mold device

Abstract

The application discloses a mold device. The mold device comprises a first mold and a second mold. The first mold comprises a first mold core. The first mold core is provided with a first forming groove. The second mold comprises a second mold core. The second mold core is provided with a gate, a second forming groove and a blocking piece. The gate is communicated with the second forming groove. In the closing direction of the mold device, the first forming groove and the second forming groove are oppositely arranged and jointly form a forming space when the mold is closed, and the forming space is used for accommodating fluid. The blocking piece is arranged on the second mold and protrudes towards the first mold. The blocking piece surrounds at least part of the second forming groove, and the blocking piece is in contact with the first mold when the mold is closed. The blocking piece is tightly matched with the first mold, blocks the overflow of the fluid from the forming space to the gap between the first mold and the second mold, reduces the overflow of the fluid from the forming space to the gap between the first mold and the second mold, improves the size precision of a workpiece formed by the fluid in the forming space, and improves the quality of the workpiece.

Description

Technical Field

[0001] This application relates to the field of injection molding, and more specifically, to a mold apparatus. Background Technology

[0002] In injection molding, the mold device forms a molding space by closing the first mold and the second mold, and then injects fluid into the molding space to cool and shape the workpiece.

[0003] However, the mold device is affected by factors such as incoming material tolerance, fluid injection pressure, and fluid flow, which makes it easy for the fluid to overflow from the molding space during the injection process, affecting the dimensional accuracy of the workpiece and also causing fluid waste. Utility Model Content

[0004] This application provides a mold apparatus.

[0005] This application provides a mold apparatus. The mold apparatus includes a first mold and a second mold. The first mold includes a first mold core. The first mold core is provided with a first molding groove. The second mold includes a second mold core. The second mold core is provided with a gate, a second molding groove, and a blocking member. The gate communicates with the second molding groove. In the mold closing direction of the mold apparatus, the first molding groove and the second molding groove are arranged opposite to each other and together form a molding space when the mold is closed, the molding space being used to accommodate fluid. The blocking member is disposed on the second mold and protrudes toward the first mold, the blocking member surrounding at least a portion of the second molding groove, and when the mold is closed, the blocking member abuts against the first mold.

[0006] In some embodiments, the blocking member includes a first blocking portion and a second blocking portion. The second blocking portion surrounds the first blocking portion, and the first blocking portion is closer to the molding space than the second blocking portion. In the mold closing direction, the height of the second blocking portion in the mold closing direction is less than the height of the first blocking portion in the mold closing direction.

[0007] In some embodiments, the height of the first blocking portion in the mold closing direction is a first dimension, which is greater than or equal to 0.015 mm and less than or equal to 0.05 mm.

[0008] In some embodiments, the height of the second blocking portion in the mold closing direction is a second dimension, which is greater than or equal to 0.005 mm and less than or equal to 0.02 mm.

[0009] In some embodiments, the blocking member surrounds and is spaced apart from the second molding groove.

[0010] In some embodiments, the blocking member surrounds and is spaced apart from the second molding groove, and the minimum distance between the blocking member and the second molding groove is greater than or equal to 0.03 mm and less than or equal to 0.09 mm.

[0011] In some embodiments, the thickness of the first blocking portion is greater than or equal to 0.2 mm and less than or equal to 0.8 mm in the direction perpendicular to the mold closing direction.

[0012] In some embodiments, the thickness of the second blocking portion is greater than or equal to 1 mm and less than or equal to 2 mm in the direction perpendicular to the mold closing direction.

[0013] In some embodiments, the first mold further includes an insert. The insert is embedded in the first mold core and forms a portion of the boundary of the first molding groove. The blocking member abuts against the insert, and the orthographic projection of the blocking member in the mold closing direction is located within the orthographic projection range of the insert.

[0014] In some embodiments, the first mold includes a first body and a slider insert. The first mold core is disposed on the first body, and the slider insert is movably disposed on the first body, located on the side of the insert opposite to the molding space. The slider insert is used to move toward the insert to press against the insert and the first mold core, or to move away from the insert to release the pressurization between the insert and the first mold core.

[0015] In some embodiments, the second mold includes a second body and a pressure sensor. The second mold core is disposed on the second body. The pressure sensor is disposed on the second mold core and communicates with the second molding groove.

