Temperature control injection mold

Abstract

The utility model relates to the technical field of injection molds, and discloses a temperature control injection mold which comprises a bottom plate, a platform plate is arranged at the top of the bottom plate, a supporting plate is fixedly connected between the bottom plate and the platform plate, a female mold is fixedly connected to the top of the platform plate, and a temperature control mechanism is arranged at the top of the bottom plate. Through the design of the temperature control mechanism, cooling water is contained in the circulation frame, cold water is contained in the cold water frame, when the female die needs to be cooled, the cooling purpose can be achieved in the mode that water in the circulation frame is pumped into the cooling groove to flow circularly, and if the cooling speed needs to be increased, the water in the circulation frame can be discharged into the receiving frame below to be cooled; and the same amount of cold water is downwards discharged into the circulation frame from the cold water frame, so that the cold water is injected into the high-temperature water in the circulation frame for blending after circulation, the temperature of the circulation water is lower, the cooling strength can be accelerated, and the purpose of temperature control is achieved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a temperature-controlled injection mold. Background Technology

[0002] Injection molds are tools used to produce plastic products. They consist of two parts: a moving mold and a fixed mold. During the actual processing, the moving mold and the fixed mold close to form a gating system and a cavity. After the injection molding material is injected and formed, the moving mold and the fixed mold are separated and the injection molded product is removed, thus completing the processing steps.

[0003] Patent publication number CN221271869U discloses a temperature-controlled injection mold, including a lower mold, a support plate fixed on one side of the lower mold, a connecting plate fixed on the other side of the lower mold, and brackets on both sides of the lower mold. A first hydraulic cylinder is fixed inside each of the two brackets; the piston rod of one first hydraulic cylinder is connected to the support plate, and the piston rod of the other first hydraulic cylinder is connected to the connecting plate. A constant-temperature water tank is provided between the two brackets. An upper mold and a top plate are provided above the lower mold. A second hydraulic cylinder is fixed to the top of the top plate, and the bottom end of the piston rod of the second hydraulic cylinder is connected to the upper mold. A water pump is provided on one side of the connecting plate. A first flexible hose is fixed to the inlet pipe of the water pump, and a second flexible hose is fixed to the outlet pipe of the water pump. By placing the lower mold in the constant-temperature water tank, the water pump, the first flexible hose, and the second flexible hose facilitate the introduction of external cold water into the constant-temperature water tank, thereby controlling the temperature of the lower mold and the product inside the lower mold.

[0004] The above-mentioned devices, in order to control the temperature of the mold, place the lower mold in a water tank and achieve the purpose of rapid cooling of the injection molded parts by controlling the temperature of the water in the tank. However, firstly, although it is placed in a water tank, the water in the tank can only come into contact with the outside of the mold. Due to the thickness limitation of the mold, it is difficult for the water to cool the inside of the mold. Secondly, placing the mold directly in the water tank is also not conducive to the injection molding process. In particular, when removing the injection molded parts, there is a possibility that the injection molded parts may fall into the water tank due to careless operation. Therefore, a temperature-controlled injection mold is proposed to solve the above problems. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a temperature-controlled injection mold.

[0006] The temperature-controlled injection mold provided by this utility model adopts the following technical solution:

[0007] A temperature-controlled injection mold includes a base plate, a platform plate on the top of the base plate, a support plate fixedly connected between the base plate and the platform plate, a cavity mold fixedly connected to the top of the platform plate, and a temperature control mechanism on the top of the base plate.

[0008] The temperature control mechanism includes a receiving frame, a circulation frame, and a cold water frame. The receiving frame is fixedly connected to the top of the base plate, the circulation frame is fixedly connected to the top of the receiving frame, and the cold water frame is fixedly connected to the top of the circulation frame. A cooling groove is formed inside the cavity mold, and a temperature sensor is fixedly connected inside the cooling groove. A first pipe is fixedly connected to one side wall of the circulation frame, and a first water pump is fixedly connected to the top of the base plate. A second pipe is fixedly connected to the input end of the first water pump, and one end of the second pipe is fixedly connected to one side wall of the circulation frame. A cooling pipe is fixedly connected to the output end of the first water pump. Both the first pipe and the cooling pipe extend into the cavity mold and are fixedly connected to it. A first drain pipe is fixedly connected to the bottom of the cold water frame, and a second drain pipe is fixedly connected to the bottom of the circulation frame. Solenoid valves are installed on both the first and second drain pipes.

