Double-color injection molding mechanism and injection molding device

Abstract

The utility model discloses a double-color injection molding mechanism and an injection molding device.The double-color injection molding mechanism comprises a first fixed mold assembly, a second fixed mold assembly and a third fixed mold assembly, the second fixed mold assembly comprises a second injection nozzle piece; the movable mold assembly comprises a forming part; the movable mold assembly is arranged on the rotating chassis, and the rotating chassis is configured to be used for switching the movable mold assembly between the injection molding position of the first fixed mold assembly and the injection molding position of the second fixed mold assembly; wherein the first injection nozzle piece is provided with a first injection position relative to the forming piece, the second injection nozzle piece is provided with a second injection position relative to the forming piece, and the second injection position is different from the first injection position. The first injection position of the first injection nozzle piece is different from the second injection position of the second injection nozzle piece, so that the problem of color mixing at the injection joint of the first color and the second color is effectively avoided, and the yield of products is favorably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection molding, in particular to a double-color injection molding mechanism and an injection molding device. BACKGROUND

[0002] The double-color injection molding mechanism can produce a double-color injection molding product according to the order of first injection and second injection of two different colors of injection molding raw materials.

[0003] In related technologies, a double-color injection molding mechanism usually includes a first fixed mold assembly, a second fixed mold assembly, and a movable mold assembly, wherein the movable mold assembly can be switched between the injection molding positions of the first fixed mold assembly and the second fixed mold assembly. During the injection molding process, the movable mold assembly is first switched to the injection molding position of the first fixed mold assembly to form a first color by injection molding, and then switched to the injection molding position of the second fixed mold assembly to form a second color on the basis of the first color by injection molding. However, the injection molding joint of the first color and the second color is prone to color mixing, resulting in a low yield rate of the product. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a double-color injection molding mechanism and an injection molding device to solve the problem that the injection molding joint of the first color and the second color is prone to color mixing during the injection molding process of the existing double-color injection molding mechanism, resulting in a low yield rate of the product.

[0005] In one embodiment, an injection molding mold is provided, comprising:

[0006] a first fixed mold assembly, the first fixed mold assembly comprising a first base and a first injection nozzle arranged in the first base;

[0007] a second fixed mold assembly, the second fixed mold assembly comprising a second base and a second injection nozzle arranged in the second base;

[0008] a movable mold assembly, the movable mold assembly comprising a third base and a forming piece arranged in the third base, the forming piece being used as a product mold to injection mold the product;

[0009] and a rotating base, the movable mold assembly being arranged in the rotating base, the rotating base being configured to switch the movable mold assembly between the injection molding positions of the first fixed mold assembly and the second fixed mold assembly;

[0010] wherein the first injection nozzle has a first injection position relative to the forming piece, and the second injection nozzle has a second injection position relative to the forming piece, the second injection position being different from the first injection position.

[0011] In one embodiment, the width direction of the movable mold assembly is the first direction, and the forming piece has a first side and a second side arranged away along the first direction.

[0012] In the case that the movable mold assembly is switched to the injection position of the first stationary mold assembly, the first injection position is located at the first side; in the case that the movable mold assembly is switched to the injection position of the second stationary mold assembly, the second injection position is located at the second side.

[0013] In an embodiment, the first stationary mold assembly further comprises a first injection cavity for injecting a semi-finished product, the first base, the third base and the forming piece form the first injection cavity, and the first injection position is located outside the first injection cavity.

[0014] And / or, the second stationary mold assembly further comprises a second injection cavity for injecting a finished product, the second base, the third base and the semi-finished product formed on the forming piece form the second injection cavity, and the second injection position is located inside the second injection cavity.

[0015] In an embodiment, the first injection nozzle comprises a first positioning part and a first injection part.

[0016] The first positioning part is used for being inserted into the forming piece, and the first positioning part is provided with a mounting channel, an axis of the mounting channel is parallel to and does not coincide with an axis of the first positioning part.

[0017] The first injection part is arranged in the mounting channel and at least partially extends towards a top of the forming piece, a first injection channel is formed in the first injection part, and the first injection position is formed at one end of the first injection channel close to the forming piece.

[0018] And / or, the second injection nozzle comprises a second positioning part and a second injection part.

[0019] The second positioning part is used for being inserted into the forming piece.

[0020] The second injection part is arranged inside the second positioning part at a side of the second positioning part away from the forming piece, a second injection channel is formed in the second injection part, and the second injection channel extends from the side of the second positioning part away from the forming piece to a peripheral wall of the second positioning part at a side of the second positioning part close to the forming piece to form the second injection position.

[0021] In an embodiment, the first base comprises a first base plate, a first mold plate and a first mold core.

[0022] The first base plate is provided with a first glue inlet.

[0023] The first mold plate is arranged on the side of the first base plate close to the movable mold assembly, and the first mold plate is provided with a first injection channel, which is in communication with the first glue injection port;

[0024] The first mold core is arranged on the side of the first mold plate close to the movable mold assembly, and the first mold core is provided with a first mounting hole, the first injection nozzle is embedded in the first mounting hole, and the first injection part is in communication with the first injection channel;

[0025] And / or, the second base comprises a second base plate, a second mold plate and a second mold core;

[0026] The second base plate is provided with a second glue injection port;

[0027] The second mold plate is arranged on the side of the second base plate close to the movable mold assembly, and the second mold plate is provided with a second injection channel, which is in communication with the second glue injection port;

[0028] The second mold core is arranged on the side of the second mold plate close to the movable mold assembly, and the second mold core is provided with a second mounting hole, the second injection nozzle is embedded in the second mounting hole, and the second injection part is in communication with the second injection channel.

[0029] In an embodiment, the first injection nozzle is provided with a plurality of first injection nozzles, and the plurality of first injection nozzles are arranged in a first direction;

[0030] The first injection channel comprises a first flow guide channel and a plurality of first shunt channels in communication with the first flow guide channel, the first flow guide channel is arranged on the side of the first mold plate close to the first base, and the first shunt channel penetrates through the first mold plate, and one of the first shunt channels is in communication with one of the first injection parts;

[0031] And / or, the second injection nozzle is provided with a plurality of second injection nozzles, and the plurality of second injection nozzles are arranged in the first direction;

[0032] The second injection channel comprises a second flow guide channel and a plurality of second shunt channels in communication with the second flow guide channel, the second flow guide channel is arranged on the side of the second mold plate close to the second base, and the second shunt channel penetrates through the second mold plate, and one of the second shunt channels is in communication with one of the second injection parts.

