A fully automatic two-color mold with multi-channel hidden glue feeding

Abstract

The invention relates to the technical field of injection molds, and proposes a fully automatic two-color mold with multi-channel hidden glue feeding, comprising an upper base, a lower base, an injection molding mechanism, a glue injection mechanism and a mold group 2, wherein the injection molding mechanism comprises an injection molding upper part and an injection molding lower part, and a mold group 1 is arranged in the two injection molding upper parts, the injection molding mechanism is used to fix the mold group 1 and drive the mold group 1 to rotate, the two glue injection mechanisms are respectively arranged on the two upper bases, the glue injection mechanism is used to inject glue, two mold groups 2 are provided, and the two mold groups 2 are respectively arranged on the two lower bases, and the mold group 2 is used to demold a workpiece after glue injection molding. Through the above technical scheme, the problem that the two-color mold in the prior art has obvious water outlet residues on the workpiece after glue injection and the residual raw materials on the mold are difficult to clean is solved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to a fully automatic two-color mold with multi-channel hidden glue feeding. Background Art

[0002] A two-color mold is a special mold that can use two different colors of plastic materials to perform injection molding twice on the same injection molding machine. The two-color mold can produce products with complex color patterns or material combinations. Generally, this molding process is also called two-material injection molding, which is usually completed by two sets of molds. The two sets of molds can be rotated and spliced. The upper parts of the two sets of molds are fixed on the base, and the lower parts of the two sets of molds are fixed on another base. The multi-channel injection molding method can make the material filling in the mold more efficient, the material filling in the mold more uniform, and more complex molds can be used. However, the corresponding multi-channel injection molding method increases the mold temperature faster during injection molding. For the two-color mold, a second injection molding is required. During the second injection molding, the base connected to the upper part of the mold needs to drive the upper parts of the two molds to rotate and exchange positions. After that, the upper parts of the two molds are spliced ​​with the lower parts of the mold respectively, and different materials are injected into the mold after the first injection molding through the mold for the second injection molding to achieve double-material injection molding.

[0003] When demolding the workpiece, there may be residual material on the mold, and there may be residual sprues on the edge of the mold, which requires the workpiece to be processed again and the residual sprues to be trimmed. The second processing process reduces the production efficiency. There will still be residual traces at the sprues after processing, affecting the appearance and quality of the workpiece. At the same time, the raw materials that are difficult to clean on the mold may affect the subsequent workpiece processing quality. Summary of the invention

[0004] The present invention proposes a fully automatic two-color mold with multi-channel hidden glue injection, which solves the problem in the prior art that after glue injection, obvious water outlet residues will remain on the workpiece, and the residual raw materials on the mold are difficult to clean.

[0005] The technical solution of the present invention is as follows:

[0006] A fully automatic two-color mold with multi-channel hidden glue feeding, comprising an upper base, a lower base, an injection molding mechanism, a glue injection mechanism and a mold group 2, wherein two injection molding mechanisms are provided, and the injection molding mechanism comprises an injection molding upper part and an injection molding lower part, the two injection molding upper parts are fixedly mounted on the upper base, the two injection molding lower parts are fixedly mounted on the lower base, a mold group 1 is arranged in the two injection molding upper parts, the injection molding mechanism is used to fix the mold group 1 and drive the mold group 1 to rotate, two glue injection mechanisms are provided, the two glue injection mechanisms are respectively arranged on the two upper bases, the glue injection mechanism is used to inject glue, two mold groups 2 are provided, the two mold groups 2 are respectively arranged on the two lower bases, and the mold group 2 is used to demold the workpiece after glue injection molding.

[0007] The injection molding upper part is provided with a glue injection port and a fixing frame, the glue injection port is opened on a side of the injection molding upper part close to the upper base, the glue injection port is connected to the glue injection mechanism, the fixing frame is fixedly arranged in the injection molding upper part, and the mold group is detachably arranged on the two fixing frames.

