Injection mold with rapid cooling function

Abstract

The injection mold comprises an upper mold and a lower mold installed on the lower side of the upper mold, a mold block is fixedly connected to the center of the outer wall of the lower end of the upper mold, and a mold cavity with an upward opening is formed in the outer wall of the upper end of the lower mold to provide a forming space. An injection molding opening is formed in the outer wall of the upper end of the upper mold to guide the material conveying direction, a plurality of liquid inlets are formed in the outer wall of the right end of the lower mold at equal intervals to be connected with pipelines for conveying cooling liquid, and a plurality of liquid outlets are formed in the outer wall of the left end of the lower mold at equal intervals to discharge used cooling liquid. Cooling pipes are fixedly connected between the multiple liquid inlets and the multiple liquid outlets so as to limit the circulation position of cooling liquid, the situation that raw materials adhere to the inner wall of an original injection molding opening in the injection molding process is avoided by installing a guide opening and a protection pipe, the tedious degree of cleaning the original injection molding opening is reduced, and the service life of the mold is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field related to injection molds, and particularly relates to a fast-cooling injection mold. Background Art

[0002] Design more cooling channels to ensure that the coolant can circulate fully in the mold. Use low-temperature cooling media such as ice water and liquid nitrogen to increase the cooling speed. However, during the injection molding process, the inside of the injection port is prone to adhesion of injection molding materials after long-term use. As a result, when the injection molding materials circulate, it is easy to drive other attached injection molding materials to move at the same time, resulting in changes in color or different materials of the completed mold. Utility Model Content

[0003] The purpose of the utility model is to provide a fast cooling injection mold to solve the problem raised in the above background technology that the injection molding material is easily attached to the inside of the injection port after long-term use during the injection molding process.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a rapid cooling injection mold, comprising an upper mold and a lower mold installed on the lower side of the upper mold;

[0005] A module is fixedly connected to the center of the outer wall of the lower end of the upper mold;

[0006] An upwardly opening mold cavity is formed inside the outer wall of the upper end of the lower mold to provide a molding space;

[0007] An injection port is provided inside the outer wall of the upper end of the upper mold to guide the direction of material transportation. A plurality of liquid inlets are equidistantly provided on the outer wall of the right end of the lower mold to connect with the pipeline for conveying coolant. A plurality of liquid outlets are equidistantly provided on the outer wall of the left end of the lower mold to discharge the used coolant. A cooling pipe is fixedly connected between the plurality of liquid inlets and liquid outlets to limit the circulation position of the coolant.

[0008] A guide port is provided inside the injection port, and a protective tube which runs downward through the interior of the injection port is fixedly connected to the outer wall of the lower end of the guide port.

[0009] Preferably, a slot is provided inside the outer wall of the upper end of the upper mold, and a baffle is fixedly connected to the circular outer wall of the guide opening to limit the placement position of the guide opening.

[0010] Preferably, the guide port and the protective tube are integrally die-cast, and both the guide port and the protective tube are made of aluminum alloy.

[0011] Preferably, a fixing sleeve is screwed onto the other end of each of the plurality of liquid outlets, and a transparent shell is fixedly connected to the outer wall of the left end of each of the plurality of fixing sleeves.

[0012] Preferably, a plurality of filters are provided inside the plurality of transparent shells to intercept impurities in the coolant, and a connection port is fixedly connected to the outer wall of the left end of the plurality of transparent shells.

[0013] Preferably, the threaded areas on the left sides of the plurality of connection ports and the liquid outlet are of the same size, and the mesh densities of the plurality of filter screens are different.

[0014] Preferably, an ejection mechanism is provided inside the lower mold to eject the mold after forming, and the four corners of the upper outer wall of the lower mold are fixedly connected with guide rods that pass through the upper mold upward to limit the moving direction of the upper mold.

[0015] Preferably, the upper end outer walls of the plurality of guide rods are fixedly connected to a fixing plate, and the outer sides of the plurality of guide rods are sleeved with a spring.

[0016] Preferably, a groove is provided inside the outer wall of the lower end of the upper mold for storing the spring in the contracted state, and the plurality of cooling tubes are all fitted into the mold cavity.

[0017] Compared with the prior art, the present invention provides a rapid cooling injection mold with the following beneficial effects:

[0018] 1. Install the guide port and protective tube, insert the guide port and protective tube into the injection port, and perform injection molding through the guide port and protective tube. After working for a period of time, the guide port and protective tube can be taken out for replacement or cleaning to avoid the occurrence of raw material adhesion on the inner wall of the original injection port during the injection molding process, reduce the tediousness of cleaning the original injection port, and increase the service life of the mold.

[0019] 2. By installing a transparent shell and a filter, when the liquid is discharged from the outlet, the discharged coolant will flow through the filter and block the impurities in the coolant through the filter. At this time, you can observe the transparent shell and the amount of impurities blocked by the filter to determine whether the coolant needs to be replaced or cleaned, thereby avoiding excessive impurities in the coolant, which may cause the cooling channel to be blocked and unable to be visually viewed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a rapid cooling injection mold of the present utility model.

