Tray forming device and method

Abstract

The present application discloses a tray forming device and method, comprising a rotary worktable, a plurality of forming molds, a frame, a hot pressing mechanism, an industrial camera and a filling device; the plurality of forming molds are arranged on the top of the rotary worktable, and the plurality of forming molds are distributed in a circular array around the center of the rotary worktable; the rotary worktable is located in the frame; the hot pressing mechanism is arranged on the top of the frame, and the hot pressing mechanism is used to extend into the corresponding forming mold to hot press and form a fiberglass tray; the industrial camera is arranged on the top of the frame, and the industrial camera is used to take pictures of the fiberglass tray after being formed in the forming mold to identify the defect of the current fiberglass tray; the filling device is arranged on the top of the frame, and the filling device is used to fill the fiberglass tray that needs to be secondary molded in the forming mold directly below the hot pressing mechanism. The present application has the advantages of accurately identifying the defect of the fiberglass tray after the first molding, and having high recognition accuracy.

Description

Technical Field

[0001] The present application relates to the technical field of sheet metal forming, and in particular to a pallet forming device and method. Background Art

[0002] Glass fiber (abbreviated as fiberglass) is an inorganic, non-metallic material with excellent properties. Available in a wide variety of types, it boasts excellent insulation, heat resistance, corrosion resistance, and mechanical strength. In the manufacture of abrasive discs, fiberglass is used as the substrate. A cutting device is used to cut large sheets of fiberglass into discs, with the remaining fiberglass scraps treated as waste.

[0003] Fiberglass scraps can be recycled and processed into fiberglass pallets, which can be used as load-bearing boards for workshop transportation, thus achieving the purpose of secondary utilization. However, since existing fiberglass pallets are all hot-pressed with fiberglass scraps, and there are many gaps in the fiberglass scraps, when hot-pressed in the mold cavity, the fiberglass scraps are relatively weakly filled at the edge of the mold cavity, resulting in a certain degree of defect on the edge of the final molded fiberglass pallet. If the defect is not large, it can be used as a finished product. If the defect is large, it needs to be reworked and filler is added to the edge of the fiberglass pallet and hot-pressed again to ensure that the molded fiberglass pallet meets the use requirements. If filler is added to each one, the filler raw material is insufficient and it is difficult to meet the use requirements. Therefore, it is necessary to judge whether secondary molding is needed based on the defect situation of the fiberglass pallet after molding. At present, the defect situation of the fiberglass pallet after the first molding is mainly judged manually. Different people have different judgment standards, the human error is large, and the recognition accuracy is low. Summary of the Invention

[0004] The main purpose of this application is to provide a tray forming device and method, which aims to solve the technical problem that in the existing preparation of fiberglass trays, defects of the fiberglass trays after the first molding need to be manually judged and identified, and the recognition accuracy is low.

[0005] To achieve the above-mentioned objectives, the present application provides a pallet forming device, comprising a rotary worktable, multiple forming molds, a frame, a hot pressing mechanism, an industrial camera and a filling device; multiple forming molds are arranged on the top of the rotary worktable, and the multiple forming molds are distributed in a circular array around the center of the rotary worktable; the rotary worktable is located in the frame; the hot pressing mechanism is arranged at the top of the frame, and the hot pressing mechanism is used to extend into the corresponding forming mold to hot press and form a fiberglass pallet; the industrial camera is arranged at the top of the frame, and the industrial camera is used to take pictures of the fiberglass pallet after being formed in the forming mold to identify the defects of the current fiberglass pallet; the filling device is arranged at the top of the frame, and the filling device is used to fill the fiberglass pallet that needs to be secondary molded in the forming mold directly below the hot pressing mechanism.

[0006] Optionally, the forming mold is open at the top and bottom, and a limiting step is provided at the bottom of the forming mold. A movable plate that fits into the inner wall of the forming mold is provided on the limiting step. The movable plate and the inner wall of the forming mold form a cavity that cooperates with the hot pressing mechanism. The bottom of the movable plate is connected to a pushing cylinder provided on a rotating workbench. The pushing cylinder is used to push the movable plate out of the forming mold. A first heating plate is provided on the inner wall of the forming mold, and the first heating plate is electrically connected to a first temperature controller located on the outer wall of the forming mold.

[0007] Optionally, the hot pressing mechanism includes a telescopic cylinder arranged at the top of the frame, the bottom of the telescopic cylinder is connected to a pressure plate, the bottom of the pressure plate is connected to a second heating plate, the second heating plate is electrically connected to a second temperature controller, and the second temperature controller is arranged at the top of the pressure plate.

