An automatic weighing and negative feedback blanking device for products and its implementation method

Abstract

The present invention discloses a blanking device for automatic weighing and negative feedback of products, which comprises a frame. An inlet conveyor belt is arranged above the frame. A turnover mechanism is arranged at the discharge end of the inlet conveyor belt. A weighing platform is arranged on one side of the discharge end of the inlet conveyor belt. An electronic scale is placed above the weighing platform. A duplex displacement mechanism is arranged above the discharge end of the inlet conveyor belt and the electronic scale. A discharge stepping conveyor belt is arranged on one side of the electronic scale. A transverse movement mechanism is arranged on the side of the discharge stepping conveyor belt. A magnetic attraction assembly is connected to the output end of the transverse movement mechanism; The present invention also discloses a method for realizing the blanking device for automatic weighing and negative feedback of products. The present invention realizes automatic feeding, automatic weighing, blanking of defective products, blanking of qualified products and loading of qualified products of products, improves the working efficiency of product weighing and reduces the labor intensity of staff; The present invention is provided with a turnover mechanism to realize automatic turning and placing of products.

Description

Technical Field

[0001] The present invention belongs to the technical field of soft magnetic ferrite forming and blanking, and particularly relates to a blanking device with automatic weighing and negative feedback for products and a method for realizing the same. Background Art

[0002] A magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures. After passing through multiple processes such as powder forming, grinding, sintering, and detection, the magnetic core needs to be packaged into a foam box for packing.

[0003] During powder forming of the magnetic core, parameters such as size and weight usually need to be randomly inspected, and some products with higher requirements need to be fully inspected.

[0004] Currently, the weight of products is mostly detected by manually placing them on an electronic scale, which requires a large amount of human resources, and has low weighing efficiency and large weighing errors.

[0005] Therefore, it is urgent to upgrade the existing powder forming and blanking equipment into a machine with a weighing function. Summary of the Invention

[0006] The purpose of the present invention is to provide a blanking device with automatic weighing and negative feedback for products to solve the problems raised in the above background art. A blanking device with automatic weighing and negative feedback for products provided by the present invention has the characteristics of automatic weighing and negative feedback functions.

[0007] Another purpose of the present invention is to provide a method for realizing a blanking device with automatic weighing and negative feedback for products.

[0008] To achieve the above purpose, the present invention provides the following technical solution: A blanking device with automatic weighing and negative feedback for products, including a frame, an inlet conveyor belt is provided above the frame, a turning mechanism is provided at the discharge end of the inlet conveyor belt, a weighing platform is provided on one side of the discharge end of the inlet conveyor belt, an electronic scale is placed above the weighing platform, a duplex displacement mechanism is provided above the discharge end of the inlet conveyor belt and the electronic scale, a discharge stepping conveyor belt is provided on one side of the electronic scale, a defective product collection box is provided on one side of the feed end of the discharge stepping conveyor belt, a transverse movement mechanism is provided on the side of the discharge stepping conveyor belt, a magnetic attraction component is connected to the output end of the transverse movement mechanism, a lifting telescopic fork is provided below the transverse movement mechanism, and a material trolley is provided on one side of the frame.

[0009] In order to implement the automatic deburring process for products, further, a bottom surface deburring component is provided on the feeding end side of the feeding belt, and a top surface deburring component is provided above the discharging end of the feeding belt; the bottom surface deburring component includes a deburring mounting plate, a deburring driving motor is mounted on the side surface of the upper end of the deburring mounting plate, an eccentric shaft is connected to the output end of the deburring driving motor, a shaking frame is further provided on the deburring mounting plate, the shaking frame is slidably connected to the deburring mounting plate through a guiding shaft, the end of the eccentric shaft is connected to the shaking frame through a bearing, a brush is provided on the side surface of the shaking frame, and the structure of the top surface deburring component is the same as that of the bottom surface deburring component.

