A mechanism for core-pulling molding of a circular hole of a circumferential circle of an automobile oil injection ring

Abstract

The utility model discloses a mechanism for the core-pulling forming of the circular hole of the circumferential circle of the oil injection ring of an automobile, which comprises a sliding block seat, a sliding block insert is arranged on one side of the sliding block seat, an insert needle is slidably connected in the sliding block insert, a spring is mounted on the outer side of the insert needle, an inner sliding block is slidably connected in the sliding block seat, one end of the inner sliding block is slidably connected in the sliding block insert, a plurality of guide grooves with the same angle as the oil injection hole are processed in the sliding block insert, the insert needle can move in the guide grooves under the action of the spring, and the inner sliding block part at the rear moves, so that the core-pulling circular hole with multiple angles is realized at the same time. Through the forming mechanism, the number of forming mechanisms is simplified, the processing amount and the processing cost are reduced, and the steel strength of other mold forming parts is retained. Meanwhile, the structure is not limited to the core-pulling of holes in a single direction and number, and can be used for the core-pulling forming of holes in multiple directions and numbers at a time. The structure can be used for oil injection rings of different specifications.

Description

Technical Field

[0001] This utility model relates to the field of fuel injection ring processing technology, specifically a mechanism for core-pulling forming of the circumferential circular hole of an automotive fuel injection ring. Background Technology

[0002] The oil spray ring is injection molded using suitable plastic granules and glass fiber additives, with oil spray holes arranged in a ring around its side. For this type of circular hole structure, the conventional design uses a slider core-pulling mechanism or a slanted ejector mechanism for each hole. This design is suitable for single holes or a small number of holes. However, for an oil spray ring with 15 or more ring-shaped oil spray holes, the spacing between adjacent holes will vary depending on the size of the oil spray ring, and the axial angles of the holes will also differ. If a slider or slanted ejector mechanism is designed for each hole, the mold design will be more complex, the machining workload will increase, and the manufacturing cost will increase exponentially. Furthermore, if the distance between adjacent holes is too close, the strength of the remaining steel in the mold will be weakened after the molding mechanism is designed, affecting its service life.

[0003] To address this, a mechanism for core-pulling forming of the circular holes around the fuel injection ring in automobiles is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a mechanism for core-pulling of the circumferential holes of an automotive fuel injection ring, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mechanism for core forming of a circular hole around an automotive fuel injection ring, comprising a slider seat, a slider insert on one side of the slider seat, an insert pin slidably connected inside the slider insert, a spring installed on the outside of the insert pin, an inner slider slidably connected inside the slider seat, and one end of the inner slider slidably connected inside the slider insert.

[0006] The end of the inner slider is provided with an arc-shaped part, and the end of the insert pin is provided with a ball part, and the arc-shaped part and the ball part are adapted to each other.

[0007] Preferably, the slider seat and the inner slider are slidably connected by an inclined guide post, and the inclined guide post is installed on the upper mold.

[0008] Preferably, the inner slider has a limiting hole.

[0009] Preferably, a limiting pin is inserted into the slider seat, and the limiting pin passes through the interior of the limiting hole.

[0010] Preferably, the outer side of the insert pin is provided with a limiting groove.

[0011] Preferably, the slider insert has a limiting insert that matches the limiting groove installed inside.

[0012] Compared with existing technologies, the advantages of this invention are as follows: By machining multiple guide grooves with the same angle as the oil injection holes within the slider insert, the insert pin can move within the guide grooves under the force of a spring. Then, through the movement of the subsequent inner slider component, multi-angle core-pulling of circular holes can be achieved simultaneously. This forming mechanism simplifies the number of forming mechanisms, reduces processing volume and costs, and preserves the steel strength of other mold forming parts. Furthermore, this structure is not limited to core-pulling in a single direction and number of holes; it can perform core-pulling in multiple directions and with multiple numbers of holes at once. This structure can be used for oil injection rings of different specifications. Attached Figure Description

[0013] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the pin of this utility model.