[0008] Optionally, the filling device includes a material box arranged on the top of the frame, the material box is filled with filling material, and multiple solenoid valves are arranged at the bottom of the material box. The solenoid valves are all connected to discharge pipes, and the bottom of the discharge pipe is an arc section. The arc sections of the multiple discharge pipes are respectively close to the edge of the forming mold to fill the filling material to the surrounding of the fiberglass tray.

[0009] Optionally, a material pump is provided on the top of the material box, and the material pump is respectively connected to a first material pipe and a second material pipe, the first material pipe extends into the material box, and the second material pipe is connected to a mixing device; wherein, the mixing device includes a tank body, the second material pipe is connected to the bottom of the tank body, a feeding hopper is provided on the top of the tank body, a first motor is provided on the top of the tank body, the first motor is connected to a rotating shaft located in the tank body, a spiral stirring member is provided on the rotating shaft, and a plurality of scraping blades are provided at the bottom of the rotating shaft, and the scraping blades are close to the inner wall and the bottom of the tank body at the same time.

[0010] Optionally, it also includes a base, on which a support column is movably provided, a rotating workbench is connected to the top of the support column, and a rotating drive mechanism is provided on the base for driving the support column to rotate; wherein the rotating drive mechanism includes a second motor provided on the base, the second motor is connected to a driving gear, the driving gear is meshedly connected to a driven gear ring, and the driven gear ring is fixedly sleeved on the support column.

[0011] Optionally, a plurality of connecting rods are connected to the bottom of the industrial camera, and the industrial camera is connected to a ring light source through the plurality of connecting rods.

[0012] Optionally, an industrial computer is also included, and the industrial camera, the top cylinder and the solenoid valve are all electrically connected to the industrial computer.

[0013] A tray forming method, based on the above-mentioned tray forming device, comprises the following steps:

[0014] Filling the glass fiber scrap into the corresponding forming mold at the first station; wherein the first station is a station for filling the glass fiber scrap located between the hot pressing mechanism and the industrial camera on the rotary workbench;

[0015] The rotary table is rotated to rotate the forming mold filled with the glass fiber scrap to the second station; wherein the second station is the station on the rotary table directly below the hot pressing mechanism;

[0016] The hot pressing mechanism is moved downward and extended into the corresponding forming mold to hot press the fiberglass scrap into a fiberglass tray, and at the same time, the fiberglass scrap is loaded into the empty forming mold at the first station;

[0017] The rotary table is rotated to rotate the forming mold with the glass fiber tray to the third station; wherein the third station is a station on the rotary table directly below the industrial camera;

[0018] Use an industrial camera to take a picture of the forming mold currently located at the third station to identify and obtain an image of the glass fiber tray;

[0019] Process the image of the fiberglass pallet to identify the defect information on the edge of the fiberglass pallet in the image, and determine whether the current fiberglass pallet is a qualified product based on the defect information;

[0020] If the current fiberglass pallet is a qualified product, the fiberglass pallet will be demoulded and taken out. If it is not a qualified product, the unqualified fiberglass pallet will continue to be rotated to the second station, and the unqualified fiberglass pallet will be filled around it through the filling device, and then the hot pressing mechanism will be moved down to perform secondary molding on the unqualified fiberglass pallet.

[0021] Optionally, the processing of the image of the fiberglass pallet to identify defect information on the edge of the fiberglass pallet in the image, and determining whether the current fiberglass pallet is a qualified product based on the defect information, includes:

[0022] Perform grayscale processing and binarization on the image of the fiberglass tray to obtain a black and white image;

[0023] The black and white image is evenly divided into four sub-images, and four rectangular frames of equal area are constructed according to the outlines of the four sub-images;

[0024] Obtain the effective areas S1, S2, S3, and S4 of the outlines in the four sub-images within the rectangular frame respectively;

[0025] Get the total area S' and compare it with the threshold area S m Compare, if the total area S'<threshold area S m , then the current fiberglass pallet is judged to be unqualified. If the total area S' ≥ the threshold area S m , then proceed to the next step; where the threshold area S m The preset qualified value of the single-side area of ​​the fiberglass pallet is the total area S' = S1 + S2 + S3 + S4;

[0026] The effective areas S1, S2, S3, and S4 are respectively compared with the threshold area S n Compare, if any effective area among S1, S2, S3, S4 is smaller than the threshold area S n , then the current fiberglass pallet is judged to be unqualified. If the effective areas S1, S2, S3, and S4 are all greater than the threshold area S n , then the current fiberglass pallet is judged to be a qualified product; where the threshold area S n The area of ​​the preset rectangular box.