[0010] In order to realize the automatic turning and placing of products, further, the turning mechanism includes a turning mechanism support seat, a vertical plate is provided on the turning mechanism support seat, a synchronous pulley set is mounted on the vertical plate, a lifting motor is mounted above the turning mechanism support seat, the output end of the lifting motor is connected to the synchronous pulley set, a lifting guide rail is further mounted on the turning mechanism support seat, a lifting block is mounted on the slider of the lifting guide rail, the lifting block is also fixedly connected to the synchronous belt of the synchronous pulley set, a connecting shaft is rotatably arranged inside the lifting block, one end of the connecting shaft is connected with a magnetic attraction block, the other end of the connecting shaft is connected with a connecting rod, the other end of the connecting rod is connected with a cam bearing, and a guiding groove is provided on the vertical plate, and the cam bearing is embedded in the guiding groove.

[0011] In order to realize the positioning of products and ensure that the double-station transfer mechanism can accurately pick up products, further, a transverse movement guide rail is mounted above the turning mechanism support seat, a pushing block is connected to the slider of the transverse movement guide rail, a pushing cylinder is mounted on one side above the turning mechanism support seat, the output end of the pushing cylinder is connected to the pushing block, and a positioning seat located on one side of the magnetic attraction block is further mounted on the turning mechanism support seat.

[0012] In order to realize the weighing, grasping, blanking of products and the blanking of defective products, further, the double-station transfer mechanism includes a transverse movement module, a lifting cylinder is mounted on the output end of the transverse movement module, a suction nozzle mounting plate is mounted on the output end of the lifting cylinder, a first vacuum suction nozzle is mounted at one end of the suction nozzle mounting plate, a linear guide rail and a defective product discharging cylinder are further mounted on the suction nozzle mounting plate, the output end of the defective product discharging cylinder is connected to the slider of the linear guide rail, and a second vacuum suction nozzle is mounted on the slider of the linear guide rail.

[0013] In order to drive the magnetic attraction component to move in the X-axis and Y-axis directions, further, the transverse movement mechanism includes an X-axis movement module, a Y-axis movement module is mounted on the output end of the X-axis movement module, and a magnetic attraction component mounting plate is mounted on the output end of the Y-axis movement module.

[0014] In order to achieve the suction of products on the discharging stepping belt, further, the magnetic attraction assembly includes a lifting electric cylinder, which is installed on the magnetic attraction assembly mounting plate. The output end of the lifting electric cylinder is connected with a magnetic attraction assembly connecting plate. Below the magnetic attraction assembly connecting plate is connected with a magnetic attraction bottom plate. A magnetic block lifting cylinder is installed on the magnetic attraction bottom plate. The output end of the magnetic block lifting cylinder is installed with a magnet mounting plate. A magnetic block is connected to the bottom surface of the magnet mounting plate. A partition plate located below the magnetic block is also connected to the magnetic attraction bottom plate. The magnet mounting plate is also connected to the magnetic attraction bottom plate through a guide rod.

[0015] In order to place the firing plate filled with products into the material trolley and at the same time realize the switching of empty plates, further, the lifting telescopic fork includes a lifting linear guide rail. A rack is provided on the side of the lifting linear guide rail. A lifting connection block is installed on the slider of the lifting linear guide rail. A two-stage telescopic fork is installed on the lifting connection block. A lifting drive motor is also installed on the lifting connection block. A gear meshing with the rack is installed on the output end of the lifting drive motor.

[0016] In the present invention, further, a method for realizing a product automatic weighing and negative feedback discharging device includes the following steps:

[0017] (1) The product is conveyed to the end by the feeding belt. The lifting motor operates to drive the magnetic attraction block to descend to suck the product, and then the lifting motor drives the magnetic attraction block to move upward. During the upward movement, under the cooperation of the cam bearing and the guide groove, the magnetic attraction block flips upward by 180 degrees;

[0018] (2) The pushing cylinder operates to drive the pushing block to push the product on the magnetic attraction block into the positioning seat;

[0019] (3) The transverse movement module operates to drive the first vacuum suction nozzle to move above the positioning seat. At this time, the second vacuum suction nozzle is located above the electronic scale. The lifting cylinder operates to drive the suction nozzle mounting plate to descend. The first vacuum suction nozzle sucks up the product on the positioning seat, and the second vacuum suction nozzle sucks up the product on the electronic scale. Then the transverse movement module drives the lifting cylinder to move transversely. The first vacuum suction nozzle places the product on the positioning seat onto the electronic scale for weighing and transmits the weighing data to the PLC controller;

