Rotary in-mold coating mechanism, injection molding coating equipment and control system of injection molding coating equipment

Abstract

The utility model relates to the technical field of injection molding equipment, in particular to a rotary type in-mold coating mechanism, injection molding coating equipment and a control system.The rotary type in-mold coating mechanism comprises a frame, a rotating part, mold plates and a rotating driver, the rotating part is movably arranged on the frame, and the mold plates comprise the first mold plate and the second mold plate; the first mold plate is arranged on the rotating piece, the second mold plate and the first mold plate are correspondingly arranged on the frame, and the first mold plate and the second mold plate are matched to form a forming mold cavity and a coating mold cavity; the rotation driver is connected with the rotating piece and used for driving the rotating piece to rotate. According to the rotary in-mold coating mechanism, the base material in the forming cavity can be transferred to the coating cavity through rotation, a new base material is injected into the forming cavity synchronously during coating, continuous production and coating are achieved, the production efficiency is improved, and the problems of deformation and the like caused by secondary base material conveying are solved.

Description

Technical Field

[0001] The present application relates to the technical field of injection molding equipment, and in particular to a rotary in-mold coating mechanism, injection molding coating equipment, and a control system thereof. Background Art

[0002] Most coatings currently on the market are applied after the product is formed, either by spraying, roller coating, or curtain coating. In-mold painting, on the other hand, involves spraying inside the mold before the product is formed. The main difference between this technique and conventional painting processes lies in the timing of the coating application.

[0003] Existing in-mold painting and coating devices still have some limitations. For example, Chinese patent CN110978387A discloses a multi-material injection molding machine and a multi-material injection molding method thereof, which provides a movable mold group and a fixed mold group. The fixed mold group includes a conventional injection fixed mold base and a polyurethane fixed mold base, and the movable mold group includes a conventional injection movable mold base and a polyurethane fixed mold base. The mold is first closed to inject conventional plastic part a. After the mold is opened, plastic part a is moved to the PU fixed mold base. The mold is closed again to perform PU layer injection molding on plastic part a, and conventional plastic part b is injected at the same time. The mold is opened again and b is moved to the PU fixed mold base. Finally, the mold is closed for the third time to obtain plastic part a', and the mold is opened for the third time to remove a'. In this technical solution, the movement process of the plastic part between the fixed mold bases depends on the operation of a robot arm. The position of the plastic part is changed, and the plastic part needs to be clamped on the fixed mold base by a clamp. That is, the multi-material injection molding machine provided by this patent is complex and has low production efficiency. In addition, due to the need for secondary positioning of the product, positioning errors are prone to occur.

[0004] Chinese patent CN114147915A discloses an in-mold spraying system and a process method thereof, including an injection machine, a PU injection device and a mold temperature control unit. The injection machine includes a hopper, an injection component, a front template, a movable template and a clamping mechanism. A first half mold is provided on the front template, and a second half mold and a third half mold are provided on the movable template. The second half mold and the third half mold are respectively clamped with the first half mold to form a substrate injection mold cavity and a PU injection mold cavity. A double-inclined mixing nozzle connected to the PU injection device is installed on the side of the third half mold. The outside of the double-inclined mixing nozzle is obliquely sealed and connected to the side of the third half mold and is obliquely sealed and docked with the side of the first half mold during the clamping process. The internal injection axis of the double-inclined mixing nozzle is inclined relative to the axis of the injection channel inside the PU injection mold cavity. However, the mold of the in-mold spraying system provided by this patent moves left and right, that is, the substrate is first injected and then the mold is moved to the PU cavity for painting. After painting is completed, the mold is opened, the injection molding machine demolding robot completes the removal, and the mold is moved to the substrate cavity to inject the substrate. This alternating method can only produce a single cavity at a time, and the production efficiency is low. Utility Model Content

[0005] In order to solve one or more problems in the prior art, the present application provides a rotary in-mold coating mechanism in a first aspect, comprising:

[0006] frame;

[0007] a rotating member movably disposed on the frame;

[0008] A template, comprising a first template and a second template, wherein the first template is disposed on the rotating member, and the second template is disposed on the frame corresponding to the first template, and the first template and the second template cooperate to form a molding cavity and a painting cavity; and

[0009] A rotary driver is connected to the rotating member and is used to drive the rotating member to rotate.

[0010] In some embodiments of the present application, the rotating member includes a base and a mounting plate, the base is movably disposed on the frame, the mounting plate is disposed on at least one surface of the base, and the first template is mounted on the mounting plate.

[0011] In some embodiments of the present application, the first template includes a first half mold and a second half mold, and the first half mold and the second half mold are installed on the mounting plate; the second template includes a third half mold, a fourth half mold and a mounting plate, and the third half mold and the fourth half mold are installed on the frame through the mounting plate.

[0012] In some embodiments of the present application, the first half mold and the second half mold are both arranged on the mounting plate, and the third half mold and the fourth half mold are both correspondingly arranged on a side of the mounting plate facing the rotating member.

[0013] In some embodiments of the present application, the rotary driver is movably connected to the rotating portion of the mounting disk to drive the rotating portion of the mounting disk to rotate circumferentially.

[0014] In some embodiments of the present application, the rotating member includes at least one positioning pin and at least one limiting member, the positioning pin is arranged on the mounting disk to fix the first template, the limiting member is arranged on the non-rotating part of the mounting disk, and the limiting member is clamped with the mounting disk to limit the circumferential rotation of the rotating part of the mounting disk.

