Color changing mechanism of double-color mold

Abstract

The utility model relates to the technical field of injection molds, in particular to a color changing mechanism of a double-color mold, which comprises a first front mold assembly, a second front mold assembly and a rear mold assembly, the first front mold assembly comprises a first front mold core and a first sliding block, the second front mold assembly comprises a second front mold core and a second sliding block, and the rear mold assembly comprises a rear mold core and a rotating assembly. The rear mold core is driven to rotate between the first front mold core and the second front mold core through the rotating assembly; the first front mold core and the second front mold core are provided with a first front mold cavity and a second front mold cavity respectively, the rear mold core is provided with a rear mold cavity, the rear mold core corresponds to the first front mold core or the second front mold core, and a first cavity or a second cavity is defined by the rear mold core and the first front mold core or the second front mold core; the first sliding block moves towards the interior of the first cavity to form a first injection molding cavity for machining a first injection molding part; and the second sliding block moves towards the interior of the second cavity to form a second injection molding cavity for machining a second injection molding part. Direct impact and friction on the first injection molding part during secondary injection molding can be effectively avoided, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of injection mold, especially a color changing mechanism of double -color mould. BACKGROUND

[0002] Double -color injection molding refers to the process that two plastics or two different color plastics are formed into one in the processing of once injection molding, and the double -color injection mold usually includes the rubber -coated mould, the rotating disc double -color mould and the rotating shaft double -color mould, in the existing double -color injection mold, the first formed injection part is usually impacted and rubbed by the material of the later injection, which causes the surface of the first formed injection part to produce scratch or deformation.

[0003] The utility model discloses a color changing mechanism of double -color mould to solve the technical problem of the prior art. UTILITY MODEL CONTENTS

[0004] The utility model discloses a color changing mechanism of double -color mould to solve the technical problem of the prior art.

[0005] The utility model discloses a color changing mechanism of double -color mould to solve the technical problem of the prior art.

[0006] A color changing mechanism of double -color mould, including first front mould assembly and second front mould assembly that are oppositely arranged, the back mould assembly that is arranged between first front mould assembly and second front mould assembly, first front mould assembly includes first front mould kernel, the first slider that slides relative to first front mould kernel, second front mould assembly includes second front mould kernel, the second slider that slides relative to second front mould kernel, back mould assembly includes back mould kernel, the rotating assembly that is connected with back mould kernel, and the back mould kernel is driven to rotate between first front mould kernel and second front mould kernel through rotating assembly, first front mould kernel and second front mould kernel are equipped with first front mould cavity and second front mould cavity respectively, back mould kernel is equipped with back mould cavity, back mould kernel corresponds with first front mould kernel or second front mould kernel, and first cavity or second cavity is formed by enclosing, first cavity includes first front mould cavity and back mould cavity, and second cavity includes second front mould cavity and back mould cavity, first slider moves towards first cavity to form first injection cavity for processing first injection part, and second slider moves towards second cavity to form second injection cavity for processing second injection part.

[0007] The color changing mechanism of a double-color mold as described above, the first slider is provided with a first forming part and a first limiting part adjacent to each other, the first limiting part is higher than the first forming part, and a first limiting step is formed on one side of the first forming part, the first slider drives the first forming part to move into the first cavity, and the first slider is in contact with the back mold core, the first limiting step is used to close the first injection cavity, and the first forming part forms the inner forming surface of the first injection part.

[0008] The color changing mechanism of a double-color mold as described above, the second slider is provided with a second forming part and a second limiting part adjacent to each other, the second limiting part is higher than the second forming part, and a second limiting step is formed on one side of the second forming part, the second slider drives the second forming part to move into the second cavity, and the second slider is in contact with the back mold core, the second limiting step is used to close the second injection cavity, and the second forming part forms the inner forming surface of the second injection part; the second slider is further provided with an extension part, and the second forming part is arranged between the extension part and the second limiting step.

[0009] The color changing mechanism of a double-color mold as described above, the back mold core is provided with a third forming part for forming the inner forming surface of the first injection part, and the first slider or the second slider is in contact with the third forming part when moving into the back mold cavity.