[0016] In some embodiments, the mold assembly further includes an injection assembly. The injection assembly is provided with an injection runner that communicates with the molding space, and the injection assembly is used to insert the gate to inject fluid into the molding space.

[0017] In some embodiments, the second body of the second mold has a receiving cavity communicating with the gate. The injection assembly is housed in the receiving cavity, and the injection assembly includes an injection body and a pressure-reducing component. The injection body is housed in the receiving cavity and includes a first surface and a second surface opposite to each other in the mold closing direction. The pressure-reducing component is mounted on at least one of the first surface and the second surface, and the pressure-reducing component is at least partially inserted into the inner wall of the receiving cavity. The pressure-reducing component is used to reduce the force exerted by the injection assembly on the mold assembly.

[0018] In the mold device of this application, the blocking member protrudes from the second mold to the first mold. The blocking member can press and cooperate with the first mold to seal the gap between the first mold and the second mold around the molding space, prevent fluid from overflowing from the molding space into the gap between the first mold and the second mold, reduce the fluid overflowing from the molding space into the gap between the first mold and the second mold, improve the dimensional accuracy of the workpiece formed by the fluid in the molding space, reduce fluid waste, and improve the quality of the workpiece.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a three-dimensional assembly schematic diagram of the mold device according to certain embodiments of this application; Figure 2 yes Figure 1 The diagram shown is an exploded three-dimensional representation of the mold assembly. Figure 3 yes Figure 1 A plan view of a portion of the structure of the second mold in the mold assembly shown. Figure 4 yes Figure 1 The diagram shows the principle of the mold device blocking the fluid in the mold-closed state. Figure 5 yes Figure 1 The diagram shows a cross-sectional view of the mold assembly.

[0021] Figure label: Mold assembly 100; first mold 10; first mold core 11; first molding groove 111; first parting surface 113; insert 13; first body 15; slider insert 17; second mold 30; second mold core 31; gate 311; second molding groove 313; blocking component 315; first blocking part 3151; top surface of the first blocking part 3152; second blocking part 3153; top surface of the second blocking part 3154; second body 33; pressure sensor 35; molding space 101; injection assembly 50; injection body 51; first surface 511; second surface 513; pressure reducing component 53; workpiece 300. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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 of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0024] Please see Figures 1 to 3 The mold apparatus 100 provided in this application includes a first mold 10 and a second mold 30. The first mold 10 includes a first mold core 11. The first mold core 11 is provided with a first molding groove 111. The second mold 30 includes a second mold core 31. The second mold core 31 is provided with a gate 311, a second molding groove 313, and a blocking member 315. The gate 311 communicates with the second molding groove 313. In the mold closing direction Z of the mold apparatus 100, the first molding groove 111 and the second molding groove 313 are arranged opposite to each other and together form a molding space 101 when the mold is closed. The molding space 101 is used to contain fluid. The blocking member 315 is provided on the second mold 30 and protrudes toward the first mold 10. The blocking member 315 surrounds at least a portion of the second molding groove 313. When the mold is closed, the blocking member 315 abuts against the first mold 10.

[0025] Specifically, the mold apparatus 100 provided in this application is used for injection molding. In the mold-closed state, the first molding groove 111 and the second molding groove 313 together form a molding space 101 along the mold-closing direction Z. The inner contour of the molding space 101 is the outer contour of the workpiece 300 to be molded. The first molding groove 111 provides the geometric features of the workpiece 300 facing the first mold 10, and the second molding groove 313 provides the geometric features of the workpiece 300 facing the second mold 30. The mold apparatus 100 of this application includes two molding spaces 101, each capable of injection molding one workpiece 300. The two molding spaces 101 are spaced apart along the length direction X of the mold apparatus 100.

[0026] In the mold-closed state, the first mold core 11 faces the second mold core 31, forming the first parting surface 113. In the mold-closed direction Z, the first molding groove 111 is formed on the side where the first parting surface 113 is located. In the mold-closed state, the second mold core 31 faces the first mold core 11, forming the second parting surface. In the mold-closed direction Z, the second molding groove 313 is formed on the side where the second parting surface is located. In the mold-closed state, the first parting surface 113 and the second parting surface are in contact. In the mold-closed state, fluid is injected from the gate 311, passes through the second molding groove 313, and enters the molding space 101, completing the injection molding of the workpiece 300.

