A two-color overmolding product forming mold

Abstract

The application discloses a forming die for a double-color coated product, comprising a movable die, a fixed die, a first forming die set, a second forming die set and a driving mechanism; the first forming die set is respectively installed on the movable die and the fixed die, the second forming die set is installed on the fixed die, and the driving mechanism is installed on the fixed die and cooperates with the first forming die set and the second forming die set; when forming, the first forming die set is suitable for forming a first part of the product, then the driving mechanism drives the second forming die set and the first forming die set to align to form a second part of the product; after the mold is opened, the driving mechanism is suitable for first driving the second cavity to separate, and then driving the formed product to separate from the first forming die set and the second forming die set. The application has the beneficial effects that, compared with a traditional double-die forming mode, the application simultaneously forms two parts of different materials of the product through one set of molds, so that the design cost of the mold can be reduced, and the forming quality and the production efficiency of the product can be improved.

Description

Technical Field

[0001] This application relates to the field of two-color mold technology, and in particular to a molding mold for two-color overmolded products. Background Technology

[0002] like Figure 1 The diagram shows a structural schematic of a two-color coated product 100. The first part 110 of product 100 is made of plastic, and the second part 120 of product 100 is made of rubber. According to conventional design, two sets of molds are required. One mold is used to first form the first part 110 of product 100, and then the formed first part 110 is placed on the other mold to form the second part 120, finally obtaining the desired product 100.

[0003] However, using two sets of molds will increase the production time and cost of product 100. Furthermore, due to the presence of processing errors in the two sets of molds, the molding quality of product 100 will also decrease. Summary of the Invention

[0004] One of the objectives of this application is to provide a set of molds that can quickly perform secondary molding of two-color overmolded products.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a molding die for a two-color overmolded product, comprising a moving die, a fixed die, a first molding module, a second molding module, and a driving mechanism; the first molding module is respectively installed on the moving die and the fixed die, the second molding module is installed on the fixed die, and the driving mechanism is installed on the fixed die and cooperates with the first molding module and the second molding module respectively; during molding, the first molding module is adapted to first mold a first part of the product through a first cavity, and then the driving mechanism drives the second molding module to move closer to the first molding module, so that the second molding module aligns with the first cavity through a second cavity to mold a second part of the product; after the mold is opened by separating the first cavity, the driving mechanism is adapted to first drive the second cavity to separate, and then drive the molded product to detach from the first molding module and the second molding module respectively.

[0006] Preferably, the first molding module includes a first shaping core and a second shaping core; the first shaping core is installed on the moving mold, and the second shaping core is installed on the fixed mold; when the fixed mold and the moving mold are closed, the first shaping core and the second shaping core cooperate with each other to form the first cavity, which is then used to mold a first part of the product; when the mold is opened, the first shaping core is adapted to move away from the second shaping core located on the fixed mold along with the moving mold, thereby partially demolding the first part of the molded product.

[0007] Preferably, the fixed mold is provided with a first guide groove in communication with the first cavity; the second molding module comprises a first movable core and a second movable core; the first movable core and the second movable core are adapted to cooperate with each other through the heads to form the second cavity; the heads of the first movable core and the second movable core are located in the first guide groove; when the molding of the first part of the product is performed, the first movable core is adapted to seal the first cavity through the head; after the molding of the first part of the product is completed, the driving mechanism is adapted to drive the first movable core and the second movable core to move synchronously along the first guide groove until the second cavity and the first cavity are aligned and communicated; after the mold is opened, the driving mechanism is adapted to drive the second movable core to perform a separation movement relative to the first movable core, thereby performing a semi-ejection of the second part of the molded product.

[0008] Preferably, the driving mechanism comprises a driving plate; the driving plate is adapted to cooperate with the first movable core through a first driving structure; the driving plate is adapted to cooperate with the second movable core through a second driving structure and a reset structure; when the molding of the second part of the product is needed, the driving plate is adapted to move in the opening direction so that the first movable core and the second movable core are driven synchronously to slide along the first guide groove through the first driving structure and the second driving structure respectively; after the mold is opened, the driving plate is adapted to continue to move in the opening direction so that the second movable core is driven to perform a separation movement relative to the first movable core through the reset structure.

[0009] Preferably, the first movable core and the fixed mold are elastically connected through a first spring; the first movable core is provided with a first through hole adapted to the driving plate; the first driving structure comprises a first driving surface and a third driving surface provided in the first through hole and the driving plate respectively, and the first driving surface and the third driving surface are both inclined; when the molding of the second part of the product is needed, the driving plate is adapted to extrude the third driving surface through the first driving surface to drive the first movable core to slide along the first guide groove and stretch or compress the first spring; when resetting, the driving plate moves reversely, and the first movable core is adapted to reset under the elastic force of the first spring.

[0010] Preferably, the second movable core and the fixed die are elastically connected by a second spring; the second movable core is provided with a second through hole matched with the driving plate; the second driving structure comprises a driving block and a second driving surface; the driving block is wedge-shaped and is arranged on the side wall of the second through hole, and the second driving surface is arranged on the driving plate; when the second part of the product needs to be formed, the driving plate is adapted to press the driving block through the second driving surface, so as to drive the second movable core to slide along the first guide groove and stretch or compress the second spring; when resetting, the driving plate moves reversely, and the second movable core is adapted to reset under the elastic force of the second spring.

[0011] Preferably, the reset structure comprises the driving block, the second spring and an avoiding groove arranged on the driving plate and adjacent to the second driving surface; after the mold is opened, the driving plate continues to move in the opening direction until the second driving surface passes the driving block, so that the second movable core moves to reset under the elastic force of the second spring until the driving block and the avoiding groove abut; in this process, the first movable core is kept stationary by abutting with the driving plate; the length of the avoiding groove is greater than the length of the driving block, so that the second movable core is kept stationary by sliding of the driving block along the avoiding groove during the product demolding process of the driving mechanism.

