Tail lamp base shell forming die

Abstract

The utility model relates to the technical field of injection mold production, in particular to a taillight base shell forming mold which comprises a fixed mold assembly, a movable mold assembly and an ejection assembly. The fixed mold assembly and the movable mold assembly are oppositely arranged, a product containing space is formed in the fixed mold assembly and the movable mold assembly, and the ejection assembly is located in the movable mold assembly and used for ejecting products. The ejection assembly comprises an inclined ejection block, a connecting rod and an inclined ejection seat, a blind hole is formed in the bottom of the inclined ejection block, one end of the connecting rod is inserted into the blind hole, and symmetrical grooves are formed in the other end of the connecting rod; the inclined ejector block is lower than the lowest glue position surface and is lower than half of the total thickness of the movable mold plate; according to the design, the pitched roof is divided into the pitched roof block, the connecting rod and the pitched roof seat, the problem that a traditional integral pitched roof block extends to the ejector plate is avoided, the longitudinal length of the pitched roof is shortened, the bending risk is reduced, the demolding stability and the deformation resistance are improved, meanwhile, space is vacated for key structures such as a cooling water channel, material consumption is reduced, and the production efficiency is improved. The manufacturing cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of injection mold production technology, and in particular to a taillight base housing molding mold. Background Technology

[0002] As an important functional component on the exterior of the vehicle body, the molding quality of the taillight base housing directly affects the assembly accuracy and sealing performance of the taillight. Currently, taillight base housings are mostly manufactured using injection molding. Due to the complex features such as undercuts and irregular grooves in their structure, mold design requires the use of inclined ejector or slider mechanisms for demolding.

[0003] Traditional angled ejectors use an integral design, and the angled ejector block needs to extend from the cavity position to the ejector plate, which significantly increases the length of the angled ejector. This not only requires high processing accuracy and consumes a lot of materials, but the extra-long angled ejector also occupies too much space in the moving mold plate and interferes with the cooling water channel layout.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] This utility model provides a taillight base housing molding die, thereby effectively solving the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a taillight base housing molding mold, comprising: a fixed mold assembly, a moving mold assembly, and an ejection assembly;

[0007] The fixed mold assembly and the moving mold assembly are arranged opposite to each other, forming an internal receiving space corresponding to the product. The ejection assembly is disposed inside the moving mold assembly and is used to eject the product after the mold is opened.

[0008] The ejection assembly includes an inclined ejector block, a connecting rod, and an inclined ejector seat; the bottom of the inclined ejector block is provided with a blind hole, one end of the connecting rod is inserted into the blind hole, and the other end has a symmetrical groove; the inclined ejector seat is provided with a sliding groove, and the groove slides in cooperation with the sliding groove; the inclined ejector block is lower than the lowest glue position surface, and the height of the inclined ejector block is less than half of the total thickness of the moving template.

[0009] Furthermore, the ejection assembly also includes a magnet block disposed at the top of the connecting rod, the magnet block being inserted into the blind hole for adsorbing the inclined top seat.

[0010] Furthermore, the ejection assembly also includes a pin disposed between the inclined ejector block and the connecting rod, the pin being inserted along the diameter direction of the connecting rod and parallel to the adhesive surface.

[0011] Furthermore, the connecting rod and the blind hole mating surface are provided with at least one positioning surface to prevent the connecting rod from rotating.

[0012] Furthermore, the connecting rod has a guide angle at its end near the blind hole.

[0013] Furthermore, the bottom surface of the inclined top block is 5mm to 15mm lower than the sealing surface.

[0014] Furthermore, the ejection assembly also includes a straightening block, which is embedded in the back of the moving template and has an oblique hole. The connecting rod passes through the oblique hole, and the gap between the oblique hole and the connecting rod is less than 0.05 mm, for straightening the connecting rod.

[0015] Furthermore, the inclined ejector block is provided with a primary vent and a secondary vent at the lowest position of the glue surface, and the secondary vent is directly led to the mold closing surface for discharge, which is used to draw out the gas at the end of the product filling.

[0016] Furthermore, the inclined block has a first inclined surface and a second inclined surface on the side away from the adhesive surface, from top to bottom, and the angle of the first inclined surface is at least two degrees larger than the angle of the second inclined surface.

[0017] Furthermore, both sides of the inclined top block relative to the adhesive surface are third inclined surfaces, causing the top of the inclined top block to gradually decrease in size from the top to the head.

