Automatic press-fitting device for oil nozzle

Abstract

The invention relates to the technical field of automatic equipment for automobile parts, in particular to an automatic press-fitting device for an oil nozzle, which comprises a press-fitting table provided with a moving track; the cylinder cover adjusting assembly comprises a fixing mechanism and a moving mechanism; the oil nozzle adjusting assembly comprises a mounting disc, a rotating mechanism and a clamping mechanism; the press fitting assembly comprises a press fitting mechanism, a butt joint mechanism and a cooling mechanism; compared with the prior art, the oil injection nozzle press-fitting device can effectively guarantee that all the push rods still have high operation stability after working for a long time, timely cooling can reduce the risk of equipment failures, the downtime and the maintenance cost, meanwhile, the labor cost and the operation risk are effectively reduced, and rapid and stable press-fitting of the oil injection nozzle can be achieved through the automation technology.

Description

Technical Field

[0001] The invention relates to the technical field of automatic equipment of automobile parts, in particular to an automatic press-fitting device for a fuel injection nozzle. Background Art

[0002] With the development of society and economy, people's demand for automobiles is increasing. As a key component of the engine fuel supply system, the installation quality of the fuel injector directly affects the engine's fuel injection efficiency, power performance and emission level. The traditional manual or semi-automatic press-fitting method is not only inefficient, but also difficult to ensure the consistent installation force of each fuel injector, which increases the product failure rate and subsequent maintenance costs.

[0003] Existing nozzle press-fitting devices are often operated in a numerically controlled manner and can work for a long time without stopping the machine. However, the press-fitting push rod and the clamping push rod of the nozzle in the press-fitting device will be subjected to higher temperatures after working for a long time without stopping the machine. If the press-fitting push rod is exposed to excessively high temperatures for a long time, it will affect the service life of the press-fitting push rod and the assembly accuracy of the nozzle. Summary of the invention

[0004] The object of the present invention is to provide an automatic press-fitting device for a fuel injection nozzle to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An automatic press-fitting device for a fuel injection nozzle, comprising:

[0007] A press-fitting platform, wherein the press-fitting platform is provided with a movable track;

[0008] A cylinder head adjustment assembly, the cylinder head adjustment assembly comprises a fixing mechanism and a moving mechanism, the fixing mechanism is used to fix the cylinder head, and the moving mechanism is used to drive the cylinder head to move along the moving track after the cylinder head is fixed;

[0009] A fuel injection nozzle adjustment assembly, the fuel injection nozzle adjustment assembly comprising a mounting plate, a rotating mechanism and a clamping mechanism, the rotating mechanism is used to drive the mounting plate to rotate, the clamping mechanism is arranged around the mounting plate, and the clamping mechanism is used to clamp the fuel injection nozzle; and

[0010] A press-fitting assembly, the press-fitting assembly includes a press-fitting mechanism, a docking mechanism and a cooling mechanism. The press-fitting mechanism is arranged on the press-fitting table. The press-fitting mechanism is used to press-fit the clamped fuel injector. The docking mechanism is used to drive the cooling mechanism and the clamping mechanism to dock with each other when the press-fitting mechanism presses the fuel injector. The cooling mechanism is used to cool the press-fitting mechanism and the clamping mechanism.

[0011] Preferably, the fixing mechanism includes a mounting block, a fixing push rod and a fixing block, the mounting block is arranged on the movable track, the fixing push rod is arranged on the mounting block, and the fixing push rod is used to drive the fixing block to move and thereby fix the cylinder head to the mounting block.

[0012] Preferably, the moving mechanism comprises a moving push rod, the moving push rod is arranged on the moving track, the moving push rod is connected to the mounting block and is used to drive the mounting block to move along the moving track.

[0013] Preferably, the rotating mechanism comprises a rotating motor, which is connected to the press-fitting platform and is used to drive the mounting plate to rotate.

[0014] Preferably, the mounting plate is provided with a plurality of mounting holes, the clamping mechanism is arranged in the mounting hole, the clamping mechanism includes a guide block, a mounting ring, a reset spring, a clamping push rod and a clamping block, the guide block is arranged in the mounting hole, a guide groove is provided on the inner side wall of the guide block, the mounting ring is arranged in the guide groove, the reset spring is arranged inside the guide groove and is used to drive the mounting ring to reset, the clamping push rod is arranged around the mounting ring, and the clamping block is connected to the moving end of the clamping push rod.