[0015] In some embodiments of the present application, the first half mold and the second half mold are respectively arranged on the mounting plates on both sides of the base, and the third half mold and the fourth half mold are respectively installed on the frames on both sides of the rotating member through mounting plates.

[0016] In some embodiments of the present application, the rotary driver is movably connected to the side wall of the base to drive the rotating member to rotate in an overturned manner.

[0017] The second aspect of the present application provides an injection molding and coating equipment, which includes the mechanism described in the above embodiment, and also includes an injection molding device and a paint injection device. The injection molding device is connected to the molding cavity and is used for injection molding to prepare a substrate. The paint injection device is connected to the coating cavity and is used for surface treatment of the substrate.

[0018] The third aspect of the present application provides an injection molding and coating equipment control system, including the above-mentioned injection molding and coating equipment, and also including a main control device and a sensor device. The main control device is used to control the movement of the rotating part, and the sensor device is used to sense the position of the rotating part and output a sensing signal to the main control device.

[0019] One or more of the above embodiments of the present application have at least the following beneficial effects:

[0020] The rotary in-mold coating mechanism provided by this application enables the injection molding machine to transfer the substrate prepared in the molding cavity to the coating cavity by rotation after completing the injection, pressure holding, filling, plasticization and cooling of the substrate, thereby achieving continuous production and coating, avoiding the problem of low production efficiency of a single cavity caused by the alternating method. In addition, the application of the rotary in-mold coating mechanism also realizes a one-step in-mold coating process, eliminating the steps of secondary transportation and installation, and reducing the problems of substrate deformation and reduced efficiency caused by transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0022] Figure 1 is a structural schematic diagram of a rotary in-mold coating mechanism provided by an exemplary embodiment of the present application;

[0023] Figure 2 is a structural schematic diagram of a rotary in-mold coating mechanism provided by another exemplary embodiment of the present application;

[0024] Figure 3 1 is a structural schematic diagram of a rotating member 12 of a rotary in-mold coating mechanism 1 provided in one embodiment of the present application;

[0025] Figure 4 1 is a structural diagram of a rotary in-mold coating mechanism 1 provided in another embodiment of the present application;

[0026] Figure 5 yes Figure 4A schematic structural diagram of the rotary turntable 122 of the rotary in-mold coating mechanism 1;

[0027] Figure 6 is a structural schematic diagram of a rotary in-mold coating mechanism 1 provided in another embodiment of the present application;

[0028] Figure 7 This is a schematic diagram of the working process of a rotary in-mold coating mechanism 1 provided in one embodiment of the present application;

[0029] Figure 8 1 is a schematic diagram of the working process of a rotary in-mold coating mechanism 1 provided by another exemplary embodiment of the present application;

[0030] Figure 9 It is a structural schematic diagram of an injection coating device 2 provided by an exemplary embodiment of the present application;

[0031] Figure 10 This is a control logic diagram of an injection molding and coating equipment control system provided by one embodiment of the present application;

[0032] Figure 11 This is a control logic diagram of an injection molding and coating equipment control system provided in another embodiment of the present application.

[0033] Reference numerals:

[0034] 1. Rotary in-mold coating mechanism;

[0035] 11. frame; 111. frame strip;

[0036] 12. Rotating member; 121. Base; 122. Mounting plate; 1221. Rotating portion; 1222. Non-rotating portion; 123. Positioning pin; 124. Limiting member;

[0037] 13. Template; 131. First template; 1311. First mold half; 1312. Second mold half; 132. Second template; 1321. Third mold half; 1322. Fourth mold half; 1323. Mounting plate; 133. Molding cavity; 134. Painting cavity;

[0038] 14. Rotary drive;

[0039] 15. Mould ejection device;

[0040] 2. Injection molding and coating equipment; 21. Injection molding device; 22. Paint injection device; 23. Robot. DETAILED DESCRIPTION

[0041] Embodiments of the present application will be described in detail below, examples of which are illustrated in the accompanying drawings. Generally, the components of the embodiments of the present application described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but rather merely represents selected embodiments of the present application.

[0042] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0043] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0045] The following will be combined Figure 1 and Figure 11 The technical solution of the present application is described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0046] like Figure 1 FIG. 1 is a structural diagram of a rotary in-mold coating mechanism provided by an embodiment of the present application. Figure 2 The figure shows the structure of the rotary in-mold coating mechanism provided by another embodiment of the present application. Figure 1 and Figure 2In the first aspect of the present application, a rotary in-mold coating mechanism 1 is provided, which includes: a frame 11, a rotating part 12, a template 13 and a rotary driver 14. The rotating part 12 is movably arranged on the frame 11; the template 13 includes a first template 131 and a second template 132. The first template 131 is arranged on the rotating part 12, and the second template 132 is arranged on the frame 11 corresponding to the first template 131. Through the left and right movement and rotation of the rotating part 12, the first template 131 and the second template 132 on the rotating part 12 can cooperate to form a molding cavity 133 and a coating cavity 134; the rotary driver 14 is connected to the rotating part 12 for driving the rotating part 12 to rotate.

[0047] In some embodiments of the present application, reference is made to Figure 1 As shown, there is space in the middle of the frame 11 to accommodate the left and right movement of the rotating member 12. Frame bars 111 are located above and below the frame 11 to support the rotating member 12 and the second template 132. In some embodiments of the present application, a track may be provided on the frame 11 to allow the rotating member 12 to move along the extension direction of the frame bars 111. The second template 132 should be positioned to correspond to the first template 131 on the rotating member 12 to facilitate mold closing and opening operations. The design of the frame 11 should ensure smooth and precise movement of the rotating member 12.

