Car lamp mask injection mold

Abstract

The utility model discloses a car lamp mask injection mold which comprises a supporting assembly, a lower mold base, a lower mold, a mold core, an upper mold base and an upper mold, the supporting assembly is matched with the lower mold base, a first groove is formed in the lower mold base, the lower mold is matched with the first groove, the lower mold is fixed to the lower mold base, the mold core is matched with the lower mold, a second groove is formed in the upper mold base, and the upper mold is matched with the second groove. The upper die is fixed with the upper die seat, a cavity is arranged on the upper die, after the cavity is matched with the die core, a die cavity is formed among the die core, the lower die and the upper die, a first through hole is arranged on the upper die seat, a second through hole is further arranged on the upper die, the charging barrel is matched with the first through hole and the second through hole, the sprue spreader is fixed with the lower die, and the sprue spreader is fixed with the lower die seat. The sprue spreader is inserted into the charging barrel, a first drainage groove is formed in the lower die, and the first drainage groove is matched with the die cavity and the sprue spreader respectively. According to the utility model, the flow speed of thermoplastic plastic in the runner can be slowed down, so that the product quality is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of car lamp, concretely relates to a car lamp cover injection mold. BACKGROUND

[0002] The car lamp cover is usually called "front headlamp cover" or "headlamp cover", and its main function is to protect the car lamp from the influence of external environment such as rain, dust, splashing stones, etc., and also can improve the lighting effect, so that the light is more uniform and concentratedly irradiated on the front road, and the driving safety is improved.

[0003] The material of the car lamp cover mainly has two kinds: PC material and glass material.

[0004] The PC material has the characteristics of excellent light transmission performance, easy forming, corrosion resistance, good impact resistance, etc., but is easy to yellow. If the ultraviolet protection film is regularly maintained and replaced, this defect can be avoided. The glass material has good light transmission, high temperature resistance and no yellowing, but is easy to break. Before the PC material is popular, the glass material is a common choice, but its fragility limits its application.

[0005] The car lamp cover of the PC material is usually formed by injection molding through a mold. When injection molding, the thermoplastic plastic enters the flow channel in the mold through the gate of the mold, and the thermoplastic plastic enters the mold cavity, and after cooling, the car lamp cover is formed. In the existing injection mold, the flow channel is relatively straight, and the flow speed of the thermoplastic plastic in the flow channel is relatively fast, which is easy to form impact on the material in the mold cavity, thereby affecting the quality of the product. UTILITY MODEL CONTENTS

[0006] The utility model provides a car lamp cover injection mold, the utility model can slow down the flow rate of thermoplastic plastic in the flow channel, thereby ensuring the quality of the product.

[0007] The technical scheme for solving the above technical problems is as follows:

[0008] The car lamp cover injection mold comprises a supporting assembly, a lower mold base, a lower mold, a mold core, an upper mold base, and an upper mold. The supporting assembly is matched with the lower mold base. The lower mold base is provided with a first groove. The lower mold is matched with the first groove. The lower mold is fixed with the lower mold base. The mold core is matched with the lower mold. The upper mold base is provided with a second groove. The upper mold is matched with the second groove. The upper mold is fixed with the upper mold base. The upper mold is provided with a cavity. The cavity is matched with the mold core, and a mold cavity is formed between the mold core and the lower mold and the upper mold. The upper mold base is provided with a first through hole. The upper mold is also provided with a second through hole. The car lamp cover injection mold further comprises a barrel and a flow divider. The barrel is matched with the first through hole and the second through hole. The flow divider is fixed with the lower mold. The flow divider is inserted into the barrel. The lower mold is provided with a first drainage groove. The first drainage groove is matched with the mold cavity and the flow divider respectively.

[0009] Further, the surface of the flow distribution cone is provided with a second flow guide groove matched with the first flow guide groove.

[0010] Further, the flow distribution cone comprises a cone part and a plug-in part, the cone part is fixed with the plug-in part, the lower mold is provided with a mounting hole matched with the plug-in part, and the second flow guide groove is arranged on the circumferential surface of the cone part and the axial end surface of the plug-in part.

