A forming mold for an automobile rearview mirror housing

Abstract

The present application discloses a forming mold for an automotive rearview mirror housing, which includes a moving mold, a fixed mold, a forming module, and a demolding mechanism; the forming module is installed on the upper part of the fixed mold so as to cooperate with the moving mold to form the required product; the forming module includes a cooperating core group and a third moving core, the third moving core is used to form the corners of the product, and the cooperating core group is located on the side of the third moving core to form the side structure of the corners of the product; the demolding mechanism is installed on the fixed mold and cooperates with the forming module, and then during demolding, the demolding mechanism is adapted to drive the forming module to perform a demolding process including a first process and a second process in sequence. The beneficial effects of the present application: First, through the movement of the cooperating core group, pores are generated on the side of the third moving core, which facilitates the offset of the third moving core towards the center position of the cavity to achieve demolding from the corners; thus, the demolding process is simple and fast, which can effectively improve the demolding speed and production efficiency of the product.

Description

Technical Field

[0001] The present application relates to the field of automotive part processing, and particularly to a molding die for producing an automotive rearview mirror housing. Background Art

[0002] As Figures 1 to 3 shown, it is a schematic structural diagram of an existing product 100 of an automotive rearview mirror housing. The product 100 includes a first housing 110 and a second housing 120. The second housing 120 is connected to the side end of the first housing 110 and is inclined relative to the horizontal direction. The first housing 110 and the second housing 120 cooperate with each other to form a cavity, and the corner 140 of the cavity has a sharp corner structure; at the same time, a reverse buckle 130 is provided at a partial side end of the second housing 120 at the corner 140. Thus, when demolding the product 100 with the existing injection mold, the demolding of the corner 140 requires a multi-step core-pulling process, which requires a large number of driving sources and is relatively complex and time-consuming in the demolding process, thereby affecting the production cost and production efficiency of the product 100. Summary of the Invention

[0003] The purpose of the present application is to provide a molding die for an automotive rearview mirror housing, which can effectively reduce the design and demolding difficulty of the die.

[0004] To achieve the above purpose, the technical solution adopted in the present application is: a molding die for an automotive rearview mirror housing, including a moving die, a fixed die, a molding module, and a demolding mechanism; the molding module is installed on the upper part of the fixed die so as to cooperate with the moving die to form a required product; the molding module includes a mating core group and a third moving core, the third moving core is used to form the corner of the product, and the mating core group is located at the side of the third moving core to form the side structure of the corner of the product; the demolding mechanism is installed on the fixed die and cooperates with the molding module. Then, when demolding, the demolding mechanism is adapted to drive the molding module to sequentially perform a demolding process including a first process and a second process; wherein, the first process: the demolding mechanism is adapted to first drive the mating core group to separate from the molded product, and then drive the third moving core to move towards the center of the cavity of the molded product; the second process: the demolding mechanism is adapted to jack up the molded product upwards, thereby completely separating it from the molding module.

[0005] Preferably, the molding module further includes a traction core and a shaping core; the shaping core is fixedly installed on the stationary mold through a substrate provided at the lower end thereof, and the shaping core is used to mold the structure at a position away from the corner in the cavity of the product; an installation cavity is provided on one side of the substrate for the shaping core, and both the traction core and the mating core group are slidably installed in the installation cavity and are connected in cooperation with each other; the third moving core is rotatably installed in the installation cavity and cooperates with the traction core; the traction core is connected to the demolding mechanism, and thus during the first process, the traction core is adapted to move horizontally under the drive of the demolding mechanism; through the horizontal movement of the traction core, it is adapted to first drive the mating core group to separate from the molded product, and then drive the third moving core to deflect towards the center of the cavity of the molded product.

[0006] Preferably, the mating core group includes a first moving core and a second moving core. The first moving core is located below the third moving core, and the second moving core is located on the side of the third moving core; the traction core is located at the adjacent side of the first moving core and the second moving core; thus during the first process, through the horizontal sliding of the traction core away from the molded product, it is adapted to first drive the first moving core and the second moving core to simultaneously converge towards the traction core, and then move horizontally synchronously with the traction core until they separate from the molded product.

[0007] Preferably, the first moving core is cooperated with the side of the installation cavity away from the shaping core through a first limiting structure; the side walls of the first moving core and the traction core that are in contact with each other are respectively provided with a mating first connecting block and a second connecting groove; the first connecting block and the second connecting groove are inclined with respect to the moving direction of the traction core; when the traction core moves horizontally, the first moving core is adapted to be driven by the traction core to first move along the extending direction of the undercut at the middle side part of the molded product through the first limiting structure until a set distance, and then move horizontally synchronously with the traction core until it separates from the molded product.

[0008] Preferably, the first limiting structure includes a stop block and a stop groove; the stop block and the stop groove are respectively provided on the side wall of the first moving core and the installation cavity; the opening direction of the stop groove is parallel to the extending direction of the undercut in the molded product; when the traction core moves horizontally, the first moving core is adapted to move along the extending direction of the undercut at the middle side part of the molded product through the mutual sliding of the stop block and the stop groove until the stop block and the stop groove are separated.

