Tangyuan pressing device

Abstract

The application discloses a dumpling compression molding device, which mainly solves the technical problem of difficult demolding of the dumpling compression molding device. The powder scattering assembly scatters powder to prevent adhesion before the dumpling dough is compressed, and when the dumpling is compressed, the air cavity in the outer mold is used to introduce pressure air into the corresponding inner mold cavity of the inner mold, so that when the pressure air is discharged from the several air blowing holes at the inner mold head, the force for breaking the adhesion between the dumpling dough and the inner mold can be provided, and effective separation between the dumpling and the inner mold after compression molding is realized. In addition, the outer mold of the upper mold assembly is fixedly connected with the main driving plate by the positioning seat plate, so that when the compression molding is reset, the jamming problem caused by the assembly error between the inner mold and the outer mold can be effectively avoided, the mold jamming is avoided, the production efficiency is ensured, and the like.

Description

Technical Field

[0001] This application relates to the field of glutinous rice ball production equipment, specifically to a glutinous rice ball molding device. Background Technology

[0002] In traditional handmade glutinous rice balls, production relies entirely on the artisan's touch and experience. The process involves rolling the glutinous rice dough into a ball, manually shaping an indentation, filling it with filling, and then sealing and kneading it again. This method is inefficient, and the finished products are difficult to standardize in terms of size, shape, and filling content, making it particularly difficult to meet high-quality requirements. To improve production efficiency and product quality, current glutinous rice ball production uses mechanical molds to replace manual labor, achieving automated shaping. The glutinous rice ball forming mold typically consists of upper and lower molds. These molds can be engraved with various patterns, and the mold cavity controls the shape and outline of each glutinous rice ball. Under the control of the system, the glutinous rice ball production and pressing process can be carried out continuously and at high speed, greatly improving production efficiency.

[0003] For example, a patent document with publication number CN223274876U, known to the inventor, discloses a shaped glutinous rice ball forming device. The machine frame is equipped with a lower forming mold and a powder blowing mechanism. A transfer module is fitted with a conveyor section and an upper forming mold, which can be raised and lowered relative to the transfer module. The glutinous rice balls produced by the forming machine are conveyed by a conveyor belt and transferred by the transfer section, then the entire box of glutinous rice balls is placed in the lower forming mold. Finally, the upper forming mold is pressed down to shape the entire box of glutinous rice balls in one operation.

[0004] However, the inventors of this application discovered in the process of implementing the technical solution in the embodiments of this application that: because the pressed glutinous rice balls are glutinous rice dough with high water content and high viscosity, the molding process, especially when the glutinous rice balls are other irregular shapes, causes the mold cavity to stick to the glutinous rice balls, which makes demolding more difficult.

[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 glutinous rice ball molding device, which mainly solves the technical problem of difficult demolding of glutinous rice ball molding devices.

[0007] According to one aspect of this disclosure, a glutinous rice ball molding device is provided, comprising a frame, a molding die fixed relative to the frame and provided with an upper mold assembly and a lower mold assembly, a conveying assembly for conveying a glutinous rice ball tray containing the glutinous rice balls to be molded to the molding die and provided with a tray centering conveying unit and a mold entry / exit conveying unit sequentially from upstream to downstream, and a powdering assembly disposed above the conveying assembly at a position corresponding to the upstream position of the molding die; the lower mold assembly includes a lower mold whose top surface contour matches the outer edge contour of the glutinous rice ball tray; The upper mold assembly includes a main cylinder that is vertically arranged perpendicular to the lower mold and has a main drive plate fixed at its movable end, a slave cylinder that is vertically fixed to the main drive plate and has a slave drive plate fixed at its movable end, and an upper mold that is detachably fixed below the slave drive plate; the upper mold includes an outer mold that is fixed to the main drive plate and has a plurality of inner mold cavities respectively opened at the positions of each glutinous rice ball placement slot on the glutinous rice ball tray, an inner mold that is embedded in each of the inner mold cavities, and a pressure plate that is located at the top of the inner mold and is used to drive the inner mold to press vertically downward along the inner mold cavity.

[0008] In some embodiments of this disclosure, the tray centering conveying unit includes a conveyor belt and two limiting plates symmetrically disposed on both sides of the conveyor belt along the rotation direction of the conveyor belt; the distance between the two limiting plates matches the width of the glutinous rice ball tray.

[0009] In some embodiments of this disclosure, the mold conveying unit includes two synchronous belts symmetrically arranged on both sides of the centrally located pallet conveying unit and having a plurality of pallet pushers fixed at equal intervals on their outer edges; an inlet slide plate fixed relative to the frame and located between the conveyor belt and the lower mold; and an outlet slide plate fixed relative to the frame and located downstream of the lower mold. Guide slopes are provided at both ends of the inlet slide plate and at the end of the outlet slide plate near the lower mold. The pallet pushers between the two synchronous belts are symmetrically arranged, and in the initial state, any set of symmetrical pallet positioning members of the two synchronous belts are located at the corresponding position at the output end of the conveyor belt.