[0033] In an embodiment, the movable mold assembly is provided with a guide groove;

[0034] The first mold assembly is provided with a first guide column which is embedded in the guide groove; or, the second mold assembly is provided with a second guide column which is embedded in the guide groove;

[0035] And / or, the double-color injection mechanism further comprises a locking assembly, the locking assembly comprising a locking block, a first fastener and a second fastener;

[0036] The locking block is provided with a first locking hole and a second locking hole;

[0037] The movable mold assembly is provided with a third locking hole at the corresponding position of the first locking hole;

[0038] The first mold assembly or the second mold assembly is provided with a fourth locking hole at the corresponding position of the second locking hole;

[0039] The first fastener is connected with the first locking hole and the third locking hole, and the second fastener is connected with the second locking hole and the fourth locking hole.

[0040] In an embodiment, the double-color injection mechanism further comprises a cooling channel which is arranged in the first mold assembly, and / or the second mold assembly, and / or the movable mold assembly, and is used for communicating with an external cooling device.

[0041] In an embodiment, the cooling channel comprises a connecting pipe and two cooling sections;

[0042] The cooling sections extend along a first direction and the first injection nozzle is located between the two cooling sections, the connecting pipe is arranged on one side of the first mold assembly along the first direction and respectively communicates with the two cooling sections, and one end of the cooling section away from the connecting pipe is used for communicating with an external cooling device;

[0043] And / or, the cooling sections extend along a first direction and the second injection nozzle is located between the two cooling sections, the connecting pipe is arranged on one side of the second mold assembly along the first direction and respectively communicates with the two cooling sections, and one end of the cooling section away from the connecting pipe is used for communicating with an external cooling device;

[0044] And / or, the cooling sections extend along a first direction and the formed part is located between the two cooling sections, the connecting pipe is arranged on one side of the movable mold assembly along the first direction and respectively communicates with the two cooling sections, and one end of the cooling section away from the connecting pipe is used for communicating with an external cooling device.

[0045] In one embodiment, the injection molding device further comprises a first mounting base, a second mounting base, a driving device and the two-color injection molding mechanism.

[0046] The first mounting base and the second mounting base are oppositely arranged, and the second mounting base is movable relative to the first mounting base.

[0047] The first mold assembly and the second mold assembly are arranged on the side of the first mounting base close to the second mounting base.

[0048] The rotating base is rotatably connected to the side of the second mounting base close to the first mounting base.

[0049] The driving device is arranged on the side of the second mounting base away from the rotating base, and is used to drive the rotating base to rotate and drive the second mounting base to move.

[0050] According to the two-color injection molding mechanism of the above embodiment, since the first mold assembly is provided with the first injection nozzle and the second mold assembly is provided with the second injection nozzle, and the first injection position of the first injection nozzle is different from the second injection position of the second injection nozzle. In this way, when the second color is injected on the basis of the first color, the injection material of the second color will not impact the first color area corresponding to the first injection position, and the injection material of the second color can be delayed to contact the first color area corresponding to the first injection position, so that the first color area corresponding to the first injection position is fully solidified, thereby effectively avoiding the problem of color mixing at the injection joint of the first color and the second color, and being beneficial to improving the yield of products. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 FIG. 1 is a structural schematic diagram of the two-color injection molding mechanism in one embodiment;

[0052] Figure 2 FIG. 4 is a schematic diagram of the movable mold assembly switching to the injection position of the first mold assembly in one embodiment;

[0053] Figure 3 FIG. 5 is a schematic diagram of the movable mold assembly switching to the injection position of the second mold assembly in one embodiment;

[0054] Figure 4 FIG. 6 is a schematic diagram of the assembly structure of the movable mold assembly and the first mold assembly in one embodiment;

[0055] Figure 5 FIG. 7 is another schematic diagram of the assembly structure of the movable mold assembly and the first mold assembly in one embodiment;

[0056] Figure 6AA sectional view of the movable mold assembly and the first fixed mold assembly in one embodiment;

[0057] Figure 7 BB sectional view of the movable mold assembly and the first fixed mold assembly in one embodiment;

[0058] Figure 8 A CC cross-sectional view of a movable mold assembly and a first fixed mold assembly in one embodiment;

[0059] Figure 9 DD sectional view of the movable mold assembly and the first fixed mold assembly in one embodiment;

[0060] Figure 10 This is a schematic structural diagram of a first template in an embodiment;

[0061] Figure 11 EE cross-sectional view of the first template in one embodiment;

[0062] Figure 12 This is a schematic structural diagram of a first mold core in an embodiment;

[0063] Figure 13 FF sectional view of the first mold core in one embodiment;

[0064] Figure 14 This is a schematic structural diagram of a third mold core in one embodiment;

[0065] Figure 15 is a GG cross-sectional view of the third mold core in one embodiment;

[0066] Figure 16 A schematic diagram of the assembly structure of the movable mold assembly and the second fixed mold assembly in one embodiment;

[0067] Figure 17 is an HH sectional view of a movable mold assembly and a second fixed mold assembly in one embodiment;

[0068] Figure 18 This is one of the structural schematic diagrams of the first injection nozzle in one embodiment;

[0069] Figure 19 This is a second structural diagram of the first injection nozzle in an embodiment;

[0070] Figure 20 This is one of the structural schematic diagrams of the second injection nozzle in one embodiment;

[0071] Figure 21 This is a second structural diagram of the second injection nozzle in one embodiment;

[0072] Figure 22 This is one of the structural schematic diagrams of a molded part in an embodiment;

[0073] Figure 23 Fig. 2 is a schematic view of a structure of a molded part in an embodiment.

[0074] In which the reference signs are as follows:

[0075] 1 - first fixed mold assembly, 11 - first base plate, 111 - first glue inlet, 12 - first mold plate, 121 - first injection channel, 1211 - first flow guide channel, 1212 - first flow distribution channel, 13 - first mold core, 131 - first mounting hole, 132 - first mounting plate, 133 - second mounting plate, 134 - third mounting plate, 14 - first injection nozzle, 141 - first positioning part, 1411 - mounting channel, 142 - first injection part, 15 - first injection cavity;

[0076] 2 - second fixed mold assembly, 21 - second base plate, 211 - second glue inlet, 22 - second mold plate, 221 - second injection channel, 2211 - second flow guide channel, 2212 - second flow distribution channel, 23 - second mold core, 231 - second mounting hole, 24 - second injection nozzle, 241 - second positioning part, 242 - second injection part, 25 - second injection cavity;

[0077] 3 - movable mold assembly, 31 - third base plate, 311 - ejector rod, 32 - third mold plate, 321 - first ejection channel, 33 - third mold core, 331 - third mounting hole, 332 - fourth mounting plate, 333 - fifth mounting plate, 334 - sixth mounting plate, 34 - molded part, 341 - second ejection channel;

[0078] 4 - cooling channel, 41 - connecting pipe, 42 - cooling section;

[0079] 5 - locking assembly, 51 - locking block, 52 - first fastener, 53 - second fastener;

[0080] 6 - rotating base plate;

[0081] 7 - second mounting base, 71 - guide rod;

[0082] X - first direction, Y - second direction, Z - third direction. DETAILED DESCRIPTION

[0083] The utility model will be further described in detail below with the specific embodiments combined with the drawings. Similar elements in different embodiments adopt the associated similar element mark. In the following embodiments, many details are described in order to make the present application be better understood. However, the person skilled in the art can easily recognize that part of the features can be omitted in different cases, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification in order to avoid the core part of the present application being overwhelmed by too much description, and for the person skilled in the art, it is not necessary to describe these related operations in detail according to the description in the specification and the general technical knowledge in the art.

