Intelligent weighing device suitable for frozen conditioning products and weighing method thereof

Abstract

The invention discloses an intelligent weighing device suitable for frozen conditioning products and a weighing method thereof, and belongs to the technical field of frozen conditioning product weighing, the intelligent weighing device comprises an annular conveying belt, a plurality of weighing mechanisms are uniformly arranged on the surface of the conveying belt in the length direction, and each weighing mechanism comprises a mounting box fixed on the surface of the conveying belt; a rotatable weighing table is fixed to the top of the mounting box, a weighing plate is arranged on the weighing table, a weighing sensor is mounted between the weighing plate and the bottom wall of the weighing table, a controller is mounted in the mounting box, and the controller is electrically connected with the weighing sensor; sliding grooves are formed in the two side walls of the weighing platform, and sliding blocks are slidably connected into the sliding grooves. According to the invention, while precise weighing is realized, ice crystals and condensed water remaining on the weighing device due to weighing are removed, humidity is effectively reduced, bacterial breeding is reduced, weighing precision is ensured, automatic and efficient intelligent weighing is realized, and food safety and production efficiency are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of weighing of frozen prepared foods, and particularly relates to an intelligent weighing device suitable for frozen prepared foods and a weighing method thereof. Background Art

[0002] In the industrial production process of frozen prepared foods, the weighing link is an essential quality control step, which runs through multiple stages to ensure product specification standardization and food safety. Among them, in the packaging stage, it is necessary to weigh single products or whole bags of products to ensure compliance with the net content marked on the label and avoid regulatory risks or customer complaints caused by non-compliant weights.

[0003] Most current weighing devices use automated equipment for weighing and reject unqualified products in real time, with high efficiency. However, due to the particularity of frozen prepared foods (the center temperature of the product is below -18°C), during the weighing process, ice crystals and condensed water on the surface will remain on the weighing equipment, which will not only affect the normal weighing of subsequent products, but also the remaining ice crystals and condensed water will increase the humidity of the equipment and are prone to breeding bacteria. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent weighing device suitable for frozen prepared foods and a weighing method thereof, and solve the following technical problems: Ice crystals and condensed water on the surface of frozen prepared foods will remain on the weighing equipment, which will affect the normal weighing of subsequent products.

[0005] The purpose of the present invention can be achieved by the following technical solutions: An intelligent weighing device suitable for frozen prepared foods includes an annular conveyor belt. A plurality of weighing mechanisms are evenly arranged on the surface of the conveyor belt along the length direction. The weighing mechanism includes a mounting box fixed on the surface of the conveyor belt. A rotatable weighing platform is fixed on the top of the mounting box. A weighing plate is arranged on the weighing platform. A weighing sensor is installed between the weighing plate and the bottom wall of the weighing platform. A controller is installed in the mounting box, and the controller is electrically connected to the weighing sensor; Sliding grooves are opened on both side walls of the weighing platform. Sliders are slidably connected in the sliding grooves. A push plate is fixed between the two sliders. The bottom of the push plate contacts the surface of the weighing plate. A water scraping strip made of rubber is arranged at the bottom of the side wall of the push plate; A pneumatic component is arranged on the weighing platform.

[0006] As a further solution of the present invention: It further includes a first blanking table and a second blanking table, and the first blanking table and the second blanking table are respectively located on both sides of the conveyor belt.

[0007] As a further solution of the present invention: the pneumatic component includes a fan installed at the bottom of the weighing platform, the air outlet of the fan is connected to an air outlet pipe, a first hollow plate is fixed on one side wall of the weighing platform, an opening is provided on the side wall of the first hollow plate close to the push plate, a second hollow plate is movably provided in the opening, openings are provided on both sides of the second hollow plate, and one end of the second hollow plate is fixedly connected to the push plate.

[0008] As a further solution of the present invention: a return spring is connected between the push plate and the side wall of the weighing platform, a plurality of ventilation holes are equidistantly provided on the push plate, and the ventilation holes correspond to the inner cavity of the second hollow plate, and a baffle is hinged on the side wall of the push plate.