[0010] In some embodiments of this disclosure, the mold conveying unit further includes two guide plates symmetrically fixed at the inner positions of the two synchronous belts along the conveying direction of the synchronous belt and with a spacing matching the width of the glutinous rice ball tray; the distance between the two symmetrical tray pushers is less than the width of the glutinous rice ball tray.

[0011] In some embodiments of this disclosure, the lower mold has slots in the middle and / or on both sides, and a push assembly is fixedly provided below the lower mold relative to the frame; the push assembly includes a push plate correspondingly and movably embedded in the slots for lifting the glutinous rice ball tray at the lower mold, and a push cylinder fixed relative to the frame for driving the push plate to move vertically.

[0012] In some embodiments of this disclosure, the powder-sprinkling assembly includes support rods fixed to both sides of the conveying assembly, a vibrating spring limited and sleeved on the top of the support rods, a powder-sprinkling box fixed to the top of the support rods and with its bottom abutting against the vibrating springs, and a powder-sprinkling cylinder for driving the powder-sprinkling box to move along the direction of the support rods; the bottom of the powder-sprinkling box is provided with powder-sprinkling ports corresponding to the positions of each glutinous rice ball placement slot on the glutinous rice ball tray.

[0013] In some embodiments of this disclosure, the forming mold further includes a mold frame body that is fixed relative to the frame and has the main cylinder fixedly mounted on its top; the upper mold assembly further includes a plurality of main guide rods that are respectively inserted through the four corners of the main drive plate and arranged vertically and fixed relative to the mold frame body; the four corners of the secondary drive plate are respectively fixedly provided with secondary guide rods, and the corresponding positions of the main drive plate are respectively fixedly provided with guide cylinders that are coaxially matched and fitted with the secondary guide rods; the two sides of the upper mold are symmetrically provided with positioning seat plates that are fixedly connected to the main drive plate.

[0014] In some embodiments of this disclosure, a locking assembly is provided at the drive plate to fix the upper mold; the locking assembly includes a fixed plate fixed to one side of the drive plate and having an L-shaped cross-section, and an actuating plate disposed on the other side of the drive plate that is correspondingly telescopically adjustable along the plane of the drive plate; the upper mold includes a mounting plate correspondingly locked between the fixed plate and the actuating plate.

[0015] In some embodiments of this disclosure, a limiting boss is fixedly provided on the upper part of the inner mold, and an adjusting spring is provided on the outer sleeve of the inner mold, with its two ends respectively abutting against the pressure plate and the limiting bushing.

[0016] In some embodiments of this disclosure, the upper mold is provided with an air cavity that communicates with each of the inner mold cavities, and the top of the upper mold is fixed with an air outlet that communicates with the air cavity.

[0017] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. The powdering component is used to sprinkle powder on the glutinous rice dough before pressing to prevent sticking. During the pressing process, pressurized air is introduced into each inner mold cavity through the air inlet using the air cavity inside the outer mold. When the pressurized air is discharged from several air holes at the inner mold head, it provides the force to break the sticking between the glutinous rice dough and the inner mold, thereby ensuring the effective separation between the glutinous rice and the inner mold after pressing.

[0018] 2. The outer mold of the upper mold assembly is fixedly connected to the main drive plate by the positioning base plate. This can effectively avoid the problem of the inner mold and outer mold getting stuck due to assembly errors during the pressing and resetting process, thus preventing the relative position of the inner mold and outer mold from failing to reset. This also helps to ensure production efficiency and schedule. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the glutinous rice ball forming device in one embodiment of this application.

[0020] Figure 2 This is a partial structural diagram of the transmission unit in one embodiment of this application.

[0021] Figure 3 This is a partial structural schematic diagram of a forming mold in one embodiment of this application.

[0022] Figure 4 This is a partial structural diagram of the upper mold in one embodiment of this application.

[0023] Figure 5 This is a partial structural schematic diagram of the powder-spraying component in one embodiment of this application.

[0024] Figure 6 This is a schematic diagram of the lower mold assembly in one embodiment of this application.