[0084] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various embodiments. At the same time, the steps or actions in the method description can also be sequentially replaced or adjusted in a manner that is obvious to the person skilled in the art. Therefore, the various sequences in the specification and drawings are only for the purpose of clearly describing a certain embodiment, and do not mean the necessary sequence, unless otherwise stated that a certain sequence must be followed.

[0085] The serial numbers of the components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "coupling" in the present application include direct and indirect connection (coupling) unless otherwise specified.

[0086] The existing double-color injection mechanism is prone to color mixing problems.

[0087] In the present application, the first injection position and the second injection position are arranged at different positions to avoid color mixing problems.

[0088] Please refer to Figures 1 to 9 , and Figures 16 to 17In one embodiment, a dual-color injection molding mechanism is provided, which includes a first fixed mold assembly 1, the first fixed mold assembly 1 including a first base and a first injection nozzle 14 arranged in the first base; a second fixed mold assembly 2, the second fixed mold assembly 2 including a second base and a second injection nozzle 24 arranged in the second base; a movable mold assembly 3, the movable mold assembly 3 including a third base and a forming piece 34 arranged in the third base, the forming piece 34 being used as a product mold to injection mold a product; and a rotating base 6, the movable mold assembly 3 being arranged in the rotating base 6, the rotating base 6 being configured to switch the movable mold assembly 3 between injection positions of the first fixed mold assembly 1 and the second fixed mold assembly 2; wherein the first injection nozzle 14 has a first injection position relative to the forming piece 34, and the second injection nozzle 24 has a second injection position relative to the forming piece 34, the second injection position being different from the first injection position.

[0089] In this embodiment, the first fixed mold assembly 1 is provided with the first injection nozzle 14, the second fixed mold assembly 2 is provided with the second injection nozzle 24, and the first injection position of the first injection nozzle 14 is different from the second injection position of the second injection nozzle 24. In this way, when the second color is injected on the basis of the first color, the injection material of the second color will not impact the first color area corresponding to the first injection position, and the injection material of the second color can be delayed to contact the first color area corresponding to the first injection position, so that the first color area corresponding to the first injection position is fully solidified, thereby effectively avoiding the problem of color mixing at the injection joint of the first color and the second color, and facilitating the improvement of the yield of the product.

[0090] It should be noted that the movable mold assembly of the embodiment has a first direction X, a second direction Y and a third direction Z perpendicular to each other, in one embodiment, the first direction X is the width direction of the movable mold assembly, i.e., the width direction of the first fixed mold assembly 1 and the second fixed mold assembly 2, the second direction Y is the length direction of the movable mold assembly, i.e., the length direction of the first fixed mold assembly 1 and the second fixed mold assembly 2, and the third direction Z is the height direction of the movable mold assembly, i.e., the height direction of the first fixed mold assembly 1 and the second fixed mold assembly 2.

[0091] It should be noted that, as shown in FIG. 1, the first fixed mold assembly 1 and the second fixed mold assembly 2 are arranged in the rotating base 6, and the movable mold assembly 3 is arranged in the rotating base 6. Figures 2 to 3As shown, the injection position of the first mold assembly 1 refers to the position when the movable mold assembly 3 is combined with the first mold assembly 1, and the injection position of the second mold assembly 2 refers to the position when the movable mold assembly 3 is combined with the second mold assembly 2. In addition, the first mold assembly 1 and the second mold assembly 2 are also provided with independent gate systems, so that the injection amount and injection time of different color injection materials can be accurately controlled. During the injection process, the pressure, temperature and flow of the molten injection material are monitored in real time by the dynamic pressure control system of the injection device, and the screw advancing speed and injection pressure are adjusted in real time to ensure that the injection material fills the injection cavity uniformly and avoid defects such as short shots and flash. In addition, the plastic material can be further optimized, two different color injection materials with good compatibility and binding force are selected, and appropriate additives such as plasticizers and stabilizers are added, so as to improve the processability of the injection material and improve the quality of the product.

[0092] In an embodiment, as shown in Figure 1 two movable mold assemblies 3 are provided, and the two movable mold assemblies 3 are arranged at intervals and one of them is located at the injection position of the first mold assembly 1 and the other is located at the injection position of the second mold assembly 2. By providing two movable mold assemblies 3 with the same structure, when one movable mold assembly 3 is combined with the first mold assembly 1 for the first injection, the other movable mold assembly 3 can be combined with the second mold assembly 2 for the second injection, so as to improve the injection efficiency.

[0093] In an embodiment, the width direction of the movable mold assembly 3 is the first direction X, and the forming part 34 has a first side and a second side arranged away along the first direction X; when the movable mold assembly 3 is switched to the injection position of the first mold assembly 1, the first injection position is located at the first side; when the movable mold assembly 3 is switched to the injection position of the second mold assembly 2, the second injection position is located at the second side. In this way, during the injection process, the first injection position and the second injection position are respectively located at the first side and the second side of the forming part 34, so that the first injection position and the second injection position are at different positions.

[0094] It can be understood that the first side and the second side are two opposite sides of a single forming part 34 along the first direction X, that is, the first side and the second side of the same row of multiple forming parts 34 can be different, and therefore, with reference to Figure 7For the plurality of first injection nozzle pieces 14 arranged in the same row, the first injection positions of all the first injection nozzle pieces 14 are located on the left side of the center line of the forming piece 34, or the first injection positions of all the first injection nozzle pieces 14 are located on the right side of the center line of the forming piece 34, or the first injection positions of a part of the first injection nozzle pieces 14 are located on the left side of the center line of the forming piece 34, and the first injection positions of another part of the first injection nozzle pieces 14 are located on the right side of the center line of the forming piece 34, which is not limited herein, and can be adjusted according to actual needs by those skilled in the art. For reference Figure 17 The same is true for the plurality of second injection nozzle pieces 24 arranged in the same row, which is not repeated herein.

[0095] In an embodiment, as shown in Figure 7 , the first mold assembly 1 further comprises a first injection cavity 15 for injection molding a semi-finished product, and the first base, the third base and the forming piece 34 enclose the first injection cavity 15, and the first injection position is located on the outside of the first injection cavity 15. In this way, since the first injection position is located on the outside of the first injection cavity 15, surface defects such as bubbles and scratches caused by the filling of the first injection cavity 15 can be reduced, which is beneficial to improve the surface quality of the semi-finished product and further improve the yield of the product.

