Injection mold with conformal cooling runner

Abstract

The utility model relates to the technical field of injection molds, and discloses an injection mold with a conformal cooling runner, which comprises a forming part, a matching part is fixedly mounted at the bottom end of the forming part, and a water inlet hole and a water outlet hole are respectively formed in the left end and the right end of the inside of the matching part. A flow dividing assembly is arranged in the forming part. According to the injection mold with the conformal cooling runner, flowing of cooling water entering and discharging out of the annular circulating cavity is guided through the arranged triangular splitter plate, and the situation that the flowing of the cooling water and the cooling effect on an injection molding part are affected due to impact convection when the cooling water enters or is discharged out of the annular circulating cavity is avoided; and cooling water entering the flow channels on the front side and the rear side of the interior of the annular circulation cavity can be separated through the arranged separation arc plates, when the flow channels are located at the right end of the interior of the annular circulation cavity, separated water flow is mixed, the temperature of the cooling water is reduced, and the cooling effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold with a conformal cooling flow channel. Background Art

[0002] Injection mold is a processing method used in the mass production of certain complex-shaped parts. The heated and melted plastic raw materials are injected into the mold cavity by the injection molding machine under high pressure. After cooling and solidification, the molded product is obtained. In order to improve the cooling efficiency of the injection molded parts inside some injection molds with internal threaded bottle caps, conformal cooling channels are set inside the mold and cooling water is introduced to cool the injection molded parts.

[0003] According to a publicly disclosed conformal cooling injection mold (publication number: CN208529655U), the above application provides a water inlet hole, a water outlet hole and a ring cooling water channel, so that cooling water can be directly delivered to the vicinity of the molding area, thereby accelerating the cooling speed of the product and improving production efficiency.

[0004] However, during the actual use of the above-mentioned equipment, when the cooling water enters the annular cooling water channel through the water inlet hole, the cooling water will flow from left to right in the annular cooling water channel, and the heat absorbed by the cooling water in the process of flowing will gradually increase, causing the temperature of the cooling water reaching the right end of the annular cooling water channel to increase, which in turn causes a large temperature difference between the left and right ends of the injection molded part, which is likely to affect the cooling and molding effect of the injection molded part; in view of this, we propose an injection mold with a conformal cooling flow channel. Summary of the invention

[0005] The utility model aims to provide an injection mold with a conformal cooling channel to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an injection mold with a conformal cooling channel, comprising a molding part, a mating part is fixedly installed at the bottom end of the molding part, a water inlet hole and a water outlet hole are respectively opened at the left and right ends of the mating part, and a flow diversion component is arranged inside the molding part, and the flow diversion component comprises:

[0007] An annular circulation chamber, the annular circulation chamber is provided on the bottom surface of the forming part, the inner wall surfaces on the left and right sides of the annular circulation chamber are provided with water collecting hopper grooves, the surface of the water collecting hopper groove on one side away from the inner part of the annular circulation chamber is provided with an L-shaped connecting pipe, the interior of the L-shaped connecting pipe is connected with the inner part of the annular circulation chamber through the water collecting hopper groove, the inner wall surfaces on the left and right sides of the annular circulation chamber are fixedly installed with triangular diverter plates, and the triangular diverter plates can guide the cooling water entering or discharged from the annular circulation chamber;

[0008] A separation arc plate, wherein the number of the separation arc plates is two, and the two separation arc plates are fixedly mounted on the front and rear surfaces of the top surface of the left end of the annular circulation chamber, respectively. A guide short arc plate is fixedly mounted on one side surface of the separation arc plate away from the center of the annular circulation chamber, and the guide short arc plate can guide the cooling water passing through the outer side of the separation arc plate;

[0009] The long arc guide plate is fixedly mounted on the inner wall surface of the right end of the annular circulation chamber.

[0010] Preferably, the left side surfaces of the short arc guide plate and the long arc guide plate are both provided with water holes. When cooling water passes through the water holes, part of the flowing water will flow normally through the water holes, thereby reducing the impact force of the cooling water on the short arc guide plate and the long arc guide plate, and extending the service life of the short arc guide plate and the long arc guide plate.