[0018] The beneficial effects of this utility model are as follows: By splitting the inclined ejector into a split inclined ejector block, connecting rod and inclined ejector seat, this utility model avoids the traditional design of an integral inclined ejector block extending directly to the ejector plate, effectively shortening the longitudinal extension length of the inclined ejector block. The height of the inclined ejector block is limited to less than half of the total thickness of the moving mold plate, significantly reducing the risk of deflection caused by the long inclined ejector block, improving the structural stability and anti-deformation ability during demolding, freeing up layout space for key structures such as cooling water channels, which is conducive to optimizing the thermal balance design of the mold, and at the same time promoting the miniaturization of the mold.

[0019] Traditional ultra-long inclined ejector blocks require high machining precision and have low material utilization. In contrast, this solution adopts a split structure, with the inclined ejector block and the inclined ejector seat being machined separately. The connecting rod can be obtained by remapping the two ends of a standard push pin. After assembly, they slide together, which not only reduces the manufacturing difficulty of ultra-long inclined ejector blocks but also reduces material consumption, thereby improving production efficiency and reducing manufacturing costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the mold for forming the taillight base housing;

[0022] Figure 2 A schematic diagram of the ejector component (one embodiment);

[0023] Figure 3 This is a schematic diagram of the connecting rod (one embodiment);

[0024] Figure 4 A schematic diagram of the ejector component (another implementation);

[0025] Figure 5 This is a schematic diagram of the connecting rod (another embodiment);

[0026] Figure 6 This is a schematic diagram of the inclined block structure;

[0027] Figure 7 This is a schematic diagram of the straightening block.

[0028] Reference numerals: 1. Fixed mold assembly; 2. Moving mold assembly; 3. Ejector assembly; 31. Angled ejector block; 311. Blind hole; 312. Primary vent; 313. Secondary vent; 314. First inclined surface; 315. Second inclined surface; 316. Third inclined surface; 32. Connecting rod; 321. Groove; 322. Positioning surface; 323. Guide angle; 33. Angled ejector seat; 331. Slide groove; 34. Magnet block; 35. Pin; 36. Straightening block; 361. Angled hole;

[0029] 01. Products. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] like Figures 1 to 7 As shown: A taillight base housing molding die includes: a fixed mold assembly 1, a moving mold assembly 2, and an ejection assembly 3;

[0034] The fixed mold assembly 1 and the moving mold assembly 2 are arranged opposite to each other, forming an internal receiving space corresponding to the product 01. The ejection assembly 3 is arranged inside the moving mold assembly 2 and is used to eject the product 01 after the mold is opened.

[0035] The ejector assembly 3 includes an inclined ejector block 31, a connecting rod 32, and an inclined ejector seat 33. The bottom of the inclined ejector block 31 is provided with a blind hole 311. One end of the connecting rod 32 is inserted into the blind hole 311, and the other end has a symmetrical groove 321. The inclined ejector seat 33 is provided with a sliding groove 331, and the groove 321 and the sliding groove 331 are slidably engaged. The inclined ejector block 31 is lower than the sealing surface, and the height of the inclined ejector block 31 is less than half of the total thickness of the moving template. In this embodiment, the sliding groove 331 can be a T-shaped groove.

[0036] By splitting the inclined ejector into a separate inclined ejector block 31, connecting rod 32, and inclined ejector seat 33, the traditional design of an integral inclined ejector block extending directly to the ejector plate is avoided. This effectively shortens the longitudinal extension length of the inclined ejector block 31, and the height of the inclined ejector block 31 is limited to less than half of the total thickness of the moving mold plate. This significantly reduces the risk of deflection caused by the long inclined ejector block, improves the structural stability and anti-deformation ability during demolding, frees up layout space for key structures such as cooling water channels, is conducive to optimizing the thermal balance design of the mold, and promotes the miniaturization of the mold.

[0037] Traditional ultra-long inclined ejector blocks require high machining precision and have low material utilization. In contrast, this solution adopts a split structure, with the inclined ejector block 31 and the inclined ejector seat 33 being machined separately. The connecting rod 32 can be obtained by remapping the two ends of the standard push pin. After assembly, they slide together, which not only reduces the manufacturing difficulty of the ultra-long inclined ejector block 31, but also reduces material consumption, thereby improving production efficiency and reducing manufacturing costs.

[0038] By reducing the length of the inclined ejector block 31, the risk of mold damage caused by deformation or breakage of the excessively long inclined ejector block is reduced, the durability of the mold is improved, and maintenance and replacement costs are reduced. The shortened inclined ejector block 31 and connecting rod 32 reduce the amount of high-precision steel used. At the same time, the lightweight design of the split structure reduces the motion inertia of the ejection system, which helps to save energy consumption of the injection molding machine.

