Double-injection injection mold structure
By employing a molding slider and ejection mechanism in a double-shot injection mold, the problem of slider impacting the first shot product is solved, achieving damage-free demolding and structural simplification, thereby improving product quality and reducing costs.
Patent Information
- Application Number
- CN202520129648.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-01-17
AI Technical Summary
In traditional double-shot injection molds, the slider is prone to impacting the product from the first shot when the first and second shot molds are closed, resulting in damage to the quality of the finished product.
The design incorporates a molding slider, mounting groove, and ejection mechanism, which drive the molding slider to rise and fall vertically after the second-shot mold opens, preventing the slider from contacting the first-shot product. The ejection mechanism then enables the finished product to be demolded.
This avoids damage to the product from the slider, simplifies the mold structure, reduces production costs, and improves the molding quality of the product.
Smart Images
Figure CN223948413U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to injection mold technical field, concretely relates to a double -shot injection mold structure. BACKGROUND
[0002] Double -shot injection mold, also called double -color injection mold or double -material injection mold, is a kind of injection mold technology for producing double -color or double -material product, and it realizes twice forming through the coordinated work of the two sets of molds of double -shot molding machine, to produce double -color product.
[0003] The traditional double -shot injection mold mainly includes one -shot mold and two -shot mold, and the one -shot mold and two -shot mold are provided with inclined guide blocks and sliding blocks, to realize the opening and closing of one -shot mold and two -shot mold by the cooperation between inclined guide block and sliding block, however, after one -shot product injection molding, one -shot mold needs to be opened and closed again with two -shot mold, so that when closing with two -shot mold, sliding block will hit one -shot product, causing damage to one -shot product, affecting the quality of finished product. SUMMARY
[0004] The utility model is directed to the phenomenon that the sliding block of one -shot mold is easy to hit product and affect the quality of finished product in prior art, and the utility model provides a double -shot injection mold structure.
[0005] The technical scheme adopted by the utility model is: including one -shot movable mold, two -shot movable mold, fixed mold and ejection mechanism, the fixed mold is used to be closed with one -shot movable mold and two -shot movable mold to form one -shot mold and two -shot mold, the fixed mold is provided with fixed mold kernel, the fixed mold kernel is provided with installation groove, the installation groove is slidably provided with forming sliding block, the forming sliding block is provided with forming insert, the ejection mechanism is used to drive forming sliding block to vertically lift relative to installation groove after two -shot mold is opened, so that product is separated from forming insert.
[0006] Optionally, the installation groove is provided with fixed column, the forming sliding block is provided with plug -in groove matched with fixed column, the top end of fixed column is inserted through plug -in groove and extends from the top surface of forming sliding block, and the forming insert is fixedly arranged at the top end of fixed column.
[0007] Optionally, the number of fixed column and forming insert is multiple.
[0008] Optionally, the shape of installation groove and forming sliding block is matched, and the installation groove and forming sliding block are both provided in inverted trapezoidal shape.
[0009] Optionally, a plurality of guide portions are integrally formed on the outer side wall of forming sliding block, a plurality of guide grooves are arranged in installation groove, and the plurality of guide grooves and the plurality of guide portions one -to -one correspond and are plug -in matched.
[0010] Optionally, the ejection mechanism comprises a lower die plate arranged below the fixed die, an ejection plate arranged between the fixed die and the lower die plate, an ejector rod arranged between the ejection plate and the forming block, and a driving member for driving the ejection plate to move up and down, the bottom end of the ejector rod is fixedly connected to the side of the ejection plate facing the fixed die, and the top end of the ejector rod extends vertically upward into the installation slot and is fixedly connected to the forming block.
[0011] Optionally, the driving member comprises an ejection oil cylinder, and the piston rod of the ejection oil cylinder is fixedly connected to the side of the ejection plate away from the fixed die after penetrating through the lower die plate.
[0012] Optionally, a guide column is vertically arranged between the lower die plate and the fixed die, one end of the guide column is fixedly connected to the lower die plate, and the other end of the guide column penetrates through the ejection plate vertically upward and is fixedly connected to the fixed die.
