Length-adjustable automobile through tail lamp injection molding mold

Abstract

The utility model belongs to mould technical field relates to a length adjustable car penetrates tail lamp injection moulding mould. The utility model discloses, including car penetrates tail lamp forming lower mould and car penetrates tail lamp forming upper mould, be equipped with injection moulding part on car penetrates tail lamp forming upper mould top, be equipped with the upper forming surface of plastic piece on car penetrates tail lamp forming upper mould bottom, be equipped with the lower forming surface of plastic piece on car penetrates tail lamp forming lower mould, the position of upper forming surface of plastic piece and lower forming surface of plastic piece corresponds and the shape is matched, be equipped with the detachable tail lamp side part of inlaying of car penetrates tail lamp forming lower mould. The utility model discloses in the use process, adjust the forming space through the detachable auxiliary forming inlay block, need not to develop mould alone for different length tail lamp, can reduce mould development and maintenance cost, avoid the space occupation of idle mould simultaneously, realize one mould multiple use.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to an injection molding mold for an adjustable length automotive through-type taillight. Background Technology

[0002] This invention includes a fixed injection mold and a moving injection mold for taillights, with several upper molding inserts within the fixed mold. During the injection molding process, the fixed and moving molds are brought close together, allowing the upper and lower molding inserts to abut and engage. A bottom-side auxiliary molding cooling component further assists in shaping the bottom side of the plastic part. Molten material is injected into the cavity through the injection molded part. In traditional automotive taillight production, each taillight length requires a separate injection mold. This results in long mold development cycles, hindering rapid response to vehicle model iterations. Furthermore, the design, manufacturing, and maintenance costs of multiple molds are extremely high (a single mold typically costs tens to hundreds of thousands of yuan), and idle molds occupy production space, further increasing operating costs. Additionally, the fixed molding structure of traditional molds necessitates replacing the entire mold if the taillight length needs adjustment, resulting in poor production flexibility and an inability to meet the demands of small-batch, multi-specification production. To address the aforementioned issues, this application proposes an injection molding mold for an adjustable-length through-type taillight. Through a modular, detachable side insert design, a single mold can be used to mold taillights of various lengths, significantly reducing production costs and improving production flexibility.

[0003] To overcome the shortcomings of existing technologies, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses a multi-ejection mechanism for a through-type taillight injection mold [Application No.: 202420568929.3], which includes a taillight injection mold and a taillight injection moving mold. The taillight injection mold has several upper molding inserts. In this invention, during the injection molding process, the taillight injection mold and the taillight injection moving mold are brought close to each other, so that the upper molding inserts and lower molding inserts abut and cooperate. Then, a complete cavity is formed by the cooperation of the bottom auxiliary molding cooling component. The bottom auxiliary molding cooling component is used to assist in molding the bottom side structure of the plastic part. Molten material is injected into the cavity through the injection mold. However, this solution is still difficult to produce taillight plastic parts of different lengths during injection molding, making it difficult to achieve multiple uses of one mold and resulting in high production costs. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing an injection molding mold for an adjustable-length through-type taillight for automobiles.

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

[0006] An adjustable-length injection molding die for a car through-type taillight includes a lower mold and an upper mold. The upper mold has an injection molded part on top and an upper molding surface for the part at its bottom. The lower mold has a lower molding surface for the part, with the upper and lower molding surfaces corresponding in position and shape. The lower mold contains a detachable taillight side insert, also corresponding in position and shape to the lower molding surface. A main ejector and a side ejector are located below the lower mold, with the side ejector positioned below the detachable taillight side insert.

[0007] In the aforementioned adjustable length automotive through-type taillight injection molding mold, the detachable taillight side insert includes two auxiliary molding blocks disposed on the lower mold of the automotive through-type taillight molding, and the inner side of the auxiliary molding block has a taillight side lower groove molding protrusion.

[0008] In the aforementioned adjustable-length automotive through-type taillight injection molding mold, the auxiliary molding insert is connected to the lower mold of the automotive through-type taillight through a fixed connector.

[0009] In the above-mentioned adjustable length automotive through-taillight injection molding mold, the fixing connector includes a screw rod, and the lower mold for forming the automotive through-taillight is provided with a screw hole groove, through which the screw rod passes and engages with the screw hole groove.

[0010] In the above-mentioned adjustable length automotive through-taillight injection molding mold, the lower mold of the automotive through-taillight has an insert placement groove, which is connected to the lower molding surface of the plastic part.

