Injection mold

Abstract

The utility model discloses an injection mold, which relates to the technical field of injection molding, and comprises a front mold seat, a rear mold seat is arranged on the lower side of the front mold seat, the front mold seat comprises a fixed seat, the lower side of the fixed seat is fixedly connected with a mold seat I, a vertical pouring gate is arranged in the mold seat I, the lower side of the vertical pouring gate is communicated with a plurality of groups of transverse pouring gates, and the transverse pouring gates are communicated with the fixed seat. The transverse pouring channel is located in the first mold base, a plurality of sets of pouring heads are fixedly connected to the transverse pouring channel, a sprue ring is fixedly connected to the upper side of the fixing base and communicates with the vertical pouring channel, a front pouring cavity is formed in the lower side of the first mold base, the transverse pouring channel communicates with the front pouring cavity through the pouring heads, and a water cooling runner is formed in the first mold base. And the input end and the output end of the water cooling runner penetrate through the left side of the first mold base to communicate with the water cooling pipe, the rear mold base comprises a supporting base, connecting columns are fixedly connected to the four corners of the supporting base, and the sides, away from the supporting base, of the two sets of connecting columns are fixedly connected with a second mold base.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to an injection molding mold. Background Art

[0002] The injection mold consists of two parts: a movable mold and a fixed mold. The movable mold is installed on the movable template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. During injection molding, the movable mold and the fixed mold are closed to form a pouring system and a cavity. When the mold is opened, the movable mold and the fixed mold are separated to take out the plastic product.

[0003] In the existing injection mold, during the injection molding process, when the plastic melt passes through the runner, the plastic melt is generally directly injected after passing through the main runner and the branch runner. In this way, on the one hand, the flow rate of the fluid is very high, and the pressure of the fluid is also relatively large. During the injection molding process, bubbles are generated inside the product, thereby affecting the quality of the product. This phenomenon has become a problem that needs to be urgently solved by people in this field. Utility Model Content

[0004] The purpose of the utility model is to provide an injection mold to solve the problems raised in the above background technology in view of the existing technical defects.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an injection mold, comprising a front mold base, a rear mold base is arranged on the lower side of the front mold base, the front mold base comprises a fixed base, a mold base one is fixedly connected to the lower side of the fixed base, a vertical runner is opened in the mold base one, a plurality of groups of horizontal runners are connected to the lower side of the vertical runner, the horizontal runner is located in the mold base one, and a plurality of groups of pouring heads are fixedly connected to the horizontal runner.

[0006] The utility model further describes that a gate ring is fixedly connected to the upper side of the fixed seat, the gate ring is connected to the vertical runner, a front pouring cavity is opened on the lower side of the mold base, and the horizontal runner is connected to the front pouring cavity through a pouring head;

[0007] A water cooling channel is provided in the mold base one, and an input end and an output end of the water cooling channel penetrate through the left side of the mold base one and are connected to a water cooling pipe.

[0008] The utility model further illustrates that the rear mold base includes a support base, and connecting columns are fixedly connected to the four corners of the support base, and the two groups of connecting columns are fixedly connected to the mold base 2 on one side away from the support base.

[0009] The utility model further illustrates that a rear casting cavity is opened on the upper side of the mold base 2, and the mold base 1 and the mold base 2 are fitted together so that the front casting cavity and the rear casting cavity form an injection cavity.

[0010] The utility model further illustrates that the lower side of the vertical runner is truncated cone-shaped with a smaller diameter, the diameter of the horizontal runner is smaller than the diameter of the vertical runner, and the diameter of the pouring head is much smaller than the diameter of the horizontal runner.

[0011] The utility model further illustrates that four groups of guide columns are fixedly connected to the lower side of the mold base 2, and connecting blocks and top blocks are slidably connected to the four groups of guide columns. The connecting blocks are fixedly connected to the upper side of the top blocks, and springs are sleeved on the four groups of guide columns. The springs are located on the upper side of the connecting blocks, and several groups of ejector pins are fixedly connected to the connecting blocks corresponding to the lower side of the rear casting cavity. The mold base 2 is provided with several groups of through holes corresponding to the several groups of ejector pins, and the through holes are connected to the rear casting cavity.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model divides the fluid injection molding by arranging multiple groups of cross runners and multiple groups of pouring heads on the cross runners, thereby improving the injection molding efficiency;

[0013] By setting the diameter of the end of the vertical runner to a truncated cone shape, by setting the diameter of the horizontal runner to be smaller than the diameter of the vertical runner, and by using multiple groups of pouring heads, the impact force generated by the injection fluid during injection is mitigated, bubbles are prevented from being generated, and the quality of the injection molded product is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the split structure of the rear mold base of the utility model;

[0017] Figure 3 It is a schematic diagram of the vertical pouring channel structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the left front side top view of the rear mold base split structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the left front side upward view of the rear mold base split structure of the utility model;

[0020] In the figure: 1. front mold base; 2. rear mold base; 3. fixed base; 4. mold base one; 5. gate ring; 6. vertical runner; 7. horizontal runner; 8. pouring head; 9. water-cooling runner; 10. connecting column; 11. mold base two; 12. rear pouring cavity; 13. front pouring cavity; 14. guide column; 15. connecting block; 16. ejector block; 17. spring; 18. ejector pin; 19. through hole; 20. support base. DETAILED DESCRIPTION

[0021] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 The utility model provides a technical solution: an injection mold, comprising a front mold base 1, and a rear mold base 2 is arranged at the lower side of the front mold base 1.

