Electromagnetic heating device and composite forming machine

Abstract

The utility model relates to an electromagnetic heating device applied to a composite forming machine and the composite forming machine, the electromagnetic heating device comprises a mold assembly and a plurality of mold fixing assemblies, a product to be heated is arranged on the mold assembly, and the mold assembly is installed on an installation support through the mold fixing assemblies; each electromagnetic heating module comprises a high-frequency induction heating machine and an induction heating coil, the induction heating coil is a hard coil and is arranged on the outer side of the mold assembly in a sleeving mode, and the projection line segment, on the straight line where the axis of the product is located, of the induction heating coil is located in the product area; the induction heating coil is connected with the high-frequency induction heating machine; wherein the radial section of the induction heating coil is square, and the radial section is perpendicular to the axis of the product. Compared with the prior art, the heating device has the advantages of uniformity in heating and the like.

Description

Technical Field

[0001] This utility model relates to the field of composite molding machines, and in particular to an electromagnetic heating device and a composite molding machine. Background Technology

[0002] In the production process of composite molding machines, traditional resistance heating is commonly used to heat the mold. However, this method has the following problems:

[0003] 1. Significant heat loss: The resistance wire itself generates heat, and the relatively high surface temperature causes heat loss, resulting in direct energy loss and waste.

[0004] 2. Low heating efficiency: The heat conduction speed of resistance heating is relatively slow, the heating effect is relatively poor, and it takes a long time to complete the heating process, which affects production efficiency.

[0005] 3. Poor temperature uniformity: Due to uneven heating of the resistance wire, the heating temperature is easily uneven, which affects the quality stability of the product.

[0006] In response, some technicians began to explore new heating methods. For example, Chinese patent CN209616135U discloses a mold electromagnetic heating device, which includes a shell and a cover plate and a bottom plate respectively located at the opening end of the shell. A fan is provided on the cover plate. An electromagnetic induction coil, a coil heat insulation layer and an inner cavity plate are arranged sequentially from the outside to the inside of the inner wall of the shell. A mold bracket is provided below the inner cavity plate. The bottom of the mold bracket is located on the bottom plate. The mold bracket includes a groove plate and several stiffeners for supporting the groove plate. The groove plate is V-shaped, U-shaped or other concave. The bottom of the stiffeners is located on the bottom plate. A heat insulation layer is provided on the bottom of the cover plate, the top of the bottom plate and the inner wall of the shell. The aforementioned heating device transfers heat to the mold to be heated by setting an inner cavity plate, and at the same time, a fan is installed on the device to make the temperature of the mold inside the device more uniform. A coil heat insulation layer is installed between the inner cavity plate and the electromagnetic induction coil to prevent damage caused by excessive temperature of the electromagnetic induction coil and improve the electromagnetic heating effect. However, the cavity of the aforementioned heating device is annular, while the radial cross section of some glass fiber products is square. When applied to such products, it is impossible to form uniform heating. Utility Model Content

[0007] The purpose of this invention is to provide an electromagnetic heating device and a composite molding machine. The radial cross-section of the induction heating coil is square, and the arrangement of multiple mold fixing components along the axis can improve the circumferential consistency of heating for square products.

[0008] The objective of this utility model can be achieved through the following technical solutions:

[0009] An electromagnetic heating device for use in a composite molding machine, comprising:

[0010] A mold assembly and multiple mold fixing assemblies are provided. The product to be heated is placed on the mold assembly, and the mold assembly is mounted on a mounting bracket via the mold fixing assemblies.

[0011] One or more electromagnetic heating modules, each electromagnetic heating module including a high-frequency induction heating machine and an induction heating coil, wherein the induction heating coil is a rigid coil and is sleeved on the outside of the mold assembly, the projection line segment of the induction heating coil on the straight line of the product axis is located within the product area, and the induction heating coil is connected to the high-frequency induction heating machine;

[0012] The radial cross-section of the induction heating coil is square, and the radial cross-section is perpendicular to the axis of the product.

[0013] The induction heating coils of all electromagnetic heating modules are arranged along the product axis.

[0014] The mold fixing assembly includes a first support plate, a limiting collar, and two first connecting blocks. The long side of the first support plate is perpendicular to the axis of the product, and the two first connecting blocks are respectively connected to the lower ends of the long side. The limiting collar is disposed on the upper surface of the first support plate, and the mold assembly is inserted into the limiting collar.

[0015] The cavity of the limiting collar is square in shape.

[0016] The cavity of the limiting collar has one apex angle facing downwards.