[0015] Preferably, the press-fitting mechanism comprises a press-fitting push rod and a press-fitting head, wherein the press-fitting push rod is disposed on the press-fitting platform and is used to drive the press-fitting head to move along the guide block.

[0016] Preferably, the press-fitting push rod is provided with a cooling chamber 1, and the cooling mechanism includes a cooling cylinder and a circulating pump, the cooling cylinder is arranged on the press-fitting table, and the circulating pump is arranged on the cooling cylinder, and the circulating pump pumps the coolant in the cooling cylinder into the cooling chamber 1 for circulation.

[0017] Preferably, the clamping push rod is provided with a cooling chamber 2, and the docking mechanism includes a connecting pipe, a one-way valve, a magnetic locking valve, a magnetic suction block and a pressure valve, the connecting pipe is connected to the cooling chamber 1, the one-way valve is arranged on the mounting ring, the one-way valve is connected to the cooling chamber 2 of different clamping push rods through a pipeline, the liquid outlet and liquid inlet of the connecting pipe are both provided with the magnetic locking valve, the one-way valve is provided with the magnetic suction block corresponding to the magnetic locking valve arranged at the liquid outlet, and the pressure valve is also provided with the magnetic suction block corresponding to the magnetic locking valve arranged at the liquid inlet.

[0018] Preferably, the cooling mechanism further comprises a cooling pipe, and the cooling pipe is sequentially connected to each of the cooling chambers 2, and the cooling pipe is provided with two circulation ports, and the two circulation ports are respectively connected to the one-way valve and the pressure valve.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention drives the engine cylinder head fixed by the fixing mechanism to move through the moving mechanism, thereby reducing the movement of the press-fitting push rod in the press-fitting mechanism in the non-press-fitting direction, and improving the service life of the press-fitting push rod to a certain extent; through the setting of the docking mechanism, when the press-fitting push rod presses the fuel injector, the cooling mechanism will cool the press-fitting mechanism and the corresponding clamping mechanism for press-fitting at the same time, which can effectively ensure that each push rod (including the press-fitting push rod and the clamping push rod) still has high operational stability after a long period of work, and timely cooling can reduce the risk of equipment failure, reduce downtime and maintenance costs, and the setting of the rotating mechanism enables the present application to have multiple workstations. The setting of multiple workstations saves the loading time of the fuel injector and also allows each clamping push rod to be naturally cooled. The present invention effectively reduces labor costs and operating risks, and through automation technology, fast and stable press-fitting of the fuel injector can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The axial structure of the present invention is schematically shown Figure 1 ;

[0021] Figure 2 The axial structure of the present invention is schematically shown Figure 2 ;

[0022] Figure 3 It is a front view structural schematic diagram of the present invention;

[0023] Figure 4 for Figure 3 A schematic diagram of the partial enlarged structure of the middle A area;

[0024] Figure 5 This is a schematic diagram of the connection structure between the mounting plate and the guide block of the present invention;

[0025] Figure 6 This is a schematic diagram of the connection structure between the mounting ring and the clamping block of the present invention;

[0026] Figure 7 It is a schematic diagram of the connection structure between the cooling tube and the clamping push rod of the present invention;

[0027] Figure 8 It is a schematic diagram of the internal structure of the clamping push rod of the present invention.

[0028] In the figure: 1 press fitting table, 2 movable track, 3 mounting plate, 4 mounting block, 5 fixed push rod, 6 fixed block, 7 movable push rod, 8 rotating motor, 9 guide block, 10 mounting ring, 11 return spring, 12 clamping push rod, 13 clamping block, 14 press fitting push rod, 15 press fitting head, 16 cooling cylinder, 17 circulating pump, 18 connecting pipe, 19 non-return valve, 20 magnetic locking valve, 21 magnetic suction block, 22 pressure valve, 23 cooling pipe, 901 guide groove, 1201 cooling chamber two, 1401 cooling chamber one. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-8 , the present invention provides a technical solution:

[0031] An automatic press-fit device for fuel injection nozzles, as shown in the attached manual Figure 1 As shown, including:

[0032] A press-fitting platform 1, which is used for press-fitting the fuel injector. The press-fitting platform 1 is provided with a moving track 2, which is used for installing a mounting block 4 and a moving push rod 7;

[0033] The cylinder head adjustment assembly includes a fixing mechanism and a moving mechanism, wherein the fixing mechanism is used to fix the cylinder head, and the moving mechanism is used to drive the cylinder head to move along the moving track 2 after the cylinder head is fixed;

[0034] The fuel injector adjustment assembly includes a mounting plate 3, a rotating mechanism and a clamping mechanism, wherein the rotating mechanism is used to drive the mounting plate 3 to rotate, and the clamping mechanism is arranged around the mounting plate 3, and the clamping mechanism is used to clamp the fuel injector; and

[0035] The press-fitting assembly includes a press-fitting mechanism, a docking mechanism and a cooling mechanism. The press-fitting mechanism is arranged on the press-fitting table 1. The press-fitting mechanism is used to press-fit the fuel injector after clamping. The docking mechanism is used to drive the cooling mechanism and the clamping mechanism to dock with each other when the press-fitting mechanism presses the fuel injector. The cooling mechanism is used to cool the press-fitting mechanism and the clamping mechanism.

[0036] The fixing mechanism includes a mounting block 4, a fixed push rod 5 and a fixed block 6. The mounting block 4 is arranged on the moving track 2. The moving track 2 is used to limit the movement of the mounting block 4. The mounting block 4 is used to install the fixed push rod 5 and the fixed block 6 so that the fixed push rod 5 drives the fixed block 6 to fix the engine cylinder head. The fixed push rod 5 is arranged on the mounting block 4. The fixed push rod 5 is used to drive the fixed block 6 to move and then fix the cylinder head to the mounting block 4. In this embodiment, the fixed push rod 5, the moving push rod 7 and the clamping push rod 12 are all DC hydraulic push rods. The DC hydraulic push rod is a prior art and can be reasonably selected for load and stroke according to actual conditions.

[0037] The moving mechanism includes a moving push rod 7, one end of which is fixedly connected to one side of the moving track 2, and the other end of the moving push rod 7 is fixedly connected to the mounting block 4 and is used to drive the mounting block 4 to move along the moving track 2 to drive the engine cylinder head.

[0038] The rotating mechanism includes a rotating motor 8, which is an AKM2G2x servo motor capable of precise angle control. The rotating motor 8 is connected to the press-fitting table 1 and is used to drive the mounting plate 3 to rotate.

[0039] The mounting plate 3 is provided with a plurality of mounting holes, and the mounting holes are used to mount the guide block 9. The clamping mechanism is arranged in the mounting hole. The clamping mechanism comprises a guide block 9, a mounting ring 10, a reset spring 11, a clamping push rod 12 and a clamping block 13. The guide block 9 is fixedly connected to the mounting hole. The guide block 9 is used to limit the movement direction of the press-fitting head 15, so as to ensure that the press-fitting head 15 still has good stability after long-term use. A guide groove 901 is provided on the inner side wall of the guide block 9. The guide groove 901 is used to limit the movement direction of the mounting ring 10 so that it can only move along the mounting ring 10. The mounting ring 10 is arranged in the guide groove 901. The reset spring 11 is arranged inside the guide groove 901 and is used to drive the mounting ring 10 to reset. The clamping push rod 12 is arranged around the mounting ring 10. The clamping push rod 12 is used to drive the clamping block 13 to move. The clamping block 13 is fixedly connected to the moving end of the clamping push rod 12. The clamping block 13 is a rubber block, so the outer surface of the injector nozzle will not be damaged during clamping.

[0040] The press fitting mechanism comprises a press fitting push rod 14 and a press fitting head 15. The press fitting push rod 14 is arranged on the top of the press fitting platform 1 and is used to drive the press fitting head 15 to move along the guide block 9. The press fitting head 15 is used to press fitting the fuel injector.

[0041] The press-fitting push rod 14 is provided with a cooling chamber 1401, and the cooling chamber 1401 and the press-fitting head 15 are communicated with each other. Coolant is pumped into the cooling chamber 1401 through a circulating pump 17 to cool the inside of the press-fitting push rod 14. The cooling mechanism includes a cooling cylinder 16 and a circulating pump 17. The cooling cylinder 16 is arranged on the press-fitting table 1. The cooling cylinder 16 is used to store coolant. The circulating pump 17 is arranged in the cooling cylinder 16. The circulating pump 17 pumps the coolant in the cooling cylinder 16 into the cooling chamber 1401 for circulation.

