Refrigerator heat insulation plate injection mold

Abstract

The utility model provides a refrigerator insulation board injection mold which comprises a lower mold base and an upper mold base, an injection molding cavity is formed in the upper surface of the lower mold base, end cooling grooves are symmetrically formed in the two ends of the lower mold base, the end cooling grooves in the two ends of the lower mold base are communicated with a liquid inlet pipe and a liquid outlet pipe respectively, and side cooling grooves are symmetrically formed in the two sides of the lower mold base. The upper mold base is slidably connected with a guide rod through a guide hole, the end face of the upper mold base is fixedly connected with a draught fan through a mounting plate, and the middle of the upper surface of the upper mold base is fixedly connected with a material injection pipe through an injection molding opening. And two ends of the upper surface of the upper die holder are symmetrically connected with radiating fins respectively. According to the injection mold, the end cooling grooves, the side cooling grooves, the lower cooling grooves, the heat dissipation fins and the fan are matched, so that the injection mold can be used for comprehensively cooling injection products, and the production efficiency of the injection mold is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for a refrigerator heat insulation board. Background Art

[0002] An injection mold is a tool for producing plastic products, and is also a tool for giving plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the high-pressure injection of heated and melted plastic into the mold cavity by an injection molding machine, and after cooling and solidification, a molded product is obtained; and refrigerator insulation panels generally refer to a material or structure used inside a refrigerator to reduce heat transfer and maintain a constant temperature in a refrigerated or frozen room. Common types of refrigerator insulation panels include polyurethane foam insulation layers and vacuum insulation panels, so refrigerator insulation panels are mostly made by injection molds.

[0003] After searching, an injection mold disclosed in the prior art (application number: CN202122164540.1) records in the text that "driving telescopic rods are symmetrically fixedly installed on both sides of the static mold seat, and a dynamic mold seat is fixedly installed on the top of the driving telescopic rod. A lower mold cavity is opened in the middle of the top of the static mold seat, and an upper mold cavity is opened in the middle of the bottom end of the dynamic mold seat at a position corresponding to the lower mold cavity. A mounting frame is fixedly installed at one end of the middle of the static mold seat, and an electric telescopic rod is fixedly installed on the top of the mounting frame. A fixed plate is fixedly installed at one end of the electric telescopic rod, and air nozzles are symmetrically fixedly installed on the top and bottom of the fixed plate. Both air nozzles are fixedly connected to air supply pipes, and an axial flow fan is fixedly installed at one end of the bottom of the mounting frame."; This injection mold uses an electric telescopic rod to complete the injection molding. After that, the fixing plate and the air nozzle can be pushed forward so that the two air nozzles correspond to the upper mold cavity and the lower mold cavity respectively. At the same time, the axial flow fan and the air pipe are used together to convey the air flow to the air nozzle and blow it to the upper mold cavity and the lower mold cavity. The upper mold cavity and the lower mold cavity are cleaned at the same time to remove the waste and impurities remaining in the injection molding process, so as to avoid the accumulation of impurities and the impact of subsequent injection molded workpieces. There is no need for manual cleaning, which reduces the labor intensity of the staff. However, during the production process of the injection mold, the injection mold can only wait for the natural cooling of the injection molded product, which leads to low production efficiency of the injection mold. At the same time, some injection molds with cooling effect are only provided with corresponding cooling structures in some positions in the lower mold base, so that the injection molded product cannot be fully cooled. Therefore, the cooling efficiency and cooling effect of the injection mold need to be enhanced. Utility Model Content

[0004] In order to overcome the defects of the prior art, an injection mold for a refrigerator insulation board is provided to solve the problems raised in the above background technology.

