An assembly guide fixture for press-fitting spark plug sleeves for G16 engines

Abstract

This utility model relates to an assembly guide fixture suitable for press-fitting spark plug sleeves in G16 engines, belonging to the field of automotive engine production equipment. The guide fixture is placed flat on the engine. Two locating pins are installed on the upper plate of the guide fixture. The locating pins are inserted into the locating holes on the engine surface to connect the guide fixture to the engine. The double locating pins ensure the accuracy of the fixture's assembly position. Four guide sleeves respectively ensure the position and direction of the four cylinder spark plug sleeves during press-fitting. The guide sleeves are designed according to the shape of the piston sleeve and cylinder head. The guide sleeves can effectively ensure that there is a gap between the spark plug sleeve and the guide fixture. The inner diameter of the spark plug sleeve press-fitting guide fixture is designed according to the outer diameter of the sleeve and the size of the cylinder head. Its machining and positional dimension accuracy requirements are high. The position of the four guide sleeves is based on the position of the cylinder bore of the G16 engine. The guide sleeves and the upper plate are positioned by a stop. Its function is to ensure that the spark plug sleeve and the spark plug sleeve mounting hole on the cylinder head are always coaxial during the press-fitting process, ensuring accurate press-fitting position.

Description

Technical Field

[0001] This utility model belongs to the field of automobile engine production equipment. Specifically, this utility model relates to an assembly guide tooling suitable for the press-fitting of spark plug sleeves for G16 engines. Background Technology

[0002] Spark plug sleeves are an important component of gasoline engines, fitting tightly to the cylinder head. They require auxiliary tools to press them into the cylinder head. Because of their cylindrical, thin-walled tube structure, they are prone to deformation during press-fitting, affecting airtightness. Existing manual hammering fixtures can ensure the quality of spark plug sleeve press-fitting, but the assembly efficiency is low. Using machine press-fitting also requires auxiliary guiding fixtures to ensure that the sleeve does not deform during press-fitting. Summary of the Invention

[0003] To overcome the problems existing in the background technology, this utility model discloses an assembly guide fixture suitable for the press-fitting of spark plug sleeves for G16 engines. The assembly guide fixture for the press-fitting of spark plug sleeves for G16 engines is placed flat on the engine. Two locating pins are installed on the upper plate of the guide fixture. The locating pins are inserted into the locating holes on the engine surface to connect the guide fixture to the engine. The double locating pins ensure the positioning accuracy of the fixture assembly. Four guide sleeves respectively ensure the position and direction of the press-fitting of spark plug sleeves for four cylinders. The guide sleeves are designed according to the shape of the piston sleeve and cylinder head. The inner diameter of the spark plug sleeve press-fitting guide fixture is designed according to the outer diameter of the sleeve and the size of the cylinder head. Its machining and positional dimensions require high precision. The position of the four guide sleeves is based on the position of the cylinder bore of the G16 engine. The guide sleeves and the upper plate are positioned by a stop. Its function is to ensure that the spark plug sleeve and the spark plug sleeve mounting hole on the cylinder head are always coaxial during the press-fitting process, ensuring the accuracy of the press-fitting position.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] The assembly guide fixture applicable to press-fitting of G16 engine is characterized in that the guide fixture is placed flat on the engine, and the guide fixture includes an upper plate, a lower plate, a first positioning pin, a second positioning pin, a support block, and a guide sleeve.

[0006] The upper plate is connected to the lower plate. The front and back of the upper plate are provided with a first positioning pin and a second positioning pin. The support block is located at the four corners of the bottom surface of the lower plate. The top surface of the upper plate is provided with four guide holes. Guide sleeves are installed at the guide holes and spark plug sleeves are inserted into the guide sleeves.

[0007] Preferably, it includes a left handle and a right handle; the left handle and the right handle are located at the left and right ends of the top surface of the upper plate.

[0008] Preferably, the plate includes a locating pin mounting hole; the locating pin mounting hole is disposed through the front and rear edges of the top surface of the upper plate.

[0009] As a preferred embodiment, the device includes a top mounting hole; the top mounting hole is located on the top surface of the first positioning pin and the second positioning pin.

[0010] As a preferred embodiment, the upper plate includes: a first support block mounting hole; the first support block mounting hole is disposed through the four corners of the top surface of the upper plate.

[0011] Preferably, the support block includes a second support block mounting hole, which is located on the top surface of the support block.

[0012] As a preferred embodiment, the guide sleeve mounting plate is provided on both sides of the guide sleeve ring.

[0013] As a preferred embodiment, the guide sleeve includes a second guide sleeve mounting hole; the second guide sleeve mounting hole is disposed through the guide sleeve mounting plate.

