Mold capable of conveniently controlling glue injection flow

Abstract

The utility model discloses a mould convenient to control glue injection flow, which comprises a movable mould, a fixed mould, a water cooling component, a first forming component, a second forming component and a glue injection component, the first forming component and the second forming component form a cavity, the fixed mould comprises an upper fixing plate, a material shifting plate, a first pulling plate and a fixed mould plate, and the upper fixing plate is provided with a glue injection port. The glue injection assembly comprises a bolt, a glue injection pipeline and a cut-off piece, the glue injection pipeline comprises a first pipe, a second pipe and a third pipe, a first groove used for containing the first pipe and a sliding groove horizontally perpendicular to the first groove are formed in the first pulling plate, and a second groove capable of corresponding to the first groove and a kidney-shaped groove parallel to the extending direction of the sliding groove are formed in the cut-off piece; a screw hole matched with the kidney-shaped groove is formed in the first pulling plate, and the cut-off piece penetrates through the kidney-shaped groove through a bolt to be connected with the screw hole. The device has the advantages that the glue injection flow can be quickly and accurately controlled, the disassembly is convenient, and a combination line of a glue injection pipeline and a product can be driven to move, so that the appearance effect of the product is improved.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a mold which is convenient for controlling the flow rate of glue injection. Background Art

[0002] During injection molding, the amount of glue injected affects the final product in several ways. First, it affects product size: The amount of glue injected directly affects the final product's dimensions. Excessive injection may cause the product to exceed the design range, resulting in waste and defective products. Conversely, insufficient injection may prevent the product from completely filling the mold, causing underfill or short shots. Second, it affects product strength: The appropriate amount of glue injected helps ensure the product's mechanical strength. Insufficient injection may result in voids or incompletely fused areas within the product, reducing its strength and durability. While excessive injection does not directly reduce strength, it may make the product excessively thick, adding unnecessary weight and cost. Third, it affects product surface quality: The amount of glue injected also affects the product's surface quality. Excessive injection may cause surface defects such as bubbles and silver streaks, while insufficient injection may result in an uneven surface or visible filler marks. Fourth, it affects cooling time: The amount of glue injected also affects the product's cooling time. Generally speaking, the larger the injection amount, the longer the cooling time required. This not only affects production efficiency but may also cause product deformation due to uneven cooling. Existing shutoff mechanisms are often located at the end of the injection line. This design is not only difficult to operate, but also easily affects the position of the hose's glue outlet, reducing product molding accuracy.

[0003] For example, the Chinese patent with publication number CN115416228B discloses a shut-off two-color injection mold, which includes an upper mold, a lower mold and a glue pipe, the other end of the first injection channel is connected to the mold cavity, and the end of the first injection channel is provided with a shut-off assembly; the lower mold is provided with a lifting mechanism at a position corresponding to the surface of the molding cavity; the upper mold includes an upper mold, a driving mechanism and a movable core structure; the upper mold is provided with a movable core structure, including a movable channel and a core insert, the movable channel is provided on the upper mold to connect to the mold cavity, and the core insert is inserted into the movable channel; the upper end of the core insert is connected to the second driving mechanism above the upper mold; the upward exit stroke distance of the core insert in the movable channel is the same as the height of the corresponding part of the injection molded product, and after the core insert moves upward to a set height, a second injection channel is provided on the side wall of the movable channel below the bottom of the core insert, and the second injection channel is provided with a shut-off assembly. The shut-off assembly of the above-mentioned shut-off two-color injection mold is provided at the end of the pipeline, which makes it difficult to accurately control the injection amount.

[0004] In view of this, it is necessary to provide a mold that is convenient for controlling the injection flow rate. Summary of the Invention

[0005] The utility model provides a mold that is convenient for controlling the injection flow rate, which effectively solves the problem that the flow cut-off part of the existing mold is not easy to accurately control the injection amount.

