Forming die for automobile light-transmitting strip

Abstract

The utility model discloses a forming die of an automobile light-transmitting strip, which comprises an upper die plate, a lower die plate, an upper die holder, a lower die holder, an upper die core arranged in the upper die holder and a lower die core arranged in the lower die holder, a pin-point gate is arranged on the upper die plate, the lower part of the pin-point gate is communicated with the upper die core through a pin-point gate channel, a protruding part is arranged on the upper die core, and the lower part of the protruding part is communicated with the lower part of the pin-point gate. A protruding part is arranged on the upper mold core, a forming ring part is arranged in the center of the protruding part and comprises a ring bottom part lower than the protruding part and a ring body part higher than the protruding part, a main body forming part is arranged at the position, located on the inner side of the ring body part, of the upper mold core, runner grooves are formed in the positions, located on the two sides of the forming ring part, of the protruding part, and the runner grooves communicate with the point pouring channel. The light-transmitting strip forming die is reasonable in structural design, the annular light-transmitting strip can be well formed by arranging the forming ring part, the runner groove and the branch runners on the upper die core and arranging the matching structure on the lower die core, and the forming quality can be better guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of automotive mold technology, and more specifically, to a molding mold for automotive light-transmitting strips. Background Technology

[0002] In existing technologies, automotive interior modules such as window control button holders are typically injection molded in a single process. However, as users' demands for in-car ambiance continue to increase, there is a growing need to add ambient lighting to these modules. Therefore, it is necessary to incorporate a light-transmitting structure into these modules to allow light to pass through and achieve the desired ambient lighting effect.

[0003] Therefore, it is necessary to design corresponding molds for automotive light-transmitting strips in order to set the corresponding light-transmitting structures on in-vehicle modular components such as the button bases for window control. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art. Its structure is reasonably designed. By setting the forming ring part, flow channel groove and multiple flow channels on the upper mold core, as well as the matching structure on the lower mold core, it can achieve good forming of the annular light-transmitting strip and better ensure the forming quality.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A molding die for a car light-transmitting strip includes an upper mold plate, a lower mold plate, an upper mold base, a lower mold base, an upper mold core disposed in the upper mold base, and a lower mold core disposed in the lower mold base. The upper mold plate has a sprue, which communicates with the upper mold core via a sprue channel. The upper mold core has a protrusion, and a molding ring is located at the center of the protrusion. The molding ring includes a ring bottom lower than the protrusion and a ring body higher than the protrusion. A main molding part is located on the inner side of the ring body on the upper mold core. Runner grooves are located on both sides of the molding ring on the protrusion, communicating with the sprue channel. Several branch runners are arranged around the outer periphery of the molding ring on the protrusion, extending from the edge of the protrusion to the molding ring. The lower mold core has a recess corresponding to the protrusion, and a mating ring adapted to the molding ring and a main mating part adapted to the main molding part are located at the center of the recess.

[0007] Preferably, the flow distribution channel is provided with a flow distribution groove that is lower than the surface of the flow distribution channel. The part of the flow distribution channel excluding the flow distribution groove is a flow equalization groove, which is set higher than the flow distribution groove but lower than the forming ring part.

[0008] Preferably, the lower mold core is provided with a mating groove corresponding to the two flow channel grooves. The mating groove is provided with a through hole and a concave groove, and a mating ejector pin is inserted through the through hole.

[0009] Preferably, the lower mold core includes a mold core body and two side inserts disposed on both sides of the mold core body.

[0010] Preferably, a protrusion is provided on the mold core body at a position opposite to the side insert, and a mating groove is provided on the side insert to cooperate with the protrusion.

[0011] Preferably, the groove is provided on the protrusion.