[0011] In the above-mentioned adjustable length automotive through-taillight injection molding mold, the side straight pusher includes a push rod fixing slide plate disposed below the automotive through-taillight molding lower mold, and the push rod fixing slide plate is provided with a plurality of side top plates extending into the insert placement groove.

[0012] In the aforementioned injection molding mold for an adjustable length automotive through-type taillight, the side top plate and the push rod fixing slide plate are connected by a first push rod.

[0013] In the above-mentioned adjustable length automotive through-taillight injection molding mold, the main body straight pusher includes several main body top plates disposed above the push rod fixing slide plate, and the main body top plates extend into the lower molding surface of the plastic part.

[0014] In the aforementioned injection molding mold for an adjustable length automotive through-type taillight, the main body top plate and the push rod fixing slide plate are connected by a second push rod.

[0015] In the above-mentioned adjustable length automotive through-taillight injection molding mold, the injection molded part includes an injection main board disposed above the upper mold of the automotive through-taillight molding.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. In the process of use, the molding space can be adjusted by the detachable auxiliary molding insert, eliminating the need to develop molds separately for taillights of different lengths, reducing mold development and maintenance costs, and avoiding idle molds occupying space, thus achieving multiple uses for one mold.

[0018] 2. The present invention only requires disassembling the screw rod to replace the auxiliary molding insert, which is simple to operate and can quickly switch the production of taillights of different lengths, thus improving production flexibility.

[0019] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0022] Figure 3 This is a partial structural schematic diagram of the present invention.

[0023] Figure 4 This is a partial structural schematic diagram of another aspect of this utility model.

[0024] Figure 5 This is a schematic diagram of the upper mold for forming the taillights of a car.

[0025] In the diagram: 1. Lower mold for forming a through-type taillight; 2. Upper mold for forming a through-type taillight; 3. Injection molded part; 4. Upper molding surface of the plastic part; 5. Lower molding surface of the plastic part; 6. Detachable taillight side insert; 7. Main body ejector; 8. Side ejector; 9. Auxiliary molding insert; 10. Taillight side lower groove molding protrusion; 11. Fixing connector; 12. Screw rod; 12. Screw hole groove; 13. Insert placement groove; 14. Ejector rod fixing slide plate; 15. Side top plate; 16. First ejector rod; 17. Main body top plate; 18. Second ejector rod; 19. Injection main plate. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] like Figure 1-5As shown, an adjustable-length automotive through-type taillight injection molding mold includes a lower mold 1 and an upper mold 2 for forming the through-type taillight. An injection molded part 3 is provided above the upper mold 2, and an upper molding surface 4 is provided at the bottom of the upper mold 2. A lower molding surface 5 is provided on the lower mold 1. The upper molding surface 4 and the lower molding surface 5 are positioned and matched in shape. A detachable taillight side insert 6 is provided inside the lower mold 1. The detachable taillight side insert 6 is positioned and matched in shape with the lower molding surface 5. A main ejector 7 and a side ejector 8 are provided below the lower mold 1, with the side ejector 8 located below the detachable taillight side insert 6.

[0028] In this embodiment, during the injection molding process, in the mold-closed state, the upper mold 2 for forming the through-taillight moves downwards vertically until the upper molding surface 4 of the plastic part and the lower molding surface 5 of the plastic part are completely fitted together, forming a closed basic molding cavity for the taillight body. The detachable taillight side insert 6 is embedded in the lower mold 1 for forming the through-taillight, and its inner sidewall is tightly connected to the side of the lower molding surface 5 of the plastic part, filling the side gap of the basic molding cavity and forming a complete molding cavity of fixed length. The discharge end of the injection molded part 3 is connected to the flow channel inside the upper mold 2 for forming the through-taillight, and the end of the flow channel extends to the upper molding surface 4 of the plastic part and communicates with the molding cavity, ensuring that the molten plastic can be injected smoothly. In the demolding state, the main ejector 7 extends upwards to the lower molding surface 5 of the plastic part, and the side ejector 8 extends upwards to below the detachable taillight side insert 6. The two can push the plastic part upwards simultaneously, and the upper molding surface 4 of the plastic part and the lower molding surface 5 of the plastic part are connected. The lower molding surface 5 mates to achieve precise molding of the taillight body shape, ensuring the consistency of the taillight's basic dimensions. The detachable taillight side insert 6 can be flexibly disassembled and assembled, providing a basis for adjusting the molding cavity length. The main body straight ejector 7 and the side straight ejector 8 mate to achieve stable demolding of the plastic part, avoiding damage to the plastic part. The overall structure can meet the molding requirements of taillights of different lengths without replacing the entire mold, significantly reducing equipment investment costs. It breaks through the design limitations of traditional molds where the molding cavity and mold body are integrally molded and cannot be adjusted. The side molding structure is designed as a detachable taillight side insert 6. Through the modular design of "retaining the main body molding surface (upper molding surface 4 and lower molding surface 5 of the plastic part) and replacing the side insert (detachable taillight side insert 6)," it is the first time that one mold can adapt to taillights of multiple lengths, solving the problems of high cost and poor flexibility caused by the traditional mold of "one mold per taillight."

