Double-color car window button injection mold

Abstract

The injection mold comprises a first module and a second module which are arranged on a rotary table mechanism, the first module and the second module respectively comprise an upper mold, a lower mold and a corresponding glue injection port, the lower molds of the two modules are the same in structure and can be exchanged, the upper molds are synchronously opened and closed, and the mold is matched with a movable mold sliding block through a convex core on a mold core plate, a shaft hole insert pin and a movable mold sliding block. When the first mold is assembled, the shaft hole insert pin and the movable mold slide block are inserted to form an inner shell part structure; after the mold is opened, the movable mold sliding block slides outwards to form a receding space, shell forming is completed through rotating disc transposition and second mold assembling, and after the mold is opened, a part slides outwards to be demolded. According to the mold, through alternate injection molding of double modules and precise linkage of parts, integral forming of the double-color car window button is achieved, and compared with a traditional technology, the production efficiency is remarkably improved; meanwhile, an inner shell double-layer wall body structure is innovatively formed, the impact resistance and the structural stability of the button are effectively enhanced, and the service life of a product is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to a double-color vehicle window button injection mold. Background Art

[0002] In automotive window lift control systems, window buttons are the direct operating components of the window lift switch. Their injection molding quality and structural design significantly impact the user experience, product reliability, and overall vehicle interior quality. With the automotive industry's increasing demand for refined and high-performance components, traditional two-shot button molding solutions are no longer adaptable to technological trends, presenting numerous challenges that need to be addressed.

[0003] Traditional buttons use the "inner shell + outer shell" two-color injection molding process. Among them, the inner shell 1' is the core structural component, and the shaft hole support wall A11' is set on the two side walls, and the assembly shaft hole A111' is processed; the outer shell 2' is adapted to the inner shell, and an avoidance gap 21' is opened at the corresponding position of the two side walls. After injection molding, the outer shell 2' is covered on the outside of the inner shell 1', and the shaft hole support wall A11' of the inner shell 1' is exposed through the avoidance gap 21' of the outer shell 2'. During assembly, the shaft passes through the assembly shaft hole A and is connected to the switch base to realize the rotational assembly of the button and the base. However, this design has obvious defects: due to the design of the avoidance gap, the wall thickness of the button product at this location is thinned after the outer shell is assembled with the inner shell, resulting in insufficient structural strength in this area and easy cracking due to external force. The improved button improves its overall strength through structural optimization: the inner shell 1' continues the design of the shaft hole support wall A11' and the assembly shaft hole A111', while the outer shell 2' eliminates the avoidance notch and instead adds a shaft hole support wall B21' at the corresponding position and processes the assembly shaft hole B211'. After injection molding, the shaft hole support wall B of the outer shell is correspondingly covered on the outside of the shaft hole support wall A of the inner shell, and the assembly shaft hole B is coaxially connected to the assembly shaft hole A. The double-layer wall structure design of the inner and outer shells increases the wall thickness of the key parts of the button product, eliminating the weak links of traditional buttons, significantly enhancing the impact resistance and structural stability of the button, and greatly extending the service life of the product. However, this improved button requires the special design of a two-shot injection mold to achieve mass production. Summary of the Invention

[0004] Purpose of the present invention: In order to overcome the defects of the prior art, the present invention provides a two-color window button injection mold to achieve two-color integrated molding, improve product structural strength and production efficiency.

