Cooling mechanism for injection mold

Abstract

The utility model discloses a cooling mechanism for an injection mold, and relates to the technical field of cooling. An injection mold cooling mechanism comprises an injection molding bottom mold, a mounting frame is fixedly connected to the top of the injection molding bottom mold, two electric push rods are fixedly mounted at the top of the mounting frame, the telescopic ends of the two electric push rods slidably penetrate through the top of the mounting frame and are fixedly connected with an upper mold base, and the interiors of the injection molding bottom mold and the upper mold base are each of a cavity structure; the mold cooling structure is located on the injection molding bottom mold, and through cooperation of the upper mold base, the hoses, the liquid discharging pipe and the liquid inlet pipe, the two hoses can convey cooling liquid into the upper mold base to flow, so that cooling treatment on the top of the mold is facilitated; the cooling cavity in the injection molding bottom mold can cool the surface except the top of the mold, so that the surface of the mold can be cooled, the deformation of a plastic part caused by non-uniform cooling is avoided, and the production quality of the plastic part is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cooling technical field especially relates to a injection mold cooling mechanism. BACKGROUND

[0002] Injection mold is a kind of tool for producing plastic product, and is also the tool for giving plastic product complete structure and accurate size.Injection molding is also called injection molding, which is a kind of molding method of injection and molding, Chinese utility model patent, authorization announcement number "CN222156539U" discloses a injection mold cooling mechanism, the utility model provides a injection mold cooling mechanism, belongs to mold cooling technical field.The injection mold cooling mechanism, including lower die seat, upper die seat and limit rod, the top four corners of lower die seat are installed limit rod respectively, the top of limit rod is connected with the corner of upper die seat, the top of lower die seat is equipped with shaping groove, the inside of lower die seat is provided with cooling chamber near shaping groove, one side of lower die seat is equipped with liquid supply mechanism, one end of liquid supply mechanism is connected with the inside of cooling chamber, the side of lower die seat away from liquid supply mechanism is equipped with shunt pipeline, the shunt pipeline includes drain pipe, reversing valve, first pipeline and second pipeline, the drain pipe is connected in the inside of cooling chamber, one end of drain pipe extends to the outside of lower die seat, and is communicated with the input end of reversing valve.

[0003] The above technical scheme lacks the structure for cooling the top of the mold in the use process, so that the whole mold and product parts cannot be uniformly and effectively cooled, the side without cooling may generate thermal stress concentration in the area of injection molded part due to the temperature being too high, leading to deformation or cracking of injection molded part, meanwhile, the uneven temperature may also lead to the appearance of weld marks on the surface of injection molded part, affecting the appearance and strength, so that the product has quality problems such as warping and deformation, therefore, we propose a injection mold cooling mechanism. UTILITY MODEL CONTENTS

[0004] The utility model discloses a injection mold cooling mechanism can solve the problem that the whole mold and product parts cannot be uniformly and effectively cooled due to the lack of structure for cooling the top of the mold, the side without cooling may generate thermal stress concentration in the area of injection molded part due to the temperature being too high, leading to deformation or cracking of injection molded part, meanwhile, the uneven temperature may also lead to the appearance of weld marks on the surface of injection molded part, affecting the appearance and strength, so that the product has quality problems such as warping and deformation.

[0005] To achieve the above object, the utility model provides the following technical scheme: a injection mold cooling mechanism, comprising:

[0006] The bottom mold is fixedly connected with a mounting frame at the top, two electric push rods are fixedly installed at the top of the mounting frame, the telescopic ends of the two electric push rods are slidably penetrated through the top of the mounting frame and are fixedly connected with an upper mold base, and the interiors of the bottom mold and the upper mold base are cavity structures.

[0007] The mold cooling structure is located on the bottom mold.

[0008] The mold cooling structure comprises a cooling water tank, a water pump, a second connecting pipe and a liquid inlet pipe, the water pump is fixedly installed in the interior of the cooling water tank, the water outlet end of the water pump is fixedly connected with one end of the second connecting pipe, the second connecting pipe is fixedly installed on the side of the cooling water tank close to the bottom mold, the liquid inlet pipe is fixedly connected with the second connecting pipe and communicates with the interior thereof, the end of the liquid inlet pipe away from the second connecting pipe communicates with the interior of the bottom mold, the side of the bottom mold away from the liquid inlet pipe is fixedly connected with a liquid outlet pipe, the end of the liquid outlet pipe away from the bottom mold is fixedly connected with a first communicating pipe, the first communicating pipe and the second connecting pipe are both fixedly connected with a hose, the ends of the two hoses away from the second connecting pipe and the first communicating pipe are fixedly connected with the two sides of the upper mold base, and the two hoses both communicate with the interior of the upper mold base.