[0011] Preferably, the L-shaped connecting pipes at the left and right ends of the annular circulation chamber are respectively connected to the inside of the water inlet and the water outlet.

[0012] Preferably, the bottom surface of the separation arc plate is fixedly connected to the upper surface of the matching portion, and the separation arc plate can completely separate the cooling water entering the annular circulation cavity.

[0013] Preferably, the bottom surfaces of the short-arc guide plate and the long-arc guide plate are both fixedly connected to the upper surface of the matching part.

[0014] Preferably, spoiler spheres are fixedly mounted on both the front and rear surfaces of the triangular splitter plate.

[0015] Compared with the prior art, the utility model provides an injection mold with a conformal cooling channel, which has the following beneficial effects:

[0016] 1. The injection mold with conformal cooling flow channel can form a circulation pipeline with the water inlet and the water outlet through the cooperation of the set annular circulation cavity, the water collecting hopper and the L-shaped connecting pipe, so as to improve the utilization rate of the water source, and guide the flow of cooling water entering and discharging the annular circulation cavity through the set triangular diverter plate, so as to avoid the impact convection of cooling water when entering or discharging the annular circulation cavity, which affects the flow of cooling water and the cooling effect on the injection molded parts. The cooling water entering the flow channels on the front and rear sides of the annular circulation cavity can be separated by the set separation arc plate. At the right end of the annular circulation cavity of the flow channel, the separated water flows are mixed to reduce the temperature of the cooling water and improve the cooling effect, so as to avoid the gradual increase of the temperature of the cooling water when flowing from the left end to the right end of the annular circulation cavity, which leads to a large temperature difference between the left and right sides of the injection molded parts and affects the cooling molding effect of the injection molded parts.

[0017] 2. The injection mold with conformal cooling flow channels can perform a small amount of turbulence treatment on the cooling water entering or discharged from the annular circulation cavity by setting a turbulent sphere, thereby reducing the cooling water flow rate and increasing the time the cooling water stays in the annular circulation cavity, while reducing the kinetic energy of the water flow, so that the cooling water in the two flow channels can be better mixed and discharged when mixed and discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the front section of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model at A;

[0020] Figure 3 It is a schematic diagram of the structure inside the molding part of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the utility model at B;

[0022] Figure 5 This is a schematic diagram of the structure of the utility model at C

[0023] Figure 6 It is a schematic diagram of the overall structure of the utility model.

[0024] In the figure: 1, forming part; 2, matching part; 3, water inlet; 4, water outlet; 501, annular circulation chamber; 502, water collecting hopper; 503, L-shaped connecting pipe; 504, triangular diverter plate; 505, dividing arc plate; 506, short arc guide plate; 507, long arc guide plate; 508, water permeable hole; 6, spoiler sphere. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: an injection mold with a conformal cooling channel, including a molding part 1, a mating part 2 is fixedly installed at the bottom end of the molding part 1, a water inlet hole 3 and a water outlet hole 4 are respectively opened at the left and right ends of the interior of the mating part 2, and a diversion component is arranged inside the molding part 1.

[0026] The diversion component includes: an annular circulation chamber 501, a dividing arc plate 505 and a guide long arc plate 507. The annular circulation chamber 501 is opened on the bottom surface of the forming part 1. The inner wall surfaces on the left and right sides of the annular circulation chamber 501 are provided with water collecting hoppers 502. The water collecting hopper 502 is provided with an L-shaped connecting pipe 503 on the side surface away from the annular circulation chamber 501. The L-shaped connecting pipes 503 at the left and right ends of the annular circulation chamber 501 are respectively connected with the interior of the water inlet hole 3 and the water outlet hole 4. The interior of the annular circulation chamber 501 is connected with the interior of the water inlet hole 3 and the water outlet hole 4 through the L-shaped connecting pipes 503 and the water collecting hopper 502 on both sides, forming a complete circulation pipeline. Cooling water can enter the annular circulation chamber 501 through the water inlet hole 3, flow from the left end to the right end of the annular circulation chamber 501, and then enter the water outlet hole 4 for discharge. The discharged cooling water will enter the water inlet hole 3 again after cooling treatment, so as to perform circulating cooling and avoid wasting water resources.

