Egg roll weighing and sorting system

Abstract

The application discloses a waffle stick weighing and sorting system, and mainly solves the technical problems of low efficiency and poor consistency of the existing manual weighing and sorting. The system comprises a waffle stick feeding and conveying unit, a differential speed and distance pulling unit, a weighing unit and a sorting unit arranged in sequence from upstream to downstream. The differential speed and distance pulling unit comprises a plurality of stages of distance pulling conveying belts which are sequentially connected along the conveying direction and gradually increase in speed. The weighing unit comprises a weighing conveying belt for detecting the weight of the waffle stick. The material falling module comprises a waffle stick conveying belt, a tray conveying belt arranged below the waffle stick conveying belt, and a guide driving assembly for adjusting the end direction of the waffle stick conveying belt so that the waffle stick falls into the waffle stick tray on the tray conveying belt. Limiting blocks for limiting the position of the waffle stick tray are symmetrically arranged on both sides of the tray conveying belt. The weighing and sorting system can reduce the adverse effects of human factors on the reliability of sorting, and greatly improve the sorting efficiency.

Description

Technical Field

[0001] This application relates to the field of food production equipment technology, specifically to a tart stick weighing and sorting system. Background Technology

[0002] In the production of egg tarts, the tart sticks are a crucial initial step. Tart sticks are small, cylindrical dough pieces obtained after the raw dough for the egg tart crust is mechanically divided and pre-shaped. The uniformity of the size and weight of these seemingly simple dough sticks directly determines the consistency of the tart shell's appearance, the evenness of baking, and the final product's taste and quality. Therefore, weighing and sorting the tart sticks becomes a core process to ensure standardized and high-quality production.

[0003] Currently, the weighing and sorting of tart sticks is mainly done manually. After the dough is divided into initial dough pieces of similar size, it is transported to a spacious workbench. The operator is usually equipped with an electronic scale accurate to one decimal place and several containers for holding tart sticks of different weight levels (e.g., "qualified", "slightly heavy", "slightly light"). The operator then picks up the tart sticks one by one and places them on the scale pan to weigh them. Based on the scale reading, the operator places the tart stick into the corresponding tart stick container.

[0004] However, in the process of implementing the technical solution in the embodiments of this application, the inventors of this application found that the efficiency of manually weighing and sorting tart sticks is relatively low, and the long-term repetitive labor is very likely to cause visual and physical fatigue of the operator, which greatly increases the probability of misjudgment, thereby causing fluctuations in the consistency of tart sticks and ultimately affecting the production quality of egg tarts.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the background technology of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] In view of at least one of the above technical problems, this disclosure provides a tart stick weighing and sorting system, which mainly solves the technical problems of low efficiency and poor sorting consistency of existing manual weighing and sorting.

[0007] According to one aspect of this disclosure, a tart stick weighing and sorting system is provided, comprising a tart stick feeding and conveying unit, a differential speed pulling unit, a weighing unit, and a sorting unit having a plurality of unloading modules arranged sequentially from upstream to downstream; the tart stick feeding and conveying unit includes a feeding conveyor belt; the differential speed pulling unit includes a plurality of pulling conveyor belts connected sequentially along the conveying direction with progressively increasing speeds; the weighing unit includes a feeding conveyor belt with a rotational speed greater than that of the last pulling conveyor belt of the differential speed pulling unit, and a weighing conveyor belt located downstream of the feeding conveyor belt for detecting the weight of the tart sticks; the unloading modules include a tart stick conveyor belt, a tray conveyor belt located below the tart stick conveyor belt, and a guide drive component for adjusting the orientation of the end of the tart stick conveyor belt so that the tart sticks fall into the tart stick trays on the tray conveyor belt; and limiting blocks for limiting the position of the tart stick trays are symmetrically arranged on both sides of the tray conveyor belt.

[0008] In some embodiments of this disclosure, the feeding conveying unit further includes positioning baffles symmetrically arranged on both sides of the feeding conveyor belt along the conveying direction of the feeding conveyor belt.

[0009] In some embodiments of this disclosure, trolley detectors are respectively fixedly installed above each stage of the tension conveyor belt.

[0010] In some embodiments of this disclosure, a guide rod is fixedly provided on one side of the differential tension unit, which is arranged along the conveying direction of the roller. A detector fixing frame for fixing the roller detector and whose number is consistent with the number of stages of the tension conveyor belt is slidably sleeved on the guide rod. The roller detector is a diffuse reflection sensor.

[0011] In some embodiments of this disclosure, the weighing conveyor belt includes a weighing sensor; the weighing unit further includes a feed detector located at the junction of the feeding conveyor belt and the weighing conveyor belt and used to detect the trolley; the feed sensor is a photoelectric sensor.

