A type of injection mold for car headlight base

Abstract

This utility model belongs to the field of automotive parts manufacturing technology and discloses a headlight base injection mold, including a base, a lower mold base disposed on the base, a top plate, an injection port opened on the top plate, and an upper mold base disposed on the top plate. Two sets of molding molds are slidably disposed between the upper mold base and the lower mold base. Each molding mold includes a lower module and an upper module slidably disposed above the lower module. The upper module and the lower module are used to form an injection cavity. The two molding molds are respectively disposed at both ends of the upper mold base. The headlight base injection mold provided by this utility model, through the linkage design of the two sets of molding molds and moving components, combined with the automatic switching mechanism of motor drive, limit block and screw, realizes rapid alternation of injection station coverage, and can complete mold core switching without stopping the machine, significantly improving processing efficiency and meeting the needs of continuous production.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, and more specifically, to an injection mold for a headlight base. Background Technology

[0002] As a core piece of equipment for the mass production of automotive parts, the technological evolution of injection molds has always revolved around improving precision and optimizing efficiency. As complex plastic parts such as headlight bases iterate towards integration and thin-walled construction, multi-station alternating molding technology has gradually become the mainstream solution in the industry. This type of mold, by configuring multiple independent molding units and utilizing an automated control system, achieves continuous injection and demolding, which can theoretically significantly shorten the production cycle of a single part and meet the process requirements of modern automotive manufacturing for high cycle time and low energy consumption.

[0003] However, in the actual operation of traditional multi-station injection molds, due to the lack of efficient linkage design between the positioning and drive mechanism of the mold core assembly, the switching process often requires manual or semi-automatic adjustment after stopping the machine, resulting in frequent interruptions in the production process. Such manual intervention not only increases the complexity of operation, but also causes the risk of misalignment between the injection port and the mold core cavity due to insufficient repeatability positioning accuracy, making it difficult to fully release the theoretically efficient multi-station advantages and seriously restricting the improvement of overall processing efficiency.

[0004] In view of this, we propose an injection mold for a car headlight base. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this utility model is to provide an injection mold for a car headlight base, so as to solve the problem that the mold core switching of traditional injection molds relies on manual intervention and machine stop adjustment, resulting in low processing efficiency and difficulty in ensuring repeatability and positioning accuracy.

[0007] 2. Technical Solution

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a car headlight base injection mold, including a base, a lower mold base disposed on the base, a top plate, an injection port opened on the top plate, and an upper mold base disposed on the top plate. Two sets of molding molds are slidably disposed between the upper mold base and the lower mold base. Each molding mold includes a lower module and an upper module slidably disposed above the lower module. The upper module and the lower module are used to form an injection cavity. The two molding molds are respectively disposed at both ends of the upper mold base. The upper mold base is provided with two moving components for driving the two molding molds to move respectively. The two moving components are mirror-displayed at both ends of the upper mold base. The upper mold base is provided with a switching component for switching the working state of the moving components.

[0009] Preferably, the moving component includes a fixed rod fixedly connected to the upper module, a connecting plate fixedly connected to the fixed rod, and a limiting rod fixedly connected to the upper mold base. A hollow sleeve rod is fixedly connected to the connecting plate, and the limiting rod passes through the connecting plate. Both ends of the switching component are provided with screws rotatably connected to the upper mold base. Screws are threadedly connected to the screws via ball screw pairs, and the two screws are fixedly connected to the two sleeve rods respectively. A connecting rod is fixedly connected to the end of the screw away from the switching component. A limiting plate is fixedly connected to the limiting rod, and the connecting rod is rotatably connected to the limiting plate, so that when the screw rotates, it can drive the corresponding connecting plate and the upper module to move.

[0010] Preferably, a motor is fixedly connected to the upper mold base, a first bevel gear is fixedly connected to the output end of the motor, a mounting plate is fixedly connected to the upper mold base, a drive rod is rotatably connected to the mounting plate, a second bevel gear is fixedly connected to the drive rod, the first bevel gear and the second bevel gear are meshed together, a movable rod is slidably arranged on the drive rod, and limit blocks are fixedly connected to both ends of the movable rod. Limiting grooves adapted to the size of the limit blocks are opened on both screws. When the limit block at one end of the movable rod is in the limiting groove of either screw, the limit block at the other end of the movable rod just disengages from the limiting groove of the other screw.