[0008] The lower part of the injection molding machine is provided with a driving cylinder, a stripping plate and a locking assembly, wherein the driving cylinder is provided in plurality, the stripping plate is fixedly provided on the output end of the driving cylinder, the stripping plate is provided with a plurality of stripping pillars, and the plurality of stripping pillars slide and penetrate the second mold set, and the locking assembly is provided in plurality, and a plurality of the locking assemblies are provided on the lower part of the injection molding machine, and the locking assembly is used for conveniently locking and releasing the second mold set.

[0009] The mold set 1 includes template 1 and template 2. Template 1 is detachably arranged on one of the fixing frames. A plurality of protrusions are arranged on a side of template 1 away from the fixing frame. Template 2 is detachably arranged on the other fixing frame.

[0010] The mold group two includes a template three, a glue inlet hole and a card slot. The template three is detachably arranged on the lower part of the injection molding. The template three is provided with a plurality of grooves, and the grooves correspond one-to-one to the protrusions on the template one. The glue inlet hole is opened on the groove on the template three. The card slot is arranged on the side of the template three, and the card slot is detachably connected to the glue injection mechanism.

[0011] When the template one and the template three are in contact with each other, the glue injection mechanism close to the template one performs injection molding between the template one and the template two to obtain a single-molded workpiece; when the template two and the template three are in contact with each other, the glue injection mechanism close to the template two performs injection molding between the template two and the single-molded workpiece to obtain a two-color workpiece.

[0012] The glue injection mechanism comprises a glue injection pipeline and a glue injection hole. A plurality of the glue injection pipelines are provided, and the plurality of the glue injection pipelines are connected with the glue injection port. The glue injection holes are opened on the glue injection pipelines, and the glue injection holes correspond one-to-one to the glue inlet holes.

[0013] The locking assembly includes an extrusion plate, a clamping frame and a pressing plate. The extrusion plate is arranged on the side of the template three, the clamping frame is slidably arranged on the lower part of the injection molding, the clamping frame is arranged on the side of the extrusion plate, a spring is arranged on the clamping frame, and the pressing plate is fixedly arranged on the fixed frame. When the upper part of the injection molding is in contact with the lower part of the injection molding, the pressing plate is in contact with the clamping frame. A disassembly push plate is arranged on the stripping template, and the disassembly push plate is arranged below the clamping frame.

[0014] The working principle and beneficial effects of the present invention are:

[0015] 1. In the present invention, by setting template 1, template 2 and template 3, a plurality of protrusions are set on one side of template 1 away from the fixing frame, template 2 is detachably set on another fixing frame, and template 2 is not set with protrusions. When the protrusion on template 1 penetrates into the groove on template 3, the glue injection eye injects colloid into the glue inlet, and the colloid flows in the groove to between template 1 and template 3 to form a primary workpiece. The colloid surrounds the protrusion in the groove to form an arch. When template 1 is separated from template 3 and template 2 is fitted with template 3, the second colloid is injected into the groove again through the glue inlet hole, and the colloid flows into between the primary workpiece and template 2 through the through hole in the arch structure formed by the primary workpiece in the groove. When the colloid injected for the second time solidifies on the primary workpiece, a two-color secondary workpiece is formed.

[0016] 2. In the present invention, by setting a glue injection pipe and a glue injection eye, the glue injection eye is set to be conical. When the injection molding upper part and the injection molding lower part are connected, the glue injection pipe extends into the side of the template three so that the glue injection eye is aligned with the glue inlet hole. At this time, the glue injected in the glue injection port moves into the glue injection eye through the injection molding pipe, and the glue moves into the glue inlet hole through the glue injection eye for glue injection. After the glue injection is completed, the injection molding upper part and the injection molding lower part are separated, and the glue injection eye is separated from the glue inlet hole. At this time, since the glue injection eye and the glue inlet hole fit together, the glue at the glue injection eye and the glue inlet hole is cut off. At the same time, since the glue injection eye is conical, the cut-off water outlet is very small, which has little effect on the shape of the workpiece. A support plate is set on the side of the glue injection pipe. As the glue injection pipe moves toward the glue inlet hole, the support plate enters the card slot, and the card slot squeezes the support plate to make the glue injection eye fit with the glue inlet hole.