[0009] Preferably, the second movable core and the fixed core are cooperated on the side close to the installation cavity through a second limiting structure; the side walls of the traction core and the second movable core that are in contact with each other are respectively provided with a cooperated second connecting block and a first connecting groove; the second connecting block and the first connecting groove are inclined to the moving direction of the traction core; when the traction core moves horizontally, the second movable core is adapted to be driven by the traction core to first move downward along the extending direction of the undercut in the formed product through the second limiting structure until a set distance, and then move horizontally synchronously with the traction core until it is separated from the formed product.

[0010] Preferably, the second limiting structure includes a limiting groove and a limiting block; the limiting block is arranged on the side wall of the second movable core, the limiting groove is arranged on the side wall of the fixed core, and the limiting groove is L-shaped; wherein, the vertical section of the limiting groove is parallel to the extending direction of the upper part of the undercut in the formed product; when the traction core moves horizontally, the first movable core is adapted to first move downward along the extending direction of the undercut in the formed product by sliding the limiting block along the vertical section of the limiting groove until the limiting block is located on the horizontal section of the limiting groove; and then move horizontally synchronously with the traction core by sliding the limiting block along the horizontal section of the limiting groove.

[0011] Preferably, a rotating shaft is fixedly installed on one side of the third movable core through a connecting plate, and the third movable core is rotatably installed on the substrate through the rotating shaft; a driving block is connected to one side of the traction core, and the driving block is slidably cooperated with the rotating shaft through a provided groove; the side walls of the rotating shaft and the groove in cooperation are respectively provided with a slidably cooperated driving groove and a convex block, and the driving groove includes a straight section and an inclined section; when the cooperating core group is separated from the formed product, the convex block is adapted to slide along the straight section so that the third movable core remains stationary; when the cooperating core group is separated from the formed product, the convex block is adapted to slide along the inclined section, thereby driving the rotating shaft to drive the third movable core to rotate towards the cavity center of the formed product.

[0012] Preferably, the demolding mechanism includes a core-pulling mechanism and a ejecting mechanism; the core-pulling mechanism is installed on the upper side part of the fixed mold and is connected to the traction core, and the core-pulling mechanism is adapted to drive the forming module to perform a first process through the traction core; the ejecting mechanism is installed at the lower part of the fixed mold and is slidably cooperated with the fixed core through a ejector rod, and the ejecting mechanism is adapted to perform a second process by the upward movement of the ejector rod, thereby ejecting the product after the first process to be separated from the fixed core.

[0013] Preferably, at least one fourth moving core is slidably installed on the side of the fixed mold of the molding module, and the fourth moving core is used to form the outer wall structure of the product; the fourth moving core is matched with an inclined guide post arranged on the moving mold through a set inclined guide hole; furthermore, during the mold opening process, the moving mold is adapted to drive the fourth moving core to move horizontally away from the molded product through the inclined guide post, thereby facilitating the subsequent demolding process.

[0014] Compared with the prior art, the beneficial effects of the present application are as follows:

[0015] During demolding, through a single drive of the demolding mechanism, the cooperating core group can be disengaged first, causing pores to appear on the side of the third moving core. Thus, it is convenient for the third moving core to be driven by the demolding mechanism to achieve demolding from the corner of the molded product by offsetting towards the center position of the cavity. Compared with the traditional demolding process, the demolding process of the present application is simple and fast, which can effectively improve the demolding speed of the product and thus improve production efficiency. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of an automotive rearview mirror housing in the prior art Figure 1 。

[0017] Figure 2 is a schematic structural diagram of an automotive rearview mirror housing in the prior art Figure 2 。

[0018] Figure 3 is a schematic structural diagram of an automotive rearview mirror housing in the prior art Figure 3 。

[0019] Figure 4 is a schematic diagram of the overall structure of the present invention.

[0020] Figure 5 is a schematic diagram of the structure of the present invention in the top-down direction after removing the moving mold.

[0021] Figure 6 is a schematic diagram of the mating structure of the molding module in the present invention Figure 1 。

[0022] Figure 7 is a schematic diagram of the mating structure of the molding module in the present invention Figure 2 。

[0023] Figure 8 is a schematic diagram of the disassembled state of the molding module in the present invention.

[0024] Figure 9 is a schematic diagram of the structure of the shaping core in the present invention.

[0025] Figure 10Schematic structural diagram of the traction core in the present invention.

[0026] Figure 11 Schematic structural diagram of the first moving core in the present invention.

[0027] Figure 12 Schematic structural diagram of the second moving core in the present invention.

[0028] Figure 13 Schematic structural diagram of the third moving core in the present invention.

[0029] Figure 14 Schematic diagram of the state when the traction core and the first moving core are in molding in the present invention.

[0030] Figure 15 Schematic diagram of the state when the traction core and the first moving core are demolded in the present invention.

[0031] Figure 16 Schematic diagram of the state when the traction core and the second moving core are in molding in the present invention.

[0032] Figure 17 Schematic diagram of the state when the traction core and the second moving core are demolded in the present invention.

[0033] Figure 18 Schematic diagram of the state when the third moving core is in molding in the present invention.