[0048] In some embodiments of the present application, reference is made to Figure 2 As shown, the second template 132 is also movably provided on the frame 11 and can move along the extension direction of the frame strip 111 .

[0049] In some embodiments of the present application, the rotary in-mold coating mechanism 1 further includes a driving device (not shown in the figure), which can drive the rotating part 12 and the second template 132 to move along the length direction of the frame strip 111, thereby realizing mold closing and mold opening operations. The driving device can adopt a driver such as a motor, and this embodiment does not limit this.

[0050] In some embodiments of the present application, the molding cavity 133 is used for preliminary molding of the product. After the product is molded, the rotation member 12 is used to transfer the mold cavity 133 to the coating cavity 134 for surface treatment of the product.

[0051] In some embodiments of the present application, a rotary actuator 14 is movably connected to the rotary member 12 or connected via a transmission component, and is responsible for driving the rotary member 12 to perform precise rotational motions, thereby achieving rapid switching between mold cavities. The rotary actuator 14 can be driven by a servo motor, a stepper motor, a pneumatic motor, or other drive device.

[0052] like Figure 3 FIG2 is a schematic diagram of the structure of the rotating member 12 of the rotary in-mold coating mechanism 1 provided in one embodiment of the present application. In some embodiments of the present application, reference is made to FIG2. Figure 3As shown, the rotating member 12 includes a base 121 and a mounting plate 122 . The base 121 is movably disposed on the frame 11 . The mounting plate 122 is disposed on at least one surface of the base 121 . The first template 131 is mounted on the mounting plate 122 .

[0053] In some embodiments of the present application, the base 121 may adopt a sliding guide rail, a ball bearing or other precision guide rail system to ensure its smooth movement on the frame 11.

[0054] In some embodiments of the present application, the base 121 can be designed in various shapes, such as circular, square, or other polygonal shapes, depending on the spatial layout and mechanical strength requirements of the actual application. To reduce weight and improve stability, the base 121 can be designed to have a hollow structure or be made of lightweight materials.

[0055] In some embodiments of the present application, the mounting plate 122 is provided with multiple threaded holes or clamping devices for securing the first template 131. These fixing points can be flexibly adjusted based on the size and shape of the first template 131 to ensure a secure installation. The first template 131 is secured to the base 121 via the mounting plate 122 and moves with the base 121 to perform operations such as mold closing and opening. The mounting plate 122 can be made of a high-strength metal material, such as aluminum alloy or stainless steel, to ensure durability and stability in high-temperature and high-pressure environments.

[0056] In some embodiments of the present application, in order to improve production efficiency, the connection between the first template 131 and the mounting plate 122 is designed to be quick-release, which facilitates the rapid replacement of different types of templates and reduces downtime.

[0057] like Figure 4 FIG. 1 is a structural diagram of a rotary in-mold coating mechanism 1 provided in another embodiment of the present application. Figure 5 Shown Figure 4 A schematic structural diagram of the first template of the rotary in-mold coating mechanism 1 is shown in FIG. Figure 6 Shown is a structural schematic diagram of a rotary in-mold coating mechanism 1 provided in another embodiment of the present application.

[0058] In some embodiments of the present application, reference is made to Figures 4 to 6 As shown, the first template 131 includes a first half mold 1311 and a second half mold 1312, and the first half mold 1311 and the second half mold 1312 are arranged on the mounting plate 122; the second template 132 includes a third half mold 1321, a fourth half mold 1322 and a mounting plate 1323, and the third half mold 1321 and the fourth half mold 1322 are mounted on the frame 11 through the mounting plate 1323.

[0059] In some embodiments of the present application, reference is made to Figure 4 and Figure 5 As shown, the first half mold 1311 and the second half mold 1312 are both arranged on the rotating part 1221 of the mounting plate 122 on the right side of the rotating member 12, and the third half mold 1321 and the fourth half mold 1322 are both arranged on the left side of the mounting plate 1323 facing the right side of the rotating member 12. The setting positions of the first half mold 1311 and the second half mold 1312 correspond to the setting positions of the third half mold 1321 and the fourth half mold 1322 respectively, that is, the positions of the first half mold 1311 and the third half mold 1321, and the positions of the second half mold 1312 and the fourth half mold 1322 are opposite, so that both pairs of half molds can achieve mold closing operation, or the positions of the first half mold 1311 and the fourth half mold 1322, and the positions of the second half mold 1312 and the third half mold 1321 are opposite, so that both pairs of half molds can achieve mold closing operation.

[0060] like Figure 7 FIG. 1 is a schematic diagram of the workflow of a rotary in-mold coating mechanism provided by an embodiment of the present application; FIG. Figure 8 Shown is a schematic diagram of the workflow of a rotary in-mold coating mechanism provided by another exemplary embodiment of the present application.

[0061] In some embodiments of the present application, see Figure 7 As shown, the rotary driver 14 is movably connected to the center of the rotating portion 1221 of the mounting plate 122 to drive the rotating portion 1221 of the mounting plate 122 to rotate circumferentially around the center. This embodiment does not limit the specific location of the rotary driver 14, as long as the rotary driver 14 can drive the rotating portion 1221 of the mounting plate 122 to rotate through the driving member. In a specific example, refer to Figure 1 As shown, the rotary drive 14 is mounted on top of the base 121 .

