A plastic molding die with uniform heat dissipation structure

Abstract

The invention relates to a plastic molding mold with a uniform heat dissipation structure applied to the mold heat dissipation field. When a rotating motor drives a support rod to rotate forward 360 degrees, two outer cold plates contact the mold to cool it. When the rotating motor drives the support rod to reverse 360 ​​degrees, two inner cold plates contact the mold to cool it. By repeating the above operation, the inner cold plates and the outer cold plates can alternately cool the mold. During the cooling process, the inner cold plates and the outer cold plates do not contact the mold. Therefore, after being cooled by an air cooling mechanism, the surface temperatures of the inner cold plates and the outer cold plates are relatively uniform. Therefore, during the cooling process of the mold, a method of simultaneous overall bonding is used, so that different parts of the mold can be cooled at the same time, so that the temperatures of different parts of the mold are kept the same, thereby improving the cooling and molding quality of the plastic in the mold.

Description

Technical Field

[0001] The invention relates to a plastic molding mold with a uniform heat dissipation structure, in particular to a plastic molding mold with a uniform heat dissipation structure applied to the mold heat dissipation field. Background Art

[0002] The plastic blow molding process is to place a preheated plastic blank into a mold and then extrude the plastic blank into shape using air pressure. It is usually used to make hollow plastic products such as bottles, containers, etc.

[0003] A Chinese patent with publication number CN109501213A discloses an efficient heat dissipation blow molding mold, in which a cooling structure is arranged inside the mold, and the cooling structure takes away the heat inside the mold through the flow of water, thereby achieving the purpose of heat dissipation of the mold; a Chinese patent with publication number CN110667082B discloses an environmentally friendly heat dissipation blow molding mold, in which a first heat dissipation side frame and a first heat dissipation side frame are installed on the outer side of the mold for heat transfer and heat dissipation, and a first heat dissipation pipe and a second heat dissipation pipe are installed in the first heat dissipation side frame and the second heat dissipation side frame to realize liquid cooling to increase the cooling rate.

[0004] In the above invention applications, coolant is used to remove the heat from the mold. When the coolant flows inside the mold, the temperature will gradually increase, so the heat dissipation effect will gradually decrease, resulting in temperature differences in different parts of the mold, which in turn affects the molding effect of the plastic, so further improvement is needed. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that when the coolant flows inside the mold, the temperature will gradually increase, so the heat dissipation effect will gradually decrease, resulting in temperature differences in different parts of the mold.

[0006] To solve the above problems, the present invention provides a plastic molding mold with a uniform heat dissipation structure, including an outer frame, a mold is installed on the inner side of the outer frame, and cooling mechanisms are arranged on both sides of the mold, the cooling mechanism includes a base plate, the base plate is slidably connected to the outer frame, a bonding cold plate is arranged on one side of the base plate, connecting columns are fixedly connected at four corners of the base plate, the connecting columns penetrate the bonding cold plate and are slidably connected thereto, one end of the bonding cold plate is fixedly connected to a tooth plate, four top springs are fixedly connected between the base plate and the bonding cold plate, and the four top springs are respectively sleeved on the outsides of the four connecting columns, the bonding cold plate consists of an inner cold plate and an outer cold plate, the inner cold plates and the outer cold plates on the two cooling mechanisms are alternately arranged, one end of the outer frame is fixedly connected to a rotating motor, the output end of the rotating motor is fixedly connected to a support rod, the support rod is located on one side of the tooth plate, the mold is located on one side of the bonding cold plate, and the outer frame is fixedly connected to air cooling mechanisms on both sides of the mold.

[0007] As a further improvement of the present application, one end of the support rod is rotatably connected to a clamping column matching the tooth plate. Through the above arrangement, when the support rod rotates, the clamping column is clamped into the inner side of the tooth plate and rotates, which can better drive the cooling mechanism to move.

[0008] As a further improvement of the present application, the air cooling mechanism includes a bellows, an inner wall of which is fixedly connected to a partition, and the bellows is provided with blowing holes on both sides of the partition.

