Hardware forming die for embedding ignition coil high-voltage bar into

Abstract

The utility model discloses an ignition coil high-voltage bar embedded hardware forming die which comprises an upper die and a lower die, an inner cavity is formed between the upper die and the lower die, a first insert, a second insert and a third insert which are all detachable are arranged in the inner cavity, the first insert is arranged between the second insert and the third insert, a first positioning part is arranged on the first insert, and a second positioning part is arranged on the second insert. A first positioning part is arranged on the first insert, a second positioning part is arranged on the second insert, a third positioning part is arranged on the third insert, the first positioning part is used for positioning first hardware on a product, the second positioning part is used for positioning one end of second hardware on the product, and the third positioning part is used for positioning the other end of the second hardware; a cavity for forming a plastic body on a product is defined by the upper mold, the lower mold, the first insert, the second insert, the first hardware and the second hardware, the movable insert structure is adopted, the product and the movable insert can be taken out together and then separated after injection molding, and therefore the demolding structure is simplified, and the mold manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of forming molds, in particular to a hardware forming mold for embedding a high-voltage rod of an ignition coil. Background Art

[0002] A gasoline generator is a type of generator. The gasoline generator converts chemical energy into mechanical energy to generate electricity. An engine and a high-voltage rod of an ignition coil are provided on the gasoline generator. The high-voltage rod of the ignition coil is an electrical component that generates high-voltage current. Its main function is to provide high-voltage current to the spark plug, so that the spark plug ignites the mixture in the piston cylinder of the engine, causing the engine to generate mechanical motion, and then realizing the power generation function.

[0003] The high-voltage rod of the ignition coil mainly includes a plastic body and a hardware part formed on the plastic body. Due to the special undercut structure between the hardware part and the plastic body, it is difficult to demold using the traditional slider mold structure, and a complex demolding structure needs to be set, resulting in a high mold manufacturing cost. Content of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the utility model provides a hardware forming mold for embedding a high-voltage rod of an ignition coil. It adopts a movable insert structure. After injection molding, the product and the movable insert can be taken out together and then separated, thereby simplifying the demolding structure and reducing the mold manufacturing cost.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hardware forming mold for embedding a high-voltage rod of an ignition coil includes an upper mold and a lower mold. An inner cavity is formed between the upper mold and the lower mold. Removable first insert, second insert and third insert are arranged in the inner cavity. The first insert is arranged between the second insert and the third insert. A first positioning portion is arranged on the first insert, a second positioning portion is arranged on the second insert, and a third positioning portion is arranged on the third insert. The first positioning portion is used to position the first hardware part on the product, the second positioning portion is used to position one end of the second hardware part on the product, and the third positioning portion is used to position the other end of the second hardware part. A cavity for forming the plastic body on the product is surrounded by the upper mold, the lower mold, the first insert, the second insert, the first hardware part and the second hardware part.

[0007] By arranging a first insert, a second insert, and a third insert that are all detachable in the inner cavity, the first insert, the second insert, and the third insert are respectively provided with a first positioning portion, a second positioning portion, and a third positioning portion. During production, first position the first hardware part on the first positioning portion, and then position the two ends of the second hardware part on the second positioning portion and the third positioning portion respectively, so that the first insert, the second insert, the third insert, the first hardware part, and the second hardware part are assembled to form an insert hardware module. Then bury the insert hardware module in the mold and injection mold to obtain the product. After mold opening, first take out the first insert, the second insert, the third insert, and the product together, and then detach and separate the first insert, the second insert, and the third insert from the product to obtain the product. Thus, by adopting a movable insert structure, after injection molding, the product and the movable insert can be taken out together and then separated, simplifying the demolding structure and reducing the mold manufacturing cost.

[0008] As a preferred solution, the first positioning portion is an annular positioning portion, a through hole communicating with the cavity is provided inside the annular positioning portion, the first hardware part is an annular hardware part, and the annular hardware part can be sleeved on the outside of the annular positioning portion.