[0029] Combination Figure 1-5 As shown, the detachable taillight side insert 6 includes two auxiliary molding inserts 9 disposed on the lower mold 1 for forming the through taillight of the car. The inner side of the auxiliary molding insert 9 has a taillight side lower groove forming protrusion 10.

[0030] Specifically, two auxiliary molding inserts 9 are respectively embedded on both sides of the top of the lower mold 1 for forming the through-type taillight. The outer wall of the auxiliary molding insert 9 is tightly fitted with the inner wall of the lower mold 1 for forming the through-type taillight to ensure stable installation. The top of the auxiliary molding insert 9 is flush with the top of the lower molding surface 5 of the plastic part to avoid steps in the molding cavity that could cause surface defects in the plastic part. The taillight side groove forming protrusion 10 on the inner side of the auxiliary molding insert 9 extends into the molding cavity, and its outer wall is correspondingly fitted with the inner wall of the upper molding surface 4 of the plastic part. The two work together to form the groove forming space on the side of the taillight. To ensure that the molten plastic can form a complete groove structure after cooling, the auxiliary molding insert 9, as the core component of the detachable taillight side insert 6, fills the side space of the molding cavity and limits the initial length of the taillight. On the other hand, it achieves precise molding of the taillight side groove through the taillight side groove molding protrusion 10, ensuring the optical performance of the taillight (the groove is a light-transmitting structure, and the dimensional accuracy directly affects the light illumination effect). When replacing the auxiliary molding insert 9 of different lengths, the taillight length and the side groove length can be adjusted simultaneously without the need to design a separate groove molding component, simplifying the operation process.

[0031] The auxiliary molding insert 9 is connected to the lower mold 1 for forming the through taillight of the car through the car through the fixed connector 11. The fixed connector 11 includes a screw rod 12. The lower mold 1 for forming the through taillight of the car through the car through the car through the screw hole groove 122 is provided. The screw rod 12 passes through and is engaged with the screw hole groove 122.

[0032] In this embodiment, the fixing connector 11 is specifically a screw rod 12. The shank of the screw rod 12 is machined with external threads, and the head is a hexagonal structure (for easy wrench operation). The lower mold 1 for forming the through-taillight of the car is machined with a threaded groove 122 that matches the screw rod 12. The inner wall of the threaded groove 122 is machined with internal threads, and the specifications (pitch and thread profile) of the internal threads are completely consistent with the external threads of the screw rod 12. When installing the auxiliary forming insert 9, the shank of the screw rod 12 is inserted from top to bottom through the mounting through hole of the auxiliary forming insert 9 until the end of the shank enters the threaded groove 122 of the lower mold 1 for forming the through-taillight of the car. By rotating the head of the screw rod 12 with a wrench, the external threads of the screw rod 12 and the internal threads of the threaded groove 122 are aligned. The screw rod 12 is gradually screwed in until its head is tightly fitted against the top surface of the auxiliary molding insert 9, at which point the auxiliary molding insert 9 is completely fixed. For disassembly, the screw rod 12 is rotated in the opposite direction to gradually disengage the threads. Once the screw rod 12 is completely removed, the auxiliary molding insert 9 can be removed. The threaded connection has self-locking properties, ensuring that the screw rod 12 does not loosen under injection pressure, thus guaranteeing the installation stability of the auxiliary molding insert 9. Simultaneously, the threaded connection has high fitting precision, allowing for fine-tuning of the height of the auxiliary molding insert 9 by adjusting the screwing depth, ensuring that its top is flush with the lower molding surface 5 of the plastic part. Furthermore, the screw rod 12 is a standardized part with low procurement costs; if wear or damage occurs, it can be quickly replaced, reducing mold maintenance costs.

[0033] The lower mold 1 for forming the through taillight of the car has a block placement groove 13, which is connected to the lower forming surface 5 of the plastic part.