[0010] The color changing mechanism of a double-color mold as described above, the back mold assembly further comprises a first insert assembly and a second insert assembly arranged in the back mold cavity, the first insert assembly is provided with a fourth forming part, the second insert assembly is provided with a fifth forming part, and the third forming part, the fourth forming part and the fifth forming part form the inner forming surface of the first injection part.

[0011] The color changing mechanism of a double-color mold as described above, the back mold assembly further comprises a third slider arranged on one side of the back mold core, the third slider is provided with a seventh forming part, the seventh forming part is used to form the outer forming surface of the second injection part, and the second slider and the third slider move into the back mold cavity and form the second injection cavity with the second front mold core.

[0012] The color changing mechanism of a double-color mold as described above, the rear mold component further comprises a mounting plate arranged between the rear mold cavity and the rotating component, the mounting plate is provided with a first mounting slot for mounting the rear mold cavity and a second mounting slot for mounting the third sliding block, the first mounting slot is in communication with the second mounting slot, the rear mold cavity is further provided with a moving channel in communication with the rear mold cavity, and the second mounting slot is provided with a first driving device connected with the third sliding block, the third sliding block is driven to move along the moving channel towards the rear mold cavity through the first driving device.

[0013] The color changing mechanism of a double-color mold as described above, the first front mold component further comprises a first supporting plate for mounting the first front mold cavity and a second driving device connected with the first sliding block, the first supporting plate is provided with a third mounting slot for mounting the first front mold cavity and a fourth mounting slot for mounting the second driving device, the third mounting slot is in communication with the fourth mounting slot, the first sliding block is moved towards the first front mold cavity through the second driving device, and a first gap exists between the first sliding block and the first front mold cavity, and the first injection cavity comprises the first gap.

[0014] The color changing mechanism of a double-color mold as described above, the second front mold component further comprises a second supporting plate for mounting the second front mold cavity and a third driving device connected with the second sliding block, the second supporting plate is provided with a fifth mounting slot for mounting the second front mold cavity and a sixth mounting slot for mounting the third driving device, the fifth mounting slot is in communication with the sixth mounting slot, the second sliding block is moved towards the second front mold cavity through the third driving device, and a second gap exists between the second sliding block and the second front mold cavity, and the second injection cavity comprises the second gap.

[0015] The color changing mechanism of a double-color mold as described above, the rotating component is provided with the rear mold cavity on both sides, the rear mold cavity is provided with a plurality of rear mold cavities, and the first front mold cavity and the second front mold cavity are correspondingly provided with a plurality of rear mold cavities relative to the rear mold cavity.

[0016] Compared with the prior art, the color changing mechanism of a double-color mold has the following beneficial effects:

[0017] The first injection cavity is formed between the first sliding block and the rear mold cavity and the first front mold cavity, the second injection cavity is formed between the second sliding block and the rear mold cavity and the second front mold cavity, the first injection cavity and the second injection cavity are separated, direct impact and friction on the first injection part during the second injection can be effectively avoided, the first injection part is prevented from being damaged, the purpose of protecting the first injection part is achieved, and the product quality is improved.

[0018] The utility model will be further described below in connection with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the exploded view of the color changing mechanism of the utility model;

[0020] Figure 2 It is the perspective view of the first front mould assembly of the utility model;

[0021] Figure 3 It is the exploded view of the first front mould assembly. Figure 2

[0022] Figure 4 It is the perspective view of the second front mould assembly of the utility model;

[0023] Figure 5 It is the exploded view of the second front mould assembly. Figure 4

[0024] Figure 6 It is the perspective view of the rear mould assembly of the utility model;

[0025] Figure 7 It is the exploded view of the rear mould assembly. Figure 6

[0026] It is the perspective view of the first sliding block of the utility model; Figure 8

[0027] It is the connection schematic diagram of the first sliding block when injection moulding with the rear mould assembly (the dotted line part is the first injection moulding piece); Figure 9

[0028] It is the perspective view of the second sliding block of the utility model; Figure 10

[0029] It is the connection schematic diagram of the second sliding block when injection moulding with the rear mould assembly Figure 11 . Figure 1

[0030] It is the connection schematic diagram of the second sliding block when injection moulding with the rear mould assembly Figure 12 (containing the first injection moulding piece and the second injection moulding piece); Figure 2

[0031] Figure 13 It is the perspective view of the first injection moulding piece and the second injection moulding piece of the utility model;

[0032] Figure 14 It is the exploded view of the first injection moulding piece and the second injection moulding piece. Figure 13 DETAILED DESCRIPTION

[0033] The embodiments of the utility model will be described in detail below in connection with the drawings.