[0012] In some embodiments of this disclosure, the pallet conveyor belt includes a pallet feeding belt group with two pallet feeding belts arranged sequentially from upstream to downstream and symmetrically arranged, and a pallet traveling belt group with two pallet traveling belts arranged symmetrically arranged; the limiting blocks are symmetrically arranged at the two pallet feeding belts and the two pallet traveling belts; pallet limiting plates and pallet guide rollers are symmetrically arranged on both sides of the pallet traveling belt group.

[0013] In some embodiments of this disclosure, the end side of the tray limiting plate is provided with an flared bevel for guiding the tart tray; the tray guide roller is a V-shaped roller with a taper that corresponds to and matches the taper of the tray side.

[0014] In some embodiments of this disclosure, the unloading module further includes an infeed conveyor assembly and an outfeed conveyor assembly, which are respectively disposed perpendicular to the pallet conveyor belt on the input side and output side of the pallet conveyor belt.

[0015] In some embodiments of this disclosure, the infeed conveyor assembly and the outfeed conveyor assembly each include a plurality of rollers for driving the pallet movement; the end of the infeed conveyor assembly is provided with a baffle driven by a limiting cylinder to move vertically and to limit the pallet from entering the pallet conveyor belt; a pull belt assembly for guiding the pallet to move to the rollers of the outfeed conveyor assembly is provided between the rollers on the inlet side of the outfeed conveyor assembly; a guide belt assembly for moving vertically and correspondingly guiding the pallet to be placed at the pallet belt assembly is provided between the two pallet conveyor belts in the direction corresponding to the layout of the infeed conveyor assembly.

[0016] In some embodiments of this disclosure, the guide drive assembly includes a rotating plate correspondingly disposed on both sides of the tart conveyor belt, with a steering roller at one end connected to the tart conveyor belt and the other end hinged to the frame of the tart conveyor belt, and a drive motor fixedly disposed above the tart conveyor belt and pulsatorically connected to the rotating plate for driving the rotating plate to rotate to adjust the orientation of the end of the tart conveyor belt.

[0017] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. The differential tension unit can effectively increase the distance between each trolley, thereby ensuring that there is only one trolley on the weighing conveyor belt when the weighing unit is performing weighing operations, thus ensuring the reliability and accuracy of weighing.

[0018] 2. By driving the guide drive component to change the orientation of the end of the tart conveyor belt, when the weight of the current tart is within the dropping weight range of the current dropping component, the wire drive component causes the end of the tart conveyor belt to tilt, so that the tart falls into the tart tray below the tart conveyor belt.

[0019] 3. The limiting block fixed on the outer edge of the conveyor belt can form a positional interference and limiting relationship with the trolley tray, which can prevent the impact caused by the trolley falling into the trolley tray from causing the trolley tray to shift, thereby affecting the placement of the trolley in the trolley tray, and ensuring the relative stability of the position between the trolley tray and the conveyor belt. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the trolley weighing and sorting system in one embodiment of this application.

[0021] Figure 2 This is a schematic diagram of the structure of the tart roller feeding and conveying unit in one embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the differential speed control unit in one embodiment of this application.

[0023] Figure 4 This is a schematic diagram of the weighing unit in one embodiment of this application.

[0024] Figure 5 This is a partial structural schematic diagram of the material feeding module in one embodiment of this application.

[0025] Figure 6 This is a partial structural schematic diagram of the material feeding module from another state perspective in one embodiment of this application.

[0026] Figure 7 This is a schematic diagram of another part of the material feeding module in one embodiment of this application.

[0027] In the above figures, 1 is the trolley feeding and conveying unit, 11 is the feeding conveyor belt, 12 is the positioning baffle, 2 is the differential tension unit, 211 is the primary tension conveyor belt, 212 is the secondary tension conveyor belt, 213 is the tertiary tension conveyor belt, 22 is the trolley detector, 23 is the guide rod, 24 is the detector fixing frame, 241 is the sliding seat, 242 is the fixing rod, 3 is the weighing unit, 31 is the feeding conveyor belt, 32 is the weighing conveyor belt, 33 is the display and control unit, 34 is the feeding detector, 4 is the sorting unit, 41 is the trolley conveyor belt, 410 is the trolley conveyor belt frame, 411 is the rotating plate, 412 is the steering roller, 413 is the drive motor, and 414 is the commutator. 415 is the output shaft, 416 is the bearing housing, 417 is the drive disc, 418 is the power rod, 419 is the position sensor, 42 is the guide drive assembly, 43 is the pallet conveyor belt, 431 is the pallet feeding belt, 432 is the belt motor, 433 is the main shaft, 434 is the driven shaft, 435 is the guide belt, 436 is the moving plate, 437 is the power block, 438 is the guide plate, 44 is the inlet pallet conveyor assembly, 441 is the inlet pallet roller, 442 is the baffle, 45 is the outlet pallet conveyor assembly, 451 is the outlet pallet roller, 452 is the pallet pulling belt, 461 is the pallet traveling belt, 462 is the limit block, 463 is the horizontal plate, 464 is the pallet limit plate, and 465 is the pallet guide roller. Detailed Implementation

[0028] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0029] The programs involved or relied upon in the following embodiments are all conventional or simple programs in this technical field, and those skilled in the art can make conventional selections or adaptive adjustments according to specific application scenarios. Unless otherwise specified, the devices involved in the following embodiments are all conventional commercially available products.