[0017] 3. In the present invention, by setting up a glue injection mechanism, the water outlet can be automatically cut off when the glue injection eye and the glue inlet hole are separated after glue injection. By setting up mold group one and mold group two, an arched hidden water outlet can be formed so that the water outlet is hidden. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the present invention from another perspective;

[0021] Figure 3 It is a schematic cross-sectional structure diagram of the interior of the injection-molded upper part in the present invention;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of the cooperation between the template 2 and the lower part of the injection molding in the present invention;

[0023] Figure 5 It is a schematic diagram of the internal cross-sectional structure of the lower injection molding part in the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the template three cooperating with the lower part of the injection molding in the present invention;

[0025] Figure 7 It is a cross-sectional structural schematic diagram of the cooperation between the fixed plate and the second template in the present invention;

[0026] Figure 8 It is a schematic diagram of the internal cross-sectional structure of the cooperation between the template 1 and the template 3 in the present invention;

[0027] Fig. 9 It is a schematic diagram of the matching structure of the template 1, the template 2, the primary workpiece and the secondary workpiece in the present invention;

[0028] Fig.10 It is a schematic diagram of the decomposed structure of the template 1, the template 2, the primary workpiece, and the secondary workpiece in the present invention;

[0029] Fig.11 It is a schematic diagram of the internal cross-sectional structure of the glue injection pipeline in the present invention.

[0030] In the figure: 1. Upper base; 2. Lower base; 3. Injection molding upper part; 4. Injection molding lower part; 5. Glue injection port; 6. Fixing frame; 7. Driving cylinder; 8. Demolding plate; 9. Demolding support; 10. Template 1; 11. Template 2; 12. Template 3; 13. Glue inlet hole; 14. Clamping groove; 15. Glue injection pipe; 16. Glue injection eye; 17. Extrusion plate; 18. Clamping frame; 19. Pressing plate; 20. Disassembly push plate; 21. Primary workpiece; 22. Secondary workpiece. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 11 As shown, this embodiment proposes a multi-channel hidden glue-feeding fully automatic two-color mold, including an upper base 1, a lower base 2, an injection molding mechanism, a glue injection mechanism and a mold group 2, two injection molding mechanisms are provided, and the injection molding mechanism includes an injection molding upper part 3 and an injection molding lower part 4. The two injection molding upper parts 3 are fixedly installed on the upper base 1, and the two injection molding lower parts 4 are fixedly installed on the lower base 2. A mold group 1 is arranged in the two injection molding upper parts 3, and the injection molding mechanism is used to fix the mold group 1 and drive the mold group 1 to rotate. There are two glue injection mechanisms, which are respectively arranged on the two upper bases 1, and the glue injection mechanism is used to inject glue. There are two mold groups 2, and the two molds Group two is respectively arranged on two lower bases 2, and mold group two is used for demolding the workpiece after injection molding. During injection molding, the injection mechanism performs the first injection molding between template one 10 and template three 12, and then the upper base 1 drives the two injection molding upper parts 3 to move and separate from the two injection molding lower parts 4, and the primary workpiece 21 remains on template three 12. The upper base 1 drives the two injection molding upper parts 3 to rotate 180 degrees, so that the two injection molding upper parts 3 and the two injection molding lower parts 4 are staggered and docked. At this time, template two 11 is docked with template three 12 with the primary workpiece 21, and the injection mechanism close to template two 11 performs injection, so that the second colloid contacts the first colloid and is combined into a secondary workpiece 22.

[0033] like Figure 3 to Figure 4 As shown, the injection molding upper part 3 is provided with a glue injection port 5 and a fixing frame 6. The glue injection port 5 is opened on one side of the injection molding upper part 3 close to the upper base 1. The glue injection port 5 is connected to the glue injection mechanism. The fixing frame 6 is fixedly arranged in the injection molding upper part 3. The mold group 1 is detachably arranged on the two fixing frames 6.