[0011] Preferably, the switching assembly includes an electric push rod fixedly connected to the mounting plate, a switching plate fixedly connected to the extended end of the electric push rod, and a rotating ring rotatably connected to the movable rod, the rotating ring being rotatably connected to the switching plate.

[0012] Preferably, after the movable rod rotates with the drive rod to move the molding die and return it to its original position, the movable rod returns to its initial state, so that when the electric push rod drives the movable rod to insert into another screw, the limiting block can be moved into the limiting groove.

[0013] Preferably, a limiting strip is fixedly connected to the movable rod, and a limiting hole adapted to the size of the limiting strip is provided on the driving rod, so that the movable rod can move along the limiting hole and rotate with the driving rod.

[0014] Preferably, after a set of molding dies moves to below the injection port and completes injection molding, the motor drives the movable rod to rotate in the opposite direction to return the mold to its original position. At the same time, the switching component pushes the movable rod to move axially, causing the limiting block to disengage from the limiting groove of the current screw and embed into the limiting groove of another screw. Then, another set of moving components drives the corresponding molding die to move directly below the injection port to complete the station switching.

[0015] 3. Beneficial effects

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

[0017] 1. This utility model achieves rapid alternation of injection molding stations by linking two sets of molding molds and moving components, combined with an automatic switching mechanism of motor drive, limit blocks and screws. Mold core switching can be completed without stopping the machine, which significantly improves processing efficiency and meets the needs of continuous production.

[0018] 2. This utility model utilizes the sliding fit of the limiting rod and the sleeve rod to constrain the movement path of the molding die. Combined with the precision transmission of the ball screw pair, it ensures that the injection cavity is precisely aligned with the injection port when it moves to the bottom of the injection port. This avoids the offset or material leakage problems caused by traditional manual adjustment and improves the consistency of product molding quality.

[0019] 3. This utility model controls the axial displacement of the electric push rod and the movable rod in the switching assembly, combined with the embedded self-locking structure of the limit block and the limit groove, to achieve unilateral locking and free disengagement of the two sets of moving components. This ensures the stable transmission of driving force and the precise synchronization of action sequence during the workstation switching process, reduces the risk of equipment jamming, and extends the service life of the mold. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model.

[0021] Figure 2 This is a diagram showing the positional relationship between the molding die and the lower die base according to an embodiment of the present invention.

[0022] Figure 3 This is a bottom view of a movable component according to an embodiment of the present invention.

[0023] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0024] Figure 5 This is an exploded view of the sleeve and screw according to an embodiment of the present invention.

[0025] Figure 6 This is an exploded view of the screw and movable rod according to an embodiment of the present invention.

[0026] Figure 7 This is an exploded view of the movable rod and the drive rod according to an embodiment of the present invention.

[0027] Explanation of the labels in the diagram:

[0028] 1. Base; 11. Top plate; 101. Molding mold; 102. Injection port; 12. Upper mold base; 121. Upper module; 13. Lower mold base; 131. Lower module; 2. Moving component; 21. Fixed rod; 22. Connecting plate; 221. Sleeve rod; 23. Limiting rod; 231. Limiting plate; 24. Screw; 25. Screw sleeve; 26. Connecting rod; 27. Motor; 28. First bevel gear; 29. ​​Second bevel gear; 210. Drive rod; 211. Movable rod; 212. Limiting block; 213. Limiting groove; 214. Mounting plate; 215. Limiting strip; 216. Limiting hole; 3. Switching component; 31. Electric push rod; 32. Rotary ring; 33. Switching plate. Detailed Implementation

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0032] Please see Figure 1-7 This utility model provides a technical solution:

[0033] A car headlight base injection mold includes a base 1, a lower mold base 13 disposed on the base 1, a top plate 11, an injection port 102 opened on the top plate 11, and an upper mold base 12 disposed on the top plate 11. Two molding molds 101 are slidably disposed between the upper mold base 12 and the lower mold base 13. Each molding mold 101 includes a lower module 131 and an upper module 121 slidably disposed above the lower module 131. The upper module 121 and the lower module 131 are used to form an injection cavity. The two molding molds 101 are respectively disposed at both ends of the upper mold base 12. The upper mold base 12 is provided with... Two moving components 2 are provided to drive the movement of two molding dies 101 respectively. The two moving components 2 are mirrored at both ends of the upper mold base 12. The upper mold base 12 is provided with a switching component 3 for switching the working state of the moving components 2. With this configuration, through the dual-station alternating molding design, the two sets of molding dies 101 can move and switch independently, realizing the continuous connection of injection molding and demolding processes. The station switching can be completed without stopping the machine, which significantly shortens the production cycle. At the same time, the mirrored layout of the moving components 2 ensures the symmetry and stability of the synchronous movement of the two dies.

[0034] The movable component 2 includes a fixed rod 21 fixedly connected to the upper module 121, a connecting plate 22 fixedly connected to the fixed rod 21, and a limiting rod 23 fixedly connected to the upper mold base 12. A hollow sleeve rod 221 is fixedly connected to the connecting plate 22, and the limiting rod 23 passes through the connecting plate 22. Both ends of the switching component 3 are provided with screws 24 rotatably connected to the upper mold base 12. Screw sleeves 25 are threadedly connected to the screws 24 through a ball screw pair. The two screw sleeves 25 are fixedly connected to the two sleeve rods 221 respectively. A connecting rod 26 is fixedly connected to the end of the screw 24 away from the switching component 3. A limiting rod 23 is fixedly connected to the connecting rod 26. A limiting plate 231 is connected, and a connecting rod 26 is rotatably connected to the limiting plate 231, so that when the screw 24 rotates, it can drive the corresponding connecting plate 22 and the upper module 121 to move. In this way, the sliding cooperation between the limiting rod 23 and the sleeve rod 221 constrains the movement path of the molding die 101. Combined with the precision transmission of the ball screw pair and the rotation drive of the screw 24, it ensures that the upper module 121 moves smoothly along the preset trajectory, avoiding the displacement of the injection cavity due to off-center load or vibration. In addition, the rotatable connection design of the limiting plate 231 and the connecting rod 26 at the same time effectively disperses the radial load when the screw 24 rotates, extending the service life of the transmission components.

[0035] Specifically, a motor 27 is fixedly connected to the upper mold base 12, and a first bevel gear 28 is fixedly connected to the output end of the motor 27. A mounting plate 214 is fixedly connected to the upper mold base 12, and a drive rod 210 is rotatably connected to the mounting plate 214. A second bevel gear 29 is fixedly connected to the drive rod 210, and the first bevel gear 28 and the second bevel gear 29 are meshed together. A movable rod 211 is slidably mounted on the drive rod 210, and limit blocks 212 are fixedly connected to both ends of the movable rod 211. Limiting grooves 213 adapted to the size of the limit blocks 212 are opened on both screws 24. The limit block 212 at one end of the movable rod 211 is located between the two limit blocks 212. When either screw 24 is in the limiting groove 213, the limiting block 212 at its other end just disengages from the limiting groove 213 of the other screw 24. With this configuration, the motor 27 drives the bevel gear set to rotate the drive rod 210, thus concentrating the power source to achieve the linkage control of the two screws 24, simplifying the transmission structure. In addition, the embedded cooperation design between the movable rod 211 and the limiting block 212 ensures that only one side of the screw 24 is driven, while the other side of the screw 24 is freely disengaged. This ensures the reliability of power transmission and avoids mechanical interference caused by the simultaneous operation of the two screws 24, improving the accuracy and safety of the switching action.

[0036] Secondly, the switching assembly 3 includes an electric push rod 31 fixedly connected to the mounting plate 214. The extended end of the electric push rod 31 is fixedly connected to the switching plate 33. A rotating ring 32 is rotatably connected to the movable rod 211. The rotating ring 32 is rotatably connected to the switching plate 33. This arrangement allows the electric push rod 31 to push the movable rod 211 to move axially through the switching plate 33. The design of the rotating ring 32 allows the movable rod 211 to rotate freely with the drive rod 210 when sliding axially, eliminating the mutual interference between rotation and linear motion during the switching process. This ensures the rapid alignment and disengagement of the limit block 212 and the limit groove 213 of the screw 24, while reducing component wear and improving the smoothness and durability of the switching action.