[0020] (4) The PLC controller judges whether the product weight is qualified. If it is a qualified product, it is placed on the discharging stepping belt by the second vacuum suction nozzle. If it is an unqualified product, the defective product discharging cylinder extends, and the second vacuum suction nozzle places the product into the defective product collection box;

[0021] (5) The qualified products are conveyed backward at equal intervals on the discharging stepping belt. Then the transverse movement mechanism drives the magnetic attraction assembly to operate, sucks up the qualified products on the discharging stepping belt, and then places them on the firing plate on the lifting telescopic fork.

[0022] (6). After placing a set number of qualified products on the firing plate, the two-stage telescopic fork operates to place the firing plate with qualified products into the material trolley and take out an empty firing plate to reset.

[0023] Further in the present invention, for the implementation method of the automatic weighing and negative feedback blanking device of a product, the implementation method of negative feedback includes the following steps:

[0024] (1). Divide the weight data of the products into several grades;

[0025] (2). The PLC controller takes the weight data of several products as a batch, removes the highest value and the lowest value, and takes the average value as the feedback basis;

[0026] (3). When the average value is in the grade with large deviation, the PLC controller gives a stop signal to stop the pressing of the servo press in the previous process and alarms to remind the staff to check the servo press in the previous process;

[0027] (4). When the average value is in the grade with small deviation, the PLC controller gives an adjustment signal to make the servo press in the previous process automatically adjust its own parameters.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] 1. The present invention realizes the automatic feeding, automatic weighing, discharging of defective products, discharging of qualified products and loading of qualified products of the products, improves the working efficiency of product weighing, and reduces the labor intensity of the staff; the present invention is provided with a flipping mechanism to realize the automatic flipping and placing of the products;

[0030] 2. The present invention is provided with a positioning seat. The pushing block is driven by the pushing cylinder to move, and the product on the magnetic attraction block is pushed into the positioning seat, realizing the positioning of the product and ensuring that the double-position transfer mechanism can accurately suck the product;

[0031] 3. Through the setting of the double-position transfer mechanism, the present invention realizes the weighing and grasping, blanking and discharging of defective products of the products;

[0032] 4. The feeding end side of the feeding belt of the present invention is provided with a bottom surface burr brushing assembly, and the top surface burr brushing assembly is arranged above the discharging end of the feeding belt, realizing the automatic burr brushing process of the products;

[0033] 5. Through the setting of the lifting telescopic fork, the present invention can place the firing plate full of products into the material trolley, and at the same time can also realize the switching of the empty plate;

[0034] 6. Through the setting of the negative feedback system, the present invention can control the weight of the products to be as close as possible to the standard value, thus effectively improving the qualified rate of the products. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic structural diagram of the present invention;

[0036] Figure 2 is a schematic structural diagram of the burr brushing component on the bottom surface of the present invention;

[0037] Figures 3 - 5 are all schematic structural diagrams of the flipping mechanism of the present invention;

[0038] Figure 6 is a schematic structural diagram of the duplex displacement and transfer mechanism of the present invention;

[0039] Figure 7 is a schematic structural diagram of the transverse movement mechanism of the present invention;

[0040] Figure 8 is a schematic structural diagram of the magnetic attraction component of the present invention;

[0041] Figure 9 is a schematic structural diagram of the lifting telescopic fork of the present invention;