[0012] Preferably, the fixed die is further provided with a locking assembly, the locking assembly comprises a locking block and a traction plate; the locking block and the traction plate are matched by a first traction structure, and the traction plate and the driving plate are matched by a second traction structure; when the first part of the product is formed, the locking block is adapted to be engaged with the locking groove arranged on the first movable core; when the second part of the product needs to be formed, the driving plate is adapted to first drive the traction plate to drive the locking block and the locking groove to separate, and then drive the second forming module to slide along the first guide groove.

[0013] Preferably, the second traction structure comprises a traction block and a traction groove matched by sliding with each other; the traction block is arranged on the traction plate, and the traction groove is arranged on the driving plate; the traction groove comprises a first sliding groove and a second sliding groove, the second sliding groove is parallel to the opening direction, and the first sliding groove is inclined to the second sliding groove; the traction block is adapted to drive the locking block and the locking groove to separate by sliding along the first sliding groove; when the second part of the product is formed and the product is demolded, the traction block is adapted to slide along the second sliding groove, so that the locking assembly is kept stationary.

[0014] Preferably, the driving mechanism further comprises a driving device, a top plate and a top rod assembly; the top plate and the top rod assembly are slidingly installed on the fixed mold in parallel to the opening direction of the mold; the bottom and middle part of the top rod assembly are respectively provided with a first fixed plate and a second fixed plate, the top of the top rod assembly is adapted to cooperate with the first cavity, the driving plate is fixedly installed on the top plate; the driving device is fixedly installed on the side of the fixed mold, and the driving device is adapted to drive the top plate to slide in the opening direction of the mold through the output end; when the product is formed, the top plate is adapted to slide between the first fixed plate and the second fixed plate; when the product is demolded, the top plate is adapted to drive the top rod assembly to slide in the opening direction of the mold synchronously by abutting against the second fixed plate, so as to lift the formed product to separate from the first forming mold and the second forming mold; when resetting, the driving device is adapted to drive the top plate to move reversely, and then the top rod assembly is adapted to reset by gravity and / or abutting against the top plate and the first fixed plate.

[0015] Compared with the prior art, the application has the beneficial effects that:

[0016] (1) Compared with the traditional double-mold forming mode, the application can effectively reduce the design cost of the mold by simultaneously forming two parts of different materials of the product through one set of mold.

[0017] (2) Compared with the traditional double-mold forming mode, the application can omit the mold changing time of the double mold through one set of mold, thereby improving the production efficiency of the product.

[0018] (3) Compared with the traditional double-mold forming mode, the application can ensure that the processing precision of the product is consistent, thereby improving the forming quality of the product. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of a double-color rubber-coated product in the prior art.

[0020] Figure 2 It is a whole structural schematic view of the application.

[0021] Figure 3 It is a top view structural schematic view of the fixed mold in the application.

[0022] Figure 4 It is a whole sectional view structural schematic view of the application.

[0023] Figure 5 It is a structural schematic view of the driving plate in the application.

[0024] Figure 6 It is a structural schematic view of the second forming core in the application.

[0025] Figure 7 The structure diagram of the second forming module in the application.

[0026] Figure 8 The structure diagram of the first movable core in the application.

[0027] Figure 9 The structure diagram of the second movable core in the application.

[0028] Figure 10 The exploded view of the locking assembly in the application.

[0029] Figure 11 The schematic diagram of the first part injection of the product in the application.

[0030] Figure 12 The schematic diagram of the unlocking of the second forming module in the application.

[0031] Figure 13 The schematic diagram of the second part injection of the product in the application.

[0032] Figure 14 The schematic diagram of the opening of the second forming module in the application.

[0033] Figure 15 The schematic diagram of the complete demolding of the product after the opening of the application.

[0034] Figure 16 The schematic diagram of the cooperation structure of the ejector rod assembly and the ejector plate in the application.

[0035] In the figure: product 100, first part 110, second part 120, movable die 210, fixed die 220, driving mechanism 3, driving device 31, ejector plate 32, driving plate 33, first driving surface 331, second driving surface 332, avoiding slot 333, traction slot 334, first sliding slot 3341, second sliding slot 3342, ejector rod assembly 34, first fixed plate 341, second fixed plate 342, first forming module 4, first cavity 400, first shaping core 41, second shaping core 42, first guide slot 421, second guide slot 422, second forming module 5, second cavity 500, first movable core 51, positioning slot 510, first forming slot 511, first through hole 512, third driving surface 513, sliding block 514, first mounting slot 515, locking slot 516, second movable core 52, second forming slot 521, second through hole 522, driving block 523, second mounting slot 524, locking assembly 6, locking block 61, clamping block 611, traction plate 62, clamping slot 621, through slot 622, traction block 623, first spring 710, second spring 720. DETAILED DESCRIPTION

[0036] Hereinafter, the present application will be further described in conjunction with the specific embodiments, and it should be noted that the embodiments described below or technical features between the embodiments can be combined with each other to form new embodiments without conflict.

[0037] In the description of the present application, it should be noted that for orientation words such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

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

[0039] One preferred embodiment of the present application is shown in Figure 2 and Figure 16 A forming mold for a double-color coated product, comprising a movable mold 210, a fixed mold 220, a first forming mold set 4, a second forming mold set 5, and a driving mechanism 3. The first forming mold set 4 is mounted on the movable mold 210 and the fixed mold 220, respectively, and the first forming mold set 4 is provided with a first cavity 400 for forming a first part 110 of the product 100. The second forming mold set 5 is mounted on the fixed mold 220, and the second forming mold set 5 is provided with a second cavity 500 for forming a second part 120 of the product 100. The driving mechanism 3 is mounted on the fixed mold 220 and cooperates with the first forming mold set 4 and the second forming mold set 5, respectively.