[0027] The beneficial effects that can be achieved by this application are as follows:

[0028] After the glass fiber pallet is produced by the cooperation of the hot pressing mechanism and the forming mold, the forming mold of the produced glass fiber pallet is rotated as a whole to the bottom of the industrial camera under the rotation of the rotating worktable. The industrial camera can take pictures of the glass fiber pallet after molding in the forming mold to identify the defects of the current glass fiber pallet. If there is no defect or the defect meets the process requirements, the current glass fiber pallet can be demolded and taken out. If the defect is large and does not meet the process requirements, it is not necessary to demold, and the unqualified glass fiber pallet is rotated to the bottom of the hot pressing mechanism for the second time under the rotation of the rotating worktable. The edge of the glass fiber pallet in the forming mold directly under the hot pressing mechanism is filled by the filling device, and then the filled glass fiber pallet is secondary molded by the hot pressing mechanism to finally produce a glass fiber pallet with higher integrity. Based on the industrial camera and the use of machine vision recognition technology, the present application can accurately judge the defects of the glass fiber pallet after the first molding, and the recognition is efficient and accurate, avoiding human misjudgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the specific embodiments of this application or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0030] Figure 1 This is a schematic structural diagram of a tray forming device in an embodiment of the present application;

[0031] Figure 2 Schematic diagram of the internal structure of the forming mold in the embodiment of the present application;

[0032] Figure 3 Schematic diagram of the arrangement of the forming mold on the rotating worktable in the embodiment of the present application (top view);

[0033] Figure 4 This is a schematic structural diagram of a fiberglass tray obtained after secondary molding in an embodiment of the present application;

[0034] Figure 5 is a schematic diagram of a black and white image of a corresponding glass fiber tray obtained in an embodiment of the present application;

[0035] Figure 6 This is a schematic diagram of dividing a black and white image into four sub-images in an embodiment of the present application.

[0036] Reference numerals:

[0037] 110-rotating workbench, 120-forming mold, 121-limiting step, 130-frame, 140-hot pressing mechanism, 141-telescopic cylinder, 142-pressing plate, 143-second heating plate, 144-second temperature controller, 150-industrial camera, 160-filling device, 161-material box, 162-solenoid valve, 163-discharge pipe, 170-movable plate, 180-top cylinder, 190-first heating plate, 210-first temperature controller, 220-material pump, 230-first First material pipe, 240-second material pipe, 250-mixing device, 251-tank body, 252-feeding hopper, 253-first motor, 254-rotating shaft, 255-spiral stirring element, 256-scraper, 260-support column, 270-rotation drive mechanism, 271-second motor, 272-driving gear, 273-driven gear ring, 280-connecting rod, 290-ring light source, 310-industrial computer, 320-fiberglass tray, 321-fiberglass board, 322-filling layer.

[0038] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0041] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0043] Example 1

[0044] Reference Figures 1-4 The present embodiment provides a tray forming device, comprising a rotary table 110, a plurality of forming molds 120, a frame 130, a hot pressing mechanism 140, an industrial camera 150, and a filling device 160; the plurality of forming molds 120 are arranged on the top of the rotary table 110, and the plurality of forming molds 120 are distributed in a circular array around the center of the rotary table 110; the rotary table 110 is located within the frame 130; the hot pressing mechanism 140 is arranged at the top of the frame 130, and is used to extend into the corresponding forming mold 120 to hot press-form a glass fiber tray 320; the industrial camera 150 is arranged at the top of the frame 130, and is used to take pictures of the glass fiber tray 320 formed in the forming mold 120 to identify defects in the current glass fiber tray 320; the filling device 160 is arranged at the top of the frame 130, and is used to fill the glass fiber tray 320 that needs to be secondary molded in the forming mold 120 directly below the hot pressing mechanism 140.