[0005] To achieve the above object, an injection mold for a refrigerator heat insulation board is provided, including: a lower mold base and an upper mold base. A servo electric cylinder is fixedly connected to the outer side surface of the lower mold base, and the telescopic rod of the servo electric cylinder is fixedly connected to the upper mold base. An injection cavity is opened on the upper surface of the lower mold base, and end cooling grooves are symmetrically opened at both ends of the lower mold base. The end cooling grooves at both ends of the lower mold base are respectively communicated with a liquid inlet pipe and a liquid outlet pipe, and side cooling grooves are symmetrically opened on both sides of the lower mold base. Lower cooling grooves are symmetrically opened at the lower end of the lower mold base, and both ends of the side cooling grooves and the lower cooling grooves are respectively communicated with the end cooling grooves. At the same time, a cylinder is fixedly connected to the bottom of the injection cavity through a groove, the multi-stage telescopic rod of the cylinder is fixedly connected to a top plate, the top plate is slidably connected in the injection cavity, and guide rods are symmetrically connected to the upper surface of the lower mold base. The upper mold base is slidably connected to the guide rods through guide holes, a fan is fixedly connected to the end face of the upper mold base through a mounting plate, a feeding pipe is fixedly connected to the middle of the upper surface of the upper mold base through an injection port, and heat dissipation fins are symmetrically connected to both ends of the upper surface of the upper mold base respectively.

[0006] Preferably, the two groups of end cooling grooves opened at both ends of the lower mold base are both rectangular structures, and the length of the end cooling grooves is greater than the length of the corresponding side of the injection cavity. At the same time, the sizes of the injection cavity opened on the lower mold base and the top plate are adapted to each other.

[0007] Preferably, multiple groups of side cooling grooves are opened on both sides of the lower mold base respectively at parallel and equal intervals. The side cooling grooves are cylindrical structures, and the end cooling grooves and the side cooling grooves together form a rectangular structure. At the same time, the length of the side cooling grooves is greater than the length of the corresponding side of the injection cavity.

[0008] Preferably, multiple groups of lower cooling grooves are opened on both sides of the lower end of the lower mold base respectively at parallel and equal intervals. The lower cooling grooves are [ - shaped structures, and the cross section formed by the combination of the end cooling grooves and the lower cooling grooves is a U - shaped structure.

[0009] Preferably, four groups of guide rods are fixedly connected to the four corners of the upper surface of the lower mold base. The axial cross - sections of the four groups of guide rods are all T - shaped structures, and the sizes of the guide rods and the guide holes are adapted to each other.

[0010] Preferably, multiple groups of fixing grooves are opened on both ends of the upper surface of the upper mold base respectively at parallel and equal intervals. The multiple groups of fixing grooves are all strip - shaped structures, and the adjacent fixing grooves at both ends of the upper mold base are distributed in a staggered manner. At the same time, the upper end of the injection port opened on the upper mold base is a frustum - shaped structure.

[0011] Preferably, the heat dissipation fins are rectangular structures. The size of the lower end of the heat dissipation fins is adapted to the size of the fixing grooves, and multiple groups of through - holes are opened on the upper end of the heat dissipation fins at parallel and equal intervals along the length direction. The through - holes are circular structures.

[0012] Compared with the prior art, the beneficial effects of the utility model are: through the cooperation of the end cooling groove, the side cooling groove and the lower cooling groove, the lower mold base can perform multi-faceted cooling on the injection molded product in the injection cavity, and through the cooperation of the fan and the heat dissipation fins, the upper mold base can cooperate with the lower mold base to achieve comprehensive cooling of the injection molded product, thereby improving the cooling efficiency of the injection mold and enhancing the cooling effect of the injection mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view schematic diagram of an embodiment of the utility model.

[0014] Figure 2 It is a side view schematic diagram of an embodiment of the utility model.

[0015] Figure 3 It is a schematic top view of an embodiment of the utility model.

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the upper die base part of an embodiment of the utility model.