[0062] In some embodiments of the present application, reference is made to Figure 3 As shown, the mounting plate 122 may be provided with at least one positioning pin 123 and at least one limiting member 124. The positioning pin 123 is provided on the mounting plate 122 to fix the first template 131. The limiting member 124 is provided on the non-rotating portion 1222 of the mounting plate 122. The limiting member 124 engages with the mounting plate 122 to limit the circumferential rotation of the rotating portion 1221 of the mounting plate 122. The limiting operation is conventional in the art and will not be described in detail in the present embodiment.

[0063] The state before the rotating part 1221 of the mounting disk 122 rotates can be defined as the first state, and the state after the first rotation is the second state. In the first state, the first half mold 1311 on the rotating part 1221 of the mounting disk 122 corresponds to the position of the third half mold 1321, and the second half mold 1312 corresponds to the position of the fourth half mold 1322. In the second state after rotation, the first half mold 1311 on the mounting disk 122 corresponds to the position of the fourth half mold 1322, and the second half mold 1312 corresponds to the position of the third half mold 1321. The rotation angle can be 180° or other required angles, so that the positions of the first half mold 1311 and the second half mold 1312 are exchanged by rotation, and finally the substrate a formed in the molding cavity 133 is transferred to the coating cavity 134.

[0064] The embodiment of the present application does not limit the shapes of the first half mold 1311 and the second half mold 1312 , the third half mold 1321 and the fourth half mold 1322 , and the shapes of the desired products shall prevail.

[0065] In some embodiments of the present application, reference is made to Figure 6 and Figure 8 As shown, the first mold half 1311 and the second mold half 1312 are mounted back-to-back on the left and right sides of the rotating member 12. The third mold half 1321 and the fourth mold half 1322 are mounted on the frame 11 on the left and right sides of the rotating member 12 via mounting plates 1323, respectively. For example, in one specific embodiment, the first mold half 1311 is mounted on the right side of the rotating member 12, and the third mold half 1321 and the first mold half 1311 are mounted on the frame 11 to the right of the rotating member 12, facing each other. The second mold half 1312 is mounted on the left side of the rotating member 12, and the fourth mold half 1322 and the second mold half 1312 are mounted on the frame 11 to the left of the rotating member 12, facing each other. In this case, the mounting plates 1323 on the rotating member 12 and the fourth mold half 1322 can both move on the frame 11 along the direction of the frame strip 111 to facilitate mold closing and opening operations.

[0066] In some embodiments of the present application, reference is made to Figure 6 and Figure 8 As shown, the rotary driver 311 is movably connected to the side wall of the base 313 to drive the rotary member 12 to rotate in an upside-down manner. The driving method belongs to the conventional method in this field, and the embodiment of this application will not be described in detail. Figure 6 As shown, driving the rotating member 12 to flip over means rotating the rotating member 12 clockwise or counterclockwise with the side center of the rotating member 12 as the axis, and the rotation angle is 180°, so that the orientations of the half molds on the left and right sides of the rotating member 12 are exchanged, that is, the first half mold 1311 originally facing the right is rotated to the left, and the second half mold 1312 originally facing the left is rotated to the right.

[0067] The embodiments of the present application do not limit the number of half molds and mold cavities. In order to improve production efficiency, those skilled in the art may increase the number of half molds and mold cavities based on the equipment provided in the present application, and this should fall within the scope of protection of the present application.

[0068] like Figure 9 Shown is a schematic structural diagram of an injection molding and coating device provided by an exemplary embodiment of the present application.

[0069] In some embodiments of the present application, reference is made to Figure 9 As shown, the rotary in-mold coating mechanism 1 includes a mold ejection device 15, which is arranged between the mounting plate 122 and the base 121. The mold ejection device belongs to conventional technology in this field and will not be described in detail in this application.

[0070] The second aspect of the embodiment of the present application provides an injection molding coating device, referring to Figures 7 to 9 As shown, the injection molding and coating equipment 2 includes a rotary in-mold coating mechanism 1, an injection molding device 21 and a paint injection device 22. The injection molding device 21 is connected to the third half mold 1321 and then to the molding cavity 133, and is used for injection molding to prepare the substrate a. The paint injection device 22 is connected to the fourth half mold 1322 and then to the coating cavity 134, and is used for surface treatment of the substrate a.

[0071] In some embodiments, the injection molding device 21 may include:

[0072] Injection unit: The injection molding device 21 includes one or more injection units, each of which is responsible for injecting molten plastic into the molding cavity 133. The injection unit usually includes components such as a heating cylinder, a screw, and a nozzle to ensure uniform heating and precise injection of the plastic.

[0073] Control unit: The injection molding device 21 is equipped with an advanced control unit that can accurately control parameters such as injection pressure, temperature and speed to ensure the stability and repeatability of the injection molding process.

[0074] Cooling system: The injection molding device 21 is also equipped with a cooling system to accelerate the solidification process of the product and shorten the production cycle. The cooling system can be water-cooled or air-cooled, and the appropriate cooling method is selected according to actual needs.

[0075] In some embodiments, the paint injection device 22 may include:

[0076] Injection unit: The paint injection device 22 includes one or more injection units, each of which is responsible for injecting paint into the coating cavity 134. The injection unit usually includes components such as a storage tank, a pump, and a nozzle to ensure accurate measurement and uniform distribution of the paint.

[0077] Mixing unit: The paint injection device 22 may also be equipped with a paint mixing device for fully mixing the paint before injection to ensure uniformity and consistency of the coating.

[0078] Control unit: The paint injection device 22 is also equipped with an advanced control unit that can accurately control parameters such as paint injection volume, pressure and speed to ensure the stability and repeatability of the coating process.