[0011] Further, the support assembly comprises a support unit, the support unit is provided with a third groove matched with the mold core, and the support unit is further provided with a through hole matched with the third groove.

[0012] Further, the support assembly comprises a support unit, the support unit is provided with a third groove matched with the mold core, and the support unit is further provided with a through hole matched with the third groove.

[0013] Further, the lower mold base is provided with a first assembly hole, the lower mold is provided with a second assembly hole, the mold core is matched with the first assembly hole and the second assembly hole respectively, the mold core is provided with a guide rod, the support unit is provided with a guide hole, and the guide rod is matched with the guide hole in a clearance.

[0014] Further, the support unit comprises an upper support plate, a lower support plate and a connecting rod, one end of the connecting rod is connected with the upper support plate, the other end of the connecting rod is connected with the lower support plate, and the driving component is fixed with the lower support plate.

[0015] By arranging the barrel and the flow distribution cone, on one hand, the speed of the thermoplastic plastic entering into the first flow guide groove is slowed down, and the impact of the thermoplastic plastic on the thermoplastic plastic in the mold cavity is avoided, on the other hand, the flow distribution cone can disperse the thermoplastic plastic, so that the thermoplastic plastic enters into the first flow guide groove uniformly, and the uniformity of the thermoplastic plastic entering into the mold cavity is improved, and local material accumulation is avoided, so that the quality of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the injection mold for the car lamp cover.

[0017] Figure 2 It is a sectional view of the injection mold for the car lamp cover.

[0018] Figure 3 It is an assembly view of the lower mold and the flow distribution cone.

[0019] Figure 4 It is a structural view of the lower mold.

[0020] Figure 5 It is a structural view of the upper mold.

[0021] Markings in the drawings:

[0022] Lower die base 1, first groove 1a, first assembly hole 1b, lower die 2, first drainage groove 2a, second assembly hole 2b, mounting hole 2c, mold core 3, guide rod 3a, upper die base 4, second groove 4a, first through hole 4b, upper die 5, cavity 5a, second through hole 5b, barrel 6, flow dividing cone 7, second drainage groove 7a, cone part 7b, plug-in part 7c, support unit 8, third groove 8a, through hole 8b, guide hole 8c, support plate 8d, lower support plate 8e, connecting rod 8f, driving part 9, mold cavity A, vehicle lamp cover B. DETAILED DESCRIPTION

[0023] The utility model will be described further in detail below in combination with the drawings and specific embodiments.

[0024] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are only for the convenience of describing the utility model and simplifying the description, and are not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0025] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicative or suggestive of relative importance or implicitly indicative of the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0026] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] In the present application, unless otherwise expressly provided and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0028] As shown in Figures 1 to 5 The utility model discloses a car lamp cover injection mold, including support assembly, lower die seat 1, lower die 2, mould core 3, upper die seat 4, upper die 5, support assembly with lower die seat 1 cooperation, be equipped with first recess 1a on lower die seat 1, lower die 2 with first recess 1a cooperation, lower die 2 with lower die seat 1 fixed, lower die 2 with lower die seat 1 preferentially adopt screw fixed. Mould core 3 with lower die 2 cooperation, a part of mould core 3 is located in first recess 1a.

[0029] Upper die seat 4 is equipped with second recess 4a, and upper die 5 is matched with second recess 4a, and upper die 5 is fixed with upper die seat 4, and upper die 5 is preferentially fixed with upper die seat 4 by screw. The upper die 5 is provided with a cavity 5a, which is matched with the mold core 3, and a mold cavity A is formed between the mold core 3 and the lower die 2 and the upper die 5. The upper die seat 4 is provided with a first through hole 4b, and the upper die 5 is further provided with a second through hole 5b. The first through hole 4b and the second through hole 5b are used for passing through the thermoplastic plastic. After the thermoplastic plastic flows into the mold cavity A, it is cooled and formed into a car lamp cover B in the mold cavity A.