[0013] Optionally, the forming block comprises a first forming block and a second forming block, the first forming block and the second forming block are symmetrically arranged, the opposite sides of the first forming block and the second forming block are provided with semicircular grooves, and the semicircular grooves on the first forming block and the second forming block cooperate to form the insertion slot.
[0014] Optionally, one-shot and two-shot movable dies are respectively provided with one-shot movable die cores and two-shot movable die cores, when the fixed die and the one-shot movable die are combined to form a one-shot mold, the one-shot movable die core, the fixed die core, the forming block and the forming insert cooperate to form a one-shot forming cavity, and when the fixed die and the two-shot movable die are combined, the two-shot movable die core, the movable die core and the forming block cooperate to form a two-shot forming cavity.
[0015] After the above technical scheme is adopted, the utility model has the beneficial effects that:
[0016] The present application cooperates the forming block, the installation slot and the ejection mechanism, the ejection mechanism drives the forming block to move vertically upward relative to the installation slot only after the two-shot product is opened, so that the one-shot product is not damaged when the two-shot mold is closed (i.e. the two-shot movable die and the fixed die are combined), and at the same time, the ejection mechanism drives the forming block to move vertically upward relative to the installation slot after the two-shot mold is opened, so that the finished product is separated from the forming insert, the demolding of the finished product is realized, compared with the prior art two-shot injection mold, the present application does not need to arrange the inclined guide block and the sliding block, so that the overall structure is simpler, the production cost of the mold is reduced, and the situation that the one-shot product is damaged is avoided, and the forming quality of the product is improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and are not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.
[0018] Fig. 1 is a sectional view of the closing of the movable die and the fixed die in the embodiment;
[0019] Fig. 2 is a sectional view of the closing of the movable die and the fixed die in the embodiment;
[0020] Fig. 3 is a schematic view of the assembly relationship between the forming block, the mounting groove and the forming insert in the embodiment;
[0021] Fig. 4 is a schematic view of the assembly relationship between the forming block, the mounting groove and the forming insert in the embodiment;
[0022] Fig. 5 is an exploded view of the forming block in the embodiment;
[0023] Fig. 6 is a schematic view of the assembly relationship between the forming block, the mounting groove and the forming insert in the embodiment;
[0024] Explanation of reference signs: 10, movable die; 11, movable die core; 20, movable die; 21, movable die core; 30, fixed die; 31, fixed die core; 32, mounting groove; 321, guide groove; 33, forming slider; 330, guide part; 331, first forming block; 332, second forming block; 34, forming insert; 35, fixed column; 36, plug-in groove; 361, semicircular groove; 40, ejection mechanism; 41, lower die plate; 42, ejector plate; 43, ejector rod; 44, piston rod; 45, guide column; 46, spring. DETAILED DESCRIPTION
[0025] The following will combine the drawings in the embodiments of the present application to Figs. 1-6 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.
[0026] It should be noted that if the embodiments of the utility model have the direction indication (such as up, down, left, right, front, back, etc.), the direction indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), if the specific posture changes, the direction indication also changes accordingly.
[0027] In addition, if the embodiments of the utility model have the description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, the meaning of "and / or" appearing in the whole text is that it includes three parallel schemes, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.
[0028] The embodiment relates to a double-shot injection mold structure, referring to Figs. 1-6 , comprising a first movable mold 10, a second movable mold 20, a fixed mold 30 and an ejection mechanism 40, wherein the fixed mold 30 is used for forming a first mold and a second mold by combining the first movable mold 10 and the second movable mold 20, the fixed mold 30 is provided with a fixed mold core 31, a mounting groove 32 is formed in the top surface of the fixed mold 30, a forming slide block 33 is slidably arranged in the mounting groove 32, the forming slide block 33 is flush with the mounting groove 32, a forming insert 34 is arranged on the top surface of the forming slide block 33, and the ejection mechanism 40 is used for driving the forming slide block 33 to vertically ascend relative to the mounting groove 32 after the second mold is opened, so that the finished product is separated from the forming insert 34, and the ejection demolding of the finished product is realized.