[0006] The technical solution adopted in this utility model is:

[0007] A mold for easily controlling the injection flow rate of glue comprises a movable mold, a fixed mold, a water-cooling assembly, a first molding assembly arranged on the movable mold, a second molding assembly arranged on the fixed mold, and a glue injection assembly arranged on the fixed mold, wherein the first molding assembly and the second molding assembly form a cavity, the fixed mold comprises an upper fixed plate, a material removal plate, a first extraction plate, and a fixed mold plate, and the upper fixed plate is provided with a glue injection port. The glue injection assembly comprises bolts, a glue injection pipe, and a shut-off member arranged on the first extraction plate, the glue injection pipe comprises a No. 1 pipe arranged flat on the first extraction plate, a No. 2 pipe connecting the glue injection port and the No. 1 pipe, and a No. 3 pipe connecting the No. 1 pipe and the cavity, the first extraction plate is provided with a No. 1 groove for placing the No. 1 pipe and a slide groove horizontally and perpendicular to the No. 1 groove, the shut-off member is provided with a No. 2 groove corresponding to the No. 1 groove and a waist-shaped groove parallel to the extension direction of the slide groove, the first extraction plate is provided with a screw hole matching the waist-shaped groove, and the shut-off member is connected to the screw hole by a bolt passing through the waist-shaped groove.

[0008] Furthermore, the movable mold is also provided with a supporting pin for supporting the end of the No. 3 tube away from the fixed mold.

[0009] Furthermore, there are two No. 3 pipes, and the two No. 3 pipes are symmetrical with respect to the No. 2 pipe.

[0010] Furthermore, the first molding assembly includes a fixed mold core arranged on a fixed mold plate and four core-pulling slide assemblies, the core-pulling slide assembly includes a core-pulling assembly arranged on a first pulling plate and passing through the fixed mold plate, a slide slidably connected to the core-pulling assembly, and a slider arranged on the slide, the slide is provided with an inclined slide groove for slidingly connecting to the core-pulling assembly, and the side of the slider of the core-pulling slide assembly is used for the outer side of the molding product.

[0011] Furthermore, the movable mold includes a lower fixed plate, a stop iron arranged on the lower fixed plate, a movable mold plate arranged on the stop iron, a needle plate arranged between the stop irons, and a ejector pin arranged on the needle plate and passing through the fixed mold plate and the second molding assembly, and the second molding assembly is arranged on the movable mold plate.

[0012] Furthermore, a mold opening and closing protection mechanism is provided between the movable mold and the fixed mold, and the mold opening and closing protection mechanism includes a No. 4 block, a spring, a No. 1 block provided on the side of the first draw plate, a No. 2 block provided on the side of the fixed mold plate, and a No. 3 block provided on the movable mold plate. The No. 2 block is provided with a sliding groove for sliding connection with the No. 4 block, and the two ends of the spring are respectively abutted against the side walls of the sliding groove and the side walls of the No. 4 block. The No. 4 block is provided with a rectangular hole and a wedge-shaped groove. The No. 1 block passes through the No. 2 block and is slidably connected to the rectangular hole, and the No. 3 block passes through the No. 2 block and is slidably connected to the wedge groove.

[0013] The beneficial effects of the utility model are: it can quickly and accurately control the injection flow rate, is easy to disassemble and can drive the joint line between the injection pipe and the product to move, so as to improve the appearance of the product, thereby ensuring further control of the molding accuracy, strength and surface quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall schematic diagram of a mold for facilitating control of glue injection flow provided in an embodiment of the present application.

[0015] Figure 2 An exploded view of the first extraction plate, No. 1 pipe, bolts and shut-off parts of a mold for facilitating control of injection flow provided in an embodiment of the present application.

[0016] Figure 3 A schematic diagram of a first draw plate, a No. 1 pipe, bolts, and a shut-off member of a mold for facilitating control of the injection flow rate provided in an embodiment of the present application.

[0017] Figure 4 A schematic diagram of a fixed platen and a first molding assembly of a mold for facilitating control of glue injection flow provided in an embodiment of the present application.

[0018] Figure 5 A cross-sectional view of a fixed platen and a first molding assembly of a mold for facilitating control of glue injection flow provided in an embodiment of the present application.

[0019] Figure 6 Schematic diagram of the movable mold, second molding component, and core-pulling slide assembly of the mold provided in an embodiment of the present application for facilitating control of the injection flow rate.