[0034] Figure 19 Schematic diagram of the state when the third moving core is demolded in the present invention.

[0035] In the figure: product 100, first housing 110, second housing 120, undercut 130, corner 140, buckle 150, moving die 200, fixed die 300, molding module 4, shaping core 41, limiting groove 411, substrate 410, installation cavity 4100, stop block 4101, traction core 42, first connecting block 421, first connecting groove 422, pull plate 423, driving block 424, groove 4240, convex block 4241, pull groove 4242, first moving core 43, first molding groove 430, stop groove 431, second connecting groove 432, second moving core 44, second molding groove 440, limiting block 441, second connecting block 442, third moving core 45, third molding groove 450, connecting plate 451, rotating shaft 452, driving groove 453, straight section 4531, inclined section 4532, fourth moving core 46, inclined guide hole 460, core pulling mechanism 5, slide rail 51, traction plate 52, ejecting mechanism 6, driving device 61, top plate 62, ejector rod 63. Detailed implementation manners

[0036] Next, in combination with specific embodiments, the present application will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0037] In the description of the present application, it should be noted that for orientation terms, such as terms "center", "horizontal", "vertical", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and position relationship are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0038] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence.

[0039] One preferred embodiment of the present application is as Figure 4 and Figure 19 shown. A molding die for an automotive rearview mirror housing includes a moving die 200, a fixed die 300, a molding module 4, and a demolding mechanism. The molding module 4 is installed on the upper part of the fixed die 300, and the molding module 4 can be used to mold the cavity of the product 100; thus, when the moving die 200 and the fixed die 300 are closed, the molding module 4 can cooperate with the molding cavity at the lower end of the moving die 200 to mold the required product 100. The molding module 4 includes a mating core group and a third moving core 45; wherein, the third moving core 45 is used to mold the corner 140 of the cavity in the product 100, and the mating core group is located on the side of the third moving core 45 to be used for molding the side structure of the corner 140 in the product 100. The demolding mechanism is installed on the fixed die 300 and cooperates with the molding module 4; when the product 100 is completed, the demolding mechanism can drive the molding module 4 to perform a demolding process including a first process and a second process, and the first process and the second process are carried out in sequence. Among them, the first process: the demolding mechanism can first drive the mating core group to separate from the molded product 100, and then drive the third moving core 45 to move towards the center of the cavity in the molded product 100. The second process: after both the mating core group and the third moving core 45 are demolded, the demolding mechanism can jack up the molded product 100 upward, so as to completely separate the molded product 100 from the molding module 4.

[0040] It can be understood that by Figures 1 to 3As shown, the first housing 110 and the second housing 120 of the product 100 form a sharp-angle structure at the connection position, and at the same time, the corner 140 itself also forms a sharp-angle structure. As a result, the third moving core 45 used for forming the corner 140 cannot be directly demolded in the horizontal or vertical direction, and can only move along the sharp-angle opening direction of the corner 140 to achieve demolding. Therefore, in order to facilitate the demolding of the third moving core 45, it is necessary to ensure that there is enough demolding clearance in the demolding direction of the third moving core 45. In this application, by arranging a movable matching core group on the side of the third moving core 45, when demolding, the matching core group can be first driven to separate from the molded product 100, so that there is enough demolding clearance for the third moving core 45 to move itself on the side. Then, the third moving core 45 moves through the position of the demolding clearance first to achieve demolding from the corner 140. At this time, the vertical upward degree-of-freedom restriction of the entire molding module 4 on the product 100 is released, and then the product 100 is pushed up by the demolding mechanism to achieve complete demolding from the molding module 4.

[0041] In this embodiment, as Figures 5 to 8 shown, at least one fourth moving core 46 is slidably installed on the side of the molding module 4 of the fixed mold 300, and the fourth moving core 46 can be used to form the outer wall structure of the product 100. The fourth moving core 46 is matched with the inclined guide post arranged on the moving mold 200 through the arranged inclined guide hole 460. Then, during the mold opening process, the moving mold 200 can drive the fourth moving core 46 to move horizontally away from the molded product 100 through the inclined guide post, which can facilitate the subsequent demolding process.

[0042] In this embodiment, the specific number of the molding modules 4 can be set according to actual production needs. For example, when large-scale production is required, as Figure 5 shown, two molding modules 4 and two corresponding core-pulling mechanisms 5 are installed on the fixed mold 300. Thus, the molding module of this application can mold two required products 100 in one molding process, which can effectively improve production efficiency.

[0043] One embodiment of this application, as Figures 6 to 9As shown, the forming module 4 further includes a traction core 42 and a sizing core 41; the sizing core 41 is fixedly installed on the stationary mold 300 through a substrate 410 provided at the lower end, and the sizing core 41 can be used to form the structure at a position away from the corner 140 in the cavity of the product 100. An installation cavity 4100 is provided on one side of the substrate 410 with respect to the sizing core 41. The traction core 42 and the mating core group are both slidably installed in the installation cavity 4100 and are cooperatively connected to each other. The third moving core 45 is rotatably installed in the installation cavity 4100 and cooperates with the traction core 42. The traction core 42 is connected to the demolding mechanism. Thus, during the first process, the traction core 42 can move horizontally under the drive of the demolding mechanism; thereby, through the horizontal movement of the traction core 42, the mating core group can be driven to disengage from the molded product 100 first, and then the third moving core 45 can be driven to deflect towards the center of the cavity of the molded product 100.

