A spray device for epoxy molding compound preform aids

Abstract

This utility model relates to the field of mold release agent spraying technology, specifically to a spraying device for epoxy molding compound preforming aids, comprising: a fixed plate with a feed port on its surface; a movable plate; multiple nozzles disposed on the movable plate; a driving assembly for driving the movable plate to move relative to the fixed plate, so that the feed port can mate with any of the nozzles; and a movable connecting pipe connected to the feed port in an elastic sliding manner. This utility model elastically connects a movable connecting pipe to the feed port of the fixed plate, and provides inclined surfaces on both the movable connecting pipe and the nozzles. This allows the movable connecting pipe to extend towards the nozzle under elastic action, ensuring that the inclined surfaces of both press against each other to achieve a sealing effect. Furthermore, when the nozzle moves and contacts the movable connecting pipe, the inclined surfaces apply a driving force to the movable connecting pipe, causing it to retract against the elastic action, thus eliminating interference with the movement of the nozzle and allowing the nozzle to move in or out from directly below the movable connecting pipe.

Description

Technical Field

[0001] This utility model relates to the field of mold release agent spraying technology, and in particular to a spraying device for epoxy molding compound preforming aids. Background Technology

[0002] Release agent is a functional substance between the mold and the finished product. It is an interface coating applied to the surfaces of two objects that are prone to sticking together. It makes the surfaces of the objects easy to separate, smooth and clean. When sprayed into the mold during pre-forming, it can solve the technical problem of mold sticking to the mold during pre-forming, which leads to poor appearance of the molded material and affects production efficiency. In the past, the nozzle diameter of the release agent atomizing nozzle was fixed when spraying the release agent, and it was not convenient to adjust the nozzle diameter according to different needs.

[0003] To address the aforementioned technical issues, Chinese utility model patent CN222326639U discloses a release agent spray nozzle. This design utilizes a servo motor to rotate a rotating shaft, which in turn drives an adjusting disc to rotate. This allows the first, second, and third nozzles to be replaced as the adjusting disc rotates counterclockwise, enabling nozzles of different inner diameters to be connected to the release agent delivery pipes and allowing for nozzle switching according to different needs.

[0004] Although the nozzle switching structure in the above technical solution can achieve rapid nozzle switching, the connection between the nozzle and the delivery pipe is only horizontal contact. In order to ensure that the rotation of the nozzle will not interfere, there must be a gap between the two in the design. This will cause some oil mist to leak from the gap during the subsequent spraying process, resulting in waste. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a spraying device for epoxy molding compound preforming additives, so as to solve the technical problem that the existing release agent nozzle switching structure has poor sealing performance, which leads to the release agent oil mist easily leaking from the switching structure during spraying.

[0006] To achieve the above objectives, this utility model provides a spraying device for epoxy molding compound preforming additives, comprising:

[0007] A fixed plate with a material inlet on its surface;

[0008] Activity board;

[0009] A nozzle, having multiple nozzles and disposed on the movable plate;

[0010] A drive assembly for driving the movable plate to move relative to the fixed plate so that the feed inlet engages with any nozzle;

[0011] The movable connector is connected to the feed port in an elastic sliding manner. One end of the movable connector forms a first inclined surface, and one end of the nozzle forms a second inclined surface that matches the first inclined surface. The movable connector can extend under elastic action so that the first inclined surface presses against the second inclined surface to achieve a sealed fit. When the nozzle moves, it applies a driving force to the first inclined surface to make the movable connector retract against the elastic action, thereby releasing the movement restriction of the nozzle.

[0012] As a preferred embodiment of this utility model, the driving component includes a servo motor, which is fixedly mounted on the upper end of the fixed plate. The output shaft of the servo motor passes through the fixed plate and is fixedly connected to the rotation center of the movable plate. All the nozzles are located on the circumference of the same virtual circle, and the center of the virtual circle coincides with the rotation center of the movable plate.

[0013] As a preferred embodiment of this utility model, the surface of the movable plate is provided with a threaded groove, and the outer circumferential surface of the nozzle is provided with an external thread that matches the threaded groove.

[0014] As a preferred embodiment of this invention, the spraying device further includes:

[0015] A connecting pipe is fixedly installed on the side of the fixed plate near the movable plate, and the connecting pipe is connected to the material conveying port;

[0016] The telescopic hose is fixedly connected at both ends to the connecting pipe and the movable connector, respectively.

[0017] An elastic structure is used to elastically slide the movable connector to the connecting pipe.

[0018] As a preferred embodiment of this utility model, the elastic structure includes:

[0019] A first connecting plate is fitted over the outside of the movable connecting pipe;

[0020] Multiple guide rods, one end of which is fixedly connected to the first connecting plate;

[0021] The second connecting plate is sleeved on the outside of the connecting tube, and the surface of the second connecting plate is provided with a guide groove that is adapted to the guide rod.

