Sealing plug injection mold

Abstract

The present invention discloses a sealing plug injection mold, comprising an upper movable template, a connecting plate, an upper guide plate, a lower movable template, an upper loading plate, an upper mold core, a lower mold core, a lower loading plate, a lower guide plate, and a mold base. After the lower surface of the upper mold core and the upper surface of the lower mold core are attached, a plurality of mutually independent sealing plug injection cavities are formed between the two. Two upper mold cores are arranged in the upper accommodating groove, and two lower mold cores are arranged in the lower accommodating groove. One upper mold core corresponds to one lower mold core. The upper end of the injection tube passes through the mold base and the lower guide plate and stops at the upper surface of the lower guide plate. A flow channel is provided on the lower surface of the lower loading plate. The flow channel passes through the lower mold core and the lower loading plate to form a one-to-one corresponding connection with the sealing plug injection cavity. The present invention has a reasonable structural design, can complete the injection molding of multiple sealing plugs at one time, and can realize automatic material removal to improve the injection molding efficiency.

Description

Technical Field

[0001] The invention relates to a sealing plug injection mould. Background Art

[0002] In the process of sealing plug injection molding, the commonly used injection molds have low injection efficiency due to unreasonable structural layout and cannot meet the needs of mass production of sealing plugs. Summary of the invention

[0003] In view of the above technical problems, an object of the present invention is to provide a sealing plug injection mold with reasonable structural design and high injection efficiency.

[0004] The technical solution for implementing the present invention is as follows:

[0005] A sealing plug injection mold comprises an upper movable template, a connecting plate, an upper guide plate, a lower movable template, an upper loading plate, an upper mold core, a lower mold core, a lower loading plate, a lower guide plate, and a mold base. The connecting plate is fixedly connected to the lower part of the upper movable template, the upper guide plate is fixedly connected to the lower part of the connecting plate, and the lower movable template is fixedly connected to the lower part of the upper guide plate. An assembly cavity is formed below the upper movable template, above the upper guide plate, and between the connecting plate.

[0006] The upper loading plate is fixedly connected to the lower movable template, and an upper accommodating groove is provided on the lower surface of the upper loading plate, and the upper mold core is assembled in the upper accommodating groove;

[0007] The lower loading plate is located below the upper loading plate, a lower receiving groove is provided on the upper surface of the lower loading plate, the lower mold core is assembled in the lower receiving groove, a lower guide plate is placed below the lower loading plate, the mold base is located below the lower guide plate, a guide column is fixedly provided on the mold base, and the guide column passes through the lower guide plate, the lower loading plate, the upper transfer plate, the lower movable template, the upper guide plate, and the connecting plate in sequence upward;

[0008] After the lower surface of the upper mold core and the upper surface of the lower mold core are attached to each other, a plurality of mutually independent sealing plug injection cavities are formed between the two. Two upper mold cores are installed in the upper accommodating groove, and two lower mold cores are installed in the lower accommodating groove. One upper mold core corresponds to one lower mold core, and 16 sealing plug injection cavities are formed between one upper mold core and one lower mold core.

[0009] An injection port and an injection tube connected to the injection port are provided at the bottom of the mold base. The upper end of the injection tube passes through the mold base and the lower guide plate and stops at the upper surface of the lower guide plate. A flow groove and a plurality of flow channels are provided on the lower surface of the lower loading plate. The flow channels pass through the lower mold core, the lower loading plate and the sealing plug injection cavity to form a one-to-one correspondence.

[0010] The assembly cavity is provided with a first moving plate and a second moving plate, wherein the first moving plate is located above the second moving plate.

[0011] A guide rod is installed between the upper movable template and the upper guide plate. The first movable plate is fixedly connected to the second movable plate and the guide rod passes through.