[0079] The injection molding device 21 is connected to the injection mold cavity 133 via a reliable mechanical interface, ensuring smooth injection of plastic during the injection molding process and ensuring the quality of the product. The connection can be a threaded connection, flange connection, or other form of quick connector. A sealing ring or gasket is provided at the connection to ensure a tight seal and prevent plastic leakage.

[0080] The paint injection device 22 and the coating mold cavity 134 can be connected by a paint mixing head to ensure smooth injection of paint and coating quality. A sealing ring or sealing gasket is also provided at the connection to prevent paint leakage.

[0081] In some embodiments of the present application, the injection molding device 21 may be a screw injection molding machine: the rotation of the screw melts the plastic particles and injects them into the rotary in-mold coating mechanism 1. Screw injection molding machines have high melting efficiency and good mixing effects, and are suitable for various plastic materials. In other embodiments of the present application, the injection molding device 21 may also be a plunger injection molding machine, a hydraulically driven injection molding machine, or an electrically driven injection molding machine, etc. This embodiment is not limited to this. It is sufficient that the material can be injected into the molding cavity 133 of the rotary in-mold coating mechanism 1 to form the substrate a.

[0082] In some embodiments of the present application, the material input by the injection molding device 21 into the rotary in-mold coating mechanism 1 can be a thermoplastic, such as polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), polycarbonate (PC), polyamide (PA), etc. These plastics have good processing and mechanical properties and are suitable for various injection molding applications. Alternatively, it can be a thermosetting plastic, such as epoxy resin, phenolic resin, unsaturated polyester resin, etc. These plastics have high strength and heat resistance after heat curing and are suitable for injection molding with special performance requirements. Alternatively, it can be a composite material, such as glass fiber reinforced plastic (GFEP) and carbon fiber reinforced plastic (CFRP). These composite materials have high strength and rigidity and are suitable for high-performance injection molding applications. Alternatively, it can be an engineering plastic, such as nylon (Nylon), polyoxymethylene (POM), polyetheretherketone (PEEK), etc. These plastics have excellent mechanical properties and chemical resistance and are suitable for high-performance injection molding applications.

[0083] In some embodiments of the present application, the paint injection device 22 is a high-pressure spray device that sprays the paint onto the substrate surface using high pressure, which is suitable for applications requiring high coating uniformity and coverage. This embodiment is not limited to this, and the paint can be injected into the coating cavity 134 of the rotary in-mold coating mechanism 1 to achieve in-mold coating.

[0084] In some embodiments of the present application, the coating that the coating injection device 22 inputs into the rotary in-mold coating mechanism 1 can be polyurethane (PUR), and polyurethane coating has excellent adhesion, chemical resistance, weather resistance and wear resistance. They can provide good flexibility and hardness balance and are applicable to a variety of substrates. Polyurethane coating is widely used in the fields of automobiles, buildings, furniture, electronic products, particularly in the occasions where high durability and aesthetics are required. It can also be polyurethane and polyurea (PUR / PUA), and polyurethane / polyurea coating has fast curing, high reactivity, excellent chemical resistance and weather resistance. They are hardly affected by humidity and temperature during construction and are applicable to rapid construction and harsh environments. Polyurethane / polyurea coating is widely used in anti-corrosion, waterproof, wear-resistant and protective coatings, particularly in the fields of bridges, underground engineering, marine engineering, chemical equipment, etc. It can also be conductive coating, antistatic coating, thermal insulation coating, etc., and the present application embodiment does not limit this.

[0085] In some embodiments of the present application, the injection coating equipment 2 further includes a manipulator 23, which is used to take away the prepared product. The location of the manipulator 23 can be set according to the actual production situation, and this embodiment does not limit this.

[0086] The third aspect of the present application provides an injection molding and coating equipment control system, including the injection molding and coating equipment 2 provided in the above embodiments, and also including a main control device and a sensor device. The main control device is used to control the movement of the rotating part 12, and the sensor device is used to sense the rotation position of the rotating part 12 and output the sensing signal to the main control device.

[0087] like Figure 10 The control logic diagram of the injection molding and coating equipment control system provided by one embodiment of the present application is shown. Figure 10 As shown in the figure, the control logic of the injection molding and coating equipment control system is as follows:

[0088] S1, input DI signal from injection molding device 21 to position A:

[0089] The controller of the injection molding device 21 sends a signal indicating that the mounting plate 122 needs to be moved to position A.

[0090] S2, the limiting member 124 is released from the limit, and the mounting plate 122 rotates clockwise:

[0091] After receiving the signal, the main control device controls the limiting member 124 to release the limit and controls the mounting plate 122 to start rotating.

[0092] S3, sensor detection position to determine whether it is in place:

[0093] If the sensor signal is in place, the main control device confirms that the installation disk 122 has reached the predetermined position A.

[0094] If the detection is not in place, the main control device will send a DO installation disk alarm signal to prompt the operator to check the fault.

[0095] The master device stops further action and waits for the fault to be corrected.

[0096] S4, the limiting member 124 is limited, and the signal that the DO mounting plate has reached position A is output to the injection molding device 21:

[0097] When the installation plate 122 successfully reaches position A, the main control device controls the limiting member 124 to limit the position;

[0098] The DO signal is output to the controller of the injection molding device 21, indicating that the mounting plate 122 has reached position A.

[0099] S5. Input DI signal from injection molding device 21 to position B:

[0100] The controller of the injection molding device 21 sends a signal indicating that the mounting plate 122 needs to be moved to position B.