[0042] In the figure: 1, frame; 2, burr brushing component on the bottom surface; 21, burr brushing mounting plate; 22, burr brushing driving motor; 23, eccentric shaft; 24, shaking frame; 25, brush; 26, bearing; 27, guide shaft; 3, feeding belt; 4, burr brushing component on the top surface; 5, flipping mechanism; 51, flipping mechanism support seat; 52, lifting motor; 53, synchronous pulley set; 54, vertical plate; 55, lifting block; 56, pushing block; 57, transverse movement guide rail; 58, pushing cylinder; 59, positioning seat; 510, magnetic attraction block; 511, lifting guide rail; 512, connecting shaft; 513, connecting rod; 514, cam bearing; 515, guide groove; 6, duplex displacement and transfer mechanism; 61, transverse movement module; 62, lifting cylinder; 63, first vacuum suction nozzle; 64, defective product discharging cylinder; 65, second vacuum suction nozzle; 66, linear guide rail; 67, suction nozzle mounting plate; 7, transverse movement mechanism; 71, X-axis movement module; 72, Y-axis movement module; 73, magnetic attraction component mounting plate; 8, magnetic attraction component; 81, magnetic attraction bottom plate; 82, magnet mounting plate; 83, partition plate; 84, magnetic block lifting cylinder; 85, guide rod; 86, lifting electric cylinder; 87, magnetic attraction component connecting plate; 9, lifting telescopic fork; 91, lifting linear guide rail; 92, rack; 93, lifting driving motor; 94, lifting connection block; 95, two-stage telescopic fork; 10, discharging stepping belt; 11, material trolley; 12, defective product collection box; 13, weighing platform. DETAILED DESCRIPTION OF THE INVENTION

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] Embodiment 1

[0045] Please refer to Figures 1 - 9 , the present invention provides the following technical solutions: An automatic weighing and negative feedback blanking device for products, including a frame 1, an inlet conveyor belt 3 is arranged above the frame 1, a turning mechanism 5 is arranged at the discharge end of the inlet conveyor belt 3, a weighing platform 13 is arranged on one side of the discharge end of the inlet conveyor belt 3, an electronic scale is placed above the weighing platform 13, a duplex displacement mechanism 6 is arranged above the discharge end of the inlet conveyor belt 3 and the electronic scale, a discharge stepping conveyor belt 10 is arranged on one side of the electronic scale, a defective product collection box 12 is arranged on one side of the feed end of the discharge stepping conveyor belt 10, a transverse movement mechanism 7 is arranged on the side of the discharge stepping conveyor belt 10, a magnetic attraction component 8 is connected to the output end of the transverse movement mechanism 7, a lifting telescopic fork 9 is arranged below the transverse movement mechanism 7, and a material trolley 11 is arranged on one side of the frame 1.

[0046] By adopting the above technical solutions, automatic feeding, automatic weighing, defective product blanking, qualified product blanking and loading of qualified products of the product are realized, the working efficiency of product weighing is improved, and the labor intensity of workers is reduced.

[0047] Specifically, the turning mechanism 5 includes a turning mechanism support seat 51, a vertical plate 54 is arranged on the turning mechanism support seat 51, a synchronous pulley group 53 is installed on the vertical plate 54, a lifting motor 52 is installed above the turning mechanism support seat 51, the output end of the lifting motor 52 is connected to the synchronous pulley group 53, a lifting guide rail 511 is also installed on the turning mechanism support seat 51, a lifting block 55 is installed on the slider of the lifting guide rail 511, the lifting block 55 is also fixedly connected to the synchronous belt of the synchronous pulley group 53, a connecting shaft 512 is rotated inside the lifting block 55, one end of the connecting shaft 512 is connected to a magnetic attraction block 510, the other end of the connecting shaft 512 is connected to a connecting rod 513, the other end of the connecting rod 513 is connected to a cam bearing 514, and a guide groove 515 is arranged on the vertical plate 54, and the cam bearing 514 is embedded in the guide groove 515.

[0048] By adopting the above technical solutions, automatic turning and placing of the product are realized.

[0049] Specifically, a transverse guide rail 57 is installed above the turning mechanism support base 51. A pusher block 56 is connected to the slider of the transverse guide rail 57. A pusher cylinder 58 is installed on one side above the turning mechanism support base 51. The output end of the pusher cylinder 58 is connected to the pusher block 56. A positioning seat 59 is also installed on the turning mechanism support base 51 and is located on one side of the magnetic attraction block 510.

[0050] By adopting the above technical solution, the positioning of the product is realized, ensuring that the duplex displacement mechanism 6 can accurately pick up the product.