[0027] Triangular diverter plates 504 are fixedly installed on the inner wall surfaces on both sides of the annular circulation chamber 501. When the flowing water enters the annular circulation chamber 501 through the L-shaped connecting pipe 503 on the left, when it flows to the triangular diverter plate 504 on the left, it will be diverted and flow along the front and rear surfaces of the triangular diverter plate 504, so that the cooling water is divided into two front and rear flow channels in the annular circulation chamber 501 to flow, thereby preventing the cooling water from colliding with the inner wall of the annular circulation chamber 501 at the entrance when flowing into the annular circulation chamber 501, causing convection and affecting the flow of the cooling water. At the same time, when the cooling water enters and is discharged from the annular circulation chamber 501, it will merge along the front and rear surfaces of the triangular diverter plate 504 on the right, thereby preventing the flowing water in the two flow channels from colliding and convection at the outlet, thereby affecting the outflow.

[0028] There are two separating arc plates 505, which are respectively fixedly mounted on the front and rear surfaces of the top surface at the left end of the annular circulation chamber 501. The bottom surface of the separating arc plate 505 is fixedly connected to the upper surface of the matching part 2. The separating arc plate 505 can separate the cooling water entering the front and rear sections of the flow channels of the annular circulation chamber 501, and divide the cooling water into two parts close to the inner wall and outer wall of the annular circulation chamber 501. When the cooling water passes through the left end of the annular circulation chamber 501, the cooling water close to the outer wall of the annular circulation chamber 501 will absorb more heat during the cooling of the injection molded part. When the cooling water flows to the right end of the annular circulation chamber 501, the two parts of cooling water separated by the separating arc plate 505 will mix, thereby reducing the temperature of the cooling water and improving the cooling effect.

[0029] When the cooling water circulates inside the annular circulation chamber 501, it flows from the left side to the right side, and the water temperature will continue to rise. The heat absorbed by the water flow close to the outer wall of the annular circulation chamber 501 is much higher than the water flow close to the inner wall of the annular circulation chamber 501. The water flows on both sides are completely separated at the left end of the annular circulation chamber 501, and the two water flows are mixed when passing through the middle end of the internal flow channel of the annular circulation chamber 501, thereby lowering the cooling water temperature, reducing the temperature difference between the left and right ends of the injection molded part, improving the uniformity of cooling, and avoiding the large temperature difference on both sides that affects the molding effect of the injection molded part.

[0030] A short arc guide plate 506 is fixedly installed on the side surface of the separation arc plate 505 away from the center of the annular circulation chamber 501, and a long arc guide plate 507 is fixedly installed on the inner wall surface of the right end of the annular circulation chamber 501. The left surfaces of the short arc guide plate 506 and the long arc guide plate 507 are both provided with water holes 508, and the bottom surfaces of the short arc guide plate 506 and the long arc guide plate 507 are both fixedly connected to the upper surface of the matching part 2. The separation arc plate 505 and the long arc guide plate 507 can guide the water flow, so that the cooling water away from the outer wall side of the annular circulation chamber 501 can flow through the inner arc surface of the separation arc plate 505 and the long arc guide plate 507, and then flow to the side close to the outer wall of the annular circulation chamber 501, so that the cooling water on both sides is mixed, thereby improving the heat exchange efficiency, thereby further improving the cooling uniformity and reducing the temperature difference at both ends of the injection molded part.

