Injection mold of light guide column

Abstract

The utility model discloses an injection mold of a light guide column, which relates to the technical field of molds, and comprises an upper mold and a lower mold, the upper mold is provided with an upper mold core, the lower mold is provided with a lower mold core, and the upper mold and the lower mold are matched in a butt joint manner, so that the upper mold core and the lower mold core are in butt joint to form a cavity for forming a product; the mold cavity comprises a first forming area corresponding to a first injection product and a second forming area corresponding to a second injection product, a first forming insert is embedded in the lower mold core, a second forming insert is embedded in the upper mold core, the first forming insert is provided with a first product profiling groove, the second forming insert is provided with a second product profiling groove, and the first product profiling groove and the second product profiling groove are matched with each other. The first forming insert and the second forming insert are in butt joint and matched, so that the first product profiling groove and the second product profiling groove are in butt joint to form the first forming area, and the matching surface of the first forming insert and the second forming insert is a plane; and the first molding area of the first injection product and the second molding area of the second injection product are effectively separated from each other.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection mold for a light guide column. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping and other methods. In short, molds are tools used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the surface processing of objects by changing the physical state of the molded material, and is known as the "mother of industry". Injection molds are tools for producing plastic products. Generally, injection molds are composed of an upper mold and a lower mold. During injection molding, the upper mold and the lower mold are closed to form a runner system and a cavity for plastic products. During injection molding, the mold is clamped on the injection molding machine, and the molten plastic is injected into the cavity and cooled and formed in the cavity. At the same time, the molten plastic is also cooled in the runner system to form a runner system condensate. After the plastic product is formed, the upper mold and the lower mold are separated, and the plastic product is ejected from the cavity and leaves the mold through the ejection system. Finally, the upper mold and the lower mold are closed again for the next injection molding. The entire injection molding process is carried out in a cycle.

[0003] Two-color injection molding uses a double-barrel injection molding machine to complete the two molding of the product by rotating the movable mold 180°, thereby obtaining a two-color product with two materials. It can be seen that the movable mold part has exactly the same mold structure, while the injection molding of the two-shot material is completed by the differential mold structure of the fixed mold part.

[0004] like Figure 1 As shown, a two-color guide column plastic product includes a one-shot product and a two-shot product, such as Figure 2 As shown, a first mold corresponding to a one-shot product and a second mold corresponding to a two-shot product are correspondingly provided. In the first mold, the cavity has a molding area corresponding to the one-shot product and a molding area corresponding to the two-shot product. During the molding process of the one-shot product, the molding area of ​​the one-shot product and the molding area of ​​the two-shot product need to be separated from each other. In the prior art, the molding area of ​​the one-shot product and the molding area of ​​the two-shot product are generally separated from each other by cooperating with the parting surfaces of the upper mold core and the lower mold core, so that the parting surface of the upper mold core not only needs to match the molding shape of the one-shot product, but also needs to match the molding shape of the two-shot product and close the molding area of ​​the two-shot product, which leads to a complex design structure of the upper mold core, which is not conducive to cost.

[0005] Therefore, it is necessary to propose an improved technical solution to solve the above problems. Utility Model Content

[0006] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0007] An injection mold for a light guide column, comprising an upper mold and a lower mold, wherein the upper mold has an upper mold core, and the lower mold has a lower mold core, and the upper mold and the lower mold are butt-jointed to form a cavity for molding a product;

[0008] The mold cavity includes a first molding area corresponding to a one-shot product and a second molding area corresponding to a two-shot product, the lower mold core is embedded with a first molding insert, the upper mold core is embedded with a second molding insert, the first molding insert is provided with a first product profiling groove, the second molding insert is provided with a second product profiling groove, the first molding insert and the second molding insert are butt-jointed to form the first molding area by butting the first product profiling groove and the second product profiling groove, wherein the mating surface of the first molding insert and the second molding insert is a plane;

[0009] An injection channel is arranged on the upper mold, and the injection channel includes a main channel, a primary channel arranged on the upper mold core, and a secondary channel arranged on the second molding insert. The main channel, the primary channel and the secondary channel are connected in sequence and connected to the second product profiling groove through the secondary channel.

