Stamping die for fuel injector seat

Abstract

The utility model relates to the technical field of oil sprayers, in particular to an oil sprayer seat stamping die which comprises an upper die seat and a lower die seat, a guide column is fixedly connected to the bottom end of the upper die seat, a sliding groove is formed in the guide column, a ball assembly capable of reducing friction is arranged in the sliding groove, a guide sleeve is arranged at the top end of the lower die seat, and the guide sleeve is fixedly connected with the guide column. An oil storage cavity is formed in the bottom end of the inner wall of the guide sleeve, an oil storage tank is arranged on the outer wall of the guide sleeve, the bottom end of the oil storage tank is connected with an oil pipe in a penetrating mode, and the oil pipe is communicated with the oil storage cavity. By means of the ball assemblies arranged on the edges of the guide columns, when the guide columns are inserted into the guide sleeves, the balls roll on the inner walls of the guide sleeves, so that the space between the guide columns and the guide sleeves is reduced, friction force is greatly reduced, abrasion of the surfaces of the guide columns is greatly reduced, and due to reduction of abrasion of the guide columns, positioning accuracy is not reduced any more; and the service life is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injectors, in particular to a fuel injector seat stamping die. Background Art

[0002] The injector seat stamping die is a specialized mold used to manufacture injector seats. Through a stamping process, the upper and lower die blocks, punch, and die components work together to apply pressure to the metal sheet under the action of a press, causing the sheet to plastically deform. This produces an injector seat component with a specific shape, dimensional accuracy, and quality requirements. This die plays a crucial role in ensuring the molding quality and production efficiency of the injector seat.

[0003] The injector seat stamping die with application number CN201720732608.2 has an upper die base and a lower die base; it is characterized in that: an extrusion punch and an extrusion die are provided between the upper die base and the lower die base; the extrusion punch is provided with a punch fixing plate and a limit plate, a lower die pad is provided under the extrusion punch, and a discharge plate is provided on the extrusion punch; the extrusion die is provided with a die fixing plate and a die pad, a discharge core is provided in the middle of the extrusion die, and the discharge core is provided with a discharge core fixing plate; the upper die base and the extrusion die constitute the upper die, and the lower die base and the extrusion punch constitute the lower die.

[0004] The guide device in the above patent document is positioned by sliding guide pins and sliding guide sleeves. When the stamping die is in operation, the guide pins need to be inserted into the guide sleeves. There is a large friction when the guide pins and the guide sleeves slide. After a long period of friction, the surface of the guide pins will wear, resulting in inaccurate positioning. In order to reduce the friction, it is necessary to frequently add lubricating oil to the sliding guide sleeves. The manual method of adding lubricating oil is inefficient, difficult to operate, and extremely time-consuming. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art and provides a fuel injector seat stamping die.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The top end of the lower mold base is provided with a guide pillar, and the guide pillar is provided with a slide groove, and a ball assembly that can reduce friction is provided in the slide groove, and the top of the lower mold base is provided with a guide sleeve, and the bottom end of the inner wall of the guide sleeve is provided with an oil storage cavity, and the outer wall of the guide sleeve is provided with an oil storage tank. The bottom end of the oil storage tank is connected with an oil pipe, and the oil pipe and the oil storage cavity are mutually connected. An external thread is provided at the highest point of the outer wall of the guide pillar, and the external thread is threadedly connected to a limiting ring. A notch is provided at the bottom end of the slide groove, and the ball assembly comprises a connecting rod, a limit block, and a ball, and the ball is rotatably connected to the outer wall of the connecting rod, the limit block is fixedly connected to the bottom end of the connecting rod, the connecting rod is slidably connected to the inner wall of the slide groove, the limit block is slidably connected to the notch, and the inner wall of the limit ring abuts against the outer wall of the upper end of the connecting rod.

[0008] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: the bottom end of the oil storage chamber is fixedly connected to one end of a spring, the other end of the spring is fixedly connected to a slide, the top of the slide is fixedly connected to a buffer pad, the top of the oil storage tank is provided with an oil inlet, the top of the oil storage tank is provided with an exhaust port, the oil storage tank is connected to the oil storage chamber through an oil pipe, the slide is slidably connected to the inner wall of the guide sleeve, and the buffer pad is slidably connected to the inner wall of the guide sleeve.