[0030] To better understand the technical solution of this application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] To address the issues of low sorting efficiency and poor consistency in tart stick sorting due to significant human error in the current production process, see [reference needed]. Figure 1 This example discloses a tart stick weighing and sorting system, which consists of a tart stick feeding and conveying unit 1, a differential pulling unit 2, a weighing unit 3, and a sorting unit 4 with several unloading modules for sorting tart sticks according to the weighing information of the weighing unit 3, arranged sequentially from upstream to downstream.

[0032] Specifically, the tart stick feeding and conveying unit 1 is used to receive the pre-formed tart sticks and transport them downstream for weighing and sorting. In this embodiment, the feeding of the tart sticks into the feeding and conveying unit is done manually; in other embodiments, the tart sticks are fed by a conveyor belt from the upstream system. See also... Figure 2 In this embodiment, the tart-roller feeding and conveying unit 1 specifically includes a feeding conveyor belt 11 mounted on the frame, which the operator uses to... Figure 2 The completed tart sticks are sequentially placed on the left side of the tart stick loading and conveying unit 1 shown in the diagram. The loading conveyor belt 11 then sequentially conveys the tart sticks downstream for weighing. To prevent the tart sticks from falling or becoming excessively tilted due to their initial position being too far off from the central axis of the loading conveyor belt 11 or the angle between the tart stick and the conveying direction of the loading conveyor belt being non-perpendicular, thus affecting the downstream weighing process, in this embodiment, see... Figure 2 Positioning baffles 12 are symmetrically and parallelly set on both sides of the feeding conveyor belt 11. By adjusting the distance between the two positioning baffles 12 to match the length of the trolley, the trolley moving on the feeding conveyor belt 11 is limited, preventing it from falling during the conveying process. It can also provide a position reference for manual placement of the trolley, preventing the trolley from being placed too crookedly.

[0033] After the tart sticks are placed on the feeding conveyor belt 11, they are conveyed to the weighing unit 3 for weighing. However, considering that the spacing between adjacent tart sticks on the feeding conveyor belt 11 is affected by the manual placement operation, there are differences in the spacing between different tart sticks. This may cause multiple tart sticks with close spacing to enter the subsequent weighing unit 3 at the same time for weighing, which would make the weighing information unable to reflect the actual weight of each tart stick. Therefore, in order to ensure that the subsequent weighing unit weighs only one tart stick at a time, in this embodiment, a differential speed pulling unit 2 is connected downstream of the tart stick feeding conveyor unit 1. The differential speed pulling unit 2 increases the spacing between adjacent tart sticks, thereby avoiding the problem of multiple tart sticks entering the weighing unit at the same time due to excessively close spacing.

[0034] For details, see Figure 3 To increase the distance between adjacent rollers, in this embodiment, the differential speed tension unit includes several stages of tension conveyor belts connected sequentially along the conveying direction with progressively increasing speeds. In this example, three stages of tension conveyor belts are used. See [link / reference]. Figure 3 From left to right, the conveyor belts consist of a primary tension conveyor belt 211, a secondary tension conveyor belt 212, and a tertiary tension conveyor belt 213. The operating speeds of the primary tension conveyor belts 211 to 213 increase progressively. Specifically, the primary tension conveyor belt 211 on the left, which receives the pallets from the feeding conveyor belt 11, operates at the slowest speed, while the tertiary tension conveyor belt 213 on the right, which outputs the pallets, operates at the fastest speed. This progressively increasing speed across the multiple tension conveyor belts 211 gradually increases the distance between adjacent pallets, thus preventing the subsequent weighing unit from weighing multiple pallets simultaneously. Furthermore, in this embodiment, the conveying length of the tertiary tension conveyor belt 213 is greater than that of the other tension conveyor belts, thereby increasing the acceleration time of the pallets at the tertiary tension conveyor belt 213 and more effectively widening the distance between adjacent pallets.