[0009] As a further solution of the present invention: a mounting rod is fixed on one side wall of the mounting box, a touch switch is fixed at one end of the mounting rod, the touch switch is electrically connected to the fan, mounting blocks are fixed on both sides of the conveyor belt, a contact plate is fixed on the mounting block, and a battery is also installed at the bottom of the weighing platform.

[0010] As a further solution of the present invention: rotating shafts are rotatably installed on both side walls of the installation box, rotating rods are fixed to the ends of the two rotating shafts that are away from each other, a torsion spring is connected between the rotating rods and the installation box, a baffle rod is fixed between the two rotating rods, and a plurality of rollers are equidistantly arranged on the baffle rod.

[0011] As a further solution of the present invention: a first rotating block is fixed on the top wall of the installation box, a second rotating block is symmetrically installed on the bottom wall of the weighing platform, an electric rotating shaft is rotatably installed on the first rotating block, and both ends of the electric rotating shaft are respectively fixedly connected to the two second rotating blocks.

[0012] A weighing method for an intelligent weighing device suitable for frozen prepared products comprises the following steps: S1. Place the frozen prepared products to be weighed on the weighing plate. The weighing sensor detects the product weight in real time and starts the conveyor belt. S2. If it meets the preset range, the weighing table rotates to unload and pack. If it exceeds or is less than the preset range, it is transported to the subsequent station and unqualified products are removed; S3. When unloading frozen prepared products, the push plate and scraper strip will scrape off the ice crystals and water remaining on the weighing plate.

[0013] Beneficial effects of the present invention: (1) The present invention realizes accurate weighing by setting a weighing mechanism, connecting the weighing sensors with the controller, and slidingly connecting the push plates in the slide grooves on both sides of the weighing platform, together with the rubber scraper strips at the bottom, to remove the ice crystals and condensed water remaining thereon, effectively reducing humidity and bacterial growth, ensuring weighing accuracy, and realizing automated and efficient intelligent weighing, thereby ensuring food safety and production efficiency; (2) The present invention provides a first unloading platform and a second unloading platform, wherein the first unloading platform is used to receive qualified frozen prepared products, and unqualified frozen prepared products are sent out through the second unloading platform; (3) The present invention arranges a pneumatic component to use a fan to deliver cold air into the first hollow plate. When the frozen prepared product is located on the weighing platform, it will resist the baffle, preventing the cold air from being discharged. After the material is unloaded, the baffle rotates under the action of air pressure, and the cold air is discharged through the ventilation holes, which can accelerate the discharge of ice crystals and condensed water, and air-dry the weighing plate, which is beneficial for subsequent weighing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the conveyor belt of the present invention; Figure 3 It is a schematic structural diagram of the weighing mechanism of the present invention from a first perspective; Figure 4 It is a structural schematic diagram of the weighing platform of the present invention; Figure 5 is a schematic structural diagram of the weighing mechanism of the present invention from a second viewing angle; Figure 6 It is a schematic structural diagram of the first hollow plate and the push plate of the present invention; Figure 7 It is a schematic diagram of the structure of the first hollow plate and the second hollow plate of the present invention; Figure 8 It is a structural schematic diagram of the push plate and the ventilation hole of the present invention.

[0016] In the figure: 1, conveyor belt; 2, first blanking table; 3, second blanking table; 4, weighing mechanism; 401, mounting box; 402, weighing table; 403, weighing plate; 404, push plate; 405, chute; 406, slider; 407, wiper strip; 408, ventilation hole; 409, baffle; 410, first hollow plate; 411, second hollow plate; 412, return spring; 413, fan; 414, air outlet pipe; 415, storage battery; 416, mounting rod; 417, touch switch; 418, first rotating block; 419, second rotating block; 420, rotating shaft; 421, rotating rod; 422, torsion spring; 423, stop rod; 424, roller; 5, mounting block; 6, abutting plate.