[0009] By adopting the above technical solution, the circulating frame is filled with cooling water, and the cold water frame is filled with cold water. When it is necessary to cool the die, the water in the circulating frame can be drawn into the cooling tank for circulation to achieve the purpose of cooling. If it is necessary to speed up the cooling speed, the water in the circulating frame can be discharged into the receiving frame below for cooling, and an equal amount of cold water can be discharged from the cold water frame downward into the circulating frame. This injects cold water into the water in the circulating frame that has a high temperature after circulation to make it cooler, thereby accelerating the cooling effect and achieving the purpose of temperature control.

[0010] Preferably, one end of the cooling pipe and the first pipe body are respectively connected to both sides of the cooling tank, and a nozzle is fixedly connected to the bottom of the second drain pipe.

[0011] By adopting the above technical solution, the water flow can be subdivided by spraying water downwards through the nozzle, which is conducive to the rapid loss of heat from the water.

[0012] Preferably, the bottom of the platform plate has a through groove, through which both the first pipe and the cooling pipe pass.

[0013] By adopting the above technical solution, the through groove is used for the interlocking and erection of the first pipe body and the cooling pipe.

[0014] Preferably, a second water pump is fixedly connected to the top of the base plate, a third pipe is fixedly connected to the input end of the second water pump, one end of the third pipe is fixedly connected to a side wall of the receiving frame, a fourth pipe is fixedly connected to the output end of the second water pump, the fourth pipe extends to the top of the cold water frame, a first stabilizing plate is fixedly connected to one side of the cold water frame, the fourth pipe passes through the first stabilizing plate and is fixedly connected to the first stabilizing plate, a second stabilizing plate is fixedly connected to one side of the circulation frame, and the cooling pipe passes through the second stabilizing plate and is fixedly connected to the second stabilizing plate.

[0015] By adopting the above technical solution, the first stabilizing plate and the second stabilizing plate provide support for the fourth tube and the cooling tube, respectively.

[0016] Preferably, a box is provided on the top of the base plate, the box is located behind the circulation frame, a fan is fixedly connected inside the box, a dustproof net is fixedly connected to the rear side of the box, three guide pipes are fixedly connected to the front side of the box, the three guide pipes extend to the top of the receiving frame, the circulation frame and the cold water frame respectively, and a bracket is fixedly connected to the bottom of the box, the bracket is fixedly connected to the top of the base plate.

[0017] By adopting the above technical solution, the dustproof net can prevent the fan from sucking in external impurities and causing moisture pollution when it is working.

[0018] Preferably, a frame plate is fixedly connected to the top of the platform plate, a punch is provided on the inner side of the frame plate, the punch is located on the top of the die, a control mechanism is provided on the frame plate, the control mechanism includes a bidirectional threaded rod, the bidirectional threaded rod is rotatably connected to the inner side of the frame plate, the bidirectional threaded rod extends out of the frame plate, two movable blocks are slidably connected to the inner side of the frame plate, the bidirectional threaded rod passes through the two movable blocks in sequence and is threadedly connected to the two movable blocks respectively, a positioning plate is fixedly connected to the movable block, positioning grooves are opened on both sides of the die, and the positioning plate extends into the positioning groove and matches the positioning groove.

[0019] By adopting the above technical solution, the threads at both ends of the bidirectional threaded rod are opposite in direction, which can drive the two moving blocks to move towards or away from each other.

[0020] Preferably, a guide rod is fixedly connected to the top of the punch, the guide rod passes through the top wall of the frame plate, and a cylinder is fixedly connected to the top wall of the frame plate, with one end of the cylinder fixedly connected to the top of the punch.

[0021] By adopting the above technical solution, the guide rod can vertically limit the punch, so that it can maintain stable vertical lifting and lowering.

[0022] In summary, this utility model has the following beneficial technical effects:

[0023] 1. A temperature-controlled injection mold, wherein the temperature control mechanism is designed such that the circulating frame contains cooling water and the cold water frame contains cold water. When it is necessary to cool the cavity mold, the water in the circulating frame can be drawn into the cooling tank for circulation to achieve the purpose of cooling. If it is necessary to accelerate the cooling speed, the water in the circulating frame can be discharged into the receiving frame below for cooling, and an equal amount of cold water can be discharged from the cold water frame downward into the circulating frame. This injects cold water into the water in the circulating frame that has a high temperature after circulation to neutralize it, so as to make the temperature of the circulating water even lower, thereby accelerating the cooling effect and achieving the purpose of temperature control.