[0009] As a preferred solution, the annular positioning portion is arranged on one side of the first insert facing the third insert, and the through hole penetrates through the side of the first insert away from the third insert.

[0010] As a preferred solution, the first insert has a detachable upper insert and a lower insert. The upper insert is provided with an upper arc portion, and the lower insert is provided with a lower arc portion. The upper arc portion and the lower arc portion form the annular positioning portion.

[0011] As a preferred solution, a positioning post extending in the vertical direction is provided on the lower insert, and a positioning hole is provided on the upper insert. During assembly, the positioning post passes through the positioning hole.

[0012] As a preferred solution, one end of the annular hardware part has a sleeve portion, the sleeve portion can be sleeved on the outside of the annular positioning convex portion, the other end of the annular hardware part is provided with a clamping portion, and a clamping ring that can be embedded in the plastic body is radially inward provided on the circumferential inner wall of the clamping portion. The clamping ring can abut against the end face of the annular positioning portion.

[0013] As a preferred solution, the second positioning portion is a positioning groove, and one end of the second hardware part can extend into the positioning groove to position one end of the second hardware part.

[0014] As a preferred solution, the third positioning portion is a first threaded portion, the other end of the second hardware part is provided with a second threaded portion, and the first threaded portion is threadedly connected to the second threaded portion to position the other end of the second hardware part.

[0015] As a preferred solution, the second insert is a nut, the first threaded portion is a threaded hole, and the second threaded portion is a threaded post.

[0016] As a preferred solution, a first receiving groove, a second receiving groove, and a third receiving groove are provided in the inner cavity. The first insert is detachably installed in the first receiving groove, the second insert is detachably installed in the second receiving groove, and the third insert is detachably installed in the third receiving groove.

[0017] Compared with the prior art, the present utility model has obvious advantages and beneficial effects. Specifically, by providing a first insert, a second insert, and a third insert that are all detachable in the inner cavity, and the first insert, the second insert, and the third insert are respectively provided with a first positioning portion, a second positioning portion, and a third positioning portion. During production, first position the first hardware part on the first positioning portion, and then position the two ends of the second hardware part on the second positioning portion and the third positioning portion respectively, so that the first insert, the second insert, the third insert, the first hardware part, and the second hardware part are assembled to form an insert hardware module. Then bury the insert hardware module into the mold for injection molding to obtain the product. After the mold is opened, first take out the first insert, the second insert, the third insert, and the product together, and then detach and separate the first insert, the second insert, and the third insert from the product to obtain the product. Thus, by adopting a movable insert structure, after injection molding, the product and the movable insert can be taken out together and then separated, simplifying the demolding structure and reducing the mold manufacturing cost.

[0018] To more clearly illustrate the structural features, technical means, and the specific purposes and functions achieved by the present utility model, the following further details the present utility model in conjunction with the drawings and specific embodiments: Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the mold closing state of the embodiment of the present utility model;

[0020] Figure 2 is a schematic cross-sectional view of the product forming state of the embodiment of the present utility model;

[0021] Figure 3 is a schematic three-dimensional view of the product forming state of the embodiment of the present utility model;

[0022] Figure 4 is Figure 3 a schematic structural diagram of removing the lower mold in

[0023] Figure 5 is Figure 4 the exploded view of

[0024] Description of the Reference Numerals in the Drawings:

[0025] 10 - Upper die; 11 - Lower die; 12 - Inner cavity; 121 - First accommodation groove; 122 - Second accommodation groove; 123 - Third accommodation groove; 13 - Cavity; 20 - First insert; 21 - First positioning portion; 22 - Through hole; 23 - Upper insert; 231 - Upper arc portion; 232 - Positioning hole; 24 - Lower insert; 241 - Lower arc portion; 30 - Second insert; 31 - Second positioning portion; 32 - Positioning rod; 40 - Third insert; 41 - Third positioning portion; 50 - Product; 51 - First hardware part; 511 - Sleeve portion; 512 - Clamping portion; 513 - Snap ring; 52 - Second hardware part; 521 - Second threaded portion; 522 - Annular baffle; 53 - Plastic body. Detailed implementation manner

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

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] As Figures 1-5 shown, the present utility model discloses a metal forming die for embedding a high-voltage rod of an ignition coil, including an upper die 10 and a lower die 11, and an inner cavity 12 is formed between the upper die 10 and the lower die 11.