[0017] The accompanying drawings are only for illustrative purposes and should not be construed as limiting the present invention; for a better illustration of this embodiment, some components in the drawings will be omitted, enlarged or reduced, and do not represent the size and shape of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. Detailed implementation manners

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1 to 4As shown in the figure, the present invention is an intelligent weighing device applicable to frozen prepared foods, including an annular conveyor belt 1. Along the length direction of the surface of the conveyor belt 1, a plurality of weighing mechanisms 4 are evenly arranged. The weighing mechanism 4 includes a mounting box 401 fixed on the surface of the conveyor belt 1. At the top of the mounting box 401, a rotatable weighing platform 402 is fixed. A weighing plate 403 is arranged on the weighing platform 402. A weighing sensor is installed between the weighing plate 403 and the bottom wall of the weighing platform 402. A controller is installed in the mounting box 401, and the controller is electrically connected to the weighing sensor; sliding grooves 405 are opened on both side walls of the weighing platform 402. Sliders 406 are slidably connected in the sliding grooves 405. A push plate 404 is fixed between the two sliders 406. The bottom of the push plate 404 contacts the surface of the weighing plate 403. A rubber wiper strip 407 is arranged at the bottom of the side wall of the push plate 404; a pneumatic component is arranged on the weighing platform 402; it also includes a first feeding table 2 and a second feeding table 3. The first feeding table 2 and the second feeding table 3 are respectively located on both sides of the conveyor belt 1; first, use a robotic arm to place the frozen prepared food to be weighed on the weighing plate 403. The weighing sensor detects the product weight in real time and transmits the detection information to the controller. The weighing platform 402 can rotate. If the product meets the preset weight range, when the conveyor belt 1 moves the product to the first feeding table 2, the weighing platform 402 rotates, and the qualified product is discharged through the first feeding table 2. If the product exceeds or is less than the preset range, it is discharged after moving to the second feeding table 3. When the weighing platform 402 rotates and tilts, in cooperation with the pneumatic component, the push plate 404 and the wiper strip 407 move along the sliding groove 405 to scrape off the ice crystals and condensed water on the surface of the weighing plate 403.

[0020] Referring to Figures 3 to 7 As shown in the figure, the pneumatic component includes a blower 413 installed at the bottom of the weighing platform 402. The air outlet of the blower 413 is connected to an air outlet pipe 414. A first hollow plate 410 is fixed on one side wall of the weighing platform 402. An opening is arranged on the side wall of the first hollow plate 410 close to the push plate 404. A second hollow plate 411 is movably arranged in the opening. Openings are arranged on both sides of the second hollow plate 411, and one end of the second hollow plate 411 is fixed to the push plate 404; the cold air generated by the blower 413 enters the first hollow plate 410 through the air outlet pipe 414. Due to the obstruction of the frozen prepared food, the push plate 404 will not move. When the weighing platform 402 tilts, under the action of gravity, the frozen prepared food slides and is discharged, and at the same time, the push plate 404 moves to perform the scraping work.

[0021] Referring to Figure 4 、 Figure 6 and Figure 8A return spring 412 is connected between the push plate 404 and the side wall of the weighing platform 402. A plurality of ventilation holes 408 are equidistantly provided on the push plate 404, and the ventilation holes 408 correspond to the inner cavity of the second hollow plate 411. A baffle 409 is hinged on the side wall of the push plate 404. In order to facilitate the reset of the first hollow plate 410 and the second hollow plate 411, when the frozen prepared product is located on the weighing platform 402, the baffle 409 is pressed against, and the air cannot be discharged, and the internal air pressure increases. After the frozen prepared products are unloaded, the baffle 409 loses its limit position and is tilted under the action of air pressure. The air is discharged through the ventilation holes 408, which not only helps to remove ice crystals and condensed water, but also can air-dry the weighing plate 403. At the same time, since unqualified frozen prepared products are discharged at the second unloading station 3, they are in contact with the weighing plate 403 for a long time. If the frozen prepared products are adhered to the weighing plate 403, the increased air pressure can help to separate the frozen prepared products from the weighing plate 403.

