Injection mold convenient for taking out runner sprue

Abstract

The utility model discloses an injection mold convenient for taking out a runner sprue, which belongs to the technical field of molds, and comprises a rear mold, a front mold, an injection molding plate and a core-pulling plate, the side wall of the injection molding plate is fixedly connected with a guide column, and the core pulling plate is connected to the guide column in a sliding mode. The side wall of the core-pulling plate is fixedly connected with a core-pulling piece, and the core-pulling piece penetrates through the front mold to reach the injection molding product; a runner block is arranged on the side wall of the injection molding plate, and the core-pulling plate can be attached to a runner opening in the front mold; through the split design of the core-pulling piece and the runner block, a gap can be formed between the runner block and the core-pulling plate after demolding, and at the moment, a sprue located on the runner block is taken out through a mechanical arm, so that manual taking out is avoided, the production efficiency is improved, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection mold which is convenient for taking out a runner gate. Background Art

[0002] Injection molding, also known as injection and molding, is a molding method that combines injection and molding. The advantages of the injection molding method are fast production speed, high efficiency, and a variety of color and pattern varieties. It is suitable for mass production and molding processing fields of products with complex shapes. During the injection process, the raw materials melted by heat are injected into the molding cavity by a high pressure of an injection molding machine, and the injection products are obtained after cooling and solidification. It is widely used in the production of spare parts in various industries. For example, the outer shells of various pump bodies are widely molded by injection molds.

[0003] The structures of injection products vary greatly, and the mold design also changes with the structural changes of injection products. When the injection product is demolded from the front mold, at this time, a core-pulling part needs to be designed. In traditional molds, the core-pulling part and the runner block for flowing the injection are installed on the same plate. At this time, when it is necessary to take out the runner gate after a product is injection-molded, the core-pulling part and the runner block will affect the automatic taking-out by the machine, and only the manual taking-out method can be used. This will directly affect the production efficiency and there are also potential safety hazards.

[0004] In view of this, an injection mold which is convenient for taking out a runner gate is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problem that in the prior art, the core-pulling part and the runner block will affect the automatic taking-out by the machine, and an injection mold which is convenient for taking out a runner gate is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An injection mold which is convenient for taking out a runner gate includes a rear mold and a front mold, and further includes: an injection plate and a core-pulling plate; a guide post is fixedly connected to the side wall of the injection plate, and the core-pulling plate is slidably connected to the guide post; a core-pulling part is fixedly connected to the side wall of the core-pulling plate, and the core-pulling part penetrates through the front mold to the injection product; a runner block is arranged on the side wall of the injection plate, and the core-pulling plate can be attached to the runner opening on the front mold.

[0008] Preferably, an installation plate is fixedly connected to the side wall of the injection plate, and the runner block is fixedly installed on the side wall of the installation plate.

[0009] Preferably, the runner block is designed in multiple groups, and the number of core-pulling parts is the same as that of the runner blocks.

[0010] Preferably, there are two groups of runner blocks.

[0011] Preferably, it further includes a stripper plate; multiple groups of the runner blocks are fixedly installed on the side wall of the stripper plate, and the stripper plate is fixedly installed on the side wall of the mounting plate.

[0012] Preferably, through holes are provided on the core-pulling plate.

[0013] Preferably, a cover plate is fixedly installed on the side of the injection plate away from the front mold.

[0014] Compared with the prior art, the present utility model provides an injection mold that facilitates the removal of the runner gate, and has the following beneficial effects:

[0015] 1. For the injection mold that facilitates the removal of the runner gate, by adopting a split design for the core-pulling part and the runner block, after demolding, a gap will be formed between the runner block and the core-pulling plate. At this time, the gate on the runner block is removed by a robotic arm, thus avoiding manual removal and achieving the improvement of production efficiency and the reduction of safety hazards.

[0016] 2. For the injection mold that facilitates the removal of the runner gate, the cover plate and the mounting plate are detachably connected to both sides of the injection plate by bolts. After long-term injection molding, the cover plate and the mounting plate can be disassembled, which is convenient for maintaining the runner for flowing the injection molding material inside the injection plate and improving the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of an injection mold for facilitating the removal of a runner gate proposed by the present utility model Figure 1 ;

[0018] Figure 2 is a schematic structural view of an injection mold for facilitating the removal of a runner gate proposed by the present utility model Figure 2 ;

[0019] Figure 3 is a schematic structural view of an injection mold for facilitating the removal of a runner gate proposed by the present utility model Figure 3 ;

[0020] Figure 4 is a sectional view of an injection mold for facilitating the removal of a runner gate proposed by the present utility model;

[0021] Figure 5 is a schematic structural view of an injection mold for facilitating the removal of a runner gate proposed by the present utility model Figure 4 ;

[0022] Figure 6 is an injection mold for facilitating the removal of a runner gate proposed by the present utility model Figure 5 and an enlarged view of part A therein;

[0023] Figure 7Side view of the front mold of an injection mold that facilitates the removal of the runner gate proposed by the present utility model.