[0027] The blocking member 315 is used to prevent fluid from overflowing from the molding space 101, ensuring the molding quality of the workpiece 300. The blocking member 315 can be a separate structure, connected to the second mold core 31 in a detachable or non-detachable manner, or it can be integrally molded with the second mold core 31. For example, in this application, the blocking member 315 is integrally molded with the second mold core 31, which improves the blocking effect of the blocking member 315 on the fluid. In embodiments where the blocking member 315 is a separate structure, it facilitates replacement of the blocking member 315 and can reduce the cost of replacing it. There can be one or more blocking members 315. For example, in this application, one molding space 101 includes two blocking members 315, which are spaced apart in the width direction. In other embodiments, the number and spatial relationship of the molding space 101 and the blocking members 315 are not limited.

[0028] The blocking member 315 surrounds the second molding groove 313. This surrounding can be a full or partial enclosure. For example, the blocking member 315 of this application partially surrounds the second molding groove 313, and is located around the region of the second molding groove 313 with a deeper depth in the Z-direction of the mold closing direction. In the mold-closed state, the top of the blocking member 315 can press against the first parting surface 113 in a line-to-surface contact manner, or it can press against the first parting surface 113 in a surface-to-surface contact manner. For example, the blocking member 315 of this application presses against the first parting surface 113 in a surface-to-surface contact manner. In the mold-closed state, the blocking member 315 and the first parting surface 113 are tightly fitted together to prevent fluid from flowing from the molding space 101 to the gap between the first and second parting surfaces.

[0029] In the mold device 100 of this application, the blocking member 315 protrudes from the second mold 30 toward the first mold 10. The blocking member 315 can press and fit with the first mold 10 to seal the gap between the first mold 10 and the second mold 30 around the molding space 101, prevent fluid from overflowing from the molding space 101 into the gap between the first mold 10 and the second mold 30, reduce the fluid overflowing from the molding space 101 into the gap between the first mold 10 and the second mold 30, improve the dimensional accuracy of the workpiece 300 formed by the fluid in the molding space 101, reduce fluid waste, and improve the quality of the workpiece 300.

[0030] Please see Figure 3 and Figure 4 In some embodiments, the blocking member 315 includes a first blocking portion 3151 and a second blocking portion 3153. The second blocking portion 3153 surrounds the first blocking portion 3151, and the first blocking portion 3151 is closer to the molding space 101 than the second blocking portion 3153. The height of the second blocking portion 3153 in the mold closing direction Z is less than the height of the first blocking portion 31513 in the mold closing direction Z.

[0031] Specifically, the first blocking portion 3151 and the second blocking portion 3153 can be integrally formed or separately formed; this application is not limited to this. For example, in this application, the second mold core 31, the first blocking portion 3151, and the second blocking portion 3153 are integrally formed, which can reduce the assembly gap between components and ensure the effectiveness of the blocking member 315 in blocking fluid. When the second blocking portion 3153 surrounds the first blocking portion 3151, the second blocking portion 3153 and the first blocking portion 3151 can be adjacent or spaced apart. For example, in this application, the first blocking portion 3151 and the second blocking portion 3153 are adjacent, which allows for a more continuous molding of the blocking member 315 and a better effect in blocking fluid.

[0032] In one embodiment where the mold device 100 has multiple blocking members 315, the multiple blocking members 315 can have different shapes depending on the characteristics of the molding space 101. For example, some blocking members 315 may have a single plane where they abut against the first parting surface 113, while other blocking members 315 may include a first blocking part 3151 and a second blocking part 3153. The planes where the blocking members 315 abut against the first parting surface 113 include two planes: the top surface 3152 of the first blocking part and the top surface 3154 of the second blocking part.