[0035] See Figure 3In this example, each stage of the differential tension unit 2 is equipped with a trigger detector 22 above it. Specifically, a guide rod 23 is fixed to the differential tension unit frame on one side of the differential tension unit 2. The guide rod 23 is parallel to the conveying direction of the tension conveyor belt 21. In addition, several detector fixing frames 24 are slidably fitted at the guide rod 23. In this example, the detector fixing frame 24 includes a sliding seat 241 and a fixing rod 242 fixed to the sliding seat 241. The sliding seat 241 has a guide rod hole whose inner edge contour matches the outer edge contour of the guide rod 23. The sliding seat 241 slides and engages with the guide rod 23 through the guide rod hole. Then, the fixing rod 242 and the guide rod 23 are perpendicularly mounted above the tension conveyor belt through the sliding seat 241. In addition, the roller detector 22 is located at the end of the fixed rod, thereby enabling the roller detector 22 to be positioned above the tension conveyor belt 21. This facilitates monitoring of the rollers from above the tension conveyor belt 21 and avoids adverse interference from other components or structures. In this embodiment, the number of detector mounting brackets 24 is consistent with the number of stages of the tension conveyor belt 21. In this example, a total of three roller detectors are used, and the roller detectors specifically employ diffuse reflection sensors. Each roller detector 22 is mounted on the feed end of the corresponding stage of the tension conveyor belt via its corresponding detector mounting bracket 24, thereby accurately obtaining the number and position of rollers entering each stage of the tension conveyor belt, providing data support for the tension adjustment and roller statistics of the differential tension unit.

[0036] After the differential tension unit 2 increases the spacing between adjacent trolleys accordingly, see [link / reference]. Figure 1 Each tamper, spaced at a certain distance, enters weighing unit 3 sequentially for weighing. See details below. Figure 4 In this embodiment, the weighing unit 3 includes a weighing conveyor belt 32, and a weighing sensor is provided below the weighing conveyor belt 32. When a single trolley is fed into the weighing conveyor belt 32 and moves with it, the overall weight of the weighing conveyor belt 32 changes due to the weight of the trolley. This weight change can remain stable during the movement of the trolley with the weighing conveyor belt 32. This weight change is accurately sensed by the weighing sensor, thereby obtaining the weight of the trolley at the current weighing conveyor belt 32, and using this weighing weight as the basis for subsequent sorting.

[0037] In addition, see Figure 4In this example, the weighing unit 3 is also equipped with a display and control unit 33. Specifically, the display and control unit 33 includes a controller located inside the housing and a display screen that is communicatively connected to the controller. This controller serves as the control core of the trolley weighing and sorting system, and is communicatively connected to the differential tension unit, the weighing unit, and the subsequent sorting unit. It acquires data such as monitoring information from sensors within each unit and the operating information of the conveyor belt, thereby achieving effective control of the trolley weighing and sorting system. The display screen shows the weight information of the trolley currently placed on the weighing conveyor belt 32. Based on this display screen, the operating speed of each stage of the tension conveyor belt within the differential tension unit can be adjusted. Simultaneously, the weight sorting range of the trolleys in each unloading module within the subsequent sorting unit can be set to meet the on-demand sorting requirements for trolleys of different weights.

[0038] In this embodiment, to further ensure that the spacing between adjacent trolleys after output from the differential tension unit 2 and before entering the weighing conveyor belt 32 meets the requirement that only one trolley enters the weighing conveyor belt 32 at a time, see [reference needed]. Figure 4 In this example, the weighing unit 3 also includes a feeding conveyor belt 31 located upstream of and connected to the weighing conveyor belt 32. The operating speed of the feeding conveyor belt 31 is greater than the rotational speed of the final stage tension conveyor belt of the differential tension unit 2, i.e., the rotational speed of the third-stage tension conveyor belt 213. Thus, the feeding conveyor belt 31 further increases the distance between adjacent rollers before weighing, ensuring that only one roller is located on the weighing conveyor belt 32 during the weighing process, thus ensuring the validity and reliability of the weighing data. See also... Figure 4 In this embodiment, a feed detector 34 for detecting tart sticks is also fixedly provided on one side of the weighing unit 3. Specifically, the feed detector 34 is a photoelectric sensor. The feed detector 34 is located at the junction of the feeding conveyor belt 31 and the weighing conveyor belt 32. It counts the number of tart sticks entering the weighing conveyor belt 32 and triggers the weighing mode accordingly. This establishes a matching relationship between the current weighing weight and the corresponding number of tart sticks, so that the tart sticks of the corresponding weight can be accurately dropped in the sorting unit, and tart sticks within the same weight range can be grouped into the same tart stick tray.