[0012] and a guide column whose upper end is limited between the first moving plate and the second moving plate, the lower end of which passes through the upper guide plate, the lower movable template and the upper loading plate, a spring compressed by the second moving plate and the lower movable template is sleeved on the guide column, and a spring through hole is opened on the upper guide plate to give way to the spring;

[0013] And multiple ejector rods between the upper end limit and the first moving plate and the second moving plate, the lower ends of the ejector rods pass through the upper guide plate, the lower movable template, and the upper loading plate and then extend into the sealing plug injection cavity, guide tubes corresponding to the number of ejector rods are installed in the lower movable template and the upper loading plate, the lower ends of the guide tubes are connected with the sealing plug injection cavity, the ejector rods are inserted into the guide tubes one by one and extend into the sealing plug injection cavity.

[0014] With the above scheme, the injection plastic enters the injection tube from the injection port, flows into each flow channel through the flow groove, and then enters the corresponding sealing plug injection cavity for injection molding; after injection molding, the upper movable template moves upward, and drives the lower upper loading plate and the upper mold core to move upward, so that the upper transfer plate is separated from the lower loading plate, and the upper mold core is separated from the lower mold core. During the separation process, the upper movable template loses pressure on the first moving plate due to the rise, and a gap is generated between the upper movable template and the first moving plate, so that the spring that has been under pressure between the second moving plate and the lower movable template stretches, and the extension of the spring can make the first moving plate and the second moving plate rise, thereby driving the ejector rod to retract upward, so that the molded sealing plug in the sealing plug injection cavity is automatically removed. The structural design of the present invention is reasonable, and the injection molding of 32 sealing plugs can be completed at one time, thereby improving the injection molding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 for Figure 1 Schematic diagram of the planar structure from the front view;

[0017] Figure 3 for Figure 1 AA section view in the figure;

[0018] Figure 4 for Figure 1 BB section view in the figure;

[0019] Figure 5 for Figure 1 CC section view in the figure;

[0020] Figure 6 for Figure 1 DD section view in;

[0021] Figure 7 It is a structural schematic diagram of the upper mold core in the present invention;

[0022] Figure 8 It is a structural schematic diagram of the lower mold core in the present invention;

[0023] Fig. 9 It is a structural schematic diagram of the lower loading plate in the present invention;

[0024] Fig.10 for Fig. 9 A rear view structural diagram of ;

[0025] Fig.11 It is a structural schematic diagram of the upper loading plate in the present invention;

[0026] Fig.12 for Fig.11 A rear view structural diagram of ;

[0027] Fig.13 It is a cross-sectional view of the upper mold core and the lower mold core when the mold is closed in the present invention;

[0028] Fig.14 for Figure 5 Enlarged view of the upper and lower mold cores;

[0029] Fig.15 It is a cross-sectional view between the mold base and the lower guide plate in the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment 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.

[0031] Please refer to Figure 1As shown in FIG. 15 , a sealing plug injection mold is assembled on an injection molding machine, and the mold is driven to close and separate by the lifting mechanism in the injection molding machine. The injection mold includes an upper movable template 1, a connecting plate 2, an upper guide plate 3, a lower movable template 4, an upper loading plate 5, an upper mold core 6, a lower mold core 7, a lower loading plate 8, a lower guide plate 9, and a mold base 10. The connecting plate 2 is fixedly connected to the lower part of the upper movable template 1 by screws, the upper guide plate 3 is fixedly connected to the lower part of the connecting plate by screws, and the lower movable template is fixedly connected to the lower part of the upper guide plate. An assembly cavity 11 is formed below the upper movable template, above the upper guide plate, and between the connecting plates. In a specific implementation, two connecting plates are arranged, which are distributed on both sides below the upper movable template. The upper movable template is connected to the lifting mechanism of the injection molding machine to drive the upper movable template to move.