[0012] The beneficial effects of this utility model are as follows: The structure of this utility model is reasonably designed. By setting the forming ring part, flow channel groove and multiple flow channels on the upper mold core, and setting the matching structure on the lower mold core, it is possible to achieve good forming of the annular light-transmitting strip and better ensure the forming quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram illustrating the structure of the upper mold core and the lower mold core in a specific embodiment of this utility model;

[0015] Figure 3 This is a schematic diagram illustrating the structure of the upper mold core in a specific embodiment of this utility model;

[0016] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0017] Figure 5 This is a schematic diagram illustrating the structure of the lower mold core in a specific embodiment of this utility model;

[0018] Figure 6 This is a schematic diagram illustrating part of the structure of the lower mold core in a specific embodiment of this utility model;

[0019] Figure 7 This is a schematic diagram illustrating the structure of the side insert in a specific embodiment of this utility model.

[0020] In the diagram: 1. Upper mold plate; 11. Sprue; 2. Lower mold plate; 3. Upper mold base; 4. Lower mold base; 5. Upper mold core; 51. Main molding part; 6. Lower mold core; 61. Recessed part; 62. Mating ring part; 63. Main mating part; 64. Mating groove; 65. Through hole; 66. Concave corner groove; 67. Mold core body; 68. Side insert; 69. Protrusion; 70. Mating groove; 7. Protrusion; 71. Molding ring part; 72. Ring bottom; 73. Ring body; 8. Runner groove; 81. Sprue channel; 82. Runner; 83. Runner groove; 84. Flow equalization groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-7As shown, a molding die for a car light-transmitting strip includes an upper mold plate 1, a lower mold plate 2, an upper mold base 3, a lower mold base 4, an upper mold core 5 disposed in the upper mold base 3, and a lower mold core 6 disposed in the lower mold base 4. The upper mold plate 1 has a sprue 11, which is connected to the upper mold core 5 via a sprue channel 81. The upper mold core 5 has a protrusion 7, and a molding ring portion 71 is disposed in the center of the protrusion 7. The molding ring portion 71 includes a portion lower than the protrusion 7. The ring has a bottom 72 and a ring body 73 that is higher than the protrusion 7. A main molding part 51 is provided on the inner side of the ring body 73 on the upper mold core 5. Runner grooves 8 are provided on both sides of the molding ring 71 on the protrusion 7, and the runner grooves 8 communicate with the spot gating channel 81. Several branch runners 82 are provided around the outer periphery of the molding ring 71 on the protrusion 7, extending from the edge of the protrusion 7 to the molding ring 71. The lower mold core 6 is provided with… A recessed portion 61 corresponding to the protrusion 7 is provided in the center of the recessed portion 61, which is fitted with a mating ring portion 62 adapted to the molding ring portion 71 and a main body mating portion 63 adapted to the main body molding portion 51; a flow channel 82 is provided with a flow channel groove 83 lower than the surface of the flow channel 82, and the part of the flow channel 82 excluding the flow channel groove 83 is a flow equalization groove 84, which is higher than the flow channel groove 83 but lower than the molding ring portion 71; a mating groove 64 corresponding to the two flow channel grooves 8 is provided on the lower mold core 6, and a through hole 65 and a concave corner groove 66 are provided in the mating groove 64, and a matching ejector pin is inserted in the through hole 65; the lower mold core 6 includes a mold core body 67 and two side inserts 68 provided on both sides of the mold core body 67; a protrusion 69 is provided on the mold core body 67 at a position opposite to the side insert 68, and a mating groove 70 that mates with the protrusion 69 is provided on the side insert 68; the mating groove 64 is provided on the protrusion 69.

[0023] By adopting the above technical solution, the main objective of this utility model is to integrally injection mold a ring-shaped light-transmitting strip onto the button base of the car window control, which is equivalent to one set of molds in this application of a two-color mold. The main feature lies in the molding of the light-transmitting strip.

[0024] The ring-shaped light-transmitting strip is formed by the molding ring portion 71 of the upper mold core 5 and the mating ring portion 62 of the lower mold core 6. By setting a ring bottom 72 that is lower than the protrusion 7 and a ring body portion 73 that is higher than the protrusion 7, it is convenient for molten plastic to enter the ring bottom 72 and for the ring body portion 73 to be formed.