[0029] Since the injection mold provided by the embodiment is a double-shot injection mold, the working process of the double-shot injection mold is simply described here, and the main working process is as follows:
[0030] First step: first mold injection, the first movable mold 10 is combined with the fixed mold 30, and the first product plastic in a molten state is injected;
[0031] Second step: first mold opening, after the first product plastic is cooled to form the first product, the mold is opened, and the first movable mold 10 is separated from the fixed mold 30;
[0032] Third step: second mold injection, the second movable mold 20 is combined with the fixed mold 30, and the second product plastic in a molten state is injected;
[0033] The fourth step is to open the mold for the second time. After the two-shot product is cooled and shaped into a two-shot product (at this time, the two-shot product and the one-shot product are integrated, and the combination of the two-shot product and the one-shot product after the two-shot mold injection is completed is collectively referred to as a finished product), the mold is opened, and the two-shot movable mold 20 is separated from the fixed mold 30.
[0034] The fifth step is to eject the mold. The ejection mechanism 40 drives the forming slider 33 to vertically rise relative to the mounting groove 32, separates the finished product from the forming insert 34, and realizes the ejection of the finished product.
[0035] It can be understood that through the cooperation between the forming slider 33, the mounting groove 32, and the ejection mechanism 40, the ejection mechanism 40 drives the forming slider 33 to vertically slide upward relative to the mounting groove 32 only after the two-shot product is opened, so that the two-shot mold is not damaged when it is closed (the second time the mold is closed). At the same time, the ejection mechanism 40 drives the forming slider 33 to vertically slide upward relative to the mounting groove 32 when the mold is opened for the second time, separates the finished product from the forming insert 34, and realizes the ejection of the finished product. Compared with the prior art two-shot injection mold, the present scheme does not need to set the inclined guide block and the slider, so that the overall structure is simpler, the production cost of the mold is reduced, and the situation that the one-shot product is damaged is avoided, thereby improving the forming quality of the product.
[0036] Further, the one-shot movable mold 10 and the two-shot movable mold 20 are respectively provided with a one-shot movable mold core 11 and a two-shot movable mold core 21. When the fixed mold 30 is combined with the one-shot movable mold 10 to form a one-shot mold, the one-shot movable mold core 11, the fixed mold core 31, the forming slider 33, and the forming insert 34 cooperate to form a one-shot forming cavity. When the fixed mold 30 is combined with the two-shot movable mold 20, the two-shot movable mold core 21, the fixed mold core 31, and the forming slider 33 cooperate to form a two-shot forming cavity.
[0037] It can be understood that through the above arrangement, the one-shot product and the two-shot product can be stably formed during one-shot injection and two-shot injection.
[0038] Further, the mounting groove 32 is fixedly provided with a fixed column 35, and the forming slider 33 is provided with a plug-in groove 36 for plug-in cooperation with the fixed column 35. The top end of the fixed column 35 passes through the plug-in groove 36 and extends out of the top surface of the forming slider 33, and the forming insert 34 is fixedly arranged at the top end of the fixed column 35.
[0039] Through the cooperation of the fixed column 35 and the plug-in groove 36, and by arranging the forming insert 34 at the top end of the fixed column 35 extending out of the forming slider 33, the forming insert 34 remains stationary when the ejection mechanism 40 drives the forming slider 33 to vertically rise relative to the mounting groove 32, so that the forming slider 33 can eject the finished product on the forming insert 34.
[0040] Further, the number of the fixing columns 35 and the forming inserts 34 is multiple.
[0041] By setting the number of the fixing columns 35 and the forming inserts 34 as multiple, the single installation slot 32 and the forming slider 33 can form multiple finished products at a time, improving the production efficiency.
[0042] In the embodiment, the number of the fixing columns 35 and the forming inserts 34 in one installation slot 32 is two, and in other embodiments, it can also be set as one, three, four or other numbers. In addition, the number of the installation slots 32 on the fixed die core 31 is four, so that eight finished products can be formed at a time. In other embodiments, the number of the installation slots 32 can also be increased or decreased according to the actual situation, which is not limited here.