[0032] The upper loading plate is fixedly connected to the lower movable template by screws, and an upper accommodating groove 12 is opened on the lower surface of the upper loading plate. The upper mold core is removably assembled (by screws) in the upper accommodating groove to facilitate the replacement of the upper mold core; the lower loading plate is located below the upper loading plate, and a lower accommodating groove 13 is opened on the upper surface of the lower loading plate. The lower mold core is removably assembled (by screws) in the lower accommodating groove, and a lower guide plate is placed below the lower loading plate, and the mold base is located below the lower guide plate. A guide column 14 is fixedly arranged on the mold base, and the guide column passes through the lower guide plate 9, the lower loading plate 8, the upper transfer plate 5, the lower movable template 4, the upper guide plate 3, and the connecting plate 2 in sequence upward to form a lifting guide.

[0033] After the lower surface of the upper mold core and the upper surface of the lower mold core are fitted together, a plurality of independent sealing plug injection cavities 15 are formed between the two. In a specific implementation, two upper mold cores are assembled in the upper accommodating groove, and two lower mold cores are assembled in the lower accommodating groove. One upper mold core corresponds to one lower mold core, and 16 sealing plug injection cavities are formed between one upper mold core and one lower mold core to improve the injection efficiency of the sealing plug.

[0034] An injection port 16 and an injection tube 17 connected to the injection port are provided at the bottom of the mold base. The upper end of the injection tube passes through the mold base and the lower guide plate and stops at the upper surface of the lower guide plate. A distribution flow groove 18 and a plurality of distribution flow channels 19 are provided on the lower surface of the lower loading plate. The distribution flow channels pass through the lower mold core and the lower loading plate to form a one-to-one correspondence with the injection cavity of the sealing plug. Among them, the distribution flow groove includes a main groove 20 connected to the injection tube and a branch groove 21 connected to the main groove. The branch groove is cross-shaped, and one branch groove connects four distribution flow channels 19. The injection tube is in the middle position. Through the guidance of the two main grooves, the injection plastic can basically flow into the eight branch grooves at the same time, and enter the injection cavity of the sealing plug through the distribution flow channel to improve the synchronization of the injection plastic flow.

[0035] A first moving plate 22 and a second moving plate 23 are arranged in the assembly cavity 11. The first moving plate is located above the second moving plate. A guide rod 24 is arranged between the upper movable template and the upper guide plate. The first moving plate is fixedly connected to the second moving plate and the guide rod passes through. There is also a guide column 25 whose upper end is limited between the first moving plate and the second moving plate. The lower end of the guide column passes through the upper guide plate, the lower movable template and the upper loading plate. A spring 26 compressed by the second moving plate and the lower movable template is sleeved on the guide column. A spring through hole 27 is opened on the upper guide plate to make way for the spring.

[0036] And multiple ejector rods 28 between the upper limit and the first moving plate and the second moving plate. The lower end of the ejector rod passes through the upper guide plate, the lower movable template, and the upper loading plate and then extends into the injection cavity of the sealing plug. The lower movable template and the upper loading plate are equipped with guide tubes 29 corresponding to the number of ejector rods. The lower end of the guide tube is connected to the injection cavity of the sealing plug. The ejector rods are inserted into the guide tubes one by one and extend into the injection cavity of the sealing plug. A heating pipe 30 is arranged in the upper mold core, the lower mold core and the lower guide plate to ensure the flow temperature of the injection plastic. A plurality of through holes 31 are opened on the mold base and the lower guide plate. The through holes are connected to the upper diverter groove. A push rod 32 is installed and removed in the through hole. The upper end of the push rod is in the diverter groove and is below the distribution channel. In this way, when there is a blockage at this place, the push rod can be unscrewed, and then the injection plastic at this place can be discharged downward after being heated by the heating pipe. Each distribution channel is arranged with a push rod. A rubber column 33 is screwed under the upper movable template, and passes through the first movable plate and the second movable plate. When the mold is closed, the lower end of the rubber column hits the upper surface of the upper guide plate to reduce the impact during the mold closing process.