[0009] The beneficial effects of the utility model are:

[0010] By setting the ball assembly on the edge of the guide post, when the guide post is inserted into the guide sleeve, the balls roll on the inner wall of the guide sleeve, so that the friction between the guide post and the guide sleeve is reduced, thereby greatly reducing the wear on the surface of the guide post, greatly reducing the wear of the guide post, and the reduction in the wear of the guide post means that the positioning accuracy no longer decreases, and the service life is greatly increased.

[0011] The oil storage tank, oil pipe and oil storage chamber can be set up so that the guide post can be automatically replenished with lubricating oil after being inserted into the guide sleeve, which is beneficial to the smooth operation of the guide device, reduces the wear of the guide structure, and increases the service life. In addition, with the help of the spring and buffer pad, the impact force of the guide post on the guide sleeve when it falls can be greatly reduced, further increasing the service life of the guide post and guide sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the fuel injector seat stamping die proposed in the present invention;

[0013] Figure 2 This is a cross-sectional view of the guide post of the fuel injector seat stamping die proposed in the present utility model;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the ball assembly of the injector seat stamping die proposed by the utility model;

[0015] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the guide sleeve of the injector seat stamping die proposed by the utility model.

[0016] In the figure: 1. Upper die base; 2. Lower die base; 3. Guide pillar; 4. Slide groove; 5. Ball assembly; 6. Guide sleeve; 7. Oil storage chamber; 8. Oil storage tank; 9. Oil pipe; 10. External thread; 11. Limiting ring; 12. Notch; 13. Limit block; 14. Ball; 15. Spring; 16. Slide plate; 17. Buffer pad; 18. Oil inlet; 19. Exhaust port; 20. Connecting rod. DETAILED DESCRIPTION

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

[0018] Reference Figure 1-Figure 4 As shown, the injector seat stamping die includes an upper die base 1 and a lower die base 2. The bottom end of the upper die base 1 is fixedly connected to a guide column 3, a slide groove 4 is provided on the guide column 3, and a ball assembly 5 that can reduce friction is provided in the slide groove 4. The top of the lower die base 2 is provided with a guide sleeve 6, and an oil storage cavity 7 is provided at the bottom end of the inner wall of the guide sleeve 6. An oil storage tank 8 is provided on the outer wall of the guide sleeve 6. The bottom end of the oil storage tank 8 is connected with an oil pipe 9, and the oil pipe 9 and the oil storage cavity 7 are connected to each other. The upper die base 1 and the lower die base 2 are existing technologies. The specific model specifications need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it is not repeated. An external thread 10 is provided at the highest point of the outer wall of the guide column 3, and the external thread 10 is threadedly connected to a limiting ring 11. A notch 12 is provided at the bottom end of the slide groove 4. The limiting ring 11 is connected to the guide column 3 through the external thread 10. The position of the ring 11 is just located at the part above the connecting rod 20 where the ball 14 is not set, so that the limiting ring 11 can block the connecting rod 20 so that it will not fall out of the slide groove 4. The ball assembly 5 includes a connecting rod 20, a limit block 13, and a ball 14. The ball 14 is rotatably connected to the outer wall of the connecting rod 20, and the limit block 13 is fixedly connected to the bottom end of the connecting rod 20. The limit block 13 limits the movement of the bottom end of the connecting rod 20 by inserting into the slot 12, making the installation of the ball assembly 5 easier. The connecting rod 20 is slidably connected to the inner wall of the slide groove 4, and the limit block 13 is slidably connected to the slot 12. The inner wall of the limiting ring 11 is against the outer wall of the upper end of the connecting rod 20. The bottom end of the guide post 3 is semicircular, and the top of the guide sleeve 6 is provided with an inwardly concave slope, which makes it easier and more accurate for the guide post 3 to be inserted into the guide sleeve 6, greatly reducing the situation where the guide post 3 hits the top of the guide sleeve 6.

