Die for bottom frame of air chamber of intercooler

Abstract

The utility model discloses an intercooler air chamber bottom frame die, which comprises an upper die and a lower die, one side of the lower die facing the upper die is provided with a groove matched with the shape of an intercooler air chamber bottom frame, and one side of the upper die facing the lower die is provided with a core matched with the shape of the inner wall of the intercooler air chamber bottom frame. After the upper mold and the lower mold are closed, the mold core extends into the mold groove, and a shaping cavity which allows an injection molding material to flow in and is equivalent to the bottom frame of the air chamber of the intercooler in shape is formed between the mold core and the mold groove; the front and rear sides and / or the left and right sides of the mold core are outwards inclined, and the shape of the mold groove is equivalent to that of the mold core, so that the front and rear sides and / or the left and right sides of the shaping cavity are outwards inclined. The front side and the rear side of the shaping cavity are designed to be inclined outwards, so that pre-deformation of the bottom frame of the air chamber of the intercooler is achieved, the requirement for flatness after a product is subjected to injection molding and cooled is met, and the product quality and attractiveness are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of intercooler molding technology, and in particular to an intercooler air chamber bottom frame mold. Background Technology

[0002] An intercooler is actually a component of a turbocharger, and its function is to improve the engine's air exchange efficiency. For turbocharged engines, the intercooler is an important part of the turbocharging system. Whether it's a supercharged or turbocharged engine, an intercooler needs to be installed between the turbocharger and the engine's intake manifold. Because this radiator is located between the engine and the turbocharger, it is also called an intercooler, or simply an intercooler.

[0003] The intercooler chamber is injection molded from plastic particles (PA66-GF35). Currently, intercooler chamber bottom frame molds on the market typically include an upper mold and a lower mold. The lower mold has a groove on the side facing the upper mold that matches the shape of the intercooler chamber bottom frame. The upper mold has a core on the side facing the lower mold that matches the shape of the inner wall of the intercooler chamber bottom frame. After the upper and lower molds are closed, the core extends into the groove, forming a sizing cavity for the injection material to flow into, where the injection material is shaped. In existing intercooler chamber bottom frame molds, the core and groove are completely aligned with the inner and outer walls of the intercooler chamber bottom frame, respectively. After the product cools, the intercooler chamber bottom frame tends to shrink inward, meaning the front and rear side plates of the intercooler chamber bottom frame become concave and uneven, affecting product quality and aesthetics. Therefore, improvements to the intercooler chamber bottom frame mold are needed to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to provide a bottom frame mold for an intercooler chamber. This utility model designs the front and rear sides of the molding cavity to be inclined outward, so as to achieve pre-deformation of the bottom frame of the intercooler chamber. After the product is injected and cooled, it can achieve the requirement of flatness, which greatly improves the product quality and aesthetics.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an intercooler chamber bottom frame mold, including an upper mold and a lower mold, wherein the lower mold has a groove on the side facing the upper mold that matches the shape of the intercooler chamber bottom frame, and the upper mold has a core on the side facing the lower mold that matches the shape of the inner wall of the intercooler chamber bottom frame. After the upper mold and the lower mold are closed, the core extends into the groove, and a shaping cavity is formed between the core and the groove, which allows injection molding material to flow in and has a shape equivalent to the intercooler chamber bottom frame; the front and rear sides and / or the left and right sides of the core are all inclined outwards, and the shape of the groove is equivalent to the shape of the core, so that the front and rear sides and / or the left and right sides of the shaping cavity are all inclined outwards.

[0006] By adopting the above technical solution and using the pre-deformation design of the bottom frame of the intercooler air chamber, the molding cavity of the mold is designed as an outward convex structure, that is, the front and rear sides and / or the left and right sides of the molding cavity are all inclined outward. After the product is injected and cooled, the convex inclined surface will deform inward due to thermal expansion and contraction, so that the sides of the product meet the requirements of flatness, which greatly improves the product quality and aesthetics.