[0005] The technical solution of the present invention is: a two-color window button injection mold, comprising a first mold group and a second mold group disposed on a turntable mechanism, wherein the first mold group comprises a first upper mold group and a first lower mold group, the first upper mold group having a first color glue injection port; the second mold group comprises a second upper mold group and a second lower mold group, the second upper mold group having a second color glue injection port; the first lower mold group and the second lower mold group having the same structure and being fixed to the turntable mechanism so that the positions of the two lower mold groups can be interchanged; both lower mold groups are equipped with a product ejection mechanism, and the two upper mold groups have a synchronous opening and closing action; The first lower mold and the second lower mold are both provided with a mold core plate, a convex core is provided on the mold core plate, and shaft hole pins and movable mold sliders are provided on both sides of the convex core. The convex core is used to form the inner surface of the inner shell, the shaft hole pins are used to form the assembly shaft hole A and the assembly shaft hole B on one side wall of the inner shell, and the movable mold slider is used to form the outer side surfaces of the shaft hole support wall A and the shaft hole support wall B on one side wall of the inner shell, and the shaft hole pins are inserted into the corresponding movable mold sliders and protrude from the forming end surface of the movable mold slider. The movable mold slider is slidably engaged with the shaft hole pins; When the first mold is assembled, the movable mold slider and the shaft hole inlay pin are slid and inserted, and the first lower mold and the first upper mold cooperate to form the inner shell molding cavity. At this time, the shaft hole inlay pin is used to form the assembly shaft hole A of the inner shell, and the movable mold slider is used to form the outer side surface of the shaft hole support wall A on the inner shell; when the first mold is opened, the movable mold slider slides outward relative to the shaft hole inlay pin to form a clearance space for the shaft hole support wall B to be formed; When the second mold is combined, the second lower mold with the injection-molded inner shell and the empty space is combined with the second upper mold to form the outer shell molding cavity. At this time, the axial hole pin is used to form the assembly axial hole B of the inner shell, and the movable mold slider is used to form the outer side surface of the axial hole support wall B on the inner shell; when the second mold group is opened, the movable mold slider and the axial hole pin slide outward away from the convex core.

[0006] By adopting the above technical solution, in the first die set, the first upper die and the first lower die are closed, and the inner shell portion of a single color is first formed by sliding and inserting the movable die slider and the shaft hole insert pin. At this time, the movable die slider and the shaft hole insert pin respectively form the outer side surface of the shaft hole support wall A and the assembly shaft hole A; then, the first upper die and the first lower die are opened, and the movable die slider slides outward relative to the shaft hole insert pin to leave space for the formation of the shaft hole support wall B; Then the turntable mechanism drives the first lower mold and the second lower mold to rotate 180 degrees to exchange positions. At this time, the original first lower mold becomes the current second lower mold, and the original second lower mold becomes the current first lower mold. The current second lower mold has an injection-molded inner shell and leaves a space for displacement. In the second mold group, the second upper mold and the second lower mold are closed to form the two-color shell part. At this time, the movable mold slider and the shaft hole inlay pin respectively form the outer side surface of the shaft hole support wall B and the assembly shaft hole B; then, the second upper mold and the second lower mold are opened, and the movable mold slider and the shaft hole inlay pin slide outward away from the convex core to complete one injection cycle.

[0007] This ingenious mold design enables the integrated molding of a two-color window button, improving production efficiency. Furthermore, during the injection molding process, a corresponding shaft hole support wall B is successfully added to the outer side of the shaft hole support wall A of the inner shell, forming a double-wall structure. This design increases the wall thickness in key areas of the button, significantly enhancing its impact resistance and structural stability, and significantly extending its service life.

[0008] The present invention is further configured as follows: a movable block A is slidingly provided on the mold core plate, and the movable mold slider is linked to the movable block A; a transmission part A is fixedly provided on the first upper mold, and the transmission part A and the movable block A are plugged in up and down and matched in an inclined surface. When the first mold group opens and closes the mold, the first upper mold drives the transmission part A to move up and down, and utilizes the inclined surface matching structure to drive the movable block A to slide horizontally, thereby driving the movable mold slider to slide inward or outward to form a clearance space.

[0009] A further configuration of the present invention is that the transmission member A fixed on the first upper mold is designed to cooperate with the inclined surface of the movable block A, which cleverly utilizes the up and down displacement when the mold is opened and closed, converts it into horizontal sliding of the movable block A, and then drives the movable mold slider to slide inward or outward to form the necessary clearance space.

[0010] The present invention is further configured as follows: a locking top piece is fixedly provided on the second upper mold, and the outer top surface of the locking top piece is matched with the movable block A in an inclined surface; when the second mold is assembled, the second upper mold drives the locking top piece to move downward, and uses the outer top surface to contact the movable block A, thereby limiting the sliding insertion of the movable mold slider.

[0011] With the above further arrangement, the inclined surface matching design of the locking top member and the movable block A not only realizes the stable locking of the movable mold slider when the second mold is assembled, but also effectively ensures the size of the clearance space.