[0021] Figure 2 This is a schematic diagram of the front cross-sectional structure of a rapid cooling injection mold of the present invention.

[0022] Figure 3 This is a schematic diagram of the partial structure of the injection port area in a front view.

[0023] Figure 4 This is a schematic diagram of the partial structure of the liquid outlet area in a front view.

[0024] In the figure: 1. Upper mold; 2. Injection port; 3. Fixed plate; 4. Spring; 5. Lower mold; 6. Liquid inlet; 7. Mold cavity; 8. Liquid outlet; 9. Ejector mechanism; 10. Cooling pipe; 11. Guide rod; 12. Module; 13. Guide port; 14. Protective tube; 15. Slot; 16. Baffle; 17. Transparent shell; 18. Connecting port; 19. Filter; 20. Fixed sleeve. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The utility model provides Figure 1-4 A rapid cooling injection mold shown includes an upper mold 1 and a lower mold 5 installed on the lower side of the upper mold 1;

[0027] A module 12 is fixedly connected to the center of the lower outer wall of the upper mold 1;

[0028] An upwardly opening mold cavity 7 is formed inside the outer wall of the upper end of the lower mold 5 to provide a molding space;

[0029] An injection port 2 is provided inside the outer wall of the upper end of the upper mold 1 to guide the direction of the material transport. A plurality of liquid inlets 6 are equidistantly provided on the outer wall of the right end of the lower mold 5 to connect with the pipeline for conveying the coolant. A plurality of liquid outlets 8 are equidistantly provided on the outer wall of the left end of the lower mold 5 to discharge the used coolant. A cooling pipe 10 is fixedly connected between the plurality of liquid inlets 6 and the liquid outlets 8 to limit the flow position of the coolant. When performing the injection molding operation, the surface of the mold cavity 7 and the module 12 is first cleaned, and then the upper mold 1 and the external drive mechanism and the injection pipe are connected. The channels are connected, the injection pipe is aligned with the position of the injection port 2, and then the driving mechanism drives the upper mold 1 to move downward so that the module 12 is inserted into the mold cavity 7. Then the injection pipe transports the raw material and guides it through the injection port 2 to fill the gap between the module 12 and the mold cavity 7. Then, the coolant is transported from the liquid inlet 6 through the cooling pipe 10 to cool the model in the mold cavity 7. After flowing through the mold cavity 7, it is discharged from the liquid outlet 8. After cooling is completed, the upper mold 1 moves upward under the drive mechanism, and then the demoulding operation can be carried out;

[0030] A guide port 13 is provided inside the injection port 2, and a protective tube 14 is fixedly connected to the outer wall of the lower end of the guide port 13 and penetrates downward into the injection port 2. During the injection molding operation, the injection port 2 can be protected by the guide port 13 and the protective tube 14 to prevent the raw material from remaining on the inner wall of the injection port 2. After the injection molding is completed, the guide port 13 and the protective tube 14 can be taken out for cleaning or replacement.

[0031] like Figure 3 As shown, a slot 15 is provided inside the outer wall of the upper end of the upper mold 1, and a baffle 16 is fixedly connected to the circular outer wall of the guide port 13 to limit the placement position of the guide port 13. The guide port 13 and the protective tube 14 are integrally die-cast, and both the guide port 13 and the protective tube 14 are made of aluminum alloy material.

[0032] When installing the guide port 13 and the protective tube 14, the protective tube 14 can be directly inserted into the injection port 2. At this time, the baffle 16 will fall into the slot 15 to limit the position. The guide port 13 and the protective tube 14 are made of aluminum alloy material, which is the same as the material of the upper mold 1, to ensure the speed of the injection molding raw material flow.

[0033] like Figure 4 As shown, the other ends of the multiple liquid outlets 8 are all screwed with fixed sleeves 20, the left end outer walls of the multiple fixed sleeves 20 are fixedly connected with transparent shells 17, and the interiors of the multiple transparent shells 17 are provided with multiple filter screens 19 to intercept impurities in the coolant, and the left end outer walls of the multiple transparent shells 17 are all fixedly connected with connecting ports 18. The multiple connecting ports 18 and the left side threaded areas of the liquid outlets 8 are the same size, and the mesh densities of the multiple filter screens 19 are different.

[0034] After the coolant is discharged from the liquid outlet 8, the discharged coolant will flow into the interior of the transparent shell 17, and the impurities in the coolant will be filtered through the filter 19 inside the transparent shell 17, and then discharged from the connecting port 18. The impurity accumulation of the filter 19 can be observed through the transparent shell 17 to determine whether the coolant needs to be cleaned or replaced. The threaded position area of the connecting port 18 and the liquid outlet 8 is the same, so they are adapted to connect the pipes that guide the coolant discharge from the outside. At the same time, the filter 19 can be rinsed and cleaned by unscrewing the fixing sleeve 20. The filter 19 with different mesh densities can avoid the accumulation of impurities and maintain the fluidity of the coolant.