[0044] It can be understood that, as Figures 1 to 3 shown, due to the sharp corner structure formed between the first housing 110 and the second housing 120, if the mating core group wants to generate a demolding gap for the demolding of the third moving core 45 by disengaging from the product 100, the mating core group needs to move away from the second housing 120. To ensure that the mating core group can smoothly move away from the second housing 120, a traction core 42 is provided in this application. The traction core 42 can be connected to the mating core group. Thus, during the demolding process, through the horizontal movement of the traction core 42 away from the product 100 under the drive of the demolding mechanism, a moving space can be generated for the mating core group in the direction away from the second housing 120. Furthermore, during the horizontal movement of the traction core 42, the mating core group can synchronously disengage from the molded product 100 along with the traction core 42.

[0045] In this embodiment, as Figures 6 to 17 shown, the mating core group includes a first moving core 43 and a second moving core 44; the first moving core 43 is located below the third moving core 45, and the second moving core 44 is located on the side of the third moving core 45. The traction core 42 is located at the adjacent side of the first moving core 43 and the second moving core 44. Thus, during the first process, through the horizontal sliding of the traction core 42 away from the molded product 100, the first moving core 43 and the second moving core 44 can be first driven to converge towards the traction core 42, and then synchronously move horizontally along with the traction core 42 to disengage from the molded product 100.

[0046] It can be understood that the cooperating core set can form the structures on both sides of the corner 140. Therefore, when demolding, the cooperating core set needs to move in a direction away from both sides of the corner 140. If the cooperating core set is an integral structure, the cooperating core set can only move in the same direction as the third moving core 45, which will inevitably increase the complexity of the substrate 410 and related structures. At the same time, as Figure 1 and Figure 2 show, a buckle 150 is also provided on the inner wall of the first housing 110. If the cooperating core set moves in the same direction as the third moving core 45, it will also interfere with the formed buckle 150. Thus, in order to achieve the demolding of the cooperating core set, the cooperating core set can be divided into a first moving core 43 and a second moving core 44, and the first moving core 43 and the second moving core 44 are respectively located on both sides of the third moving core 45. Thus, when demolding, the first moving core 43 can first perform a horizontal movement away from the lower part of the corner 140 of the second housing 120; at the same time, the second moving core 44 can first perform a vertical movement away from the upper part of the corner 140 of the second housing 120; until both the first moving core 43 and the second moving core 44 move a set distance, they can move horizontally synchronously with the traction core 42 until they are separated from the product 100.

[0047] In this embodiment, as Figure 10 、 Figure 11 、 Figure 14 and Figure 15 show, the first moving core 43 is cooperated with the side of the installation cavity 4100 away from the shaping core 41 through a first limiting structure. The side walls of the first moving core 43 and the traction core 42 that are in contact with each other are respectively provided with a cooperating first connecting block 421 and a second connecting groove 432; the first connecting block 421 and the second connecting groove 432 are inclined with respect to the moving direction of the traction core 42; when the traction core 42 performs a horizontal movement, through the mutual sliding of the first connecting block 421 and the second connecting groove 432, the first moving core 43 can be driven by the traction core 42 to first move along the extending direction of the undercut 130 on the side part of the formed product 100 through the first limiting structure until a set distance, and then move horizontally synchronously with the traction core 42 until it is separated from the formed product 100.

[0048] It can be understood that there are two ways to set the first connecting block 421 and the second connecting groove 432; one is that the first connecting block 421 is arranged on the traction core 42 and the second connecting groove 432 is arranged on the first moving core 43; the other is that the first connecting block 421 is arranged on the first moving core 43 and the second connecting groove 432 is arranged on the traction core 42.

[0049] Meanwhile, a first forming groove 430 for forming the lower undercut 130 at the corner 140 is provided on the side wall of the first movable core 43. Thus, when the first movable core 43 is demolded, it can first move along the extension direction of the undercut 130, that is, in the direction away from the second housing 120 at the lower part of the corner 140, until the first movable core 43 is separated from the formed undercut 130, and when the projection of the first movable core 43 along the moving direction of the traction core 43 does not interfere with the undercut 130, the first movable core 43 can be separated from the first limiting structure and move horizontally synchronously with the traction core 42 until it is separated from the formed product 100.

[0050] In this embodiment, as Figure 9 , Figure 11 , Figure 14 and Figure 15 shown, the first limiting structure includes a stop block 4101 and a stop groove 431; the stop block 4101 and the stop groove 431 are respectively arranged on the side walls of the first movable core 43 and the installation cavity 4100; the opening direction of the stop groove 431 or the extension direction of the stop block 4101 is parallel to the extension direction of the lower undercut 130 at the corner 140 in the formed product 100. When the traction core 42 moves horizontally, the first movable core 43 can move along the side part of the formed product 100, that is, in the extension direction of the lower undercut 130 at the corner 140, through the mutual sliding of the stop block 4101 and the stop groove 431 until the stop block 4101 and the stop groove 431 are separated.