[0096] In an embodiment, as shown in Figure 17 , the second mold assembly 2 further comprises a second injection cavity 25 for injection molding a finished product, and the second base, the third base and the semi-finished product formed on the forming piece 34 enclose the second injection cavity 25, and the second injection position is located on the inside of the second injection cavity 25. In this way, since the second injection position is located on the inside of the second injection cavity 25, i.e. the injection point is formed on the inside of the finished product, surface defects of the finished product can be reduced, which is beneficial to improve the yield of the product.

[0097] It should be noted that the present application does not limit the position and number of the first injection cavity 15 and the second injection cavity 25, which can be adjusted according to actual needs by those skilled in the art. It can be understood that the positions of the first injection cavity 15 and the second injection cavity 25 correspond and the number of the first injection cavity 15 and the second injection cavity 25 is consistent. In one embodiment, the first injection cavity 15 is arranged in two rows, the two rows of first injection cavities 15 are arranged at intervals along the second direction Y, and each row is provided with eight first injection cavities 15 arranged at intervals along the first direction X. Correspondingly, the second injection cavity 25 is arranged in two rows, the two rows of second injection cavities 25 are arranged at intervals along the second direction Y, and each row is provided with eight second injection cavities 25 arranged at intervals along the first direction X. That is, the double-color injection mechanism of the present application can realize the simultaneous injection of sixteen products, so as to realize the batch production of the products, which is beneficial to improve the production efficiency of the double-color injection mechanism.

[0098] In an embodiment, as shown in Figures 18 to 19As shown, the first injection nozzle 14 comprises a first positioning part 141 and a first injection part 142; the first positioning part 141 is used for being inserted into the forming part 34, and the first positioning part 141 is provided with a mounting channel 1411, the axis of the mounting channel 1411 is parallel to and does not coincide with the axis of the first positioning part 141; the first injection part 142 is arranged in the mounting channel 1411 and extends at least partially towards the top of the forming part 34, and the first injection part 142 is formed with a first injection channel, and a first injection position is formed at one end of the first injection channel close to the forming part 34.

[0099] In this embodiment, the first positioning part 141 is provided, and the accurate positioning of the first injection nozzle 14 can be realized by inserting the first positioning part 141 into the forming part 34. As shown in the figure, the axis of the first positioning part 141 coincides with the axis of the forming part 34, and when the axis of the mounting channel 1411 is parallel to and does not coincide with the axis of the first positioning part 141, the first injection part 142 is arranged in the mounting channel 1411, and the first injection position is formed at one end of the first injection channel, the first injection position can be located at the first side of the forming part 34. In one embodiment, the first injection part 142 is an injection pipe, the injection pipe is arranged in the mounting channel 1411, and in addition, the end of the injection pipe close to the forming part 34 can be appropriately bent towards the direction close to the first positioning part 141, so that the first injection position is as close as possible to the highest area of the first injection cavity, so as to reduce the surface defects such as bubbles, scratches, etc. generated by the injection material when filling the first injection cavity 15, and improve the surface quality of the semi-finished product.

[0100] In one embodiment, as shown in the figure, Figures 20 to 21 the second injection nozzle 24 comprises a second positioning part 241 and a second injection part 242; the second positioning part 241 is used for being inserted into the forming part 34; the second injection part 242 is arranged inside the side of the second positioning part 241 away from the forming part 34, the second injection part 242 is formed with a second injection channel, and the second injection channel extends from the side of the second positioning part 241 away from the forming part 34 to the peripheral wall of the side of the second positioning part 241 close to the forming part 34, so as to form a second injection position.

[0101] In this embodiment, the second injection nozzle 24 is accurately positioned by inserting the second positioning portion 241 into the shaped member 34. The structure of the second injection nozzle 24 is simplified by directly machining the second injection channel in the second positioning portion 241, which helps to reduce the machining difficulty and cost of the second injection nozzle 24. In addition, since the second injection channel extends from the side of the second positioning portion 241 away from the shaped member 34 to the peripheral wall of the second positioning portion 241 close to the shaped member 34, i.e., the second injection channel is inclined relative to the axis of the second positioning portion 241, the second injection position is not only located on the second side of the shaped member 34, but also on the inner side of the second injection cavity 25, which can effectively avoid color mixing and reduce injection defects, and helps to improve the yield of products.

[0102] In one embodiment, as shown in Figures 6 to 7 the first base includes a first base plate 11, a first mold plate 12, and a first mold core 13. The first base plate 11 is provided with a first glue inlet 111. The first mold plate 12 is arranged on the side of the first base plate 11 close to the movable mold assembly 3, and is provided with a first injection channel 121 that communicates with the first glue inlet 111. The first mold core 13 is arranged on the side of the first mold plate 12 close to the movable mold assembly 3, and is provided with a first mounting hole 131 in which the first injection nozzle 14 is embedded, and the first injection portion 142 communicates with the first injection channel 121.

[0103] In this embodiment, the first base plate 11 is provided with the first glue inlet 111, the first mold plate 12 is provided with the first injection channel 121, and the first injection channel 121 respectively communicates with the first glue inlet 111 and the first injection portion 142. In this way, when the gate system of the injection molding device is connected to the first glue inlet 111, the injection material can flow through the first glue inlet 111, the first injection channel 121, the first injection portion 142, and then into the first injection cavity 15, thereby injection molding a semi-finished product.

[0104] In one embodiment, as shown in Figure 18 the second base includes a second base plate 21, a second mold plate 22, and a second mold core 23. The second base plate 21 is provided with a second glue inlet 211. The second mold plate 22 is arranged on the side of the second base plate 21 close to the movable mold assembly 3, and is provided with a second injection channel 221 that communicates with the second glue inlet 211. The second mold core 23 is arranged on the side of the second mold plate 22 close to the movable mold assembly 3, and is provided with a second mounting hole 231 in which the second injection nozzle 24 is embedded, and the second injection portion 242 communicates with the second injection channel 221.

[0105] In this embodiment, the second substrate 21 is provided with a second glue injection port 211, and the second mold plate 22 is provided with a second injection channel 221, and the second injection channel 221 is respectively connected to the second glue injection port 211 and the second injection portion 242. Thus, when the gate system of the injection molding device is connected to the second glue injection port 211, the injection material can flow sequentially through the second glue injection port 211, the second injection channel 221, the second injection portion 242, and enter the second injection cavity 25, thereby forming a finished product based on the semi-finished product through injection molding.

[0106] In one embodiment, Figures 10 to 11 As shown, a plurality of first injection nozzles 14 are provided, and the plurality of first injection nozzles 14 are spaced apart along the first direction X. The first injection channel 121 includes a first guide channel 1211 and a plurality of first diversion channels 1212 communicating with the first guide channel 1211. The first guide channel 1211 is provided on a side of the first template 12 close to the first base. The first diversion channels 1212 penetrate the first template 12, and each first diversion channel 1212 communicates with a first injection portion 142. It is understood that the first guide channel 1211 is a channel formed by the groove formed on the surface of the first template 12 and the surface of the first substrate 11, and the first diversion channels 1212 are through holes that penetrate the first template 12.