[0029] The inner cavity 12 is provided with a first insert 20, a second insert 30, and a third insert 40 that are all detachable. The first insert 20 is arranged between the second insert 30 and the third insert 40. The first insert 20 is provided with a first positioning portion 21, the second insert 30 is provided with a second positioning portion 31, and the third insert 40 is provided with a third positioning portion 41.

[0030] The first positioning portion 21 is used to position the first hardware part 51 on the product 50, the second positioning portion 31 is used to position one end of the second hardware part 52 on the product 50, the third positioning portion 41 is used to position the other end of the second hardware part 52, and a cavity 13 for forming the plastic body 53 on the product 50 is defined among the upper die 10, the lower die 11, the first insert 20, the second insert 30, the first hardware part 51 and the second hardware part 52.

[0031] A first receiving groove 121, a second receiving groove 122 and a third receiving groove 123 are provided in the inner cavity 12. The first insert 20 is detachably installed in the first receiving groove 121, the second insert 30 is detachably installed in the second receiving groove 122, and the third insert 40 is detachably installed in the third receiving groove 123. By providing the first receiving groove 121, the second receiving groove 122 and the third receiving groove 123, after the first insert 20, the second insert 30, the third insert 40, the first hardware part 51 and the second hardware part 52 are pre-assembled to form an insert hardware module, the first insert 20, the second insert 30 and the third insert 40 are correspondingly inserted into the first receiving groove 121, the second receiving groove 122 and the third receiving groove 123, and then the first hardware part 51 and the second hardware part 52 can be embedded into the mold. The embedding is convenient. After molding, the first insert 20, the second insert 30, the third insert 40 and the product 50 are taken out integrally and then disassembled and separated, which is convenient for the demolding of the product 50.

[0032] The first positioning portion 21 is an annular positioning portion, and a through hole 22 communicating with the cavity 13 is provided inside the annular positioning portion. The first hardware part 51 is an annular hardware part, and the annular hardware part can be sleeved outside the annular positioning portion. By adopting the annular positioning portion and the first hardware part 51 being an annular hardware part, the annular hardware part is sleeved outside the annular positioning portion for preliminary positioning. Subsequently, the first insert 20 and the annular hardware are simultaneously embedded into the inner cavity 12 for final positioning, which is convenient for workers to operate and has high efficiency.

[0033] The annular positioning portion is provided on the side of the first insert 20 facing the third insert 40, and the through hole 22 penetrates through the side of the first insert 20 away from the third insert 40. By providing the through hole 22 to penetrate through the side of the first insert 20 away from the third insert 40, one end of the second hardware part 52 can conveniently pass through the through hole 22 to be docked with the second positioning portion 31.

[0034] The first insert 20 has an upper insert 23 and a lower insert 24 that are detachably connected. The upper insert 23 is provided with an upper arc portion 231, and the lower insert 24 is provided with a lower arc portion 241. The upper arc portion 231 and the lower arc portion 241 form the annular positioning portion. By providing the first insert 20 composed of the detachably connected upper insert 23 and lower insert 24, with the upper insert 23 having the upper arc portion 231 and the lower insert 24 having the lower arc portion 241, the upper insert 23 and the lower insert 24 can be processed separately, making the processing more convenient.

[0035] The lower insert 24 is provided with positioning posts (not shown) extending in the vertical direction. The upper insert 23 is provided with positioning holes 232. During assembly, the positioning posts are inserted into the positioning holes 232. Specifically, the number of both the positioning posts and the positioning holes 232 is two. By providing the positioning posts and the positioning holes 232, and inserting the positioning posts into the positioning holes 232, the assembly efficiency of the upper insert 23 and the lower insert 24 is higher and the accuracy is better.

