Double-color injection molding mold

Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to a double-color injection molding mold which comprises a first mold and a second mold arranged on the left side of the first mold, and further comprises an oil injection assembly arranged on the upper surface of the first mold, the oil injection assembly comprises a placement block fixedly connected to the upper surface of the first mold and a placement groove formed in the upper surface of the placement block; through cooperation of a second sealing plate and a linkage rod in the oil injection assembly, air in an oil passing groove can be driven through a compression hole, so that a first sealing plate and a third sealing plate slide to drive and separate for entering and discharging, and through cooperation of a supporting rod and a spring piece in the auxiliary assembly, the oil injection assembly can be conveniently assembled. The characteristic that manual oil injection is not needed is achieved through the force of the second mold.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and in particular relates to a double-color injection molding mold. Background Art

[0002] Two-color injection molding refers to the process of injecting two different materials into the same mold, so that the molded parts are formed by two materials. For many plastic products, the assembly of the product requires another layer of soft glue in the hard plastic. The shape of the soft glue can be various, which requires the application of the two-color injection molding process;

[0003] After checking the public (announcement) number: CN213704355U discloses a two-color injection molding mold for automobile headlights. This technology discloses "including a first mold and a second mold, each of the first mold and the second mold is provided with a pair, the two first molds are symmetrical with the two second molds, and a bearing is fixedly installed between the two first molds. When the mold is closed, the two ends of the buffer rod enter the movable groove in the bearing and the fixed plate, and the spring is used for buffering to improve the stability when the mold is closed. The overall structure is reasonable and the practicality is high. Technical effects";

[0004] Although the design uses spring buffering to improve the stability of mold closing, has a reasonable overall structure, and has high practicality, the molded product is easy to adhere to the inner wall of the mold, and it is inconvenient for the user to take the molded product out of the mold, which affects the practicality of the two-color injection molding mold;

[0005] Therefore, a two-color injection molding mold is designed to solve the above problems. Utility Model Content

[0006] To solve the problems raised in the above background technology. The utility model provides a two-color injection molding mold, which can utilize the cooperation of the second sealing plate and the linkage rod in the oil injection assembly to drive the air inside the oil tank through the compression hole, so that the first sealing plate and the third sealing plate can slide and drive the separation to enter and discharge, and can also utilize the cooperation of the support rod and the spring sheet in the auxiliary assembly to borrow the force of the second mold to achieve the feature of no manual oil injection.

[0007] To achieve the above object, the utility model provides the following technical solution: a two-color injection molding mold, comprising a first mold and a second mold arranged on the left side of the first mold, and also comprising an oil spray assembly arranged on the upper surface of the first mold;

[0008] The oil injection assembly includes a placement block fixedly connected to the upper surface of the first mold and a placement groove opened on the upper surface of the placement block, an oil storage box is arranged inside the placement groove, the oil storage box is fixedly connected to the placement block, and an oil inlet pipe is fixedly connected to the upper surface of the oil storage box.

[0009] As a preferred double-color injection molding mold of the utility model, a fixed block is fixedly connected to the upper surface of the oil storage box, the fixed block is located on the left side of the oil inlet pipe, an oil passing groove is opened inside the fixed block, a first sealing plate is inserted inside the oil passing groove, the first sealing plate and the fixed block are slidably connected, a first spring is installed inside the oil passing groove, and the two ends of the first spring are fixedly connected to the fixed block and the first sealing plate respectively.

[0010] As a preferred double-color injection molding mold of the utility model, two oil inlets are symmetrically opened inside the fixed block, a compression hole is opened inside the fixed block, a second sealing plate is inserted inside the compression hole, the second sealing plate and the fixed block are slidably connected, a third spring is installed inside the compression hole, the two ends of the third spring are respectively fixedly connected to the second sealing plate and the fixed block, and a linkage rod is fixedly connected to the left surface of the second sealing plate.

[0011] As a preferred double-color injection molding mold of the utility model, an oil injection hole is opened inside the fixed block, a third sealing plate is inserted inside the oil injection hole, the third sealing plate and the fixed block are slidably connected, a second spring is installed inside the oil injection hole, and both ends of the second spring are fixedly connected to the fixed block and the third sealing plate respectively.