[0043] Further, the installation slot 32 is adapted to the shape of the forming slider 33, and the installation slot 32 and the forming slider 33 are both set as inverted trapezoids.
[0044] By setting the installation slot 32 and the forming slider 33 as inverted trapezoids, when the ejection mechanism 40 drives the forming slider 33 to slide relative to the installation slot 32, the forming slider 33 and the installation slot 32 can be stably matched, and the forming slider 33 is not easy to deviate.
[0045] To further improve the stability of the sliding between the forming slider 33 and the installation slot 32, a plurality of guide portions 330 are integrally formed on the outer side wall of the forming slider 33, and a plurality of guide grooves 321 are arranged in the installation slot 32, and the plurality of guide grooves 321 correspond to the plurality of guide portions 330 one by one and are inserted and matched.
[0046] In the embodiment, the number of the guide portions 330 and the guide grooves 321 is four, and the four guide portions 330 are distributed at the four corners of the outer side of the forming slider 33, and the guide grooves 321 are distributed at the four corners of the inner side of the installation slot 32, so that the stability of the sliding between the forming slider 33 and the installation slot 32 is improved by the arrangement of the guide portions 330 and the guide grooves 321.
[0047] Further, the ejection mechanism 40 includes a lower die plate 41 arranged below the fixed die 30, a ejection plate 42 which can be arranged between the fixed die 30 and the lower die plate 41, a ejector rod 43 arranged between the ejection plate 42 and the forming slider 33, and a driving member for driving the ejection plate 42 to vertically ascend and descend between the fixed die 30 and the lower die plate 41. The lower die plate 41 is fixedly arranged directly below the fixed die 30, the bottom end of the ejector rod 43 is fixedly connected to the side of the ejection plate 42 facing the upper die, and the top end of the ejector rod 43 extends vertically upward and extends into the installation slot 32 and is fixedly connected to the forming slider 33.
[0048] It can be understood that the driving member drives the ejection plate 42 to vertically lift between the lower die plate 41 and the fixed die 30, drives the ejection rod to vertically lift relative to the fixed die 30, drives the forming slider 33 to vertically lift relative to the mounting groove 32, and then separates the finished product from the forming insert 34, thereby achieving the ejection demolding of the finished product.
[0049] Further, the driving member includes an ejection oil cylinder (only the piston rod 44 is shown in the figure), and the piston rod 44 of the ejection oil cylinder is fixedly connected to the side of the ejection plate 42 away from the fixed die 30 after penetrating through the lower die plate 41.
[0050] It should be noted that the ejection oil cylinder is fixed on the injection molding machine, that is, the cylinder body of the ejection oil cylinder is installed in the injection molding machine, and the piston rod 44 of the ejection oil cylinder is fixedly connected to the ejection plate 42 after penetrating into the lower die plate 41. By driving the ejection oil cylinder to extend and retract, the ejection of the finished product is achieved.
[0051] Further, a guide column 45 is vertically arranged between the lower die plate 41 and the fixed die 30, one end of the guide column 45 is fixedly connected to the lower die plate 41, and the other end of the guide column 45 penetrates through the ejection plate 42 vertically upward and is fixedly connected to the fixed die 30.
[0052] It can be understood that the arrangement of the guide column 45 enables the ejection plate 42 to stably vertically lift between the lower die plate 41 and the fixed die 30, thereby stably ejecting the product.
[0053] In addition, the guide column 45 is further provided with a spring 46 to automatically reset the ejection plate 42 through the spring 46.
[0054] Further, the forming slider 33 includes a first forming block 331 and a second forming block 332, the first forming block 331 and the second forming block 332 are symmetrically arranged, and the opposite sides of the first forming block 331 and the second forming block 332 are both provided with semicircular grooves 361, and the semicircular grooves 361 on the first forming block 331 and the semicircular grooves 361 on the second forming block 332 cooperatively form the plug-in groove 36.
[0055] By dividing the forming slider 33 into the first forming block 331 and the second forming block 332, the assembly and disassembly of the forming slider 33 are more convenient for maintenance and replacement, and the production cost is also reduced.