[0010] As a further solution of the utility model: one end of the first molding insert that cooperates with the second molding insert forms a first cooperation end, and one end of the second molding insert that cooperates with the first molding insert forms a second cooperation end;

[0011] The first mating end includes a first abutting portion and the first product profiling groove opened at a substantially central position of the first abutting portion, and the second mating end includes a second abutting portion and the second product profiling groove opened at a substantially central position of the second abutting portion, wherein the mating surfaces of the first abutting portion and the second abutting portion are planes.

[0012] As a further solution of the utility model: the upper mold core is provided with a first mounting groove, the second molding insert can be slidably engaged in the first mounting groove, a step portion is formed at the slot position of the first mounting groove, and a limiting portion is convexly provided on one side of the second molding insert, and the limiting portion is in limiting abutment engagement with the step portion.

[0013] As a further solution of the utility model: the upper mold core is further provided with a second mounting groove, and the second mounting groove is connected with the first mounting groove;

[0014] The upper mold core is fixedly provided with a limiting plate at the second installation groove, and the limiting plate cooperates with the second molding insert to limit the second molding insert in the first installation groove.

[0015] As a further solution of the utility model: the primary flow channel is formed on the limiting plate, and the secondary flow channel is formed on the limiting plate and the second molding insert.

[0016] As a further solution of the utility model: a third molding insert is embedded on the second molding insert and docked with the second product profiling groove, and a product profiling structure is provided at one end of the third molding insert docked with the second product profiling groove.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] 1) By providing a first molding insert corresponding to the position of the cavity on the lower mold core and a second molding insert corresponding to the position of the cavity on the upper mold core, and providing a first product profiling groove on the upper end of the first molding insert and providing a second product profiling groove on the lower end of the second molding insert, the upper mold core and the lower mold core are butted together, and the first product profiling groove and the second product profiling groove are butted together to form a specific cavity, i.e., a first molding area corresponding to a one-shot product, thereby effectively separating the second molding area corresponding to a two-shot product in the cavity, and thus eliminating the need to distinguish the first molding area from the second molding area by designing a parting surface structure of the upper mold core, thereby facilitating the design of the upper mold core and saving costs;

[0019] 2) By sequentially connecting the main runner, the primary runner and the secondary runner, especially by setting the secondary runner on the second molding insert, the plastic melt can enter the second product profiling groove and the first product profiling groove, i.e., the first molding area, along the main runner, the primary runner and the secondary runner, ensuring that the plastic melt does not enter the wrong area and ensuring the molding of the one-shot product.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a schematic diagram of the product structure;

[0023] Figure 2 It is a structural diagram of a two-color mold;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0025] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 5 It is a schematic diagram of the structure of the upper mold core, the limit plate and the injection runner in the utility model;

[0027] Figure 6 It is a schematic diagram of the structure of the second molding insert and the upper mold core in the utility model;

[0028] Figure 7 It is a schematic diagram of the structure in which the first molding insert and the second molding insert cooperate on the lower mold core in the utility model;

[0029] Figure 8 It is a schematic diagram of the structure of the first molding insert and the second molding insert in the utility model;

[0030] Fig. 9 It is a structural schematic diagram of the upper mold core in the utility model.

[0031] The reference numerals and names in the figures are as follows:

[0032] 1. Upper mold core; 2. Lower mold core; 3. Cavity; 4. First molding area; 5. Second molding area; 6. First molding insert; 7. Second molding insert; 8. First product profiling groove; 9. Second product profiling groove; 10. Injection runner; 11. Main runner; 12. Primary runner; 13. Secondary runner; 14. First mating end; 15. Second mating end; 16. First abutting portion; 17. Second abutting portion; 18. First mounting groove; 19. Step portion; 20. Limiting portion; 21. Second mounting groove; 22. Limiting plate; 23. Third molding insert; 24. One-shot product; 25. Two-shot product; 26. First mold; 27. Second mold. DETAILED DESCRIPTION

[0033] 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.