[0034] ​​​​Embodiment 1:

[0035] As Figure 1 The utility model provides a color change mechanism of double -color mould as shown in 13, the color change mechanism can apply to double -color injection mould, be used for processing different color material or different material's combination injection part. The color change mechanism includes first front mould component 1, second front mould component 2 and rear mould component 3, first front mould component 1 and second front mould component 2 are oppositely arranged, rear mould component 3 is rotatably arranged between first front mould component 1 and second front mould component 2, first front mould component 1 includes first front mould kernel 11, first front mould kernel 11 is equipped with first front mould cavity 111, second front mould component 2 includes second front mould kernel 21, and second front mould kernel 21 is equipped with second front mould cavity 211, and rear membrane component includes rear mould kernel 31, and the rotation assembly 32 connected with rear mould kernel 31, and rear mould kernel 31 is equipped with rear mould cavity 311, and the rotation assembly 32 drives rear mould kernel 31 around Figure 1 The dotted line L in the rear mould kernel 31 rotates 180 DEG when the rear mould kernel 31 is opposite first front mould kernel 11, and the first cavity is formed by the rear mould kernel 31 and first front mould kernel 11, and the first cavity includes first front mould cavity 111 and rear mould cavity 311, and when the rear mould kernel 31 rotates to be opposite second front mould kernel 21, the second cavity is formed by the rear mould kernel 31 and second front mould kernel 21, and the second cavity includes second front mould cavity 211 and rear mould cavity 311.

[0036] Further, as Figure 2As shown in FIG. 3, the first front mold assembly 1 further comprises a first slider assembly 4 arranged on one side of the first front mold core 11, the first slider assembly 4 comprising a first slider 41 and a second driving device 42 connected to the first slider 41, the second driving device 42 being configured to move the first slider 41 relative to the first front mold core 11 in an extendable and retractable manner, so that the first slider 41 extends into or moves out of the first front mold cavity 111; the second front mold assembly 2 further comprises a second slider assembly 5 arranged on one side of the second front mold core 21, the second slider assembly 5 comprising a second slider 51 and a third driving device 52 connected to the second slider 51, the third driving device 52 being configured to move the second slider 51 relative to the second front mold core 21 in an extendable and retractable manner, so that the second slider 51 extends into or moves out of the second front mold cavity 211; when the first cavity is formed between the rear mold core 31 and the first front mold core 11, the first slider 41 extends into the first cavity, so that the rear mold core 31, the first slider 41 and the first front mold core 11 form a first injection cavity for processing the first injection molded part A; when the second cavity is formed between the rear mold core 31 and the second front mold core 21, the second slider 51 extends into the second cavity, so that the rear mold core 31, the second slider 51 and the second front mold core 21 form a second injection cavity for processing the second injection molded part B.