[0040] Initially, the movable mold 210 and the fixed mold 220 are overlapped with each other; at this time, the first cavity 400 of the first forming mold set 4 and the second cavity 500 of the second forming mold set 5 are offset from each other. Thus, when forming, the first part 110 of the product 100 can be formed by the first cavity 400 of the first forming mold set 4 first, and then the driving mechanism 3 can drive the second forming mold set 5 to approach the first forming mold set 4, so that the second cavity 500 of the second forming mold set 5 is aligned with the first cavity 400 of the first forming mold set 4, thereby forming the second part 120 connected to the first part 110 of the product 100.

[0041] After the product 100 is completely formed, the movable mold 210 and the fixed mold 220 can be separated from each other to open the mold, so that the first forming mold set 4 moves synchronously with the movable mold 210 to separate the first cavity 400, so that the first part 110 of the product 100 can be partially demolded. Subsequently, the driving mechanism 3 can first drive the second cavity 500 to be separated to realize the partial demolding of the second part 120 of the product 100, and then drive the formed product 100 to completely separate from the first forming mold set 4 and the second forming mold set 5 respectively, and finally realize the complete demolding of the product 100.

[0042] It can be understood that, since the first part 110 and the second part 120 of the product 100 are made of different materials, the injection molding of different materials needs to be performed twice in the mold during the forming. The forming sequence of the first part 110 and the second part 120 can be selected according to actual needs, and in the present application, the first part 110 of the product 100 is formed first, and then the second part 120 of the product 100 is formed.

[0043] Therefore, when the first part 110 of the product 100 is injection molded, in order to avoid the plastic material for forming the first part 110 from flowing into the second cavity 500, the second cavity 500 needs to be deviated from the first cavity 400. Subsequently, when the second part 120 of the product 100 is injection molded, the second cavity 500 only needs to be moved to be aligned with the first cavity 400. And when the product 100 is demolded, since the second part 120 of the product 100 is thin, the connecting surface of the second part 120 with the first part 110 is small, and the contact area of the formed second part 120 with the second cavity 500 is large, so that when the product 100 is demolded, if the demolding is directly performed, the first part 110 and the second part 120 of the product 100 are prone to be separated. Therefore, in order to ensure the forming quality of the product 100, after the product 100 is formed, the second part 120 of the product 100 can be partially demolded by separating the second cavity 500, so that the subsequent demolding can be smooth and the quality of the demolded product 100 can be ensured.

[0044] Compared with the traditional double-mold forming mode, the present application can simultaneously form two parts of the product 100 made of different materials by using one set of mold, which can effectively reduce the design cost of the mold. At the same time, the mold changing process between the double molds is not needed, so that the production efficiency of the product 100 can be effectively improved. Moreover, one set of mold can ensure that the machining precision of the product 100 is consistent, thereby improving the forming quality of the product 100.

[0045] In one embodiment of the present application, as shown in FIG. 1, the product 100 is formed by using a mold, and the mold comprises a first forming mold set 4 and a second forming mold set 5. Figure 4 and Figures 11 to 15As shown, the first molding module 4 comprises a first forming core 41 and a second forming core 42. The first forming core 41 is installed on the movable die 210, and the second forming core 42 is installed on the fixed die 220. When the fixed die 220 and the movable die 210 are closed, the opposite end faces of the first forming core 41 and the second forming core 42 can be matched with each other to form a first cavity 400, and then to form the first part 110 of the molded product 100. When the mold is opened, the first forming core 41 can move away from the second forming core 42 on the fixed die 220 along the opening direction of the movable die 210, and then to perform a semi-ejection on the first part 110 of the molded product 100.

[0046] As shown in one of the embodiments of the present application, Figure 4 and Figures 11 to 15 The fixed die 220 is provided with a first guide groove 421 which is in communication with the first cavity 400. The second molding module 5 comprises a first movable forming core 51 and a second movable forming core 52. The first movable forming core 51 and the second movable forming core 52 can be matched with each other through the heads to form a second cavity 500. The heads of the first movable forming core 51 and the second movable forming core 52 are located in the first guide groove 421. When the first part 110 of the product 100 is molded, the first movable forming core 51 can seal the first cavity 400 through the head. After the molding of the first part 110 of the product 100 is completed, the driving mechanism 3 can drive the first movable forming core 51 and the second movable forming core 52 to move synchronously along the first guide groove 421 until the second cavity 500 and the first cavity 400 are aligned and communicated. After the mold is opened, the driving mechanism 3 can drive the second movable forming core 52 to perform a separation movement relative to the first movable forming core 51, and then to perform a semi-ejection on the second part 120 of the molded product 100.

[0047] It can be understood that the first guide groove 421 can be directly provided on the fixed die 220, or can be provided on the second forming core 42. In order to facilitate the processing, the first guide groove 421 is preferably provided on the second forming core 42 in the present application, and the extension direction of the first guide groove 421 is parallel to the connecting surface of the first part 110 and the second part 120 of the product 100.

[0048] In the present embodiment, the installation modes of the first movable forming core 51 and the second movable forming core 52 are various, including but not limited to the following two modes.

[0049] Installation mode one: as shown in Figure 4 , Figure 7 , Figure 8 and Figures 11 to 15 The first movable forming core 51 is slidably matched with the sliding groove provided on the fixed die 220 through the sliding blocks 514 provided on both sides. The head of the first movable forming core 51 is provided with a positioning groove 510, and the second movable forming core 52 is installed on the first movable forming core 51 and slidably matched with the positioning groove 510.