[0025] In the above figures, 1 is the frame, 21 is the pallet centering conveyor unit, 211 is the transmission belt, 212 is the limiting plate, 213 is the vertical fixing plate, 22 is the mold inlet / outlet conveyor unit, 221 is the inlet slide plate, 222 is the outlet slide plate, 223 is the timing belt, 224 is the pallet pusher, 225 is the guide plate, 226 is the pallet sensor frame, 3 is the powder spreading assembly, 31 is the powder spreading box, 311 is the wing plate, 32 is the support rod, 33 is the vibration spring, and 34 is the... 4 is a cylinder support, 40 is a forming mold, 41 is a mold frame, 41 is a lower mold assembly, 411 is a lower mold, 412 is a slot, 413 is a push seat, 414 is a push plate, 415 is a push cylinder, 416 is a position sensor, 42 is an upper mold assembly, 421 is a main guide rod, 422 is a main cylinder, 423 is a main drive plate, 4231 is a slide, 424 is an outer mold, 425 is an inner mold, 4251 is a limiting boss, 4252 is an adjusting spring, 426 is a pressure plate, 427 is a positioning seat plate, 428 is a slave cylinder, 429 is a slave drive plate, 430 is a slave guide rod, 431 is a guide cylinder, 432 is a mounting plate, 433 is an air inlet, and 434 is a fixing plate. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] To address the problem of difficult demolding in existing glutinous rice ball molding devices, this example discloses a glutinous rice ball molding device, see [link to relevant documentation]. Figure 1 The device includes a frame 1 with casters at the bottom for easy movement of the glutinous rice ball forming device. A conveyor assembly is fixed to one side of the frame 1, and a forming mold 4 is fixed to the other side. The conveyor assembly transports a tray containing the glutinous rice balls to be formed to the forming mold 4 for forming. To reduce adhesion between the dough and the mold during forming, a flour-sprinkling assembly 3 is installed upstream of the forming mold 4. This assembly evenly sprinkles flour onto the surface of the glutinous rice balls to reduce adhesion.

[0030] For details, see Figure 1 and Figure 2 In this embodiment, the conveying component specifically includes a pallet centering conveying unit 21 and an in-and-out mold conveying unit 22 located downstream of the pallet centering conveying unit 21.

[0031] In this design, considering that the glutinous rice ball shaping device needs to receive the glutinous rice ball trays containing the dough to be shaped from the previous process, and that the shaping mold 4 is relatively fixed in position when shaping each dough ball in the tray, it is necessary to ensure that each glutinous rice ball tray is centered when it is fed into the tray. Therefore, a tray centering conveyor unit 21 is provided to receive the glutinous rice ball trays and ensure that each tray is conveyed along the same straight line while the device is feeding the trays. For details, see [link to details]. Figure 2In this example, the tray-centered conveying unit includes a motor-driven conveyor belt 211. The tray containing the dough to be pressed falls onto the surface of the conveyor belt 211 and is conveyed as the belt rotates. Additionally, two symmetrical limiting plates 212 are provided on both sides of the conveyor belt 211. These plates are parallel to each other and arranged along the conveying direction of the conveyor belt 211. The contact between the limiting plates 212 and the sides of the glutinous rice ball trays ensures that each tray moves along the same straight line. The limiting plates on both sides are fixed to the frame by corresponding vertical fixing plates 213. To enable the pallet centering conveyor unit 21 to adapt to glutinous rice ball pallets of different widths and provide flexibility in use, in this embodiment, the outer sides of the two limiting plates 212 are provided with screws perpendicular to the limiting plates 212. These screws are correspondingly perpendicularly inserted into the top of the vertical fixing plate 213. By adjusting the length of the screws extending out of the vertical fixing plate 213, the relative position and spacing of the two limiting plates 212 can be adjusted to ensure the control of the position of the glutinous rice ball pallet on the conveyor belt, so that the centerline of the glutinous rice ball pallet conveyed along the conveyor belt 211 is collinear with the centerline of the forming mold; and by adjusting the spacing between the two limiting plates 212, it can adapt to glutinous rice ball pallets of different widths.

[0032] When pressing glutinous rice balls, the dough needs to be placed between the upper mold assembly and the lower mold assembly of the pressing mold 4. Obviously, the glutinous rice ball tray placed on the conveyor belt cannot be closed by the upper mold assembly and the lower mold assembly due to the interference of the conveyor belt. Therefore, in this embodiment, the conveying assembly also includes an in-mold conveying unit 22, which transports the glutinous rice ball tray from the conveyor belt to the pressing mold 4, and after pressing is completed, the glutinous rice ball tray is transported to the next process.