[0039] After each tart stick is weighed sequentially by weighing unit 3, tart sticks belonging to the same weight range need to be sorted according to their weighing information. Therefore, in this example, a sorting unit 4 is connected downstream of weighing unit 3, as detailed below. Figure 1The sorting unit 4 includes several unloading modules connected in sequence along the same running direction. In this example, there are four unloading modules, and each unloading module has a preset corresponding unloading weight for the tart sticks. When the weight of the tart stick passing through the unloading module matches the preset unloading weight of the unloading module, the tart stick falls from the unloading module into the corresponding tart stick tray, thus realizing the sorting of tart sticks by weight.

[0040] Specifically, since the four blanking modules are structurally identical, we will take the uppermost blanking module as an example. (See below) Figure 5 The unloading module specifically includes a trolley conveyor belt 41 connected downstream of the weighing conveyor belt 32 of the weighing unit. The orientation of the end of the trolley conveyor belt 41 can be adjusted by the guide drive component 42. When the weight of the trolley meets the preset unloading requirements of the unloading module, the guide drive component drives the end of the trolley conveyor belt 41 to move downward, thereby disconnecting the connection between the trolley conveyor belt of the unloading module and the trolley conveyor belt of the next unloading module, so that the trolley running on the trolley conveyor belt falls into the trolley tray below the trolley conveyor belt 41. When the weight of the trolley does not meet the preset unloading requirements of the unloading module, the guide drive component drives the end of the trolley conveyor belt 41 to keep it horizontal, that is, to connect with the trolley conveyor belt of the next unloading module, so that the trolley continues to be conveyed until it reaches the unloading module that meets the unloading weight range including its weight, and then falls into the tray for collection.

[0041] To enable the guide drive assembly 42 to adjust the end of the trolley conveyor belt 41 as needed, see [link to relevant documentation]. Figure 5 In this embodiment, rotating plates 411 are respectively provided on both sides of the end of the trolley conveyor belt 41. One end of the rotating plate 411 is hinged to the trolley conveyor belt frame 410. Thus, under the drive of the guide drive assembly 42, the rotating plate 411 rotates around its hinge axis with the trolley conveyor belt frame 410, thereby realizing the adjustment of the orientation of the end of the trolley conveyor belt 41 as needed. In this example, the other side of the rotating plate 411 is also provided with a steering roller 412 for turning the belt of the trolley conveyor belt 41, so that the rotation of the rotating plate 411 does not affect the normal operation of the trolley conveyor belt 41.

[0042] See Figure 5In this embodiment, the guide drive assembly 42 specifically includes a drive motor 413 mounted on a fixed frame directly above the rotating plates 411 on both sides of the trolley conveyor belt 41. The drive motor 413 is located in the middle of the fixed frame, and a commutator 414 is fixedly installed in the middle of the fixed frame to achieve synchronous drive of the two rotating plates 411. In this example, the commutator 414 is a commutator reducer. The output shaft of the drive motor 413 is connected to the input end of the commutator 414, and the output end of the commutator 414 is connected to an output shaft 415 perpendicular to the trolley conveyor belt 41. The two ends of the output shaft 415 are fixed to the top of the fixed frame by bearing seats 416 to ensure the stability of the rotation of the output shaft 415. In addition, the two ends of the output shaft 415 are respectively connected to a drive disk 417, which is specifically a circular disk. The output shaft 415 is connected to the circular position of the drive disk, so that the drive disk 417 rotates with the rotation of the output shaft 415. See also Figure 5 A power rod 418 is hinged to the outer edge of the drive disk 417 near its circumference, and the other end of the power rod 418 is hinged to the rotating plate 411. Therefore, when the rotating plate 411 needs to move, the drive motor outputs a corresponding output to rotate the drive disk 417, thereby driving the hinged power rod 418 to move. When the hinge point between the power rod 418 and the drive disk 417 is at the top of the drive disk, the rotating plate 411 is lifted, and the end of the trolley conveyor belt 41 rotates horizontally; when the hinge point between the power rod 418 and the drive disk 417 is at the bottom of the drive disk, see... Figure 6 The rotating plate 411 is lowered, and the end of the trolley conveyor belt 41 rotates at an angle, so that the trolleys that are within the weight range of the material dropping module fall from here.

[0043] In addition, in order to enable the guide drive assembly 42 to operate at the appropriate time, in this embodiment, position sensors 419 are fixedly installed on both sides of the rotating plate 411. Specifically, in this example, two pairs of photoelectric sensors are used, which are symmetrically arranged on both sides of the rotating plate 411. When the corresponding trolley arrives, the light beam between the photoelectric sensors is blocked. After the trolley arrival signal is transmitted to the display control unit 33, the display control unit 33 controls the guide drive assembly 42 to perform the corresponding driving action according to the current weight information of the trolley, so that the trolley falls into the corresponding trolley tray at the unloading module that matches its unloading weight.