[0009] Preferably, the two sides of the bottom mold are both fixedly connected with a cooling tank, the two sides of the first communicating pipe are both fixedly connected with a cooling return pipe, and the two cooling return pipes both penetrate through the corresponding cooling tank and communicate with the interior of the cooling water tank.

[0010] Preferably, a plurality of heat dissipation fins are fixedly connected on the outer surfaces of the two cooling return pipes, and the plurality of heat dissipation fins are all fixedly installed in the corresponding cooling tank.

[0011] Preferably, a plurality of ventilation openings are formed in the opposite sides of the two cooling tanks, and a draught fan is installed in the interior of each ventilation opening.

[0012] Preferably, the top of the upper mold base is fixedly connected with an injection pipe, and the bottom end of the injection pipe penetrates through the upper mold base.

[0013] Preferably, the two cooling return pipes are both arranged in the interior of the corresponding cooling tank in an "S" shape.

[0014] Compared with the prior art, the mold cooling structure has the following beneficial effects:

[0015] 1. The mold cooling structure, through the cooperation of the upper mold base, the hoses, the liquid outlet pipe and the liquid inlet pipe, can make the two hoses deliver the cooling liquid into the upper mold base to flow, thereby facilitating the cooling treatment of the top of the mold, making the cooling cavity in the bottom mold capable of cooling the surface of the top of the mold, and making the surfaces of the mold all capable of being cooled, so as to avoid the uneven cooling and the deformation of the plastic parts, and further improve the production quality of the plastic parts. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model is further illustrated below in combination with the drawings and embodiments:

[0017] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0018] Figure 2 It is the upper die holder structure schematic diagram of the utility model;

[0019] Figure 3 It is the injection molding bottom die section structure schematic diagram of the utility model;

[0020] Figure 4 It is the cooling box section structure schematic diagram of the utility model.

[0021] Reference signs: 1, injection molding bottom die;2, mounting frame;3, electric push rod;4, upper die holder;5, hose;6, cooling water tank;7, ventilation opening;8, cooling box;9, exhaust fan;10, cooling return pipe;11, heat dissipation fin;12, first communication pipe;13, liquid discharge pipe;14, second connecting pipe;15, water pump;16, liquid inlet pipe. DETAILED DESCRIPTION

[0022] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0023] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as the limitation of the utility model.

[0024] In the description of the utility model, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described to the first, the second, it is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0025] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be understood broadly, and the person skilled in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0026] Referring to Figures 1-4 The utility model provides a technical scheme: a cooling mechanism of injection mold, include:

[0027] Injection bottom die 1, the top of injection bottom die 1 is fixedly connected with mounting bracket 2, two electric push rods 3 are fixedly installed at the top of mounting bracket 2, the telescopic end of two electric push rods 3 is slidably penetrated through the top of mounting bracket 2 and is fixedly connected with upper die holder 4, the inside of injection bottom die 1 and upper die holder 4 is cavity structure, the top of upper die holder 4 is fixedly connected with injection pipe, and the bottom end of injection pipe penetrates upper die holder 4;

[0028] Mold cooling structure, mold cooling structure is located on injection bottom die 1;

[0029] Mold cooling structure includes cooling water tank 6, water pump 15, second connecting pipe 14 and liquid inlet pipe 16, water pump 15 is fixedly installed in the inside of cooling water tank 6, the drainage end of water pump 15 is fixedly connected with one end of second connecting pipe 14, second connecting pipe 14 is fixedly installed cooling water tank 6 close to one side of injection bottom die 1, liquid inlet pipe 16 is fixedly connected on second connecting pipe 14 and is communicated with its inside, the end of liquid inlet pipe 16 away from second connecting pipe 14 is communicated with the inside of injection bottom die 1, and one side of injection bottom die 1 away from liquid inlet pipe 16 is fixedly connected with liquid outlet pipe 13, one end of liquid outlet pipe 13 away from injection bottom die 1 is fixedly connected with first communicating pipe 12, and the hose 5 is fixedly connected on first communicating pipe 12 and second connecting pipe 14, and the end of two hoses 5 away from second connecting pipe 14 and first communicating pipe 12 is fixedly connected on the both sides of upper die holder 4, and two hoses 5 are communicated with the inside of upper die holder 4.