[0022] See also Figure 1 , Figure 2 , Figure 3 and Figure 5 A mounting rod 416 is fixed on one side wall of the mounting box 401, and a touch switch 417 is fixed at one end of the mounting rod 416. The touch switch 417 is electrically connected to the fan 413. Mounting blocks 5 are fixed on both sides of the conveyor belt 1, and a contact plate 6 is fixed on the mounting block 5. A battery 415 is also installed at the bottom of the weighing platform 402. In order to reduce the waste of electric energy and the meaningless start-up of the fan 413, when the conveyor belt 1 is started, the touch switch 417 is driven to contact the contact plate 6, and the fan 413 will be turned on. After the touch switch 417 is separated from the contact plate 6, the fan 413 is turned off.

[0023] See also Figure 3 , rotating shafts 420 are rotatably installed on the two side walls of the installation box 401, and rotating rods 421 are fixed at the ends away from each other of the two rotating shafts 420, and a torsion spring 422 is connected between the rotating rod 421 and the installation box 401, and a blocking rod 423 is fixed between the two rotating rods 421, and a plurality of rollers 424 are equidistantly arranged on the blocking rod 423; in order to prevent the frozen prepared products from falling due to vibration or the push of the push plate 404 during the transportation process, the blocking rod 423 is used to block it, and when the weighing platform 402 rotates, it will not affect the unloading of the frozen prepared products.

[0024] See also Figure 5 A first rotating block 418 is fixed on the top wall of the mounting box 401, and a second rotating block 419 is symmetrically installed on the bottom wall of the weighing platform 402. An electric rotating shaft is rotatably installed on the first rotating block 418, and both ends of the electric rotating shaft are fixedly connected to the two second rotating blocks 419 respectively; the controller is used to control the start of the electric rotating shaft, and the electric rotating shaft drives the weighing platform 402 to rotate, unload and reset.

[0025] A weighing method for an intelligent weighing device suitable for frozen prepared products comprises the following steps: S1, placing the frozen prepared product to be weighed on the weighing plate 403, the weighing sensor detects the product weight in real time, and starts the conveyor belt 1; S2. If it meets the preset range, the weighing table 402 rotates to unload and package. If it exceeds or is less than the preset range, it is transported to the subsequent station to remove unqualified products; S3. When the frozen prepared products are unloaded, the push plate 404 and the scraper strip 407 scrape off the ice crystals and water remaining on the weighing plate 403.

[0026] The working principle of the present invention is as follows: the frozen prepared product to be weighed (hereinafter referred to as the product) is placed on the weighing plate 403. Initially, the fan 413 is not started, the push plate 404 is not moved, and no thrust is generated on the product. At the same time, the blocking rod 423 blocks the product to prevent it from falling due to vibration. The weighing sensor detects the quality of the product in real time, and the conveyor belt 1 is started, and the conveyor belt 1 drives the product to rotate counterclockwise (with a rotation speed of 1000 rpm). Figure 1 For example), if the weight of the product meets the pre-examination range, when the product moves to the first unloading station 2, the controller controls the electric shaft to rotate, drives the weighing platform 402 to rotate, and unloads the qualified product through the first unloading station 2; if the product does not meet the pre-examination range, when the product moves to the second unloading station 3, the controller controls the electric shaft to rotate, drives the weighing platform 402 to rotate, and unloads the qualified product through the second unloading station 3; When the conveyor belt 1 is working, it will drive the touch switch 417 to contact the resistance plate 6 to start the fan 413, and the cold air will enter the first hollow plate 410 and the second hollow plate 411 through the air outlet pipe 414. Due to the presence of the product, the baffle 409 will be pressed, and the air cannot be discharged, and the internal air pressure will slowly increase. When the weighing platform 402 is tilted, under the action of gravity and air pressure, the push plate 404 moves to speed up the unloading of the product and scrape off the ice crystals and condensed water on the surface of the weighing plate 403. After the product is unloaded, the baffle 409 loses its limit. Under the action of air pressure, the baffle 409 tilts, and the air is discharged through the ventilation hole 408, which not only helps to remove ice crystals and condensed water, but also can dry the weighing plate 403 to further reduce the residual moisture. After the internal air is completely discharged, the push plate 404 is reset under the action of the reset spring 412, which is convenient for the next weighing.