[0107] In this embodiment, by providing multiple first injection nozzles 14, injection can be performed simultaneously into multiple first injection cavities 15, thereby improving injection efficiency. Because the first injection channel 121 includes a first guide channel 1211 and multiple first diversion channels 1212, the first guide channel 1211 is connected to the first injection port 111, and the first diversion channel 1212 is connected to the first injection portion 142, so that the injection material can be simultaneously and evenly delivered to the multiple first injection cavities, which is conducive to improving the product yield.

[0108] In one embodiment, a plurality of second injection nozzles 24 are provided, and the plurality of second injection nozzles 24 are spaced apart along the first direction X; the second injection channel 221 includes a second guide channel 2211 and a plurality of second diversion channels 2212 connected to the second guide channel 2211, the second guide channel 2211 is provided on a side of the second template 22 close to the second base, the second diversion channel 2212 is provided through the second template 22, and a second diversion channel 2212 is connected to a second injection part 242.

[0109] In the embodiment, by arranging the plurality of second injection nozzle pieces 24, the injection molding can be simultaneously performed to the plurality of second injection cavities 25, so as to improve the injection molding efficiency. Since the second injection channel 221 comprises the second flow guide channel 2211 and the plurality of second flow distribution channels 2212, by the communication between the second flow guide channel 2211 and the second injection port 211, and the communication between the second flow distribution channels 2212 and the second injection part 242, the injection material can be simultaneously and uniformly delivered to the plurality of second injection cavities, so as to improve the product yield.

[0110] In an embodiment, as shown in Figure 7 、 Figures 14 to 15 and Figure 17 , the third base comprises a third base plate 31, a third mold plate 32 and a third mold core 33; the third base plate 31 is fixedly connected to the rotating turntable 6; the third mold plate 32 is arranged on the side of the third base plate 31 away from the rotating turntable 6; the third mold core 33 is arranged on the side of the third mold plate 32 away from the third base plate 31, and the third mold core 33 is provided with a third mounting hole 331, and the forming piece 34 is embedded in the third mounting hole 331.

[0111] In the embodiment, by fixing the third base plate 31 to the rotating turntable 6, when the rotating turntable 6 is driven to rotate by the external driving device, the position switching of the movable mold assembly 3 can be realized. By arranging the third mounting hole 331 on the third mold core 33, and embedding the forming piece 34 in the third mounting hole 331, the disassembly and replacement of the forming piece 34 are facilitated.

[0112] It can be understood that the first fixed mold assembly 1, the second fixed mold assembly 2 and the movable mold assembly 3 will inevitably be worn or damaged during use. By arranging the replaceable first injection nozzle piece 14, the second injection nozzle piece 24 and the forming piece 34, the maintenance cost of the double-color injection molding mechanism can be reduced. In one of the embodiments, the material of the first injection nozzle piece 14 is different from that of the first mold core 13, the material of the second injection nozzle piece 24 is different from that of the second mold core 23, and the material of the third injection nozzle piece is different from that of the third mold core 33. In this way, the first injection nozzle piece 14, the second injection nozzle piece 24 and the forming piece 34 which are prone to wear can be made of a material with greater rigidity, so as to prolong the service life of the first injection nozzle piece 14, the second injection nozzle piece 24 and the forming piece 34, and reduce the maintenance cost of the double-color injection molding mechanism. The first mold core 13, the second mold core 23 and the third mold core 33 which are not prone to wear can be made of a material with lower rigidity, so as to further reduce the cost of the double-color injection molding mechanism.

[0113] In an embodiment, as shown in Figure 7 、 Figure 17 and Figures 22 to 23 , the first fixed mold assembly 1 comprises a first base plate 11, a first mold plate 12 and a first mold core 13; the first base plate 11 is fixedly connected to the rotating turntable 6; the first mold plate 12 is arranged on the side of the first base plate 11 away from the rotating turntable 6; the first mold core 13 is arranged on the side of the first mold plate 12 away from the first base plate 11, and the first mold core 13 is provided with a first mounting hole 131, and the first injection nozzle piece 14 is embedded in the first mounting hole 131.As shown, the two-color injection mechanism further comprises an ejector pin 311 movably connected to the third base; the third mold plate 32 is provided with a first ejection channel 321, and the forming member 34 is provided with a second ejection channel 341 in communication with the first ejection channel 321; the ejector pin 311 is arranged in the first ejection channel 321 and the second ejection channel 341 and abuts against the first injection nozzle member 14 or the second injection nozzle member 24. Specifically, the ejector pin 311 abuts against the first positioning portion 141 of the first injection nozzle member 14 or the second positioning portion 241 of the second injection nozzle member 24.

[0114] In this embodiment, since the ejector pin 311 is arranged, the ejector pin 311 is arranged in the first ejection channel 321 and the second ejection channel 341 and abuts against the first injection nozzle member 14 or the second injection nozzle member 24. In this way, after the injection is completed, under the driving of the external driving device, the ejector pin 311 moves towards the first base or the second base relative to the third base, so that the product can be ejected from the mold for subsequent transfer and post-processing. The post-processing includes but is not limited to removing the gate, trimming the flash, product inspection, etc.

[0115] In one embodiment, as shown in Figure 7 、 Figure 17 The first mold core 13 has a third side and a fourth side facing away from each other, and the fourth side is close to the third mold core; the aperture size of the first mounting hole 131 decreases in the direction from the third side to the fourth side. The second mold core 23 has a fifth side and a sixth side facing away from each other, and the sixth side is close to the third mold core 33; the aperture size of the second mounting hole 231 decreases in the direction from the fifth side to the sixth side. The third mold core 33 has a seventh side and an eighth side facing away from each other, and the eighth side is close to the first mold core 13 or the second mold core 23; the aperture size of the third mounting hole 331 decreases in the direction from the seventh side to the eighth side.

[0116] In this way, after the injection mold is assembled, the first injection nozzle member 14 can abut against the hole wall of the first mounting hole 131 and the surface of the first mold plate 12, thereby achieving reliable fixation of the first injection nozzle member 14; the second injection nozzle member 24 can abut against the hole wall of the second mounting hole 231 and the surface of the second mold plate 22, thereby achieving reliable fixation of the second injection nozzle member 24; the forming member 34 can abut against the hole wall of the third mounting hole 331 and the surface of the third mold plate 32, thereby achieving reliable fixation of the forming member 34. That is, no additional fixing structure is needed, which not only can simplify the structure of the first mold assembly 1, the second mold assembly 2 and the moving mold assembly 3, but also can improve the disassembly and assembly convenience of the first injection nozzle member 14, the second injection nozzle member 24 and the forming member 34.