[0016] In the diagram: 1. Slider seat; 2. Inner slider; 21. Arc-shaped part; 3. Angled guide post; 4. Slider insert; 5. Insert pin; 51. Ball part; 52. Limiting groove; 6. Spring; 7. Limiting insert; 8. Limiting pin; 9. Limiting hole; 10. Male mold core. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] Please see Figure 1-3 This utility model provides a technical solution: a mechanism for core forming of a circular hole around an automotive fuel injector ring, including a slider seat 1, a slider insert 4 on one side of the slider seat 1, a guide groove with the same angle as the fuel injector hole inside the slider insert 4, a pin 5 slidably connected to the guide groove inside the slider insert 4, a spring 6 installed on the outside of the pin 5, an inner slider 2 slidably connected inside the slider seat 1, and one end of the inner slider 2 slidably connected to the inside of the slider insert 4.

[0019] The end of the inner slider 2 is provided with an arc-shaped part 21, and the end of the pin 5 is provided with a ball part 51. The arc-shaped part 21 and the ball part 51 are adapted to each other.

[0020] like Figure 1 and Figure 2As shown: The slider seat 1 and the inner slider 2 are slidably connected by an inclined guide post 3, which is installed on the upper mold. With the above settings, the upper mold drives the inclined guide post 3 to move upward, which first allows the inner slider 2 to slide inside the slider seat 1, so that the inner slider 2 loses its restrictive effect on the insert pin 5.

[0021] like Figure 2 As shown: a limiting hole 9 is provided on the inner slider 2, and a limiting pin 8 is inserted into the slider seat 1. The limiting pin 8 passes through the interior of the limiting hole 9. With the above settings, the position of the inner slider 2 can be limited by the limiting pin 8 during the movement of the inner slider 2.

[0022] like Figure 2 and 3 As shown: The outer side of the insert 5 is provided with a limiting groove 52, and the inside of the slider insert 4 is equipped with a limiting insert 7 that matches the limiting groove 52; through the above settings, the position of the insert 5 can be restricted, thereby ensuring that the insert 5 can slide inside the slider insert 4, and at the same time, it can also prevent the insert 5 from detaching from the inside of the slider insert 4.

[0023] Working principle: When the injection molding is completed, the upper mold with the inclined guide post 3 moves upward when the mold opens. Since the slider seat 1 and the inner slider 2 contact the inclined guide post 3 through the guide post hole in a certain order, the inclined guide post 3 moves upward first and then moves the inner slider 2. After the inner slider 2 moves a certain distance, it contacts the limit pin 8 and stops moving.

[0024] When the inner slider 2 moves, the arc-shaped part 21 designed at the front end of the inner slider 2 disengages from the ball part 51 of the insert pin 5. Driven by the front spring 6, the insert pin 5 moves along the guide groove inside the slider insert 4. When the insert pin 5 moves to the limiting insert 7, the core pulling is completed.

[0025] When the product is removed and the next injection molding is performed, the inclined guide post 3 moves downward and the inner slider 2 moves horizontally. Through the arc contact surface, the insert pin 5 moves along the guide rail until the end of the insert pin 5 is completely in contact with the male mold core 10, and then the next injection molding is performed.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanism for core-pulling of a circular hole around an automotive fuel injection ring, comprising a slider seat (1), characterized in that: A slider insert (4) is provided on one side of the slider seat (1). A pin (5) is slidably connected inside the slider insert (4). A spring (6) is installed on the outside of the pin (5). An inner slider (2) is slidably connected inside the slider seat (1). One end of the inner slider (2) is slidably connected inside the slider insert (4). The end of the inner slider (2) is provided with an arc-shaped part (21), and the end of the insert (5) is provided with a ball part (51). The arc-shaped part (21) and the ball part (51) are adapted to each other.

2. The mechanism for core-pulling of the circumferential hole of an automotive fuel injection ring according to claim 1, characterized in that: The slider seat (1) and the inner slider (2) are slidably connected by an inclined guide post (3), which is installed on the upper mold.

3. The mechanism for core-pulling of the circumferential hole of an automotive fuel injection ring according to claim 1, characterized in that: The inner slider (2) has a limiting hole (9).

4. The mechanism for core-pulling of the circumferential hole of an automotive fuel injection ring according to claim 3, characterized in that: A limiting pin (8) is inserted into the slider seat (1), and the limiting pin (8) penetrates the interior of the limiting hole (9).

5. The mechanism for core-pulling of the circumferential hole of an automotive fuel injection ring according to claim 1, characterized in that: The outer side of the insert (5) is provided with a limiting groove (52).

6. The mechanism for core-pulling of the circumferential hole of an automotive fuel injection ring according to claim 5, characterized in that: The slider insert (4) has a limiting insert (7) that is adapted to the limiting groove (52) installed inside.

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