[0101] S6. The limiting member 124 is released from the limit, and the mounting plate 122 rotates counterclockwise:

[0102] After receiving the signal, the main control device controls the limit member 124 to cancel the limit;

[0103] The mounting plate 122 begins to rotate counterclockwise.

[0104] S7, sensor detection position to determine whether it is in place:

[0105] If the sensor signal is in place, the main control device confirms that the installation disk 122 has reached the predetermined position B;

[0106] If the detection is not in place, the main control device sends a DO installation disk 122 alarm signal to prompt the operator to check the fault;

[0107] The master device stops further action and waits for the fault to be corrected.

[0108] S8, the limiting member 124 performs the limiting operation and outputs a signal that the DO mounting plate has reached position B to the injection molding device 21:

[0109] When the installation disk 122 successfully reaches position B, the main control device controls the limiting member 124 to limit the position.

[0110] Output DO signal to the injection molding device 21, indicating that the mounting plate 122 has reached position B.

[0111] S9, Action completion: The master device confirms that all actions have been completed, ends the current control cycle, and waits for the next control signal.

[0112] like Figure 11 The control logic diagram of the injection molding and coating equipment control system provided by another embodiment of the present application is shown. Figure 11 As shown in the figure, the control logic of the injection molding and coating equipment control system is as follows:

[0113] S1, input DI signal from injection molding device 21 to position A:

[0114] The controller of the injection molding device 21 sends a signal indicating that the rotating member 12 needs to be moved to position A.

[0115] S2, rotating member 12 rotates clockwise:

[0116] After receiving the signal, the main control device controls the rotating member 12 to start rotating.

[0117] S3, sensor detection position to determine whether it is in place:

[0118] If the sensor signal is in place, the main control device confirms that the rotating member 12 has reached the predetermined position A.

[0119] If the detection is not in place, the main control device will send a DO rotating parts alarm signal to prompt the operator to check the fault.

[0120] The master device stops further action and waits for the fault to be corrected.

[0121] S4, output DO rotating part reaches position A signal to injection molding device 21:

[0122] When the rotating member 12 successfully reaches position A, a DO signal is output to the controller of the injection molding device 21 , indicating that the rotating member 12 has reached position A.

[0123] S5. Input DI signal from injection molding device 21 to position B:

[0124] The controller of the injection molding device 21 sends a signal indicating that the rotating member 12 needs to be moved to position B.

[0125] S6, rotating member 12 rotates counterclockwise:

[0126] After the main control device receives the signal, the rotating member 12 starts to rotate counterclockwise.

[0127] S7, sensor detection position to determine whether it is in place:

[0128] If the sensor signal is in place, the main control device confirms that the rotating member 12 has reached the predetermined position B;

[0129] If the detection is not in place, the main control device sends a DO rotating part 12 alarm signal to prompt the operator to check the fault;

[0130] The master device stops further action and waits for the fault to be corrected.

[0131] S8, output DO rotating member 12 reaches position B signal to injection molding device 21:

[0132] When the rotating member 12 successfully reaches position B, a DO signal is output to the injection molding device 21 , indicating that the rotating member 12 has reached position B.

[0133] S9, Action completion: The master device confirms that all actions have been completed, ends the current control cycle, and waits for the next control signal.

[0134] Detailed description:

[0135] DI (Digital Input): digital input signal, used to receive control instructions from the injection molding device 21.

[0136] DO (Digital Output): digital output signal, used to send status feedback to the injection molding device 21.

[0137] Sensor detection: used to confirm whether the mounting plate 122 or the rotating member 12 has reached the predetermined position, ensuring the accuracy and reliability of the action.

[0138] Limit control: used to fix the mounting plate 122 to prevent the mounting plate 122 from accidentally rotating after reaching a predetermined position.

[0139] Alarm mechanism: When an abnormal situation is detected, the system will send out an alarm signal to prompt the operator to check and handle it.

[0140] See Figure 7 As shown ( Figure 7 The small schematic diagram of step S2 and other similar small schematic diagrams are all obtained from the top view of the three-dimensional small schematic diagram of steps S1 and so on). The overall workflow of the injection molding coating equipment 2 provided in one embodiment of the present application is as follows:

[0141] S1, mold closing stage

[0142] After the main control device controls the first half mold 1311 and the second half mold 1312 to reach the preset position, it controls the first half mold 1311 to close the mold with the third half mold 1321 on the mounting plate 1323 to form a complete molding cavity 133; the second half mold 1312 is closed with the fourth half mold 1322 on the mounting plate 1323 to form a complete coating cavity 134.

[0143] S2, injection molding stage

[0144] The main control device controls the injection molding device 21 to inject the molten plastic into the molding cavity 133 to obtain the substrate a. The sensor device monitors the pressure and temperature in the molding cavity 133 to ensure the stability and quality of the injection molding process.

[0145] S3, cooling and mold opening stage

[0146] Molding cooling: After injection molding is complete, the main control device activates the cooling system, and the sensor device monitors the temperature changes in the mold cavity to ensure that the plastic is fully solidified. When the sensor device detects that the temperature in the molding cavity 133 reaches the preset value, it sends a cooling completion signal to the main control device.

[0147] Mold opening action: The main control device controls the first half mold 1311 and the third half mold 1321 to open the mold. At this time, the substrate a is attached to the first half mold 1311, and the second half mold 1312 and the fourth half mold 1322 are opened. The sensor device monitors the mold opening process to ensure smooth progress.