[0012] As a preferred double-color injection molding mold of the utility model, it also includes an auxiliary component arranged on the upper surface of the second mold;

[0013] The auxiliary component includes a sliding groove opened on the upper surface of the second mold, a support rod is inserted into the sliding groove, the support rod is slidably connected to the second mold, one end of the support rod away from the second mold is fixedly connected to the linkage rod, and a spring sheet is arranged inside the sliding groove, and the spring sheet is fixedly connected to the second mold.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: an oil injection assembly is added to the present application, and the cooperation of the second sealing plate and the linkage rod in the oil injection assembly can be utilized to drive the air inside the oil tank through the compression hole, so that the first sealing plate and the third sealing plate slide and drive the separation to enter and discharge. At the same time, an auxiliary assembly is added, and the cooperation of the support rod and the spring sheet in the auxiliary assembly can be utilized to borrow the force of the second mold to achieve the characteristic of no need for manual oil injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional view in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the support rod and the linkage rod in the utility model;

[0019] Figure 4 For this utility model Figure 2 The enlarged view of point A in the middle;

[0020] In the figure:

[0021] 1. The first mold;

[0022] 2. Oil injection assembly; 21. Placement block; 22. Placement slot; 23. Oil storage box; 24. Oil inlet pipe; 25. Fixing block; 26. Oil trough; 27. Oil inlet; 28. First sealing plate; 29. ​​First spring; 210. Linkage rod; 211. Second spring; 212. Second sealing plate; 213. Compression hole; 214. Third spring; 215. Oil injection hole; 216. Third sealing plate;

[0023] 3. Auxiliary components; 31. Support rod; 32. Sliding groove; 33. Spring sheet;

[0024] 4. The second mold. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0026] Example 1

[0027] like Figure 2 As shown;

[0028] A two-color injection molding mold comprises a first mold 1 and a second mold 4 arranged on the left side of the first mold 1.

[0029] In this embodiment: after investigation, the public (announcement) number CN213704355U discloses a two-color injection molding mold for automobile headlights. Although the design uses spring buffering to improve the stability during mold closing, the overall structure is reasonable, and the practicality is high. However, the molded product is easy to adhere to the inner wall of the mold, and it is inconvenient for the user to take the molded product out of the mold, which affects the practicality of the two-color injection molding mold; in order to solve this technical problem, an injection component 2 and an auxiliary component 3 are added on this basis.

[0030] It should be noted that the first mold 1 is composed of a bearing, a fixed plate, a reinforcement stabilization mechanism, a mounting ring, a fixed rod, a buffer rod and a limit block in the disclosure (announcement) number: CN213704355U. The use principle of the first mold 1 refers to the disclosure (announcement) number: CN213704355U, which will not be repeated here.

[0031] More specifically:

[0032] like Figures 1 to 4 As shown:

[0033] In combination with the above content: the oil injection assembly 2 includes a placement block 21 fixedly connected to the upper surface of the first mold 1 and a placement groove 22 opened on the upper surface of the placement block 21, an oil storage box 23 is arranged inside the placement groove 22, the oil storage box 23 and the placement block 21 are fixedly connected, an oil inlet pipe 24 is fixedly connected to the upper surface of the oil storage box 23, a fixed block 25 is fixedly connected to the upper surface of the oil storage box 23, the fixed block 25 is located on the left side of the oil inlet pipe 24, an oil passing groove 26 is opened inside the fixed block 25, a first sealing plate 28 is inserted inside the oil passing groove 26, the first sealing plate 28 and the fixed block 25 are slidably connected, a first spring 29 is installed inside the oil passing groove 26, and the two ends of the first spring 29 are respectively fixedly connected to the fixed block 25 and the first sealing plate 28.

[0034] In the present embodiment: separation oil is poured into the interior of the oil storage box 23 from the oil inlet pipe 24, the second sealing plate 212 moves, and the first sealing plate 28 inserted in the oil groove 26 will slide inside the oil groove 26 due to the second sealing plate 212 stretching the air inside the oil groove 26. The separation oil inside the oil storage box 23 enters the interior of the oil groove 26 from the inside of the oil inlet 27.