[0019] The bottom end of the oil storage chamber 7 is fixedly connected to one end of the spring 15, the other end of the spring 15 is fixedly connected to the slide plate 16, the top of the slide plate 16 is fixedly connected to the buffer pad 17, the top of the oil storage tank 8 is provided with an oil inlet 18, and the top of the oil storage tank 8 is provided with an exhaust port 19. The length of the guide column 3 can just be fully inserted into the guide sleeve 6. When fully inserted, the upper mold base 1 and the lower mold base 2 are just merged. The oil storage tank 8 is connected to the oil storage chamber 7 through the oil pipe 9, the slide plate 16 is slidably connected to the inner wall of the guide sleeve 6, and the buffer pad 17 is slidably connected to the inner wall of the guide sleeve 6. The buffer pad 17 is made of rubber, and the area of ​​the buffer pad 17 is smaller than the area of ​​the slide plate 16.

[0020] When the utility model is used, first insert the limit block 13 at the bottom end of the connecting rod 20 into the notch 12 at the bottom end of the inner wall of the chute 4, then install the connecting rod 20 with the side of the ball 14 facing outward into the chute 4, then put the limit ring 11 on the guide post 3 and connect it with the external thread 10 on the outer wall of the guide post 3, so as to complete the installation of the ball assembly 5. Then, when molding, the guide post 3 is inserted into the guide sleeve 6 and pushes the buffer pad 17 and the slide plate 16 to move downward. While the slide plate 16 moves downward, it squeezes the spring 1 5. The lower end of the slide plate 16 enters the oil storage chamber 7 to pick up lubricating oil, and under the downward pressure of the slide plate 16, the lubricating oil inside the oil storage chamber 7 enters the oil storage tank 8 through the oil pipe 9, and the gas in the oil storage tank 8 is discharged from the exhaust port 19. After the molding is completed, the guide post 3 leaves the guide sleeve 6. Under the action of the spring 15, the slide plate 16 and the buffer pad 17 move upward, and the oil stained on the lower end of the slide plate 16 is smoothly hung on the inner wall of the guide sleeve 6. The exhaust port 19 enters the air, and the oil in the oil storage tank 8 returns to the oil storage chamber 7, thereby completing the automatic lubrication.

Claims

1. A fuel injector seat stamping die, comprising an upper die base (1) and a lower die base (2), characterized in that: The bottom end of the upper die base (1) is fixedly connected to a guide column (3), a slide groove (4) is provided on the guide column (3), and a ball assembly (5) capable of reducing friction is provided in the slide groove (4). The top end of the lower die base (2) is provided with a guide sleeve (6), an oil storage cavity (7) is provided at the bottom end of the inner wall of the guide sleeve (6), an oil storage tank (8) is provided on the outer wall of the guide sleeve (6), and an oil pipe (9) is connected to the bottom end of the oil storage tank (8), and the oil pipe (9) and the oil storage cavity (7) are mutually connected. An external thread (10) is provided at the highest point of the outer wall of the guide column (3). The external thread (10) is threadedly connected to a limiting ring (11), a notch (12) is provided at the bottom end of the slide groove (4), and the ball assembly (5) includes a connecting rod (20), a limiting block (13), and a ball (14). The ball (14) is rotatably connected to the outer wall of the connecting rod (20), the limiting block (13) is fixedly connected to the bottom end of the connecting rod (20), the connecting rod (20) is slidably connected to the inner wall of the slide groove (4), the limiting block (13) is slidably connected to the notch (12), and the inner wall of the limiting ring (11) is abutted against the outer wall of the upper end of the connecting rod (20).

2. The fuel injector seat stamping die according to claim 1, characterized in that: The bottom end of the oil storage chamber (7) is fixedly connected to one end of a spring (15), the other end of the spring (15) is fixedly connected to a slide plate (16), the top end of the slide plate (16) is fixedly connected to a buffer pad (17), the top end of the oil storage tank (8) is provided with an oil inlet (18), the top end of the oil storage tank (8) is provided with an exhaust port (19), the oil storage tank (8) is connected to the oil storage chamber (7) through an oil pipe (9), the slide plate (16) is slidably connected to the inner wall of the guide sleeve (6), and the buffer pad (17) is slidably connected to the inner wall of the guide sleeve (6).

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