[0148] S4, rotation stage

[0149] The main control device controls the limiter 124 to release the limit on the rotating part 1221 of the mounting plate 122, and controls the rotating part 1221 to rotate, so that the first half mold 1311 and the second half mold 1312 exchange positions. The sensor device monitors the rotation position of the rotating part 1221 and feeds back to the main control device.

[0150] S5, mold closing stage

[0151] After the main control device confirms that the first half mold 1311 and the second half mold 1312 have exchanged positions, the main control device controls the limiter 124 to limit the rotating part 1221 of the mounting plate 122, and controls the first half mold 1311 and the fourth half mold 1322 to close the mold to form the coating mold cavity 134; controls the second half mold 1312 and the third half mold 1321 to close the mold to form the molding mold cavity 133.

[0152] S6, painting and injection molding stage

[0153] The main control device controls the paint injection device 22 to inject the paint into the coating cavity 134, and the sensor device monitors the pressure and temperature in the coating cavity 134 to ensure that the paint is evenly distributed.

[0154] At the same time, the main control device controls the injection molding device 21 to inject the molten plastic into the molding cavity 133 to obtain the substrate b. The sensor device monitors the pressure and temperature in the molding cavity 133 to ensure the stability and quality of the injection molding process.

[0155] S7, solidification, cooling and mold opening stage

[0156] Curing start: After the coating is completed, the main control device starts the cooling system, and the sensor device monitors the temperature changes in the coating cavity 134 to ensure that the coating is completely cured.

[0157] Curing completion detection: When the sensor device detects that the temperature in the coating cavity 134 reaches a preset value, it sends a curing completion signal to the main control device.

[0158] Molding cooling: After injection molding is complete, the main control device activates the cooling system, and the sensor device monitors the temperature changes in the mold cavity to ensure that the plastic is fully solidified. When the sensor device detects that the temperature in the molding cavity 133 reaches the preset value, it sends a cooling completion signal to the main control device.

[0159] The main control device controls the opening of the first mold half 1311 and the fourth mold half 1322, and the opening of the second mold half 1312 and the third mold half 1321. At this time, the finished substrate a is attached to the first mold half 1311, and the substrate b is attached to the second mold half 1312. Sensor equipment monitors the mold opening process to ensure smooth operation.

[0160] S8, finished product removal stage

[0161] The main control device controls the mold ejection device 15, the robot 23 and other removal devices to remove the coated finished substrate a from the first half mold 1311 and perform subsequent processing, such as quality inspection and packaging.

[0162] The above process is repeated. While substrate b is being coated, injection mold cavity 133 forms a new substrate c. After cooling and opening the mold to remove the product substrate b, it is rotated again. While substrate c is being coated, injection mold cavity 133 forms a new substrate d, and so on. This allows for continuous production and coating, avoiding the low production efficiency of a single cavity caused by the alternating method. Furthermore, a one-step in-mold coating process is implemented, eliminating the secondary transport and installation steps, reducing substrate deformation and efficiency reduction caused by transport.

[0163] After the mold is closed and the substrate a is obtained by injection molding, the mold is opened so that the substrate a is attached to the first half mold 3211 instead of the other half mold. The technical means used can be to design a structure such as a clip or groove on the first half mold 3211, so that the substrate a is attached to the first half mold 3211 after the injection molding is completed. This is a conventional technical means in the field and will not be described in detail in the embodiments of the present application.

[0164] See Figure 8 As shown, the overall workflow of the injection molding coating equipment 2 provided in another embodiment of the present application is as follows:

[0165] S1, mold closing and injection molding stage

[0166] After the main control device controls the first half mold 1311 and the second half mold 1312 to reach the preset position, it controls the first half mold 1311 and the third half mold 1321 on the mounting plate 1323 to close the mold to form a complete molding cavity 133; the second half mold 1312 and the fourth half mold 1322 on the mounting plate 1323 are closed to form a complete painting cavity 134.

[0167] The main control device controls the injection molding device 21 to inject the molten plastic into the molding cavity 133 to obtain the substrate a. The sensor device monitors the pressure and temperature in the molding cavity 133 to ensure the stability and quality of the injection molding process.

[0168] S2, cooling stage

[0169] Molding cooling: After injection molding is complete, the main control device activates the cooling system, and the sensor device monitors the temperature changes in the mold cavity to ensure that the plastic is fully solidified. When the sensor device detects that the temperature in the molding cavity 133 reaches the preset value, it sends a cooling completion signal to the main control device.

[0170] S3, mold opening and rotation stage

[0171] Mold opening action: The main control device controls the first half mold 1311 and the third half mold 1321 to open the mold. At this time, the substrate a is attached to the first half mold 1311, and the second half mold 1312 and the fourth half mold 1322 are opened. The sensor device monitors the mold opening process to ensure smooth progress.

[0172] The main control device controls the rotating member 12 to perform flip rotation, so that the first half mold 1311 and the second half mold 1312 exchange positions. The sensor device monitors the rotation position of the rotating part 1221 and feeds back to the main control device.

[0173] S4, mold closing, painting and injection molding stage

[0174] After the main control device confirms that the first half mold 1311 and the second half mold 1312 have exchanged positions, it controls the first half mold 1311 and the fourth half mold 1322 to close together to form a coating cavity 134 ; and controls the second half mold 1312 and the third half mold 1321 to close together to form a molding cavity 133 .

[0175] The main control device controls the paint injection device 22 to inject the paint into the coating cavity 134, and the sensor device monitors the pressure and temperature in the coating cavity 134 to ensure that the paint is evenly distributed.

