A motorcycle light injection mold

Abstract

The invention discloses an injection mold for a motorcycle lamp, which belongs to the technical field of injection molds. The mold comprises a base and a fixed mold arranged on the base, a movable mold is arranged above the fixed mold, a gate is arranged on the movable mold, a lifting structure extending into the fixed mold is arranged on the base, an upper flow channel is arranged in the movable mold, a lower flow channel corresponding to the upper flow channel is arranged inside the fixed mold, and a plurality of heat dissipation columns penetrating the corresponding fixed mold and movable mold are arranged in the upper and lower flow channels; a circulating flow channel coaxial with the gate is arranged on the movable mold, both ends of the circulating flow channel are connected with the upper flow channel, heat conduction columns are arranged on both sides of the circulating flow channel, and heat dissipation plates are arranged on the tops of the heat conduction columns and the heat dissipation columns; a heat conduction structure is arranged at the bottom of the heat conduction column in the circulating flow channel; the purpose is to solve the problem that the heat dissipation performance of the mold is poor during the injection molding process, which causes the plastic to be unable to be cooled quickly and affects the processing efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molds, and in particular relates to an injection mold for a motorcycle lamp. Background Art

[0002] Injection molding is a processing method used in the mass production of certain complex-shaped parts. Specifically, it refers to the high-pressure injection of heated and molten plastic into the mold cavity by the injection molding machine, and then the molded product is obtained after cooling and solidification. Motorcycle lights are composed of reflectors, lenses, lampshades, light sources and other installation accessories. At present, lampshades are often produced by injection molding of plastic materials.

[0003] During the injection molding process, the temperature of the melted plastic is high, while the heat dissipation performance of the mold is poor, resulting in the plastic being unable to cool down quickly, affecting processing efficiency. Summary of the invention

[0004] In view of this, the present invention discloses an injection mold for a motorcycle lamp, which aims to solve the problem that the heat dissipation performance of the mold is poor during the injection molding process, resulting in the inability to quickly cool down the plastic and affecting the processing efficiency.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A motorcycle lamp injection mold comprises a base and a fixed mold arranged on the base, a movable mold is arranged above the fixed mold, a gate is arranged on the movable mold, a lifting structure extending into the fixed mold is arranged on the base, an upper flow channel is arranged in the movable mold, a lower flow channel corresponding to the upper flow channel is arranged inside the fixed mold, and a plurality of heat dissipation columns penetrating the corresponding fixed mold and movable mold are arranged in the upper flow channel and the lower flow channel; a circulating flow channel coaxial with the gate is arranged on the movable mold, both ends of the circulating flow channel are connected with the upper flow channel, heat-conducting columns vertically penetrating the movable mold are arranged on both sides of the circulating flow channel, and heat dissipation plates are arranged on the top of the heat-conducting columns and the heat-dissipating columns; an arc-shaped heat-conducting structure is arranged in the circulating flow channel, and the heat-conducting structure is coaxial with the circulating flow channel; the lower flow channel bypasses the lifting structure, and a pump for pumping coolant to the lower flow channel is arranged in the fixed mold; a locking structure for closing the port is arranged between the upper flow channel port and the lower flow channel port.

[0007] In this solution, the coolant is pumped by a pump to circulate in the upper flow channel, the lower flow channel and the circulating flow channel, thereby quickly cooling and lowering the temperature of the mold, so that the plastic is quickly cooled to facilitate demolding; in addition, heat dissipation columns are provided in the upper flow channel and the lower flow channel, and the heat dissipation columns are used to transfer the heat in the coolant to the heat sink and dissipate it to the outside, so that the temperature of the coolant in each part of the upper flow channel and the lower flow channel is close, thereby avoiding different cooling of the coolant to different parts of the product, resulting in partial deformation of the product and making the product difficult to demold.

[0008] At the same time, a circulation channel is provided at the gate, so that the coolant can cool the gate synchronously to avoid mold sticking at the gate, which makes it difficult to demold the product. In addition, a heat-conducting structure is provided on the circulation channel, which uses the heat-conducting structure to conduct the heat accumulated in the coolant in the circulation channel to the heat-conducting column and dissipate it to the outside through the corresponding heat sink, so that the coolant temperature at the inlet and outlet ends of the circulation channel is close to each other, which avoids uneven cooling on both sides of the gate, which makes it difficult to demold the gate.