[0025] By setting multiple flow channels 82 around the outer periphery of the forming ring portion 71, and by providing flow-dividing grooves 83 and flow-equalizing grooves 84 within the flow channels 82, the molten plastic entering the flow channels 82 will first enter the flow-dividing grooves 83. Then, when the accumulated amount of molten plastic reaches the height of the flow-equalizing groove 84, the molten plastic will enter the forming ring portion 71 through the flow-equalizing groove 84 to form a ring-shaped light-transmitting strip. The flow-equalizing groove 84 ensures that the molten plastic enters the forming ring portion 71 evenly, achieving a better forming effect. The plastic can be made of PC material to ensure that the formed ring has light-transmitting properties.

[0026] Furthermore, by matching the groove 64 with the runner groove 8, the positional accuracy of the molten plastic entering the upper mold core 5 and the lower mold core 6 is ensured, and the ejector pin provided in the through hole 65 can be used to eject the molded part located in the matching groove 64.

[0027] Finally, by setting the lower mold core 6 as a separate mold core body 67 and side insert 68, it is convenient to manufacture and form the lower mold core 6, and the cooperation of the protrusion 69 and the mating groove 70 has a good installation and positioning function for the side insert 68.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A molding die for a car light-transmitting strip, comprising an upper mold plate (1), a lower mold plate (2), an upper mold base (3), a lower mold base (4), an upper mold core (5) disposed in the upper mold base (3), and a lower mold core (6) disposed in the lower mold base (4), wherein a sprue (11) is provided on the upper mold plate (1), and the lower part of the sprue (11) is connected to the upper mold core (5) through a sprue channel (81), characterized in that, The upper mold core (5) is provided with a protrusion (7), and a molding ring portion (71) is provided in the center of the protrusion (7). The molding ring portion (71) includes a ring bottom (72) provided below the protrusion (7) and a ring body portion (73) provided above the protrusion (7). The upper mold core (5) is provided with a main molding portion (51) located inside the ring body portion (73). The protrusion (7) is provided with runner grooves (8) on both sides of the molding ring portion (71). The runner grooves (8) are connected to the spot gating. The channel (81) is connected, and several branch channels (82) are provided on the protrusion (7) around the outer periphery of the molding ring (71). The branch channels (82) extend from the edge of the protrusion (7) to the molding ring (71). The lower mold core (6) is provided with a recess (61) corresponding to the protrusion (7). The center of the recess (61) is provided with a mating ring (62) that matches the molding ring (71) and a main body mating part (63) that matches the main body molding part (51).

2. The molding die for a car light-transmitting strip according to claim 1, characterized in that, The flow channel (82) is provided with a flow-dividing groove (83) that is lower than the surface of the flow channel (82). The part of the flow channel (82) excluding the flow-dividing groove (83) is a flow-equalizing groove (84). The flow-equalizing groove (84) is higher than the flow-dividing groove (83) but lower than the forming ring part (71).

3. A molding die for a car light-transmitting strip according to claim 1 or 2, characterized in that, The lower mold core (6) is provided with mating grooves (64) corresponding to the two flow channel grooves (8). The mating grooves (64) are provided with through holes (65) and concave corner grooves (66). The through holes (65) are provided with matching ejector pins.

4. The molding die for a car light-transmitting strip according to claim 3, characterized in that, The lower mold core (6) includes a mold core body (67) and two side inserts (68) located on both sides of the mold core body (67).

5. The molding die for a car light-transmitting strip according to claim 4, characterized in that, A protrusion (69) is provided on the mold core body (67) at a position opposite to the side insert (68), and a mating groove (70) is provided on the side insert (68) to cooperate with the protrusion (69).

6. The molding die for a car light-transmitting strip according to claim 5, characterized in that, The groove (64) is set on the protrusion (69).

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