[0050] Specifically, as shown in Figures 7 to 9 The first movable core 51 is provided with a first forming groove 511 at the end of the positioning groove 510, and the second movable core 52 is provided with a second forming groove 521 at the head. The first movable core 51 and the second movable core 52 are matched through the first forming groove 511 and the second forming groove 521 to form the required second cavity 500.

[0051] The second installation method: the first movable core 51 and the second movable core 52 are both slidingly installed in the fixed mold 220. The first movable core 51 is provided with a positioning groove 510, and the second movable core 52 can be matched with the head and the positioning groove 510 to form the required second cavity 500.

[0052] It can be understood that for the above two installation methods, those skilled in the art can select according to actual needs. For the convenience of understanding, the installation method of the second forming mold set 5 in the subsequent content adopts the above installation method one.

[0053] One of the embodiments of the present application, as shown in Figure 4 , Figure 5 and Figures 11 to 15 The driving mechanism 3 includes a driving plate 33. The driving plate 33 can be slidingly installed in the fixed mold 220 along the direction parallel to the mold opening, and the driving plate 33 can be matched with the first movable core 51 through the first driving structure; the driving plate 33 can be matched with the second movable core 52 through the second driving structure and the back-off structure. When the second part 120 of the product 100 needs to be formed, the driving plate 33 can move along the mold opening direction to drive the first movable core 51 and the second movable core 52 to slide along the first guide groove 421 simultaneously through the first driving structure and the second driving structure respectively, until the second cavity 500 of the second forming mold set 5 and the first cavity 400 of the first forming mold set 4 are aligned. After the mold is opened, the driving plate 33 can continue to move along the mold opening direction to drive the second movable core 52 to perform a separation movement relative to the first movable core 51 through the back-off structure, and the first movable core 51 remains stationary during this process.

[0054] In this embodiment, as shown in Figure 5 , Figure 8 and Figures 11 to 15As shown, the first movable core 51 and the fixed mold 220 are elastically connected through the first spring 710, and the extension direction of the first spring 710 is parallel to the extension direction of the first guide groove 421. The first movable core 51 is provided with the first through hole 512 matched with the driving plate 33. The first driving structure includes the first driving surface 331 and the third driving surface 513 respectively arranged in the first through hole 512 and the driving plate 33, and the first driving surface 331 and the third driving surface 513 are both arranged obliquely. When the forming of the second part 120 of the product 100 is needed, the driving plate 33 moves in the opening direction, so that the first driving surface 331 can press the third driving surface 513 to drive the first movable core 51 to slide along the first guide groove 421 and stretch or compress the first spring 710. When resetting, the driving plate 33 moves reversely, so that the first driving surface 331 moves away from the third driving surface 513, and then the first movable core 51 can reset under the elastic force of the first spring 710.

[0055] In the embodiment, as shown in Figure 5 、 Figure 9 and Figures 11 to 15 , the second movable core 52 and the fixed mold 220 are elastically connected through the second spring 720, and the extension direction of the second spring 720 is parallel to the extension direction of the first guide groove 421. The second movable core 52 is provided with the second through hole 522 matched with the driving plate 33. The second driving structure includes the driving block 523 and the second driving surface 332; the driving block 523 is wedge-shaped and arranged on the side wall of the second through hole 522, and the second driving surface 332 is arranged on the driving plate 33; when the forming of the second part 120 of the product 100 is needed, the driving plate 33 moves in the opening direction, so that the second driving surface 332 can press the driving block 523 to drive the second movable core 52 to slide along the first guide groove 421 and stretch or compress the second spring 720. When resetting, the driving plate 33 moves reversely, so that the second driving surface 332 moves away from the driving block 523, and then the second movable core 52 can reset under the elastic force of the second spring 720.

[0056] Specifically, as shown in Figure 5 、 Figures 11 to 15As shown, the width of the first through hole 512 and the second through hole 522 is greater than or equal to the width of the driving plate 33. The second driving surface 513 is located at the end of the first through hole 512 away from the second movable core 52, and the second driving surface 513 is inclined towards the direction in which the width of the first through hole 512 increases. The driving block 523 is located inside the end of the second through hole 522 close to the first movable core 51, and the driving block 523 is wedge-shaped protruding towards the center of the second through hole 522. The first driving surface 331 and the second driving surface 332 are sequentially arranged along the front of the driving plate 33. The first driving surface 331 and the second driving surface 332 are both inclined towards the direction in which the width of the driving plate 33 decreases.

[0057] As shown in the embodiment, Figure 5 , Figures 11 to 15 The retreat structure includes the driving block 523, the second spring 720, and the avoidance groove 333, which is arranged on the driving plate 33 adjacent to the second driving surface 332. After the mold is opened, the driving plate 33 continues to move in the opening direction until the second driving surface 332 passes over the driving block 523, so that the second movable core 52 moves back under the elastic force of the second spring 720 to abut against the driving block 523 and the avoidance groove 333. In this process, the first movable core 51 remains stationary by abutting against the driving plate 33. The length of the avoidance groove 333 is greater than the length of the driving block 523, so that during the demolding process of the product 100 by the driving mechanism 3, the second movable core 52 remains stationary by sliding along the avoidance groove 333 through the driving block 523.

[0058] Specifically, as shown in the embodiment, Figure 5 , Figure 11 and Figure 15 , assuming that the opening direction is upward, the side of the driving plate 33 close to the second cavity 500 is the first side, and the side of the driving plate 33 away from the second cavity 500 is the second side. Then one end of the first driving surface 331 is located on the first side of the driving plate 33, and is inclined upward towards the second side of the driving plate 33; the other end of the first driving surface 331 is flush with one end of the second driving surface 332, and the second driving surface 332 is also inclined upward towards the second side of the driving plate 33. The first driving surface 331 and the second driving surface 332 are arranged with a spacing therebetween, so that the avoidance groove 333 is arranged between the first driving surface 331 and the second driving surface 332, and there is a spacing between the bottom of the avoidance groove 333 and the outer end of the second driving surface 332. Therefore, after the driving block 523 passes over the second driving surface 332 and is matched with the avoidance groove 333, the second movable core 52 can retreat under the elastic force of the second spring 720 to achieve the semi-demolding of the second part 120 of the product 100.