[0009] Furthermore, the heat-conducting column is rotatably connected to the movable mold; the heat-conducting structure includes an arc-shaped heat-conducting block, the inner arc surface of the heat-conducting block is provided with a concentric and arc-shaped slide groove, an arc-shaped support is slidably connected in the slide groove, a support rod facing the gate is fixed on the support, and the end of the support rod is fixedly connected to the side wall of the circulation channel; a concentric arc-shaped groove is provided on the upper end surface of the heat-conducting block, and coolant is also provided in the arc-shaped groove, a driving gear extending into the arc-shaped groove is fixed at the bottom of the heat-conducting column, and the driving gear is meshed with one of the side walls of the arc-shaped groove; a sealing plate for closing the arc-shaped groove is slidably connected to the heat-conducting block, the heat-conducting column and the sealing plate are rotatably connected, and the sealing plate is arc-shaped and concentric with the heat-conducting block.

[0010] In this solution, the heat conducting block conducts the heat of the coolant to the coolant in the arc groove, and conducts and cools it down through the heat conducting column. When the product specifications change to cause the coolant flow rate or temperature to change, the support rod and the support are used to guide the heat conducting block, and the heat conducting column and the driving gear are used to drive the heat conducting block to move in the circulation channel by rotating the heat conducting column, thereby adjusting the position of the heat conducting block. When the heat of the coolant is high, the heat conducting block is moved closer to the inlet end of the circulation channel, and when the heat of the coolant is low, the heat conducting block is moved closer to the outlet end of the circulation channel, thereby controlling the heat dissipation efficiency of the coolant, making the coolant temperatures at the inlet end and the outlet end of the circulation channel closer, thereby cooling the gate more evenly.

[0011] Furthermore, the bottom of the heat-conducting column is coaxially provided with an installation groove, and the installation groove is coaxially rotatably connected to a rotating shaft extending into the arc groove, and a plurality of guide plates are arranged on the circumferential side of the bottom of the rotating shaft; the circumferential side of the heat-conducting column is coaxially rotatably connected to an annular block, and blades are arranged on the upper side wall of the annular block; the side wall of the heat-conducting column is provided with a groove, and the groove is rotatably connected to a transmission gear, and the transmission gear is meshed with the inner wall of the annular block and the side wall of the rotating shaft at the same time.

[0012] In this solution, when the coolant flows in the circulating channel, the blades drive the annular block to rotate, and the annular block drives the rotating shaft to rotate through the transmission gear. The rotating shaft drives the coolant in the arc groove to flow continuously through the guide plate, so that the coolant can better contact the heat-conducting column, thereby accelerating the heat dissipation efficiency of the heat-conducting column.

[0013] Furthermore, the locking structure includes an installation cavity arranged at the upper flow channel port and the lower flow channel port, and a plurality of telescopic cylinders are arranged on the periphery of the installation cavity. The ends of the telescopic cylinders are all provided with fan-shaped closing plates, and the closing plates in the same installation cavity are gathered together to form a circle.

[0014] Furthermore, waterproof rubber is provided on the peripheral sides of the closing plate.

[0015] Furthermore, a spiral guide groove is provided on the periphery of the heat conducting block.

[0016] Furthermore, an arc-shaped guide groove is provided on the heat-conducting block, the guide groove is cocentric with the heat-conducting block, and a guide block slidably connected to the guide groove is provided at the bottom of the sealing plate.

[0017] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0020] Figure 2 A longitudinal cross-sectional view of an embodiment of the present invention;

[0021] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0022] Figure 4 is a transverse cross-sectional view of a gate in an embodiment of the present invention;

[0023] Figure 5 is a longitudinal cross-sectional view of a heat-conducting structure in an embodiment of the present invention;

[0024] Figure 6 for Figure 5 A magnified schematic diagram of point B in the middle.