[0051] Specifically, the duplex displacement mechanism 6 includes a transverse movement module 61. A lifting cylinder 62 is installed on the output end of the transverse movement module 61. A suction nozzle mounting plate 67 is installed on the output end of the lifting cylinder 62. A first vacuum suction nozzle 63 is installed at one end of the suction nozzle mounting plate 67. A linear guide rail 66 and a defective product discharging cylinder 64 are also installed on the suction nozzle mounting plate 67. The output end of the defective product discharging cylinder 64 is connected to the slider of the linear guide rail 66. A second vacuum suction nozzle 65 is installed on the slider of the linear guide rail 66.

[0052] By adopting the above technical solution, the weighing and grasping, discharging of the product, and discharging of defective products are realized.

[0053] Specifically, the transverse movement mechanism 7 includes an X-axis movement module 71. A Y-axis movement module 72 is installed on the output end of the X-axis movement module 71. A magnetic attraction component mounting plate 73 is installed on the output end of the Y-axis movement module 72.

[0054] By adopting the above technical solution, it is used to drive the magnetic attraction component 8 to move in the X-axis and Y-axis directions.

[0055] Specifically, the magnetic attraction component 8 includes a lifting electric cylinder 86. The lifting electric cylinder 86 is installed on the magnetic attraction component mounting plate 73. The output end of the lifting electric cylinder 86 is connected to a magnetic attraction component connecting plate 87. A magnetic attraction bottom plate 81 is connected below the magnetic attraction component connecting plate 87. A magnetic block lifting cylinder 84 is installed on the magnetic attraction bottom plate 81. A magnet mounting plate 82 is installed on the output end of the magnetic block lifting cylinder 84. A magnetic block is connected to the bottom surface of the magnet mounting plate 82. A partition plate 83 is also connected to the magnetic attraction bottom plate 81 and is located below the magnetic block. The magnet mounting plate 82 is also connected to the magnetic attraction bottom plate 81 through a guide rod 85.

[0056] By adopting the above technical solution, the picking up of the product on the discharging stepping belt 10 is realized.

[0057] Embodiment 2

[0058] The difference between this embodiment and Embodiment 1 is that: on the feeding end side of the feeding belt 3, a bottom surface burr brushing assembly 2 is provided, and above the discharging end of the feeding belt 3, a top surface burr brushing assembly 4 is provided; the bottom surface burr brushing assembly 2 includes a burr brushing mounting plate 21, a burr brushing driving motor 22 is mounted on the side of the upper end of the burr brushing mounting plate 21, an eccentric shaft 23 is connected to the output end of the burr brushing driving motor 22, a shaking frame 24 is further provided on the burr brushing mounting plate 21, the shaking frame 24 is slidably connected to the burr brushing mounting plate 21 through a guide shaft, the end of the eccentric shaft 23 is connected to the shaking frame 24 through a bearing 26, and a brush 25 is provided on the side of the shaking frame 24. The structure of the top surface burr brushing assembly 4 is the same as that of the bottom surface burr brushing assembly 2.

[0059] By adopting the above technical solution, an automatic burr brushing process for products is realized.

[0060] Embodiment 3

[0061] The difference between this embodiment and Embodiment 1 is that: specifically, the lifting and telescopic fork 9 includes a lifting linear guide rail 91, a rack 92 is provided on the side of the lifting linear guide rail 91, a lifting connection block 94 is mounted on the slider of the lifting linear guide rail 91, a two-stage telescopic fork 95 is mounted on the lifting connection block 94, a lifting driving motor 93 is further mounted on the lifting connection block 94, and a gear meshing with the rack 92 is mounted on the output end of the lifting driving motor 93.

[0062] The lifting and telescopic fork in this embodiment adopts two groups of independent lifting and telescopic structures, so that the device can independently replace the sintering plate. When the left sintering plate is full and needs to be replaced, the device can continue to be placed on the right sintering plate, avoiding the situation of temporary shutdown of the device due to too long time for replacing the sintering plate, and can realize continuous production all the time.

[0063] By adopting the above technical solution, the sintering plate filled with products can be placed into the material trolley 11, and at the same time, the switching of the empty plate can be realized.