[0033] For details, see Figure 2In this embodiment, the mold conveying unit 22 specifically includes an infeed slide plate 221 located upstream of the lower mold assembly 41 and an outfeed slide plate 222 located downstream of the lower mold assembly 41. The infeed slide plate 221 and the outfeed slide plate 222 are arranged parallel to each other in the same plane and are fixed relative to the frame. Their arrangement height is higher than the top surface of the lower mold assembly 41, so that when the glutinous rice ball tray moving along the infeed slide plate 221 reaches the lower mold assembly 41, it falls into the lower mold assembly 41 by its own gravity due to the height difference. Furthermore, in order to effectively drive the glutinous rice ball tray to move along the corresponding slide plates on the top surfaces of the infeed slide plate 221 and the outfeed slide plate 222, in this embodiment, the mold conveying unit 22 also includes symmetrical and parallel synchronous belts 223 arranged on both sides of the infeed slide plate 221 and the outfeed slide plate 222. Several tray pushing members 224 are fixedly fixed at equal intervals on both synchronous belts. Specifically, in this example, the pallet pushers 224 of the two synchronous belts are symmetrically arranged, that is, the pallet pushers 224 on one side of the synchronous belt correspond one-to-one with the pallet pushers on the other side of the synchronous belt, and the line connecting the two is perpendicular to the conveying direction of the synchronous belt; in addition, the distance between the corresponding pallet pushers 224 at the two synchronous belts 223 is less than the width of the glutinous rice ball pallet, thereby limiting the glutinous rice ball pallet by the corresponding group of pallet pushers 224, and thus, based on the contact between the pallet pushers 224 and the glutinous rice ball pallet, the glutinous rice ball pallet is driven to move along the inlet slide plate 221 and the outlet slide plate 222 by the power of the synchronous belt.

[0034] To achieve effective coordination of the power supply for conveying the glutinous rice ball trays between the tray centering conveyor unit 21 and the mold entry / exit conveyor unit 22, that is, to ensure that the glutinous rice ball trays are effectively received and continued to be driven by the mold entry / exit conveyor unit 22 after being output from the tray centering conveyor unit 21, see [link to relevant documentation]. Figure 2 In this example, the synchronous belt 223 is also located on both sides of the conveyor belt 211 and overlaps with the conveying range of the conveyor belt 211 by a certain length. Thus, after the glutinous rice ball tray moves to the end of the conveyor belt, the tray pusher 224 at the synchronous belt contacts the glutinous rice ball tray, thereby giving the glutinous rice ball tray power to continue moving forward and along the tray inlet slide 221, thereby realizing the connection of driving force between the tray centering conveyor unit 21 and the mold inlet / outlet conveyor unit 22.

[0035] Furthermore, to facilitate the smooth entry of the glutinous rice ball tray into the infeed slide plate 221 and the outlet slide plate 222, and to ensure the tray slides smoothly into the lower mold assembly 41, in this embodiment, guide ramps are provided at both ends of the infeed slide plate 221 and on the end of the outlet slide plate 222 near the lower mold assembly 41. These guide ramps guide the movement of the glutinous rice ball tray, preventing jamming. Additionally, to prevent the glutinous rice ball tray from shifting while moving along the infeed slide plate 221 and the outlet slide plate 222, see [reference needed]. Figure 2In this example, guide plates 225 are symmetrically arranged on the inlet slide 221, the outlet slide 222, and both sides along the conveying direction of the synchronous belt 223. The two guide plates 225 are respectively located on the inner side of the two synchronous belts 223, and the distance between the two guide plates 225 matches the width of the glutinous rice ball tray. This allows for limiting the movement of the glutinous rice ball tray through the contact between the two guide plates 225 and the sides of the tray. In this example, the end of the guide plate 225 near the conveyor belt extends into the conveyor belt's running area, and a guide wire bevel is provided at the end of this side of the guide plate 225 to guide the glutinous rice ball tray between the two guide plates 225. Furthermore, a tray sensor is fixedly installed above the end of the conveyor belt via a tray sensor frame. In this example, the tray sensor is specifically a photoelectric sensor, used to detect whether a glutinous rice ball tray has arrived at the end of the conveyor belt, thereby corresponding to the stepping synchronous belt and driving the glutinous rice ball tray.

[0036] Driven by the tray pushers fixed at the synchronous belts on both sides, the glutinous rice ball tray moves along the infeed slide plate 221 until it falls into the lower mold assembly 41, where the glutinous rice balls are then formed by the forming mold. Specifically, in this embodiment, see... Figure 3 The forming mold includes a lower mold assembly 41 and an upper mold assembly 42. The upper mold assembly 42 is fixed to the machine frame 1 via the mold frame 40 and is positioned directly above the lower mold assembly 41 in the vertical direction. Thus, by driving the upper mold assembly 42 to press vertically downward and contact the glutinous rice ball tray placed at the lower mold assembly 41, the top surface of each dough ball in the glutinous rice ball tray is formed.