[0025] The markings in the accompanying drawings are as follows: base 1, fixed mold 2, movable mold 3, gate 4, lifting structure 5, upper runner 6, circulating runner 7, lower runner 8, heat-conducting column 9, heat dissipation plate 10, heat-conducting block 11, support 12, support rod 13, driving gear 14, sealing plate 15, rotating shaft 16, annular block 17, blade 18, transmission gear 19, telescopic cylinder 20, guide block 21, closing plate 22, spoiler 23, heat dissipating column 24. DETAILED DESCRIPTION

[0026] like Figures 1 to 6 As shown:

[0027] A motorcycle lamp injection mold comprises a base 1 and a fixed mold 2 arranged on the base 1, a movable mold 3 is arranged above the fixed mold 2, a gate 4 is arranged on the movable mold 3, a jacking structure 5 extending into the fixed mold 2 is arranged on the base 1, the jacking structure 5 is used for product demoulding, which belongs to conventional technical means, so it is not described in detail, an upper runner 6 is arranged in the movable mold 3, a lower runner 8 corresponding to the upper runner 6 is arranged inside the fixed mold 2, and a plurality of heat dissipation columns 24 penetrating the corresponding fixed mold 2 and the movable mold 3 are arranged in the upper runner 6 and the lower runner 8; the movable mold 3 is provided with a gate 4 corresponding to the gate 4. A coaxial circulation channel 7, both ends of which are connected to the upper flow channel 6, and both sides of the circulation channel 7 are provided with heat-conducting columns 9 that vertically penetrate the movable mold 3, and heat-dissipating plates 10 are provided on the top of the heat-conducting columns 9 and the heat-dissipating columns 24; an arc-shaped heat-conducting structure is provided in the circulation channel 7, and the heat-conducting structure is coaxial with the circulation channel 7; the lower flow channel 8 bypasses the jacking structure 5, and a pump for pumping coolant to the lower flow channel 8 is provided in the fixed mold 2 (it is a conventional technical means for those skilled in the art, so it is not drawn in the figure); a locking structure for closing the port is provided between the port of the upper flow channel 6 and the port of the lower flow channel 8.

[0028] In this solution, the coolant is pumped by a pump to circulate in the upper flow channel 6, the lower flow channel 8 and the circulating flow channel 7, thereby quickly cooling and lowering the temperature of the mold, and quickly cooling the plastic to facilitate demolding; in addition, heat dissipation columns 24 are provided in the upper flow channel 6 and the lower flow channel 8. The heat dissipation columns 24 are used to conduct the heat in the coolant to the heat sink 10 and dissipate it to the outside, so that the temperature of the coolant in each part of the upper flow channel 6 and the lower flow channel 8 is close, thereby avoiding different cooling of the coolant to different parts of the product, resulting in partial deformation of the product and making it difficult to demold the product.

[0029] At the same time, a circulation channel 7 is provided at the gate 4, so that the coolant can cool the gate 4 synchronously, avoiding the gate 4 from sticking to the mold, which makes it difficult to demold the product; in addition, a heat-conducting structure is provided on the circulation channel 7, which uses the heat-conducting structure to conduct the heat accumulated by the coolant in the circulation channel 7 to the heat-conducting column 9, and dissipates it to the outside through the corresponding heat sink 10, so that the coolant temperature at the inflow end and the outflow end of the circulation channel 7 is close, avoiding uneven cooling on both sides of the gate 4, which makes it difficult to demold the gate 4. In addition, the design of the heat-conducting structure also hinders the flow of the coolant to a certain extent, thereby extending the flow time of the coolant, so that the coolant can take away more heat, thereby improving the cooling effect on the gate 4.