[0030] The both sides of injection bottom die 1 are fixedly connected with cooling box 8, and the both sides of first communicating pipe 12 are fixedly connected with cooling return pipe 10, two cooling return pipes 10 are penetrated through corresponding cooling box 8 and are communicated with the inside of cooling water tank 6, a plurality of radiating fins 11 are fixedly connected on the outer surface of two cooling return pipes 10, a plurality of radiating fins 11 are fixedly installed in corresponding cooling box 8, and two cooling return pipes 10 are arranged in the inside of corresponding cooling box 8 in the shape of "S".

[0031] The opposite faces of two cooling boxes 8 are all provided with a plurality of ventilation openings 7, and exhaust fan 9 is installed in the inside of a plurality of ventilation openings 7.

[0032] Further, in use of the device, two electric push rods 3 are started by connecting an external power source, which will drive the upper mold base 4 to move downward, so that the bottom of the upper mold base 4 can be in close contact with the top of the injection mold 1. When the upper mold base 4 moves downward, two hoses 5 will also move downward at the same time. Then, the molten material is discharged from the injection tube into the injection mold 1 for shaping. When the material in the injection mold 1 is cooled, the water pump 15 is started by connecting an external power source, which will pump the coolant in the cooling water tank 6 out and into the liquid inlet pipe 16 and the hose 5 above it through the second connecting pipe 14. The liquid inlet pipe 16 can discharge the coolant into the cavity in the injection mold 1. The cooling cavity in the injection mold 1 can cool the top surface of the mold, so that the coolant is discharged from the drain pipe 13 into the first communication pipe 12.

[0033] Further, in use of the device, the second connecting pipe 14 delivers the coolant into the upper mold base 4 through the hose 5 above it, so that the cooling cavity in the upper mold base 4 can cool the top of the mold. The cooling cavity in the upper mold base 4 can discharge the coolant from the hose 5 away from the cooling water tank 6 into the first communication pipe 12. The discharged coolant will be divided into two cooling return pipes 10 through the first communication pipe 12, and then delivered in the two cooling return pipes 10. When the coolant is delivered in the cooling return pipes 10 to the cooling tank 8, three exhaust fans 9 on the cooling tank 8 are started by connecting an external power source. Two exhaust fans 9 are exhaust, and one exhaust fan 9 is intake. Therefore, the multiple heat dissipation fins 11 can discharge the heat brought out by the coolant, so that the cooled coolant can be discharged into the cooling water tank 6 for recycling.

[0034] Through the cooperation of the upper mold base 4, the hose 5, the drain pipe 13 and the liquid inlet pipe 16, the two hoses 5 can deliver the coolant into the upper mold base 4 for flow, so as to cool the top of the mold. The cooling cavity in the injection mold 1 can cool the top surface of the mold, so that the top surface of the mold can be cooled. This avoids uneven cooling and deformation of the plastic parts, and further improves the production quality of the plastic parts.

[0035] Structure description: injection mold 1: bottom mold during injection molding, used for containing and shaping molten plastic;

[0036] Electric push rod 3: used for driving the up and down movement of the upper mold base 4, so as to complete the injection and cooling process with the injection mold 1;

[0037] Upper mold base 4: one of the key components of the injection molding machine, which carries the upper half of the mold and closely cooperates with the injection mold 1 during injection molding. The bottom of the upper mold base 4 is designed with a cooling cavity for cooling the shaped plastic parts;

[0038] Hose 5: two hoses 5 are connected between the upper mold base 4 and the cooling system respectively, so as to deliver the cooling liquid into the cooling cavity in the upper mold base 4 and the cooling system of the injection mold base 1;

[0039] Drain pipe 13: used for draining the cooled cooling liquid in the injection mold base 1 and guiding to the return flow part of the cooling system. It ensures the effective recycling of the cooling liquid;

[0040] Cooling water tank 6: a container for storing the cooling liquid, during the injection and cooling process, the cooling liquid is pumped out from the cooling water tank 6, after passing through the cooling system, it flows back to the cooling water tank 6 for recycling;

[0041] Second connecting pipe 14, liquid inlet pipe 16 and hose 5: the pipes connecting the cooling water tank 6 and the cooling system, which ensure the effective delivery of the cooling liquid from the cooling water tank 6 to each part of the cooling system;