[0014] As a preferred embodiment, the first guide sleeve mounting hole is provided through the top surface of the upper plate. Two first guide sleeve mounting holes are arranged as a group, and a group of first guide sleeve mounting holes is provided on both sides of each guide opening.

[0015] The beneficial effects of this utility model are as follows: The assembly guide fixture for G16 engine spark plug sleeve press-fitting is placed flat on the engine. Two locating pins are installed on the upper plate of the guide fixture. These pins are inserted into locating holes on the engine surface to connect the guide fixture to the engine. The double locating pins ensure the accuracy of the fixture's assembly position. Four guide sleeves respectively ensure the position and direction of the spark plug sleeve press-fitting for the four cylinders. The guide sleeves are designed according to the shape of the piston sleeve and cylinder head. The inner diameter of the spark plug sleeve press-fitting guide fixture is designed according to the outer diameter of the sleeve and the cylinder head size. Its machining and positional dimensional accuracy requirements are high. The positions of the four guide sleeves are based on the cylinder bore position of the G16 engine. The guide sleeves and the upper plate are positioned by a stop, ensuring that the spark plug sleeve and the spark plug sleeve mounting hole on the cylinder head remain coaxial during the press-fitting process, thus ensuring accurate press-fitting position. Attached Figure Description

[0016] Figure 1 A schematic diagram showing the connection between the guide tooling and the engine;

[0017] Figure 2 A schematic diagram of the guiding tooling structure;

[0018] Figure 3 This is a structural schematic diagram of the upper plate.

[0019] Figure 4 This is a schematic diagram of the support block structure;

[0020] Figure 5 This is a structural diagram of the first locating pin;

[0021] Figure 6 This is a schematic diagram of the guide sleeve.

[0022] In the diagram, the components are: 1. Pressing equipment; 2. Positioning fixture; 3. Engine; 4. Guide fixture; 5. Upper plate; 6. Lower plate; 7. Left handle; 8. Right handle; 9. First positioning pin; 10. Second positioning pin; 11. Support block; 12. Guide sleeve; 13. Spark plug sleeve; 14. Positioning pin mounting hole; 15. First support block mounting hole; 16. Guide opening; 17. First guide sleeve mounting hole; 18. Second support block mounting hole; 19. Top mounting hole; 20. Guide sleeve mounting plate; 21. Second guide sleeve mounting hole. Detailed Implementation

[0023] To make the above objectives, technical solutions and beneficial effects clearer and more explicit, the present invention will be described in detail below with reference to the accompanying drawings.

[0024] like Figure 1-6 As shown, the assembly guide fixture for pressing spark plug sleeves for G16 engines is placed flat on the engine. The guide fixture 4 includes an upper plate 5, a lower plate 6, a first positioning pin 9, a second positioning pin 10, a support block 11, and a guide sleeve 12.

[0025] The upper plate 5 is connected to the lower plate 6. The left and right ends of the top surface of the upper plate 5 are provided with a left handle 7 and a right handle 8. The front and back of the upper plate 5 are provided with a first positioning pin 9 and a second positioning pin 10. The support block 11 is provided at the four corners of the bottom surface of the lower plate 6. The top surface of the upper plate 5 is provided with four guide holes 16. A guide sleeve 12 is installed at the guide hole 16, and a spark plug sleeve 13 is inserted into the guide sleeve 12.

[0026] The left handle 7 and right handle 8 are located on the top surface of the upper plate 5. Positioning pin mounting holes 14 are provided through the front and rear edges of the top surface of the upper plate 5. A top mounting hole 19 is provided on the top surface of the first positioning pin 9. After the top mounting hole 19 coincides with the positioning pin mounting hole 14, a pin is inserted to install the first positioning pin 9 and the second positioning pin 10. The first positioning pin 9 and the second positioning pin 10 have the same structure and are inserted into the positioning holes on the surface of the engine 3. First support block mounting holes 15 are provided through the four corners of the top surface of the upper plate 5. Second support block mounting holes 18 are provided on the top surface of the support block 11. When installing the support block 11, the first support block mounting holes 15 and the second support block mounting holes 18 coincide, and a pin is inserted for installation. A first guide sleeve mounting hole 17 is provided through the top surface of the upper plate 5. Two guide sleeve mounting holes 17 are arranged in a group. Each guide opening 16 has a first guide sleeve mounting hole 17 on each side. Guide sleeve mounting plates 20 are arranged on both sides of the guide sleeve 12 ring. A second guide sleeve mounting hole 21 is provided through the top surface of the guide sleeve mounting plate 20. When installing the guide sleeve 12, the top of the guide sleeve 12 is inserted from the bottom surface of the guide opening 16. After the guide sleeve mounting plate 20 is aligned with the upper plate 5, the first guide sleeve mounting hole 17 and the second guide sleeve mounting hole 21 are aligned and then a pin is inserted for fixation. The top surface of the upper plate 5 is provided with at least four guide openings 16. Guide sleeves 12 are installed at the four guide openings 16 and guide sleeves 13 are inserted at the four guide sleeves 12. After the guide fixture 4 is assembled, it is placed flat on the engine 3. When the guide fixture 4 is placed, the first positioning pin 9 and the second positioning pin 10 are inserted into the positioning holes on the surface of the engine 3.