[0012] The present invention is further provided with: a movable block B is slidingly provided on the mold core plate, the shaft hole pin is linked to the movable block B, the movable block A is slidably connected to the movable block B, and the relative sliding distance between the two forms the required clearance space; the second upper mold is fixed with a first transmission member B, the first transmission member B and the movable block B are plugged in up and down, and are beveled. When the second mold is opened and closed, the second upper mold drives the first transmission member B to move up and down, and uses the beveled matching structure to drive the movable block B to slide horizontally, thereby driving the movable block A and the shaft hole pin to slide outward or insert inward; a second transmission member B is fixed on the first upper mold, and the inner top surface of the second transmission member B is beveled with the movable block B. When the first mold is combined, the first upper mold drives the second transmission member B to move downward, and uses the inner top surface to push the movable block B to slide inward, thereby driving the movable block A and the shaft hole pin to slide inward.

[0013] With the above-mentioned further arrangement, when the second module performs the mold opening and closing action, the second upper mold drives the first transmission member B to move up and down, and utilizes the inclined surface matching structure with the movable block B to drive the movable block B to slide horizontally. This sliding action further drives the movable block A and the shaft hole inlay pin to slide outward or insert inward, which is convenient for the molding of the two-color outer shell and the subsequent demolding; similarly, when the first module performs the mold closing action, the first upper mold drives the second transmission member B to move downward, and utilizes the inner top surface of the second transmission member B to match the inclined surface of the movable block B to push the movable block B to slide inward, thereby driving the movable block A and the shaft hole inlay pin to slide inward, which is convenient for the molding of the single-color inner shell.

[0014] The present invention is further provided with: the movable block B is provided with an oblique slot, the first transmission member B has a T-shaped oblique plug, and limiting lugs are provided on both sides of the oblique plug, the limiting lugs are inclined outward from top to bottom, and pin cavities are provided on both side walls of the oblique slot, each pin cavity is provided with a movable latch and an elastic member, the pin head of the movable latch extends into the oblique slot, and the upper end of the pin head is provided with a guide inclined surface; when the oblique plug is inserted into the oblique slot, the lower end of the limiting lug contacts the guide inclined surface of the pin head and pushes the pin head to retract into the pin cavity. After being inserted into place, the pin head of the movable latch extends to the outside of the upper end of the limiting lug under the action of the elastic member.

[0015] With the above-mentioned further setting, when the movable block B on the first lower mold is in the condition of always being inserted, after it is exchanged with the second lower mold, the second mold is combined, and the oblique plug of the first transmission part B is downwardly inserted into the oblique slot of the movable block B. At this time, the lower end of the limiting lug of the oblique plug will contact the guide inclined surface of the pin head and push the pin head to retract into the pin cavity. After being inserted into place, since the upper end of the limiting lug is tilted inward, space for movement is left for the pin head. At this time, the pin head extends to the outside of the upper end of the limiting lug under the action of the elastic part. When the mold is opened subsequently, a pair of limiting lugs of the oblique plug cooperate with the extended pin head, thereby pulling the movable block B to slide outward.

[0016] The present invention is further provided with the following configuration: the movable block A and the movable block B are connected by a T-shaped plug and slot, and the plug can slide in the slot.

[0017] With the above further arrangement, this T-shaped plug and slot design ensures the stability of the connection between the movable block A and the movable block B, while allowing a certain relative movement between them.

[0018] The present invention is further configured as follows: an inclined guide cavity is provided on the movable block A, and an inclined guide column is provided at the lower end of the transmission member A to cooperate with the inclined guide cavity A. The inclined guide cavity is inclined outward from top to bottom, and the movable block A is driven to slide outward or insert inward through the interaction between the inclined guide column and the inclined guide cavity.

[0019] This further arrangement, combined with the inclined guide post and cavity, not only effectively drives the movable block A through the transmission element A, but also ensures smooth and accurate movement. During the mold opening and closing process, the guide post moves along the inclined path of the cavity, guiding the movable block A in its outward or inward movement.

[0020] The present invention is further configured as follows: a channel is provided inside the movable mold slider and the movable block A, and the shaft hole pin is slidably inserted into the channel. One end of the shaft hole pin passes through the channel for forming and assembling the shaft hole, and the other end passes through the channel and is connected to the movable block B.

[0021] With the above-mentioned further arrangement, the shaft hole pin is slidably inserted into the channel inside the movable mold slider and the movable block A, which not only realizes the precise forming of the shaft hole part, but also ensures the stability and guidance of the shaft hole pin during the mold movement.