[0022] A spring is sleeved on the outside of the guide rod and between the first connecting plate and the second connecting plate.

[0023] As a preferred embodiment of this utility model, the guide rod is connected to a limiting nut at its end, and the maximum outer diameter of the limiting nut is greater than the inner diameter of the guide groove.

[0024] As a preferred embodiment of the present invention, each nozzle is provided with a second inclined surface on both sides of the end near the movable connecting pipe.

[0025] As a preferred embodiment of this invention, the spraying device further includes a platform for fixing the fixing plate.

[0026] The beneficial effects of this utility model are as follows: This utility model elastically connects a movable pipe to the feed port of the fixed plate, and sets inclined surfaces on the movable pipe and the nozzle respectively, so that the movable pipe can extend toward the nozzle under the elastic action, ensuring that the inclined surfaces of the two press against each other to achieve a sealing effect. When the nozzle moves and contacts the movable pipe, the inclined surface can apply a driving force to the movable pipe to overcome the elastic action and retract it, thereby eliminating the interference to the movement of the nozzle, so that the nozzle can be moved out or in from directly below the movable pipe, which is convenient for switching nozzles. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0029] Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the fixed plate, movable plate, servo motor, nozzle, and discharge pipe of this utility model;

[0030] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0031] Figure 4 This is a schematic diagram showing the disassembled structure of the fixed plate, movable plate, servo motor, and nozzle of this utility model.

[0032] Figure 5 This is a schematic diagram illustrating the principle of this utility model.

[0033] The following are marked in the diagram: 1. Buffer tank; 2. Discharge pipe; 3. Platform; 4. Fixed plate; 5. Feed port; 6. Servo motor; 7. Movable plate; 8. Threaded groove; 9. Nozzle; 10. External thread; 11. Connecting pipe; 12. Movable connecting pipe; 13. First inclined plane; 14. Second inclined plane; 15. First connecting plate; 16. Guide rod; 17. Second connecting plate; 18. Guide groove; 19. Limit nut; 20. Spring; 21. Telescopic hose. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0035] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, a spraying device for epoxy molding compound preforming additives includes: a fixed plate 4 with a feed port 5 on its surface; a movable plate 7; multiple nozzles 9 disposed on the movable plate 7; a drive assembly for driving the movable plate 7 to move relative to the fixed plate 4 so that the feed port 5 aligns with any of the nozzles 9; and a movable connecting pipe 12 that is elastically slidably connected to the feed port 5. One end of the movable connecting pipe 12 forms a first inclined surface 13, and one end of the nozzle 9 forms a second inclined surface 14 adapted to the first inclined surface 13. The movable connecting pipe 12 can extend under elastic action so that the first inclined surface 13 presses against the second inclined surface 14 to achieve a sealed fit. When the nozzle 9 moves, a driving force is applied to the first inclined surface 13 to cause the movable connecting pipe 12 to retract against the elastic action, thereby releasing the movement restriction of the nozzle 9.

[0037] The above technical solution can improve the sealing performance of the spray device without changing its basic structure. When it is needed to switch the nozzle 9, the drive assembly is activated to move the movable plate 7 relative to the fixed plate 4. The movable plate 7 then moves the nozzle 9 relative to the movable connector 12. When the nozzle 9 approaches and fits against the first inclined surface 13 of the movable connector 12, the continued movement of the nozzle 9 will apply a driving force to the first inclined surface 13, causing the movable connector 12 to retract against the elastic effect. This eliminates the interference with the movement of the nozzle 9, allowing the nozzle 9 to move directly below the movable connector 12. At this time, the movable connector 12 resets under the elastic effect, and the first inclined surface 13 of the movable connector 12 will fit tightly against the second inclined surface 14 of the nozzle 9, thus achieving a better sealing effect. The release agent is sprayed out sequentially through the feed port 5 on the fixed plate 4, the movable connector 12, and the nozzle 9, thereby being sprayed onto the mold.

[0038] like Figure 2 and Figure 4 As shown, in this embodiment, the drive component includes a servo motor 6, which is fixedly mounted on the upper end of the fixed plate 4. The output shaft of the servo motor 6 passes through the fixed plate 4 and is fixedly connected to the rotation center of the movable plate 7. All nozzles 9 are located on the circumference of the same virtual circle, and the center of the virtual circle coincides with the rotation center of the movable plate 7.