[0017] In the figure: 1. Lower mold base; 2. Lower cooling trough; 3. Liquid inlet pipe; 4. End cooling trough; 5. Guide rod; 6. Upper mold base; 7. Mounting plate; 8. Fan; 9. Heat dissipation fin; 10. Injection pipe; 11. Injection cavity; 12. Top plate; 13. Cylinder; 14. Liquid outlet pipe; 15. Side cooling trough; 16. Servo electric cylinder. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4 As shown, the utility model provides an injection mold for a refrigerator heat insulation board, comprising: a lower mold base 1 and an upper mold base 6, the outer side of the lower mold base 1 is fixedly connected to a servo electric cylinder 16, the telescopic rod of the servo electric cylinder 16 is fixedly connected to the upper mold base 6, the upper surface of the lower mold base 1 is provided with an injection cavity 11, the two ends of the lower mold base 1 are symmetrically provided with end cooling grooves 4, and the end cooling grooves 4 at the two ends of the lower mold base 1 are respectively connected to a liquid inlet pipe 3 and a liquid outlet pipe 14, and the two sides of the lower mold base 1 are symmetrically provided with side cooling grooves 15, the lower end of the lower mold base 1 is symmetrically provided with a lower cooling groove 2, and the side cooling grooves 15 and the lower cooling grooves 15 are connected to the lower cooling grooves 15. The two ends of the cooling groove 2 are respectively connected to the cooling groove 4, and the bottom of the injection cavity 11 is fixedly connected to the cylinder 13 through a groove, and the multi-stage telescopic rod of the cylinder 13 is fixedly connected to the top plate 12, and the top plate 12 is slidably connected in the injection cavity 11, and the upper surface of the lower mold base 1 is symmetrically connected to the guide rod 5, and the upper mold base 6 is slidably connected to the guide rod 5 through the guide hole, and the end face of the upper mold base 6 is fixedly connected to the fan 8 through the mounting plate 7, and the middle part of the upper surface of the upper mold base 6 is fixedly connected to the injection tube 10 through the injection port, and the two ends of the upper surface of the upper mold base 6 are symmetrically connected to the heat dissipation fins 9.

[0019] In this embodiment, when it is necessary to produce the refrigerator insulation board, the switch of the servo electric cylinder 16 is first started, and the telescopic rod of the servo electric cylinder 16 drives the upper mold base 6 to move downward, so that the upper mold base 6 and the lower mold base 1 are molded together, and then the electromagnetic valve switch corresponding to the injection pipe 10 is opened, and then the injection molding material can be injected into the injection cavity 11 opened by the lower mold base 1 through the injection port of the upper mold base 6, and then the electromagnetic valve switch corresponding to the liquid inlet pipe 3 is opened, and the coolant from the outside can flow into the end cooling groove 4 through the liquid inlet pipe 3, wherein a part of the coolant flows into the side cooling groove 15, and the remaining coolant flows into the lower cooling groove 2, so that the five parts of the injection cavity 11 can be adjusted. The surfaces are cooled synchronously, and the switch of the fan 8 is started. The fan 8 can blow air toward the heat dissipation fins 9 accordingly, and the heat on the upper surface of the injection cavity 11 will be transferred to the heat dissipation fins 9 through the upper mold base 6, thereby realizing the corresponding air cooling treatment. Therefore, the injection mold can perform comprehensive cooling treatment on the injection molded product and improve the production efficiency of the refrigerator insulation board. After the refrigerator insulation board is cooled, the reset switch of the servo electric cylinder 16 is started so that the upper mold base 6 can be reset. When the switch of the cylinder 13 is started, the multi-stage telescopic rod of the cylinder 13 pushes the top plate 12 to push the injection molded product out of the injection cavity 11, thereby completing the demolding of the injection molded product.

[0020] As a preferred embodiment, the two groups of end cooling grooves 4 opened at both ends of the lower mold base 1 are both rectangular structures, and the length of the end cooling grooves 4 is greater than the length of the corresponding side length of the injection cavity 11. At the same time, the sizes of the injection cavity 11 and the top plate 12 opened in the lower mold base 1 are matched.

[0021] In this embodiment, if Figure 1 and Figure 3 The structural setting of the cooling groove 4 at the end is convenient for the corresponding diversion and confluence of the coolant, and can also increase the cooling area of ​​the injection cavity 11, thereby helping to improve the cooling efficiency of the injection cavity 11.