[0022] The present invention is further configured as follows: a pair of convex cores are provided on the mold core plate, and each convex core is equipped with an axial hole pin and a movable mold slider on both sides; the first lower mold and the first upper mold can cooperate to form two inner shell molding cavities; the second lower mold and the second upper mold can cooperate to form two outer shell molding cavities.

[0023] With the above further arrangement, the cooperation between the first lower mold and the first upper mold, and the cooperation between the second lower mold and the second upper mold, respectively constitute two independent molding cavities for injection molding the inner shell and the outer shell of the window button, thereby realizing the integrated production of two-color injection molding.

[0024] The present invention is further configured as follows: the mold core plate is provided with a movable block A on both sides of each convex core, and a movable block B on both sides of a pair of convex cores, and each movable block B is connected to a pair of movable blocks A on the same side and the shaft hole inlay pin; The first upper mold is correspondingly provided with a plurality of transmission members A and a second transmission member B, and the second upper mold is correspondingly provided with a plurality of first transmission members B.

[0025] With the above-mentioned further configuration, the configuration of movable block A and transmission member A, movable block B and first transmission member B, and second transmission member B provides a reliable driving force for the opening and closing of the mold, ensuring the accuracy and efficiency of the mold movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a diagram of a traditional button structure in the background technology of the present invention; Figure 2 This is a traditional button split diagram in the background technology of the present invention; Figure 3 This is a structural diagram of the housing of the improved button in the background technology of the present invention; Figure 4 is a structural diagram of a specific embodiment of the present invention; Figure 5 A structural diagram of a first upper mold according to a specific embodiment of the present invention; Figure 6 A structural diagram of a second upper mold according to a specific embodiment of the present invention; Figure 7 This is a structural diagram of a first lower mold according to a specific embodiment of the present invention; Figure 8 A structural diagram of a second lower mold according to a specific embodiment of the present invention; Figure 9 This is a diagram showing the internal structure of the first module according to a specific embodiment of the present invention; Figure 10 for Figure 9 Partial structural diagram; Figure 11 for Figure 10 A partial enlarged view of part I in the middle, where H is the sliding distance of the movable mold slider to form the clearance space; Figure 12 for Figure 10 Exploded diagram; Figure 13 This is a diagram showing the internal structure of the second module according to a specific embodiment of the present invention; Figure 14 for Figure 13 Partial structural diagram; Figure 15 for Figure 14 Exploded diagram; Figure 16 This is a diagram showing the coordination of a pair of movable latches and an oblique plug in a specific embodiment of the present invention; Figure 17 This is an installation diagram of a pair of movable latches in a specific embodiment of the present invention.

[0027] In the figure: inner shell 1', shaft hole support wall A11', assembly shaft hole A111', outer shell 2', avoidance gap 21'; shaft hole support wall B21', shaft hole B211'; First die set 2, first upper die 21, first lower die 22, second die set 3, second upper die 31, second lower die 32; Mold core plate 11, convex core 12, axial hole pin 13, movable mold slider 14, forming end surface 141, movable block A151, plug 1511, inclined guide cavity 1512, transmission part A152, inclined guide column 1521, locking top part 153, outer top surface 1531; movable block B161, inclined slot 1611, slot 1612, pin cavity 16111, movable pin 16112, pin head a, guide inclined surface a1, elastic part 16113, first transmission part B162, inclined plug 1621, limiting lug 16211, second transmission part B163, inner top surface 1631. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in this embodiment with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] like Figure 4-17 As shown, a two-color window button injection mold of the present invention includes a first mold group 2 and a second mold group 3 disposed on a turntable mechanism (not shown in the existing design diagram). The first mold group 2 includes a first upper mold group 21 and a first lower mold group 22. The first upper mold group 21 is provided with a first color glue injection port. The second mold group 3 includes a second upper mold group 31 and a second lower mold group 32. The second upper mold group 31 is provided with a second color glue injection port. The first lower mold group 22 and the second lower mold group 32 have the same structure and are fixed to the turntable mechanism to achieve interchangeable positions of the two lower mold groups. Both lower mold groups are equipped with a product ejection mechanism, and the two upper mold groups are synchronized in opening and closing. The first and second lower molds are both provided with a core plate 11, on which a convex core 12 is provided. Axle hole inserts 13 and a movable mold slider 14 are provided on both sides of the convex core 12. The convex core 12 is used to form the inner surface of the inner shell, the axial hole inserts 13 are used to form the assembly axial hole A and the assembly axial hole B on a side wall of the inner shell, and the movable mold slider 14 is used to form the outer side surfaces of the axial hole support wall A and the axial hole support wall B on a side wall of the inner shell. The axial hole inserts 13 are inserted into the corresponding movable mold slider 14 and protrude from the forming end surface 141 of the movable mold slider. The movable mold slider 14 slidably cooperates with the axial hole inserts 13. When the first die set 2 is closed, the movable die slider 14 and the axial hole inserting pin 13 slide inwardly, and the first lower die 22 cooperates with the first upper die 21 to form the inner shell molding cavity. At this time, the axial hole inserting pin 13 is used to form the assembly axial hole A of the inner shell, and the movable die slider 14 is used to form the outer side surface of the axial hole support wall A on the inner shell; when the first die set 2 is opened, the movable die slider 14 slides outwardly relative to the axial hole inserting pin 13, forming a clearance space for the molding of the axial hole support wall B; When the second module 3 is closed, the second lower mold 32 with the injection-molded inner shell and the empty space cooperates with the second upper mold 31 to form the outer shell molding cavity. At this time, the axial hole insert pin 13 is used to form the assembly axial hole B of the inner shell, and the movable mold slider 14 is used to form the outer side surface of the axial hole support wall B on the inner shell; when the second module 3 is opened, the movable mold slider 14 and the axial hole insert pin 13 slide outward away from the convex core 12.