[0051] It can be understood that there are two ways to set the stop block 4101 and the stop groove 431; one is that the stop block 4101 is arranged on the side wall of the installation cavity 4100 and the stop groove 431 is arranged on the side wall of the first movable core 43; the other is that the stop block 4101 is arranged on the side wall of the first movable core 43 and the stop groove 431 is arranged on the side wall of the installation cavity 4100.

[0052] Meanwhile, the stop groove 431 includes a long side wall and a short side wall; when demolding, the stop groove 431 can realize the movement of the first movable core 43 away from the lower undercut 130 at the corner 140 through the sliding fit of the short side wall of the stop groove 431 and the stop block 4101 until the short side wall of the stop groove 431 is separated from the stop block 4101. That is, the matching length of the short side wall of the stop groove 431 and the stop block 4101 is the above-set distance.

[0053] Moreover, when resetting after demolding is completed, the first movable core 43 can be guaranteed to move in the reverse direction of the extension direction of the lower undercut 130 at the corner 140 by the abutment of the long side wall of the stop groove 431 and the stop block 4101.

[0054] In one embodiment of the present application, as Figure 9 , Figure 10 , Figure 12 , Figure 16 andFigure 17 As shown, on the side of the second movable core 44 and the fixed core 41 close to the installation cavity 4100, they are cooperated through a second limiting structure; on the side walls of the traction core 42 and the second movable core 44 that are in contact with each other, a second connecting block 442 and a first connecting groove 422 that are cooperated with each other are respectively provided; the second connecting block 442 and the first connecting groove 422 are inclined with respect to the moving direction of the traction core 42. When the traction core 42 moves horizontally, through the mutual sliding of the second connecting block 442 and the first connecting groove 422, the second movable core 44 can, under the drive of the traction core 42, first move downward along the extension direction of the upper-middle part undercut 130 of the formed product 100 through the second limiting structure until a set distance, and then move horizontally synchronously with the traction core 42 until it is separated from the formed product 100.

[0055] It can be understood that there are two ways to set the second connecting block 442 and the first connecting groove 422; one is that the second connecting block 442 is arranged on the second movable core 44, and the first connecting groove 422 is arranged on the traction core 42; the other is that the second connecting block 442 is arranged on the traction core 42, and the first connecting groove 422 is arranged on the second movable core 44.

[0056] Meanwhile, a second forming groove 440 for forming the upper part undercut 130 of the corner 140 is arranged on the side wall of the second movable core 44. Thus, when the second movable core 44 is demolded, it can first move along the extension direction of the undercut 130, that is, in the direction away from the second shell 120 of the upper part of the corner 140, until the second movable core 44 is separated from the formed undercut 130, and when the projection of the second movable core 44 along the moving direction of the traction core 43 does not interfere with the undercut 130 either, the second movable core 44 can be separated from the second limiting structure and move horizontally synchronously with the traction core 42 until it is separated from the formed product 100.

[0057] In this embodiment, as Figure 9 、 Figure 12 、 Figure 16 and Figure 17 shown, the second limiting structure includes a limiting groove 411 and a limiting block 441; the limiting block 441 is arranged on the side wall of the second movable core 44, the limiting groove 411 is arranged on the side wall of the fixed core 41, and the limiting groove 411 is L-shaped; among them, the vertical section of the limiting groove 411 is parallel to the extension direction of the upper-middle part undercut 130 of the formed product 100. When the traction core 42 moves horizontally, the first movable core 43 can first move downward along the vertical section of the limiting groove 411 through the limiting block 441 to move along the extension direction of the upper-middle part undercut 130 of the formed product 100 until the limiting block 441 is located in the horizontal section of the limiting groove 411; then move horizontally synchronously with the traction core 42 through the limiting block 441 sliding along the horizontal section of the limiting groove 411 until the second movable core 44 is separated from the formed product 100.

[0058] It can be understood that the mating length between the vertical section of the limiting groove 411 and the limiting block 441 is the set distance for the downward movement of the second movable core 44 in the above content.

[0059] In one embodiment of the present application, as Figure 10 , Figure 13 , Figure 18 and Figure 19 shown, on one side of the third movable core 45, a rotating shaft 452 is fixedly installed through a connecting plate 451, and the third movable core 45 is rotatably installed on the substrate 410 through the rotating shaft 452. One side of the traction core 42 is connected with a driving block 424, and the driving block 424 is in sliding fit with the rotating shaft 452 through a provided groove 4240. The side walls of the rotating shaft 452 and the groove 4240 in cooperation are respectively provided with a driving groove 453 and a convex block 4241 that are in sliding fit with each other. The driving groove 453 includes a straight section 4531 and an inclined section 4532. When the mating core group is disengaged from the formed product 100, the convex block 4241 can slide along the straight section 4531, so that the third movable core 45 remains stationary, thereby avoiding interference between the third movable core 45 and the mating core group. When the mating core group is disengaged from the formed product 100, the convex block 4241 can slide along the inclined section 4532 to drive the rotating shaft 452 to drive the third movable core 45 to rotate towards the cavity center of the formed product 100.