[0037] In the production process, the back cavity block 31 is first opposed to the first front cavity block 11 and the mold is closed to form the first cavity, the first slider 41 is moved into the first cavity by the second driving device 42 to form the first injection cavity between the back cavity block 31, the first slider 41 and the first front cavity block 11, and the first injection part A is processed and formed through the first injection cavity, then the first slider 41 is retracted and withdrawn from the first cavity by the second driving device 42 to realize core pulling and mold opening, and when the first slider 41 is separated from the first injection part A and withdrawn from the first cavity, most of the first injection part A is still attached to the back cavity block 31, so that the first injection part A can be rotated with the back cavity block 31 through the rotating assembly 32 to be opposed to the second front cavity block 21, the second front cavity block 21 is closed with the back cavity block 31 to form the second cavity, and the first injection part A is in the second cavity, then the second slider 51 is extended into the second cavity and moved to one side of the first injection part A by the third driving device 52 to form the second injection cavity between the first injection part A, the second slider 51, the back cavity block 31 and the second front cavity block 21, and the second injection cavity is close to the edge of the first injection part A, so that the second injection part B can be directly processed and formed on the basis of the first injection part A, so that the first injection part A and the second injection part B are tightly matched to realize the processing of combined injection parts with different colors or different materials, when the second injection part B is processed, the second slider 51 is retracted and withdrawn from the second cavity by the third driving device 52 to realize core pulling and mold opening, and finally the combined injection part product formed by the first injection part A and the second injection part B is ejected.The first injection cavity is formed between the first slider 41 and the rear mold core 31 and the first front mold core 11, and the second injection cavity is formed between the second slider 51 and the rear mold core 31 and the second front mold core 21, the first injection cavity and the second injection cavity are separated, which can effectively avoid the direct impact and friction on the first injection part A during the second injection, prevent the first injection part A from being damaged, so as to achieve the purpose of protecting the first injection part A and improve the product quality; in addition, the rear mold core 31 is rotated by 180° between the first front mold core 11 and the second front mold core 21, and the first slider 41 or the second slider 51 is combined with the extension movement, so as to switch the first injection cavity and the second injection cavity, which is beneficial to the processing of the first injection part A and the second injection part B in one double-color injection mold, provides the production efficiency, and the second injection part B is directly processed on the basis of the first injection part A, which is beneficial to improving the connection tightness between the first injection part A and the second injection part B, further improves the product quality; in addition, the rear mold core 31 is rotated between the first front mold core 11 and the second front mold core 21, and the first slider 41 and the second slider 51 are respectively used to form the first injection cavity and the second injection cavity, so as to realize the processing of the first injection part A and the second injection part B, which is simple in structure and easy to realize.

[0038] Optionally, as a preferred scheme of the embodiment but not limited, the first injection part A is a hard glue part, and the second injection part B is a soft glue part.

[0039] Embodiment 2:

[0040] As Figure 3 , 8, 9, embodiment 2 is based on embodiment 1, and has the following implementation: the top of the first slider 41 is provided with an adjacent first forming part 411 and a first limiting part 412, the first limiting part 412 is higher than the first forming part 411, and a first limiting step 413 is formed on one side of the first forming part 411; when performing the first injection molding, the first slider 41 drives the first forming part 411 to move into the first cavity, the first limiting part 412 moves synchronously with the first slider 41, the bottom of the first slider 41 is in contact with the rear mold core 31, and the first forming part 411 is connected with the injection wall one of the rear mold core 31, the first forming part 411 and the injection wall one of the rear mold core 31 form the inner forming surface of the first injection molding part A, the first front mold core 11 is provided with an injection wall two for forming the outer forming surface of the first injection molding part A, that is, the first forming part 411, the injection wall one of the rear mold core 31 and the injection wall two of the first front mold core 11 form the first injection cavity, and the first limiting step 413 closes the first injection cavity, so as to facilitate the forming of the first injection molding part A and avoid overflow of the injection material, thereby further improving the product quality. It should be noted that in the first front mold core 11, the injection wall two is formed by the inner wall of the first front mold cavity 111.

[0041] Embodiment 3:

[0042] As Figure 5 , 10, 11, embodiment 3 is based on any of the above embodiments, has the following implementation: the top of the second slider 51 is provided with adjacent second forming part 511 and second limiting part 512, the second limiting part 512 is higher than the second forming part 511, and the second limiting step 513 is formed on the side of the second forming part 511, the second slider 51 is also provided with an extension part 514, the second forming part 511 is arranged between the extension part 514 and the second limiting step 513, the second slider 51 drives the second forming part 511 to move into the second cavity, the second limiting part 512 moves synchronously with the second slider 51, the bottom of the second slider 51 is in contact with the back core 31, and the extension part 514 is connected with the injection wall one of the back core 31, the inner forming surface of the second injection part B is formed by the second forming part 511 and the injection wall one of the back core 31, the second front core 21 is provided with injection wall three for forming the outer forming surface of the second injection part B, that is, the first injection part A, the second forming part 511, the injection wall one of the back core 31 and the injection wall two of the second front core 21 form the second injection cavity, and the second limiting step 513 closes the second injection cavity, which is beneficial to the molding of the second injection part B and avoids overflow of injection material, further improving product quality. It should be noted that in the second front core 21, the injection wall three is formed by the inner wall of the second front cavity 211.