[0176] At the same time, the main control device controls the injection molding device 21 to inject the molten plastic into the molding cavity 133 to obtain the substrate b. The sensor device monitors the pressure and temperature in the molding cavity 133 to ensure the stability and quality of the injection molding process.

[0177] S5, solidification and cooling stage

[0178] Curing start: After the coating is completed, the main control device starts the cooling system, and the sensor device monitors the temperature changes in the coating cavity 134 to ensure that the coating is completely cured.

[0179] Curing completion detection: When the sensor device detects that the temperature in the coating cavity 134 reaches a preset value, it sends a curing completion signal to the main control device.

[0180] Molding cooling: After injection molding is complete, the main control device activates the cooling system, and the sensor device monitors the temperature changes in the mold cavity to ensure that the plastic is fully solidified. When the sensor device detects that the temperature in the molding cavity 133 reaches the preset value, it sends a cooling completion signal to the main control device.

[0181] S6, mold opening and finished product removal stage

[0182] The main control device controls the opening of the first mold half 1311 and the fourth mold half 1322, and the opening of the second mold half 1312 and the third mold half 1321. At this time, the finished substrate a is attached to the first mold half 1311, and the substrate b is attached to the second mold half 1312. Sensor equipment monitors the mold opening process to ensure smooth operation.

[0183] The main control device controls the mold ejection device 15, the robot 23 and other removal devices to remove the coated finished substrate a from the first half mold 1311 and perform subsequent processing, such as quality inspection and packaging.

[0184] Repeat the above process and rotate again. When the substrate b is in the coating stage in the coating cavity 134, the injection cavity 133 forms a new substrate c. After cooling and opening the mold to obtain the product substrate b, rotate again. When the substrate c is in the coating stage, the injection cavity 133 forms a new substrate d, and so on.

[0185] It should be noted that the technical solutions in the various embodiments of the present application can be combined with each other, but the basis for the mutual combination is that it can be implemented by ordinary technicians in this field; 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, that is, it does not fall within the scope of protection of this application.

[0186] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotary in-mold coating mechanism, characterized in that: The rotary in-mold coating mechanism (1) comprises: Framework (11); a rotating member (12), the rotating member (12) being movably disposed on the frame (11); a template (13), the template (13) comprising a first template (131) and a second template (132), the first template (131) being arranged on the rotating member (12), the second template (132) being arranged on the frame (11) corresponding to the first template (131), the first template (131) and the second template (132) cooperating to form a molding cavity (133) and a coating cavity (134); and A rotary driver (14) is connected to the rotary member (12) and is used to drive the rotary member (12) to rotate.

2. The mechanism according to claim 1, characterized in that The rotating member (12) comprises a base (121) and a mounting plate (122); the base (121) is movably arranged on the frame (11); the mounting plate (122) is arranged on at least one surface of the base (121); and the first template (131) is mounted on the mounting plate (122).

3. The mechanism according to claim 2, characterized in that The first mold plate (131) includes a first mold half (1311) and a second mold half (1312), and the first mold half (1311) and the second mold half (1312) are mounted on the mounting plate (122); the second mold plate (132) includes a third mold half (1321), a fourth mold half (1322) and a mounting plate (1323), and the third mold half (1321) and the fourth mold half (1322) are mounted on the frame (11) via the mounting plate (1323).

4. The mechanism according to claim 3, characterized in that The first half mold (1311) and the second half mold (1312) are both arranged on the mounting plate (122), and the third half mold (1321) and the fourth half mold (1322) are both correspondingly arranged on a side of the mounting plate (1323) facing the rotating member (12).

5. The mechanism according to claim 4, characterized in that The rotary driver (14) is movably connected to the rotating portion (1221) of the mounting disk (122) to drive the rotating portion (1221) of the mounting disk (122) to rotate circumferentially.

6. The mechanism according to claim 4, characterized in that The rotating member (12) includes at least one positioning pin (123) and at least one limiting member (124); the positioning pin (123) is arranged on the mounting plate (122) to fix the first template (131); the limiting member (124) is arranged on the non-rotating portion (1222) of the mounting plate (122); the limiting member (124) is engaged with the mounting plate (122) to limit the circumferential rotation of the rotating portion (1221) of the mounting plate (122).

7. The mechanism according to claim 3, characterized in that The first half mold (1311) and the second half mold (1312) are respectively arranged on the mounting plates (122) on both sides of the base (121), and the third half mold (1321) and the fourth half mold (1322) are respectively mounted on the frames (11) on both sides of the rotating member (12) through mounting plates (1323).

8. The mechanism according to claim 7, characterized in that The rotary driver (14) is movably connected to the side wall of the base (121) to drive the rotary member (12) to rotate in an upside-down manner.

9. An injection molding and coating equipment, characterized in that: The injection molding and coating equipment (2) includes the mechanism (1) as described in any one of claims 1 to 8, and also includes an injection molding device (21) and a paint injection device (22), wherein the injection molding device (21) is connected to the molding cavity (133) and is used for injection molding to prepare the substrate (a), and the paint injection device (22) is connected to the coating cavity (134) and is used for surface treatment of the substrate (a).

10. A control system for injection molding and coating equipment, characterized in that: The injection molding and coating equipment as described in claim 9 also includes a main control device and a sensor device, wherein the main control device is used to control the movement of the rotating part (12), and the sensor device is used to sense the position of the rotating part (12) and output a sensing signal to the main control device.

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