[0064] Embodiment 4

[0065] Furthermore, a method for realizing an automatic weighing and negative feedback blanking device for products of the present invention includes the following steps:

[0066] (1). The product is conveyed to the end by the feeding belt 3, the lifting motor 52 acts, drives the magnetic attraction block 510 to descend to suck the product, and then the lifting motor 52 drives the magnetic attraction block 510 to move upward. During the upward movement, under the cooperation of the cam bearing 514 and the guide groove 515, the magnetic attraction block 510 turns over 180 degrees upward;

[0067] (2). The pushing cylinder 58 acts, drives the pushing block 56 to push the product on the magnetic attraction block 510 into the positioning seat 59;

[0068] (3). The lateral movement module 61 operates to drive the first vacuum suction nozzle 63 to move above the positioning seat 59. At this time, the second vacuum suction nozzle 65 is located above the electronic scale. The lifting cylinder 62 operates to drive the suction nozzle mounting plate 67 to descend. The first vacuum suction nozzle 63 sucks up the product on the positioning seat 59, and the second vacuum suction nozzle 65 sucks up the product on the electronic scale. Then, the lateral movement module 61 drives the lifting cylinder 62 to move laterally. The first vacuum suction nozzle 63 places the product on the positioning seat 59 onto the electronic scale for weighing, and transmits the weighing data to the PLC controller.

[0069] (4). The PLC controller determines whether the weight of the product is qualified. If it is a qualified product, it is placed on the discharge stepping belt 10 by the second vacuum suction nozzle 65. If it is an unqualified product, the defective product discharging cylinder 64 extends, and the second vacuum suction nozzle 65 places the product into the defective product collection box 12.

[0070] (5). The qualified products are conveyed equidistantly backward on the discharge stepping belt 10. Then, the transverse movement mechanism 7 drives the magnetic attraction component 8 to operate, sucks up the qualified products on the discharge stepping belt 10, and then places them on the bearing plate on the lifting telescopic fork 9.

[0071] (6). After placing the set number of qualified products on the bearing plate, the two-stage telescopic fork 95 operates to place the bearing plate with the qualified products into the material trolley 11, and takes out an empty bearing plate to reset.

[0072] Embodiment 5

[0073] Further, for the implementation method of the automatic weighing and negative feedback blanking device of the product described in the present invention, the implementation method of negative feedback includes the following steps:

[0074] (1). Divide the weight data of the products into A - E grades. Grade A is for products with a weight higher than the standard value by 0.1 gram; Grade B is for products with a weight higher than the standard value by 0.05 gram to 0.1 gram; Grade C is for products with a weight higher than the standard value by 0.05 gram to lower than the standard value by 0.05 gram; Grade D is for products with a weight lower than the standard part by 0.05 gram to 0.1 gram; Grade E is for products with a weight lower than the standard value by 0.1 gram.

[0075] (2). The PLC controller takes the weight data of 8 products as a batch, removes the highest value and the lowest value, and takes the average value as the feedback basis.

[0076] (3). When the average value is in Grade A or Grade E, it indicates that the deviation range of the product is large. The PLC controller gives a stop signal to stop the pressing of the servo press in the previous process, and alarms to remind the staff to check the servo press in the previous process.

[0077] (4) When the average value is in gear B or gear D, it indicates that the weight deviation of the product is small, but it is not the most ideal state. The PLC controller gives an adjustment signal to automatically adjust the parameters of the servo press in the previous process.

[0078] In addition, each product needs to additionally judge whether it is qualified by itself and make the following restrictions: when three consecutive products are in gear B or gear D, the PLC will also give a stop signal to make the servo press in the previous process stop pressing. Finally, the weight fluctuation of the product is controlled within gear C as much as possible.

[0079] By adopting the above technical solution, through the setting of the negative feedback system, the weight of the product can be controlled to be as close to the standard value as possible, thereby effectively improving the qualified rate of the product.