[0030] Specifically, a movable block A151 is slidingly provided on the mold core plate 11, and the movable mold slider 14 is linked to the movable block A151, and is integral or screw-connected. A transmission member A152 is fixedly provided on the first upper mold 21. The transmission member A152 and the movable block A151 are plugged in up and down, and are matched with each other at an angle. When the first mold assembly 2 is opened and closed, the first upper mold 21 drives the transmission member A152 to move up and down, and uses the inclined surface matching structure to drive the movable block A151 to slide horizontally, thereby driving the movable mold slider 14 to slide inward or outward to form a clearance space. Specifically, an inclined guide cavity 1512 is provided on the movable block A151, and an inclined guide column 1521 is provided at the lower end of the transmission member A152 to match the inclined guide cavity A1512. The inclined guide cavity is inclined outward from top to bottom. Through the interaction between the inclined guide column and the inclined guide cavity, the movable block A151 is driven to slide outward or inward. A locking top piece 153 is fixedly provided on the second upper mold 31, and the outer top surface 1531 of the locking top piece 153 is inclined to cooperate with the movable block A151; when the second mold assembly 3 is closed, the second upper mold 31 drives the locking top piece 153 to move downward, and uses the outer top surface 1531 to contact the movable block A151, thereby limiting the sliding insertion of the movable mold slider 14.

[0031] Specifically, a movable block B161 is slidably provided on the mold core plate 11, and the shaft hole inlay pin 13 is linked to the movable block B161, and is integrated or screwed. The movable block A151 is slidably connected to the movable block B161, and the relative sliding distance between the two forms the required clearance space. Specifically, the movable block A151 and the movable block B161 are connected by a T-shaped plug 1511 and a slot 1612, and the plug 1511 can slide in the slot 1612; the second upper mold 31 is fixed with a first transmission member B162, and the first transmission member B162 and the movable block B161 are plugged in up and down, and are matched in an inclined surface. When the second module 3 is opened and closed, the second upper mold 31 drives the first transmission member B162 to move up and down, and uses the inclined surface matching structure to drive the movable block B161 to slide horizontally, thereby driving the movable block A151 and the shaft hole inlay pin 13 to slide outward or insert inward; the first upper mold 21 is fixed with a second transmission member B163, and the inner top surface 1631 of the second transmission member B163 is inclinedly matched with the movable block B161. When the first module 2 is closed, the first upper mold 21 drives the second transmission member B163 to move downward, and uses the inner top surface 1631 to push the movable block B161 to slide inward, thereby driving the movable block A151 and the shaft hole inlay pin 13 to slide inward. Specifically, the movable block B161 is provided with an oblique slot 1611, and the first transmission member B162 has a T-shaped oblique plug 1621. Limiting lugs 1621 are integrally provided on both sides of the oblique plug 1621. The limiting lugs 16211 are inclined outward from top to bottom, and pin cavities 16111 are provided on both side walls of the oblique slot 1611. A movable latch 16112 and an elastic member 16113 are provided in each pin cavity 16111. The pin head a of the movable latch 16112 extends into the oblique slot, and a guiding inclined surface a1 is provided on the upper end of the pin head a; when the oblique plug 1621 is inserted downward into the oblique slot 1611, the lower end of the limiting lug 16211 contacts the guiding inclined surface a1 of the pin head and pushes the pin head a to retract into the pin cavity 16111. After being inserted into place, the pin head a of the movable latch extends to the outside of the upper end of the limiting lug 16211 under the action of the elastic member 16113.