[0059] It can be understood that the avoidance groove 333 is inclinedly arranged close to the side of the second driving surface 332, and the driving block 523 is inclinedly arranged on both sides in the opening direction. The lower side of the driving block 523 in the opening direction is used for cooperating with the second driving surface 332, and the upper side of the driving block 523 in the opening direction is used for cooperating with the side of the avoidance groove 333 close to the second driving surface 332, so as to ensure that the resetting process of the driving plate 33 can be smoothly carried out.

[0060] In the embodiment, the first spring 710 and the second spring 720 can be respectively installed at the front of the first movable core 51 and the second movable core 52, respectively installed at the rear of the first movable core 51 and the second movable core 52, or respectively installed at the side of the first movable core 51 and the second movable core 52. If the first spring 710 and the second spring 720 are respectively installed at the front of the first movable core 51 and the second movable core 52, the first spring 710 and the second spring 720 can be compressed and deformed when the driving plate 33 drives the first movable core 51 and the second movable core 52 to slide along the first guide groove 421; if the first spring 710 and the second spring 720 are respectively installed at the rear of the first movable core 51 and the second movable core 52, the first spring 710 and the second spring 720 can be stretched and deformed when the driving plate 33 drives the first movable core 51 and the second movable core 52 to slide along the first guide groove 421; if the first spring 710 and the second spring 720 are respectively installed at the side of the first movable core 51 and the second movable core 52, the first spring 710 and the second spring 720 can be compressed and deformed or stretched and deformed when the driving plate 33 drives the first movable core 51 and the second movable core 52 to slide along the first guide groove 421. In order to facilitate installation, the first spring 710 and the second spring 720 are respectively installed at the rear of the first movable core 51 and the second movable core 52 in the embodiment.

[0061] Specifically, as shown in Figure 7 、 Figures 11 to 15 The rear of the first movable core 51 and the second movable core 52 is provided with at least one first installation groove 515 and at least one second installation groove 524, the number of the first spring 710 corresponds to the number of the first installation groove 515, and the number of the second spring 720 corresponds to the number of the second installation groove 524. One end of the first spring 710 is connected with the first installation groove 515, and the other end of the first spring 710 is connected with the fixed mold 220; one end of the second spring 720 is connected with the second installation groove 524, and the other end of the second spring 720 is connected with the fixed mold 220.

[0062] It is understandable that by setting the first mounting slot 515 and the second mounting slot 524, sufficient installation space can be ensured for the first spring 710 and the second spring 720; and the number and type of the first spring 710 and the second spring 720 can be selected according to the elasticity requirement. When the elasticity requirement is large, multiple first springs 710 and second springs 720 can be set, or rectangular springs can be selected to increase the elasticity.

[0063] During the molding of the first part 110 of product 100, a gap exists between the second molding module 5 and the first guide groove 421 to facilitate subsequent movement. At this time, the degree of freedom of movement of the second molding module 5 away from the first guide groove 421 is restricted by the engagement of the drive block 33 with the first through hole 512 and the second through hole 522, respectively; while the degree of freedom of movement of the second molding module 5 towards the first guide groove 421 is restricted only by the first spring 710 and the second spring 720. The restriction by the drive block 33 is a rigid restriction, while the restriction by the springs is a flexible restriction. This may cause vibration in the second molding module 5 towards the first guide groove 421, resulting in flash at the connection between the first part 110 and the second part 120 of product 100.

[0064] To ensure the molding quality of product 100, the second molding module 5 needs to be locked by locking component 6 when molding the first part 110 of product 100.

[0065] One embodiment of this application, such as Figure 4 , Figure 5 and Figures 10 to 15 As shown, the locking component 6 is installed on the fixed mold 220. The locking component 6 includes a locking block 61 and a traction plate 62. The locking block 61 and the traction plate 62 cooperate through a first traction structure, and the traction plate 62 and the drive plate 33 cooperate through a second traction structure. When the first part 110 of the product 100 is being formed, the locking block 61 can engage with the locking groove 516 provided on the first moving core 51, thereby locking the second forming module 5. When the second part 120 of the product 100 needs to be formed, the drive plate 33 can first drive the traction plate 62 to separate the locking block 61 and the locking groove 516 to unlock the second forming module 5, and then drive the second forming module 5 to slide along the first guide groove 421.

[0066] It is understandable that the second molding module 5 can be locked directly through the cooperation of the locking block 61 and the drive plate 33. However, in order to facilitate processing and reduce the complexity of the mating structure, a traction plate 62 can be set for transitional traction. The setting position of the locking groove 516 can be selected according to actual needs. In this embodiment, the locking groove 516 is preferably set at the lower end of the head of the first moving core 51.

[0067] Specifically, as shown in Figure 4 and Figures 11 to 15 , the lock block 61 can be arranged in a direction parallel to the driving plate 33, and the traction plate 62 can be arranged in a direction perpendicular to the driving plate 33. The lock block 61 is matched with the top and the lock slot 516, and the lock block 61 is matched with the end of the traction plate 62 through the first traction structure. In order to ensure that the traction plate 62 is uniformly stressed, a through slot 622 can be arranged on the traction plate 62, so that the driving plate 33 can pass through the through slot 622 and be matched with the second traction structure and the traction plate 62, and then the driving plate 33 can drive the traction plate 62 to move perpendicular to the opening direction by moving in the opening direction, and drive the lock block 61 to move parallel to the driving plate 33 in the opposite direction by the horizontal movement of the traction plate 62, until the lock block 61 and the lock slot 516 are separated, to achieve the unlocking of the second forming die set 5.