[0034] like Figure 5 and Figure 8 As shown, a driving cylinder 7, a stripping plate 8 and a locking assembly are provided on the injection molding lower part 4. There are multiple driving cylinders 7. The stripping plate 8 is fixedly arranged on the output end of the driving cylinder 7. There are multiple stripping pillars 9 on the stripping plate 8. The multiple stripping pillars 9 slide and penetrate the mold group 2. There are multiple locking assemblies. The multiple locking assemblies are arranged on the injection molding lower part 4. The locking assembly is used to conveniently lock and release the mold group 2. After completing two injections, the secondary workpiece 22 is obtained. The output end of the driving cylinder 7 is extended to push the stripping plate 8 to move, and the stripping plate 8 pushes the stripping pillars 9 to move to push the secondary workpiece 22 out of the template three 12.

[0035] like Figures 4 to 10 As shown, the mold group 1 includes a template 10 and a template 2 11. The template 10 is detachably set on one of the fixing frames 6. A plurality of protrusions are set on the side of the template 10 away from the fixing frame 6. The template 2 11 is detachably set on the other fixing frame 6. No protrusion is set on the template 2 11. When the protrusion on the template 10 penetrates into the groove on the template 3 12, the glue injection hole 16 injects colloid into the glue inlet. At this time, the colloid flows in the groove to between the template 1 10 and the template 3 12 to form a primary workpiece 21. The colloid surrounds the protrusion in the groove to form an arch. When the template 10 is separated from the template 3 12 and the template 2 11 is fitted with the template 3 12, the second colloid is injected into the groove again through the glue injection hole 13. The colloid flows into between the primary workpiece 21 and the template 2 11 through the through hole in the arch structure formed in the groove of the primary workpiece 21. When the colloid injected for the second time solidifies on the primary workpiece 21, a two-color secondary workpiece 22 is formed.

[0036] like Figures 5 to 8 As shown, the mold group two includes a template three 12, a glue inlet hole 13 and a slot 14. The template three 12 is detachably arranged on the injection molding lower part 4. A plurality of grooves are arranged on the template three 12, and the grooves correspond one to one with the protrusions on the template one 10. The glue inlet hole 13 is opened on the groove on the template three 12. The slot 14 is arranged on the side of the template three 12. The slot 14 is detachably connected to the glue injection mechanism. Since the groove is arranged on the lower side of the template three 12, the arch structure on the secondary workpiece 22 will also appear on the lower side. Whether the arch structure is cut off or not, it will be hidden on the side blocked by the workpiece, thereby achieving the purpose of hiding. In the actual production process, the positions of the grooves and the protrusions can be adjusted according to different molds, so that the arch structure on the secondary workpiece 22 is always in a hidden position when the workpiece is installed, thereby achieving the purpose of hiding the water outlet.

[0037] like Figures 4 to 10 As shown, when template one 10 and template three 12 are fitted together, the glue injection mechanism close to template one 10 performs injection molding between template one 10 and template two 11 to obtain a single injection molded workpiece, and when template two 11 and template three 12 are fitted together, the glue injection mechanism close to template two 11 performs injection molding between template two 11 and the single injection molded workpiece to obtain a two-color workpiece.

[0038] like Figure 7 and Fig.11As shown, the glue injection mechanism includes a glue injection pipe 15 and a glue injection eye 16. A plurality of glue injection pipes 15 are provided, and the plurality of glue injection pipes 15 are connected to the glue injection port 5. The glue injection pipe 15 is provided with a glue injection eye 16, and the glue injection eye 16 corresponds to the glue inlet hole 13 one by one. The glue injection pipe 15 is provided on the injection molding upper part 3, and the glue injection eye 16 is provided in a conical shape. When the injection molding upper part 3 is docked with the injection molding lower part 4, the glue injection pipe 15 extends into the side of the template three 12, so that the glue injection eye 16 is aligned with the glue inlet hole 13. At this time, the colloid injected in the glue injection port 5 moves to the glue injection eye 16 through the injection molding pipe, and the colloid moves to the glue inlet hole 13 through the glue injection eye 16 for injection, and the glue injection is completed. Finally, the upper injection part 3 is separated from the lower injection part 4, and the injection eye 16 is separated from the glue inlet hole 13. At this time, since the injection eye 16 and the glue inlet hole 13 are in close contact with each other, the colloid at the injection eye 16 and the glue inlet hole 13 is cut off. At the same time, since the injection eye 16 is conical, the cut-off water outlet is very small, which has little effect on the shape of the workpiece. A support plate is provided on the side of the injection pipe 15. As the injection pipe 15 moves toward the glue inlet hole 13, the support plate enters the groove 14. The groove 14 squeezes the support plate to make the injection eye 16 fit with the glue inlet hole 13. In actual use, the shape and pipeline direction of the injection pipe 15 can be designed according to the actual shape of the mold and workpiece.