[0022] As a preferred embodiment, multiple groups of side cooling grooves 15 are opened in parallel and equidistantly on both sides of the lower mold base 1, the side cooling grooves 15 are cylindrical in structure, and the end cooling grooves 4 and the side cooling grooves 15 are combined to form a U-shaped structure, and the length of the side cooling grooves 15 is greater than the length of the corresponding side of the injection cavity 11.

[0023] In this embodiment, if Figure 2 and Figure 3 The structural setting of the side cooling groove 15 can effectively increase the actual contact area of ​​the coolant on the side of the injection cavity 11, thereby assisting in enhancing the cooling effect of the coolant on the side of the injection cavity 11.

[0024] As a preferred embodiment, a plurality of lower cooling grooves 2 are respectively formed on both sides of the lower end of the lower die base 1 at equal intervals in parallel. The lower cooling grooves 2 are in a [shape structure, and the end cooling grooves 4 and the lower cooling grooves 2 together form a cross-section in a U shape structure.

[0025] In this embodiment, as Figure 1 and Figure 2 , the structural setting of the lower cooling grooves 2 can effectively increase the actual contact area of the coolant with the bottom of the injection cavity 11, thereby assisting in enhancing the cooling effect of the coolant on the bottom of the injection cavity 11.

[0026] As a preferred embodiment, four groups of guide rods 5 are fixedly connected to the four corners of the upper surface of the lower die base 1. The axial cross-sections of the four groups of guide rods 5 are all in a T shape structure, and the sizes of the guide rods 5 and the guide holes are adapted to each other.

[0027] In this embodiment, as Figure 1 and Figure 4 , the structural setting of the guide rods 5 can not only assist in enhancing the stability when the upper die base 6 and the lower die base 1 are clamped, but also reduce the probability of the upper die base 6 accidentally disengaging from the guide rods 5.

[0028] As a preferred embodiment, a plurality of fixing grooves are respectively formed on both ends of the upper surface of the upper die base 6 at equal intervals in parallel. The plurality of fixing grooves are all in a long strip shape structure, and the adjacent fixing grooves at both ends of the upper die base 6 are distributed in a staggered manner. At the same time, the upper end of the injection port formed on the upper die base 6 is in a frustum shape structure.

[0029] In this embodiment, as Figure 1 , Figure 3 and Figure 4 , the fixing grooves distributed in a staggered manner on the upper surface of the upper die base 6 can assist in enhancing the contact effect between the heat dissipation fins 9 and the flowing air, thereby improving the heat dissipation efficiency of the upper die base 6 and the heat dissipation fins 9. And the structural setting of the injection port can assist in the injection of the injection raw material.

[0030] As a preferred embodiment, the heat dissipation fins 9 are in a rectangular shape structure. The size of the lower end of the heat dissipation fins 9 is adapted to the size of the fixing grooves, and a plurality of through holes are formed on the upper end of the heat dissipation fins 9 at equal intervals in parallel along the length direction. The through holes are in a circular shape structure.

[0031] In this embodiment, as Figure 1 and Figure 4 , the size of the lower end of the heat dissipation fins 9 is adapted to the size of the fixing grooves, thereby enhancing the stability of the connection between the upper die base 6 and the heat dissipation fins 9. And the through holes formed on the surface of the heat dissipation fins 9 can effectively increase the actual area of the heat dissipation fins 9, thereby assisting in improving the heat dissipation effect of the heat dissipation fins 9.

[0032] The refrigerator insulation board injection mold of the utility model cooperates with the end cooling groove 4, the side cooling groove 15, the lower cooling groove 2, the heat dissipation fins 9 and the fan 8, so that the injection mold can achieve comprehensive cooling of the injection molded product through the dual cooling structure of liquid cooling and air cooling, thereby improving the production efficiency of the injection mold.