[0045] In this embodiment, after the glass fiber tray 320 is produced by the cooperation of the hot pressing mechanism 140 and the forming mold 120, the forming mold 120 with the produced glass fiber tray 320 is rotated as a whole to the bottom of the industrial camera 150 under the rotation of the rotating workbench 110. The industrial camera 150 can take a picture of the glass fiber tray 320 after being formed in the forming mold 120 to obtain an image. After processing the image, the defect of the current glass fiber tray 320 can be identified. If there is no defect or the defect meets the process requirements, it is a qualified product. The current glass fiber tray 320 can be demoulded and taken out. If the defect is large and does not meet the process requirements, it is a defective product. , there is no need to demold, and the unqualified fiberglass tray 320 is rotated for a second time to the bottom of the hot pressing mechanism 140 under the rotation of the rotating workbench 110, and the edge of the fiberglass tray 320 in the forming mold 120 under the hot pressing mechanism 140 is filled by the filling device 160, and then the filled fiberglass tray 320 is secondary molded by the hot pressing mechanism 140, and finally a fiberglass tray 320 with higher integrity is obtained. This embodiment uses machine vision recognition technology based on the industrial camera 150 to accurately determine the defect status of the fiberglass tray 320 after the first molding, and the recognition is efficient and accurate, avoiding human misjudgment.

[0046] It should be noted that the filler device 160 is filled with filler, which can be made by mixing waste materials such as sawdust or straw powder with adhesives such as urea-formaldehyde resin, thereby promoting the secondary utilization of waste materials such as sawdust or straw powder, and being more energy-saving and environmentally friendly; the fiberglass tray 320 obtained after secondary molding is as follows Figure 4 As shown, the main part is a glass fiber board 321, and the edge of the glass fiber board 321 is connected to a filling layer 322. The material of the filling layer 322 is sawdust or straw powder mixed with adhesives such as urea-formaldehyde resin. Here, taking the setting of 4 groups of forming molds 120 as an example, through the rotation of the rotating workbench 110, the workstations of multiple forming molds 120 can be switched, so that the filling of glass fiber edge materials, hot pressing of glass fiber trays 320 and defect detection of glass fiber trays 320 can be carried out at the same time, thereby also having the effect of improving production efficiency.

[0047] As an optional embodiment, the forming mold 120 is open at the top and bottom, and a limiting step 121 is provided at the bottom of the forming mold 120. A movable plate 170 is provided on the limiting step 121 to fit the inner wall of the forming mold 120. The movable plate 170 and the inner wall of the forming mold 120 form a cavity that cooperates with the hot pressing mechanism 140. The bottom of the movable plate 170 is connected to a pushing cylinder 180 provided on the rotating workbench 110. The pushing cylinder 180 is used to push the movable plate 170 out of the forming mold 120. A first heating plate 190 is provided on the inner wall of the forming mold 120. The first heating plate 190 is electrically connected to a first temperature controller 210 located on the outer wall of the forming mold 120.

[0048] In this embodiment, when the glass fiber tray 320 completes hot pressing molding and passes the inspection of the industrial camera 150, the movable plate 170 can be driven to move upward by the push cylinder 180, thereby pushing the glass fiber tray 320 on the movable plate 170 out of the molding mold 120, and the staff can quickly remove the glass fiber tray 320, and the push cylinder 180 drives the movable plate 170 to move down to the limit step 121 to reset, which has the function of automatic demolding, and the operation is convenient and fast. When demolding, a release agent can be appropriately added to make the glass fiber tray 320 demold more smoothly; the first heating plate 190 can heat the glass fiber edge material, and at the same time, combined with the heating effect of the hot pressing mechanism 140, the glass fiber edge material can be fully and evenly heated to melt it, which is convenient for subsequent pressing and molding. The density after molding is high, and the heating temperature of the first heating plate 190 can be controlled by the first temperature controller 210, which is convenient for temperature control according to process requirements.

[0049] As an optional embodiment, the hot pressing mechanism 140 includes a telescopic cylinder 141 arranged at the top of the frame 130, the bottom of the telescopic cylinder 141 is connected to a pressure plate 142, the bottom of the pressure plate 142 is connected to a second heating plate 143, the second heating plate 143 is electrically connected to a second temperature controller 144, and the second temperature controller 144 is arranged at the top of the pressure plate 142.

[0050] In this embodiment, when hot pressing is required, the telescopic cylinder 141 drives the pressing plate 142 and the second heating plate 143 to move downward and extend into the forming mold 120. The second heating plate 143 with a certain temperature is used to extrude the upper surface of the glass fiber edge material in the forming mold 120 and maintain it for a certain time, thereby realizing automatic hot pressing. The second temperature controller 144 can adjust the temperature of the second heating plate 143 to meet different process requirements.

[0051] As an optional embodiment, the filling device 160 includes a material box 161 arranged on the top of the frame 130, the material box 161 is filled with filling material, and a plurality of solenoid valves 162 are arranged at the bottom of the material box 161. The solenoid valves 162 are all connected to a discharge pipe 163, and the bottom of the discharge pipe 163 is an arc section. The arc sections of the plurality of discharge pipes 163 are respectively close to the edge of the forming mold 120 to fill the filling material to the surrounding of the fiberglass tray 320.