[0080] In summary, the present invention realizes automatic feeding, automatic weighing, discharging of defective products, discharging of qualified products, and loading of qualified products of the product, improves the working efficiency of product weighing, and reduces the labor intensity of the staff; the present invention is provided with a flipping mechanism 5 to realize automatic flipping and placing of the product; the present invention is provided with a positioning seat 59, and the pushing block 56 is driven by the pushing cylinder 58 to push the product on the magnetic attraction block 510 into the positioning seat 59, realizing the positioning of the product and ensuring that the dual-axis displacement mechanism 6 can accurately pick up the product; through the setting of the dual-axis displacement mechanism 6, the present invention realizes weighing and picking, discharging, and discharging of defective products of the product; a bottom surface deburring component 2 is arranged on the feeding end side of the feeding belt 3 of the present invention, and a top surface deburring component 4 is arranged above the discharging end of the feeding belt 3, realizing the automatic deburring process of the product; through the setting of the lifting telescopic fork 9, the firing plate filled with products can be placed in the material trolley 11, and at the same time, the switching of the empty plate can be realized; by adopting the above technical solution, through the setting of the negative feedback system, the weight of the product can be controlled to be as close to the standard value as possible, thereby effectively improving the qualified rate of the product.

[0081] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic weighing and negative feedback blanking device for a product, comprising a frame, characterized in that: There is a feeding belt above the frame. A flipping mechanism is provided at the discharging end of the feeding belt. A weighing platform is provided on one side of the discharging end of the feeding belt. An electronic scale is placed above the weighing platform. A duplex displacement mechanism is provided above the discharging end of the feeding belt and the electronic scale. A discharging stepping belt is provided on one side of the electronic scale. A defective product collection box is provided on one side of the feeding end of the discharging stepping belt. A transverse movement mechanism is provided on the side of the discharging stepping belt. A magnetic attraction component is connected to the output end of the transverse movement mechanism. A lifting telescopic fork is provided below the transverse movement mechanism. A material trolley is provided on one side of the frame; A bottom surface burr brushing component is provided on the feeding end side of the feeding belt, and a top surface burr brushing component is provided above the discharging end of the feeding belt; the bottom surface burr brushing component includes a burr brushing mounting plate. A burr brushing driving motor is installed on the side of the upper end of the burr brushing mounting plate. An eccentric shaft is connected to the output end of the burr brushing driving motor. A shaking frame is further provided on the burr brushing mounting plate. The shaking frame is slidably connected to the burr brushing mounting plate through a guiding shaft. The end of the eccentric shaft is connected to the shaking frame through a bearing. A brush is provided on the side of the shaking frame. The structure of the top surface burr brushing component is the same as that of the bottom surface burr brushing component; The flipping mechanism includes a flipping mechanism support seat. A vertical plate is provided on the flipping mechanism support seat. A synchronous pulley set is installed on the vertical plate. A lifting motor is installed above the flipping mechanism support seat. The output end of the lifting motor is connected to the synchronous pulley set. A lifting guide rail is further installed on the flipping mechanism support seat. A lifting block is installed on the slider of the lifting guide rail. The lifting block is also fixedly connected to the synchronous belt of the synchronous pulley set. A connecting shaft is rotated inside the lifting block. One end of the connecting shaft is connected to a magnetic attraction block. The other end of the connecting shaft is connected to a connecting rod. The other end of the connecting rod is connected to a cam bearing. A guiding groove is provided on the vertical plate. The cam bearing is embedded in the guiding groove. A transverse movement guide rail is installed above the flipping mechanism support seat. A pushing block is connected to the slider of the transverse movement guide rail. A pushing cylinder is installed on one side above the flipping mechanism support seat. The output end of the pushing cylinder is connected to the pushing block. A positioning seat is further installed on the flipping mechanism support seat on one side of the magnetic attraction block; The pushing cylinder drives the pushing block to act, pushing the product on the magnetic attraction block into the positioning seat to position the product, ensuring that the duplex displacement mechanism accurately sucks the product; Through the duplex displacement mechanism, the weighing, grasping, blanking and defective product blanking of the product are carried out; The weight of the product is controlled through a negative feedback system.

2. The automatic weighing and negative feedback blanking device for a product according to claim 1, characterized in that: The duplex displacement mechanism includes a transverse movement module. A lifting cylinder is installed on the output end of the transverse movement module. A suction nozzle mounting plate is installed on the output end of the lifting cylinder. A first vacuum suction nozzle is installed at one end of the suction nozzle mounting plate. A linear guide rail and a defective product discharging cylinder are further installed on the suction nozzle mounting plate. The output end of the defective product discharging cylinder is connected to the slider of the linear guide rail. A second vacuum suction nozzle is installed on the slider of the linear guide rail.