[0037] Furthermore, after the movable rod 211 rotates with the drive rod 210 to move the molding die 101 and return it to its original position, the movable rod 211 returns to its initial state. This ensures that when the electric push rod 31 drives the movable rod 211 to insert into another screw 24, the limiting block 212 can be moved into the limiting groove 213. This design, through the initial position reset design of the movable rod 211, ensures the precise engagement of the limiting block 212 and the limiting groove 213 of the screw 24 during each station switch, avoiding misalignment or jamming problems caused by accumulated errors. At the same time, it ensures that the driving force of the electric push rod 31 is used entirely for axial displacement rather than overcoming mechanical resistance, improving switching efficiency and reducing energy consumption.

[0038] In addition, a limit strip 215 is fixedly connected to the movable rod 211, and a limit hole 216 adapted to the size of the limit strip 215 is provided on the drive rod 210, so that the movable rod 211 can move along the limit hole 216 and rotate with the drive rod 210. This arrangement allows the cooperation between the limit strip 215 and the limit hole 216 to both constrain the circumferential rotational freedom of the movable rod 211, making it rotate synchronously with the drive rod 210, and allow the movable rod 211 to slide along the axial direction to switch positions. Through the composite design of mechanical limit and sliding guide, the precise coordination of power transmission and displacement switching is achieved, preventing transmission failure caused by slippage of the movable rod 211.

[0039] Furthermore, after a set of molding dies 101 moves to below the injection port 102 and completes injection molding, the motor 27 drives the movable rod 211 to rotate in the opposite direction to return the mold to its original position. At the same time, the switching component 3 pushes the movable rod 211 to move axially, causing the limiting block 212 to disengage from the limiting groove 213 of the current screw 24 and embed into the limiting groove 213 of another screw 24. The other set of moving components 2 then drives the corresponding molding die 101 to move directly below the injection port 102 to complete the station switching. With this setup, the reverse drive of the motor 27 and the timing control of the switching component 3 ensure seamless connection of the actions of the two sets of molding dies 101 alternately covering the injection port 102, eliminating the manual intervention link during traditional mold switching and greatly improving production cycle and process stability.

[0040] Working principle:

[0041] In the initial state, one set of molding dies 101 is driven by the moving component 2 to move the injection cavity formed by the upper module 121 and the lower module 131 to directly below the injection port 102. During this process, the motor 27 drives the drive rod 210 to rotate through the bevel gear set. The drive rod 210 engages with the limiting block 212 at the end of the movable rod 211 and the limiting groove 213 of the corresponding screw 24, driving the screw 24 to rotate. The ball screw pair converts the rotational motion into the linear displacement of the sleeve 25, causing the sleeve rod 221 to slide along the limiting rod 23, so that the injection cavity is accurately positioned. After injection is completed, the motor 27 rotates in the opposite direction to drive the screw 210. 4. Reverse the rotation to return the molding mold 101 to its initial position. The electric push rod 31 of the switching component 3 then pushes the movable rod 211 to move axially. The limiting block 212 disengages from the limiting groove 213 of the current screw 24 and embeds into the limiting groove 213 of the other screw 24. At this time, the motor 27 starts again, driving the other screw 24 to rotate, which in turn moves the corresponding molding mold 101 to the injection port 102 for the next round of injection. This cycle is repeated to achieve alternating injection and station switching of the two molding molds 101. The entire process, through the combination of mechanical linkage and electric control, ensures the automated and continuous operation of the injection port 102 coverage, molding cavity positioning, and drive switching.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. 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 preferred examples and are not intended to limit the 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 vehicle lamp base injection mold, characterized by: The system includes a base (1), a lower mold base (13) disposed on the base (1), a top plate (11), an injection port (102) opened on the top plate (11), and an upper mold base (12) disposed on the top plate (11). Two sets of molding molds (101) are slidably disposed between the upper mold base (12) and the lower mold base (13). Each molding mold (101) includes a lower module (131) and an upper module (121) slidably disposed above the lower module (131). The upper module (121) and the lower module (131) are used to form an injection cavity. The two molding molds (101) are respectively disposed at both ends of the upper mold base (12). The upper mold base (12) is provided with two moving components (2) for driving the two molding molds (101) to move respectively. The two moving components (2) are mirrored at both ends of the upper mold base (12). The upper mold base (12) is provided with a switching component (3) for switching the working state of the moving components (2).