[0009] As a further improvement of the present application, two connecting pipes are fixedly connected to the bottom end of the bellows, and the two connecting pipes are respectively located on both sides of the partition. A distribution box is provided on the lower side of the bellows, and the bottom ends of the connecting pipes are fixedly connected to the distribution box. The side wall of the distribution box is fixedly connected with an air inlet pipe.

[0010] As another improvement of the present application, a rotating shaft is rotatably connected to the middle of the bottom end of the distribution box, and a leak-proof plate is fixedly connected to the top end of the rotating shaft.

[0011] As another improvement supplement of the present application, the bottom end of the rotating shaft and the output end of the rotating motor are fixedly connected with pulleys, and adjacent pulleys are rotatably connected by belts. Through the above arrangement, the blowing direction of the air cooling mechanism can be switched to blow toward the corresponding inner cooling plate and outer cooling plate, thereby avoiding waste of wind energy.

[0012] As another improvement supplement of the present application, a heat insulation layer is provided between the inner cold plate and the outer cold plate. Through the above arrangement, the temperature transfer between the inner cold plate and the outer cold plate is avoided, and the temperature stability is further improved.

[0013] As another improvement of the present application, the mold consists of a left mold and a right mold, and two electric push rods are fixedly connected to the bottom end of the outer frame near the left mold and the right mold, and the telescopic ends of the two electric push rods are respectively fixedly connected to the bottom ends of the left mold and the right mold. Through the above arrangement, the electric push rods can drive the left mold and the right mold to close and separate.

[0014] To sum up, when the rotating motor drives the support rod to rotate forward 360 degrees, the two outer cold plates are in contact with the mold to cool it down. When the rotating motor drives the support rod to reverse 360 ​​degrees, the two inner cold plates are in contact with the mold to cool it down. By repeating the above operations, the inner cold plates and the outer cold plates can cool the mold alternately. During the cooling process, the inner cold plates and the outer cold plates do not contact the mold. Therefore, after being cooled by the air cooling mechanism, the surface temperature of the inner cold plates and the outer cold plates is relatively uniform. Therefore, in the process of cooling the mold, the method of overall simultaneous bonding is used, so that different parts of the mold can be cooled at the same time, so that the temperatures of different parts of the mold remain the same, thereby improving the cooling and molding quality of the plastic in the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A first-view stereoscopic image of the outer frame in the first embodiment of the present application;

[0016] Figure 2 A second perspective stereoscopic image of the outer frame in the first embodiment of the present application;

[0017] Figure 3 It is a three-dimensional structure diagram of the cooling mechanism in the first and second embodiments of the present application;

[0018] Figure 4 A top view of the cooling mechanism in the first and second embodiments of the present application;

[0019] Figure 5 This is an internal structure diagram of the bellows in the second embodiment of the present application;

[0020] Figure 6 This is a connection structure diagram of multiple pulleys in the second embodiment of the present application;

[0021] Figure 7 This is a three-dimensional structural diagram of the mold in the second embodiment of the present application.

[0022] Description of the numbers in the figure:

[0023] 1. Outer frame; 2. Mold; 201. Left mold clamping; 202. Right mold clamping; 3. Electric push rod; 4. Cooling mechanism; 401. Base plate; 402. Laminating cold plate; 4021. External cold plate; 4022. Internal cold plate; 403. Connecting column; 404. Top spring; 5. Rotating motor; 6. Supporting rod; 601. Clamping column; 7. Air cooling mechanism; 701. Bellows; 702. Partition; 703. Blowing hole; 704. Connecting pipe; 705. Distribution box; 706. Rotating shaft; 707. Leakage plugging plate; 708. Pulley; 8. Tooth plate. DETAILED DESCRIPTION

[0024] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0025] The first implementation method:

[0026] Figure 1-4A plastic molding mold with a uniform heat dissipation structure is shown, including an outer frame 1, a mold 2 is installed on the inner side of the outer frame 1, cooling mechanisms 4 are arranged on both sides of the mold 2, the cooling mechanism 4 includes a base plate 401, the base plate 401 is slidably connected to the outer frame 1, a bonding cold plate 402 is arranged on one side of the base plate 401, connecting columns 403 are fixedly connected at the four corners of the base plate 401, the connecting columns 403 penetrate the bonding cold plate 402 and are slidably connected thereto, a tooth plate 8 is fixedly connected to one end of the bonding cold plate 402, and the base plate 401 and the bonding cold plate 402 are connected to each other. Four top springs 404 are fixedly connected between the outer and inner ends of the four connecting columns 403, and the four top springs 404 are respectively sleeved on the outside of the four connecting columns 403. The laminating cold plate 402 is composed of an inner cold plate 4022 and an outer cold plate 4021. The inner cold plates 4022 and the outer cold plates 4021 on the two cooling mechanisms 4 are alternately arranged. A rotating motor 5 is fixedly connected to one end of the outer frame 1, and a support rod 6 is fixedly connected to the output end of the rotating motor 5. The support rod 6 is located on one side of the tooth plate 8. The mold 2 is located on one side of the laminating cold plate 402. The outer frame 1 is located on both sides of the mold 2 and is fixedly connected with air cooling mechanisms 7.

[0027] When the rotating motor 5 drives the support rod 6 to rotate forward 360 degrees, the support rod 6 contacts the tooth plate 8 to move the two cooling mechanisms 4 away from each other and in opposite directions. At this time, the two outer cold plates 4021 contact the mold 2 to cool it, and the two inner cold plates 4022 move to one side of the two air cooling mechanisms 7 for cooling. Similarly, when the rotating motor 5 drives the support rod 6 to reverse 360 ​​degrees, the two inner cold plates 4022 contact the mold 2 to cool it, and the two outer cold plates 4021 move to one side of the two air cooling mechanisms 7 for cooling. By repeating the above operations, the inner cold plates 4022 and the outer cold plates 4021 can alternately cool the mold 2.

[0028] The inner cold plate 4022 and the outer cold plate 4021 do not contact the mold during the cooling process. Therefore, after being cooled by the air cooling mechanism 7, the surface temperatures of the inner cold plate 4022 and the outer cold plate 4021 are relatively uniform. Therefore, in the process of cooling the mold 2, the overall simultaneous bonding method is used to enable different parts of the mold 2 to be cooled at the same time, so that the temperatures of different parts of the mold 2 remain the same, thereby improving the cooling and molding quality of the plastic in the mold 2.

[0029] The second implementation method:

[0030] Figure 3-7 A plastic molding mold with a uniform heat dissipation structure is shown. Different from the first embodiment, one end of the support rod 6 is rotatably connected to a clamping column 601 matching the tooth plate 8. Through the above arrangement, when the support rod 6 rotates, the clamping column 601 is clamped into the inner side of the tooth plate 8 and the clamping column 601 rotates, which can better drive the cooling mechanism 4 to move.

[0031] The air cooling mechanism 7 includes a bellows 701, the inner wall of which is fixedly connected to a partition 702, and the bellows 701 is provided with blowing holes 703 on both sides of the partition 702, and the bottom end of the bellows 701 is fixedly connected to two connecting pipes 704, and the two connecting pipes 704 are respectively located on both sides of the partition 702, and a distribution box 705 is arranged on the lower side of the bellows 701, and the bottom end of the connecting pipe 704 is fixedly connected to the distribution box 705, and the side wall of the distribution box 705 is fixedly connected to an air inlet pipe, and the middle part of the bottom end of the distribution box 705 is rotatably connected to a rotating shaft 706, and the top end of the rotating shaft 706 is fixedly connected to a leak-proof plate 707, and the bottom end of the rotating shaft 706 and the output end of the rotating motor 5 are fixedly connected to pulleys 708, and adjacent pulleys 708 are rotatably connected by belts.

[0032] Since the inner cooling plate 4022 and the outer cooling plate 4021 are moved alternately for cooling, the air cooling mechanism 7 needs to switch the blowing direction as the cooling mechanism 4 moves when blowing air. Through the above arrangement, when the rotating motor 5 rotates forward, one of the connecting pipes 704 is blocked by the belt and the rotating shaft 706. At this time, the blowing holes 703 on one side blow air outward. When the rotating motor 5 reverses, the blowing holes 703 on the other side blow air outward. The blowing direction of the air cooling mechanism 7 can be switched to blow toward the corresponding inner cooling plate 4022 and outer cooling plate 4021, thereby avoiding waste of wind energy.