[0007] The present invention is further configured such that the front and rear sides and / or left and right sides of the shaping cavity are inclined at an angle that gradually increases from the end to the middle.

[0008] By adopting the above technical solution, the middle part of the product side has the strongest bending resistance and is most easily deformed under the action of thermal expansion and contraction. Therefore, the slope in the middle part is the largest, so as to achieve the effect of flat side after the injection molded product cools down.

[0009] The present invention is further configured such that the upper surfaces of the front and rear sides and / or the left and right sides of the shaping cavity are outwardly convex arc shapes.

[0010] By adopting the above technical solution, which is one embodiment of the side structure of the molding cavity, the arc-shaped design has no corners, making the force more uniform during cooling and the product surface smoother.

[0011] The present invention is further configured such that the angle between the midpoint of the front and rear sides and / or the left and right sides of the shaping cavity and the vertical plane is 1.5 to 2.0°.

[0012] By adopting the above technical solution, the tilt angle is within the range of 1.5 to 2.0°, which will not cause the product to be unable to deform inward to a flat position after cooling due to excessive tilting, nor will it cause the product to still be concave inward after cooling due to insufficient tilt angle.

[0013] The present invention is further configured such that the core is detachably connected to the lower end face of the upper mold by fasteners.

[0014] By adopting the above technical solution, the connection structure is simple and reliable, and disassembly and assembly are very convenient. Different cores can be used according to the requirements of different product specifications. Attached Figure Description

[0015] Figure 1 This is a perspective view of the entire utility model;

[0016] Figure 2 This is a cross-sectional view of the upper and lower molds of this utility model when they are closed.

[0017] Figure 3 This is a schematic diagram of the lower mold of this utility model;

[0018] Figure 4This is a schematic diagram of the mating structure of the upper mold and the core of this utility model;

[0019] Figure 5 middle: Figure 5 a is a schematic diagram of the qualified product outline;

[0020] Figure 5 b is a schematic diagram of the outline of the defective product;

[0021] Figure 5 c is a schematic diagram of the pre-deformed product outline.

[0022] In the diagram: 1. Upper mold; 2. Lower mold; 3. Groove; 4. Core; 5. Shaping cavity; A. Qualified product; B. Unqualified product; C. Pre-deformed product. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: As attached Figures 1-5 The intercooler chamber bottom frame mold shown in Figure c includes an upper mold 1 and a lower mold 2. The lower mold 2 has a groove 3 on the side facing the upper mold 1 that matches the shape of the intercooler chamber bottom frame. The upper mold 1 has a core 4 on the side facing the lower mold 2 that matches the shape of the inner wall of the intercooler chamber bottom frame. After the upper mold 1 and the lower mold 2 are closed, the core 4 extends into the groove 3, and a shaping cavity 5 is formed between the core 4 and the groove 3, which is used for injection molding material to flow in and has a shape that is equivalent to the intercooler chamber bottom frame. The front and rear sides and / or the left and right sides of the core 4 are all inclined outwards. The shape of the groove 3 is equivalent to the shape of the core 4, so that the front and rear sides and / or the left and right sides of the shaping cavity 5 are all inclined outwards. By adopting the design of pre-deformation of the bottom frame of the intercooler air chamber, the molding cavity 5 of the mold is designed as an outward convex structure, that is, the front and rear sides and / or the left and right sides of the molding cavity 5 are all inclined outward. After the product is injected and cooled, the convex inclined surface will deform inward due to thermal expansion and contraction, so that the sides of the product meet the requirements of flatness, which greatly improves the product quality and aesthetics.

[0025] The molding cavity 5 is designed with an increasing inclination from the ends to the middle on both the front and rear sides and / or the left and right sides. Since the middle of the product's side has the strongest bending resistance and is most easily deformed under thermal expansion and contraction, the slope in the middle is the largest, thus achieving a flat side after the injection-molded product cools.