[0117] It can be understood that the peripheral wall of the first injection nozzle 14 is identical in shape to the orifice of the first mounting hole 131, the peripheral wall of the second injection nozzle 24 is identical in shape to the orifice of the second mounting hole 231, and the peripheral wall of the forming piece 34 is identical in shape to the orifice of the third mounting hole 331, so as to realize seamless assembly of the first injection nozzle 14 and the first mounting hole 131, the second injection nozzle 24 and the second mounting hole 231, and the forming piece 34 and the third mounting hole 331. In one of the embodiments, the first mounting hole 131, the second mounting hole 231, and the third mounting hole 331 are all frustoconical.

[0118] In one of the embodiments, the movable die assembly 3 is provided with a guide groove; the first fixed die assembly 1 is provided with a first guide column, which is embedded in the guide groove; or, the second fixed die assembly 2 is provided with a second guide column, which is embedded in the guide groove.

[0119] In this embodiment, during the clamping of the movable die assembly 3 and the first fixed die assembly 1, the first guide column embedded in the guide groove can guide the movable die assembly 3 to be smoothly and accurately clamped with the first fixed die assembly 1. During the clamping of the movable die assembly 3 and the second fixed die assembly 2, the second guide column embedded in the guide groove can guide the movable die assembly 3 to be smoothly and accurately clamped with the second fixed die assembly 2.

[0120] It should be noted that the embodiments of the present application do not limit the specific positions and numbers of the guide groove, the first guide column, and the second guide column, and those skilled in the art can adjust them according to actual needs. It can be understood that the first guide column and the second guide column should correspond to the positions of the guide groove and be consistent in number. In one of the embodiments, the guide groove is provided with four, which are arranged along the circumference of the movable die assembly 3; the first guide column is provided with four, which are arranged along the circumference of the first fixed die assembly 1 and one first guide column corresponds to one guide groove; the second guide column is provided with four, which are arranged along the circumference of the second fixed die assembly 2 and one second guide column corresponds to one guide groove.

[0121] In one of the embodiments, as shown in FIG. 6, the first fixed die assembly 1 is provided with a first guide column 11, the second fixed die assembly 2 is provided with a second guide column 21, and the movable die assembly 3 is provided with a guide groove 31. Figure 5As shown, the double-color injection molding mechanism further comprises a locking assembly 5, the locking assembly 5 comprising a locking block 51, a first fastener 52 and a second fastener 53; the locking block 51 is provided with a first locking hole and a second locking hole; the movable mold assembly 3 is provided with a third locking hole at the corresponding position of the first locking hole; the first mold assembly 1 or the second mold assembly 2 is provided with a fourth locking hole at the corresponding position of the second locking hole; the first fastener 52 is connected with the first locking hole and the third locking hole, and the second fastener 53 is connected with the second locking hole and the fourth locking hole. In this way, by setting the locking assembly 5, the bonding surface between the movable mold assembly 3 and the mold assembly can be more closely fitted, thereby ensuring that different colors of injection materials will not leak and mix during the injection molding process, which is beneficial to improve the yield of products.

[0122] In one embodiment, the third locking hole is provided on the third mold plate 32, and the fourth locking hole is provided on the first mold plate 12 or the second mold plate 22. Further, the injection mold further comprises a sealing plug, which is arranged between the first mold assembly 1 or the second mold assembly 2 and the movable mold assembly 3, thereby further improving the sealing performance between the first mold assembly 1 and the movable mold assembly 3, and between the second mold assembly 2 and the movable mold assembly 3.

[0123] In one embodiment, as shown in Figures 8 to 9 The double-color injection molding mechanism further comprises a cooling channel 4, which is arranged on the first mold assembly 1, and / or the second mold assembly 2, and / or the movable mold assembly 3, and is used to communicate with an external cooling device. In this way, since the cooling channel 4 is arranged and communicates with the external cooling device, the semi-finished product and the finished product can be cooled, thereby improving the solidification effect of the semi-finished product and the finished product, and further reducing the possibility of color mixing.

[0124] In one embodiment, the cooling channel 4 comprises a connecting pipe 41 and two cooling sections 42. When the cooling channel 4 is arranged on the first mold assembly 1, the cooling sections 42 extend along the first direction X and the first injection nozzle 14 is located between the two cooling sections 42, the connecting pipe 41 is arranged on one side of the first mold assembly 1 along the first direction X and respectively communicates with the two cooling sections 42, and one end of the cooling section 42 away from the connecting pipe 41 is used to communicate with the external cooling device.

[0125] When the cooling channel 4 is arranged on the first mold assembly 1, the cooling sections 42 extend along the first direction X and the second injection nozzle 24 is located between the two cooling sections 42, the connecting pipe 41 is arranged on one side of the second mold assembly 2 along the first direction X and respectively communicates with the two cooling sections 42, and one end of the cooling section 42 away from the connecting pipe 41 is used to communicate with the external cooling device.

[0126] In the case that the cooling channel 4 is arranged in the movable mold assembly 3, the cooling sections 42 extend along the first direction X and the formed part 34 is located between two cooling sections 42, the connecting pipe 41 is arranged at one side of the movable mold assembly 3 along the first direction X and respectively communicates with two cooling sections 42, and the end of the cooling section 42 away from the connecting pipe 41 is used to communicate with the external cooling device.

[0127] In this embodiment, the cooling channel 4 is arranged in the first mold assembly 1, and since the two cooling sections 42 of the cooling channel 4 are arranged on both sides of the row of first injection nozzle parts 14 respectively, the cooling medium flowing through the two cooling sections 42 can fully contact the structure around the first injection nozzle parts 14, thereby improving the cooling and solidification effect of the product formed in the first injection cavity 15. It should be noted that the cooling channel 4 is arranged in the second mold assembly 2 and the movable mold assembly 3, and the same applies here, which will not be repeated. In addition, compared with directly connecting each cooling section 42 with the external cooling device, when the connecting pipe 41 connecting the two cooling sections 42 is arranged, the cooling pipeline can be reduced, which is conducive to simplifying the assembly process of the two-color injection molding structure and the cooling device.