[0039] When the ejector plate is ejected, it drives the inclined ejector seat 33 and the connecting rod 32 to move upward, and simultaneously drives the inclined ejector block 31 to move obliquely upward. As the inclined ejector block 31 is ejected, it retracts to complete the undercut demolding. At this time, it is in the mold open state. After the product 01 is taken out by the robot, the kinetic energy component moves closer to the fixed mold component 1. The fixed mold component 1 squeezes the ejected inclined ejector block 31 back to the initial position. At this time, it is in the mold closed state, and the next injection molding of product 01 is carried out. This cycle is repeated to complete the injection molding production of product 01.

[0040] However, during production, it was discovered that the angled ejector block 31 was at risk of detaching during the mold opening process. The detached angled ejector block 31 might cause the mold to be pressed. Therefore, the following improvements were made:

[0041] like Figure 2 , 3 As shown, one specific embodiment of the connection between the inclined ejector block 31 and the connecting rod 32 is as follows: the ejection assembly 3 also includes a magnet block 34 disposed on the top of the connecting rod 32. The magnet block 34 is inserted into the blind hole 311 for adsorbing the inclined ejector seat 33. Specifically, the connecting rod 32 and the magnet block 34 can be bonded together or connected in other ways. Traditionally, the inclined ejector block 31 may fall off due to vibration, inertia, or impact force during ejection, affecting production stability. The adsorption effect of the magnet block 34 ensures that the inclined ejector block 31 always remains in the correct position during the mold opening process, preventing it from accidentally falling off. This effectively reduces mold damage or product defects caused by the detachment of the inclined ejector block 31. At the same time, it facilitates targeted maintenance of the inclined ejector block 31 directly from the parting surface on the machine. For example, if there is an incorrect undercut on product 01, the mold does not need to be removed from the injection molding machine. The inclined ejector block 31 of that part can be directly removed from the parting surface for inspection and replacement, resulting in high maintenance efficiency.

[0042] like Figure 4 , 5As shown, another specific embodiment of the connection between the inclined ejector block 31 and the connecting rod 32 is as follows: the ejector assembly 3 also includes a pin 35 disposed between the inclined ejector block 31 and the connecting rod 32. The pin 35 is inserted along the diameter direction of the connecting rod 32 and is parallel to the glue surface to avoid the glue surface. Specifically, by inserting the pin 35 along the diameter direction of the connecting rod 32 and being parallel to the glue surface, the inclined ejector block 31 and the connecting rod 32 are fixedly connected. Even during the ejection process, the inclined ejector block 31 will not fall off due to inertia or external force, reducing the risk of mold damage or affecting molding accuracy, reducing the risk of mold pressing, and increasing production safety. At the same time, when the ejector plate returns to its original position, it pulls the connecting block and the inclined ejector block 31 back to their original position, giving the inclined ejector block 31 a pulling force to ensure that the inclined ejector block 31 can always accurately reset, improving the stability of the mold.

[0043] As a preferred embodiment, at least one positioning surface 322 is provided on the mating surface of the connecting rod 32 and the blind hole 311 to prevent the connecting rod 32 from rotating. Since the positioning surface 322 provides a clear installation direction, the operator does not need to adjust the angle of the connecting rod 32 during the mold assembly process. The quick installation of the positioning pin helps to reduce assembly time and improve production efficiency.

[0044] Among them, continue to refer to Figure 5 The end of the connecting rod 32 near the blind hole 311 is provided with a guide angle 323. The design of the guide angle 323 can guide the connecting rod 32 to be smoothly inserted into the blind hole 311, reduce the alignment difficulty in the assembly process, and improve the assembly efficiency. Specifically, the guide angle 323 can be a cone angle or a rounded angle at the end, both of which are within the protection scope of this application.

[0045] In this embodiment, the bottom surface of the inclined ejector block 31 is 5mm to 15mm lower than the sealing surface. The sealing surface with sufficient rigidity is beneficial for sealing the bottom surface of the inclined ejector block 31. At the same time, the depth of the inclined ejector block 31 is kept as short as possible to provide space for the design of water channels or other structures in the moving mold, which helps the mold to heat up and cool down quickly, reduces the production cycle, and improves production efficiency.

[0046] As a preferred embodiment of the above, such as Figure 7 As shown, the ejection assembly 3 also includes a straightening block 36, which is embedded in the back of the moving template. The straightening block 36 has an inclined hole 361, through which the connecting rod 32 passes. The gap between the inclined hole 361 and the connecting rod 32 is less than 0.05mm, which is used to straighten the connecting rod 32. Specifically, since the inclined ejection mechanism needs to move repeatedly during the demolding process, the connecting rod 32 may bend or even break due to long-term stress. The design of the straightening block 36 ensures that the connecting rod 32 is always in the correct direction of stress, effectively preventing bending or breakage and increasing the service life of the connecting rod 32.