[0034] See also Figure 1-9 In an embodiment of the utility model, an injection mold for a light guide column includes an upper mold and a lower mold, wherein the upper mold has an upper mold core 1, and the lower mold has a lower mold core 2, and the upper mold and the lower mold are butt-jointed to form a cavity 3 for molding a product;

[0035] The mold cavity 3 includes a first molding area 4 corresponding to a first-shot product 24 and a second molding area 5 corresponding to a second-shot product 25, the lower mold core 2 is embedded with a first molding insert 6, the upper mold core 1 is embedded with a second molding insert 7, the first molding insert 6 is provided with a first product profiling groove 8, the second molding insert 7 is provided with a second product profiling groove 9, the first molding insert 6 and the second molding insert 7 are butt-jointed to form the first molding area 4 by butting the first product profiling groove 8 and the second product profiling groove 9, wherein the mating surface of the first molding insert 6 and the second molding insert 7 is a plane;

[0036] An injection channel 10 is provided on the upper mold, and the injection channel 10 includes a main channel 11, a primary channel 12 provided on the upper mold core 1, and a secondary channel 13 provided on the second molding insert 7. The main channel 11, the primary channel 12 and the secondary channel 13 are connected in sequence and connected to the second product profiling groove 9 through the secondary channel 13.

[0037] In the technical solution of the utility model, by providing a first molding insert 6 corresponding to the position of the cavity 3 on the lower mold core 2 and a second molding insert 7 corresponding to the position of the cavity 3 on the upper mold core 1, and providing a first product profiling groove 8 on the upper end of the first molding insert 6 and providing a second product profiling groove 9 on the lower end of the second molding insert 7, the upper mold core 1 and the lower mold core 2 are connected, and the first molding insert 6 and the second molding insert 7 are connected to form a specific cavity, that is, the first molding area 4 corresponding to the first shot product 24, so as to effectively separate the second molding area 5 corresponding to the second shot product 25 in the cavity 3, and then there is no need to distinguish the first molding area 4 and the second molding area 5 by designing the parting surface structure of the upper mold core 1, so as to facilitate the design of the upper mold core 1 and save costs;

[0038] And by sequentially connecting the main flow channel 11, the primary flow channel 12 and the secondary flow channel 13, especially the secondary flow channel 13 is arranged on the second molding insert 7, the plastic melt can enter the second product profiling groove 9 and the first product profiling groove 8, that is, the first molding area 4, along the main flow channel 11, the primary flow channel 12 and the secondary flow channel 13, ensuring that the plastic melt will not enter the wrong area, thereby ensuring the molding of the one-shot product 24.

[0039] In the embodiment of the utility model, one end of the first molding insert 6 and the second molding insert 7 that cooperate with each other forms a first cooperation end 14, and one end of the second molding insert 7 and the first molding insert 6 that cooperate with each other forms a second cooperation end 15;

[0040] The first mating end 14 includes a first abutting portion 16 and the first product profiling groove 8 opened at a substantially central position of the first abutting portion 16, and the second mating end 15 includes a second abutting portion 17 and the second product profiling groove 9 opened at a substantially central position of the second abutting portion 17, wherein the mating surfaces of the first abutting portion 16 and the second abutting portion 17 are planes.

[0041] By designing that the mating surfaces of the first molding insert 6 and the second molding insert 7 are planar, specifically, the mating surfaces of the first abutting portion 16 and the second abutting portion 17 are planar, the sealing of the docking of the first molding insert 6 and the second molding insert 7 is effectively guaranteed through the planar docking, that is, it is beneficial to the sealing of the first molding area 4, ensuring that during one shot, the first molding area 4 of the first-shot product 24 and the second molding area 5 of the second-shot product 25 can be separated from each other.

[0042] In the embodiment of the utility model, the upper mold core 1 is provided with a first mounting groove 18, the second molding insert 7 can be slidably engaged in the first mounting groove 18, a step portion 19 is formed at the notch position of the first mounting groove 18, and a limiting portion 20 is convexly provided on one side of the second molding insert 7, and the limiting portion 20 is limitedly abutted and matched with the step portion 19;

[0043] The upper mold core 1 is further provided with a second mounting groove 21, and the second mounting groove 21 is connected to the first mounting groove 18;

[0044] The upper mold core 1 is fixedly provided with a limiting plate 22 at the second installation groove 21 , and the limiting plate 22 cooperates with the second molding insert 7 to limit the second molding insert 7 in the first installation groove 18 .