[0037] Specifically, in this example, the upper mold assembly 42 includes an upper mold for contacting the glutinous rice ball dough to press patterns. Considering that the glutinous rice ball dough is a three-dimensional object with a curved or other irregular surface, it is necessary to limit its position during the pressing process. This is to prevent the dough from shifting due to pressure during pressing, and also to prevent lateral deformation caused by vertical forces. Therefore, in this embodiment, see... Figure 3 and Figure 4 The upper mold includes an outer mold 424 and several inner molds 425. The outer mold 424 has several inner mold cavities arranged in an array, and the position of each inner mold cavity matches the placement slots of the glutinous rice balls on the glutinous rice ball tray. The inner molds 425 are movably embedded in each inner mold cavity and move vertically along the inner mold cavity. A mold head is fixed at the end of each inner mold 425 where it is embedded in the inner mold cavity. The mold head is used to contact the end face of the glutinous rice ball dough, which is engraved with the desired pattern. Therefore, during the glutinous rice ball molding process, the cavity wall of the inner mold cavity can precisely limit the glutinous rice ball dough. As the inner mold is pressed down, the mold head at the end of the inner mold contacts the glutinous rice ball dough, thereby pressing the pattern on the top surface of the glutinous rice ball. Furthermore, since the glutinous rice ball dough is enclosed within the inner mold cavity, the cavity wall of the inner mold cavity can limit the sides of the glutinous rice ball dough, preventing it from deforming under stress and affecting the quality of the glutinous rice ball molding.

[0038] However, considering the volume and quality variations in glutinous rice ball dough, resulting in inconsistent sizes of glutinous rice balls within the same tray, if all inner molds 425 apply uniform pressure and amplitude in this scenario, excessively large glutinous rice balls may be over-pressed, while smaller ones may fail to develop their desired patterns or have unclear shapes. Therefore, see [link to relevant documentation]. Figure 4 Each inner mold 425 includes a mold rod and a mold head fixed to the end of the mold rod and located in the inner mold cavity. In this embodiment, a pressure plate 426 parallel to the outer mold 424 is provided. The pressure plate 426 has through holes at the positions corresponding to the inner molds 425. Each inner mold 425 is movably inserted into the through hole of the pressure plate 426, and a nut or bushing is fixed at the end of the inner mold 425, so that the pressure plate 426 can be inserted outside each inner mold 425. Furthermore, see... Figure 4 Each inner mold 425 has a fixed limiting boss 4251 on its upper part. In this example, the limiting boss 4251 is specifically a bushing fixed outside the inner mold rod. In addition, each inner mold rod is also fitted with an adjusting spring 4252. The two ends of the adjusting spring 4252 abut against the pressure plate 426 and the limiting boss 4251, respectively. Thus, when the pressure plate 426 is pressed down, the adjusting spring 4252 at each inner mold 425 undergoes different degrees of elastic deformation, thereby adapting to different sizes of glutinous rice ball dough. That is, when pressing large-volume glutinous rice balls, the adjusting spring deforms significantly, and when pressing small-volume glutinous rice balls, the adjusting spring deforms slightly, ensuring the effect of glutinous rice ball pressing.

[0039] To achieve a smooth and reliable downward pressing of the upper mold assembly 42, see [link to relevant documentation]. Figure 3 Several main guide rods 421 are fixedly installed vertically between the top and bottom plates of the mold frame 40. In this example, there are four main guide rods 421, distributed at the four corners of the mold frame 40. In addition, a main cylinder 422 is fixedly installed at the top of the mold frame 40, and a main drive plate 423 is fixedly installed at the movable end of the main cylinder 422. The four corners of the main drive plate 423 are respectively fixed with slide blocks 4231 that slide through the main guide rods 421. Thus, driven by the main cylinder 422, the main drive plate 423 can move smoothly vertically along the main guide rods 421, thereby realizing the vertical movement of the upper mold assembly 42. This allows the upper mold assembly 42 to press down and cooperate with the lower mold assembly 41 to complete the glutinous rice ball molding operation.

[0040] However, through long-term practice and research, the inventors discovered that, because the inner mold 425 is correspondingly embedded in the inner mold cavity of the outer mold 424, due to mold processing errors, assembly errors, and wear, the inner mold is difficult to move upward and detach from the outer mold after being pressed down to achieve reset, thus affecting the pressing process in the next cycle. Therefore, the outer mold 424 is fixed relative to the main drive plate 423. Specifically, in this embodiment, see... Figure 3Positioning plates 427 are symmetrically fixed on both sides of the outer mold 424, fixing the positions of the outer mold 424 and the main drive plate 423 relative to each other. Furthermore, a driven cylinder 428 is fixedly installed on the main drive plate 423. To avoid positional interference between the driven cylinder 428 and the top plate of the mold frame 40, a motor window is provided on the mold frame 40 corresponding to the position of the driven cylinder 428. In addition, a driven drive plate 429 is fixedly installed at the movable end of the driven cylinder 428, and the upper mold is fixed to the bottom of the driven drive plate 429. Thus, by driving the driven cylinder 428 to vertically press down the driven drive plate 429, the pressure plate 426 of the upper mold is pressed down, correspondingly driving the inner mold to shape the glutinous rice ball. To ensure that the driven drive plate 429 can move smoothly vertically, see [reference needed]. Figure 3 In this example, guide rods 430 are fixedly installed vertically at the four corners of the drive plate 429, and guide rod holes are opened at the positions of the main drive plate 423 corresponding to the positions of the guide rods 430. Guide cylinders 431 are fixedly installed at each guide rod hole. The guide cylinders 431 are coaxially and movably embedded outside the guide rods 430, thereby limiting the movement of the guide rods 430 and ensuring the stability of the vertical movement of the drive plate 429.