[0036] One end of the annular hardware has a sleeve portion 511. The sleeve portion 511 can be sleeved outside the annular positioning convex portion. The other end of the annular hardware is provided with a clamping portion 512. The circumferential inner wall of the clamping portion 512 is radially inward provided with a snap ring 513 that can be embedded in the plastic body 53. The snap ring 513 can be abutted against the end face of the annular positioning portion.

[0037] The second positioning portion 31 is a positioning groove. One end of the second hardware 52 can extend into the positioning groove to position one end of the second hardware 52. By adopting the positioning groove, one end of the second hardware 52 can be inserted into the positioning groove to position one end of the second hardware 52, which is convenient for positioning and has high efficiency.

[0038] The second insert 30 is provided with a positioning rod 32. The positioning groove is provided on the end face of the positioning rod 32 close to the first insert 20.

[0039] The third positioning portion 41 is a first threaded portion. The other end of the second hardware 52 is provided with a second threaded portion 521. The first threaded portion is threadedly connected to the second threaded portion 521 to position the other end of the second hardware 52. By setting the third positioning portion 41 as the first threaded portion, the second threaded portion 521 at the other end of the second hardware 52 is threadedly connected to the first threaded portion to position the other end of the second hardware 52. The positioning method is stable and firm, making the accuracy of the second hardware 52 high after the product 50 is formed.

[0040] The second insert 30 is a nut, the first threaded portion is a threaded hole, the second threaded portion 521 is a threaded post, and the other end of the second hardware member 52 is further provided with an annular baffle 522 protruding radially outward. When the nut is assembled with the threaded post, the side wall of the annular baffle 522 close to the threaded post abuts against the nut; by providing the annular baffle 522, it can be judged that the second hardware member 52 and the second insert 30 are assembled in place when the nut abuts against the annular baffle 522, with high efficiency; in addition, during the injection molding process, the annular baffle 522 can block the molten plastic from entering the gap between the nut and the threaded post, avoiding difficulty in disassembling the nut subsequently.

[0041] It can be understood that the first threaded portion can also be a threaded post, and the second threaded portion 521 is correspondingly provided as a threaded hole.

[0042] It should be noted that the first hardware member 51 of the present utility model is positioned by sleeving outside the first positioning portion 21, and positioning can also be achieved by using a snap connection or a screw connection method to connect with the first positioning portion 21. The same applies to the second positioning portion 31 and the third positioning portion 41.

[0043] The usage method of the present utility model: First, the first hardware member 51 is sleeved outside the first positioning portion 21 on the first insert 20 for preliminary positioning. Then, one end of the second hardware member 52 is passed through the through hole 22 and extends outward and is inserted into the upward positioning groove of the second insert 30. Then, the other end of the second hardware member 52 is threadedly connected to the third positioning portion 41 on the third insert 40, so that the first insert 20, the second insert 30, the third insert 40, the first hardware member 51, and the second hardware member 52 are assembled to form an insert hardware module. Finally, the first insert 20, the second insert 30, and the third insert 40 on the insert hardware module are correspondingly inserted into the first accommodation groove 121, the second accommodation groove 122, and the third accommodation groove 123, and the insert hardware module can be buried in the mold; after the injection molding and mold opening, the first insert 20, the second insert 30, the third insert 40, and the product 50 are taken out together first, and then the first insert 20, the second insert 30, and the third insert 40 are disassembled and separated from the product 50 to obtain the product 50.

[0044] In summary, in the present utility model, the first insert 20, the second insert 30 and the third insert 40 which are all detachable are arranged in the inner cavity 12. The first insert 20, the second insert 30 and the third insert 40 are respectively provided with a first positioning portion 21, a second positioning portion 31 and a third positioning portion 41. During production, first, the first hardware part 51 is positioned on the first positioning portion 21, and then the two ends of the second hardware part 52 are respectively positioned on the second positioning portion 31 and the third positioning portion 41, so that the first insert 20, the second insert 30, the third insert 40, the first hardware part 51 and the second hardware part 52 are assembled to form an insert hardware module. Then, the insert hardware module is buried in a mold for injection molding to obtain the product 50. After the mold is opened, first, the first insert 20, the second insert 30, the third insert 40 and the product 50 are taken out together, and then the first insert 20, the second insert 30 and the third insert 40 are detached and separated from the product 50 to obtain the product 50. Therefore, by adopting a movable insert structure, after injection molding, the product 50 and the movable insert can be taken out together and then separated, simplifying the demolding structure and reducing the mold manufacturing cost.