[0045] A first mounting groove 18 matched with the shape and size of the second molding insert 7 is provided on the upper mold core 1, and the second molding insert 7 can be in a specified position in the first mounting groove 18 through the abutment and limitation of the step portion 19 and the limiting portion 20, and the upper end of the second molding insert 7 is abutted by the limiting plate 22 to prevent the second molding insert 7 from withdrawing from the first mounting groove 18, thereby ensuring the fixation of the second molding insert 7 and the guarantee of the molding accuracy of the first molding area 4 for the one-shot product 24.

[0046] In the embodiment of the utility model, the primary flow channel 12 is formed on the limiting plate 22 , and the secondary flow channel 13 is formed on the limiting plate 22 and the second molding insert 7 .

[0047] The limiting plate 22 can not only limit and fix the second molding insert 7, but also play a flow channel diversion role similar to a diverter plate.

[0048] In the embodiment of the utility model, a third molding insert 23 that is connected to the second product profiling groove 9 is embedded on the second molding insert 7, and a product profiling structure is provided at one end of the third molding insert 23 that is connected to the second product profiling groove 9.

[0049] According to the technical features of the one-shot product 24, a third molding insert 23 that docks with the second product profiling groove 9 can be embedded in the second molding insert 7 to facilitate molding of the one-shot product 24.

[0050] The fixing method of the third molding insert 23 may be the same as the fixing method of the second molding insert 7 .

[0051] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. An injection mold for a light guide column, characterized in that: It comprises an upper mold and a lower mold, wherein the upper mold has an upper mold core, and the lower mold has a lower mold core, and the upper mold and the lower mold are butted together to form a cavity for molding a product; The mold cavity includes a first molding area corresponding to a one-shot product and a second molding area corresponding to a two-shot product, the lower mold core is embedded with a first molding insert, the upper mold core is embedded with a second molding insert, the first molding insert is provided with a first product profiling groove, the second molding insert is provided with a second product profiling groove, the first molding insert and the second molding insert are butt-jointed to form the first molding area by butting the first product profiling groove and the second product profiling groove, wherein the mating surface of the first molding insert and the second molding insert is a plane; An injection channel is arranged on the upper mold, and the injection channel includes a main channel, a primary channel arranged on the upper mold core, and a secondary channel arranged on the second molding insert. The main channel, the primary channel and the secondary channel are connected in sequence and connected to the second product profiling groove through the secondary channel.

2. The injection mold of the light guide column according to claim 1, characterized in that: One end of the first molding insert that matches with the second molding insert forms a first matching end, and one end of the second molding insert that matches with the first molding insert forms a second matching end; The first mating end includes a first abutting portion and the first product profiling groove opened at a substantially central position of the first abutting portion, and the second mating end includes a second abutting portion and the second product profiling groove opened at a substantially central position of the second abutting portion, wherein the mating surfaces of the first abutting portion and the second abutting portion are planes.

3. The injection mold of the light guide column according to claim 1, characterized in that: The upper mold core is provided with a first mounting groove, and the second molding insert can be slidably engaged in the first mounting groove. A step portion is formed at the slot position of the first mounting groove, and a limiting portion is convexly provided on one side of the second molding insert, and the limiting portion is in limiting abutment with the step portion.

4. The injection mold of the light guide column according to claim 3, characterized in that: The upper mold core is also provided with a second mounting groove, and the second mounting groove is connected with the first mounting groove; The upper mold core is fixedly provided with a limiting plate at the second installation groove, and the limiting plate cooperates with the second molding insert to limit the second molding insert in the first installation groove.

5. The injection mold of the light guide column according to claim 4, characterized in that: The primary flow channel is formed on the limiting plate, and the secondary flow channel is formed on the limiting plate and the second molding insert.

6. The injection mold of a light guide column according to claim 1 or 4, characterized in that: The second molding insert is embedded with a third molding insert that is docked with the second product profiling groove, and one end of the third molding insert that is docked with the second product profiling groove is provided with a product profiling structure.

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