[0033] In the mold-closed state, the top surface 3152 of the first blocking part and the top surface 3154 of the second blocking part are both pressed tightly against the first parting surface 113 to prevent fluid from flowing from the molding space 101 to the gap between the first parting surface 113 and the second parting surface. The height of the second blocking part 3153 in the mold-closing direction Z is less than the height of the first blocking part 31513 in the mold-closing direction Z. The height of the first blocking part 3151 in the mold-closing direction Z is larger, so the pressure of the top surface 3152 of the first blocking part pressing against the first parting surface 113 is greater, the fluid blocking effect is better, and it is closer to the molding space 101, which can quickly block the fluid overflow as soon as the fluid overflows from the molding space 101, thereby reducing the overflow range. The second blocking part 31533 has a smaller height in the mold closing direction Z. On the one hand, the second blocking part 3153 can also block the fluid from flowing from the molding space 101 to the gap between the first parting surface 113 and the second parting surface. On the other hand, even if a small amount of fluid passes over the first blocking part 3151, the second blocking part 3153 can quickly reduce the pressure and temperature of the fluid by utilizing the suddenly expanded flow path and cooling effect, so that the fluid solidifies quickly, reducing the range of fluid overflow and achieving the effect of double anti-overflow glue.

[0034] Please see Figure 4 In some embodiments, the height of the first blocking part 3151 in the mold closing direction Z is a first dimension L1, which is greater than or equal to 0.015 mm and less than or equal to 0.05 mm.

[0035] Specifically, the first dimension L1 of the first blocking part 3151 can be 0.015mm, 0.018mm, 0.022mm, 0.025mm, 0.030mm, 0.035mm, 0.038mm, 0.042mm, 0.046mm, or 0.05mm. If the first dimension L1 of the first blocking part 3151 is less than 0.015mm, the sealing ability between the top surface 3152 of the first blocking part and the first parting surface 113 is insufficient, and fluid can easily penetrate the gap between the top surface 3152 of the first blocking part and the first parting surface 113, causing the workpiece 300 to overflow with glue. If the first dimension L1 of the first blocking part 3151 is greater than 0.05mm, the first blocking part 3151 protrudes too much towards the first mold 10, resulting in high mold closing resistance between the first mold 10 and the second mold 30, making mold closing difficult. Furthermore, the force applied during mold closing can easily cause the first blocking part 3151 to be excessively squeezed, resulting in deformation.

[0036] The first dimension L1 of the first blocking part 3151 is greater than or equal to 0.015 mm and less than or equal to 0.05 mm. This not only prevents fluid from flowing out from the gap between the top surface 3152 of the first blocking part and the first parting surface 113, thus avoiding overflow, but also ensures that the first mold core 11 and the second mold core 31 can be easily closed. Preferably, the first dimension L1 of the first blocking part 3151 in this application is 0.03 mm.

[0037] Please see Figure 4 In some embodiments, the height of the second blocking part 3153 in the mold closing direction Z is a second dimension L2, which is greater than or equal to 0.005 mm and less than or equal to 0.02 mm.

[0038] Specifically, the second dimension L2 of the second blocking part 3153 can be 0.005mm, 0.007mm, 0.009mm, 0.011mm, 0.013mm, 0.015mm, 0.016mm, 0.017mm, 0.019mm, or 0.02mm. If the second dimension L2 is less than 0.005mm, a gap is likely to remain between the top surface 3154 of the second blocking part and the first parting surface 113. Fluid that has passed through the first blocking part 3151 can easily flow out through the gap between the top surface 3154 of the second blocking part and the first parting surface 113, resulting in an excessive amount of overflow. If the second dimension L2 is greater than 0.02mm, the second blocking part 3153 protrudes too much towards the first mold 10, resulting in high mold closing resistance between the first mold 10 and the second mold 30, making mold closing difficult. Furthermore, the force applied during mold closing can easily cause the second blocking part 3153 to be excessively squeezed, resulting in wear on the mold assembly 100 and high mold opening and closing resistance.

[0039] The second dimension L2 of the second blocking part 3153 is greater than or equal to 0.005 mm and less than or equal to 0.02 mm. The second blocking part 3153 can both prevent fluid from flowing out from the gap between the top surface 3154 of the second blocking part and the first parting surface 113, reducing the probability of overflow, and prevent the second blocking part 3153 from being excessively squeezed during mold closing, ensuring that the first mold core 11 and the second mold core 31 can be easily closed. Preferably, the second dimension L2 of the first blocking part 3151 in this application is 0.015 mm.

[0040] Please see Figure 4 In some embodiments, the blocking member 315 surrounds the second molding groove 313 and is spaced apart from the second molding groove 313.