[0017] The limiting collar includes a support block and a limiting member. The support block has a V-shaped groove, and the limiting member is V-shaped. The two ends of the limiting member are respectively connected to the two ends of the limiting collar to form the cavity.

[0018] The limiting component includes multiple parallel V-shaped strips, and each V-shaped strip is detachably connected to the support block.

[0019] There are gaps between adjacent V-shaped strips.

[0020] The mold fixing assembly also includes two connecting plates. The two ends of the long side of the first support plate are provided with upwardly extending steps. The two connecting plates are arranged in parallel and are supported by the inner sides of the two steps respectively. The two ends of the limiting collar are respectively connected to the two connecting plates.

[0021] A composite molding machine includes the electromagnetic heating device as described above.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The radial cross-section of the induction heating coil is square. Combined with the arrangement of multiple mold fixing components along the axis, the circumferential consistency of heating for square products can be improved.

[0024] 2. The mold fixing assembly includes a first support plate, a limiting collar, and two first connecting blocks. This design can improve the reusability of parts. The first support plate and the first connecting blocks can be designed according to the installation position, while the limiting collar can be designed according to the shape of the product mold assembly. Therefore, it is not necessary to replace the entire mold fixing assembly when the carrier or product is changed.

[0025] 3. The cavity of the limiting collar is square in shape, with one apex pointing downwards, which can increase rolling resistance, improve stability, and prevent rotation.

[0026] 4. The limiting component includes multiple parallel V-shaped strips, and each V-shaped strip is detachably connected to the support block. There is a gap between adjacent V-shaped strips, which can avoid the mold being squeezed through at the end and improve the yield of the product. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram from another perspective of the present invention;

[0029] Figure 3 This is a schematic diagram of the axial perspective of this utility model;

[0030] The components are: 1. Mold assembly, 2. Induction heating coil, 3. High-frequency induction heating machine, 4. Mold fixing assembly, 5. Yarn feeding assembly, 4-1. First support plate, 4-2. Limiting collar, 4-3. First connecting block, 4-4. Connecting plate. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "proximal end," "farthest end," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0034] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0037] An electromagnetic heating device for use in a composite molding machine, such as Figures 1 to 3 As shown, it includes:

[0038] The mold assembly 1 and multiple mold fixing assemblies 4 are provided. The product to be heated is placed on the mold assembly 1, and the mold assembly 1 is mounted on the mounting bracket via the mold fixing assemblies 4.

[0039] One or more electromagnetic heating modules, each electromagnetic heating module including a high-frequency induction heater 3 and an induction heating coil 2. The induction heating coil 2 is a rigid coil, which is sleeved on the outside of the mold assembly 1. The projection line segment of the induction heating coil 2 on the straight line of the product axis is located in the product area, and the induction heating coil 2 is connected to the high-frequency induction heater 3.

[0040] The radial cross-section of the induction heating coil 2 is square, and the radial cross-section is perpendicular to the axis of the product.

[0041] The radial cross-section of the induction heating coil 2 is square. Combined with the arrangement of multiple mold fixing components 4 along the axis, the circumferential consistency of heating for square products can be improved.

[0042] In almost all embodiments, the induction heating coils 2 of all electromagnetic heating modules are arranged along the product axis, thereby enabling the heating of longer products.

[0043] In this embodiment, the mold fixing assembly 4 includes a first support plate 4-1, a limiting collar 4-2, and two first connecting blocks 4-3. The long side of the first support plate 4-1 is perpendicular to the axis of the product, and the two ends of the long side are respectively connected to the lower part of the two first connecting blocks 4-3. The limiting collar 4-2 is disposed on the upper surface of the first support plate 4-1, and the mold assembly 1 is inserted into the limiting collar 4-2.

[0044] Thus, the design of the mold fixing assembly 4, which includes a first support plate 4-1, a limiting collar 4-2, and two first connecting blocks 4-3, can improve the reusability of parts. The first support plate and the first connecting blocks 4-3 can be designed according to the installation position, while the limiting collar 4-2 can be designed according to the shape of the product mold assembly 1, so that the entire mold fixing assembly 4 does not need to be replaced when the carrier or product is changed.

[0045] In this embodiment, the cavity of the limiting collar 4-2 is square in shape, and one of the apex corners of the cavity of the limiting collar 4-2 is set vertically downward. Based on the square shape of the cavity of the limiting collar 4-2 and the design of one apex corner pointing downward, the rolling resistance can be increased, the stability can be improved, and rotation can be prevented.