[0039] The above technical solution can automatically switch nozzles 9. When in use, the servo motor 6 is started so that its output shaft drives the movable plate 7 to rotate, thereby driving the nozzles 9 on its surface to move relative to the movable connector 12 through the movable plate 7, so that any nozzle 9 can be automatically docked with the movable connector 12.

[0040] like Figure 3 and Figure 4 As shown, in this embodiment, the surface of the movable plate 7 is provided with a threaded groove 8, and the outer circumferential surface of the nozzle 9 is provided with an external thread 10 that is compatible with the threaded groove 8.

[0041] The above technical solution enables the nozzle 9 to be detachably connected to the movable plate 7, making it convenient to replace the nozzle 9.

[0042] like Figure 2 and Figure 3As shown, in this embodiment, the spraying device further includes: a connecting pipe 11, which is fixedly disposed on the side of the fixed plate 4 near the movable plate 7, the connecting pipe 11 is connected to the feed port 5, the fixed plate 4 extends axially along the feed port 5 to form an inner tube, and the connecting pipe 11 is threaded onto the outside of the inner tube; a telescopic hose 21, whose two ends are fixedly connected to the connecting pipe 11 and the movable connector 12 respectively; an elastic structure, which is used to elastically slide the movable connector 12 and the connecting pipe 11; specifically, the elastic structure includes: a first connecting plate 15, which is sleeved on the outside of the movable connector 12; a plurality of guide rods 16, one end of which is fixedly connected to the first connecting plate 15; a second connecting plate 17, which is sleeved on the outside of the connecting pipe 11, and the surface of the second connecting plate 17 is provided with guide grooves 18 adapted to the guide rods 16; and a spring 20, which is sleeved on the outside of the guide rods 16 and between the first connecting plate 15 and the second connecting plate 17.

[0043] The above technical solution can ensure that the movable connector 12 and the feed port 5 are connected in an elastic manner. Since the movable connector 12 is provided with a guide rod 16 on the outside, the guide rod 16 can cooperate with the guide groove 18 on the outside of the connecting pipe 11 to guide the vertical movement of the movable connector 12 and prevent the movable connector 12 from moving skewed. At the same time, the spring 20 can push the first connecting plate 15 downward through its own tension, thereby driving the movable connector 12, which is fixedly connected to the first connecting plate 15, to move downward synchronously. The telescopic hose 21 between the movable connector 12 and the connecting pipe 11 can maintain the connection between the two.

[0044] like Figure 3 As shown, in this embodiment, a limiting nut 19 is connected to the end of the guide rod 16, and the maximum outer diameter of the limiting nut 19 is greater than the inner diameter of the guide groove 18.

[0045] The above technical solution can ensure that the guide rod 16 will not completely detach from the guide groove 18. By setting the limit nut 19, the spring 20 can be prevented from popping the guide rod 16 out of the guide groove 18. At the same time, the guide rod 16 can also be removed from the guide groove 18 by removing the limit nut 19.

[0046] like Figure 3 As shown, in this embodiment, each nozzle 9 has a second inclined surface 14 on both sides of its end near the movable connector 12;

[0047] The above technical solution can ensure that the second inclined surface 14 and the first inclined surface 13 of the movable pipe 12 can contact each other during the switching process of the nozzle 9, thereby reducing the wear of the contact parts.

[0048] like Figure 1 As shown, in this embodiment, the spraying device also includes a platform 3, which is used to fix the fixing plate 4.

[0049] The above technical solution can fix the fixing plate 4 in place so as to facilitate spraying the mold.

[0050] like Figure 5 As shown, in this embodiment, the spraying device includes a release agent storage tank, a n-pentane storage tank, a proportioning pump, a metering pump, a static mixer, a buffer tank 1, and an explosion-proof spray valve. The discharge pipe 2 of the buffer tank 1 is connected to the feed port 5 through a regulating valve. The explosion-proof spray valve is a nozzle 9.

[0051] The above technical solution can solve the problem of mold sticking during the preforming and molding process of epoxy molding compounds by spraying a mixture of release agent and n-pentane. The release agent is sprayed evenly on the mold surface in atomized form, which can form a thinner and more uniform release film layer, reducing the sticking points caused by local omissions or uneven application. As a solvent, n-pentane can effectively dilute the release agent, making it easier to atomize and penetrate into the fine structure of the mold, especially complex molds, which is more effective than simply brushing or wiping. n-Pentane evaporates very quickly, which can theoretically accelerate the drying / film formation process of the release agent and reduce waiting time.