[0052] In this embodiment, when it is necessary to fill the glass fiber tray 320 with filler material, the solenoid valve 162 is opened, and the filler material in the material box 161 can be discharged along the vertical discharge pipe 163. Finally, when it flows out from the arc section of the discharge pipe 163, it can flow smoothly to the inner edge position of the forming mold 120 under the action of inertia, and the arc section of the discharge pipe 163 will not conflict with the hot pressing mechanism 140, thereby ensuring smooth discharge.

[0053] It should be noted that a discharge pump may be provided between the bottom of the material box 161 and the solenoid valve 162 to ensure rapid discharge of the filling material.

[0054] As an optional embodiment, a material pump 220 is provided on the top of the material box 161, and the material pump 220 is respectively connected to a first material pipe 230 and a second material pipe 240, the first material pipe 230 extends into the material box 161, and the second material pipe 240 is connected to a mixing device 250; wherein, the mixing device 250 includes a tank body 251, the second material pipe 240 is connected to the bottom of the tank body 251, a feeding hopper 252 is provided on the top of the tank body 251, a first motor 253 is provided on the top of the tank body 251, the first motor 253 is connected to a rotating shaft 254 located in the tank body 251, a spiral stirring member 255 is provided on the rotating shaft 254, and a plurality of scrapers 256 are provided at the bottom of the rotating shaft 254, and the scrapers 256 are close to the inner side wall of the tank body 251 and the inner bottom of the tank body 251 at the same time.

[0055] In this embodiment, the mixing device 250 is used to prepare the filler. Under the action of the feed pump 220, the filler in the lower mixing device 250 can be transported to the material tank 161 through the second feed pipe 240 and the first feed pipe 230. This eliminates the need for personnel to climb up to deliver the filler to the material tank 161, thereby improving safety. When preparing the filler, waste materials such as sawdust or straw powder (80-90%) and adhesive (10-20%) are added to the tank body 251 through the feeding hopper 252. The first motor 253 drives the rotating shaft 254 to rotate, and the spiral stirring element 255 thoroughly mixes the mixture to produce the filler. The scraper 256 is L-shaped and can scrape away the mixture adhering to the inner wall and bottom of the tank body 251, preventing accumulation of the mixture and insufficient mixing, thereby ensuring a good mixing effect.

[0056] As an optional embodiment, it also includes a base, on which a support column 260 is movably provided, the rotating workbench 110 is connected to the top of the support column 260, and the base is provided with a rotation drive mechanism 270 for driving the support column 260 to rotate; wherein the rotation drive mechanism 270 includes a second motor 271 provided on the base, the second motor 271 is connected to a driving gear 272, the driving gear 272 is meshedly connected to a driven gear ring 273, and the driven gear ring 273 is fixedly sleeved on the support column 260.

[0057] In this embodiment, the support column 260 can be driven to rotate by the rotary drive mechanism 270, thereby driving the rotary worktable 110 to rotate a corresponding angle to realize automatic switching of the working position of the forming mold 120. During specific operation, the second motor 271 (which can be a stepper motor or a servo motor) drives the driving gear 272 to rotate, thereby driving the driven gear ring 273 and the support column 260 to rotate synchronously, with a high degree of automation and convenient for precise control.

[0058] As an optional embodiment, the industrial camera 150 is connected to a plurality of connecting rods 280 at its bottom. A ring light source 290 is connected to the industrial camera 150 via these connecting rods 280. The ring light source 290 can improve the exposure of images captured by the industrial camera 150, thereby improving the clarity of the captured images and facilitating subsequent accurate recognition of image features. The ring light source 290 includes a ring-shaped lampshade, the inner wall of which is provided with a ring of LED lights. The color of the LED lights is adjustable to suit different photography needs.

[0059] As an optional implementation, an industrial computer 310 is further included, and the industrial camera 150 , the top cylinder 180 and the solenoid valve 162 are all electrically connected to the industrial computer 310 .

[0060] In this embodiment, the industrial camera 150 can send the collected image to the industrial computer 310. The industrial computer 310 has built-in image processing software, which can quickly identify and process the collected image, thereby obtaining the defect information of the fiberglass tray 320 to determine whether the fiberglass tray 320 is qualified. If it is qualified, the industrial computer 310 sends a signal to the top cylinder 180, and the top cylinder 180 pushes the qualified fiberglass tray 320 out of the mold. If it is unqualified, the industrial computer 310 marks the current molding mold 120. When the molding mold 120 rotates a second time to the bottom of the hot pressing mechanism 140, the industrial computer 310 sends a signal to the solenoid valve 162, and the solenoid valve 162 opens to allow the filler to enter the molding mold 120. The entire process is highly automated, reducing labor costs.