[0045] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made to the above embodiments according to the technical reality of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A metal forming mold for embedding a high-voltage rod of an ignition coil, comprising an upper mold and a lower mold, wherein an inner cavity is formed between the upper mold and the lower mold, and characterized in that: The inner cavity is provided with a first insert, a second insert and a third insert, all of which are detachable. The first insert is arranged between the second insert and the third insert. The first insert is provided with a first positioning portion, the second insert is provided with a second positioning portion, and the third insert is provided with a third positioning portion. The first positioning portion is used to position the first hardware on the product, the second positioning portion is used to position one end of the second hardware on the product, and the third positioning portion is used to position the other end of the second hardware. The upper mold, the lower mold, the first insert, the second insert, the first hardware and the second hardware form a cavity with a plastic body on the molded product.

2. The ignition coil high voltage rod embedded in the metal forming mold according to claim 1 is characterized in that: The first positioning portion is an annular positioning portion, and a through hole communicating with the cavity is provided in the annular positioning portion. The first hardware piece is an annular hardware piece, and the annular hardware piece can be sleeved on the outer side of the annular positioning portion.

3. The ignition coil high voltage rod embedded in the metal forming mold according to claim 2 is characterized in that: The annular positioning portion is arranged on a side of the first insert facing the third insert, and the through hole penetrates a side of the first insert away from the third insert.

4. The ignition coil high voltage rod embedded in the metal forming mold according to claim 2 is characterized in that: The first insert comprises an upper insert and a lower insert which are detachably connected. The upper insert is provided with an upper arc-shaped portion, and the lower insert is provided with a lower arc-shaped portion. The upper arc-shaped portion and the lower arc-shaped portion constitute the annular positioning portion.

5. The ignition coil high voltage rod embedded in the metal forming mold according to claim 4, characterized in that: The lower insert is provided with a positioning column extending in the up-down direction, and the upper insert is provided with a positioning hole. During assembly, the positioning column is inserted into the positioning hole.

6. The ignition coil high voltage rod embedded in the metal forming mold according to claim 2, characterized in that: One end of the annular hardware has a sleeve portion, which can be sleeved on the outside of the annular positioning protrusion. The other end of the annular hardware is provided with a clamping portion. The circumferential inner wall of the clamping portion is radially inwardly provided with a clamping ring that can be embedded in the plastic body, and the clamping ring can abut against the end face of the annular positioning portion.

7. The ignition coil high voltage rod embedded in the metal forming mold according to claim 1, characterized in that: The second positioning portion is a positioning groove, and one end of the second hardware component can be inserted into the positioning groove so that the positioning groove positions the one end of the second hardware component.

8. The ignition coil high voltage rod embedded in the metal forming mold according to claim 1, characterized in that: The third positioning portion is a first threaded portion, the other end of the second hardware is provided with a second threaded portion, and the first threaded portion is threadedly connected with the second threaded portion so that the first threaded portion positions the other end of the second hardware.

9. The ignition coil high voltage rod embedded in the metal forming mold according to claim 8, characterized in that: The second insert is a nut, the first threaded portion is a threaded hole, and the second threaded portion is a threaded column.

10. The ignition coil high voltage rod embedded in the metal forming mold according to any one of claims 1 to 9, characterized in that: The inner cavity is provided with a first accommodating groove, a second accommodating groove and a third accommodating groove. The first insert is detachably installed in the first accommodating groove, the second insert is detachably installed in the second accommodating groove, and the third insert is detachably installed in the third accommodating groove.

Images