[0030] The utility model also includes a barrel 6 and a flow divider 7. The barrel 6 is matched with the first through hole 4b and the second through hole 5b, and the flow divider 7 is fixed with the lower die 2. The flow divider 7 is inserted into the barrel 6. The lower die 2 is provided with a first drainage groove 2a, which is matched with the mold cavity A and the flow divider 7 respectively. By setting the barrel 6 and the flow divider 7, on the one hand, the speed of the thermoplastic plastic entering the first drainage groove 2a is slowed down, avoiding the impact of the thermoplastic plastic on the thermoplastic plastic located in the mold cavity A. On the other hand, the flow divider 7 can disperse the thermoplastic plastic, making the thermoplastic plastic enter the first drainage groove 2a uniformly, thereby improving the uniformity of the thermoplastic plastic entering the mold cavity A and avoiding local material accumulation, thus improving the quality of the product.

[0031] The surface of the flow distribution cone 7 is provided with a second flow guide groove 7a which cooperates with the first flow guide groove 2a. The flow distribution cone 7 comprises a cone portion 7b and a plug-in portion 7c which are fixed together. The lower die 2 is provided with a mounting hole 2c which cooperates with the plug-in portion 7c. The second flow guide groove 7a is provided on the peripheral surface of the cone portion 7b and the axial end surface of the plug-in portion 7c. The diameter of the cone portion 7b is smaller than that of the plug-in portion 7c, and a step is formed between the cone portion 7b and the plug-in portion 7c. After the plug-in portion 7c is inserted into the mounting hole 2c, the plug-in portion 7c is fastened to the lower die 2 by means of screws.

[0032] The support assembly comprises a support unit 8 which is used to support the lower die holder 1. The support unit 8 is provided with a third recess 8a which cooperates with the mold core 3. The support unit 8 is also provided with a through hole 8b which cooperates with the third recess 8a. The support assembly further comprises a driving component 9 which is used to drive the mold core 3 to move up and down. The power output end of the driving component 9 passes through the through hole 8b and is connected to the mold core 3. The driving component 9 supports the mold core 3. The driving component 9 can be a hydraulic cylinder or an electric screw mechanism. After the thermoplastic plastic is cooled and formed into the vehicle lamp cover B in the mold cavity A, the lower end of the vehicle lamp cover B abuts against the lower die 2. When it is necessary to take out the vehicle lamp cover B, the upper die holder 4 is separated from the lower die holder 1 by means of a driving device (such as a hydraulic cylinder) which is fixed to the upper die holder 4. Then the mold core 3 is driven to move downward by the driving component 9, and a part of the mold core 3 falls into the third recess 8a. The vehicle lamp cover B is blocked by the lower die 2 and cannot move downward with the mold core 3, so that the vehicle lamp cover B is separated from the mold core 3, i.e. the vehicle lamp cover B is demolded.

[0033] In this embodiment, the lower die holder 1 is provided with a first assembly hole 1b, and the lower die 2 is provided with a second assembly hole 2b. The mold core 3 cooperates with the first assembly hole 1b and the second assembly hole 2b respectively. The mold core 3 is in sliding cooperation with the first assembly hole 1b and the second assembly hole 2b on the lower die holder 1. The mold core 3 is provided with a guide rod 3a, and the support unit 8 is provided with a guide hole 8c. The guide rod 3a is in clearance cooperation with the guide hole 8c. When the mold core 3 moves downward, the guide rod 3a can guide the mold core 3 to move linearly, so that the mold core 3 can reach the accurate position.

[0034] The support unit 8 comprises an upper support plate 8d, a lower support plate 8e and a connecting rod 8f. One end of the connecting rod 8f is connected to the upper support plate 8d, and the other end of the connecting rod 8f is connected to the lower support plate 8e. The driving component 9 is fixed to the lower support plate 8e. The third recess 8a and the through hole 8b are both provided on the upper support plate 8d. The upper support plate 8d is fastened to the lower die holder 1 and the lower die 2 as a whole.