[0061] It should be noted that the first motor 253 , the second motor 271 , the telescopic cylinder 141 , the material pump 220 , the first temperature controller 210 and the second temperature controller 144 are all electrically connected to the industrial computer 310 , thereby achieving more automated control.

[0062] Example 2

[0063] Reference Figures 1-6 This embodiment provides a tray forming method, based on the above-mentioned tray forming device, including the following steps:

[0064] Filling the glass fiber scrap into the corresponding forming mold 120 at the first station; wherein the first station is a station for filling the glass fiber scrap located between the hot pressing mechanism 140 and the industrial camera 150 on the rotary table 110;

[0065] The rotary table 110 is rotated to rotate the forming mold 120 filled with the glass fiber scrap to the second station; wherein the second station is a station on the rotary table 110 directly below the hot pressing mechanism 140;

[0066] The hot pressing mechanism 140 is moved downward and extended into the corresponding forming mold 120 to hot press the fiberglass scrap into the fiberglass tray 320 , and at the same time, the fiberglass scrap is loaded into the empty forming mold 120 at the first station;

[0067] The rotary table 110 is rotated to rotate the forming mold 120 with the glass fiber tray 320 to the third station; wherein the third station is the station on the rotary table 110 directly below the industrial camera 150;

[0068] The forming die 120 currently located at the third station is photographed by the industrial camera 150 to identify and obtain an image of the glass fiber tray 320;

[0069] Processing the image of the fiberglass tray 320 to identify defect information on the edge of the fiberglass tray 320 in the image, and determining whether the current fiberglass tray 320 is a qualified product based on the defect information;

[0070] If the current fiberglass tray 320 is a qualified product, the fiberglass tray 320 is demolded and taken out; if it is not a qualified product, the unqualified fiberglass tray 320 is further rotated to the second station, and the unqualified fiberglass tray 320 is filled with stuffing by the filling device 160, and then the hot pressing mechanism 140 is moved down to perform secondary molding on the unqualified fiberglass tray 320.

[0071] In this embodiment, when the glass fiber scraps are loaded into the corresponding forming mold 120, they can be loaded manually or automatically by using corresponding automated equipment. Then, the forming mold 120 filled with the glass fiber scraps can be rotated to the bottom of the hot pressing mechanism 140 under the rotation of the rotary workbench 110, and extended into the forming mold 120 below (equivalent to the lower mold) through the hot pressing mechanism 140 (equivalent to the upper mold, which has been heated to 160-180°C). Then, the temperature is kept constant for about 30 minutes, so that the messy glass fiber scraps are hot-pressed into a plate-shaped glass fiber tray 320. Then, the rotary workbench 110 continues to rotate a certain angle in the same direction, so that the forming mold 120 that has formed the glass fiber tray 320 is rotated to the bottom of the industrial camera 150. The industrial camera 150 takes a picture of the current forming mold 120, thereby identifying and obtaining the image of the glass fiber tray 320, and then the glass The image of the fiberglass tray 320 is processed to identify defect information on the edge of the fiberglass tray 320 in the image. According to the defect information, it can be quickly determined whether the current fiberglass tray 320 is a qualified product. If it is a qualified product, the fiberglass tray 320 is demoulded and taken out. If it is not a qualified product, the unqualified fiberglass tray 320 is further rotated to the second station, and the unqualified fiberglass tray 320 is filled with fillers by the filling device 160, and then the hot pressing mechanism 140 is moved down to perform secondary molding on the unqualified fiberglass tray 320, thereby ensuring the molding quality of the fiberglass tray 320 and ensuring the reasonable use of filling materials to avoid waste caused by excessive use. At the same time, the filling of fiberglass edge materials, hot pressing molding of the fiberglass tray 320 and defect detection of the fiberglass tray 320 can be carried out simultaneously, which has the effect of improving production efficiency and achieving multiple goals at one stroke.