[0037] The working process of the present invention is as follows: the state of the injection mold when it is closed is shown in the accompanying drawings of the present application, the injection plastic enters the injection tube from the injection port, and flows into each flow channel through the flow groove, and then enters the corresponding sealing plug injection cavity for injection molding; after injection molding, the upper movable template moves upward, and drives the lower upper loading plate and the upper mold core to move upward, so that the upper transfer plate is separated from the lower loading plate, and the upper mold core is separated from the lower mold core. During the separation process, the upper movable template loses pressure on the first moving plate due to the rise, and a gap is generated between the upper movable template and the first moving plate, so that the spring that has been under pressure between the second moving plate and the lower movable template stretches, and the extension of the spring can make the first moving plate and the second moving plate rise, thereby driving the ejector rod to retract upward, so that the molded sealing plug in the sealing plug injection cavity is automatically removed.

Claims

1. A sealing plug injection mold, comprising an upper movable template, a connecting plate, an upper guide plate, a lower movable template, an upper loading plate, an upper mold core, a lower mold core, a lower loading plate, a lower guide plate, and a mold base, characterized in that: The connecting plate is fixedly connected to the lower part of the upper movable template, the upper guide plate is fixedly connected to the lower part of the connecting plate, and the lower movable template is fixedly connected to the lower part of the upper guide plate. An assembly cavity is formed between the lower part of the upper movable template, the upper part of the upper guide plate and the connecting plate. The upper loading plate is fixedly connected to the lower movable template, and an upper accommodating groove is provided on the lower surface of the upper loading plate, and the upper mold core is assembled in the upper accommodating groove; The lower loading plate is located below the upper loading plate, a lower receiving groove is provided on the upper surface of the lower loading plate, the lower mold core is assembled in the lower receiving groove, a lower guide plate is placed below the lower loading plate, the mold base is located below the lower guide plate, a guide column is fixedly provided on the mold base, and the guide column passes through the lower guide plate, the lower loading plate, the upper loading plate, the lower movable template, the upper guide plate, and the connecting plate in sequence upward; After the lower surface of the upper mold core and the upper surface of the lower mold core are attached to each other, a plurality of mutually independent sealing plug injection cavities are formed between the two. Two upper mold cores are installed in the upper accommodating groove, and two lower mold cores are installed in the lower accommodating groove. One upper mold core corresponds to one lower mold core, and 16 sealing plug injection cavities are formed between one upper mold core and one lower mold core. The bottom of the mold base is provided with an injection port and an injection tube connected to the injection port, the upper end of the injection tube passes through the mold base and the lower guide plate and stops at the upper surface of the lower guide plate, and a distribution flow groove and a plurality of distribution flow channels are provided on the lower surface of the lower loading plate, and the distribution flow channels pass through the lower mold core, the lower loading plate and the sealing plug injection cavity to form a one-to-one correspondence connection; wherein the distribution flow groove includes a main flow groove connected to the injection tube, and a branch flow groove connected to the main flow groove, the branch flow groove is cross-shaped, and one branch flow groove connects four distribution flow channels; The assembly cavity is provided with a first moving plate and a second moving plate, wherein the first moving plate is located above the second moving plate. A guide rod is installed between the upper movable template and the upper guide plate. The first movable plate is fixedly connected to the second movable plate and the guide rod passes through. and a guide column whose upper end is limited between the first moving plate and the second moving plate, the lower end of which passes through the upper guide plate, the lower movable template and the upper loading plate, a spring compressed by the second moving plate and the lower movable template is sleeved on the guide column, and a spring through hole is opened on the upper guide plate to give way to the spring; And multiple ejector rods between the upper end limit and the first moving plate and the second moving plate, the lower ends of the ejector rods pass through the upper guide plate, the lower movable template, and the upper loading plate and then extend into the injection cavity of the sealing plug, guide tubes corresponding to the number of the ejector rods are installed in the lower movable template and the upper loading plate, the lower ends of the guide tubes are connected to the injection cavity of the sealing plug, the lower end diameter of the guide tubes is smaller than the size of the sealing plug, the ejector rods are inserted into the guide tubes one by one and extend into the injection cavity of the sealing plug.

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