[0035] It should be noted that the fixed block 25 is composed of two rectangular structures, one end of which is obliquely opposite to the second mold 4 to facilitate oil spraying to the second mold 4 , and an oil pipe is inserted into the oil storage box 23 and communicated with the oil groove 26 .

[0036] Going further:

[0037] In an optional embodiment, two oil inlets 27 are symmetrically opened inside the fixed block 25, a compression hole 213 is opened inside the fixed block 25, a second sealing plate 212 is inserted inside the compression hole 213, the second sealing plate 212 and the fixed block 25 are slidingly connected, a third spring 214 is installed inside the compression hole 213, the two ends of the third spring 214 are respectively fixedly connected to the second sealing plate 212 and the fixed block 25, and the left surface of the second sealing plate 212 is fixedly connected to a linkage rod 210.

[0038] In this embodiment: when the second mold 4 and the first mold 1 are used for mold separation, the second mold 4 will move away from the first mold 1, and the support rod 31 will pull the second sealing plate 212 to slide inside the compression hole 213 through the linkage rod 210, and the third spring 214 installed inside the compression hole 213 will be stretched.

[0039] It should be noted that the compression hole 213 is composed of three rectangular structures, which is convenient for fixing the third spring 214. The three sealing plates connecting the compression hole 213 and the oil groove 26 are all made of rubber material, which has stronger sealing performance.

[0040] Going further:

[0041] In an optional embodiment, an oil injection hole 215 is opened inside the fixed block 25, a third sealing plate 216 is inserted inside the oil injection hole 215, the third sealing plate 216 and the fixed block 25 are slidably connected, a second spring 211 is installed inside the oil injection hole 215, and both ends of the second spring 211 are fixedly connected to the fixed block 25 and the third sealing plate 216 respectively.

[0042] In this embodiment: the second sealing plate 212 slides in the compression hole 213, the third spring 214 will be compressed, the first sealing plate 28 will block the oil inlet 27, and the third sealing plate 216 inserted in the oil injection hole 215 will slide in the oil injection hole 215 due to the air in the oil groove 26 being compressed, the second spring 211 installed in the oil injection hole 215 will be compressed, and the separation oil entering the oil groove 26 will be sprayed from the oil injection hole 215 onto the mating surface of the second mold 4, so that the plastic mold will not be stuck to the mold when it is taken out.

[0043] It should be noted that: when the second sealing plate 212 stretches the third spring 214, the first sealing plate 28 will slide upward inside the oil groove 26, and the separation oil will enter the interior of the oil groove 26 through the oil inlet 27 via the oil pipe inserted in the oil storage box 23. When the second sealing plate 212 compresses the third spring 214, the first sealing plate 28 will descend faster than the separation oil. Although some separation oil will flow back, it will not affect. Then, the third sealing plate 216 will be compressed by the separation oil inside the oil groove 26, and the second spring 211 will be compressed, and the separation oil will be sprayed out from the oil injection hole 215.

[0044] Going further:

[0045] In an optional embodiment, the auxiliary component 3 includes a sliding groove 32 opened on the upper surface of the second mold 4, a support rod 31 is inserted into the sliding groove 32, the support rod 31 is slidably connected to the second mold 4, and the end of the support rod 31 away from the second mold 4 is fixedly connected to the linkage rod 210, and a spring sheet 33 is arranged inside the sliding groove 32, and the spring sheet 33 is fixedly connected to the second mold 4.

[0046] In this embodiment: when closing the mold, the second mold 4 slides toward the first mold 1, and the support rod 31 slides inside the sliding groove 32 until it hits the spring sheet 33. The support rod 31 causes the second sealing plate 212 to slide in the compression hole 213 through the linkage rod 210.

[0047] It should be noted that when the support rod 31 makes the second sealing plate 212 slide to the top inside the compression hole 213 , the spring sheet 33 will slide across the spring sheet 33 due to the elastic potential energy of the support rod 31 .