[0047] In this embodiment, the inclined ejector block 31 is provided with a primary vent 312 and a secondary vent 313 at the lowest position of the glue surface. The secondary vent 313 is directly led to the mold closing surface for discharge, which is used to draw out the gas at the end of the filling of product 01. Specifically, during the injection molding process, when the molten plastic fills the mold cavity, air is easily trapped in the end area. If it cannot be discharged in time, it will cause defects such as bubbles, scorching, and short shots to form inside or on the surface of product 01. Through the dual venting design of primary vent 312 and secondary vent 313 at the end of the filling, the gas is ensured to be discharged smoothly, reducing defects in product 01 and improving molding quality.

[0048] The length of the first-stage exhaust 312 is 2mm to 3mm to ensure the sealing surface, while minimizing the path of the first-stage exhaust 312 to ensure smooth exhaust.

[0049] Among them, such as Figure 6 As shown, the side of the inclined ejector block 31 away from the glue surface has a first inclined surface 314 and a second inclined surface 315 from top to bottom. The angle of the first inclined surface 314 is at least two degrees larger than the angle of the second inclined surface 315. Specifically, if the angle of the inclined ejector is 4°, then the angle of the second inclined surface 315 is 4° and the angle of the first inclined surface 314 is 6°. Because the injection molding temperature is relatively high, the inclined ejector block 31 expands due to heat. The angle of the first inclined surface 314 near the opening is relatively large to prevent the inclined ejector from getting stuck, maintain smooth sliding, and improve the stability of demolding.

[0050] As a preferred embodiment, both sides of the inclined top block 31 relative to the glue position surface are third inclined surfaces 316, so that the top of the inclined top block 31 gradually decreases from the head. Specifically, the angle of the third inclined surface 316 is 0.5° to 1°. The third inclined surfaces 316 on both sides provide smoother guidance, so that the inclined top block 31 can slide into its original position more smoothly during the return process, reduce jamming, and improve production efficiency.

[0051] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A taillight base housing molding die, characterized in that, include: Fixed mold assembly, moving mold assembly, and ejection assembly; The fixed mold assembly and the moving mold assembly are arranged opposite to each other, forming an internal receiving space corresponding to the product. The ejection assembly is disposed inside the moving mold assembly and is used to eject the product after the mold is opened. The ejection assembly includes an inclined ejector block, a connecting rod, and an inclined ejector seat; the bottom of the inclined ejector block is provided with a blind hole, one end of the connecting rod is inserted into the blind hole, and the other end has a symmetrical groove; the inclined ejector seat is provided with a sliding groove, and the groove slides in cooperation with the sliding groove; the inclined ejector block is lower than the lowest glue position surface, and the height of the inclined ejector block is less than half of the total thickness of the moving template.

2. The taillight base housing forming mold according to claim 1, characterized in that, The ejection assembly also includes a magnet block disposed at the top of the connecting rod, the magnet block being inserted into the blind hole for adsorbing the inclined top seat.

3. The taillight base housing molding die according to claim 1, characterized in that, The ejection assembly also includes a pin disposed between the inclined ejector block and the connecting rod, the pin being inserted along the diameter direction of the connecting rod and parallel to the adhesive surface.

4. The taillight base housing forming mold according to claim 3, characterized in that, The connecting rod and the blind hole mating surface are provided with at least one positioning surface to prevent the connecting rod from rotating.

5. The taillight base housing molding die according to claim 1, characterized in that, The end of the connecting rod near the blind hole is provided with a guide angle.

6. The taillight base housing forming mold according to claim 1, characterized in that, The bottom surface of the inclined top block is 5mm to 15mm lower than the sealing surface.

7. The taillight base housing forming mold according to claim 1, characterized in that, The ejection assembly also includes a straightening block, which is embedded in the back of the moving template. The straightening block has an oblique hole, through which the connecting rod passes. The gap between the oblique hole and the connecting rod is less than 0.05 mm, which is used to straighten the connecting rod.

8. The taillight base housing forming mold according to claim 1, characterized in that, The inclined ejector block is located at the lowest position of the glue surface and is equipped with a primary vent and a secondary vent in sequence. The secondary vent is directly led to the mold closing surface for discharge, which is used to draw out the gas at the end of the product filling.

9. The taillight base housing forming mold according to claim 1, characterized in that, The inclined block has a first inclined surface and a second inclined surface on the side away from the glue surface from top to bottom, and the angle of the first inclined surface is at least two degrees larger than the angle of the second inclined surface.

10. The taillight base housing molding die according to claim 1, characterized in that, The two sides of the inclined top block relative to the glue surface are both third inclined surfaces, so that the top of the inclined top block gradually decreases from the head.

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