[0020] Figure 7 A schematic diagram of a glue injection assembly of a mold that facilitates controlling the glue injection flow rate provided in an embodiment of the present application.

[0021] Figure 8 A schematic diagram of a mold opening and closing mold protection mechanism for facilitating control of the injection flow rate provided in an embodiment of the present application.

[0022] The following are marked in the figure: 1. Fixed mold; 2. Moving mold; 4. Second molding assembly; 11. Upper fixed plate; 12. Material stripping plate; 13. First drawing plate; 14. Fixed mold plate; 10. Glue injection port; 51. Bolt; 52. No. 1 pipe; 53. No. 2 pipe; 54. No. 3 pipe; 55. Shut-off piece; 550. No. 2 groove; 551. Waist groove; 131. No. 1 groove; 132. Slide; 6. Support pin; 31. Fixed mold core; 32. Core-pulling slide assembly; 321. Core-pulling; 322. Slide; 323. Slider; 21. Lower fixed plate; 22. Iron stop; 23. Moving mold plate; 24. Needle plate; 25. Ejector; 7. Mold opening and closing protection mechanism; 71. No. 1 block; 72. No. 2 block; 73. No. 3 block; 74. No. 4 block; 720. Slide groove; DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] like Figure 1 、 Figure 2 and Figure 3 As shown, an embodiment of the present application provides a mold that is convenient for controlling the injection flow rate, and its structure includes a movable mold 2, a fixed mold 1, a water-cooling component, a first molding component arranged on the movable mold 2, a second molding component 4 arranged on the fixed mold 1, and a glue injection component arranged on the fixed mold 1. The first molding component and the second molding component 4 form a cavity, and the fixed mold 1 includes an upper fixed plate 11, a material removal plate 12, a first extraction plate 13 and a fixed mold plate 14. The upper fixed plate 11 is provided with a glue injection port 10. The glue injection assembly includes a bolt 51, a glue injection pipe and a shut-off piece 55 arranged on the first withdrawal plate 13. The glue injection pipe includes a No. 1 pipe 52 laid flat on the first withdrawal plate 13, a No. 2 pipe 53 connecting the glue injection port 10 and the No. 1 pipe 52, and a No. 3 pipe 54 connecting the No. 1 pipe 52 and the cavity. The first withdrawal plate 13 is provided with a No. 1 groove 131 for placing the No. 1 pipe 52 and a slide groove 132 horizontally and vertically to the No. 1 groove 131. The shut-off piece 55 is provided with a No. 2 groove 550 corresponding to the No. 1 groove 131 and a waist-shaped groove 551 parallel to the extension direction of the slide groove 132. The first withdrawal plate 13 is provided with a screw hole matching the waist-shaped groove 551, and the shut-off piece 55 is connected to the screw hole by the bolt 51 passing through the waist-shaped groove 551.

[0025] It should be noted that the length of the connection between the first groove 131 and the second groove 550 is set to d.

[0026] In actual use, when the injection volume needs to be adjusted, after the upper fixing plate 11 and the material stripping plate 12 are removed, the bolts 51 are loosened, the shutoff member 55 is moved along the slide groove 132, and the shutoff member 55 is then fixed to the first withdrawal plate 13 using the bolts 51. The shutoff member 55 causes the portion of the No. 1 pipe 52 located in the No. 2 groove 550 to move synchronously, thereby changing the value of d and, consequently, the flow rate of the glue flowing from the No. 1 pipe 52 into the No. 2 groove 550.

[0027] In the above design, the injection flow rate can be controlled quickly and accurately, it is easy to disassemble and can drive the joint line between the injection pipe and the product to move, so as to improve the appearance of the product, thereby ensuring further control of the molding accuracy, strength and surface quality.

[0028] Specifically: Figure 7 As shown, the movable mold 2 is further provided with a supporting pin 6 for supporting the end of the No. 3 tube 54 away from the fixed mold 1.

[0029] In actual use, the support pin 6 is provided to support the No. 3 pipe 54 to prevent the No. 3 pipe 54 from being separated from the original injection position due to the insufficient strength and hardness of its own plastic material.

[0030] In the above design, the support ejector pin 6 is provided to further fix the injection tube and ensure the accuracy of the injection molded product.