[0044] To catch the falling trolley, see Figure 7 In this example, each material unloading module also includes a pallet conveyor belt 43 located below the trolley conveyor belt 41. To make reasonable use of space, the input side and output side of the pallet conveyor belt 43 are respectively provided with an inlet conveyor assembly 44 and an outlet conveyor assembly 45 that are perpendicular to the running direction of the pallet conveyor belt 43.

[0045] Specifically, in this embodiment, the tray conveying assembly 44 is used to convey the tart tray (not shown in the figure) to the tray conveyor belt 43, so that tarts that meet the weight range of the corresponding unloading module can fall into the tart tray for collection. See figure. Figure 7 The tray conveying assembly 44 includes a plurality of tray conveying rollers 441 arranged in an equal-spaced array perpendicular to its conveying direction. The tray conveying rollers 441 are hinged to the frame plates on both sides of the tray conveying assembly, and the tray conveying rollers 441 are synchronously connected by transmission. Specifically, in this embodiment, the tray conveying rollers 441 are connected by chain transmission, so that the tray conveying rollers 441 rotate synchronously under the drive of the motor, thereby driving the trolley tray placed on top of each tray conveying roller 441 to move along the rotation direction of the tray conveying roller 441.

[0046] At the tray feeding assembly 44, as the tray feeding rollers 441 rotate, the tray continuously approaches the tray conveyor belt 43, which is arranged perpendicularly to the tray feeding assembly 44. Once the tray is completely positioned on the tray conveyor belt 43, it changes direction and continues to move in the same direction as the tray conveyor belt 41, thus facilitating the catching of tarts falling by weight from the tray conveyor belt 41. Specifically, in this embodiment, see... Figure 7 The pallet conveyor belt 43 has a pallet feeding belt assembly arranged along its conveying direction on its input side. Specifically, this pallet feeding belt assembly includes pallet feeding belts 431 symmetrically arranged on both sides of the input side of the pallet conveyor belt 43. These pallet feeding belts 431 are driven by a belt motor 432 located at the end of the pallet conveyor belt 43. The output end of the belt motor 432 is connected to a main shaft 433. (See also...) Figure 7 A slave shaft 434 is provided parallel to the main shaft 433, and the inner edge surface of the tray conveyor belt 431 is a toothed surface. Gears matching the inner edge toothed surface of the tray conveyor belt 431 are symmetrically provided on both sides of the main shaft 433 and the slave shaft 434, thereby enabling the belt motor 432 to drive the tray conveyor belt 431 to rotate between the main shaft and the slave shaft. The gear at the slave shaft is connected to a bearing between the slave shafts, allowing them to rotate relative to each other. Therefore, when the tart tray is placed between the two tray conveyor belts 431, the two conveyor belts can continue to drive the tart tray to change its conveying direction relative to the tray conveyor belt 43.

[0047] As the tart tray moves from the tray inlet conveyor assembly 44 to the tray conveyor belt 43, the contact between the tart tray and the tray inlet conveyor assembly 44 gradually decreases. This results in a gradual reduction in the pushing force provided by the tray inlet conveyor assembly 44 to the tart tray, which may prevent the tart tray from fully entering the tray conveyor belt 43, affecting the subsequent operation of the tart tray on the tray conveyor belt 43. Therefore, to ensure that the tart tray can smoothly achieve the position and power conversion from the tray inlet conveyor assembly 44 to the tray conveyor belt 43, in this example, a guide belt assembly is provided between the two tray conveyor belts 431 along the conveying direction of the tray inlet conveyor assembly 44 to guide the tart tray to be reliably placed at the tray conveyor belt assembly. See also Figure 7 The guide belt assembly includes several parallel guide belts 435, each of which is arranged in a direction perpendicular to the feed belt 431. Thus, as the trolley tray gradually approaches the tray conveyor belt 43 and the power obtained from the tray feeding assembly 44 gradually decreases, the guide belt assembly continues to provide power to the trolley tray, so that it can eventually be reliably placed at the two feed belts 431. To prevent friction between the tart tray and the conveyor belts 431 as the tart tray gradually approaches and is placed on top of the two conveyor belts 431 under the drive of the guide belt assembly, a movable plate 436 is horizontally arranged below the two conveyor belts 431 in this example, and each guide belt 435 is fixed relative to the movable plate 436. In addition, the movable plate 436 is also connected to a motor or cylinder that is fixed relative to the pallet conveyor frame. The motor or cylinder drives the movable plate 436 to move vertically, thereby driving each guide belt 435 to move vertically as needed. When the tart tray arrives, each guide belt 435 moves upward to a height exceeding the top surface of the two conveyor belts 431, thereby avoiding frictional contact between the tart tray and the conveyor belts 431. After the tart tray is completely placed between the two conveyor belts, it moves downward and retracts.