[0072] As an optional embodiment, the image of the fiberglass tray 320 is processed to identify defect information on the edge of the fiberglass tray 320 in the image, and based on the defect information, whether the current fiberglass tray 320 is a qualified product is determined, including:

[0073] Performing grayscale processing and binarization processing on the image of the fiberglass tray 320 to obtain a black and white image;

[0074] The black and white image is evenly divided into four sub-images, and four rectangular frames of equal area are constructed according to the outlines of the four sub-images;

[0075] Obtain the effective areas S1, S2, S3, and S4 of the outlines in the four sub-images within the rectangular frame respectively;

[0076] Get the total area S' and compare it with the threshold area S m Compare, if the total area S'<threshold area S m , then it is determined that the current glass fiber tray 320 is not a qualified product. If the total area S' ≥ the threshold area S m, then proceed to the next step; where the threshold area S m is the preset qualified value of the single-side area of ​​the fiberglass tray 320, the total area S'=S1+S2+S3+S4;

[0077] The effective areas S1, S2, S3, and S4 are respectively compared with the threshold area S n Compare, if any effective area among S1, S2, S3, S4 is smaller than the threshold area S n , then it is determined that the current glass fiber tray 320 is not a qualified product. If the effective areas S1, S2, S3, and S4 are all greater than the threshold area S n , then it is determined that the current glass fiber tray 320 is a qualified product; wherein the threshold area S n The area of ​​the preset rectangular box.

[0078] In this embodiment, when detecting defect information corresponding to the edge of the glass fiber tray 320 in the image, the image of the glass fiber tray 320 is first gray-scale processed and binarized to obtain a black and white image (eg, Figure 5 As shown), the black and white image is convenient for subsequent feature extraction and recognition. Then, the black and white image is segmented to evenly divide it into four sub-images. When segmenting, the segmentation should be performed at the center of the complete rectangular outline of the fiberglass tray 320. The segmentation line is perpendicular to the edge of the rectangular outline, so that the four sub-images after segmentation correspond to the four corners of the fiberglass tray 320. The four corners of the fiberglass tray 320 are most likely to be defective, so they need to be detected separately. Then, based on the outer contours in the four sub-images, four rectangular frames of equal area are constructed respectively. The rectangular frame is one-fourth of the complete rectangular outline of the fiberglass tray 320. After obtaining the effective areas S1, S2, S3, and S4 of the outer contours in the four sub-images within the rectangular frame, the defect area can be reflected from the side. First, the total area S' after adding the effective areas S1, S2, S3, and S4 is calculated. The total area S' is equal to the threshold area S preset in the database. m Compare, if the total area S'<threshold area S m , indicating that the overall defect area is large, it is unqualified, and further detection is stopped to reduce the data processing pressure. Otherwise, it goes to the next step of detection; since there may be a single defect area that is large in the four sub-images, while the other defect areas are very small, the final total area S' can still meet the qualified value, so further detection is required, that is, the effective areas S1, S2, S3, and S4 are respectively compared with the threshold area S n For comparison, only when the effective areas S1, S2, S3, and S4 are all larger than the threshold area S n When , the current fiberglass tray 320 is qualified, thereby achieving accurate and effective detection and identification of edge defect information of the fiberglass tray 320, and taking into account various defect situations, thereby ensuring the accuracy and comprehensiveness of defect detection.