[0041] Additionally, to achieve the connection between the upper mold and the drive board, see [link / reference]. Figure 4 In this example, the upper mold also includes a mounting plate 432 fixedly connected to the pressure plate. After the mounting plate 432 is fixedly connected to the driven plate 429, during the glutinous rice ball molding process, the main cylinder 422 drives the main drive plate 423 downwards. The driven cylinder 428, driven plate 429, and upper mold, all fixed to the main drive plate 423, move downwards vertically accordingly. In this example, the molding die also includes a position sensor for detecting the running position of the main drive plate. When the position sensor detects that the running position of the main drive plate satisfies the contact between the outer mold and the lower mold assembly, the action of the main cylinder 422 stops. At this time, the driven cylinder 428 is activated, driving the driven plate 429 downwards. During the downward pressing process, the driven plate 429 drives the pressure plate 426 downwards. After the downward pressure of the pressure plate is adjusted by an adjusting spring, each inner mold achieves the molding of the top surface of each glutinous rice ball dough in the glutinous rice ball tray. After the molding is completed, the inner mold is retrieved from the cylinder 428 and extracted from the inner mold cavities of the outer mold. At this time, since the outer mold is fixedly connected to the main drive plate, the inner mold is driven upward by the cylinder, thus eliminating the problem of jamming between the inner mold and the outer mold.

[0042] To prevent the inner mold from sticking to the glutinous rice ball dough during contact, please refer to [the relevant instructions]. Figure 1 In this example, before the glutinous rice balls enter the molding die, a powdering component 3 positioned above the conveying assembly sprinkles powder onto the surface of the rice balls to prevent them from sticking. For details, see [link to details]. Figure 5In this example, the powder-sprinkling component includes a powder-sprinkling box 31 placed directly above the conveying component. The powder-sprinkling box 31 is used to hold flour, and at the bottom of the powder-sprinkling box 31, there are powder-sprinkling nozzles that match the positions of the glutinous rice balls in the tray. A sieve is provided at the powder-sprinkling nozzles, so that the powder in the powder-sprinkling box can be sprinkled relatively accurately onto each glutinous rice ball dough through each powder-sprinkling nozzle, thereby minimizing the amount of powder falling into other positions on the glutinous rice ball tray. In this embodiment, since a sieve is used at the powder-sprinkling opening, the powder in the powder-sprinkling box is sprinkled from directly above the glutinous rice ball tray as needed. In this embodiment, the powder-sprinkling box 31 is mounted above the conveying assembly by vertically arranged support rods 32 fixed to both sides of the conveying assembly. Each support rod 32 has a limiting sleeve on its top, and specifically, in this embodiment, the top of the support rod 32 has a screw hole with a vertically arranged screw threaded into it. The shaking spring 33 is sleeved on the outside of the screw. Simultaneously, the powder-sprinkling box 31 has wing plates 311 on both sides, and the screw passes through the wing plates of the powder-sprinkling box. This causes one end of the shaking spring 33 to abut against the wing plate of the powder-sprinkling box, and the other end to abut against the end of the support rod 32. Additionally, a cylinder bracket 34 is fixed between the two support rods on the same side, and a powder-sprinkling cylinder is fixed at this cylinder bracket 34. Figure 5 (Not shown in the image). The actuating end of the powder-spreading cylinder abuts against the wing plate of the powder-spreading box. When powder spreading is required, the powder-spreading cylinder reciprocates, pushing the wing plate 311 of the powder-spreading box downward when the powder-spreading cylinder extends. When the powder-spreading cylinder retracts, the vibrating spring 33 releases the elastic potential energy stored in it as the wing plate 311 is pressed down, pushing the wing plate 311 upward. This causes the powder-spreading box to vibrate at a high frequency in the vertical direction for a short time, thereby achieving the spreading of powder from the powder-spreading nozzle.