[0034] In this embodiment, after the auxiliary molding insert 9 is embedded in the insert placement groove 13, the outer wall and bottom of the insert are completely fitted with the inner wall and bottom of the insert placement groove 13, with only the lower groove forming protrusion 10 on the inner side of the taillight extending into the molding cavity; the inner wall of the insert placement groove 13 provides radial positioning for the auxiliary molding insert 9, preventing the insert from shifting in the horizontal direction; at the same time, the bottom of the insert placement groove 13 provides axial support for the auxiliary molding insert 9, which, together with the top of the screw rod 12, forms a stable installation structure of "fixed at the top and bottom + positioned around the perimeter".

[0035] Combination Figure 3-4 As shown, the side straight top part 8 includes a top rod fixing slide plate 14 disposed below the lower mold 1 for forming the through taillight of the car, and a plurality of side top plates 15 extending into the insert placement groove 13 are provided above the top rod fixing slide plate 14.

[0036] In this embodiment, the bottom of the lower mold 1 for forming the taillight and the bottom of the insert placement groove 13 are both machined with guide holes that match the side top plate 15. The diameter of the guide holes is 0.01-0.02mm larger than that of the side top plate 15 (to ensure that the top plate can be raised and lowered smoothly without shaking). The upper end of the side top plate 15 extends into the insert placement groove 13 after passing through the guide holes, and the upper end face of the side top plate 15 is in close contact with the bottom of the auxiliary forming insert 9. The lower part of the ejector rod fixing slide plate 14 is connected to the ejection mechanism (such as hydraulic cylinder or air cylinder) of the injection molding machine. The ejection mechanism drives the ejector rod fixing slide plate 14 to rise and fall in the vertical direction, and simultaneously drives the side top plate 15 to rise and fall.

[0037] The side top plate 15 is connected to the top rod fixing slide plate 14 by the first top rod 16.

[0038] In this embodiment, the first top rod 16 is used to connect and fix the side top plate 15.

[0039] Combination Figure 1-5 As shown, the main body straight push member 7 includes several main body top plates 17 disposed above the push rod fixing slide plate 14, and the main body top plates 17 extend into the lower molding surface 5 of the plastic part.

[0040] In this embodiment, the bottom of the lower mold 1 for forming the taillight and the bottom of the insert placement groove 13 are both machined with guide holes that match the main body top plate 17. The diameter of the guide holes is 0.01-0.02mm larger than that of the main body top plate 17 (to ensure that the top plate can be raised and lowered smoothly without shaking). The upper end of the main body top plate 17 extends into the insert placement groove 13 after passing through the guide holes, and the upper end surface of the main body top plate 17 is in close contact with the bottom of the auxiliary forming insert 9. The lower part of the ejector rod fixing slide plate 14 is connected to the ejection mechanism (such as hydraulic cylinder or air cylinder) of the injection molding machine. The ejection mechanism drives the ejector rod fixing slide plate 14 to rise and fall in the vertical direction, and simultaneously drives the main body top plate 17 to rise and fall.

[0041] Combination Figure 1-5 As shown, the main top plate 17 and the top rod fixing slide plate 14 are connected by a second top rod 18.

[0042] In this embodiment, the second top rod 18 is used to connect and fix the main body top plate 17.

[0043] Combination Figure 1-5 As shown, the injection molded part 3 includes an injection main board 19 disposed above the upper mold 2 for forming the through taillight of an automobile.

[0044] In this embodiment, the injection molding main board 19 is used to deliver molten material into the mold cavity to complete the injection molding.

[0045] The working principle of this utility model is as follows:

[0046] Before injection molding, two auxiliary molding inserts 9 are embedded into the insert placement groove 13 of the lower mold 1 and fixed by screw rods 12. At this time, the taillight side lower groove molding protrusion 10 on the inner side of the insert 9 mates with the lower molding surface 5 of the plastic part to form a molding cavity of standard length. The injection molding machine is started, which drives the upper mold 2 to move downward, so that the upper molding surface 4 of the plastic part is tightly fitted with the lower molding surface 5 of the plastic part and the auxiliary molding inserts 9, thus completing the mold closing. The injection molding machine injects molten plastic into the molding cavity through the injection main plate 19. After the plastic is filled in the cavity, it is held under pressure and cooled to solidify. After cooling, the injection molding machine drives the upper mold 2 to move upward, thus completing the mold opening. The ejection mechanism drives the ejector pin fixing slide plate 14 to move upward, and the slide plate 14 simultaneously drives the side ejector plate of the side straight ejector 8. 15 (via the first ejector rod 16) and the main body ejector plate 17 (via the second ejector rod 18) push upwards, the side ejector plate 15 pushes the side of the plastic part in contact with the insert 9, and the main body ejector plate 17 pushes the main body of the plastic part. The two exert force simultaneously to push the plastic part out of the molding surface of the lower mold 1 and the insert 9. The standard length taillight plastic part after molding is removed manually or by a robotic arm. The ejector rod fixing slide plate 14 is reset downwards, and the side ejector plate 15 and the main body ejector plate 17 are retracted to their initial positions to prepare for the next injection molding. If it is necessary to produce a taillight with an extended length, the injection molding machine is stopped first, the screw rod 12 is unscrewed from the screw hole groove 122 of the lower mold 1, and the two auxiliary molding inserts 9 are removed. At this time, the insert placement groove 13 forms an empty space, which increases the length of the molding cavity.