[0041] Specifically, if the blocking member 315 is adjacent to the second molding groove 313, and there is no transition space between the blocking member 315 and the second molding groove 313, the high-temperature and high-pressure fluid will impact the blocking member 315 during the filling of the molding space 101, causing local temperature rise and stress concentration in the blocking member 315. The blocking member 315 is prone to gaps due to uneven thermal expansion. In addition, the pressure of the fluid is transmitted to the blocking member 315, which can easily shorten the service life of the blocking member 315. The separation between the blocking member 315 and the second molding groove 313 can provide a buffer area for fluid expansion and pressure attenuation, reduce the deformation of the blocking member 315 caused by the temperature and pressure of the fluid, improve the service life of the blocking member 315, and ensure the effectiveness of the blocking member 315 in blocking the fluid.

[0042] Please see Figure 4 In some embodiments, the blocking member 315 surrounds the second molding groove 313 and is spaced apart from the second molding groove 313. The minimum distance between the blocking member 315 and the second molding groove 313 is greater than or equal to 0.03 mm and less than or equal to 0.09 mm.

[0043] Specifically, the minimum distance L3 between the blocking member 315 and the second molding groove 313 can be 0.03mm, 0.035mm, 0.04mm, 0.045mm, 0.05mm, 0.055mm, 0.06mm, 0.065mm, 0.07mm, 0.075mm, 0.08mm, 0.085mm, or 0.09mm. If the minimum distance L3 between the blocking member 315 and the second molding groove 313 is less than 0.03mm, the blocking member 315 is almost in close contact with the outer wall of the molding groove. During the filling of the molding space 101, the fluid will impact the blocking member 315, causing local temperature rise and stress concentration in the blocking member 315. The blocking member 315 is prone to gaps due to uneven thermal expansion. If the minimum distance L3 between the blocking member 315 and the second molding groove 313 is greater than 0.09mm, the distance from the blocking member 315 to the molding space 101 is too large, and there is no effect of blocking the fluid.

[0044] When the minimum distance L3 between the blocking member 315 and the second forming groove 313 is greater than or equal to 0.03 mm and less than or equal to 0.09 mm, it can reduce the deformation of the blocking member 315 caused by the temperature and pressure of the fluid, improve the service life of the blocking member 315, and ensure the effect of the blocking member 315 in blocking the fluid.

[0045] Please see Figure 3 In some embodiments, the thickness L4 of the first blocking portion 3151 in the vertical mold closing direction Z is greater than or equal to 0.2 mm and less than or equal to 0.8 mm.

[0046] Specifically, in a plane perpendicular to the mold closing direction Z, the dimension of the blocking member 315 from its inner edge toward the molding space 101 to its outer edge away from the molding space 101 is called its "thickness". That is, in any direction of the XY plane perpendicular to the mold closing direction Z, the minimum distance between the blocking member 315 and its outer edge away from the molding space 101 in any direction is the thickness. The direction perpendicular to the mold closing direction Z is also the potential diffusion direction of the fluid; therefore, the thickness characterizes the fluid-blocking capability of the first blocking part 3151, that is, the thickness characterizes the blocking distance of the blocking member 315 against the fluid.

[0047] The thickness L4 of the first blocking part 3151 can be 0.2 mm, 0.28 mm, 0.35 mm, 0.42 mm, 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, or 0.8 mm. If the thickness of the first blocking part 3151 is less than 0.2 mm, the thickness is too small, and the first blocking part 3151 cannot provide a sufficient blocking distance to block the fluid. The first blocking part 3151 is also prone to deformation. If the thickness L4 of the first blocking part 3151 is greater than 0.8 mm, the thickness is too large, which leads to material waste and extended processing time. On the other hand, it increases the difficulty of closing the first mold 10 and the second mold 30.

[0048] The thickness L4 of the first blocking part 3151 is greater than or equal to 0.2 mm and less than or equal to 0.8 mm. The structural strength of the first blocking part 3151 is moderate, which can provide sufficient blocking distance so that the fluid pressure is fully attenuated when crossing the first blocking part 3151 to ensure the blocking effect on the fluid, while avoiding the waste of material and energy caused by excessive thickening.

[0049] Please see Figure 3 In some embodiments, the thickness L5 of the second blocking portion 3153 in the vertical mold closing direction Z is greater than or equal to 1 mm and less than or equal to 2 mm.