[0031] The front and rear surfaces of the triangular diverter plate 504 are fixedly installed with spoiler balls 6. When the cooling water passes through the triangular diverter plate 504 and enters the annular circulation chamber 501, the spoiler balls 6 will disturb the cooling water, thereby reducing the flow rate of the water flow, so that the flowing water can stay in the annular circulation chamber 501 for a longer time, thereby improving the heat exchange efficiency. At the same time, when the cooling water is discharged through the triangular diverter plate 504, the spoiler balls 6 will also disturb the water flow, further reducing the kinetic energy of the water flow, so that the cooling water in the two flow channels can be mixed and discharged. The impact of convection can be further reduced, and it can be better discharged through the L-shaped connecting pipe 503 and the water collecting hopper 502 on the right.

[0032] In the present invention, when in use, cooling water is passed into the interior of the annular circulation chamber 501 through the water inlet hole 3. When the cooling water reaches the water inlet at the left end of the annular circulation chamber 501, it will be diverted along the arc surfaces on the front and rear sides of the left triangular diverter plate 504, and enter the flow channels at the front and rear ends of the annular circulation chamber 501 respectively, avoiding impact convection at the water inlet of the annular circulation chamber 501, which affects the inflow of cooling water. At the same time, the cooling water entering the flow channel can be separated by the provided dividing arc plate 505, and the cooling water passing through the annular circulation chamber 501 is diverted. 01, the two separated water flows will be mixed, the temperature difference between the left and right ends of the injection molded part will be reduced, and the cooling uniformity will be improved. At the same time, when the cooling water flows inside the annular circulation cavity 501, it will be guided by the guide short arc plate 506 and the guide long arc plate 507, so that the cooling water away from the outer wall side of the annular circulation cavity 501 can flow through the inner arc surface of the separation arc plate 505 and the guide long arc plate 507, and then flow to the outer wall side of the annular circulation cavity 501 for mixing, thereby further improving the mixing efficiency and cooling efficiency of the cooling water.

[0033] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An injection mold with a conformal cooling channel, comprising a molding part (1), a mating part (2) being fixedly mounted at the bottom end of the molding part (1), a water inlet hole (3) and a water outlet hole (4) being respectively provided at the left and right ends of the mating part (2), Features: A flow diversion component is arranged inside the molding portion (1), and the flow diversion component comprises: An annular circulation cavity (501), the annular circulation cavity (501) being provided on the bottom surface of the forming portion (1), the inner wall surfaces on both left and right sides of the annular circulation cavity (501) being provided with water collecting hopper grooves (502), the surface of the water collecting hopper groove (502) being provided with an L-shaped connecting pipe (503) on one side away from the inner surface of the annular circulation cavity (501), and the inner wall surfaces on both left and right sides of the annular circulation cavity (501) being provided with triangular flow dividing plates (504) fixedly mounted thereon; A separation arc plate (505), wherein the number of the separation arc plates (505) is two, and the two separation arc plates (505) are respectively fixedly mounted on the front and rear surfaces of the top surface of the left end of the annular circulation chamber (501), and a guide short arc plate (506) is fixedly mounted on a surface of one side of the separation arc plate (505) away from the center of the annular circulation chamber (501); A flow guide long arc plate (507), wherein the flow guide long arc plate (507) is fixedly mounted on the inner wall surface at the right end inside the annular circulation chamber (501).

2. The injection mold with conformal cooling channels according to claim 1, Features: The left surfaces of the short-arc guide plate (506) and the long-arc guide plate (507) are both provided with water-permeable holes (508).

3. The injection mold with conformal cooling channels according to claim 1, Features: The L-shaped connecting pipes (503) at the left and right ends of the annular circulation chamber (501) are respectively connected to the inside of the water inlet hole (3) and the water outlet hole (4).

4. The injection mold with conformal cooling channels according to claim 1, Features: The bottom surface of the separation arc plate (505) is fixedly connected to the upper surface of the matching portion (2).

5. The injection mold with conformal cooling channels according to claim 1, Features: The bottom surfaces of the short-arc guide plate (506) and the long-arc guide plate (507) are both fixedly connected to the upper surface of the matching portion (2).

6. The injection mold with conformal cooling channels according to claim 1, Features: Flow-turbulating spheres (6) are fixedly mounted on both the front and rear surfaces of the triangular flow splitter plate (504).

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