Plastic mold cooling mechanism

Abstract

The utility model relates to the technical field of plastic molds, and discloses a plastic mold cooling mechanism which comprises a mold base, a lower mold is installed on the outer surface of the top of the mold base, a transmission shaft is rotationally connected to the outer surface of a vertical plate, a motor is fixedly installed on the outer surface of the right side of the vertical plate, and a half gear is fixedly arranged on the outer surface of the transmission shaft in a sleeved mode. And the outer surface of the rotating shaft is fixedly sleeved with a full gear, a coil spring is wound on the outer surface of the rotating shaft, the outer surface of the rotating shaft is fixedly connected with a cooling pipe, and the outer surface of the cooling pipe is fixedly communicated with a plurality of spray heads. Cooling water is pumped to the cooling pipe through the water pump and sprayed out through the spray head, the motor, the half gear, the full gear and the coil spring are matched, the spray head is driven to rotate within a certain range in the working process of the motor, and therefore the cooling water is evenly sprayed to the surface of the lower die, and the lower die is cooled in the mode that water cooling and direct contact with the lower die are adopted; and the cooling effect on the lower die is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a cooling mechanism for plastic molds. Background Technique

[0002] A plastic mold is a short name for a combined mold used for compression molding, extrusion molding, injection molding, blow molding, and low-foaming molding. The coordinated changes of the convex and concave molds and the auxiliary molding system of the mold can process a series of plastic parts with different shapes and sizes. Plastic molds are the mother of industry, and the release of new products involves plastics. It mainly includes a concave mold with a variable cavity composed of a concave mold combination base plate, concave mold components, and a concave mold combination clamping plate, and a convex mold with a variable core composed of a convex mold combination base plate, convex mold components, a convex mold combination clamping plate, a cavity truncation component, and a side truncation combination plate.

[0003] After the plastic mold is formed, a cooling mechanism is required for cooling. However, the existing cooling mechanism usually pumps the circulating cooling water in the water tank into the cooling pipes inside the cooling plate structure through a pump body, and then uses the cooling pipes inside the cooling plate structure to contact the plastic mold for cooling. However, in this way, the heat absorption effect of the cooling pipes on the lower mold is not good, resulting in low cooling efficiency of the cooling mechanism and long cooling time. Therefore, a cooling mechanism for plastic molds is proposed. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a cooling mechanism for plastic molds to solve the problems mentioned in the above background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: A cooling mechanism for plastic molds, including a mold base, the outer surface of the top of the mold base is provided with a lower mold, a molding cavity is arranged inside the lower mold, vertical plates are fixedly connected to the outer surface of the top of the mold base around the lower mold, rotating shafts penetrate through the outer surfaces of the four vertical plates, a vertical plate is fixedly connected to the outer surface of the top of the mold base at the rear side, a transmission shaft is rotatably connected to the outer surface of the vertical plate, a motor is fixedly installed on the outer surface of the right side of the vertical plate, the output end of the motor is fixedly connected to the transmission shaft, a semi-gear is fixedly sleeved on the outer surface of the transmission shaft, a full-gear is fixedly sleeved on the outer surface of the rotating shaft, the outer surfaces of the semi-gear and the full-gear are movably engaged, a connecting plate is fixedly connected to the outer surface of the vertical plate, a torsion spring is wound around the outer surface of the rotating shaft, the other end of the torsion spring is fixedly connected to the outer surface of the top of the connecting plate, a cooling pipe is fixedly connected to the outer surface of the rotating shaft, and a plurality of nozzles are fixedly communicated with the outer surface of the cooling pipe.

[0006] Further, a water pump is fixedly installed on the outer surface of the front side of the mold base. The input end of the water pump is fixedly communicated with a water suction pipe. One end of the water suction pipe away from the input end of the water pump is communicated with the inside of the mold base. The output end of the water pump is fixedly communicated with a drain pipe. One end of the drain pipe away from the output end of the water pump is fixedly communicated with the inside of the front side cooling pipe.

[0007] Further, the outer surface of the top of the mold base is in a grid-like shape. A refrigeration pipe is arranged inside the mold base. The other end of the refrigeration pipe is communicated with the output end of an external refrigerator.