[0039] like Figures 4 to 6 As shown, the locking assembly includes an extrusion plate 17, a clamping frame 18 and a clamping plate 19. The extrusion plate 17 is arranged on the side of the template 3 12, the clamping frame 18 is slidably arranged on the injection molding lower part 4, the clamping frame 18 is arranged on the side of the extrusion plate 17, a spring is arranged on the clamping frame 18, and the clamping plate 19 is fixedly arranged on the fixing frame 6. When the injection molding upper part 3 and the injection molding lower part 4 are fitted, the clamping plate 19 is fitted with the clamping frame 18, and a disassembly push plate 20 is arranged on the stripping template 8. The disassembly push plate 20 is arranged below the clamping frame 18, and the spring pushes the clamping frame 18 to squeeze The pressing plate 17 is extruded so that the template three 12 is fixed on the injection molding lower part 4. When the injection molding upper part 3 is docked with the injection molding lower part 4, the inclined surface on the clamping plate 19 contacts the clamping frame 18, pushing the clamping frame 18 to slide toward the extrusion plate 17, so that the template three 12 is more tightly fixed on the injection molding lower part 4. When the driving cylinder 7 pushes the stripping plate 8 and the stripping support 9 to rise and push the secondary workpiece 22 out, the stripping plate 8 continues to move, and the disassembly push plate 20 contacts the clamping frame 18 to push the clamping frame 18 to slide and separate from the extrusion plate 17. At this time, the template three 12 can be removed.