[0030] In this embodiment, the heat-conducting column 9 is rotatably connected to the movable mold 3, and a latch for limiting the rotation of the heat-conducting column 9 is detachably connected to the movable mold 3 (a conventional technical means of those skilled in the art, so it is not drawn in the figure); the heat-conducting structure includes an arc-shaped heat-conducting block 11, and a concentric and arc-shaped slide groove is provided on the inner arc surface of the heat-conducting block 11, and an arc-shaped support 12 is slidably connected in the slide groove, and a support rod 13 facing the gate 4 is fixed on the support 12, and the end of the support rod 13 The heat conductive block 11 is fixedly connected to the side wall of the circulation channel 7; the upper end surface of the heat conductive block 11 is provided with a concentric arc groove, and the arc groove is also provided with a coolant. The bottom of the heat conductive column 9 is fixed with a driving gear 14 extending into the arc groove, and the driving gear 14 is engaged with one side wall of the arc groove; the heat conductive block 11 is slidably connected with a sealing plate 15 for closing the arc groove, and the heat conductive column 9 is rotatably connected with the sealing plate 15, and the sealing plate 15 is arc-shaped and concentric with the heat conductive block 11.

[0031] In this solution, the heat-conducting block 11 conducts the heat of the coolant to the coolant in the arc groove, and cools it down through the heat-conducting column 9; when the product specifications change to cause the coolant flow rate or temperature to change, the support rod 13 and the support 12 are used to guide the heat-conducting block 11, and the heat-conducting column 9 and the driving gear 14 are used to drive the heat-conducting block 11 to move in the circulation channel 7 by rotating the heat-conducting column 9, thereby adjusting the position of the heat-conducting block 11. When the heat of the coolant is high, the heat-conducting block 11 is moved close to the inflow end of the circulation channel 7, and when the heat of the coolant is low, the heat-conducting block 11 is moved close to the outflow end of the circulation channel 7, thereby controlling the heat dissipation efficiency of the coolant, making the coolant temperatures at the inflow end and the outflow end of the circulation channel 7 closer, thereby cooling the gate 4 more evenly.

[0032] In this embodiment, the bottom of the heat-conducting column 9 is coaxially provided with a mounting groove, and the mounting groove is coaxially rotatably connected to a rotating shaft 16 extending into the arc groove, and a plurality of guide plates are arranged around the bottom of the rotating shaft 16; the heat-conducting column 9 is coaxially rotatably connected to an annular block 17 on the circumference, and blades 18 are arranged on the upper side wall of the annular block 17, and the side wall of the heat-conducting column 9 is provided with a groove, and the groove is rotatably connected to a transmission gear 19, and the transmission gear 19 is meshed with the inner wall of the annular block 17 and the side wall of the rotating shaft 16 at the same time.

[0033] In this solution, when the coolant flows in the circulating channel 7, the blades 18 drive the annular block 17 to rotate, and the annular block 17 drives the rotating shaft 16 to rotate through the transmission gear 19. The rotating shaft 16 drives the coolant in the arc groove to flow continuously through the guide plate, so that the coolant can better contact the heat-conducting column 9, thereby accelerating the heat dissipation efficiency of the heat-conducting column 9.

[0034] In this embodiment, the locking structure includes an installation cavity arranged at the port of the upper flow channel 6 and the port of the lower flow channel 8. A plurality of telescopic cylinders 20 are arranged on the periphery of the installation cavity. The ends of the telescopic cylinders 20 are provided with fan-shaped closing plates 22. The closing plates 22 in the same installation cavity are gathered together to form a circle.

[0035] When the movable mold 3 is closed, the telescopic cylinder 20 is controlled to contract, thereby driving the closing plate 22 to move, so that the upper flow channel 6 is connected with the lower flow channel 8; when the movable mold 3 is detached, the telescopic cylinder 20 is controlled to extend, thereby driving the closing plate 22 to close, locking the ports of the upper flow channel 6 and the lower flow channel 8 to prevent the coolant from flowing out.

[0036] In this embodiment, waterproof rubber is provided around the sealing plate 22 to prevent the coolant from overflowing.

[0037] In this embodiment, a spiral guide groove is provided on the periphery of the heat conducting block 11 (this is a conventional technical means used by those skilled in the art, so it is not shown in the figure).

[0038] The coolant is guided by the guide groove so that the coolant rotates around the heat conducting block 11 while flowing in the circulation channel 7, so that more coolant contacts the gate 4 and the heat conducting block 11, thereby accelerating the cooling of the gate 4.