[0068] It can be understood that when the first movable core 51 and the second movable core 52 cooperate to form the second cavity 500, since the second movable core 52 is slidingly installed on the first movable core 51, and the head of the second movable core 52 abuts against the positioning groove 510 of the first movable core 51, and the tail of the second movable core 52 abuts against the driving plate 33, so that when the first movable core 51 is locked by the lock block 61, the second movable core 52 is also in a locked state.

[0069] At the same time, in order to ensure that the lock block 61 can smoothly slide, a second guide groove 422 parallel to the opening direction can be arranged on the fixed die 220. The second guide groove 422 can be directly arranged on the fixed die 220, but in order to facilitate processing, the second guide groove 422 can also be arranged on the second fixed core 42, so that the second guide groove 422 can be communicated with the first guide groove 421. Therefore, when the first movable core 51 slides along the first guide groove 421, the lock block 61 slides along the second guide groove 422, and then the locking of the lock block 61 to the first movable core 51 can be realized.

[0070] In this embodiment, as shown in Figures 10 to 15 , the first traction structure includes an inclined sliding matched clamping block 611 and a clamping groove 621. The clamping block 611 can be arranged at the end of the lock block 61, and the clamping groove 621 can be arranged at the end of the traction plate 62; or the clamping block 611 is arranged at the end of the traction plate 62, and the clamping groove 621 is arranged at the end of the lock block 61. When the driving plate 33 slides in the opening direction, the driving plate 33 can drive the traction plate 62 to slide perpendicular to the opening direction through the second traction structure, so that through the sliding matching of the clamping block 611 and the clamping groove 621, the lock block 61 can be driven to move parallel to the opening direction and away from the lock slot 516 to achieve unlocking.

[0071] In this embodiment, as shown in Figure 5 and Figures 10 to 15 The second traction structure includes traction blocks 623 and traction grooves 334 that slide with each other. The traction blocks 623 are arranged on the side walls of the through grooves 622 on the traction plate 62, and the traction grooves 334 are arranged on the side walls of the driving plate 33. The traction grooves 334 include first sliding grooves 3341 and second sliding grooves 3342. The second sliding grooves 3342 are parallel to the direction of mold opening, and the first sliding grooves 3341 are inclined to the second sliding grooves 3342. Initially, the traction blocks 623 are located at the end of the first sliding grooves 3341, so that when the second forming mold set 5 is unlocked, the driving plate 33 can move in the direction of mold opening, so that the traction plate 62 can be driven to move through the sliding fit of the first sliding grooves 3341 and the traction blocks 623, thereby realizing the separation of the locking blocks 61 and the locking grooves 516. When the second part 120 of the product 100 is formed and the product 100 is demolded, the traction blocks 623 can slide along the second sliding grooves 3342, so that the locking assembly 6 remains stationary.

[0072] It can be understood that the second forming mold set 5 only needs to be unlocked before the second part 120 of the product 100 is formed, and during the subsequent forming of the second part 120 and the demolding of the product 100, the locking assembly 6 only needs to remain stationary, so that the total stroke of the locking assembly 6 is prevented from being too large to interfere. In order to ensure the stationarity of the locking assembly 6, the traction grooves 334 can be divided into the first sliding grooves 3341 and the second sliding grooves 3342. When the driving plate 33 slides, the relative distance between the first sliding grooves 3341 and the traction blocks 623 always changes, so that the locking assembly 6 can be unlocked; and the relative distance between the second sliding grooves 3342 and the traction blocks 623 remains unchanged, so that the locking assembly 6 can remain stationary.

[0073] In one embodiment of the present application, as shown in Figure 2 , Figure 3 , Figure 4 and Figure 16 The driving mechanism 3 further includes a driving device 31, a top plate 32, and a top rod assembly 34. The top plate 32 and the top rod assembly 34 are both slidingly installed in the fixed mold 220 in a direction parallel to the mold opening; the bottom and middle parts of the top rod assembly 34 are respectively provided with first and second fixed plates 341 and 342, and the top part of the top rod assembly 34 can cooperate with the first cavity 400 to drive the formed product 100 to be demolded. The driving plate 33 is fixedly installed on the top plate 32; the driving device 31 is fixedly installed on the side of the fixed mold 220, and the driving device 31 can drive the top plate 32 to slide in the direction of mold opening through the output end.

[0074] When product 100 is being molded, the drive device 31 can drive the top plate 32 to slide along the fixed mold 220, thereby driving the drive plate 33 to slide along the mold opening direction; and the sliding range of the top plate 32 is located between the first fixed plate 341 and the second fixed plate 342 of the ejector assembly 34. When product 100 is being demolded, the drive device 31 can continue to drive the top plate 32 to slide along the mold opening direction, thereby driving the ejector assembly 34 to slide synchronously along the mold opening direction through the abutment of the top plate 32 and the second fixed plate 342 of the ejector assembly 34, thereby lifting the molded product 100 to separate it from the first molding module 4 and the second molding module 5. When resetting, the drive device 31 can drive the top plate 32 to move in the opposite direction, thereby allowing the ejector assembly 34 to reset through gravity and / or the abutment of the top plate 32 and the first fixed plate 341.

[0075] Understandably, during the molding process of product 100, the ejector assembly 34 needs to remain stationary to avoid interference with the molding of product 100. The drive device 31 is conventional technology in the art; common drive devices 31 include cylinders, hydraulic cylinders, and linear motors.

[0076] To facilitate understanding, the entire molding process of product 100 will be described in detail below.