[0024] 2. A temperature-controlled injection mold, wherein water in the circulation frame enters the receiving frame and is cooled in the receiving frame, and after sufficient cooling, the cooled water in the receiving frame can be drawn into the cold water frame by a second water pump for use in the next cold water injection, thereby ensuring the purpose of temperature control and regulation while making full use of water and effectively saving water resources. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0028] Figure 4 This is a cross-sectional view of the concave die in this utility model;

[0029] Figure 5 This is a cross-sectional view of the middle frame plate of this utility model;

[0030] Figure 6 This is a cross-sectional view of the box body in this utility model.

[0031] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Platform plate; 3. Support plate; 4. Die; 5. Temperature control mechanism; 51. Receiving frame; 52. Circulation frame; 53. Cold water frame; 54. Cooling tank; 55. Temperature sensor; 56. First pipe body; 57. First water pump; 58. Second pipe body; 59. Second water pump; 591. Cooling pipe; 592. First drain pipe; 593. Second drain pipe; 594. Solenoid valve; 595. Nozzle; 596. Third pipe body; 597. Fourth pipe body; 598. Box body; 599. Fan; 581. Dustproof net; 582. Guide pipe; 6. Frame plate; 7. Control mechanism; 71. Two-way threaded rod; 72. Movable block; 73. Positioning plate; 74. Positioning groove; 75. Guide rod; 76. Cylinder; 8. Punch. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 The present invention will be described in further detail below.

[0033] This utility model discloses a temperature-controlled injection mold. (Refer to...) Figures 1-6The system includes a base plate 1, a platform plate 2 on top of the base plate 1, a support plate 3 fixedly connected between the base plate 1 and the platform plate 2, a die 4 fixedly connected to the top of the platform plate 2, a temperature control mechanism 5 on top of the base plate 1, the temperature control mechanism 5 including a receiving frame 51, a circulation frame 52 and a cold water frame 53, the receiving frame 51 fixedly connected to the top of the base plate 1, the circulation frame 52 fixedly connected to the top of the receiving frame 51, the cold water frame 53 fixedly connected to the top of the circulation frame 52, a cooling groove 54 is opened inside the die 4, a temperature sensor 55 is fixedly connected inside the cooling groove 54, a first pipe 56 is fixedly connected to one side wall of the circulation frame 52, a first water pump 57 is fixedly connected to the top of the base plate 1, a second pipe 58 is fixedly connected to the input end of the first water pump 57, one end of the second pipe 58 is fixedly connected to one side wall of the circulation frame 52, and a cooling pipe 591 is fixedly connected to the output end of the first water pump 57.

[0034] Both the first pipe 56 and the cooling pipe 591 extend into the cavity mold 4 and are fixedly connected to the cavity mold 4. The bottom of the cold water frame 53 is fixedly connected to the first drain pipe 592, and the bottom of the circulation frame 52 is fixedly connected to the second drain pipe 593. Solenoid valves 594 are installed on both the first drain pipe 592 and the second drain pipe 593. The circulation frame 52 is filled with cooling water, and the cold water frame 53 is filled with cold water. When it is necessary to cool the cavity mold 4, the water in the circulation frame 52 can be drawn into the cooling tank 54 for circulation to achieve the purpose of cooling. If it is necessary to speed up the cooling speed, the water in the circulation frame 52 can be discharged into the receiving frame 51 below for cooling, and an equal amount of cold water can be discharged from the cold water frame 53 into the circulation frame 52. In this way, cold water is injected into the water in the circulation frame 52 that has a high temperature after circulation to adjust it, so that the temperature of the circulating water is lower, thereby accelerating the cooling effect and achieving the purpose of temperature control.

[0035] Cooling pipe 591 and one end of the first pipe 56 are respectively connected to both sides of the cooling tank 54. A nozzle 595 is fixedly connected to the bottom of the second drain pipe 593, spraying water downwards through the nozzle 595. This allows for the finer division of the water flow, facilitating rapid heat loss from the water. A through-slot is provided at the bottom of the platform plate 2, through which both the first pipe 56 and the cooling pipe 591 pass. The through-slot allows the first pipe 56 and the cooling pipe 591 to interlock. A second water pump 59 is fixedly connected to the top of the base plate 1, and a third pipe 596 is fixedly connected to the input end of the second water pump 59. One end of the pipe body 596 is fixedly connected to one side wall of the receiving frame 51. The output end of the second water pump 59 is fixedly connected to the fourth pipe body 597. The fourth pipe body 597 extends to the top of the cold water frame 53. A first stabilizing plate is fixedly connected to one side of the cold water frame 53. The fourth pipe body 597 passes through the first stabilizing plate and is fixedly connected to the first stabilizing plate. A second stabilizing plate is fixedly connected to one side of the circulation frame 52. The cooling pipe 591 passes through the second stabilizing plate and is fixedly connected to the second stabilizing plate. The first stabilizing plate and the second stabilizing plate provide support for the fourth pipe body 597 and the cooling pipe 591, respectively.