[0031] Specifically: Figure 7 As shown, there are two No. 3 pipes 54 , and the two No. 3 pipes 54 are symmetrical with respect to the No. 2 pipe 53 .

[0032] In actual use, glue is injected through the two No. 3 pipes 54 at the same time.

[0033] In the above design, by providing two No. 3 pipes 54 for injecting glue at the same time, the speed of product molding can be increased and the pressure of the glue flowing in the cavity can be reduced.

[0034] Specifically: Figure 4 、 Figure 5 and Figure 6 As shown, the first molding assembly includes a fixed mold core 31 arranged on the fixed mold plate 14 and four core-pulling slide assemblies 32, the core-pulling slide assembly 32 includes a core pulling 321 arranged on the first pulling plate 13 and passing through the fixed mold plate 14, a slide 322 slidingly connected to the core pulling 321, and a slider 323 arranged on the slide 322, the slide 322 is provided with an inclined slide groove 132 for sliding connection with the core pulling 321, and the side of the slider 323 of the core-pulling slide assembly 32 is used for the outer side of the molding product.

[0035] In actual use, the core pulling 321 is moved by first moving the pulling plate 13 , and the movement of the core pulling 321 in the inclined sliding groove 132 drives the sliding seat 322 and the slider 323 to extend and retract.

[0036] In the above design, the structural design and specific implementation method of the first molding component can facilitate the stable molding and release of the product.

[0037] Specifically: Figure 1 and Figure 6 As shown, the movable mold 2 includes a lower fixed plate 21, a stop iron 22 arranged on the lower fixed plate 21, a movable mold plate 23 arranged on the stop iron 22, a needle plate 24 arranged between the stop iron 22, and a ejector pin 25 arranged on the needle plate 24 and passing through the fixed mold plate 14 and the second molding component 4, and the second molding component 4 is arranged on the movable mold plate 23.

[0038] In actual use, after the product is formed, the needle plate 24 is driven by an external device to drive the ejector pin 25 to eject the product.

[0039] In the above design, the structural design and specific implementation method of the movable mold 2 can quickly realize the removal of the product.

[0040] Specifically: Figure 1 and Figure 8 As shown, a mold opening and closing protection mechanism 7 is also provided between the movable mold 2 and the fixed mold 1, and the mold opening and closing protection mechanism 7 includes a No. 4 block 74, a spring (not shown in the figure), a No. 1 block 71 arranged on the side of the first draw plate 13, a No. 2 block 72 arranged on the side of the fixed mold plate 14, and a No. 3 block 73 arranged on the movable mold plate 23. The No. 2 block 72 is provided with a sliding groove 720 for sliding connection with the No. 4 block 74, and the two ends of the spring are respectively abutted against the side walls of the sliding groove 720 and the side walls of the No. 4 block 74, and the No. 4 block 74 is provided with a rectangular hole and a wedge-shaped groove, and the No. 1 block 71 passes through the No. 2 block 72 and is slidably connected to the rectangular hole, and the No. 3 block 73 passes through the No. 2 block 72 and is slidably connected to the wedge groove.

[0041] In the mold closing state, the spring is compressed, and the No. 1 block 71 extends into the rectangular hole, and the No. 3 block 73 extends into the wedge-shaped groove. When the mold is actually opened, the first plate 13 first drives the No. 1 block 71 to slide out of the rectangular hole, and then the No. 3 block 73 follows the movable plate 23 to slide out of the wedge-shaped groove. When the No. 3 block 73 slides out of the wedge-shaped groove, the spring resets and drives the No. 4 block 74 to slide along the sliding groove 720, so that the rectangular hole no longer corresponds to the No. 1 block 71, preventing the No. 1 block 71 from extending into the rectangular hole due to mold opening failure. When the mold is closed, the No. 3 block 73 first penetrates into the wedge groove and drives the No. 4 block 74 to slide along the sliding groove 720 toward the spring side, causing the spring to compress, and then the No. 1 block 71 extends into the rectangular groove.

[0042] In the above design, the structural design of the mold opening and closing protection mechanism 7 can effectively protect the safety of the mold when opening and closing the mold.