[0048] Working principle: Pour separation oil from the oil inlet pipe 24 into the oil storage box 23. When the second mold 4 and the first mold 1 are used for mold separation, the second mold 4 will move away from the first mold 1, and the support rod 31 will pull the second sealing plate 212 through the linkage rod 210 to slide inside the compression hole 213. The third spring 214 installed inside the compression hole 213 will be stretched, and the first sealing plate 28 inserted in the oil groove 26 will slide inside the oil groove 26 due to the air inside the oil groove 26 stretched by the second sealing plate 212. The separation oil inside the oil storage box 23 enters the oil groove 26 from the inside of the oil inlet 27. Then, when the mold is closed, the second mold 4 slides in the direction of the first mold 1, the support rod 31 will slide inside the sliding groove 32 until it hits the spring sheet 33, the support rod 31 will make the second sealing plate 212 slide in the compression hole 213 through the linkage rod 210, the third spring 214 will be compressed, the first sealing plate 28 will block the oil inlet 27, the third sealing plate 216 inserted in the oil injection hole 215 slides inside the oil injection hole 215 due to the air inside the oil groove 26 being compressed, the second spring 211 installed in the oil injection hole 215 will be compressed, and the separation oil entering the oil groove 26 will be sprayed from the oil injection hole 215 to the mating surface of the second mold 4, so that the mold will not be stuck to the mold when it is taken out.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A two-color injection molding mold, comprising a first mold (1) and a second mold (4) arranged on the left side of the first mold (1), characterized in that: It also includes an oil spray assembly (2) arranged on the upper surface of the first mold (1); The oil injection assembly (2) comprises a placement block (21) fixedly connected to the upper surface of the first mold (1) and a placement groove (22) opened on the upper surface of the placement block (21); an oil storage box (23) is arranged inside the placement groove (22); the oil storage box (23) is fixedly connected to the placement block (21); and an oil inlet pipe (24) is fixedly connected to the upper surface of the oil storage box (23).

2. A two-color injection molding mold according to claim 1, characterized in that: A fixing block (25) is fixedly connected to the upper surface of the oil storage box (23). The fixing block (25) is located on the left side of the oil inlet pipe (24). An oil passage groove (26) is provided inside the fixing block (25). A first sealing plate (28) is inserted inside the oil passage groove (26). The first sealing plate (28) and the fixing block (25) are slidably connected. A first spring (29) is installed inside the oil passage groove (26). Two ends of the first spring (29) are fixedly connected to the fixing block (25) and the first sealing plate (28), respectively.

3. A two-color injection molding mold according to claim 2, characterized in that: Two oil inlets (27) are symmetrically provided inside the fixed block (25), a compression hole (213) is provided inside the fixed block (25), a second sealing plate (212) is inserted inside the compression hole (213), the second sealing plate (212) and the fixed block (25) are slidably connected, a third spring (214) is installed inside the compression hole (213), two ends of the third spring (214) are respectively fixedly connected to the second sealing plate (212) and the fixed block (25), and a linkage rod (210) is fixedly connected to the left surface of the second sealing plate (212).

4. A two-color injection molding mold according to claim 3, characterized in that: An oil injection hole (215) is provided inside the fixed block (25), a third sealing plate (216) is inserted inside the oil injection hole (215), the third sealing plate (216) and the fixed block (25) are slidably connected, a second spring (211) is installed inside the oil injection hole (215), and two ends of the second spring (211) are fixedly connected to the fixed block (25) and the third sealing plate (216), respectively.

5. A two-color injection molding mold according to claim 4, characterized in that: It also includes an auxiliary component (3) arranged on the upper surface of the second mold (4); The auxiliary component (3) comprises a sliding groove (32) formed on the upper surface of the second mold (4); a support rod (31) is inserted into the interior of the sliding groove (32); the support rod (31) is slidably connected to the second mold (4); one end of the support rod (31) away from the second mold (4) is fixedly connected to a linkage rod (210); a spring sheet (33) is provided inside the sliding groove (32); and the spring sheet (33) is fixedly connected to the second mold (4).

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