[0128] In actual application, for example, Figures 12 to 13 Taking the first mold assembly 1 as an example, the first mold core 13 includes a first mounting plate 132, a second mounting plate 133 and a third mounting plate 134. The first mounting plate 132 is arranged at the side of the second mounting plate 133 and the third mounting plate 134 away from the movable mold assembly 3, the second mounting plate 133 and the third mounting plate 134 are oppositely arranged along the second direction Y, and the side of the second mounting plate 133 and the third mounting plate 134 close to each other is respectively provided with a first recess, and the two first recesses form a first mold cavity. In addition, the second mold assembly 2 is the same as the first mold assembly 1, which will not be repeated. For example, Figures 13 to 14For example, the third mold core 33 includes a fourth mounting plate 332, a fifth mounting plate 333, and a sixth mounting plate 334. The fourth mounting plate 332 is arranged on the side of the fifth mounting plate 333 and the sixth mounting plate 334 away from the fixed mold assembly. The fifth mounting plate 333 and the sixth mounting plate 334 are arranged opposite to each other along the second direction Y. The fifth mounting plate 333 and the sixth mounting plate 334 are respectively provided with a second recess on the side close to each other. The two second recesses enclose a mold cavity. The mold cavity, the first fixed mold cavity, and the molded part 34 enclose a first injection cavity 15. In summary, by disassembling the first mold core 13, the second mold core 23, and the third mold core 33 into multiple components, the processing difficulty of the first mold core 13, the second mold core 23, and the third mold core 33 can be further reduced. In one embodiment, for example, the first fixed mold assembly 1, one cooling section 42 of the cooling channel 4 is arranged on the second mounting plate 133, and the other cooling section 42 is arranged on the third mounting plate 134. For example, the movable mold assembly 3, one cooling section 42 of the cooling channel 4 is arranged on the fifth mounting plate 333, and the other cooling section 42 is arranged on the sixth mounting plate 334.

[0129] In one embodiment, for example, the first fixed mold assembly 1, the first injection nozzle 14 can be arranged in multiple rows. The multiple rows of first injection nozzles 14 are arranged at intervals along the second direction Y. In this case, the cooling channel 4 can be arranged in multiple rows. One cooling channel 4 surrounds one row of first injection nozzles 14. The second fixed mold assembly 2 and the movable mold assembly 3 are the same, and will not be repeated here. In this way, the multiple products simultaneously injection molded can be uniformly cooled, thereby avoiding product deformation, size deviation, and other problems caused by uneven temperature, and improving the yield of the products.

[0130] It should be noted that the multiple cooling channels 4 can be independent of each other or connected to each other, which is not limited here, and those skilled in the art can adjust it according to actual needs. It can be understood that when the multiple cooling channels 4 are independent of each other, the flow path of the cooling medium is shorter, which can better achieve temperature control, but the pipeline between the first fixed mold assembly 1 and the cooling device increases. When the multiple cooling channels 4 are connected to each other, that is, the entire first fixed mold assembly 1 only needs to be connected to the cooling device through one set of pipelines (i.e., the water inlet pipeline and the water outlet pipeline), thereby reducing the pipeline and simplifying the assembly of the double-color injection molding mechanism, but the flow path of the cooling medium is longer, which may affect the uniformity of cooling.

[0131] In one embodiment, the connecting pipe 41 is a flexible pipe. It should be noted that the flexible pipe refers to a pipe that can bend and deform under external force, including but not limited to polyethylene pipes and the like.

[0132] In this embodiment, the installation space required by the connecting pipe 41 can be reduced by the flexible pipe which can be bent and deformed. In addition, during the frequent mold closing and opening of the double-color injection molding mechanism, the flexible pipe can be self-adaptively adjusted by bending or straightening, so as to reduce the possibility of damage of the connecting pipe 41, and improve the cooling reliability of the cooling channel 4.

[0133] In one embodiment, as shown in Figure 1 An injection molding device is also provided, comprising: a first mounting base, a second mounting base 7, a driving device, and the double-color injection molding mechanism of any one of the above embodiments; the first mounting base and the second mounting base 7 are oppositely arranged, and the second mounting base 7 is movable relative to the first mounting base; the first mold assembly 1 and the second mold assembly 2 are arranged on the side of the first mounting base close to the second mounting base 7; the rotating base plate 6 is rotationally connected to the side of the second mounting base 7 close to the first mounting base; the driving device is arranged on the side of the second mounting base 7 away from the rotating base plate 6, and is used to drive the rotating base plate 6 to rotate and drive the second mounting base 7 to move.

[0134] In this embodiment, since the first mounting base and the second mounting base 7 movable relative to the first mounting base are arranged, by installing the first mold assembly 1 on the rotating base plate 6 which is rotationally connected to the first mounting base, and installing the second mold assembly 2 on the second mounting base 7, under the driving of the driving device, the movable mold assembly 3 can move relative to the first mold assembly 1 or the second mold assembly 2, so as to realize the mold closing and opening of the movable mold assembly 3 and the first mold assembly 1 or the second mold assembly 2. In addition, since the rotating base plate 6 is rotationally connected to the second mounting base 7, under the driving of the driving device, the rotating base plate 6 can rotate relative to the second mounting base 7, so as to drive the movable mold assembly 3 to switch the injection position of the first mold assembly 1 and the second mold assembly 2. It can be understood that, as shown in Figure 1 Since the first mold assembly 1 and the second mold assembly 2 are arranged along the first direction X, only 180° rotation of the rotating base plate is required to realize the switching of the injection position of the movable mold assembly 3 and the first mold assembly 1 or the second mold assembly 2.

[0135] It should be noted that in the embodiments of the present application, the structure of the double-color injection molding mechanism is the same as that of the double-color injection molding mechanism of any one of the above embodiments, and the beneficial effects are similar, which will not be repeated here.

[0136] In one embodiment, the first mounting base is provided with a guide hole, and the second mounting base 7 is provided with a guide rod 71 which is arranged in the guide hole. In this way, under the driving of the driving device, the second mounting base 7 can be guided to move along the third direction Z so as to close and open the mold assembly 3 and the first mold assembly 1 or the second mold assembly 2. It should be noted that a plurality of guide holes can be arranged along the circumference of the first mounting base, and the guide rod 71 can be provided with a plurality of guide rods 71 which are arranged along the circumference of the second mounting base 7, and one guide rod 71 is arranged in one guide hole, so as to further improve the guiding reliability.

[0137] In actual application, after assembling and adjusting the positions of the components of the injection molding device, the injection molding can be performed. The following provides a process example of performing double-color injection molding by using the injection molding device of the embodiment of the present application:

[0138] Firstly, the movable mold assembly 3 is switched to the injection position of the first mold assembly 1 and is closed with the first mold assembly 1.

[0139] Secondly, the injection material of the first color is injected into the first injection cavity 15 through the first glue injection port 111 of the first mold assembly 1, and the injection material of the first color is solidified to obtain a semi-finished product.

[0140] Thirdly, after the movable mold assembly 3 is opened with the first mold assembly 1, the movable mold assembly 3 is switched to the injection position of the second mold assembly 2 and is closed with the second mold assembly 2.

[0141] Finally, the injection material of the second color is injected into the second injection cavity 25 through the second glue injection port 211 of the second mold assembly 2, and the injection material of the second color is solidified to obtain a finished product.