[0079] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A tray forming method, characterized in that: Based on a tray forming device, the device includes a rotary worktable; a plurality of forming molds, wherein the plurality of forming molds are arranged on the top of the rotary worktable and are distributed in a circular array around the center of the rotary worktable; a frame, wherein the rotary worktable is located within the frame; a hot pressing mechanism, wherein the hot pressing mechanism is arranged on the top of the frame and is used to extend into the corresponding forming mold to hot press-form a fiberglass tray; an industrial camera, wherein the industrial camera is arranged on the top of the frame and is used to take pictures of the fiberglass tray formed in the forming mold to identify defects in the current fiberglass tray; a filling device, wherein the filling device is arranged on the top of the frame and is used to fill the fiberglass tray that needs to be secondary molded in the forming mold directly below the hot pressing mechanism; The method comprises the following steps: Filling the glass fiber scrap into the corresponding forming mold at the first station; wherein the first station is a station for filling the glass fiber scrap located between the hot pressing mechanism and the industrial camera on the rotary workbench; The rotary table is rotated to rotate the forming mold filled with glass fiber scrap to a second station; wherein the second station is a station on the rotary table directly below the hot pressing mechanism; The hot pressing mechanism is moved downward and extended into the corresponding forming mold to hot-press the fiberglass scrap into a fiberglass tray, and at the same time, the fiberglass scrap is loaded into the empty forming mold at the first station; The rotary table is rotated to rotate the forming mold with the glass fiber tray to a third station; wherein the third station is a station on the rotary table directly below the industrial camera; Taking a picture of the forming mold currently located at the third station by the industrial camera to identify and obtain an image of the glass fiber tray; The image of the fiberglass pallet is processed to identify defect information on the edge of the fiberglass pallet in the image, and based on the defect information, whether the current fiberglass pallet is a qualified product is determined; the method includes: performing grayscale processing and binarization processing on the image of the fiberglass pallet to obtain a black and white image; evenly dividing the black and white image into four sub-images, and constructing four rectangular frames of equal area based on the outlines in the four sub-images; respectively obtaining the effective areas S1, S2, S3, and S4 of the outlines in the four sub-images within the rectangular frames; obtaining a total area S', and comparing the total area S' with the threshold area S m Compare, if the total area S'<threshold area S m , then the current fiberglass pallet is judged to be unqualified. If the total area S' ≥ the threshold area S m , then proceed to the next step; wherein the threshold area S m is the preset qualified value of the single surface area of ​​the fiberglass tray, the total area S'=S1+S2+S3+S4; the effective areas S1, S2, S3, S4 are respectively compared with the threshold area S n Compare, if any effective area among S1, S2, S3, S4 is smaller than the threshold area S n , then the current fiberglass pallet is judged to be unqualified. If the effective areas S1, S2, S3, and S4 are all greater than the threshold area S n , then it is determined that the current glass fiber tray is a qualified product; wherein, the threshold area S n is the area of ​​the preset rectangular frame; If the current fiberglass pallet is a qualified product, the fiberglass pallet is demolded and taken out; if it is not a qualified product, the unqualified fiberglass pallet is further rotated to the second station, the unqualified fiberglass pallet is filled with stuffing by the stuffing device, and then the hot pressing mechanism is moved down to perform secondary molding on the unqualified fiberglass pallet.

2. A tray forming method according to claim 1, characterized in that: The forming mold is open at the top and bottom, and a limiting step is provided at the bottom of the forming mold. A movable plate is provided on the limiting step to fit the inner wall of the forming mold. The movable plate and the inner wall of the forming mold form a cavity that cooperates with the hot pressing mechanism. The bottom of the movable plate is connected to a top cylinder provided on the rotating workbench. The top cylinder is used to push the movable plate out of the forming mold. A first heating plate is provided on the inner wall of the forming mold, and the first heating plate is electrically connected to a first temperature controller located on the outer wall of the forming mold.

3. A tray forming method according to claim 2, characterized in that: The hot pressing mechanism includes a telescopic cylinder arranged at the top of the frame, the bottom of the telescopic cylinder is connected to a pressure plate, the bottom of the pressure plate is connected to a second heating plate, the second heating plate is electrically connected to a second thermostat, and the second thermostat is arranged on the top of the pressure plate.

4. A tray forming method according to claim 2, characterized in that: The filling device includes a material box arranged on the top of the frame, the material box is filled with filling material, and multiple solenoid valves are arranged at the bottom of the material box. The solenoid valves are all connected to a discharge pipe, and the bottom of the discharge pipe is an arc section. The arc sections of the multiple discharge pipes are respectively close to the edge of the forming mold to fill the filling material to the surrounding of the fiberglass tray.

5. A tray forming method according to claim 4, characterized in that: A material pump is provided on the top of the material box, and the material pump is connected to a first material pipe and a second material pipe respectively. The first material pipe extends into the material box, and the second material pipe is connected to a mixing device; wherein, The mixing device includes a tank body, the second material pipe is connected to the bottom of the tank body, a feeding hopper is provided on the top of the tank body, a first motor is provided on the top of the tank body, the first motor is connected to a rotating shaft located in the tank body, a spiral stirring member is provided on the rotating shaft, and a plurality of scraping blades are provided at the bottom of the rotating shaft, and the scraping blades are close to the inner wall of the tank body and the bottom of the tank body at the same time.

6. A tray forming method according to claim 1, characterized in that: It also includes a base, on which a support column is movably provided, the rotating workbench is connected to the top of the support column, and the base is provided with a rotation drive mechanism for driving the support column to rotate; wherein, The rotary drive mechanism includes a second motor arranged on the base, the second motor is connected to a driving gear, the driving gear is meshedly connected to a driven gear ring, and the driven gear ring is fixedly sleeved on the support column.

7. A tray forming method according to claim 1, characterized in that: A plurality of connecting rods are connected to the bottom of the industrial camera, and the industrial camera is connected to a ring light source through the plurality of connecting rods.

8. A tray forming method according to claim 4, characterized in that: It also includes an industrial computer, and the industrial camera, the top cylinder and the solenoid valve are all electrically connected to the industrial computer.

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