[0050] Specifically, the thickness L5 of the second blocking part 3153 can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, or 2mm. If the thickness L5 of the second blocking part 3153 is less than 1mm, the second blocking part 3153 will lack strength and will easily bend and deform under the action of fluid impact force and mold clamping force, thus reducing the flow obstruction effect. If the thickness L5 of the second blocking part 3153 is greater than 2mm, the thickness is too large, which will lead to material waste and extended processing time, and will also increase the difficulty of mold closing of the first mold 10 and the second mold 30.

[0051] The thickness L5 of the second blocking part 3153 is greater than or equal to 1 mm and less than or equal to 2 mm. The second blocking part 3153 has moderate structural strength, which can resist fluid pressure and mold clamping force, while avoiding excessive thickening that would occupy space and waste costs.

[0052] Please see Figure 2 and Figure 4 In some embodiments, the first mold 10 further includes an insert 13. The insert 13 is embedded in the first mold core 11 and forms part of the boundary of the first molding groove 111. A blocking member 315 abuts against the insert 13, and the orthogonal projection of the blocking member 315 in the mold closing direction Z is located within the orthogonal projection range of the insert 13.

[0053] Specifically, insert 13 is a replaceable component in the first mold 10. Insert 13 is embedded in the first mold core 11, and its inner wall surface forms a partial boundary of the first forming groove 111. That is, insert 13 is used to form part of the geometric features of the workpiece 300. Part of the surface of insert 13 also forms part of the first forming surface. When insert 13 is worn, damaged, or needs to be redesigned, it can be replaced individually without replacing the entire first mold 10, which can reduce costs and improve maintenance efficiency. The orthogonal projection of the blocking member 315 in the mold closing direction Z is located within the orthogonal projection range of insert 13. Thus, the force exerted by the blocking member 315 on the first mold 10 is borne by insert 13, preventing pressure from being transmitted to the body of the first mold core 11. This can protect the first mold core 11 from compression deformation. When the fluid blocking effect of the blocking member 315 and the first forming surface weakens, only insert 13 needs to be replaced to complete the maintenance of the first mold 10, reducing maintenance costs.

[0054] Please see Figure 2In some embodiments, the first mold 10 includes a first body 15 and a slider insert 17. A first mold core 11 is disposed on the first body 15, and the slider insert 17 is movably disposed on the first body 15, located on the side of the insert 13 facing away from the molding space 101. The slider insert 17 is used to move toward the insert 13 to press against the insert 13 and the first mold core 11, or to move away from the insert 13 to release the press between the insert 13 and the first mold core 11.

[0055] Specifically, the first body 15 serves as the fixed base for the first mold 10. In the mold closing direction Z, the first mold core 11 is embedded in the first body 15 on the side facing the second mold 30. The slider insert 17 is embedded in the first body 15 and located on the outer periphery of the first mold core 11. For example, the slider insert 17 of this application includes four pieces, located on opposite sides of the first mold core 11 in the width direction Y, with two pieces on each side.

[0056] The slider insert 17 is equipped with an inclined guide post, which allows the slider insert 17 to slide in the width direction Y by moving the inclined guide post. When the slider insert 17 moves towards the insert 13 in the width direction Y, the slider insert 17 can press against the insert 13 and the first mold core 11, eliminating the fit gap between the insert 13 and the first mold core 11, and preventing fluid from seeping into the gap during high-pressure injection, which could cause burrs or displacement of the insert 13. When the injection molding has cooled down and before the mold opens, the slider insert 17 moves away from the insert 13 in the width direction Y, releasing the pressure on the insert 13. Then the first mold 10 and the second mold 30 separate in the mold closing direction Z, and the insert 13 exits the first body 15 together with the first mold core 11, completing the demolding.

[0057] Please see Figure 2 and Figure 3 In some embodiments, the second mold 30 includes a second body 33 and a pressure sensor 35. A second mold core 31 is disposed on the second body 33. The pressure sensor 35 is disposed on the second mold core 31 and communicates with the second molding groove 313.