3. The automatic weighing and negative feedback blanking device for a product according to claim 1, characterized in that: The transverse movement mechanism includes an X-axis movement module. A Y-axis movement module is installed on the output end of the X-axis movement module. A magnetic attraction component mounting plate is installed on the output end of the Y-axis movement module.

4. The automatic weighing and negative feedback blanking device for a product according to claim 3, characterized in that: The magnetic attraction assembly includes a lifting electric cylinder which is installed on the mounting plate of the magnetic attraction assembly. A connecting plate of the magnetic attraction assembly is connected to the output end of the lifting electric cylinder. A magnetic attraction bottom plate is connected below the connecting plate of the magnetic attraction assembly. A magnetic block lifting cylinder is installed on the magnetic attraction bottom plate. A magnet mounting plate is installed on the output end of the magnetic block lifting cylinder. A magnetic block is connected to the bottom surface of the magnet mounting plate. A partition plate located below the magnetic block is also connected to the magnetic attraction bottom plate. The magnet mounting plate is also connected to the magnetic attraction bottom plate through a guide rod.

5. The automatic weighing and negative feedback blanking device for a product according to claim 1, characterized in that: The lifting telescopic fork includes a lifting linear guide rail. A rack is provided on the side surface of the lifting linear guide rail. A lifting connecting block is installed on the slider of the lifting linear guide rail. A two-stage telescopic fork is installed on the lifting connecting block. A lifting drive motor is also installed on the lifting connecting block. A gear meshing with the rack is installed on the output end of the lifting drive motor.

6. The implementation method of an automatic weighing and negative feedback blanking device for a product according to any one of claims 1-5, characterized in that, It includes the following steps: (1). The product is conveyed to the end by the feeding belt. The lifting motor operates to drive the magnetic attraction block to descend to suck the product, and then the lifting motor drives the magnetic attraction block to move upward. During the upward movement, under the cooperation of the cam bearing and the guide groove, the magnetic attraction block flips upward by 180 degrees. (2). The pushing cylinder operates to drive the pushing block to push the product on the magnetic attraction block into the positioning seat. (3). The transverse movement module operates to drive the first vacuum suction nozzle to move above the positioning seat. At this time, the second vacuum suction nozzle is located above the electronic scale. The lifting cylinder operates to drive the suction nozzle mounting plate to descend. The first vacuum suction nozzle sucks up the product on the positioning seat, and the second vacuum suction nozzle sucks up the product on the electronic scale. Then the transverse movement module drives the lifting cylinder to move transversely. The first vacuum suction nozzle places the product on the positioning seat onto the electronic scale for weighing, and transmits the weighing data to the PLC controller. (4). The PLC controller judges whether the weight of the product is qualified. If it is a qualified product, it is placed on the discharging stepping belt by the second vacuum suction nozzle. If it is an unqualified product, the defective product discharging cylinder extends, and the second vacuum suction nozzle places the product into the defective product collection box. (5). The qualified products are conveyed backward at equal intervals on the discharging stepping belt. Then the transverse movement mechanism drives the magnetic attraction assembly to operate, sucks up the qualified products on the discharging stepping belt, and then places them on the bearing plate on the lifting telescopic fork. (6). After a set number of qualified products are placed on the bearing plate, the two-stage telescopic fork operates to place the bearing plate with the qualified products into the material trolley and take out an empty bearing plate to reset.

7. The implementation method of an automatic weighing and negative feedback blanking device for a product according to claim 6, characterized in that, The implementation method of negative feedback includes the following steps: (1). Divide the weight data of the products into several grades. (2). The PLC controller takes the weight data of several products as a batch, removes the highest value and the lowest value, and takes the average value as the feedback basis. (3). When the average value is in the grade with large deviation, the PLC controller gives a shutdown signal to stop the pressing of the servo press in the previous process and alarms to remind the staff to check the servo press in the previous process. (4). When the average value is in the grade with small deviation, the PLC controller gives an adjustment signal to make the servo press in the previous process automatically adjust its own parameters.

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