[0027] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An intelligent weighing device suitable for frozen prepared products, comprising an annular conveyor belt (1), characterized in that: The surface of the conveyor belt (1) is evenly provided with a plurality of weighing mechanisms (4) along the length direction, the weighing mechanisms (4) comprising a mounting box (401) fixed to the surface of the conveyor belt (1), a rotatable weighing platform (402) being fixed to the top of the mounting box (401), a weighing plate (403) being provided on the weighing platform (402), a weighing sensor being installed between the weighing plate (403) and the bottom wall of the weighing platform (402), a controller being installed in the mounting box (401), and the controller being electrically connected to the weighing sensor; The two side walls of the weighing platform (402) are provided with a slide groove (405), a slider (406) is slidably connected in the slide groove (405), a push plate (404) is fixed between the two sliders (406), the bottom of the push plate (404) contacts the surface of the weighing plate (403), and a rubber wiper strip (407) is provided at the bottom of the side wall of the push plate (404); The weighing platform (402) is provided with a pneumatic component.

2. The intelligent weighing device for frozen prepared products according to claim 1, characterized in that: It also comprises a first unloading platform (2) and a second unloading platform (3), wherein the first unloading platform (2) and the second unloading platform (3) are respectively located on two sides of the conveyor belt (1).

3. The intelligent weighing device for frozen prepared products according to claim 1, characterized in that: The pneumatic component includes a fan (413) installed at the bottom of the weighing platform (402), the air outlet of the fan (413) is connected to an air outlet pipe (414), a first hollow plate (410) is fixed on a side wall of the weighing platform (402), an opening is provided on the side wall of the first hollow plate (410) close to the push plate (404), a second hollow plate (411) is movably provided in the opening, openings are provided on both sides of the second hollow plate (411), and one end of the second hollow plate (411) is fixedly connected to the push plate (404).

4. The intelligent weighing device for frozen prepared products according to claim 3, characterized in that: A return spring (412) is connected between the push plate (404) and the side wall of the weighing platform (402); a plurality of ventilation holes (408) are equidistantly provided on the push plate (404), and the ventilation holes (408) correspond to the inner cavity of the second hollow plate (411); a baffle (409) is hinged on the side wall of the push plate (404).

5. The intelligent weighing device for frozen prepared products according to claim 3, characterized in that: A mounting rod (416) is fixed on one side wall of the mounting box (401), a touch switch (417) is fixed on one end of the mounting rod (416), and the touch switch (417) is electrically connected to the fan (413). Mounting blocks (5) are fixed on both sides of the conveyor belt (1), and a contact plate (6) is fixed on the mounting block (5). A storage battery (415) is also installed at the bottom of the weighing platform (402).

6. The intelligent weighing device for frozen prepared products according to claim 1, characterized in that: Rotating shafts (420) are rotatably mounted on both side walls of the installation box (401); rotating rods (421) are fixed to the ends of the two rotating shafts (420) that are away from each other; a torsion spring (422) is connected between the rotating rods (421) and the installation box (401); a blocking rod (423) is fixed between the two rotating rods (421); and a plurality of rollers (424) are equidistantly arranged on the blocking rod (423).

7. The intelligent weighing device for frozen prepared products according to claim 1, characterized in that: A first rotating block (418) is fixed on the top wall of the installation box (401), and a second rotating block (419) is symmetrically mounted on the bottom wall of the weighing platform (402). An electric rotating shaft is rotatably mounted on the first rotating block (418), and both ends of the electric rotating shaft are respectively fixedly connected to the two second rotating blocks (419).

8. The weighing method of the intelligent weighing device suitable for frozen prepared products according to claim 1, characterized in that: The following steps are involved: S1, placing the frozen prepared product to be weighed on the weighing plate (403), the weighing sensor detects the weight of the product in real time, and starts the conveyor belt (1); S2. If the weight meets the preset range, the weighing table (402) rotates to unload and package. If the weight exceeds or is less than the preset range, the weight is transported to the subsequent station and unqualified products are removed. S3. When the frozen prepared products are unloaded, the push plate (404) and the scraper strip (407) scrape off the ice crystals and water remaining on the weighing plate (403).

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