[0048] Once the trolley tray is fully positioned on the feed belt under the drive of the guide belt, to ensure that the feed belt 431 can reliably continue to drive the trolley tray, see [reference needed]. Figure 7 In this embodiment, a power block 437 is fixedly provided on the outer surface of the guide belt. Through the contact and positional interference between the power block 437 and the tart tray, slippage of the tart tray at the feed belt 431 can be effectively prevented. Additionally, to prevent excessive movement of the tart tray under the drive of the guide belt 435, see [reference needed]. Figure 7 In this example, the side of the tray conveyor belt 431 away from the tray conveyor assembly 44 is provided with a guide plate 438 that is fixedly arranged relative to the tray conveyor belt 43. This ensures that even if the guide belt 435 does not disconnect the drive of the tart tray in time, the guide plate 438 can limit the position of the tart tray, ensuring that the position of the tart tray can be accurately placed at the two tray conveyor belts 431.

[0049] See Figure 7 To avoid controlling the timing and quantity of tart trays entering the pallet conveyor belt 43, this example also provides a baffle 442 at the end of the pallet conveying assembly 44. This baffle is driven by a limiting cylinder located below the baffle 442 and fixed relative to the pallet conveying assembly 44, and moves as needed in the vertical direction. Thus, when the baffle 442 extends (e.g. Figure 7 (As shown in the diagram), the baffle 442 acts as a barrier to the tart tray being conveyed at the inlet conveyor assembly 44, restricting the tart tray from entering the pallet conveyor belt 43. When the baffle 442 descends vertically, the tart tray is no longer obstructed and enters the pallet conveyor belt 43, and then moves to the pallet delivery belt 431 under the drive of the synchronously rising guide belt assembly.

[0050] In addition, the pallet conveyor belt 43 also includes a pallet-carrying belt assembly connected downstream of the pallet delivery belt assembly. For details, see [link to details]. Figure 7 The tray conveyor belt assembly includes two symmetrically arranged tray conveyor belts 461. Similar to the drive of the tray delivery belt, the tray conveyor belts 461 are also driven by a motor, which will not be described in detail here. The tray conveyor belts 461 and the tray delivery belts 431 are connected at the shaft 434, where the driving force of the tart tray is converted from the tray delivery belt to the tray conveyor belt. Considering that the tart itself has a certain weight, and that it will cause a certain impact to the tart tray when it falls from the tart conveyor belt 41 into the tart tray, thus causing the tart tray to move relative to the tray conveyor belts 461, in this embodiment, limiting blocks 462 are symmetrically arranged on the outer edge surfaces of the two tray conveyor belts 461. Through the contact and positional interference between the limiting blocks 462 and the tart tray, the position of the tart tray is prevented from being affected by the impact of the falling tart. Thus, under the stepper drive of the tray conveyor belt motor, each tart moves step by step, so that each tart falls into the tart tray in sequence.

[0051] Considering the weight of the tart tray and the tarts themselves, the conveyor belt cannot stably support it. Therefore, see [reference needed]. Figure 7 In this example, a horizontal plate 463 is provided between the two conveyor belts 461, and this horizontal plate 463 is coplanar with the conveyor belts 461, thereby achieving load-bearing for the trolley tray. Additionally, to prevent the trolley tray from skewing during the driving motion of the conveyor belts 461, see [reference needed]. Figure 7 The conveyor belt assembly has symmetrically arranged pallet limiting plates 464 and pallet guide rollers 465 on both sides. The spacing between the pallet limiting plates 464 matches the width of the tart tray, ensuring the tart tray is limited within the space between the two limiting plates 464. In this example, the end sides of the pallet limiting plates have flared bevels to guide the tart tray. Furthermore, the pallet guide rollers in this example are V-shaped rollers with a taper that matches the taper of the pallet side. Thus, the contact between the pallet guide rollers and the side of the tart tray achieves clamping, guiding, and limiting of the tart tray.

[0052] The tart tray gradually collects and holds the tarts as the conveyor belt moves forward. Once full, it enters the outgoing conveyor assembly at point 45 for output to the next process. See also Figure 7 Similarly, in this example, the tray delivery assembly 45 includes tray delivery rollers 451 evenly spaced between the frames of the tray delivery assembly, used for conveying the tart trays in a direction perpendicular to the tray conveyor belt 43. The tray delivery rollers 451 are also linked by chain drive. To ensure that the tart trays, as they gradually lose belt drive, can smoothly fall onto the tray delivery rollers 451, see [reference needed]. Figure 7 In this example, a pull belt assembly is installed between each tray exit roller 451 at the output port of the tray conveyor belt 43. Specifically, the pull belt assembly includes several pull belts 452 disposed between the tray exit rollers 451. Similar to the guide belt assembly, the pull belts 452 in this example can also move vertically as needed, which will not be elaborated here. Similarly, the pull belt assembly can ensure that the trolley tray can be accurately and reliably placed at the tray exit conveyor assembly 45, realizing position and power conversion.