[0058] Specifically, the second mold core 31 is provided with a mounting hole, and the pressure sensor 35 is housed in the mounting hole. The mounting hole penetrates into the second molding groove 313 in the mold closing direction Z, thus communicating with the second molding groove 313. The pressure sensor 35 is used to monitor the pressure changes of the fluid in the second molding groove 313 in real time during the injection molding process. In the mold closing direction Z, the pressure sensor 35 faces the second molding groove 313. During the process of fluid filling the molding space 101 (injection stage), when the fluid is injected from the gate 311 into the second molding groove 313 and fills the molding space 101, the pressure sensor 35 can detect the flow pressure of the fluid. This helps to ensure that the fluid can fill the molding space 101 smoothly with sufficient pressure, avoiding the situation where the workpiece 300 is short of material or not fully filled due to insufficient pressure. After the fluid fills the molding space 101 (holding pressure stage), the mold device 100 or an external device usually applies pressure to the fluid for holding pressure to ensure that the workpiece 300 maintains its shape and size during the cooling process. In this stage, the pressure sensor 35 is used to monitor the pressure changes of the holding pressure in real time to ensure that the holding pressure is stable and within a reasonable range. During the cooling stage, the fluid gradually cools and solidifies, and the pressure in the molding space 101 gradually decreases. The pressure sensor 35 can monitor the gradual decrease in pressure and help the external control system determine whether the workpiece 300 has cooled to a state where it can be demolded.

[0059] Please see Figure 2 and Figure 5 The mold assembly 100 also includes an injection assembly 50. The injection assembly 50 is provided with an injection runner that communicates with the molding space 101. The injection assembly 50 is used to insert a gate 311 to inject fluid into the molding space 101.

[0060] Specifically, during the injection molding process, after the injection component 50 is inserted into the gate 311, fluid is injected into the molding space 101 of the mold through the injection channel of the injection component 50. Driven by the injection component 50, the fluid passes through the gate 311 into the second molding groove 313, and then fills the entire molding space 101. During the filling process, the thrust of the injection component 50 ensures that the fluid overcomes flow resistance and completely fills the molding space 101. Simultaneously, the connectivity between the injection component 50, the gate 311, and the molding space 101 ensures smooth fluid flow without leakage. During the holding pressure stage, the injection component 50 maintains a certain pressure to ensure stable fluid pressure within the molding space 101, preventing defects caused by pressure changes. After the cooling stage begins, the injection component 50 gradually reduces the pressure, and simultaneously, the mold's cooling system starts working, lowering the temperature within the molding space 101 and causing the fluid to solidify and form.

[0061] Please see Figure 2 and Figure 5In some embodiments, the second body 33 of the second mold 30 is provided with a receiving cavity, which communicates with the gate 311. The injection assembly 50 is housed in the receiving cavity, and the injection assembly 50 includes an injection body 51 and a pressure-reducing member 53. The injection body 51 is housed in the receiving cavity and includes a first surface 511 and a second surface 513 opposite to each other in the mold closing direction Z. The pressure-reducing member 53 is installed on at least one of the first surface 511 and / or the second surface 513, and the pressure-reducing member 53 is at least partially inserted into the inner wall of the receiving cavity. The pressure-reducing member 53 is used to reduce the force exerted by the injection assembly 50 on the mold assembly 100.

[0062] Specifically, in the ultra-high injection pressure injection molding process, to prevent the mold assembly 100 from deforming due to excessive force exerted on it by the injection component 50, the injection component 50 is provided with a pressure-reducing element 53. The second body 33 is provided with a receiving cavity, in which the injection component 50 is housed. During injection molding, the injection component 50 is inserted into the gate 311, and fluid is injected into the molding space 101 at high pressure through the injection channel of the injection component 50. The injection body 51 includes a first surface 511 and a second surface 513 opposite to each other in the mold closing direction Z. The pressure-reducing element 53 is installed on the first surface 511 and / or the second surface 513, and is at least partially inserted into the inner wall of the receiving cavity. There may be one or more pressure-reducing elements 53. In some embodiments, at least four pressure-reducing elements 53 are provided on the first surface 511 and at least four pressure-reducing elements 53 are provided on the second surface 513 to ensure a pressure-reducing effect.