[0036] A housing 598 is installed on the top of the base plate 1. The housing 598 is located behind the circulation frame 52. A fan 599 is fixedly connected inside the housing 598. A dustproof net 581 is fixedly connected to the rear side of the housing 598. Three guide pipes 582 are fixedly connected to the front side of the housing 598. The three guide pipes 582 extend to the top of the receiving frame 51, the circulation frame 52 and the cold water frame 53 respectively. A bracket is fixedly connected to the bottom of the housing 598. The bracket is fixedly connected to the top of the base plate 1. The dustproof net 581 can prevent the fan 599 from sucking in external impurities and causing moisture pollution when it is working.

[0037] A frame plate 6 is fixedly connected to the top of the platform plate 2. A punch 8 is provided on the inner side of the frame plate 6, and the punch 8 is located on the top of the die 4. A control mechanism 7 is provided on the frame plate 6. The control mechanism 7 includes a bidirectional threaded rod 71, which is rotatably connected to the inner side of the frame plate 6 and extends out of the frame plate 6. Two movable blocks 72 are slidably connected to the inner side of the frame plate 6. The bidirectional threaded rod 71 passes through the two movable blocks 72 in sequence and is threadedly connected to the two movable blocks 72 respectively. A positioning plate 7 is fixedly connected to the movable block 72. 3. Positioning grooves 74 are provided on both sides of the die 4. The positioning plate 73 extends into the positioning groove 74 and matches the positioning groove 74. The two ends of the bidirectional threaded rod 71 have opposite thread directions, which can drive the two movable blocks 72 to move towards each other or away from each other. The top of the punch 8 is fixedly connected to a guide rod 75, which passes through the top wall of the frame plate 6. A cylinder 76 is fixedly connected to the top wall of the frame plate 6. One end of the cylinder 76 is fixedly connected to the top of the punch 8. The guide rod 75 can vertically limit the punch 8, so that it can maintain stable vertical lifting and lowering.

[0038] In actual operation, when this device is used, first connect the device to the power supply, rotate the bidirectional threaded rod 71, the bidirectional threaded rod 71 drives the two movable blocks 72 to move, the movable blocks 72 drive the positioning plate 73 to move into the insertion positioning groove 74, which can improve the stability of the die 4 when it is working.

[0039] The circulation frame 52 is filled with cooling water, the cold water frame 53 is filled with cold water, and the temperature sensor 55 detects the temperature inside the cavity mold 4. When it is necessary to cool down the injection molded part inside the cavity mold 4, the first water pump 57 works and extracts water from the circulation frame 52. The extracted water passes through the cooling pipe 591, the cooling tank 54 and the first pipe 56 in sequence before returning to the circulation frame 52, thereby realizing the circulation of water. When the water enters the cooling tank 54, it carries away the heat inside the cavity mold 4 to achieve the purpose of cooling. In addition, when the water in circulation passes through the cooling pipe 591 and the first pipe, the long pipe line allows the water to lose heat during the flow process to ensure cooling efficiency.

[0040] If it is necessary to accelerate the cooling speed, the temperature will rise because the water in the circulation process absorbs the heat inside the cavity mold 4. Therefore, at this time, two solenoid valves 594 are opened at the same time. The cold water in the cold water frame 53 will flow into the circulation frame 52, and the water in the circulation frame 52 will enter the receiving frame 51 through the second drain pipe 593. This ensures that the water level in the circulation frame 52 remains unchanged. This operation can lower the overall temperature of the water in the circulation frame 52. The water with the lowered temperature can further accelerate the cooling of the cavity mold 4 during the circulation process, thereby achieving rapid temperature control.

[0041] After the water in the circulation frame 52 enters the receiving frame 51, it is cooled in the receiving frame 51. After sufficient cooling, since the water in the cold water frame 53 has not been replenished, the second water pump 59 can be used to draw the cooled water in the receiving frame 51 into the cold water frame 53 for use in the next cold water injection. This ensures the purpose of temperature control and regulation while making full use of water, effectively saving water resources. During the entire operation, the airflow generated by the fan 599 can be blown into the water inside the receiving frame 51, circulation frame 52 and cold water frame 53 through three guide pipes 582, thereby cooling the water inside the receiving frame 51, circulation frame 52 and cold water frame 53 to accelerate cooling and improve the cooling speed.