[0060] It can be understood that there are two ways to set the convex block 4241 and the driving groove 453; firstly, the convex block 4241 is arranged in the groove 4240, and the driving groove 453 is arranged on the side wall of the rotating shaft 452; secondly, the convex block 4241 is arranged on the rotating shaft 452, and the driving groove 453 is arranged on the side wall of the groove 4240.

[0061] Meanwhile, when the mating core group is disengaged from the formed product 100, the cavity center of the product 100 is the position where the demolding gap generated after the mating core group is demolded is located. And, the third movable core 45 does not need to be completely disengaged from the cavity of the product 100 during demolding, and only needs to ensure that there is no interference between the upward lifting of the product 100 by the demolding mechanism and the third movable core 45 during the second process.

[0062] In this embodiment, as Figure 1 , Figure 2 , Figure 5 , Figure 14 and Figure 15 shown, since the inner wall of the first housing 110 of the product 100 is provided with a buckle 150, and the demolding direction of the buckle 150 is basically vertical, the traction core 42 needs to avoid the forming position of the buckle 150 when moving horizontally, so as to avoid interference between the traction core 42 and the buckle 150 during the moving demolding process.

[0063] Specifically, as shown in Figure 10 , Figure 14 and Figure 15 , the drawing core 42 is wedge-shaped, and at the same time, the drawing core 42 is horizontally moved along a direction inclined to the opening direction of the cavity in the product 100 to achieve demolding. The axial direction of the rotating shaft 452 is parallel to the opening direction of the cavity in the product 100, so the axial direction of the rotating shaft 452 is inclined to the horizontal movement direction of the drawing core 42.

[0064] To ensure that the third moving core 45 can be rotated and demolded smoothly, as shown in Figure 10 , Figure 14 and Figure 15 , the driving block 424 is slidably installed on the base plate 410, and the sliding direction of the driving block 424 is parallel to the axial direction of the rotating shaft 452. A pulling groove 4242 is provided on one side of the driving block 424 close to the drawing core 42. The drawing core 42 is provided with a pulling plate 423 on the side to cooperate with the pulling groove 4242. Thus, during the horizontal movement of the drawing core 42, while the pulling plate 423 slides along the pulling groove 4242, it can drive the driving block 424 to slide along the axial direction of the rotating shaft 452 through the pulling groove 4242.

[0065] In one embodiment of the present application, as shown in Figure 4 , Figure 5 and Figure 7 , the demolding mechanism includes a core-pulling mechanism 5 and a ejecting mechanism 6; the core-pulling mechanism 5 is installed on the upper side of the fixed mold 300 and is connected to the drawing core 42. The core-pulling mechanism 5 can drive the forming module 4 through the driving of the drawing core 42 to perform the first process. The ejecting mechanism 6 is installed at the lower part of the fixed mold 300 and is slidably matched with the fixed core 41 through the ejector rod 63. Thus, after the first process is completed, the ejecting mechanism 6 can lift the product 100 by the upward movement of the ejector rod 63 to separate it from the fixed core 41, so as to complete the second process of demolding.

[0066] In this embodiment, as shown in Figure 5 , the core-pulling mechanism 5 includes an actuating device (not shown), a slide rail 51 and a pulling plate 52; the slide rail 51 is fixedly installed on the fixed mold 300, and the drawing core 42 is slidably installed on the slide rail 51, that is, the guiding direction of the slide rail 51 is inclined to the opening direction of the cavity in the product 100; the actuating device is fixedly installed at the end of the slide rail 51, and the output end of the actuating device and the drawing core 42 are connected through the pulling plate 52. Thus, after the product 100 is formed, the actuating device can drive the pulling plate 52 to pull the drawing core 42 to drive the cooperating core group and the third moving core 45 to perform the corresponding demolding process.

[0067] In this embodiment, as shown in Figure 4 and Figure 7As shown, the ejector mechanism 6 includes a driving device 61, a top plate 62, and the multiple ejector rods 63 described above. The multiple ejector rods 63 are all installed on the top plate 62. The driving device 61 is installed on the fixed mold 300 and is connected to the top plate 62 through its output end. Thus, after the forming module 4 completes the first process, the ejector mechanism 6 can drive the top plate 62 through the driving device 61 to drive the multiple ejector rods 63 to move upward synchronously until the product 100 is lifted to be separated from the shaping core 41 and the third moving core 45.

[0068] It can be understood that both the actuating device and the driving device 61 are prior arts, and common ones include cylinders, oil cylinders, linear motors, etc.

[0069] For easy understanding, the entire working process of the forming module 4 can be elaborated in detail.

[0070] (1) Initially, the forming module 4 and the fourth moving core 46 are retracted to the state as shown in Figures 5 to 7 , and then the product 100 is injection-molded by covering the moving mold 200 and the fixed mold 300.

[0071] After the product 100 is injection-molded;

[0072] (2) Mold opening process: The moving mold 200 moves upward, so that the moving mold 200 can drive the fourth moving core 46 to move horizontally away from the molded product 100 through the inclined guide pillar, making the outer wall side of the product 100 have no interference structure to facilitate the subsequent demolding process.