[0039] In this embodiment, an arc-shaped guide groove is provided on the heat-conducting block 11 , and the guide groove is cocentric with the heat-conducting block 11 . A guide block 21 slidably connected to the guide groove is provided at the bottom of the sealing plate 15 .

[0040] The cooperation between the guide block 21 and the guide groove guides the sealing plate 15 to prevent the sealing plate 15 from being separated from the heat conducting block 11 and causing leakage of the coolant.

[0041] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A motorcycle lamp injection mold, comprising a base and a fixed mold arranged on the base, a movable mold arranged above the fixed mold, a gate arranged on the movable mold, and a lifting structure extending into the fixed mold arranged on the base, characterized in that: An upper flow channel is arranged in the movable mold, and a lower flow channel corresponding to the upper flow channel is arranged inside the fixed mold, and a plurality of heat dissipation columns penetrating the corresponding fixed mold and movable mold are arranged in the upper flow channel and the lower flow channel; a circulating flow channel coaxial with the gate is arranged on the movable mold, and both ends of the circulating flow channel are connected with the upper flow channel, and heat-conducting columns vertically penetrating the movable mold are arranged on both sides of the circulating flow channel, and heat dissipation plates are arranged on the top of the heat-conducting columns and the heat-dissipating columns; an arc-shaped heat-conducting structure is arranged in the circulating flow channel, and the heat-conducting structure is coaxial with the circulating flow channel; the lower flow channel bypasses the jacking structure, and a pump for pumping coolant to the lower flow channel is arranged in the fixed mold; a port for closing the upper flow channel port and the lower flow channel port is arranged between the upper flow channel port and the lower flow channel port. The locking structure is such that the heat-conducting column is rotatably connected to the movable mold; the heat-conducting structure comprises an arc-shaped heat-conducting block, the inner arc surface of the heat-conducting block is provided with a concentric and arc-shaped slide groove, an arc-shaped support is slidably connected in the slide groove, a support rod facing the gate is fixed on the support, and the end of the support rod is fixedly connected to the side wall of the circulation channel; a concentric arc-shaped groove is provided on the upper end surface of the heat-conducting block, and a coolant is also provided in the arc-shaped groove, and a driving gear extending into the arc-shaped groove is fixed at the bottom of the heat-conducting column, and the driving gear is meshed with one side wall of the arc-shaped groove; a sealing plate for closing the arc-shaped groove is slidably connected to the heat-conducting block, the heat-conducting column and the sealing plate are rotatably connected, and the sealing plate is arc-shaped and concentric with the heat-conducting block.

2. The motorcycle lamp injection mold according to claim 1, characterized in that: The bottom of the heat-conducting column is coaxially provided with an installation groove, and the installation groove is coaxially rotatably connected to a rotating shaft extending into the arc groove, and a plurality of guide plates are arranged on the circumferential side of the bottom of the rotating shaft; the circumferential side of the heat-conducting column is coaxially rotatably connected to an annular block, and blades are arranged on the upper side wall of the annular block; the side wall of the heat-conducting column is provided with a groove, and the groove is rotatably connected to a transmission gear, and the transmission gear is meshed with the inner wall of the annular block and the side wall of the rotating shaft at the same time.

3. The motorcycle lamp injection mold according to claim 2, characterized in that: The locking structure includes an installation cavity arranged at the upper flow channel port and the lower flow channel port, and a plurality of telescopic cylinders are arranged around the installation cavity. The ends of the telescopic cylinders are all provided with fan-shaped closing plates. The closing plates in the same installation cavity are gathered together to form a circle.

4. The motorcycle lamp injection mold according to claim 3, characterized in that: The surrounding sides of the closing plate are all provided with waterproof rubber.

5. The motorcycle lamp injection mold according to claim 4, characterized in that: A spiral guide groove is provided on the periphery of the heat conducting block.

6. The motorcycle lamp injection mold according to claim 5, characterized in that: The heat conducting block is provided with an arc-shaped guide groove, which is cocentric with the heat conducting block. The bottom of the sealing plate is provided with a guide block which is slidably connected with the guide groove.

Images