[0142] The above application of specific examples to the present application is only used to help understand the present application and does not limit the present application. For those skilled in the art to which the present application belongs, according to the idea of the present application, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A two-color injection molding mechanism characterized by comprising: The injection molding machine comprises: a first fixed mold assembly comprising a first base and a first injection nozzle arranged in the first base; a second fixed mold assembly comprising a second base and a second injection nozzle arranged in the second base; a movable mold assembly comprising a third base and a forming piece arranged in the third base, the forming piece being used as a product mold to injection mold a product; and a rotating base, the movable mold assembly being arranged in the rotating base, the rotating base being configured to switch the movable mold assembly between injection positions of the first fixed mold assembly and the second fixed mold assembly; wherein the first injection nozzle has a first injection position relative to the forming piece, and the second injection nozzle has a second injection position relative to the forming piece, the second injection position being different from the first injection position.

2. The dual color injection molding mechanism of claim 1, wherein, A width direction of the movable mold assembly is a first direction, and the forming piece has a first side and a second side arranged away from each other along the first direction; when the movable mold assembly is switched to the injection position of the first fixed mold assembly, the first injection position is located at the first side; when the movable mold assembly is switched to the injection position of the second fixed mold assembly, the second injection position is located at the second side.

3. The dual color injection molding mechanism of claim 1, wherein, The first fixed mold assembly further comprises a first injection cavity for injection molding a semi-finished product, the first base, the third base and the forming piece surrounding the first injection cavity, and the first injection position is located outside the first injection cavity; and / or, the second fixed mold assembly further comprises a second injection cavity for injection molding a finished product, the second base, the third base and the semi-finished product formed on the forming piece surrounding the second injection cavity, and the second injection position is located inside the second injection cavity.

4. The dual color injection molding mechanism of claim 1, wherein, The first injection nozzle comprises a first positioning part and a first injection part; the first positioning part is used for being inserted into the forming piece, and the first positioning part is provided with a mounting channel, an axis of the mounting channel being parallel to and not coinciding with an axis of the first positioning part; the first injection part is arranged in the mounting channel and at least partially extends towards a top of the forming piece, a first injection channel being formed in the first injection part, and the first injection position being formed at one end of the first injection channel close to the forming piece; and / or, the second injection nozzle comprises a second positioning part and a second injection part; the second positioning part is used for being inserted into the forming piece; the second injection part is arranged inside a side of the second positioning part away from the forming piece, a second injection channel being formed in the second injection part, the second injection channel extending from the side of the second positioning part away from the forming piece to a peripheral wall of the second positioning part close to the forming piece to form the second injection position.

5. The dual color injection molding mechanism of claim 4, wherein, The first base comprises a first base plate, a first mold plate and a first mold core; the first base plate is provided with a first glue inlet; The first mold plate is arranged on the side of the first base plate close to the movable mold assembly, and the first mold plate is provided with a first injection channel, which is in communication with the first glue injection port; The first mold core is arranged on the side of the first mold plate close to the movable mold assembly, and the first mold core is provided with a first mounting hole, the first injection nozzle is embedded in the first mounting hole, and the first injection part is in communication with the first injection channel; And / or, the second base includes a second base plate, a second mold plate, and a second mold core; The second base plate is provided with a second glue injection port; The second mold plate is arranged on the side of the second base plate close to the movable mold assembly, and the second mold plate is provided with a second injection channel, which is in communication with the second glue injection port; The second mold core is arranged on the side of the second mold plate close to the movable mold assembly, and the second mold core is provided with a second mounting hole, the second injection nozzle is embedded in the second mounting hole, and the second injection part is in communication with the second injection channel.

6. The dual color injection molding mechanism of claim 5, wherein, The first injection nozzle is provided with a plurality of first injection nozzles, and the plurality of first injection nozzles are arranged in a first direction; The first injection channel includes a first flow guide channel and a plurality of first shunt channels in communication with the first flow guide channel, the first flow guide channel is arranged on the side of the first mold plate close to the first base, and the first shunt channel penetrates the first mold plate, and one of the first shunt channels is in communication with one of the first injection parts; And / or, the second injection nozzle is provided with a plurality of second injection nozzles, and the plurality of second injection nozzles are arranged in the first direction; The second injection channel includes a second flow guide channel and a plurality of second shunt channels in communication with the second flow guide channel, the second flow guide channel is arranged on the side of the second mold plate close to the second base, and the second shunt channel penetrates the second mold plate, and one of the second shunt channels is in communication with one of the second injection parts.

7. The dual color injection molding mechanism according to any one of claims 1 to 6, characterized in that The movable mold assembly is provided with a guide groove; The first guide column of the first mold assembly is embedded in the guide groove; or, the second guide column of the second mold assembly is embedded in the guide groove; And / or, the double-color injection molding mechanism further includes a locking assembly, and the locking assembly includes a locking block, a first fastener, and a second fastener; The locking block is provided with a first locking hole and a second locking hole; The movable mold assembly is provided with a third locking hole at the corresponding position of the first locking hole; The first mold assembly or the second mold assembly is provided with a fourth locking hole at the corresponding position of the second locking hole; The first fastener is connected with the first locking hole and the third locking hole, and the second fastener is connected with the second locking hole and the fourth locking hole.

8. The dual color injection molding mechanism of claim 1, wherein, The double-color injection molding mechanism further includes a cooling channel, and the cooling channel is arranged on the first mold assembly, and / or the second mold assembly, and / or the movable mold assembly, and the cooling channel is used for communication with an external cooling device.

9. The dual color injection molding mechanism of claim 8, wherein, The cooling channel includes a connecting pipe and two cooling sections; The cooling sections extend along a first direction and the first injection nozzle is located between two of the cooling sections, the connecting pipe is arranged on one side of the first mold assembly along the first direction and respectively communicates with two of the cooling sections, and one end of the cooling section away from the connecting pipe is used for communicating with an external cooling device; And / or, the cooling sections extend along a first direction and the second injection nozzle is located between two of the cooling sections, the connecting pipe is arranged on one side of the second mold assembly along the first direction and respectively communicates with two of the cooling sections, and one end of the cooling section away from the connecting pipe is used for communicating with an external cooling device; And / or, the cooling sections extend along a first direction and the molding part is located between two of the cooling sections, the connecting pipe is arranged on one side of the movable mold assembly along the first direction and respectively communicates with two of the cooling sections, and one end of the cooling section away from the connecting pipe is used for communicating with an external cooling device.

10. An injection molding apparatus characterized by comprising: Comprise: A first mounting base, a second mounting base, a driving device and the bi-color injection molding mechanism of any one of claims 1-9; The first mounting base and the second mounting base are oppositely arranged, and the second mounting base is movable relative to the first mounting base; The first mold assembly and the second mold assembly are arranged on one side of the first mounting base close to the second mounting base; The rotating base plate is rotationally connected to one side of the second mounting base close to the first mounting base; The driving device is arranged on one side of the second mounting base away from the rotating base plate, and the driving device is used for driving the rotating base plate to rotate and driving the second mounting base to move.

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