[0043] In addition, after the first injection is completed, the first slider 41 exits the first cavity, so that the avoidance cavity is generated between the first injection part A and the back core 31, when the second slider 51 extends into the second cavity, the extension part 514 extends into the avoidance cavity and is clamped and fixed together with the back core 31 and the second front core 21, the second forming part 511 corresponds to the second injection cavity and is at the edge of the first injection part A, that is, the second forming part 511 corresponds to the assembly structure of the first injection part A, which can effectively avoid direct impact and friction on the first injection part A during the second injection, prevent the first injection part A from being damaged, so as to achieve the purpose of protecting the first injection part A and improve product quality. Preferably, the end of the first slider 41 and the end of the second slider 51 are matched with the connecting end surface of the injection wall one of the back core 31, that is, the structure of the extension part 514 of the second slider 51 is consistent with the structure of the first forming part 411 of the first slider 41, which is beneficial to further protecting the first injection part A during the second injection, and can reduce the manufacturing cost of the double-color injection mold.

[0044] Embodiment 4:

[0045] As Figure 9 , 11As shown, the embodiment 4 has the following implementation based on any of the above embodiments: the back cavity 311 is provided with a third forming part 312 for forming the inner forming surface of the first injection molding part A, and the first slider 41 or the second slider 51 is in contact with the third forming part 312 when the first slider 41 or the second slider 51 moves into the back cavity 311; in this embodiment, the third forming part 312 extends from the bottom wall of the back cavity 311 to the parting surface of the back core 31, and the injection molding wall one of the back core 31 is formed by the third forming part 312; when the first injection molding is performed, the first slider 41 moves into the back cavity 311, and the peripheral side of the first slider 41 is in engagement with the inner wall of the back cavity 311, i.e., the peripheral side of the first slider 41 is in contact with the end surface of the third forming part 312, so that the third forming part 312 and the first forming part 411 jointly form the bottom of the first injection molding cavity to process the inner forming surface of the first injection molding part A; when the back core 31 is rotated by 180°, most of the first injection molding part A is attached to the third forming part 312 to avoid dislocation or displacement of the first injection molding part A during the rotation, thereby ensuring product quality; preferably, the area of the third forming part 312 is greater than the area of the first forming part 411; when the second injection molding is performed, the second slider 51 moves into the back cavity 311, and the peripheral side of the second slider 51 is in engagement with the inner wall of the back cavity 311, i.e., the peripheral side of the second slider 51 is in contact with the end surface of the third forming part 312, at this time, the extension part 514 of the second slider 51 extends into the empty cavity on the lower side of the first injection molding part A, and the second forming part 511 is located on one side of the first injection molding part A, and the second injection molding cavity is jointly formed by the second forming part 511, the third forming part 312 and the assembly structure of the first injection molding part A connected with the second injection molding part B to process the inner forming surface of the second injection molding part B.

[0046] Embodiment 5:

[0047] As Figure 7 , 9, 11, embodiment 5 is different from embodiment 4 in that the back mold assembly 3 further comprises a first insert assembly 33 and a second insert assembly 34 arranged in the back mold cavity 311, the first insert assembly 33 is provided with a fourth forming part 331, the second insert assembly 34 is provided with a fifth forming part 341, and the inner forming surface of the first injection molded part A is formed by the third forming part 312, the fourth forming part 331 and the fifth forming part 341; in this embodiment, the first insert assembly 33 and the second insert assembly 34 are fixedly installed in the back mold core 31, and the third forming part 312, the fourth forming part 331 and the fifth forming part 341 jointly constitute the injection molded wall one of the back mold core 31, and the first forming part 411, the third forming part 312, the fourth forming part 331 and the fifth forming part 341 form the bottom of the first injection cavity to process the inner forming surface of the first injection molded part A; the third forming part 312 and the assembly structure in the first injection molded part A connected with the second injection molded part B form the bottom of the second injection cavity to process the inner forming surface of the second injection molded part B; when the structure of the first injection molded part A and the second injection molded part B is complex, the manufacturing difficulty of the back mold core 31 is correspondingly increased, therefore the first insert assembly 33 and the second insert assembly 34 are installed in the back mold core 31 to facilitate the decomposition of the complex structure and the separate processing, thereby reducing the manufacturing difficulty of the back mold core 31.