2. The injection mold for a vehicle lamp base (1) according to claim 1, characterized in that: The moving component (2) includes a fixed rod (21) fixedly connected to the upper module (121), a connecting plate (22) fixedly connected to the fixed rod (21), and a limiting rod (23) fixedly connected to the upper mold base (12). A hollow sleeve rod (221) is fixedly connected to the connecting plate (22), and the limiting rod (23) is provided through the connecting plate (22). Both ends of the switching component (3) are provided with screws (24) whose ends are rotatably connected to the upper mold base (12). The screw (24) is connected to a screw sleeve (25) by a ball screw thread. The two screw sleeves (25) are fixedly connected to the two sleeve rods (221) respectively. The end of the screw (24) away from the switching component (3) is fixedly connected to a connecting rod (26). The limiting rod (23) is fixedly connected to a limiting plate (231). The connecting rod (26) is rotatably connected to the limiting plate (231), so that when the screw (24) rotates, it can drive the corresponding connecting plate (22) and the upper module (121) to move.

3. The injection mold for a vehicle lamp base (1) according to claim 2, characterized in that: A motor (27) is fixedly connected to the upper mold base (12). A first bevel gear (28) is fixedly connected to the output end of the motor (27). A mounting plate (214) is fixedly connected to the upper mold base (12). A drive rod (210) is rotatably connected to the mounting plate (214). A second bevel gear (29) is fixedly connected to the drive rod (210). The first bevel gear (28) and the second bevel gear (29) are meshed together. A movable rod is slidably provided on the drive rod (210). 211), both ends of the movable rod (211) are fixedly connected to limit blocks (212), and both screws (24) are provided with limit grooves (213) that are adapted to the size of the limit blocks (212). When the limit block (212) at one end of the movable rod (211) is in the limit groove (213) of either screw (24), the limit block (212) at the other end of the movable rod (211) just disengages from the limit groove (213) of the other screw (24).

4. The injection mold for a vehicle lamp base (1) according to claim 3, characterized in that: The switching assembly (3) includes an electric push rod (31) fixedly connected to the mounting plate (214), a switching plate (33) fixedly connected to the extended end of the electric push rod (31), and a rotating ring (32) rotatably connected to the movable rod (211), the rotating ring (32) being rotatably connected to the switching plate (33).

5. The injection mold for a vehicle lamp base (1) according to claim 4, characterized in that: After the movable rod (211) rotates with the drive rod (210) to move the molding die (101) and return to its original position, the movable rod (211) returns to its initial state. This allows the electric push rod (31) to drive the movable rod (211) to insert into another screw (24), which in turn allows the limiting block (212) to move into the limiting groove (213).

6. The injection mold for a vehicle lamp base (1) according to claim 5, characterized in that: A limiting strip (215) is fixedly connected to the movable rod (211), and a limiting hole (216) adapted to the size of the limiting strip (215) is provided on the driving rod (210), so that the movable rod (211) can move along the limiting hole (216) and can rotate with the driving rod (210).

7. The injection mold for a vehicle lamp base (1) according to claim 6, characterized in that: After a set of molding dies (101) moves to below the injection port (102) and completes injection molding, the motor (27) drives the movable rod (211) to rotate in the opposite direction to return the mold to its original position. At the same time, the switching component (3) pushes the movable rod (211) to move axially, so that the limiting block (212) disengages from the limiting groove (213) of the current screw (24) and is embedded in the limiting groove (213) of another screw (24). Then, another set of moving components (2) drives the corresponding molding die (101) to move directly below the injection port (102) to complete the station switching.

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