[0043] Sprinkling flour on the glutinous rice ball dough before molding can reduce the sticking between the upper mold and the dough to some extent, but it still cannot completely solve the sticking problem. Therefore, in this embodiment, an air cavity is provided between each inner mold cavity of the outer mold 424 to connect the inner mold cavities, see [link to relevant documentation]. Figure 4 An air inlet 433, connected to the internal air cavity, is provided at the top of the outer mold 424. Simultaneously, several small-diameter air holes are provided at the mold head of the inner mold for contacting the glutinous rice dough; in this example, the diameter of the air holes is less than 1 mm. Thus, during demolding, the air inlet 433 is connected to the air source. At this time, pressurized gas enters each inner mold cavity through the air cavity inside the outer mold. Because the upper part of the inner mold cavity is fitted with the mold rod, making it relatively closed, and the lower part of the inner mold cavity is fitted with the mold head, also making it relatively closed, the gas in the inner mold cavity is discharged through the air holes, assisting the glutinous rice dough in separating from the inner mold and preventing sticking.

[0044] Furthermore, in this embodiment, to facilitate the replacement of the forming mold and enable it to press different patterns, thereby improving the flexibility of the device, the mounting plate 432 of the upper mold and the drive plate 429 are movably connected in this embodiment. Therefore, only the upper mold needs to be replaced to achieve convenient and quick replacement of the pattern of the upper mold assembly, without the need to replace the entire forming mold. See also Figure 4 In this example, a locking assembly is used to achieve the movable locking between the mounting plate 432 and the driven plate 429. Specifically, the locking assembly includes a fixing plate 434 located on the bottom surface of one side of the driven plate 429. In this example, the fixing plate 434 has an L-shaped cross-section, and the height of the gap formed between it and the driven plate 429 matches the thickness of the mounting plate 432. In addition, an indexing pin is provided between the fixing plate 434 and the driven plate 429 to achieve precise positioning and reliable locking between the fixing plate and the driven plate. An actuating plate 435 is provided on the other side of the driven plate 429, and bolt holes are provided on the side of the driven plate 429 corresponding to the actuating plate 435. The actuating plate 435 is connected to the bolt holes by bolts, thereby achieving effective and stable clamping of the upper mold mounting plate. The mounting plate 432 has a beveled end on one side corresponding to the actuating plate 435. The actuating plate 435 also has a beveled end that matches the slope of the mounting plate 432. Thus, the two beveled ends of the actuating plate and the mounting plate are coordinated to ensure that the mounting plate can be stably clamped by the clamping assembly.

[0045] The upper mold component allows for shaping the top of the glutinous rice ball dough. For shaping the bottom of the glutinous rice ball, please refer to [link / reference needed]. Figure 3 and Figure 6 The molding die also includes a lower mold assembly 41. Specifically, in this embodiment, the lower mold assembly 41 includes a lower mold 411 located directly below the upper mold and whose top surface contour matches the bottom contour of the glutinous rice ball tray. The bottom texture of each glutinous rice ball placement slot on the glutinous rice ball tray is consistent with the top surface texture of the lower mold, so that the glutinous rice ball tray can be precisely placed on the lower mold 411. Thus, the lower mold 411 provides support force to the glutinous rice ball tray, so that when the upper mold assembly presses down, the bottom texture of each glutinous rice ball placement slot on the glutinous rice ball tray is used to shape the bottom of the glutinous rice ball dough.

[0046] After the glutinous rice ball shaping process is completed, see Figure 2 The glutinous rice ball tray needs to be moved from the lower mold assembly 41 to the ejector slide 222, and then driven by a synchronous belt to be output along the ejector slide to the next process. For this purpose, see [link to relevant documentation]. Figure 6The lower mold 411 is fixed at a certain height by a bracket. The lower mold 411 has slots 412 on its middle and sides along its length. A pusher assembly lifts the glutinous rice ball tray through the slots 412 and moves it to the ejector slide under the drive of a synchronous belt. Specifically, the pusher assembly includes a pusher seat 413 located below the lower mold 411 and parallel to it. Several pusher plates 414 corresponding to the slots 412 are vertically fixed to the top surface of the pusher seat 413. A pusher cylinder 415, fixed relative to the mold frame 40, is located at the bottom of the pusher seat 413. The movable end of the pusher cylinder 415 is fixedly connected to the bottom surface of the pusher seat 413. Thus, after the pusher cylinder 415 extends, the pusher seat 413 moves vertically upward, causing the pusher plates to extend from the corresponding slots, thereby lifting the glutinous rice ball tray. In order to determine the extension distance of the push cylinder 415, a distance sensor 416 is provided on one side of the push cylinder 415. In this example, the distance sensor is specifically a position sensor and is set towards the push seat 413 to monitor the movement range of the push seat 413, thereby serving as the basis for the movement of the push cylinder 415.

[0047] 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 utility model.