[0077] (1) Initially, such as Figure 4 As shown, the moving mold 210 and the fixed mold 220 overlap each other, so that the first molding core 41 and the second molding core 42 cooperate to form the first cavity 400. At this time, the second cavity 500 formed by the cooperation of the first moving core 51 and the second moving core 52 is offset from the first cavity 400 by a deviation of Y, so that the first moving core 51 closes the first cavity 400 through the side wall of the head.

[0078] Simultaneously, the first through hole 512 of the first moving core 51 and the second through hole 522 of the second moving core 52 are aligned. The upper part of the drive plate 33 extends into the first through hole 512 and the second through hole 522. The drive plate 33 can abut against one side of the first through hole 512 and the end of the drive block 523 on the second through hole 522. A distance of value X exists between the first drive surface 331 and the third drive surface 513 on the drive plate 33, and between the second drive surface 332 and the drive block 523, in the mold opening direction. At this time, both the first spring 710 and the second spring 720 are in a stretched state, and the locking assembly 6 and the first moving core 51 are also in a locked state. Furthermore, the traction block 623 on the traction plate 62 is located at the end of the first slide groove 3341 on the traction groove 334.

[0079] (2) Molding the first part 110 of product 100, such as... Figure 11As shown, injection molding is performed into the first cavity 400 to form the first part 110 of the product 100.

[0080] (3) Unlock the second molding module 5, such as Figures 11 to 12 As shown, the drive plate 33 moves a distance X along the mold opening direction under the drive of the drive device 31. This allows the first drive surface 331 and the second drive surface 332 of the drive plate 33 to come into contact with the third drive surface 513 and the drive block 523, respectively.

[0081] Simultaneously, the traction block 623 can slide along the end of the first slide groove 3341 of the traction groove 334 to the beginning of the second slide groove 3342. During this process, the traction plate 62 can drive the locking block 61 away from the locking groove 516 to unlock the second molding module 5, and the final interval distance between the locking block 61 and the locking groove 516 is H.

[0082] (4) Molding the second part 120 of product 100, such as... Figures 12 to 13 As shown, the drive plate 33 continues to move along the mold opening direction under the drive of the drive device 31 until the first drive surface 331 and the second drive surface 332 of the drive plate 33 just pass over the third drive surface 513 of the first moving core 51 and the lower wedge surface of the drive block 523 of the second moving core 52, respectively. During this process, the second molding module 5 can slide along the first guide groove 421 by a distance Y until the second cavity 500 is connected to the first cavity 400; during this process, the first spring 710 and the second spring 720 are stretched. Subsequently, the second part 120 of the product 100 is formed by injection molding into the second cavity 500.

[0083] (5) After the product is fully formed, the mold is opened, such as... Figure 14 As shown, the moving mold 210 and the fixed mold 220 are separated, so that the first mold core 41 can move synchronously with the moving mold 210, so that the first cavity 400 is separated, thereby realizing the semi-demolding of the first part 110 of the product 100.

[0084] (6) Perform partial demolding on the second part 120 of the molded product 100, such as... Figure 14 As shown, the drive plate 33 continues to move along the mold opening direction under the drive of the drive device 31, so that the drive plate 33 adapts to the drive block 523 of the second moving core 52 through the clearance groove 333. Thus, the second moving core 52 can move a distance L in the direction away from the second cavity 500 under the elastic force of the second spring 720, thereby separating the second cavity 500 to achieve partial demolding of the second part 120 of the product 100. During this process, the drive plate 33 can maintain the first moving core 51 stationary through the sliding fit between the first side and the first through hole 512.

[0085] (7) The product 100 after molding is completely demolded, as shown, the driving device 31 can drive the top rod assembly 34 to move along the opening direction through the top plate 32, so as to lift the semi-demolded product 100 to completely separate from the first molding die set 4 and the second molding die set 5. In this process, the driving plate 33 also continues to move along the opening direction, the driving plate 33 can continue to slide with the first through hole 512 through the first side, so as to ensure that the first movable core 51 remains stationary; at the same time, the driving plate 33 can slide along the avoidance slot 333 through the driving block 523, so as to ensure that the second movable core 52 also remains stationary. Figures 14 to 15

[0086] (8) Reset, the driving device 31 can drive the driving plate 33 to move reversely, so that the driving plate 33 can first drive the second movable core 52 to move along the direction of the first guide slot 421 by a distance L, so that the second movable core 52 is again matched with the first movable core 51 to form the second cavity 500. Subsequently, with the continuous reverse movement of the driving plate 33, the second molding die set 5 as a whole can slide along the first guide slot 421 by a distance Y away from the first cavity 400 under the elastic force of the first spring 710 and the second spring 720. Finally, with the continuous reverse movement of the driving plate 33 by a distance X, so that the traction slot 334 drives the lock block 61 and the lock slot 516 of the first movable core 51 to cooperate through the cooperation of the first sliding groove 3341 and the traction block 623.

[0087] It can be understood that in the above (4) to (7) processes, the traction block 623 slides along the second sliding groove 3342 of the traction slot 334.