[0032] Specifically, a channel is provided inside the movable mold slider 14 and the movable block A151, and the shaft hole pin 13 is slidably inserted into the channel. One end of the shaft hole pin 13 passes through the channel for forming and assembling the shaft hole, and the other end passes through the channel and is connected to the movable block B161.

[0033] Specifically, the mold core plate 11 is provided with a pair of convex cores 12, each with an axial hole pin 13 and a movable mold slider 14 on both sides. The first lower mold 22 and the first upper mold 21 cooperate to form two inner shell molding cavities; the second lower mold 32 and the second upper mold 31 cooperate to form two outer shell molding cavities. The mold core plate 11 is provided with a movable block A151 on both sides of each convex core 12, and a movable block B161 on both sides of each pair of convex cores 12. Each movable block B161 is connected to the same pair of movable blocks A151 and the axial hole pin 13. The first upper mold 21 is provided with a plurality of corresponding transmission members A152 and second transmission members B163, and the second upper mold 31 is provided with a plurality of corresponding first transmission members B162.

[0034] The working principle of the present invention is as follows: (1) First module working stage Partial molding of the inner shell: When the first upper mold 21 and the first lower mold 22 are closed, the first upper mold drives the transmission part A152 and the second transmission part B163 to move downward, and the inclined guide column 1521 of the transmission part A is inserted downward into the inclined guide cavity 1512 of the movable block A151, and the horizontal component of force generated by the inclined surface is used to push the movable block A to slide inward; and the inner top surface 1631 of the second transmission part B163 cooperates with the inclined surface of the movable block B161, thereby pushing the movable block B to slide inward, and then driving the movable block A151 and the shaft hole inlay pin 13 to be inserted inward, thereby jointly forming the inner shell molding cavity. At this time, the convex core 12 molds the inner surface of the inner shell, the movable mold slider molds the outer side surface of the inner shell shaft hole support wall A, and the shaft hole inlay pin molds the assembly shaft hole A, and the first injection molding of the inner shell is completed through the first color injection port.

[0035] Formation of clearance space: When the first module is opened, the first upper mold drives the transmission part A152 and the second transmission part B163 to move upward. At this time, the second transmission part B163 does not act on the movable block B161, and the inclined guide column of the transmission part A disengages from the inclined guide cavity upward, and uses the inclined surface to drive the movable block A to slide outward, driving the movable mold slider to slide outward relative to the shaft hole inlay pin, forming a clearance space a next to the shaft hole support wall A for the shaft hole support wall B to be formed, preparing for the subsequent second color injection.

[0036] (2) Turntable repositioning stage The turntable mechanism drives the first lower mold to rotate 180 degrees and the second lower mold to exchange positions. The original first lower mold has been injected with the inner shell and the reserved space becomes the new second lower mold. The original second lower mold becomes the new first lower mold, providing a basis for the two-color injection molding of the second module group.

[0037] (3) Second module working stage Partial outer shell molding: The second upper mold 31 and the new second lower mold (formerly the first lower mold) are combined to form the outer shell molding cavity. The second upper mold drives the first transmission member B162 and the locking member 153 downward. The oblique plug 1621 of the first transmission member B is inserted into the oblique slot 1611 of the movable block B161. The lower ends of the limiting lugs 16211 on both sides of the oblique plug slide along the guiding inclined surface b of the movable latch pin, pressing the pin head into the pin cavity 16111 and compressing the elastic member 16113. Once inserted into place, the pin head extends outside the lugs. The outer top surface 1531 of the locking member 153 contacts the movable block A, limiting the insertion of the movable mold slider. The movable mold slider forms the outer surface of the inner shell shaft hole support wall B. The shaft hole pin forms the assembly shaft hole B. The outer shell is injected through the second color injection port, covering the inner shell and filling the clearance space.