[0056] The above is only used to illustrate the technical scheme of the present application, not to limit it, and other modifications or equivalent replacements of the technical scheme of the present application made by those skilled in the art should be covered in the scope of the claims of the present application.
Claims
1. A two-shot injection mold structure, characterized by, The utility model provides a two -shot moulding device, including a shot mould (10), two shot mould (20), fixed mould (30) and ejecting mechanism (40), the fixed mould (30) is used to with a shot mould (10) and two shot mould (20) close mould and form a shot mould and two shot mould, be provided with fixed mould kernel (31) on the fixed mould (30), install the groove (32) of being seted up on the fixed mould kernel (31), the forming slider (33) of slidingly being provided with in the install groove (32), be provided with forming insert (34) on the forming slider (33), the ejecting mechanism (40) is used to drive forming slider (33) vertical lifting relative to install groove (32) after two shot mould opens mould, make finished product and forming insert (34) separate.
2. A two-shot injection mold structure according to claim 1, wherein, The install groove (32) is provided with a fixed column (35), the forming slider (33) is provided with a plug-in groove (36) matched with the fixed column (35), the top end of the fixed column (35) is inserted into the plug-in groove (36) and extends from the top surface of the forming slider (33), and the forming insert (34) is fixedly arranged on the top end of the fixed column (35).
3. A two-shot injection mold structure according to claim 2, wherein, The number of the fixed column (35) and the forming insert (34) is multiple.
4. The two-shot injection mold structure of claim 1, wherein, The install groove (32) and the forming slider (33) are matched in shape, and the install groove (32) and the forming slider (33) are both inverted trapezoidal.
5. A two-shot injection mold structure according to claim 4, wherein, The outer side wall of the forming slider (33) is integrally formed with a plurality of guide portions (330), and the install groove (32) is provided with a plurality of guide grooves (321).
6. A two-shot injection mold structure according to claim 1, wherein, The ejecting mechanism (40) comprises a lower die plate (41) arranged below the fixed mould (30), an ejecting plate (42) vertically arranged between the fixed mould and the lower die plate (41), a top rod (43) arranged between the ejecting plate (42) and the forming block, and a driving member for driving the ejecting plate (42) to vertically move up and down, the bottom end of the top rod (43) is fixedly connected to one side of the ejecting plate (42) facing the fixed mould (30), and the top end of the top rod (43) vertically extends into the install groove (32) and is fixedly connected to the forming slider (33).
7. A two-shot injection mold structure according to claim 6, wherein, The driving member comprises an ejecting oil cylinder, and the piston rod (44) of the ejecting oil cylinder is fixedly connected to one side of the ejecting plate (42) away from the fixed mould (30) after penetrating through the lower die plate (41).
8. A two-shot injection mold structure according to claim 6, wherein, The lower die plate (41) and the fixed mould (30) are vertically provided with a guide column (45), one end of the guide column (45) is fixedly connected to the lower die plate (41), and the other end of the guide column (45) vertically penetrates through the ejecting plate (42) and is fixedly connected to the fixed mould (30).
9. A two-shot injection mold structure according to claim 2, wherein, The forming slider (33) comprises a first forming block (331) and a second forming block (332), the first forming block (331) and the second forming block (332) are symmetrically arranged, the opposite sides of the first forming block (331) and the second forming block (332) are respectively provided with semicircular grooves (361), and the semicircular grooves (361) on the first forming block (331) and the second forming block (332) cooperate to form the plug-in groove (36).
10. The two-shot injection mold structure of claim 1, wherein, The one-shot die (10) and the two-shot die (20) are respectively provided with a one-shot die core (11) and a two-shot die core (21), when the fixed die (30) and the one-shot die (10) are closed to form a one-shot die, the one-shot die core (11), the fixed die core (31), the forming slider (33) and the forming insert (34) cooperate to form a one-shot forming cavity, when the fixed die (30) and the two-shot die (20) are closed, the two-shot die core (21), the movable die core and the forming slider (33) cooperate to form a two-shot forming cavity.