[0048] Embodiment 6:

[0049] As shown in Figure 7 , 9 , 11, embodiment 6 is based on any of the above embodiments, and has the following implementation manner: the back mold assembly 3 further comprises a third slider assembly 6 arranged on one side of the back mold core 31, the third slider assembly 6 comprises a third slider 61 and a first driving device 62 connected with the third slider 61, the first driving device 62 is used to drive the third slider 61 to extend and retract relative to the back mold core 31, the third slider 61 is provided with a seventh forming part 611, the seventh forming part 611 is used to form the outer forming surface of the second injection molded part B, and the second injection cavity is formed by the movement of the second slider 51 and the third slider 61 towards the back mold cavity 311 and the enclosure between the second front mold core 21.

[0050] Further, as shown in Figure 7As shown, the back mold assembly 3 further comprises a mounting plate 35 arranged between the back mold core 31 and the rotating assembly 32, the mounting plate 35 is provided with a first mounting groove 351 for mounting the back mold core 31, a second mounting groove 352 for mounting the third slider assembly 6, the first mounting groove 351 is in communication with the second mounting groove 352, and in this embodiment, the second mounting groove 352 is arranged adjacent to one side of the first mounting groove 351, and the second mounting groove 352 is close to the edge of the mounting plate 35, the back mold core 31 is further provided with a moving channel 313 in communication with the back mold cavity 311, the first driving device 62 is fixedly installed in the second mounting groove 352, and the third slider 61 is towards the back mold core 31, when the second injection is performed, the third slider 61 is driven by the first driving device 62 to move along the moving channel 313 towards the back mold cavity 311, so that the seventh forming part 611 forms the outer side surface of the second injection part B. Optionally, the first driving device 62 adopts a cylinder driving device, a slider driving device, etc.

[0051] Further, the second limiting part 512 extends obliquely from the second forming part 511 towards the top wall of the second slider 51, so as to provide a space for the seventh forming part 611 of the third slider 61, avoiding the collision between the third slider 61 and the second slider 51, thereby improving the product quality and protecting the second slider 51 and the third slider 61; thus, when the second injection is performed, the third slider assembly 6 needs to be started. Moreover, whether to use the third slider 61 can be considered according to the structure of the second injection part B.

[0052] Embodiment 7:

[0053] As Figure 2—3, the embodiment 7 is based on any one of the embodiments 1-5, and has the following implementation: the first front mold component 1 further comprises a first supporting plate 12 for mounting the first front mold core 11, the first supporting plate 12 is used for mounting the first front mold core 11 in a two-color injection mold, the first supporting plate 12 is provided with a third mounting groove 121 for mounting the first front mold core 11, a fourth mounting groove 122 for mounting the second driving device 42, the third mounting groove 121 is in communication with the fourth mounting groove 122, the first slider 41 moves towards the first front mold cavity 111 through the second driving device 42, and there is a first gap between the first slider 41 and the first front mold core 11, and the first injection cavity comprises the first gap; in this embodiment, the depth of the third mounting groove 121 is greater than the depth of the fourth mounting groove 122, so that the first slider 41 is spaced apart from the first front mold core 11 when moving towards the first front mold cavity 111, so as to form the first gap between the first slider 41 and the first front mold core 11, when the first injection is performed, the first slider 41 moves into the rear mold cavity 311, and the first slider 41 is in close contact with the rear mold core 31, so as to facilitate the formation of the first injection cavity. Optionally, the second driving device 42 adopts a cylinder driving device, a slider driving device, etc.