[0088] The above describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, the above embodiments and descriptions in the specification are only the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.​

Claims

1. A molding die for a two-color overmolded product, characterized by, The application relates to a moulding device, comprising: a movable mould and a fixed mould; a first moulding module installed on the movable mould and the fixed mould respectively for moulding a first part of a product; a second moulding module installed on the fixed mould for moulding a second part of the product; and a driving mechanism installed on the fixed mould and matched with the first moulding module and the second moulding module respectively. When moulding, the first moulding module is adapted to mould the first part of the product through a first cavity, and then the driving mechanism drives the second moulding module to move towards the first moulding module, so that the second moulding module is aligned with the first cavity through a second cavity to mould the second part of the product. When the first cavity is separated for mould opening, the driving mechanism is adapted to first drive the second cavity to separate, and then drive the moulded product to separate from the first moulding module and the second moulding module respectively. The fixed mould is provided with a first guide groove communicated with the first cavity; the second moulding module comprises a first movable mould core and a second movable mould core; the first movable mould core and the second movable mould core are adapted to match with each other through heads to form the second cavity; the heads of the first movable mould core and the second movable mould core are located in the first guide groove; When moulding the first part of the product, the first movable mould core is adapted to seal the first cavity through the head; When the moulding of the first part of the product is completed, the driving mechanism is adapted to drive the first movable mould core and the second movable mould core to move along the first guide groove synchronously until the second cavity is aligned with the first cavity and communicated; After mould opening, the driving mechanism is adapted to drive the second movable mould core to perform a separation movement relative to the first movable mould core, thereby performing a half demoulding on the second part of the moulded product; The driving mechanism comprises a driving plate; the driving plate is adapted to match with the first movable mould core through a first driving structure; The driving plate is adapted to match with the second movable mould core through a second driving structure and a return structure; When the moulding of the second part of the product is needed, the driving plate is adapted to move in a mould opening direction, so that the first movable mould core and the second movable mould core are synchronously driven to slide along the first guide groove through the first driving structure and the second driving structure respectively; After mould opening, the driving plate is adapted to continue to move in the mould opening direction, so that the second movable mould core is driven to perform a separation movement relative to the first movable mould core through the return structure; The first movable mould core is elastically connected with the fixed mould through a first spring; the first movable mould core is provided with a first through hole matched with the driving plate; the first driving structure comprises a first driving surface arranged on the driving plate and a third driving surface arranged on the first through hole, and the first driving surface and the third driving surface are both arranged to be inclined; When the moulding of the second part of the product is needed, the driving plate is adapted to extrude the third driving surface through the first driving surface, so as to drive the first movable mould core to slide along the first guide groove and stretch or compress the first spring. ​ When resetting, the driving plate moves reversely, and the first movable core is adapted to reset under the elastic force of the first spring; The second movable core is elastically connected with the fixed die through a second spring, and the second movable core is provided with a second through hole matched with the driving plate; the second driving structure comprises a driving block and a second driving surface; the driving block is wedge-shaped and is arranged on the side wall of the second through hole, and the second driving surface is arranged on the driving plate; When the second part of the product needs to be formed, the driving plate is adapted to press the driving block through the second driving surface to drive the second movable core to slide along the first guide groove and stretch or compress the second spring; When resetting, the driving plate moves reversely, and the second movable core is adapted to reset under the elastic force of the second spring; The retreat structure comprises the driving block, the second spring and an avoiding slot arranged on the driving plate and adjacent to the second driving surface; After the mold is opened, the driving plate continues to move in the opening direction until the second driving surface passes the driving block, so that the second movable core resets under the elastic force of the second spring and moves to the position where the driving block and the avoiding slot abut; In this process, the first movable core remains stationary through abutting with the driving plate; The length of the avoiding slot is greater than the length of the driving block, so that the second movable core remains stationary through sliding of the driving block along the avoiding slot during the product demolding process of the driving mechanism.

2. The molding die for a two-color overmolded product according to claim 1, characterized by: The first forming die set comprises a first fixed core and a second fixed core; the first fixed core is installed on the movable die, and the second fixed core is installed on the fixed die; when the fixed die and the movable die are closed, the first fixed core and the second fixed core cooperate with each other to form the first cavity, thereby forming the first part of the product; when the mold is opened, the first fixed core is adapted to move away from the second fixed core on the fixed die with the movable die, thereby performing semi-demolding on the first part of the formed product.

3. A two-colour overmoulded product forming mould according to claim 1 or 2, characterised in that: The fixed die is further provided with a locking assembly, the locking assembly comprises a locking block and a traction plate; the locking block and the traction plate are matched through a first traction structure, and the traction plate and the driving plate are matched through a second traction structure; when the first part of the product is formed, the locking block is adapted to be clamped with the locking slot arranged on the first movable core; when the second part of the product needs to be formed, the driving plate is adapted to first drive the traction plate to drive the locking block and the locking slot to separate, and then drive the second forming die set to slide along the first guide groove.

4. The molding die for a two-color overmolded product according to claim 3, characterized by: The second traction structure comprises traction blocks and traction grooves which are in mutual sliding fit; the traction blocks are arranged on the traction plate, and the traction grooves are arranged on the driving plate; the traction grooves comprise first sliding grooves and second sliding grooves, the second sliding grooves are parallel to the direction of mold opening, and the first sliding grooves are inclined to the second sliding grooves; the traction blocks are adapted to drive the lock blocks and the lock grooves to separate by sliding along the first sliding grooves; when the forming of the second part of the product and the demolding of the product are performed, the traction blocks are adapted to slide along the second sliding grooves, so that the locking assembly remains stationary.

5. The molding die for a two-color overmolded product according to claim 1, characterized by: The driving mechanism further comprises a driving device, a top plate and a top rod assembly; the top plate and the top rod assembly are both slidingly installed on the fixed mold in parallel to the direction of mold opening; the bottom and the middle part of the top rod assembly are respectively provided with first and second fixed plates, the top of the top rod assembly is adapted to cooperate with the first cavity, and the driving plate is fixedly installed on the top plate; the driving device is fixedly installed on the side of the fixed mold, and the driving device is adapted to drive the top plate to slide in the direction of mold opening through an output end; When the product is formed, the top plate is adapted to slide between the first and second fixed plates; When the product is demolded, the top plate is adapted to drive the top rod assembly to synchronously slide in the direction of mold opening by abutting against the second fixed plate, so as to lift the formed product to separate from the first and second forming mold groups.

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