[0063] During injection molding, when the injection assembly 50 applies force to the mold assembly 100, the pressure-reducing component 53 can absorb and disperse the force exerted by the injection assembly 50 on the mold assembly 100, reducing the force on the mold assembly 100. For example, the pressure-reducing component 53 can be a spring, installed on the first surface 511 and the second surface 513 of the injection body 51, in contact with the inner wall of the receiving cavity. When the injection assembly 50 applies pressure, the spring is compressed, thereby absorbing part of the force and reducing the force on the mold. The pressure-reducing component 53 can also be an elastic pad made of graphite-based composite material, installed on the first surface 511 and the second surface 513 of the injection body 51. When the injection assembly 50 applies pressure, the elastic pad undergoes elastic deformation, dispersing the pressure and reducing the compressive stress on the mold. The pressure-reducing component 53 can also be a ceramic air bladder. When the injection assembly 50 applies pressure, the ceramic air bladder is compressed, increasing the internal gas pressure, thereby balancing the pressure of the injection assembly 50 and reducing the force on the mold. Both ceramic and graphite-based composite materials can withstand high temperatures, ensuring that the pressure-reducing component 53 operates stably in high-temperature environments.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A mold-making device, characterized in that, include: The first mold includes a first mold core, and the first mold core is provided with a first forming groove; and The second mold includes a second mold core, which is provided with a gate, a second molding groove, and a blocking member. The gate communicates with the second molding groove. In the mold closing direction of the mold device, the first molding groove and the second molding groove are arranged opposite to each other and together form a molding space when the mold is closed. The molding space is used to contain fluid. The blocking member is provided on the second mold and protrudes toward the first mold. The blocking member surrounds at least a portion of the second molding groove. When the mold is closed, the blocking member abuts against the first mold.

2. The mold apparatus according to claim 1, characterized in that, The blocking element includes: First blocking section; and A second blocking portion surrounds the first blocking portion, and the first blocking portion is closer to the molding space than the second blocking portion. The height of the second blocking portion in the mold closing direction is less than the height of the first blocking portion in the mold closing direction.

3. The mold apparatus according to claim 2, characterized in that, The height of the first blocking part in the mold closing direction is a first dimension, which is greater than or equal to 0.015 mm and less than or equal to 0.05 mm; and / or The height of the second blocking part in the mold closing direction is a second dimension, which is greater than or equal to 0.005 mm and less than or equal to 0.02 mm.

4. The mold apparatus according to claim 2, characterized in that, The blocking member surrounds the second forming groove and is spaced apart from the second forming groove; or... The blocking member surrounds the second forming groove and is spaced apart from the second forming groove. The minimum distance between the blocking member and the second forming groove is greater than or equal to 0.03 mm and less than or equal to 0.09 mm.

5. The mold device according to claim 2, characterized in that, In the direction perpendicular to the mold closing direction, the thickness of the first blocking portion is greater than or equal to 0.2 mm and less than or equal to 0.8 mm; and / or, In the direction perpendicular to the mold closing direction, the thickness of the second blocking part is greater than or equal to 1 mm and less than or equal to 2 mm.

6. The mold apparatus according to claim 1, characterized in that, The first mold further includes an insert, which is embedded in the first mold core and forms part of the boundary of the first molding groove. The blocking member abuts against the insert, and the orthographic projection of the blocking member in the mold closing direction is located within the orthographic projection range of the insert.

7. The mold apparatus according to claim 6, characterized in that, The first mold includes a first body and a slider insert. The first mold core is disposed on the first body. The slider insert is movably disposed on the first body. The slider insert is located on the side of the insert away from the molding space. The slider insert is used to move toward the insert to press against the insert and the first mold core, or to move away from the insert to release the press between the insert and the first mold core.

8. The mold apparatus according to claim 1, characterized in that, The second mold includes a second body and a pressure sensor. The second mold core is disposed on the second body, and the pressure sensor is disposed on the second mold core and communicates with the second molding groove.

9. The mold apparatus according to claim 1, characterized in that, The mold assembly further includes: An injection assembly is provided with an injection channel that communicates with the molding space. The injection assembly is used to insert into the gate to inject fluid into the molding space.

10. The mold apparatus according to claim 9, characterized in that, The second body of the second mold has a receiving cavity, which communicates with the gate. The injection assembly is housed in the receiving cavity, and the injection assembly includes: An injection body is housed in the receiving cavity, the injection body including a first surface and a second surface opposite to each other in the mold closing direction; and A pressure-reducing element is installed on at least one of the first surface and the second surface, the pressure-reducing element being at least partially inserted into the inner wall of the receiving cavity, the pressure-reducing element being used to reduce the force exerted by the injection assembly on the mold device.

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