Claims

1. A refrigerator insulation board injection mold, comprising: The lower die base (1) and the upper die base (6), the outer side surface of the lower die base (1) is fixedly connected with a servo electric cylinder (16), the telescopic rod of the servo electric cylinder (16) is fixedly connected with the upper die base (6), and it is characterized in that: an injection cavity (11) is opened on the upper surface of the lower die base (1), end cooling grooves (4) are symmetrically opened at both ends of the lower die base (1), and the end cooling grooves (4) at both ends of the lower die base (1) are respectively communicated with a liquid inlet pipe (3) and a liquid outlet pipe (14), and side cooling grooves (15) are symmetrically opened on both sides of the lower die base (1), lower cooling grooves (2) are symmetrically opened at the lower end of the lower die base (1), and both ends of the side cooling grooves (15) and the lower cooling grooves (2) are respectively communicated with the end cooling grooves (4), and at the same time, a cylinder (13) is fixedly connected to the bottom of the injection cavity (11) through a groove, a multi-stage telescopic rod of the cylinder (13) is fixedly connected with a top plate (12), the top plate (12) is slidably connected in the injection cavity (11), and guide rods (5) are symmetrically connected to the upper surface of the lower die base (1), the upper die base (6) is slidably connected with the guide rods (5) through guide holes, and a fan (8) is fixedly connected to the end surface of the upper die base (6) through a mounting plate (7), and a feeding pipe (10) is fixedly connected to the middle of the upper surface of the upper die base (6) through an injection port, and heat dissipation fins (9) are symmetrically connected to both ends of the upper surface of the upper die base (6) respectively.

2. The refrigerator heat insulation board injection mold according to claim 1, characterized in that: The two groups of end cooling grooves (4) opened at both ends of the lower die base (1) are both rectangular structures, and the length of the end cooling grooves (4) is greater than the length of the corresponding side of the injection cavity (11), and at the same time, the sizes of the injection cavity (11) opened on the lower die base (1) and the top plate (12) are adapted to each other.

3. The refrigerator heat insulation board injection mold according to claim 1, characterized in that: A plurality of groups of side cooling grooves (15) are respectively opened on both sides of the lower die base (1) in parallel and at equal intervals. The side cooling grooves (15) are cylindrical structures, and the end cooling grooves (4) and the side cooling grooves (15) together form a square-shaped structure, and at the same time, the length of the side cooling grooves (15) is greater than the length of the corresponding side of the injection cavity (11).

4. The refrigerator insulation board injection mold according to claim 1, characterized in that: A plurality of groups of lower cooling grooves (2) are respectively opened on both sides of the lower end of the lower die base (1) in parallel and at equal intervals. The lower cooling grooves (2) are [shaped structures, and the cross-section formed by the combination of the end cooling grooves (4) and the lower cooling grooves (2) is a U-shaped structure.

5. The refrigerator heat insulation board injection mold according to claim 1, characterized in that: Four groups of guide rods (5) are fixedly connected to the four corners of the upper surface of the lower die base (1). The axial cross-sections of the four groups of guide rods (5) are all T-shaped structures, and the sizes of the guide rods (5) and the guide holes are adapted to each other.

6. The refrigerator heat insulation board injection mold according to claim 1, characterized in that: A plurality of groups of fixing grooves are respectively opened on both ends of the upper surface of the upper die base (6) in parallel and at equal intervals. The plurality of groups of fixing grooves are all strip-shaped structures, and the adjacent fixing grooves at both ends of the upper die base (6) are distributed in a staggered manner, and at the same time, the upper end of the injection port opened on the upper die base (6) is a frustum-shaped structure.

7. The refrigerator heat insulation board injection mold according to claim 1, characterized in that: The heat dissipation fins (9) are rectangular structures. The size of the lower end of the heat dissipation fins (9) is adapted to the size of the fixing grooves, and a plurality of groups of through holes are opened on the upper end of the heat dissipation fins (9) in parallel and at equal intervals along the length direction. The through holes are circular structures.

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