[0038] Demolding preparation: When the second module is opened, the second upper mold drives the first transmission part B and the lock top part 153 to move upward. At this time, the lock top part 153 does not act on the movable block A151. The limiting lugs 16211 on both sides of the oblique plug cooperate with the inclined surface of the pin head, thereby driving the movable block B to slide outward, so that the movable block A, the movable mold slider and the shaft hole inlay pin are away from the convex core, which is convenient for the subsequent demolding of the product and completes a two-color injection molding cycle.

[0039] It should be noted that in the description of the present invention, all directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being described. In the description of this disclosure, "plurality" or "several" means at least two, such as two or three, unless otherwise specifically defined.

[0041] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "coupled," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

Claims

1. A two-color window button injection mold, comprising a first mold group (2) and a second mold group (3) arranged on a turntable mechanism, wherein the first mold group (2) comprises a first upper mold group (21) and a first lower mold group (22), and the first upper mold group (21) is provided with a first color glue injection port; the second mold group (3) comprises a second upper mold group (31) and a second lower mold group (32), and the second upper mold group (31) is provided with a second color glue injection port; the first lower mold group (22) and the second lower mold group (32) have the same structure and are fixed on the turntable mechanism to realize the position interchange of the two lower mold groups, the two lower mold groups are both equipped with a product ejection mechanism, and the two upper mold groups have a synchronous mold opening and closing action; Its characteristics are: The first lower mold and the second lower mold are both provided with a mold core plate (11), a convex core (12) is provided on the mold core plate (11), and an axial hole inserting pin (13) and a movable mold slider (14) are provided on both sides of the convex core (12), the convex core (12) is used to form the inner surface of the inner shell, the axial hole inserting pin (13) is used to form the assembly axial hole A and the assembly axial hole B on the side wall of the inner shell, and the movable mold slider (14) is used to form the outer side surface of the axial hole support wall A and the axial hole support wall B on the side wall of the inner shell, and the axial hole inserting pin (13) is inserted into the corresponding movable mold slider (14) and protrudes from the molding end surface (141) on the movable mold slider, and the movable mold slider (14) is slidably matched with the axial hole inserting pin (13); When the first die set (2) is closed, the movable die slide (14) and the axial hole insert pin (13) are slid and inserted, and the first lower die (22) cooperates with the first upper die (21) to form the inner shell molding cavity. At this time, the axial hole insert pin (13) is used to form the assembly axial hole A of the inner shell, and the movable die slide (14) is used to form the outer side surface of the axial hole support wall A on the inner shell; when the first die set (2) is opened, the movable die slide (14) slides outward relative to the axial hole insert pin (13) to form a clearance space for the axial hole support wall B to be formed; When the second die set (3) is closed, the second lower die (32) with the injection molded inner shell and the space left to make way cooperates with the second upper die (31) to form the outer shell molding cavity. At this time, the axial hole insert pin (13) is used to form the assembly axial hole B of the inner shell, and the movable die slider (14) is used to form the outer side surface of the axial hole support wall B on the inner shell; when the second die set (3) is opened, the movable die slider (14) and the axial hole insert pin (13) slide outwardly away from the convex core (12).

2. The two-color window button injection mold according to claim 1, characterized in that: A movable block A (151) is slidably provided on the mold core plate (11), and the movable mold slider (14) is linked to the movable block A (151); a transmission member A (152) is fixedly provided on the first upper mold (21), and the transmission member A (152) and the movable block A (151) are plugged in up and down and are matched in an inclined surface. When the first mold group (2) opens and closes the mold, the first upper mold (21) drives the transmission member A (152) to move up and down, and uses the inclined surface matching structure to drive the movable block A (151) to slide horizontally, thereby driving the movable mold slider (14) to slide inward or outward to form a clearance space.

3. The two-color window button injection mold according to claim 2, characterized in that: A locking top member (153) is fixedly provided on the second upper mold (31), and an outer top surface (1531) of the locking top member (153) is matched with the movable block A (151) in an inclined manner; when the second mold assembly (3) is closed, the second upper mold (31) drives the locking top member (153) to move downward, and utilizes the outer top surface (1531) to contact the movable block A (151), thereby limiting the sliding insertion of the movable mold slider (14).