[0054] Embodiment 8:

[0055] As shown in Figure 4 —5, the embodiment 8 is based on any one of the embodiments 1-5 and embodiment 7, and has the following implementation: the second front mold component 2 further comprises a second supporting plate 22 for mounting the second front mold core 21, the second supporting plate 22 is used for mounting the second front mold core 21 in a two-color injection mold, the second supporting plate 22 is provided with a fifth mounting groove 221 for mounting the second front mold core 21, a sixth mounting groove 222 for mounting the third driving device 52, the fifth mounting groove 221 is in communication with the sixth mounting groove 222, the second slider 51 moves towards the second front mold cavity 211 through the third driving device 52, and there is a second gap between the second slider 51 and the second front mold core 21, and the second injection cavity comprises the second gap; in this embodiment, the depth of the fifth mounting groove 221 is greater than the depth of the sixth mounting groove 222, so that the second slider 51 is spaced apart from the second front mold core 21 when moving towards the second front mold cavity 211, so as to form the second gap between the second slider 51 and the second front mold core 21, when the second injection is performed, the second slider 51 moves into the rear mold cavity 311, and the second slider 51 is in close contact with the rear mold core 31, so as to facilitate the formation of the second injection cavity. Optionally, the third driving device 52 adopts a cylinder driving device, a slider driving device, etc.

[0056] Example 9:

[0057] Example 9, based on any of the above embodiments, has the following implementation: The rotating assembly 32 has rear mold cores 31 on both sides, with a plurality of rear mold cores 31, each rear mold core 31 containing a plurality of rear mold cavities 311, the rear mold cavities 311 being arranged opposite to each other. The first front mold core 11 and the second front mold core 21 are correspondingly arranged with a plurality of rear mold cores 31 relative to the rear mold cores 31. Preferably, the rotating assembly 32 has mounting plates 35 on both sides, each mounting plate 35 containing two vertically arranged rear mold cores 31, each rear mold core 31 containing two horizontally arranged rear mold cavities 311, and each rear mold cavity 311 being configured with a corresponding third slider assembly 6. Correspondingly, the first support plate 12 has two vertically arranged first front mold cores 11, each of which has two horizontally arranged first front mold cavities 111. Each first front mold cavity 111 corresponds one-to-one with each of the rear mold cavities 311, and each first front mold cavity 111 is equipped with a corresponding first slider assembly 4. The second support plate 22 has two vertically arranged second front mold cores 21, each of which has two horizontally arranged second front mold cavities 211. Each second front mold cavity 211 corresponds one-to-one with each of the rear mold cavities 311, and each second front mold cavity 211 is equipped with a corresponding second slider assembly 5. This is to improve production efficiency. In actual production, the specific structure and quantity of the rear mold core 31, the first front mold core 11, and the second front mold core 21 can be customized according to the actual needs of the factory.

[0058] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A color change mechanism for a two-color mold, characterized by comprising: The mold includes a first front mold assembly (1) and a second front mold assembly (2) arranged oppositely, a rear mold assembly (3) arranged between the first front mold assembly (1) and the second front mold assembly (2), the first front mold assembly (1) includes a first front mold core (11) and a first slider (41) sliding relative to the first front mold core (11), the second front mold assembly (2) includes a second front mold core (21) and a second slider (51) sliding relative to the second front mold core (21), the rear mold assembly (3) includes a rear mold core (31) and a rotating assembly (32) connected with the rear mold core (31), the rear mold core (31) is driven to rotate between the first front mold core (11) and the second front mold core (21) by the rotating assembly (32). The first front mold core (11) and the second front mold core (21) are respectively provided with a first front mold cavity (111) and a second front mold cavity (211), the rear mold core (31) is provided with a rear mold cavity (311), the rear mold core (31) corresponds to the first front mold core (11) or the second front mold core (21) and encloses a first mold cavity or a second mold cavity, the first mold cavity includes the first front mold cavity (111) and the rear mold cavity (311), the second mold cavity includes the second front mold cavity (211) and the rear mold cavity (311). The first slider (41) moves towards the first mold cavity to form a first injection cavity for processing a first injection part, the second slider (51) moves towards the second mold cavity to form a second injection cavity for processing a second injection part.

2. A color change mechanism for a two-color mold according to claim 1, wherein The first slider (41) is provided with a first forming part (411) and a first limiting part (412) adjacent to each other, the first limiting part (412) is higher than the first forming part (411) and forms a first limiting step (413) on one side of the first forming part (411), the first forming part (411) is driven to move into the first mold cavity by the first slider (41), the first slider (41) is in contact with the rear mold core (31), the first limiting step (413) is used for closing the first injection cavity, and an inner forming surface of the first injection part is formed by the first forming part (411).