[0035] The use process of the utility model is: the upper die holder 4 is combined with the lower die holder 1, the mold core 3 is driven by the driving part 9 and is lifted to the working position for forming the car lamp cover B, the mold cavity A is formed between the upper die 5 and the lower die 2 and the mold core 3. The thermoplastic plastic is poured into the open end of the first through hole 4b, the thermoplastic plastic flows into the interval space between the barrel 6 and the shunt cone 7 through the first through hole 4b, the thermoplastic plastic flows into the first drainage groove 2a after being dispersed by the shunt cone 7, the thermoplastic plastic flows into the mold cavity A from the first drainage groove 2a, the thermoplastic plastic is formed and cooled in the mold cavity A and the car lamp cover B is obtained. The upper die holder 4 is separated from the lower die holder 1 by the driver fixed with the upper die holder 4, then the mold core 3 is driven to descend by the driving part 9, a part of the mold core 3 falls into the third groove 8a, the car lamp cover B is blocked by the lower die 2 and does not descend with the mold core 3, so that the car lamp cover B is separated from the mold core 3, the car lamp cover B can be taken away. The car lamp cover B is repeatedly produced according to the above process.

Claims

1. A vehicle headlamp cover injection mold, comprising a support assembly, a lower mold base (1), a lower mold (2), a mold core (3), an upper mold base (4), an upper mold (5), the support assembly is matched with the lower mold base (1), the lower mold base (1) is provided with a first groove (1a), the lower mold (2) is matched with the first groove (1a), the lower mold (2) is fixed with the lower mold base (1), the mold core (3) is matched with the lower mold (2), the upper mold base (4) is provided with a second groove (4a), the upper mold (5) is matched with the second groove (4a), the upper mold (5) is fixed with the upper mold base (4), the upper mold (5) is provided with a cavity (5a), the cavity (5a) is matched with the mold core (3), and a mold cavity (A) is formed between the mold core (3) and the lower mold (2) and the upper mold (5) after the cavity (5a) is matched with the mold core (3), the upper mold base (4) is provided with a first through hole (4b), and the upper mold (5) is further provided with a second through hole (5b), characterized in that, The lower mold (2) is provided with a first flow guide groove (2a) which cooperates with the mold cavity (A) and the flow distribution cone (7) respectively.

2. The vehicle lamp bezel injection mold of claim 1, wherein, The surface of the flow distribution cone (7) is provided with a second flow guide groove (7a) which cooperates with the first flow guide groove (2a).

3. The vehicle lamp bezel injection mold of claim 2, wherein, The flow distribution cone (7) includes a cone part (7b) and a plug-in part (7c), the cone part (7b) is fixed with the plug-in part (7c), the lower mold (2) is provided with a mounting hole which cooperates with the plug-in part (7c), and the second flow guide groove (7a) is arranged on the peripheral surface of the cone part (7b) and the axial end surface of the plug-in part (7c).

4. The vehicle lamp bezel injection mold of claim 1, wherein, The support assembly includes a support unit (8), the support unit (8) is provided with a third recess (8a) which cooperates with the mold core (3), and the support unit (8) is further provided with a through hole (8b) which cooperates with the third recess (8a). The driving component (9) is used to drive the mold core (3) to ascend and descend, and the power output end of the driving component (9) is connected with the mold core (3) after penetrating through the through hole (8b).

5. The vehicle lamp bezel injection mold of claim 4, wherein, The lower mold base (1) is provided with a first assembly hole (1b), the lower mold (2) is provided with a second assembly hole (2b), and the mold core (3) cooperates with the first assembly hole (1b) and the second assembly hole (2b) respectively; the mold core (3) is provided with a guide rod (3a), and the support unit (8) is provided with a guide hole (8c), and the guide rod (3a) cooperates with the guide hole (8c) in a clearance fit.

6. The vehicle lamp bezel injection mold of claim 4, wherein, The support unit (8) includes an upper support plate (8d), a lower support plate (8e) and a connecting rod (8f), one end of the connecting rod (8f) is connected with the upper support plate (8d), the other end of the connecting rod (8f) is connected with the lower support plate (8e), and the driving component (9) is fixed with the lower support plate (8e).

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