4. The two-color window button injection mold according to claim 2, characterized in that: A movable block B (161) is slidably provided on the mold core plate (11), the shaft hole needle (13) is linked to the movable block B (161), the movable block A (151) is slidably connected to the movable block B (161), and the relative sliding distance between the two forms the required clearance space; the second upper mold (31) is fixed with a first transmission member B (162), the first transmission member B (162) and the movable block B (161) are plugged in up and down and are in an inclined surface fit. When the second mold assembly (3) is opened and closed, the second upper mold (31) drives the first transmission member B (162) to move up and down, and the inclined surface fit is used to form a plurality of movable blocks. The structure drives the movable block B (161) to slide horizontally, thereby driving the movable block A (151) and the shaft hole inlay pin (13) to slide outward or insert inward; the first upper mold (21) is fixedly provided with a second transmission member B (163), and the inner top surface (1631) of the second transmission member B (163) is matched with the movable block B (161) in an inclined surface. When the first mold assembly (2) is closed, the first upper mold (21) drives the second transmission member B (163) to move downward, and uses the inner top surface (1631) to push the movable block B (161) to slide inward, thereby driving the movable block A (151) and the shaft hole inlay pin (13) to slide inward.

5. The two-color window button injection mold according to claim 4, characterized in that: The movable block B (161) is provided with an oblique slot (1611), the first transmission member B (162) has a T-shaped oblique plug (1621), and limiting lugs (16211) are provided on both sides of the oblique plug (1621). The limiting lugs (16211) are inclined outward from top to bottom, and pin cavities (16111) are provided on both side walls of the oblique slot (1611). Each pin cavity (16111) is provided with a movable latch (16112) and an elastic member (16113). The movable latch The pin head (a) of (16112) extends into the oblique slot, and a guiding inclined surface (a1) is provided at the upper end of the pin head (a); when the oblique plug (1621) is inserted into the oblique slot (1611), the lower end of the limiting lug (16211) contacts the guiding inclined surface (a1) of the pin head and pushes the pin head (a) back into the pin cavity (16111). After being inserted into place, the pin head (a) of the movable pin extends to the outer side of the upper end of the limiting lug (16211) under the action of the elastic member (16113).

6. The two-color window button injection mold according to claim 4, characterized in that: The movable block A (151) and the movable block B (161) are connected by plugging a T-shaped plug (1511) and a slot (1612), and the plug (1511) can slide in the slot (1612).

7. The two-color window button injection mold according to claim 2, characterized in that: The movable block A (151) is provided with an inclined guide cavity (1512), and the lower end of the transmission member A (152) is provided with an inclined guide column (1521) that cooperates with the inclined guide cavity A (1512). The inclined guide cavity is inclined outward from top to bottom, and the movable block A (151) is driven to slide outward or insert inward through the interaction between the inclined guide column and the inclined guide cavity.

8. The two-color window button injection mold according to claim 2, characterized in that: A channel is provided inside the movable mold slider (14) and the movable block A (151), and the shaft hole inlay pin (13) is slidably arranged in the channel. One end of the shaft hole inlay pin (13) passes through the channel for forming and assembling the shaft hole, and the other end passes through the channel and is connected to the movable block B (161).

9. The two-color window button injection mold according to any one of claims 2 to 8, characterized in that: A pair of convex cores (12) are provided on the mold core plate (11), and both sides of each convex core (12) are equipped with an axial hole pin (13) and a movable mold slider (14). The first lower mold (22) and the first upper mold (21) can cooperate to form two inner shell molding cavities; the second lower mold (32) and the second upper mold (31) can cooperate to form two outer shell molding cavities.

10. The two-color window button injection mold according to claim 9, characterized in that: The mold core plate (11) is provided with a movable block A (151) on both sides of each convex core (12), and a movable block B (161) is provided on both sides of a pair of convex cores (12), and each movable block B (161) is connected to a pair of movable blocks A (151) and an axis hole inlay pin (13) on the same side; The first upper mold (21) is correspondingly provided with a plurality of transmission members A (152) and second transmission members B (163), and the second upper mold (31) is correspondingly provided with a plurality of first transmission members B (162).

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