[0033] A heat insulation layer is provided between the inner cold plate 4022 and the outer cold plate 4021. Through the above arrangement, the temperature transfer between the inner cold plate 4022 and the outer cold plate 4021 is avoided, and the temperature stability is further improved.

[0034] The mold 2 consists of a left mold 201 and a right mold 202. The outer frame 1 is fixedly connected to two electric push rods 3 near the bottom of the left mold 201 and the right mold 202. The telescopic ends of the two electric push rods 3 are fixedly connected to the bottom ends of the left mold 201 and the right mold 202 respectively. Through the above arrangement, the electric push rods 3 can drive the left mold 201 and the right mold 202 to close and separate.

[0035] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A plastic molding mold with a uniform heat dissipation structure, comprising an outer frame (1), Features: A mold (2) is installed on the inner side of the outer frame (1), and cooling mechanisms (4) are arranged on both sides of the mold (2). The cooling mechanism (4) comprises a base plate (401), and the base plate (401) is slidably connected to the outer frame (1). A bonding cold plate (402) is arranged on one side of the base plate (401), and connecting columns (403) are fixedly connected at four corners of the base plate (401), and the connecting columns (403) penetrate the bonding cold plate (402) and are slidably connected thereto. A tooth plate (8) is fixedly connected to one end of the bonding cold plate (402), and four top springs (403) are fixedly connected between the base plate (401) and the bonding cold plate (402). 4), and four top springs (404) are respectively sleeved on the outside of four connecting columns (403), the laminating cold plate (402) is composed of an inner cold plate (4022) and an outer cold plate (4021), the inner cold plates (4022) and the outer cold plates (4021) on the two cooling mechanisms (4) are arranged alternately, one end of the outer frame (1) is fixedly connected to a rotating motor (5), the output end of the rotating motor (5) is fixedly connected to a support rod (6), the support rod (6) is located on one side of the tooth plate (8), the mold (2) is located on one side of the laminating cold plate (402), and both sides of the outer frame (1) located on the mold (2) are fixedly connected to air cooling mechanisms (7); The air cooling mechanism (7) comprises a wind box (701), the inner wall of the wind box (701) is fixedly connected to a partition (702), the wind box (701) is provided with air blowing holes (703) on both sides of the partition (702), the bottom end of the wind box (701) is fixedly connected to two connecting pipes (704), the two connecting pipes (704) are respectively located on both sides of the partition (702), a distribution box (705) is arranged at the lower side of the wind box (701), and the connecting pipes (704) are provided at the lower side of the wind box (701). The bottom end of (704) is fixedly connected to the distribution box (705), the side wall of the distribution box (705) is fixedly connected to an air inlet pipe, the middle part of the bottom end of the distribution box (705) is rotatably connected to a rotating shaft (706), the top end of the rotating shaft (706) is fixedly connected to a leak-proof plate (707), the bottom end of the rotating shaft (706) and the output end of the rotating motor (5) are both fixedly connected to pulleys (708), and adjacent pulleys (708) are rotatably connected via belts.

2. A plastic molding mold with a uniform heat dissipation structure according to claim 1, Features: One end of the support rod (6) is rotatably connected to a clamping column (601) that matches the toothed plate (8).

3. A plastic molding mold with a uniform heat dissipation structure according to claim 1, Features: A heat insulation layer is provided between the inner cold plate (4022) and the outer cold plate (4021).

4. A plastic molding mold with a uniform heat dissipation structure according to claim 1, Features: The mould (2) is composed of a left clamping mould (201) and a right clamping mould (202); the outer frame (1) is fixedly connected to two electric push rods (3) near the bottom ends of the left clamping mould (201) and the right clamping mould (202); the telescopic ends of the two electric push rods (3) are respectively fixedly connected to the bottom ends of the left clamping mould (201) and the right clamping mould (202).

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