[0027] The upper plate 5 of the assembly guide fixture for G16 engine spark plug sleeve press-fitting is provided with a first locating pin 9 and a second locating pin 10, forming a double locating pin configuration. The double locating pins ensure the assembly position accuracy of the guide fixture 4. Four guide sleeves 12 respectively ensure the position and direction of the four cylinder spark plug sleeve press-fitting. The guide sleeves 12 are designed according to the shape of the spark plug sleeve 13 and the cylinder head. The guide sleeves 12 effectively ensure a gap between the spark plug sleeve 13 and the guide fixture 4. The inner diameter of the guide fixture 4 is designed according to the outer diameter of the spark plug sleeve and the size of the cylinder head. Its machining and positional dimensional accuracy requirements are high. The positions of the four spark plug sleeves 13 are determined by G... Using the position of the 3rd cylinder bore of the 16th engine as a reference, the locating pin sleeve is used for positioning to ensure accurate positioning. The guide fixture 4 can simultaneously position the four spark plug sleeves without frequent disassembly of the fixture, reducing cumbersome operation steps. During operation, the four spark plug sleeves are pre-assembled into the four guide sleeves 12 of the guide fixture 4, and positioned by the first locating pin 9, the second locating pin 10 and the locating pin on the 3rd cylinder head of the engine. At this time, the locating fixture 2, the four guide sleeves 12, the four spark plug sleeves and the spark plug sleeve mounting holes on the engine cylinder head are coaxial. The pressing equipment 1 presses the spark plug sleeves into the cylinder head in the order of 2-3-1-4 cylinders to complete the operation.

[0028] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. An assembly guide fixture suitable for press-fitting spark plug sleeves in a G16 engine, characterized in that, The guide fixture is placed flat on the engine. The guide fixture includes an upper plate, a lower plate, a first positioning pin, a second positioning pin, a support block, and a guide sleeve. The upper plate is connected to the lower plate. The front and back of the upper plate are provided with a first positioning pin and a second positioning pin. The support block is located at the four corners of the bottom surface of the lower plate. The top surface of the upper plate is provided with four guide holes. Guide sleeves are installed at the guide holes and spark plug sleeves are inserted into the guide sleeves.

2. The assembly guide tooling for press-fitting spark plug sleeves for G16 engines as described in claim 1, characterized in that, include: Left handle and right handle; the left handle and right handle are located at the left and right ends of the top surface of the upper plate.

3. The assembly guide fixture for press-fitting spark plug sleeves of a G16 engine as described in claim 1, characterized in that, include: Positioning pin mounting holes; the positioning pin mounting holes are provided through the front and rear edges of the top surface of the upper plate.

4. The assembly guide fixture for press-fitting spark plug sleeves of a G16 engine as described in claim 1, characterized in that, include: Top mounting hole; the top mounting hole is provided on the top surface of the first positioning pin and the second positioning pin.

5. The assembly guide tooling for press-fitting spark plug sleeves for G16 engines according to claim 1, characterized in that, include: The first support block mounting hole is provided through the four corners of the top surface of the upper plate.

6. The assembly guide tooling for press-fitting spark plug sleeves for G16 engines according to claim 1, characterized in that, include: The second support block mounting hole is located on the top surface of the support block.

7. The assembly guide tooling for press-fitting spark plug sleeves for G16 engines according to claim 1, characterized in that, include: Guide sleeve mounting plate; the guide sleeve mounting plate is disposed on both sides of the guide sleeve ring.

8. The assembly guide tooling for press-fitting spark plug sleeves for G16 engines according to claim 7, characterized in that, include: The second guide sleeve mounting hole is provided through the guide sleeve mounting plate.

9. The assembly guide fixture for press-fitting spark plug sleeves of a G16 engine according to claim 1, characterized in that, include: First guide sleeve mounting hole; The first guide sleeve mounting hole is provided through the top surface of the upper plate. Two first guide sleeve mounting holes are set together, and a set of first guide sleeve mounting holes is provided on both sides of each guide opening.

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