[0046] In this embodiment, the limiting collar 4-2 includes a support block and a limiting member. The support block has a V-shaped groove, and the limiting member is V-shaped. The two ends of the limiting member are connected to the two ends of the limiting collar 4-2 to form a cavity. The limiting member includes multiple parallel V-shaped strips, and each V-shaped strip is detachably connected to the support block. It adopts a split and detachable design, which facilitates the clamping of the mold assembly 1.

[0047] In addition, there is a gap between adjacent V-shaped bars. Based on the fact that the limiting component includes multiple parallel V-shaped bars, and each V-shaped bar is detachably connected to the support block, the design of having a gap between adjacent V-shaped bars can avoid the mold being squeezed too much at the end, thereby improving the product yield.

[0048] In addition, the mold fixing assembly 4 also includes two connecting plates 4-4. The two ends of the long side of the first support plate 4-1 are provided with upward extending steps. The two connecting plates 4-4 are arranged in parallel and are supported by the inner side of the two steps respectively. The two ends of the limiting collar 4-2 are connected to the two connecting plates 4-4 respectively, thereby improving the stability of the limiting collar 4-2.

[0049] In this application, the high-frequency induction heating machine 3 generates a high-frequency current, which is output as a high-frequency electromagnetic field through the induction heating coil 2. When the object to be heated is placed in the induction coil, the high-frequency electromagnetic field will sense and excite the molecular motion inside the object to be heated, thereby generating heat for heating.

Claims

1. An electromagnetic heating device applied to a composite molding machine, characterized by, The electromagnetic heating device comprises: a mold assembly (1) and a plurality of mold fixing assemblies (4), a product to be heated is placed on the mold assembly (1), and the mold assembly (1) is installed on a mounting bracket through the mold fixing assembly (4); one or more electromagnetic heating modules, each electromagnetic heating module comprising a high-frequency induction heating machine (3) and an induction heating coil (2), the induction heating coil (2) is a hard coil, which is sleeved outside the mold assembly (1), the projection line segment of the induction heating coil (2) on the straight line where the product axis is located is located in the product area, and the induction heating coil (2) is connected with the high-frequency induction heating machine (3); wherein the shape of the radial section of the induction heating coil (2) is square, and the radial section is perpendicular to the axis of the product.

2. The electromagnetic heating device for use in a composite molding machine according to claim 1, wherein The induction heating coils (2) of all electromagnetic heating modules are arranged along the product axis direction.

3. The electromagnetic heating device for use in a composite molding machine according to claim 1, wherein The mold fixing assembly (4) comprises a first support plate (4-1), a limiting sleeve ring (4-2) and two first connecting blocks (4-3), the long edge direction of the first support plate (4-1) is perpendicular to the axis of the product, and the lower ends of the two ends of the long edge direction are respectively connected with the two first connecting blocks (4-3), the limiting sleeve ring (4-2) is arranged on the upper surface of the first support plate (4-1), and the mold assembly (1) is inserted into the limiting sleeve ring (4-2).

4. The electromagnetic heating device for use in a composite forming machine according to claim 3, wherein The cavity of the limiting sleeve ring (4-2) is square.

5. The electromagnetic heating device for use in a composite forming machine according to claim 4, wherein One of the top corners of the cavity of the limiting sleeve ring (4-2) is arranged downward.

6. The electromagnetic heating device for use in a composite molding machine according to claim 4, wherein The limiting sleeve ring (4-2) comprises a support block and a limiting piece, the support block is provided with a V-shaped groove, the limiting piece is V-shaped, and the two ends of the limiting piece are respectively connected with the two ends of the limiting sleeve ring (4-2) to form the cavity.

7. The electromagnetic heating device for use in a composite forming machine according to claim 6, wherein The limiting piece comprises a plurality of V-shaped strips arranged in parallel, and each V-shaped strip is detachably connected with the support block.

8. The electromagnetic heating device for use in a composite forming machine according to claim 7, wherein Gaps are arranged between adjacent V-shaped strips.

9. The electromagnetic heating device for use in a composite molding machine according to claim 3, wherein The mold fixing assembly (4) further comprises two connecting plates (4-4), the two ends of the long edge of the first support plate (4-1) are provided with upwardly extending steps, the two connecting plates (4-4) are arranged in parallel and are respectively supported by the inner sides of the two steps, and the two ends of the limiting sleeve ring (4-2) are respectively connected with the two connecting plates (4-4).

10. A composite forming machine characterized by, The electromagnetic heating device comprises any one of claims 1-9.

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