[0024] In the figure: 1. Rear mold; 101. Front mold; 102. Injection product; 103. Gate; 104. Runner opening; 2. Guide post; 201. Core-pulling plate; 202. Core-pulling part; 3. Injection plate; 301. Mounting plate; 302. Runner block; 303. Stripping plate; 4. Cover plate; 5. Through hole. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0027] Embodiment:

[0028] Referring to Figures 1 - 7 , an injection mold that facilitates the removal of the runner gate includes a rear mold 1 and a front mold 101. The rear mold 1 is fixed on a workbench or other objects, and also includes: an injection plate 3 and a core-pulling plate 201; a guide post 2 is fixedly connected to the side wall of the injection plate 3, and the number of guide posts 2 is 3 - 4. The core-pulling plate 201 is slidably connected to the guide post 2. As Figure 2 , the front mold 101 is also slidably connected to the guide post 2. A core-pulling part 202 is fixedly connected to the side wall of the core-pulling plate 201, and the core-pulling part 202 penetrates through the front mold 101 to the injection product 102.

[0029] A runner block 302 is arranged on the side wall of the injection plate 3, and the core-pulling plate 201 can be attached to the runner opening 104 on the front mold 101.

[0030] As Figures 1 - 4 , the core-pulling plate 201 is located on the side of the front mold 101 away from the rear mold 1, the injection plate 3 is located at one end of the guide post 2 away from the rear mold 1, and the guide post 2 slides on the rear mold 1 and plays a guiding role during injection molding.

[0031] The injection plate 3, the front mold 101, and the core-pulling plate 201 are all externally connected to a driving source, such as a hydraulic cylinder or a pneumatic cylinder, to drive the injection plate 3, the front mold 101, and the core-pulling plate 201 to move respectively.

[0032] During injection molding, the injection molding plate 3, the front mold 101, and the core-pulling plate 201 are driven by a driving source to move closer to the rear mold 1 until they are in mutual contact, as shown in Figure 1 . At this time, the core-pulling member 202 penetrates through the front mold 101 and extends to the area where the injection molded product 102 is located. After the runner block 302 penetrates through the core-pulling plate 201, it abuts against the runner port 104 on the front mold 101.

[0033] The injection molding plate 3, the mounting plate 301, the stripper plate 303, and the runner block 302 are all provided with runners for the flow of injection molding material.

[0034] The injection molding material enters through the injection port on the injection molding plate 3, then flows into the runner block 302 through the runner, and then enters the injection area through the runner port 104 to form the injection molded product 102. At this time, as shown in Figures 4 - 6 , the core-pulling member 202 abuts against the inner wall of the injection molded product 102.

[0035] When taking out the material, that is, when taking out the injection molded product 102, first, the front mold 101, the core-pulling plate 201, and the injection molding plate 3 are driven by the driving source to move away from the rear mold 1 at the same time. At this time, the injection molded product 102 adheres to the front mold 101. Then, the injection molding plate 3 is driven to move, driving the runner block 302 to disengage from the runner port 104. Finally, the core-pulling plate 201 is driven to move to perform core-pulling, that is, the core-pulling member 202 is separated from the inner wall of the injection molded product 102 to achieve demolding.

[0036] On one side of the runner block 302 close to the runner port 104, there is a hook. During injection molding, the hook is integrated with the gate 103. When the injection molding plate 3 moves, the gate 103 in the runner port 104 is taken out by the hook.

[0037] At this time, as shown in Figure 2 , Figure 4 , Figure 7 , by adopting a split design for the core-pulling member 202 and the runner block 302, the core-pulling member 202 is fixed on the core-pulling plate 201, and the runner block 302 is fixed on the injection molding plate 3. After demolding, a gap will be formed between the runner block 302 and the core-pulling plate 201 without any object blocking. At this time, through the robotic arm, the gate 103 on the runner block 302 is taken out. Since there is no interference from any object, it can be directly taken out from above by the robotic arm, thereby avoiding manual taking out to improve production efficiency and reduce safety hazards.