[0035] like Figure 1 and Figure 2As shown, an ejection mechanism 9 is provided inside the lower mold 5 to eject the mold after forming, and the four corners of the upper outer wall of the lower mold 5 are fixedly connected with guide rods 11 that pass through the upper mold 1 upward to limit the movement direction of the upper mold 1, and the upper outer walls of multiple guide rods 11 are fixedly connected with fixed plates 3, and the outer sides of multiple guide rods 11 are all sleeved with springs 4. A groove is opened inside the lower outer wall of the upper mold 1 for storing the spring 4 in the contracted state, and multiple cooling tubes 10 are all fitted into the mold cavity 7.

[0036] When the model is cooled and formed, the ejector rod inside the ejection mechanism 9 will eject the model from the mold cavity 7, making it easier to remove the mold. When the upper mold 1 moves, it will move up and down under the restriction of the guide rod 11, and when the upper mold 1 moves down, the spring 4 will shrink inside the groove. After the spring 4 shrinks and the upper mold 1 moves, it can assist the upper mold 1 to move up quickly.

[0037] The implementation principle of this embodiment is as follows: when performing the injection molding operation, first clean the surface of the mold cavity 7 and the module 12, then connect the upper mold 1 to the external driving mechanism and the injection molding pipe, align the injection molding pipe with the position of the injection port 2, and then the driving mechanism drives the upper mold 1 to move downward so that the module 12 is inserted into the mold cavity 7, and then the injection molding pipe transports the raw material, and guides the injection molding port 2 to fill the gap between the module 12 and the mold cavity 7, and then the coolant is transported from the liquid inlet 6 to cool the model in the mold cavity 7 through the cooling pipe 10. After flowing through the mold cavity 7, it is discharged to the outside from the liquid outlet 8. After cooling is completed, the upper mold 1 moves upward under the drive mechanism, and then the demoulding operation can be performed. During the injection molding operation, the injection molding port 2 can be protected by the guide port 13 and the protective tube 14 to prevent the raw material from remaining on the inner wall of the injection molding port 2. After the injection molding is completed, the guide port 13 and the protective tube 14 can be taken out for cleaning or replacement.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rapid cooling injection mold, comprising an upper mold (1) and a lower mold (5) mounted on the lower side of the upper mold (1); A module (12) is fixedly connected to the center of the lower outer wall of the upper mold (1); An upwardly opening mold cavity (7) is provided inside the outer wall of the upper end of the lower mold (5) to provide a molding space; An injection port (2) is provided inside the outer wall of the upper end of the upper mold (1) to guide the direction of material transportation; a plurality of liquid inlets (6) are equidistantly provided on the outer wall of the right end of the lower mold (5) to connect with the pipeline for conveying the coolant; a plurality of liquid outlets (8) are equidistantly provided on the outer wall of the left end of the lower mold (5) to discharge the used coolant; a cooling pipe (10) is fixedly connected between the plurality of liquid inlets (6) and the liquid outlets (8) to limit the circulation position of the coolant; Its characteristics are: A guide port (13) is provided inside the injection port (2), and a protective tube (14) is fixedly connected to the outer wall of the lower end of the guide port (13) and passes downward through the interior of the injection port (2).

2. The rapid cooling injection mold according to claim 1, characterized in that: A clamping groove (15) is provided inside the upper outer wall of the upper mold (1), and a baffle (16) is fixedly connected to the circular outer wall of the guide opening (13) to limit the placement position of the guide opening (13).

3. The rapid cooling injection mold according to claim 1, characterized in that: The guide port (13) and the protection tube (14) are integrally die-cast, and both the guide port (13) and the protection tube (14) are made of aluminum alloy material.

4. The rapid cooling injection mold according to claim 1, characterized in that: The other ends of the plurality of liquid outlets (8) are all screwed with a fixing sleeve (20), and the left end outer walls of the plurality of fixing sleeves (20) are all fixedly connected with a transparent shell (17).

5. The rapid cooling injection mold according to claim 4, characterized in that: A plurality of filter screens (19) are provided inside the plurality of transparent shells (17) to intercept impurities in the coolant, and a connection port (18) is fixedly connected to the outer wall of the left end of the plurality of transparent shells (17).

6. The rapid cooling injection mold according to claim 5, characterized in that: The threaded areas on the left sides of the plurality of connection ports (18) and the liquid outlet (8) are of the same size, and the mesh densities of the plurality of filter screens (19) are different.

7. The rapid cooling injection mold according to claim 1, characterized in that: An ejection mechanism (9) is provided inside the lower mold (5) to eject the mold after forming. The four corners of the upper end outer wall of the lower mold (5) are fixedly connected with guide rods (11) that pass through the upper mold (1) upward to limit the moving direction of the upper mold (1).

8. The rapid cooling injection mold according to claim 7, characterized in that: The upper outer walls of the plurality of guide rods (11) are all fixedly connected to a fixing plate (3), and the outer sides of the plurality of guide rods (11) are all sleeved with a spring (4).

9. The rapid cooling injection mold according to claim 1, characterized in that: A groove for storing the spring (4) in a contracted state is provided inside the outer wall of the lower end of the upper mold (1), and the plurality of cooling tubes (10) are all fitted into the mold cavity (7).

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