[0008] Further, first bevel gears are fixedly sleeved at both ends of the front side rotating shaft and the left side rotating shaft. Second bevel gears are fixedly sleeved at the front end of the right side rotating shaft and the left end of the rear side rotating shaft. The first bevel gears adjacent to each other between the front side rotating shaft and the left side rotating shaft are meshed with each other. The second bevel gear on the right side is movably meshed with the outer surface of the first bevel gear near the right end on the front side. The second bevel gear on the left side is movably meshed with the outer surface of the first bevel gear near the left end on the rear side.

[0009] Further, connecting pipes are arranged between the four cooling pipes. The four cooling pipes are communicated with each other through the connecting pipes.

[0010] Further, both the drain pipe and the connecting pipe are telescopic hoses.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. For this plastic mold cooling mechanism, cooling water is pumped into the cooling pipe by a water pump and sprayed out through a nozzle. In cooperation with the motor, semi-gear, full-gear and spiral spring, the nozzle is driven to rotate within a certain range during the operation of the motor, so that the cooling water is evenly sprayed onto the surface of the lower mold. By adopting the method of water cooling and direct contact with the lower mold, the lower mold is cooled, improving the cooling effect on the lower mold. In addition, the present utility model can be used for cooling of similar molds, and the cooling effect is better.

[0013] 2. For this plastic mold cooling mechanism, the cooling water that exchanges heat with the lower mold enters the inside of the mold base and exchanges heat with the heat in the cooling water through the refrigeration pipe, so that the cooling water in the mold base is in a state of lower temperature, thus enabling the repeated use of the cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view structural schematic diagram of the present utility model;

[0015] Figure 2 is a rear view structural schematic diagram of the present utility model;

[0016] Figure 3 For the present utility modelFigure 2 Schematic diagram of the enlarged structure at position A;

[0017] Figure 4 This is a utility model Figure 2 Schematic diagram of the enlarged structure at position B;

[0018] Figure 5 Schematic top cross-sectional view of this utility model.

[0019] In the figure: 1, die holder; 2, lower die; 3, forming cavity; 4, vertical plate; 5, rotating shaft; 6, transmission shaft; 7, semi-gear; 8, full gear; 9, motor; 10, coil spring; 11, first bevel gear; 12, second bevel gear; 13, cooling pipe; 14, spray head; 15, water pump; 16, water suction pipe; 17, drain pipe. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Embodiment 1:

[0022] Please refer to Figures 1-5, the present utility model provides a technical solution: a cooling mechanism for a plastic mold, including a mold base 1, a lower mold 2 is installed on the outer surface of the top of the mold base 1, a molding cavity 3 is arranged inside the lower mold 2, vertical plates 4 are fixedly connected to the outer surface of the top of the mold base 1 around the lower mold 2, a rotating shaft 5 passes through the outer surface of each of the four vertical plates 4 in a rotating manner, a vertical plate is fixedly connected to the outer surface of the top of the mold base 1 at the rear side, a transmission shaft 6 is rotatably connected to the outer surface of the vertical plate, a motor 9 is fixedly installed on the outer surface of the right side of the vertical plate, the output end of the motor 9 is fixedly connected to the transmission shaft 6, a semi-gear 7 is fixedly sleeved on the outer surface of the transmission shaft 6, a full-gear 8 is fixedly sleeved on the outer surface of the rotating shaft 5, the outer surfaces of the semi-gear 7 and the full-gear 8 are movably engaged, a connecting plate is fixedly connected to the outer surface of the vertical plate, a winding spring 10 is wound around the outer surface of the rotating shaft 5, the other end of the winding spring 10 is fixedly connected to the outer surface of the top of the connecting plate, a cooling pipe 13 is fixedly connected to the outer surface of the rotating shaft 5, and a plurality of nozzles 14 are fixedly connected and communicated to the outer surface of the cooling pipe 13. Specifically, when the motor 9 is turned on, the motor 9 drives the semi-gear 7 to rotate, the rotation of the semi-gear 7 drives the full-gear 8 to rotate, and multiple rotating shafts 5 rotate simultaneously. During the rotation of the rotating shaft 5, the cooling pipe 13 and the nozzles 14 are driven to rotate, and the winding spring 10 is deformed. When the semi-gear 7 disengages from the surface of the full-gear 8, the winding spring 10 resets, driving the rotating shaft 5 to reset. Thus, during the rotation of the motor 9, the nozzles 14 are driven to rotate within a certain range, enabling the nozzles 14 to evenly spray the cooling water onto the surface of the lower mold 2. Therefore, by adopting the method of water cooling and directly contacting the lower mold 2, the cooling effect of the lower mold 2 is improved.