[0038] The side wall of the injection molding plate 3 is fixedly connected with a mounting plate 301, and the runner block 302 is fixedly installed on the side wall of the mounting plate 301.

[0039] The mounting plate 301 is fixed to one side of the injection plate 3 close to the front mold 101 by bolts. A cover plate 4 is fixedly installed on the side of the injection plate 3 away from the front mold 101, and the cover plate 4 is also fixed by bolts.

[0040] The cover plate 4 and the mounting plate 301 are detachably connected to both sides of the injection plate 3 by bolts. After long-term injection molding, the cover plate 4 and the mounting plate 301 can be disassembled to facilitate the repair and maintenance of the runner for flowing the injection molding material in the injection plate 3, improving the convenience of repair and maintenance.

[0041] The runner blocks 302 are designed in multiple groups, preferably two groups, and the number of core-pulling parts 202 is the same as that of the runner blocks 302.

[0042] One runner block 302 corresponds to one core-pulling part 202, and the two groups cooperate with each other. By designing the number of core-pulling parts 202 and the multiple groups of runner blocks 302, multiple injection molding products 102 can be injection molded at one time during injection molding.

[0043] When the number of runner blocks 302 is two groups, two injection molding products 102 can be injection molded simultaneously during injection molding, improving the injection molding efficiency.

[0044] An injection mold for facilitating the removal of the runner gate disclosed in this embodiment further includes a stripper plate 303; multiple groups of runner blocks 302 are fixedly installed on the side wall of the stripper plate 303, and the stripper plate 303 is fixedly installed on the side wall of the mounting plate 301.

[0045] When the runner blocks 302 are designed in multiple groups, to improve the convenience of installation, the runner blocks 302 can be first installed in the corresponding positions of the stripper plate 303, and then the stripper plate 303 can be installed on the side wall of the mounting plate 301 by bolts.

[0046] The stripper plate 303 is located on the side wall of the mounting plate 301 close to the front mold 101.

[0047] After installation, the runners in the injection plate 3, the mounting plate 301, the stripper plate 303, and the runner blocks 302 are interconnected, and then are connected to the runner openings 104 on the front mold 101 through the bottom of the runner blocks 302.

[0048] Through holes 5 are provided on the core-pulling plate 201, as Figure 2 , and the runner blocks 302 pass through the core-pulling plate 201 through the through holes 5 to avoid mutual interference.

[0049] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An injection mold facilitating the removal of a runner gate, comprising a rear mold (1) and a front mold (101), characterized in that, It further includes: an injection molding plate (3) and a core-pulling plate (201); a guide post (2) is fixedly connected to the side wall of the injection molding plate (3), and the core-pulling plate (201) is slidably connected to the guide post (2); a core-pulling member (202) is fixedly connected to the side wall of the core-pulling plate (201), and the core-pulling member (202) penetrates through the front mold (101) to the injection molded product (102); a runner block (302) is arranged on the side wall of the injection molding plate (3), and the core-pulling plate (201) can be attached to the runner port (104) on the front mold (101).

2. The injection mold for facilitating the removal of a runner gate according to claim 1, characterized in that, a mounting plate (301) is fixedly connected to the side wall of the injection molding plate (3), and the runner block (302) is fixedly installed on the side wall of the mounting plate (301).

3. The injection mold according to claim 2, which is convenient for removing the runner gate, is characterized in that, The runner block (302) is designed in multiple groups, and the number of the core-pulling members (202) is the same as that of the runner blocks (302).

4. The injection mold for facilitating the removal of a runner gate according to claim 3, characterized in that, There are two groups of the runner blocks (302).

5. An injection mold facilitating the removal of a runner gate according to claim 3, characterized in that, It further includes a stripper plate (303); multiple groups of the runner blocks (302) are fixedly installed on the side wall of the stripper plate (303), and the stripper plate (303) is fixedly installed on the side wall of the mounting plate (301).

6. An injection mold for facilitating the removal of a runner gate according to claim 1, characterized in that, a through hole (5) is provided on the core-pulling plate (201).

7. An injection mold for facilitating the removal of a runner gate according to claim 1, characterized in that, a cover plate (4) is fixedly installed on the side of the injection molding plate (3) away from the front mold (101).

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