[0052] Working principle: When it is necessary to switch nozzle 9, the servo motor 6 is started so that its output shaft drives the movable plate 7 to rotate. This causes the nozzle 9 on the surface of the movable plate 7 to move relative to the movable tube 12. When the nozzle 9 approaches and fits against the movable tube 12, the second inclined surface 14 on the outside of the nozzle 9 will apply a driving force to the first inclined surface 13. As the nozzle 9 continues to move, the movable tube 12 will retract against the elastic effect, thereby eliminating the interference with the movement of the nozzle 9. This allows the nozzle 9 to move directly below the movable tube 12. At this time, the movable tube 12 will reset under the elastic effect, and the first inclined surface 13 of the movable tube 12 will fit tightly against the second inclined surface 14 on the inside of the nozzle 9, thereby achieving a good sealing effect. The release agent is sprayed out sequentially through the feed port 5 on the fixed plate 4, the movable tube 12, and the nozzle 9, thereby being sprayed onto the mold.

[0053] In summary, this utility model elastically connects a movable pipe 12 to the feed inlet 5 of the fixed plate 4, and sets inclined surfaces on the movable pipe 12 and the nozzle 9 respectively, so that the movable pipe 12 can extend toward the nozzle 9 under the elastic action, ensuring that the inclined surfaces of the two press against each other to achieve a sealing effect. When the nozzle 9 moves and contacts the movable pipe 12, the inclined surface can apply a driving force to the movable pipe 12 to overcome the elastic action and retract it, thereby eliminating the interference with the movement of the nozzle 9, so that the nozzle 9 can be moved out or in from directly below the movable pipe 12, which facilitates the switching of the nozzle 9.

[0054] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0055] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A spraying device for epoxy molding compound preforming additives, comprising: A fixed plate (4) has a feeding port (5) on its surface; Activity board (7); Nozzles (9), having multiple nozzles and disposed on the movable plate (7); A drive assembly for driving the movable plate (7) to move relative to the fixed plate (4) so ​​that the feed port (5) docks with any nozzle (9); The spraying device is characterized in that it further includes: The movable connector (12) is connected to the feed port (5) in an elastic sliding manner. One end of the movable connector (12) forms a first inclined surface (13), and one end of the nozzle (9) forms a second inclined surface (14) that is adapted to the first inclined surface (13). The movable connector (12) can extend under elastic action so that the first inclined surface (13) presses against the second inclined surface (14) to achieve a sealed fit. When the nozzle (9) moves, it will apply a driving force to the first inclined surface (13) to make the movable connector (12) retract against the elastic action, so as to release the movement restriction of the nozzle (9).

2. The spraying device for epoxy molding compound preforming aid according to claim 1, characterized in that, The drive assembly includes a servo motor (6), which is fixedly mounted on the upper end of the fixed plate (4). The output shaft of the servo motor (6) passes through the fixed plate (4) and is fixedly connected to the rotation center of the movable plate (7). All the nozzles (9) are located on the circumference of the same virtual circle, and the center of the virtual circle coincides with the rotation center of the movable plate (7).

3. The spraying device for epoxy molding compound preforming aid according to claim 1, characterized in that, The surface of the movable plate (7) is provided with a threaded groove (8), and the outer circumferential surface of the nozzle (9) is provided with an external thread (10) that is compatible with the threaded groove (8).

4. The spraying device for epoxy molding compound preforming aid according to claim 1, characterized in that, The spraying device also includes: A connecting pipe (11) is fixedly disposed on the side of the fixed plate (4) near the movable plate (7), and the connecting pipe (11) is connected to the feed port (5); The telescopic hose (21) is fixedly connected at both ends to the connecting pipe (11) and the movable connecting pipe (12), respectively; An elastic structure is provided for elastically slidingly connecting the movable nozzle (12) to the connecting pipe (11).

5. The spraying device for epoxy molding compound preforming aid according to claim 4, characterized in that, The elastic structure includes: The first connecting plate (15) is sleeved on the outside of the movable connecting pipe (12); Multiple guide rods (16), one end of which is fixedly connected to the first connecting plate (15); The second connecting plate (17) is sleeved on the outside of the connecting tube (11), and the surface of the second connecting plate (17) is provided with a guide groove (18) that is compatible with the guide rod (16). A spring (20) is sleeved on the outside of the guide rod (16) and between the first connecting plate (15) and the second connecting plate (17).

6. The spraying device for epoxy molding compound preforming aid according to claim 5, characterized in that, The guide rod (16) is connected to a limiting nut (19) at its end, and the maximum outer diameter of the limiting nut (19) is greater than the inner diameter of the guide groove (18).

7. The spraying device for epoxy molding compound preforming aid according to claim 1, characterized in that, Each of the nozzles (9) has a second bevel (14) on both sides of its end near the movable connector (12).

8. The spraying device for epoxy molding compound preforming aid according to claim 1, characterized in that, The spraying device also includes a platform (3) for fixing the fixing plate (4).

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