[0042] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A temperature-controlled injection mold, characterized by: Includes a base plate (1), a platform plate (2) is provided on the top of the base plate (1), a support plate (3) is fixedly connected between the base plate (1) and the platform plate (2), a concave mold (4) is fixedly connected to the top of the platform plate (2), and a temperature control mechanism (5) is provided on the top of the base plate (1); The temperature control mechanism (5) includes a receiving frame (51), a circulation frame (52), and a cold water frame (53). The receiving frame (51) is fixedly connected to the top of the base plate (1). The circulation frame (52) is fixedly connected to the top of the receiving frame (51). The cold water frame (53) is fixedly connected to the top of the circulation frame (52). A cooling groove (54) is provided inside the die (4). A temperature sensor (55) is fixedly connected inside the cooling groove (54). A first pipe (56) is fixedly connected to one side wall of the circulation frame (52). A first water pump (57) is fixedly connected to the top of the base plate (1). (57) The input end is fixedly connected to a second pipe body (58), one end of the second pipe body (58) is fixedly connected to a side wall of the circulation frame (52), the output end of the first water pump (57) is fixedly connected to a cooling pipe (591), the first pipe body (56) and the cooling pipe (591) both extend into the cavity mold (4) and are fixedly connected to the cavity mold (4), the bottom of the cold water frame (53) is fixedly connected to a first drain pipe (592), the bottom of the circulation frame (52) is fixedly connected to a second drain pipe (593), and a solenoid valve (594) is provided on the first drain pipe (592) and the second drain pipe (593).

2. A temperature-controlled injection mold according to claim 1, characterized in that: The cooling pipe (591) and the first pipe body (56) are respectively connected to both sides of the cooling tank (54), and the nozzle (595) is fixedly connected to the bottom of the second drain pipe (593).

3. A temperature controlled injection mold according to claim 1, wherein: The bottom of the platform plate (2) is provided with a through groove, through which the first tube (56) and the cooling tube (591) pass.

4. A temperature-controlled injection mold according to claim 1, wherein: A second water pump (59) is fixedly connected to the top of the base plate (1). A third pipe (596) is fixedly connected to the input end of the second water pump (59). One end of the third pipe (596) is fixedly connected to one side wall of the receiving frame (51). A fourth pipe (597) is fixedly connected to the output end of the second water pump (59). The fourth pipe (597) extends to the top of the cold water frame (53). A first stabilizing plate is fixedly connected to one side of the cold water frame (53). The fourth pipe (597) passes through the first stabilizing plate and is fixedly connected to the first stabilizing plate. A second stabilizing plate is fixedly connected to one side of the circulation frame (52). The cooling pipe (591) passes through the second stabilizing plate and is fixedly connected to the second stabilizing plate.

5. A temperature-controlled injection mold according to claim 1, wherein: The bottom plate (1) is provided with a box (598) on the top. The box (598) is located behind the circulation frame (52). A fan (599) is fixedly connected inside the box (598). A dustproof net (581) is fixedly connected to the rear side of the box (598). Three guide pipes (582) are fixedly connected to the front side of the box (598). The three guide pipes (582) extend to the top of the receiving frame (51), the circulation frame (52) and the cold water frame (53) respectively. A bracket is fixedly connected to the bottom of the box (598). The bracket is fixedly connected to the top of the bottom plate (1).

6. A temperature-controlled injection mold according to claim 1, wherein: A frame plate (6) is fixedly connected to the top of the platform plate (2). A punch (8) is provided on the inner side of the frame plate (6). The punch (8) is located on the top of the die (4). A control mechanism (7) is provided on the frame plate (6). The control mechanism (7) includes a bidirectional threaded rod (71). The bidirectional threaded rod (71) is rotatably connected to the inner side of the frame plate (6). The bidirectional threaded rod (71) extends out of the frame plate (6). Two movable blocks (72) are slidably connected to the inner side of the frame plate (6). The bidirectional threaded rod (71) passes through the two movable blocks (72) in sequence and is threadedly connected to the two movable blocks (72) respectively. A positioning plate (73) is fixedly connected to the movable block (72). Positioning grooves (74) are provided on both sides of the die (4). The positioning plate (73) extends into the positioning groove (74) and matches the positioning groove (74).

7. A temperature controlled injection mold according to claim 6, wherein: A guide rod (75) is fixedly connected to the top of the punch (8). The guide rod (75) passes through the top wall of the frame plate (6). A cylinder (76) is fixedly connected to the top wall of the frame plate (6). One end of the cylinder (76) is fixedly connected to the top of the punch (8).

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