[0042] Liquid inlet pipe 16: the pipe for delivering the cooling liquid from the cooling system to the cooling cavity inside the injection mold base 1, which ensures that the cooling liquid can be evenly distributed in the cooling cavity of the injection mold base 1 to achieve effective cooling effect;

[0043] Exhaust fan 9: used for enhancing the air flow in the cooling box 8, thereby accelerating the heat dissipation. Among the three exhaust fans, two are used for exhaust, and one is used for intake, so as to form effective air circulation;

[0044] Cooling box 8: used for receiving the cooling liquid returned from the cooling return pipe 10, and dissipating the heat in the cooling liquid to the air through the heat dissipation fins 11 and the exhaust fan 9;

[0045] Heat dissipation fins 11: a heat dissipation element installed inside the cooling box 8, which increases the heat dissipation area of the cooling liquid, thereby improving the heat dissipation efficiency;

[0046] First communication pipe 12: used for connecting the drain pipe 13 and the cooling return pipe 10, so as to ensure the smooth circulation of the cooling liquid in the cooling system;

[0047] Cooling return pipe 10: the pipe for delivering the cooled cooling liquid from the cooling box 8 back to the cooling water tank 6. It ensures the continuous recycling of the cooling liquid in the entire cooling system.

[0048] The above embodiment of the present application is described in detail in combination with the drawings, but the present application is not limited to the above embodiment, and various changes can be made within the knowledge range of ordinary skilled in the art without departing from the purpose of the present application.

Claims

1. A cooling mechanism for an injection mold, characterized in that, include: Injection mold (1), the top of injection mold (1) is fixedly connected to mounting bracket (2), the top of mounting bracket (2) is fixedly installed with two electric push rods (3), the telescopic ends of the two electric push rods (3) slide through the top of mounting bracket (2) and are fixedly connected to upper mold base (4), the interior of injection mold (1) and upper mold base (4) are both hollow structures; The mold cooling structure is located on the injection bottom mold (1); The mold cooling structure includes a cooling water tank (6), a water pump (15), a second connecting pipe (14), and an inlet pipe (16). The water pump (15) is fixedly installed inside the cooling water tank (6), and the drain end of the water pump (15) is fixedly connected to one end of the second connecting pipe (14). Among them, the second connecting pipe (14) is fixedly installed on the side of the cooling water tank (6) close to the injection mold (1), the liquid inlet pipe (16) is fixedly connected to the second connecting pipe (14) and communicates with its interior, and the end of the liquid inlet pipe (16) away from the second connecting pipe (14) is communicated with the interior of the injection mold (1). Among them, the side of the injection mold (1) away from the liquid inlet pipe (16) is fixedly connected to the drain pipe (13), and the end of the drain pipe (13) away from the injection mold (1) is fixedly connected to the first connecting pipe (12). The first connecting pipe (12) and the second connecting pipe (14) are both fixedly connected to the hoses (5). The ends of the two hoses (5) away from the second connecting pipe (14) and the first connecting pipe (12) are respectively fixedly connected to the two sides of the upper mold base (4). The two hoses (5) are both connected to the interior of the upper mold base (4).

2. The injection mold cooling mechanism according to claim 1, characterized in that: Cooling boxes (8) are fixedly connected to both sides of the injection mold (1), and cooling return pipes (10) are fixedly connected to both sides of the first connecting pipe (12). The two cooling return pipes (10) pass through the corresponding cooling boxes (8) and are connected to the interior of the cooling water tank (6).

3. The injection mold cooling mechanism according to claim 2, characterized in that: Multiple heat dissipation fins (11) are fixedly connected to the outer surfaces of the two cooling return pipes (10), and the multiple heat dissipation fins (11) are all fixedly installed in the corresponding cooling box (8).

4. The injection mold cooling mechanism according to claim 2, characterized in that: Multiple ventilation openings (7) are provided on the opposite sides of both cooling boxes (8), and exhaust fans (9) are installed inside the multiple ventilation openings (7).

5. The injection mold cooling mechanism according to claim 1, characterized in that: The top of the upper mold base (4) is fixedly connected to an injection tube, and the bottom end of the injection tube passes through the upper mold base (4).

6. The injection mold cooling mechanism according to claim 2, characterized in that: Both cooling return pipes (10) are arranged in an "S" shape inside the corresponding cooling box (8).

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