[0026] As attached Figure 5 As shown in Figure c, the upper surfaces of the front and rear sides and / or left and right sides of the shaping cavity 5 are outwardly convex arc shapes. This is one embodiment of the side structure of the shaping cavity 5. The arc-shaped design has no corners, making the force more even during cooling and the product surface smoother.

[0027] The angle between the midpoint of the front and rear sides and / or the left and right sides of the shaping cavity 5 and the vertical plane is 1.5 to 2.0°. The slight tilt angle is within the range of 1.5 to 2.0°, which avoids excessive tilting that would prevent the product from deforming inward to a flat position after cooling, and also avoids insufficient tilting that would cause the product to still be concave after cooling.

[0028] As attached Figure 4 As shown, the core 4 is detachably connected to the lower end face of the upper mold 1 by fasteners, which can be screws. The upper mold 1 has a through hole at its upper end, and the upper end of the core 4 has a threaded hole coaxial with the through hole, but the threaded hole does not extend to the lower end face of the core 4. The screw passes through the through hole and is screwed into the threaded hole, thus connecting the core 4 to the upper mold 1. This connection structure is simple and reliable, and disassembly and assembly are very convenient. Different cores 4 can be used according to different product specifications.

[0029] In this embodiment, since the front and rear sides of the intercooler air chamber bottom frame product are longer than the left and right sides, meaning the front and rear sides are more prone to deformation than the left and right sides, the front and rear sides of the shaping cavity 5 are tilted outwards, and the angle between the middle position of the front and rear sides of the shaping cavity 5 and the vertical plane is 1.5°.

[0030] It is worth mentioning that qualified product A is as shown in the attached document. Figure 5 As shown in Figure a, all its sides are flat, while products injection molded using conventional molds on the market tend to deform inwards on their sides after cooling, as shown in the attached figure. Figure 5 As shown in b, this is a defective product A. When injection molded using the method described in this application, the front and rear sides bulge outwards before cooling, as shown in the attached diagram. Figure 5 As shown in Figure c, this is a pre-deformed product C. After cooling, this product will achieve the required flatness, forming the shape shown in the attached figure. Figure 1 The structure shown.

Claims

1. A mold for the bottom frame of an intercooler plenum, comprising an upper mold (1) and a lower mold (2), wherein the side of the lower mold (2) facing the upper mold (1) is provided with a mold cavity (3) matching the shape of the bottom frame of the intercooler plenum, and the side of the upper mold (1) facing the lower mold (2) is provided with a mold core (4) matching the shape of the inner wall of the bottom frame of the intercooler plenum, wherein after the upper mold (1) and the lower mold (2) are closed, the mold core (4) extends into the mold cavity (3), and a shaping cavity (5) for the injection of plastic material is formed between the mold core (4) and the mold cavity (3), and the shape of the shaping cavity (5) is equivalent to that of the bottom frame of the intercooler plenum; characterized in that: The front and back sides and / or the left and right sides of the core (4) are outwardly inclined, and the shape of the mold groove (3) is similar to that of the core (4), so that the front and back sides and / or the left and right sides of the shaping cavity (5) are outwardly inclined.

2. The intercooler plenum floor mold of claim 1, wherein: The front and back sides and / or the left and right sides of the shaping cavity (5) are gradually increased in inclination from the end to the middle.

3. The intercooler plenum floor mold of claim 2, wherein: The upper end surface of the front and back sides and / or the left and right sides of the shaping cavity (5) is outwardly convex in arc shape.

4. The intercooler plenum floor mold of claim 3, wherein: The angle between the middle position of the front and back sides and / or the left and right sides of the shaping cavity (5) and the vertical plane is 1.5-2.0°.

5. The intercooler plenum floor mold of claim 1, wherein: The core (4) is detachably connected to the lower end surface of the upper mold (1) by a fastener.

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