[0023] The front mold base 1 includes a fixed base 3, a mold base 4 is fixedly connected to the lower side of the fixed base 3, a gate ring 5 is fixedly connected to the upper side of the fixed base 3, a vertical runner 6 is opened in the mold base 4, the gate ring 5 is connected to the vertical runner 6, the lower side of the vertical runner 6 is connected to a plurality of groups of horizontal runners 7, the horizontal runners 7 are located in the mold base 4, a plurality of groups of pouring heads 8 are fixedly connected to the horizontal runners 7, a front pouring cavity 13 is opened at the lower side of the mold base 4, and the horizontal runners 7 are connected to the front pouring cavity 13 through the pouring heads 8;

[0024] A water cooling channel 9 is provided in the mold base 4, and the input end and the output end of the water cooling channel 9 pass through the left side of the mold base 4 and are connected to the water cooling pipe, so as to accelerate the cooling of the product after injection molding.

[0025] The rear mold base 2 includes a support base 20, and the four corners of the support base 20 are fixedly connected with connecting columns 10, and the two sets of connecting columns 10 are fixedly connected with the mold base 2 11 on the side away from the support base. The upper side of the mold base 2 11 is provided with a rear casting cavity 12, and the mold base 1 4 is fitted with the mold base 2 11, so that the front casting cavity 13 and the rear casting cavity 12 form an injection cavity;

[0026] The lower side of the vertical runner 6 is truncated cone-shaped with a smaller diameter. The diameter of the horizontal runner 7 is smaller than that of the vertical runner 6. The diameter of the pouring head 8 is much smaller than that of the horizontal runner 7. This buffers the pressure of the fluid during the injection molding process, reduces the impact force generated after the fluid enters the injection molding cavity, and causes bubbles to be generated.

[0027] Four groups of guide columns 14 are fixedly connected to the lower side of the mold base 11, and connecting blocks 15 and ejector blocks 16 are slidably connected to the four groups of guide columns 14. The connecting blocks 15 are fixedly connected to the upper side of the ejector blocks 16. Springs 17 are sleeved on the four groups of guide columns 14, and the springs 17 are located on the upper side of the connecting blocks 15. A number of groups of ejector pins 18 are fixedly connected to the connecting blocks 15 corresponding to the lower side of the rear casting cavity 12. The mold base 11 is provided with a number of through holes 19 corresponding to the number of groups of ejector pins 18. The through holes 19 are connected to the rear casting cavity 12, and are used to eject the molded product out of the injection cavity through the through holes 19.

[0028] In this embodiment, the injection fluid enters the vertical runner 6 through the gate ring 5, and is respectively directed to a plurality of groups of horizontal runners 7 at the output end of the vertical runner 6, and is divided and injected into the injection cavity through the pouring head 8, thereby improving the injection efficiency and reducing the impact of the injection fluid on the injection cavity, thereby preventing the generation of bubbles;

[0029] After the injection molding in the injection molding cavity is completed, the product in the injection molding cavity is cooled down through the water-cooling runner 9. After the cooling is completed, the front mold base 1 is controlled to move to the side away from the rear mold base 2, and the ejector block 16 on the rear mold base 2 is controlled to press toward the side of the front mold base 1, so that the ejector pin 18 is pushed into the injection molding cavity, and the product after the cooling is completed is ejected from the injection molding cavity. Subsequently, the front mold base 1 and the rear mold base 2 are controlled to fit together again for the next injection molding.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An injection mold, comprising a front mold base (1), characterized in that: A rear mold base (2) is arranged at the lower side of the front mold base (1); the front mold base (1) comprises a fixed base (3); a mold base one (4) is fixedly connected to the lower side of the fixed base (3); a vertical runner (6) is provided in the mold base one (4); a plurality of groups of horizontal runners (7) are connected to the lower side of the vertical runner (6); the horizontal runners (7) are located in the mold base one (4); and a plurality of groups of pouring heads (8) are fixedly connected to the horizontal runners (7).

2. An injection mold according to claim 1, characterized in that: A gate ring (5) is fixedly connected to the upper side of the fixed seat (3), and the gate ring (5) is connected to the vertical pouring channel (6). A front pouring cavity (13) is opened on the lower side of the mold base (4), and the horizontal pouring channel (7) is connected to the front pouring cavity (13) through a pouring head (8); A water cooling channel (9) is provided in the mold base (4), and the input end and the output end of the water cooling channel (9) pass through the left side of the mold base (4) and are connected to the water cooling pipe.

3. An injection mold according to claim 2, characterized in that: The rear mold base (2) comprises a support base (20), the four corners of which are fixedly connected with connecting columns (10), and two groups of connecting columns (10) are fixedly connected with a mold base 2 (11) on a side away from the support base.

4. An injection mold according to claim 3, characterized in that: A rear casting cavity (12) is provided on the upper side of the mold base 2 (11), and the mold base 1 (4) fits with the mold base 2 (11) so that the front casting cavity (13) and the rear casting cavity (12) form an injection molding cavity.

5. An injection mold according to claim 4, characterized in that: The lower side of the vertical runner (6) is truncated cone-shaped with a smaller diameter, the diameter of the horizontal runner (7) is smaller than the diameter of the vertical runner (6), and the diameter of the pouring head (8) is much smaller than the diameter of the horizontal runner (7).

6. An injection mold according to claim 5, characterized in that: Four groups of guide columns (14) are fixedly connected to the lower side of the mold base 2 (11); connecting blocks (15) and top blocks (16) are slidably connected to the four groups of guide columns (14); the connecting blocks (15) are fixedly connected to the upper side of the top blocks (16); springs (17) are sleeved on the four groups of guide columns (14); the springs (17) are located on the upper side of the connecting blocks (15); a plurality of groups of ejector pins (18) are fixedly connected to the connecting blocks (15) corresponding to the lower side of the post-casting cavity (12); the mold base 2 (11) is provided with a plurality of through holes (19) corresponding to the plurality of ejector pins (18); the through holes (19) are connected to the post-casting cavity (12).

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