[0023] In this embodiment, a water pump 15 is fixedly installed on the outer surface of the front side of the mold base 1. The input end of the water pump 15 is fixedly connected and communicated with a water suction pipe 16. One end of the water suction pipe 16 away from the input end of the water pump 15 is communicated with the inside of the mold base 1. The output end of the water pump 15 is fixedly connected and communicated with a drain pipe 17. One end of the drain pipe 17 away from the output end of the water pump 15 is fixedly connected and communicated with the inside of the front-side cooling pipe 13. Specifically, when the water pump 15 is turned on, the water pump 15 pumps the cooling water into the cooling pipe 13 through the water suction pipe 16 and sprays it out through the nozzles 14.

[0024] In this embodiment, the outer surface of the top of the mold base 1 is in a grid-like shape, and a refrigeration pipe is arranged inside the mold base 1. The other end of the refrigeration pipe is connected to the output end of an external refrigerator. Specifically, after the cooling water exchanges heat with the lower mold 2, the water flows back to the inside of the mold base 1 through the grid-like shape, and the heat in the cooling water is exchanged through the refrigeration pipe, so that the cooling water inside the mold base 1 is in a state of lower temperature, thereby enabling the cooling water to be reused.

[0025] In this embodiment, first bevel gears 11 are fixedly sleeved at both ends of the front-side rotating shaft 5 and the left-side rotating shaft 5. Second bevel gears 12 are fixedly sleeved at the front end of the right-side rotating shaft 5 and the left end of the rear-side rotating shaft 5. The first bevel gears 11 adjacent to each other between the front-side rotating shaft 5 and the left-side rotating shaft 5 are meshed with each other. The second bevel gear 12 on the right is movably meshed with the outer surface of the first bevel gear 11 near the right end on the front side, and the second bevel gear 12 on the left is movably meshed with the outer surface of the first bevel gear 11 near the left end on the rear side. Specifically, when the rotating shaft 5 at the rear side rotates, it drives the second bevel gear 12 thereon to rotate. Through the cooperation and rotation of multiple first bevel gears 11 and second bevel gears 12, multiple rotating shafts 5 rotate simultaneously.

[0026] In this embodiment, connecting pipes are provided between all four cooling pipes 13, and the four cooling pipes 13 are connected and communicated through the connecting pipes. Specifically, the four cooling pipes 13 are connected and communicated through the connecting pipes. When the water pump 15 pumps the cooling water into the front-side cooling pipe 13, it enters multiple cooling pipes 13 through the connecting pipes.

[0027] In this embodiment, both the drain pipe 17 and the connecting pipe are telescopic hoses. Specifically, through the telescopic hoses, when the rotating shaft 5 drives the cooling pipe 13 to rotate, the corresponding drain pipe 17 and connecting pipe expand and contract accordingly.

[0028] Working principle: When the present utility model is in use, the plastic is injection-molded in the molding cavity 3 through the cooperation of the lower mold 2 and the upper mold. When it is necessary to cool the lower mold 2, the water pump 15 is turned on. The water pump 15 pumps the cooling water into the cooling pipe 13 through the water suction pipe 16 and sprays it out through the nozzle 14. At the same time, the motor 9 is turned on. The motor 9 drives the half gear 7 to rotate. The rotation of the half gear 7 drives the full gear 8 to rotate, causing the rotating shaft 5 to rotate. When the rotating shaft 5 rotates, it drives the second bevel gear 12 thereon to rotate. The second bevel gear 12 drives the adjacent first bevel gear 11 to rotate, so that multiple rotating shafts 5 rotate simultaneously. During the rotation of the rotating shaft 5, it drives the cooling pipe 13 and the nozzle 14 to rotate and causes the coil spring 10 to deform. When the half gear 7 disengages from the surface of the full gear 8, the coil spring 10 resets and drives the rotating shaft 5 to reset. Thus, during the rotation of the motor 9, the nozzle 14 is driven to rotate within a certain range, so that the nozzle 14 evenly sprays the cooling water onto the surface of the lower mold 2. Therefore, by using water cooling and directly contacting the lower mold 2, the cooling effect of the lower mold 2 is improved.