[0043] To further explain in detail, it should be understood that the above is only a specific embodiment of the present invention and is 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 scope of protection of the present invention.

Claims

1. A mold for controlling the flow rate of glue injection, comprising a movable mold (2), a fixed mold (1), a water-cooling component, a first molding component arranged on the movable mold (2), a second molding component (4) arranged on the fixed mold (1), and a glue injection component arranged on the fixed mold (1), wherein the first molding component and the second molding component (4) form a cavity, the fixed mold (1) comprises an upper fixed plate (11), a material stripping plate (12), a first extraction plate (13) and a fixed mold plate (14), the upper fixed plate (11) is provided with a glue injection port (10), and is characterized in that: The glue injection assembly comprises a bolt (51), a glue injection pipeline and a shut-off member (55) arranged on the first extraction plate (13). The glue injection pipeline comprises a No. 1 pipe (52) arranged flat on the first extraction plate (13), a No. 2 pipe (53) connecting the glue injection port (10) and the No. 1 pipe (52), and a No. 3 pipe (54) connecting the No. 1 pipe (52) and the cavity. The first extraction plate (13) is provided with a No. 1 groove (15) for placing the No. 1 pipe (52). 31) and a slide groove (132) that is horizontal and perpendicular to the first groove (131), the shut-off member (55) is provided with a second groove (550) that can correspond to the first groove (131) and a waist-shaped groove (551) that is parallel to the extending direction of the slide groove (132), the first extraction plate (13) is provided with a screw hole that matches the waist-shaped groove (551), and the shut-off member (55) is connected to the screw hole by a bolt (51) passing through the waist-shaped groove (551).

2. The mold for controlling the injection flow rate according to claim 1, characterized in that: The movable mold (2) is also provided with a supporting ejector pin (6) for supporting the end of the No. 3 tube (54) away from the fixed mold (1).

3. The mold for controlling the injection flow rate according to claim 1, characterized in that: There are two No. 3 pipes (54), and the two No. 3 pipes (54) are symmetrical with respect to the No. 2 pipe (53).

4. The mold for facilitating control of injection flow according to claim 1, characterized in that: The first molding assembly includes a fixed mold core (31) arranged on a fixed mold plate (14) and four core-pulling slide assemblies (32), the core-pulling slide assembly (32) including a core-pulling (321) arranged on a first pulling plate (13) and passing through the fixed mold plate (14), a slide (322) slidably connected to the core-pulling (321), and a slider (323) arranged on the slide (322), the slide (322) being provided with an inclined slide groove (132) for slidably connecting to the core-pulling (321), and the side surface of the slider (323) of the core-pulling slide assembly (32) being used for forming the outer side surface of the product.

5. The mold for facilitating control of injection flow according to claim 1, characterized in that: The movable mold (2) comprises a lower fixed plate (21), a stop iron (22) arranged on the lower fixed plate (21), a movable mold plate (23) arranged on the stop iron (22), a needle plate (24) arranged between the stop irons (22), and an ejector pin (25) arranged on the needle plate (24) and passing through the fixed mold plate (14) and a second molding assembly (4), wherein the second molding assembly (4) is arranged on the movable mold plate (23).

6. The mold for easily controlling the injection flow rate according to claim 1, characterized in that: A mold opening and closing protection mechanism (7) is also provided between the movable mold (2) and the fixed mold (1), and the mold opening and closing protection mechanism (7) comprises a No. 4 block (74), a spring, a No. 1 block (71) provided on the side of the first extraction plate (13), a No. 2 block (72) provided on the side of the fixed mold plate (14), and a No. 3 block (73) provided on the movable mold plate (23). The No. 2 block (72) is provided with a sliding groove (720) for sliding connection with the No. 4 block (74), and the two ends of the spring are respectively against the side walls of the sliding groove (720) and the side walls of the No. 4 block (74). The No. 4 block (74) is provided with a rectangular hole and a wedge-shaped groove. The No. 1 block (71) passes through the No. 2 block (72) and is slidably connected to the rectangular hole, and the No. 3 block (73) passes through the No. 2 block (72) and is slidably connected to the wedge-shaped groove.

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