inserted between the outer outer walls of each pair of second transmission rods (723). A connecting block (726) is fitted on the outer surface of each of the two third connecting rods (725). A pressure rod (727) is connected to the top of each of the two connecting blocks (726). A bearing wheel (728) is fitted on one end of the outer wall of each of the two pressure rods (727). The cleaning component (800) includes a scraper (803) and a set of drainage channels (804). The scraper (803) is used to remove adhesive residues. One end of the outer wall of the scraper (803) is connected to a set of high-pressure spray nozzles, which are used to soften and rinse the residues. The set of drainage channels (804) is used to collect the wastewater generated by scraping and direct it out.

2. The conveying structure for steamed bun conveyor belt according to claim 1, characterized in that: The top of each of the two cam tracks (702) is connected to a set of thin metal sheets (704), and the two thin metal sheets (704) are used to enhance the wear resistance and scratch resistance of the surfaces of the two sets of cam tracks (702).

3. The conveying structure for steamed bun conveyor belt according to claim 1, characterized in that: The central shaft (705) is fixed between two frames (200). Two sliding sleeves (706) are symmetrically sleeved on the outer surface of the central shaft (705). Roller bearings (707) are connected to the outer surfaces of the two sliding sleeves (706). The outer surfaces of the two roller bearings (707) are sleeved and connected to a corresponding conical shaft core (708). The arc of one end face of the outer wall of the two conical shaft cores (708) matches the arc of one end face of the outer wall of the two sets of arc wedges (709). The outer surfaces of the two sets of arc wedges (709) are fixedly connected to the inner surface of a corresponding set of arc plates (710). The outer surfaces of the two sets of arc plates (710) are covered with rubber (732). The two sets of arc wedges (709) are placed symmetrically. A solid rod (711) is fixedly connected to one end of the outer wall of the two sets of arc wedges (709).

4. The conveying structure for steamed bun conveyor belt according to claim 3, characterized in that: The outer surfaces of the two sets of solid rods (711) are rotatably connected to pulleys (712). The outer surface of the central shaft (705) is symmetrically fitted with two ball bearings (713). The outer surfaces of the two ball bearings (713) are connected to the inner surfaces of a corresponding end cap (714). A set of holes is opened on one side of the outer wall of the two end caps (714). A slide is opened between the inner surface walls of the two sets of holes. A pulley (712) is slidably connected between the inner surface walls of the two sets of slides. The interior of the central shaft (705) is a hollow structure.

5. The conveying structure for steamed bun conveyor belt according to claim 1, characterized in that: The outer surfaces of the two bearing wheels (728) are rolledly connected to the top of a corresponding cam track (702). The outer surfaces of the two pressure rods (727) are fitted with limiting sleeves (729). The two limiting sleeves (729) and the two second guide sleeves (731) are elastically connected by springs (730). The inner surfaces of the two second guide sleeves (731) are slidably connected to the outer surfaces of the two pressure rods (727). One end of the outer wall of the two second guide sleeves (731) is bolted to one side of the outer wall of a corresponding frame (200).

6. The conveying structure for steamed bun conveyor belt according to claim 1, characterized in that: The cleaning assembly (800) also includes a crossbeam (801), which is fixed between the inner walls of the two frames (200). A slide chamber (802) is fixedly connected to one side of the outer wall of the crossbeam (801). The inner walls of the slide chambers (802) are slidably connected to the outer walls of the scraper (803). A set of drainage channels (804) is opened on the top of the scraper (803). A collection chamber (805) is connected to both sides of the outer wall of the scraper (803). An electric cylinder (806) is bolted to one side of the outer wall of the crossbeam (801). A metal plate (807) is fixedly sleeved on the shaft end of the electric cylinder (806). The top of the metal plate (807) is bolted to the bottom of the scraper (803).

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