[0047] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.

[0048] Although this article frequently uses terms such as 1. lower mold for automotive through-type taillights, 2. upper mold for automotive through-type taillights, 3. injection molded part, 4. upper molding surface of the plastic part, 5. lower molding surface of the plastic part, 6. detachable taillight side insert, 7. main body ejector, 8. side ejector, 9. auxiliary molding insert, 10. taillight side lower groove molding protrusion, 11. fixing connector, 12. screw rod, 12. screw hole groove, 13. insert placement groove, 14. ejector rod fixing slide plate, 15. side top plate, 16. first ejector rod, 17. main body top plate, 18. second ejector rod, and 19. injection molded main plate, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. An injection molding die for an adjustable-length through-type taillight, comprising a lower mold (1) for forming the through-type taillight and an upper mold (2) for forming the through-type taillight, characterized in that, The upper mold (2) for forming the through-taillight of the car is provided with an injection molded part (3), the bottom of the upper mold (2) for forming the through-taillight of the car is provided with an upper molding surface (4) for a plastic part, the lower mold (1) for forming the through-taillight of the car is provided with a lower molding surface (5) for a plastic part, the upper molding surface (4) for a plastic part and the lower molding surface (5) for a plastic part are positioned and matched in shape, the lower mold (1) for forming the through-taillight of the car is provided with a detachable taillight side insert (6), the detachable taillight side insert (6) for a plastic part is positioned and matched in shape, the lower mold (1) for forming the through-taillight of the car is provided with a main body straight ejector (7) and a side straight ejector (8) below the lower mold (1) for forming the through-taillight of the car, the side straight ejector (8) is located below the detachable taillight side insert (6).

2. The adjustable-length automotive through-type taillight injection molding die according to claim 1, characterized in that, The detachable taillight side insert (6) includes two auxiliary molding inserts (9) disposed on the lower mold (1) for forming the through taillight of the car. The auxiliary molding inserts (9) have a taillight side lower groove forming protrusion (10) on the inner side.

3. The adjustable-length automotive through-type taillight injection molding die according to claim 2, characterized in that, The auxiliary molding insert (9) is connected to the lower mold (1) for forming the through taillight of the car by a fixed connector (11).

4. The adjustable-length automotive through-type taillight injection molding die according to claim 3, characterized in that, The fixed connector (11) includes a screw rod (12), and the lower mold (1) for forming the through taillight of the car is provided with a screw hole groove (122). The screw rod (12) passes through and is engaged with the screw hole groove (122).

5. The adjustable-length automotive through-type taillight injection molding die according to claim 4, characterized in that, The lower mold (1) for forming the through taillight of the car has a slot (13) for mounting the insert, which is connected to the lower forming surface (5) of the plastic part.

6. The injection molding mold for an adjustable-length through-type taillight for automobiles according to claim 5, characterized in that, The side straight top part (8) includes a top rod fixing slide plate (14) disposed below the lower mold (1) for forming the through taillight of the car. The top rod fixing slide plate (14) is provided with a plurality of side top plates (15) extending into the insert placement groove (13).

7. The injection molding mold for an adjustable-length through-type taillight for automobiles according to claim 6, characterized in that, The side top plate (15) is connected to the top rod fixing slide plate (14) by a first top rod (16).

8. The injection molding mold for an adjustable-length through-type taillight for automobiles according to claim 6 or 7, characterized in that, The main body straight top member (7) includes several main body top plates (17) disposed above the top rod fixing slide plate (14), and the main body top plates (17) extend into the lower molding surface (5) of the plastic part.

9. The injection molding mold for an adjustable-length through-type taillight as described in claim 8, characterized in that, The main top plate (17) and the top rod fixing slide plate (14) are connected by a second top rod (18).

10. The injection molding mold for an adjustable-length through-type taillight for automobiles according to claim 1, characterized in that, The injection molded part (3) includes an injection main board (19) disposed above the upper mold (2) for forming the through taillight of an automobile.

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