[0029] After the cooling water exchanges heat with the lower mold 2, the water flow returns to the inside of the mold base 1, and the heat in the cooling water is exchanged through the refrigeration pipe, so that the cooling water in the mold base 1 is in a state of lower temperature, thus enabling the cooling water to be reused.

[0030] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic mold cooling mechanism, comprising a mold base (1), characterized in that: The outer surface of the top of the die holder (1) is provided with a lower die (2). A forming cavity (3) is arranged inside the lower die (2). Vertical plates (4) are fixedly connected to the outer surface of the top of the die holder (1) around the lower die (2). A rotating shaft (5) rotatably penetrates through the outer surfaces of the four vertical plates (4). A vertical plate is fixedly connected to the outer surface of the top of the die holder (1) at the rear side. A transmission shaft (6) is rotatably connected to the outer surface of the vertical plate. A motor (9) is fixedly installed on the outer surface of the right side of the vertical plate. The output end of the motor (9) is fixedly connected to the transmission shaft (6). A semi-gear (7) is fixedly sleeved on the outer surface of the transmission shaft (6). A full gear (8) is fixedly sleeved on the outer surface of the rotating shaft (5). The outer surfaces of the semi-gear (7) and the full gear (8) are movably meshed. A connecting plate is fixedly connected to the outer surface of the vertical plate (4). A coil spring (10) is wound around the outer surface of the rotating shaft (5). The other end of the coil spring (10) is fixedly connected to the outer surface of the top of the connecting plate. A cooling pipe (13) is fixedly connected to the outer surface of the rotating shaft (5). A plurality of spray nozzles (14) are fixedly communicated with the outer surface of the cooling pipe (13).

2. The cooling mechanism of a plastic mold according to claim 1, wherein: A water pump (15) is fixedly installed on the outer surface of the front side of the die holder (1). A water suction pipe (16) is fixedly communicated with the input end of the water pump (15). One end of the water suction pipe (16) far away from the input end of the water pump (15) is communicated with the inside of the die holder (1). A drain pipe (17) is fixedly communicated with the output end of the water pump (15). One end of the drain pipe (17) far away from the output end of the water pump (15) is fixedly communicated with the inside of the front side cooling pipe (13).

3. The cooling mechanism of a plastic mold according to claim 2, wherein: The outer surface of the top of the die holder (1) is in a grid-like shape. A refrigeration pipe is arranged inside the die holder (1). The other end of the refrigeration pipe is communicated with the output end of an external refrigerator.

4. A plastic mold cooling mechanism according to claim 3, characterized in that: First bevel gears (11) are fixedly sleeved on both ends of the front side rotating shaft (5) and the left side rotating shaft (5). Second bevel gears (12) are fixedly sleeved on the front end of the right side rotating shaft (5) and the left end of the rear side rotating shaft (5). The adjacent first bevel gears (11) between the front side rotating shaft (5) and the left side rotating shaft (5) are meshed with each other. The second bevel gear (12) on the right side is movably meshed with the outer surface of the first bevel gear (11) at the right end of the front side. The second bevel gear (12) on the left side is movably meshed with the outer surface of the first bevel gear (11) at the left end of the rear side.

5. The cooling mechanism of a plastic mold according to claim 4, characterized in that: Connection pipes are arranged between the four cooling pipes (13). The four cooling pipes (13) are communicated with each other through the connection pipes.

6. The cooling mechanism of a plastic mold according to claim 5, characterized in that: The drain pipe (17) and the connection pipes are both telescopic hoses.

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