[0073] (3) First process: The actuating device in the core-pulling mechanism 5 pulls the traction core 42 to move horizontally along the slide rail 51 through the traction plate 52. During the horizontal movement of the traction core 42, as shown in Figure 14 and Figure 15 , the first moving core 43 can move synchronously with the traction core 42 through the connection and cooperation of the second connection groove 432 and the first connection block 421. However, through the limiting cooperation between the stop block 4101 and the short side wall of the stop groove 431, the first moving core 43 first moves parallel to the extension direction of the undercut 130 at the lower part of the corner 140 in the product 100 until the stop block 4101 and the short side wall of the stop groove 431 are separated. Then, the first moving core 43 can move synchronously with the traction core 42 until it is separated from the molded product 100.

[0074] At the same time, as shown in Figure 16 and Figure 17As shown, the second movable core 44 can also move synchronously with the traction core 42 through the connection and cooperation between the first connection groove 422 and the second connection block 442. However, through the limiting cooperation between the limiting groove 411 and the limiting block 441, the second movable core 44 first moves parallel to the extending direction of the upper reverse buckle 130 at the corner 140 of the product 100 until the limiting block 441 slides along the vertical section of the limiting groove 411 to the horizontal section. Then, the second movable core 44 can move synchronously with the traction core 42 along the horizontal section of the limiting groove 411 by the limiting block 441 until it separates from the molded product 100.

[0075] Meanwhile, as Figure 18 and Figure 19 shown, the traction core 42 can pull the driving block 424 to move parallel to the axis of the rotating shaft 452; and during the process of the traction core 42 driving the first movable core 43 and the second movable core 44 to demold, the driving block 424 can slide along the straight section 4531 of the driving groove 453 on the rotating shaft 452 through the convex block 4241, so that the third movable core 45 remains stationary during this process. Until the convex block 4241 slides to the end of the straight section 4531, the first movable core 43 and the second movable core 44 just separate from the molded product. Subsequently, the traction core 42 continues to move, so that the driving block 424 can slide along the inclined section 4532 of the driving groove 453 through the convex block 4241, and then drive the rotating shaft 452 to drive the third movable core 45 to deflect towards the cavity center of the product 100. During this process, the first movable core 43 and the second movable core 44 continue to move synchronously with the traction core 42.

[0076] (4) The second process: The driving device 61 is started to drive the top plate 62 to drive the ejector rod 63 to move upward, and then the product 100 attached to the shaping core 41 can be lifted to separate from the shaping core 41 and the third movable core 45, so that the product 100 can be grabbed and unloaded manually or by a manipulator.

[0077] (5) The reset process: First, the driving device 61 can drive the top plate 62 to drive the ejector rod 63 to move downward synchronously to the initial position.

[0078] Subsequently, the core-pulling mechanism 5 drives the traction plate 52 to drive the traction core 42 to slide reversely along the slide rail 51 through the execution device.

[0079] Thus, during the reverse movement of the traction core 42, the traction core 42 can first drive the driving block 424 to slide along the inclined section 4532 of the driving groove 453 on the rotating shaft 452 through the convex block 4241 to drive the rotating shaft 452 to drive the third movable core 45 to deflect reversely to the initial position, and then the driving block 424 continuously slides along the straight section 4531 of the driving groove 453 through the convex block 4241.

[0080] Meanwhile, during the reverse movement of the traction core 42, the first movable core 43 can first move synchronously with the traction core 42 until the long side wall of the retaining groove 431 abuts against the retaining block 4101. Subsequently, as the traction core 42 continues to move, the first movable core 43 can be driven to reset to its initial position through the sliding fit between the long side wall of the retaining groove 431 and the retaining block 4101.

[0081] Meanwhile, during the reverse movement of the traction core 42, the second movable core 44 can first move synchronously with the traction core 42 along the horizontal section of the limiting groove 411 with the limiting block 441 until the limiting block 441 abuts against the vertical section of the limiting groove 411. Subsequently, as the traction core 42 continues to move, the second movable core 44 can move the limiting block 441 upward along the vertical section of the limiting groove 411 until it resets to its initial position.