[0040] In this embodiment, the glue injection pipe 15 on the side of template one 10 injects colloid into the glue inlet hole 13 through the glue injection eye 16, and the colloid moves between template three 12 and template one 10 through the groove on template three 12 to form a primary workpiece 21. At this time, the upper base 1 drives the two injection molding upper parts 3 to separate from the injection molding lower part 4. The upper base 1 drives the two injection molding upper parts 3 to rotate 180 degrees and then pushes the injection molding upper part 3 to dock with the injection molding lower part 4. At this time, the glue injection pipe 15 extends into the side of template three 12 and docks with the clamping groove 14. The clamping plate 19 contacts the clamping frame 18, so that the clamping frame 18 presses the extrusion plate 17. At this time, template two 11 is docked with template three 12 and the primary workpiece 21, and the glue injection eye 16 injects colloid into the glue inlet hole 13. The colloid moves between the primary workpiece 21 and template two 11 through the arch structure in the groove to form a secondary workpiece 22. When the glue injection eye 16 is separated from the glue inlet hole 13, the colloid is cut off.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully automatic two-color mold with multi-channel hidden glue feeding, characterized in that: include: Upper base (1); A lower base (2); Injection molding mechanisms, wherein two injection molding mechanisms are provided, and the injection molding mechanisms include an injection molding upper part (3) and an injection molding lower part (4), wherein the two injection molding upper parts (3) are fixedly mounted on the upper base (1), and the two injection molding lower parts (4) are fixedly mounted on the lower base (2), and a mold set 1 is provided in the two injection molding upper parts (3), and the injection molding mechanisms are used to fix the mold set 1 and drive the mold set 1 to rotate; A glue injection mechanism, wherein two of the glue injection mechanisms are provided, and the two glue injection mechanisms are respectively arranged on the two upper bases (1), and the glue injection mechanisms are used for performing glue injection; A second mold set, wherein two of the second mold sets are provided, and the two second mold sets are respectively provided on the two lower bases (2), and the second mold set is used to demould the workpiece after the injection molding. The injection molding upper part (3) is provided with: A glue injection port (5), the glue injection port (5) being arranged on a side of the injection molding upper part (3) close to the upper base (1), and the glue injection port (5) being connected to the glue injection mechanism; A fixing frame (6), wherein the fixing frame (6) is fixedly arranged in the injection molding upper part (3), and the mold set is detachably arranged on two of the fixing frames (6); The injection molding lower part (4) is provided with: A driving cylinder (7), wherein a plurality of driving cylinders (7) are provided; A stripping plate (8), wherein the stripping plate (8) is fixedly arranged on the output end of the driving cylinder (7), and a plurality of stripping pillars (9) are arranged on the stripping plate (8), and the plurality of stripping pillars (9) slide and penetrate the second mold set; A locking assembly, wherein a plurality of the locking assemblies are provided, and the plurality of the locking assemblies are arranged on the injection molding lower part (4), and the locking assemblies are used to conveniently lock and release the mold set 2; The mold set 1 comprises: Template 1 (10), the template 1 (10) being detachably mounted on one of the fixing frames (6), and a plurality of protrusions being disposed on a side of the template 1 (10) away from the fixing frame (6); Template 2 (11), the template 2 (11) is detachably arranged on another of the fixing frames (6); The mold set 2 comprises: Template three (12), the template three (12) is detachably arranged on the injection molding lower part (4), and the template three (12) is provided with a plurality of grooves, and the grooves correspond one by one to the protrusions on the template one (10); A glue inlet hole (13), wherein the glue inlet hole (13) is provided on a groove on the template three (12); A card slot (14), the card slot (14) being arranged on the side of the template three (12), the card slot (14) being detachably connected to the glue injection mechanism; When the template one (10) and the template three (12) are in contact with each other, the glue injection mechanism close to the template one (10) performs injection molding between the template one (10) and the template three (12) to obtain a single-molded workpiece; when the template two (11) and the template three (12) are in contact with each other, the glue injection mechanism close to the template two (11) performs injection molding between the template two (11) and the single-molded workpiece to obtain a two-color workpiece; The glue injection mechanism comprises: A glue injection pipeline (15), wherein a plurality of the glue injection pipelines (15) are provided, and the plurality of the glue injection pipelines (15) are connected to the glue injection port (5); A glue injection hole (16), the glue injection pipe (15) is provided with the glue injection hole (16); The glue injection pipeline is arranged at the upper part of the injection molding, and the glue injection eye is arranged in a cone shape. When the upper part of the injection molding is connected with the lower part of the injection molding, the glue injection pipeline extends into the side of the template three so that the glue injection eye is aligned with the glue inlet hole.

2. A fully automatic two-color mold with multi-channel hidden glue feeding according to claim 1, characterized in that: The glue injection holes (16) correspond one to one with the glue inlet holes (13).

3. A fully automatic two-color mold with multi-channel hidden glue feeding according to claim 2, characterized in that: The locking assembly comprises: An extrusion plate (17), the extrusion plate (17) being arranged on the side of the template three (12); A clamping frame (18), wherein the clamping frame (18) is slidably arranged on the injection molding lower part (4), the clamping frame (18) is arranged on the side of the extrusion plate (17), and a spring is arranged on the clamping frame (18); A clamping plate (19), wherein the clamping plate (19) is fixedly arranged on the fixing frame (6), and when the injection molding upper part (3) and the injection molding lower part (4) are in contact with each other, the clamping plate (19) and the clamping frame (18) are in contact with each other.

4. The fully automatic two-color mold with multi-channel hidden glue feeding according to claim 3 is characterized in that: The stripping plate (8) is provided with a disassembly push plate (20), and the disassembly push plate (20) is arranged below the clamping frame (18).

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