[0053] This tart stick weighing and sorting system can accurately weigh and sort tart sticks. Its sorting reliability is not affected by human factors, and its efficiency is greatly improved.

[0054] Although some preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0055] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of the invention. Therefore, if these modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A tart stick weighing and sorting system, characterized in that, It includes a tart rod feeding and conveying unit, a differential pulling unit, a weighing unit, and a sorting unit with several material dropping modules arranged sequentially from upstream to downstream. The tart stick feeding and conveying unit includes a feeding conveyor belt; the differential tension unit includes several tension conveyor belts connected sequentially along the conveying direction with progressively increasing speeds; the weighing unit includes a feeding conveyor belt with a rotational speed greater than that of the final tension conveyor belt of the differential tension unit, and a weighing conveyor belt located downstream of the feeding conveyor belt for detecting the weight of the tart sticks; the unloading module includes a tart stick conveyor belt, a tray conveyor belt located below the tart stick conveyor belt, and a guide drive component for adjusting the orientation of the end of the tart stick conveyor belt so that the tart sticks fall into the tart stick trays on the tray conveyor belt; the tray conveyor belt is symmetrically provided with limiting blocks on both sides for limiting the position of the tart stick trays.

2. The tart-roller weighing and sorting system according to claim 1, characterized in that, The feeding conveying unit also includes positioning baffles symmetrically arranged on both sides of the feeding conveyor belt along the conveying direction of the feeding conveyor belt.

3. The tart-roller weighing and sorting system according to claim 1, characterized in that, Each level of the tension conveyor belt is equipped with a trolley detector fixed above it.

4. The tart-roller weighing and sorting system according to claim 3, characterized in that, One side of the differential tension unit is fixedly provided with a guide rod arranged along the conveying direction of the roller. A detector fixing frame for fixing the roller detector and the number of such fixing frames are consistent with the number of stages of the tension conveyor belt are slidably sleeved on the guide rod. The roller detector is a diffuse reflection sensor.

5. The tart-roller weighing and sorting system according to claim 1, characterized in that, The weighing conveyor belt includes a weighing sensor; the weighing unit also includes a feed detector located at the junction of the feeding conveyor belt and the weighing conveyor belt and used to detect the treadmill; the feed detector is a photoelectric sensor.

6. The tart-roller weighing and sorting system according to claim 1, characterized in that, The pallet conveyor belt includes a pallet feeding belt group with two pallet feeding belts arranged sequentially from upstream to downstream and symmetrically arranged, and a pallet traveling belt group with two pallet traveling belts arranged symmetrically arranged; the limiting blocks are symmetrically arranged at the two pallet feeding belts and the two pallet traveling belts; pallet limiting plates and pallet guide rollers are symmetrically arranged on both sides of the pallet traveling belt group.

7. The tart-roller weighing and sorting system according to claim 6, characterized in that, The end side of the tray limiting plate is provided with an flared bevel for guiding the tart tray; the tray guide roller is a V-shaped roller with a taper that corresponds to and matches the taper of the tray side.

8. The tart-roller weighing and sorting system according to claim 6, characterized in that, The unloading module also includes an infeed conveyor assembly and an outfeed conveyor assembly, which are respectively perpendicular to the pallet conveyor belt and respectively located on the input side and output side of the pallet conveyor belt.

9. The tart-roller weighing and sorting system according to claim 8, characterized in that, The infeed conveyor assembly and the outfeed conveyor assembly each include a plurality of rollers for driving the movement of the pallet; the end of the infeed conveyor assembly is provided with a baffle driven by a limiting cylinder to move vertically and to limit the pallet from entering the pallet conveyor belt; between the rollers on the inlet side of the outfeed conveyor assembly, there is a pull belt assembly for guiding the pallet to move to the rollers of the outfeed conveyor assembly; between the two conveyor belts, corresponding to the layout direction of the infeed conveyor assembly, there is a guide belt assembly for moving vertically and correspondingly guiding the pallet to be placed at the conveyor belt assembly.

10. The tart-roller weighing and sorting system according to claim 1, characterized in that, The guide drive assembly includes a rotating plate corresponding to both sides of the tart conveyor belt, with a steering roller at one end connected to the tart conveyor belt and the other end hinged to the frame of the tart conveyor belt, and a drive motor fixed above the tart conveyor belt and connected to the rotating plate for driving the rotating plate to rotate and adjust the orientation of the end of the tart conveyor belt.

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