[0048] 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 dumpling pressing device, characterized in that, The system includes a frame, a forming mold fixed relative to the frame and equipped with an upper mold assembly and a lower mold assembly, a conveying assembly for conveying a tray containing glutinous rice balls to be formed to the forming mold and having a tray centering conveying unit and a mold entry / exit conveying unit sequentially from upstream to downstream, and a powdering assembly located above the conveying assembly at an upstream position corresponding to the forming mold; the lower mold assembly includes a lower mold whose top surface contour matches the outer edge contour of the glutinous rice ball tray; the upper mold assembly includes a main cylinder vertically arranged perpendicular to the lower mold and having a main drive plate fixed at its movable end, a slave cylinder vertically fixed to the main drive plate and having a slave drive plate fixed at its movable end, and an upper mold detachably fixed below the slave drive plate; the upper mold includes an outer mold fixed to the main drive plate and having several inner mold cavities respectively opened at the positions of each glutinous rice ball placement slot on the glutinous rice ball tray, an inner mold embedded in each of the inner mold cavities, and a pressure plate located at the top of the inner mold and used to drive the inner mold to press vertically downward along the inner mold cavity.

2. The dumpling pressing device according to claim 1, wherein, The tray centering conveyor unit includes a conveyor belt and two limiting plates symmetrically arranged on both sides of the conveyor belt along the rotation direction of the conveyor belt; the distance between the two limiting plates matches the width of the glutinous rice ball tray.

3. The dumpling pressing device according to claim 2, wherein, The mold conveying unit includes two synchronous belts symmetrically arranged on both sides of the central pallet conveying unit and with several pallet pushers fixed at equal intervals on their outer edges; an inlet slide plate fixed relative to the frame and located between the conveyor belt and the lower mold; and an outlet slide plate fixed relative to the frame and located downstream of the lower mold. Guide slopes are provided at both ends of the inlet slide plate and at the end of the outlet slide plate near the lower mold. The pallet pushers between the two synchronous belts are symmetrically arranged, and in the initial state, any set of symmetrical pallet positioning members of the two synchronous belts are located at the corresponding position at the output end of the conveyor belt.

4. The dumpling pressing device according to claim 3, wherein, The mold conveying unit also includes two guide plates that are symmetrically fixed at the inner side of the two synchronous belts along the conveying direction of the synchronous belt and whose spacing matches the width of the glutinous rice ball tray; the distance between the two symmetrical tray pushers is less than the width of the glutinous rice ball tray.

5. The dumpling pressing device according to claim 1, wherein, The lower mold has slots in the middle and / or on both sides, and a push assembly is fixedly provided below the lower mold relative to the frame; the push assembly includes a push plate that is movably embedded in the slots for lifting the glutinous rice ball tray at the lower mold, and a push cylinder that is fixed relative to the frame for driving the push plate to move vertically.

6. The dumpling pressing device according to claim 1, wherein, The powder-sprinkling assembly includes support rods fixed to both sides of the conveying assembly, a vibrating spring limited and sleeved on the top of the support rods, a powder-sprinkling box fixed to the top of the support rods and with its bottom abutting against the vibrating springs, and a powder-sprinkling cylinder for driving the powder-sprinkling box to move along the direction of the support rods; the bottom of the powder-sprinkling box is provided with powder-sprinkling ports corresponding to the positions of each glutinous rice ball placement slot on the glutinous rice ball tray.

7. The dumpling pressing device according to claim 1, wherein, The forming mold also includes a mold frame body that is fixed relative to the frame and has the main cylinder fixed on its top; the upper mold assembly also includes a plurality of main guide rods that are respectively inserted through the four corners of the main drive plate and arranged in the vertical direction and fixed relative to the mold frame body; the four corners of the secondary drive plate are respectively fixed with secondary guide rods, and the corresponding positions of the main drive plate are respectively fixed with guide cylinders that are coaxially matched and fitted with the secondary guide rods; the two sides of the upper mold are symmetrically provided with positioning base plates for fixed connection with the main drive plate.

8. The dumpling pressing device according to claim 1, wherein, The drive plate is provided with a locking assembly for fixing the upper mold; the locking assembly includes a fixed plate fixed to one side of the drive plate and having an L-shaped cross section, and an actuating plate located on the other side of the drive plate that is telescopically adjustable along the plane of the drive plate; the upper mold includes a mounting plate that is correspondingly locked between the fixed plate and the actuating plate.

9. The dumpling pressing device according to claim 1, wherein, The upper part of the inner mold is fixedly provided with a limiting boss, and the outer sleeve of the inner mold is provided with an adjusting spring at both ends that abuts against the pressure plate and the limiting bushing, respectively.

10. The dumpling pressing device according to claim 1, wherein, The upper mold is provided with an air cavity that communicates with each of the inner mold cavities, and an air outlet that communicates with the air cavity is fixed on the top of the upper mold.

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