[0082] The above describes the basic principle, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A molding die for an automotive rearview mirror housing, characterized in that, it includes: a moving die and a fixed die; a molding module, the molding module is installed on the upper part of the fixed die so as to form a required product through cooperation with the moving die; the molding module includes a mating core group and a third moving core, the third moving core is used to form the corners of the product, and the mating core group is located on the side of the third moving core; and a demolding mechanism, the demolding mechanism is installed on the fixed die and cooperates with the molding module; the demolding mechanism is adapted to drive the molding module to perform a demolding process including a first process and a second process in sequence; wherein, in the first process: the demolding mechanism is adapted to first drive the mating core group to separate from the molded product, and then drive the third moving core to deflect towards the center of the cavity of the molded product; in the second process: the demolding mechanism jacks up the molded product upwards until it is completely separated from the molding module; the molding module further includes a traction core and a shaping core; the shaping core is fixedly installed on the fixed die through a substrate provided at the lower end, and the shaping core is used to form the structure at the position away from the corner in the cavity of the product; an installation cavity is provided on one side of the substrate for the shaping core, and both the traction core and the mating core assembly are slidably installed in the installation cavity and are connected in cooperation with each other; the third moving core is rotatably installed in the installation cavity and cooperates with the traction core; the traction core is connected to the demolding mechanism; when the first process is carried out, the traction core is adapted to move horizontally under the drive of the demolding mechanism, and then first drive the mating core group to separate from the molded product, and then drive the third moving core to deflect towards the center of the cavity of the molded product; the mating core group includes a first moving core and a second moving core, the first moving core is located below the third moving core, and the second moving core is located on the side of the third moving core; the traction core is located on the adjacent side of the first moving core and the second moving core; when the first process is carried out, by the horizontal sliding of the traction core away from the molded product, it is adapted to first drive the first moving core and the second moving core to simultaneously converge towards the traction core, and then move horizontally synchronously with the traction core to separate from the molded product; a rotating shaft is fixedly installed on one side of the third moving core through a connecting plate, and the third moving core is rotatably installed on the substrate through the rotating shaft; a driving block is connected to one side of the traction core, and the driving block is slidably fitted with the rotating shaft through a provided groove; driving grooves and protrusions for sliding fit are respectively provided on the side walls of the cooperation between the rotating shaft and the groove, and the driving groove includes a straight section and an inclined section; when the mating core group separates from the molded product, the protrusion is adapted to slide along the straight section so that the third moving core remains stationary; when the mating core group separates from the molded product, the protrusion is adapted to slide along the inclined section, thereby driving the rotating shaft to drive the third moving core to rotate towards the center of the cavity of the molded product.

2. The forming die for an automotive rearview mirror housing as described in claim 1, characterized in that: The first movable core is cooperated with the side of the installation cavity away from the shaping core through a first limiting structure; on the side walls of the first movable core and the traction core that are in contact with each other, a first connecting block and a second connecting groove that are cooperated with each other are respectively arranged; the first connecting block and the second connecting groove are inclined with respect to the moving direction of the traction core; when the traction core moves horizontally, the first movable core is adapted to be driven by the traction core to first move along the extending direction of the side part reverse buckle in the formed product through the first limiting structure until a set distance, and then move horizontally synchronously with the traction core until it is separated from the formed product.

3. The forming die for an automotive rearview mirror housing as described in claim 2, characterized in that: The first limiting structure includes a stop block and a stop groove; the stop block and the stop groove are respectively arranged on the side wall of the first movable core and the side wall of the installation cavity; the opening direction of the stop groove is parallel to the extending direction of the side part reverse buckle in the formed product; when the traction core moves horizontally, the first movable core is adapted to move along the extending direction of the side part reverse buckle in the formed product through the mutual sliding of the stop block and the stop groove until the stop block and the stop groove are separated from each other.

4. The forming die for an automotive rearview mirror housing as described in claim 2, characterized in that: The second movable core is cooperated with the side of the shaping core close to the installation cavity through a second limiting structure; on the side walls of the traction core and the second movable core that are in contact with each other, a second connecting block and a first connecting groove that are cooperated with each other are respectively arranged; the second connecting block and the first connecting groove are inclined with respect to the moving direction of the traction core; when the traction core moves horizontally, the second movable core is adapted to be driven by the traction core to first move down a set distance along the extending direction of the upper-middle part reverse buckle in the formed product through the second limiting structure, and then move horizontally synchronously with the traction core until it is separated from the formed product.

5. The forming die for an automotive rearview mirror housing as described in claim 4, characterized in that: The second limiting structure includes a limiting groove and a limiting block; the limiting block is arranged on the side wall of the second movable core, the limiting groove is arranged on the side wall of the shaping core, and the limiting groove is L-shaped; wherein, the vertical section of the limiting groove is parallel to the extending direction of the upper-middle part reverse buckle in the formed product; when the traction core moves horizontally, the first movable core is adapted to first move down along the vertical section of the limiting groove through the limiting block to move along the extending direction of the reverse buckle in the formed product until the limiting block is located in the horizontal section of the limiting groove; and then move horizontally synchronously with the traction core through the limiting block sliding along the horizontal section of the limiting groove.

6. The forming die for an automotive rearview mirror housing as described in claim 1, characterized in that: The demolding mechanism includes a core-pulling mechanism and a material ejecting mechanism; the core-pulling mechanism is installed on the upper side of the fixed mold and connected to the traction core, and the core-pulling mechanism is adapted to drive the molding module to perform a first process through the traction core; the material ejecting mechanism is installed at the lower part of the fixed mold and is slidably matched with the shaping core through a ejector rod, and the material ejecting mechanism is adapted to lift the product after the first process by moving the ejector rod upward to separate the product from the shaping core.

7. The molding die for an automotive rearview mirror housing according to claim 1, characterized in that: At least one fourth moving core is slidably installed on the side of the molding module of the fixed mold, and the fourth moving core is used for molding the outer wall structure of the product; the fourth moving core is matched with an inclined guide post arranged on the moving mold through an inclined guide hole arranged; when the moving mold is opened, the moving mold is adapted to drive the fourth moving core to move horizontally away from the molded product through the inclined guide post.

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