3. The color change mechanism of a two-color mold according to claim 1, wherein The second slider (51) is provided with a second forming part (511) and a second limiting part (512) adjacent to each other, the second limiting part (512) is higher than the second forming part (511) and forms a second limiting step (513) on one side of the second forming part (511), the second forming part (511) is driven to move into the second mold cavity by the second slider (51), the second slider (51) is in contact with the rear mold core (31), the second limiting step (513) is used for closing the second injection cavity, and an inner forming surface of the second injection part is formed by the second forming part (511). An extension part (514) is further arranged at an end of the second slider (51), and the second forming part (511) is arranged between the extension part (514) and the second limiting step (513).

4. The color change mechanism of a two-color mold according to claim 1, wherein The back mould core (31) is provided with a third forming part (312) for forming an inner forming surface of the first injection-moulded part, and the first slider (41) or the second slider (51) is in contact with the third forming part (312) when the first slider (41) or the second slider (51) moves into the back mould cavity (311).

5. A colour change mechanism for a two-colour mould as claimed in claim 4, characterised in that The back mould assembly (3) further comprises a first insert assembly (33) and a second insert assembly (34) arranged in the back mould cavity (311), the first insert assembly (33) is provided with a fourth forming part (331), and the second insert assembly (34) is provided with a fifth forming part (341), and the third forming part (312), the fourth forming part (331) and the fifth forming part (341) form the inner forming surface of the first injection-moulded part.

6. The color change mechanism of a two-color mold according to claim 1, wherein The back mould assembly (3) further comprises a third slider (61) arranged on one side of the back mould core (31), and the third slider (61) is provided with a seventh forming part (611) for forming an outer forming surface of the second injection-moulded part, and the second slider (51) and the third slider (61) move into the back mould cavity (311) and form the second injection-moulded cavity together with the second front mould core (21).

7. A colour change mechanism for a two-colour mould as claimed in claim 6, characterised in that The back mould assembly (3) further comprises a mounting plate (35) arranged between the back mould core (31) and the rotating assembly (32), and the mounting plate (35) is provided with a first mounting groove (351) for mounting the back mould core (31) and a second mounting groove (352) for mounting the third slider (61), the first mounting groove (351) and the second mounting groove (352) are in communication, and the back mould core (31) is further provided with a moving channel (313) in communication with the back mould cavity (311), and the second mounting groove (352) is provided with a first driving device (62) connected with the third slider (61), and the first driving device (62) drives the third slider (61) to move along the moving channel (313) towards the back mould cavity (311).

8. The color change mechanism of a two-color mold according to claim 1, wherein The first front mould assembly (1) further comprises a first supporting plate (12) for mounting the first front mould core (11) and a second driving device (42) connected with the first slider (41), and the first supporting plate (12) is provided with a third mounting groove (121) for mounting the first front mould core (11) and a fourth mounting groove (122) for mounting the second driving device (42), the third mounting groove (121) and the fourth mounting groove (122) are in communication, the first slider (41) moves towards the first front mould cavity (111) through the second driving device (42), and there is a first gap between the first slider (41) and the first front mould core (11), and the first injection-moulded cavity comprises the first gap.

9. The color change mechanism of a two-color mold according to claim 1, wherein The second front mold component (2) further comprises a second supporting plate (22) for mounting the second front mold core (21), and a third driving device (52) connected with the second slider (51), the second supporting plate (22) is provided with a fifth mounting groove (221) for mounting the second front mold core (21), and a sixth mounting groove (222) for mounting the third driving device (52), the fifth mounting groove (221) is communicated with the sixth mounting groove (222), the second slider (51) is moved towards the second front mold cavity (211) by the third driving device (52), and a second gap exists between the second slider (51) and the second front mold core (21), and the second injection cavity comprises the second gap.

10. A colour change mechanism for a two-colour mould as claimed in any one of claims 1 to 9, characterised in that, The rotating assembly (32) is provided with the rear mold core (31) on both sides, the rear mold core (31) is provided with a plurality of rear mold cavities (311), and the rear mold cavities (311) are oppositely arranged, and the first front mold core (11) and the second front mold core (21) are correspondingly provided with a plurality of rear mold cavities (311) relative to the rear mold core (31).

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