[0042] The clamping push rod 12 is provided with a cooling chamber 1201, which is arranged at the fixed end of the clamping push rod 12. The cooling liquid is input into the cooling chamber 1201 to cool the inside of the clamping push rod 12. The docking mechanism includes a connecting pipe 18, a one-way valve 19, a magnetic locking valve 20, a magnetic suction block 21 and a pressure valve 22. The two ends of the connecting pipe 18 are respectively connected to the cooling chamber 1401 and the magnetic locking valve 20. The one-way valve 19 is arranged on the mounting ring 10. The one-way valve 19 is used to make the coolant only flow in one direction. Liquid flows into the cooling pipe 23, and the one-way valve 19 is connected to the cooling chamber 1201 of the different clamping push rod 12 through a pipeline. In the present embodiment, the one-way valve 19 is connected to the cooling chamber 1201 of the different clamping push rod 12 through the cooling pipe 23, and the liquid outlet and the liquid inlet of the connecting pipe 18 are both provided with a magnetic locking valve 20. The one-way valve 19 is provided with a magnetic suction block 21 corresponding to the magnetic locking valve 20 provided at the liquid outlet, and the pressure valve 22 is also provided with a magnetic suction block 21 corresponding to the magnetic locking valve 20 provided at the liquid inlet.

[0043] The cooling mechanism also includes a cooling pipe 23, which is connected to each cooling chamber 1201 in sequence. The cooling pipe 23 is provided with two circulation ports, which are respectively connected to the one-way valve 19 and the pressure valve 22.

[0044] Working principle: When in use, the fuel injector is inserted into the guide block 9 manually or by other front feeding devices, and the clamping push rod 12 clamps the fuel injector. Then, the rotating motor 8 drives the mounting plate 3 to rotate. When the corresponding guide block 9 moves to the bottom of the press-fitting push rod 14, the press-fitting push rod 14 drives the press-fitting head 15 to move, thereby driving the press-fitting head 15 to push the mounting ring 10 to move along the guide groove 901, thereby press-fitting the fuel injector into the cylinder head.

[0045] When the press-fitting head 15 and the mounting ring 10 are butted against each other, the magnetic block 21 is inserted into the press-fitting head 15 and the magnetic locking valve 20 is opened. The pumping of the coolant increases the pressure in the cooling chamber 2 1201 and thus opens the pressure valve 22. At this time, the circulating pump 17 drives the coolant to circulate along the cooling chamber 1 1401 and the cooling chamber 2 1201.

[0046] After the press-fitting is completed, the press-fitting head 15 is reset under the drive of the press-fitting push rod 14. At this time, the magnetic locking valve 20 and the magnetic suction block 21 move away from each other and are closed. Since there is no coolant pumped in, the pressure valve 22 will also be closed. The mounting ring 10 is reset under the drive of the reset spring 11. Then the rotating motor 8 drives the mounting plate 3 to rotate to start the press-fitting of the next injector.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic press-fitting device for a fuel injection nozzle, characterized in that: include: A press-fitting platform, wherein the press-fitting platform is provided with a movable track; A cylinder head adjustment assembly, the cylinder head adjustment assembly comprises a fixing mechanism and a moving mechanism, the fixing mechanism is used to fix the cylinder head, and the moving mechanism is used to drive the cylinder head to move along the moving track after the cylinder head is fixed; A fuel injection nozzle adjustment assembly, the fuel injection nozzle adjustment assembly comprising a mounting plate, a rotating mechanism and a clamping mechanism, the rotating mechanism is used to drive the mounting plate to rotate, the clamping mechanism is arranged around the mounting plate, and the clamping mechanism is used to clamp the fuel injection nozzle; and A press-fitting assembly, the press-fitting assembly includes a press-fitting mechanism, a docking mechanism and a cooling mechanism. The press-fitting mechanism is arranged on the press-fitting table. The press-fitting mechanism is used to press-fit the clamped fuel injector. The docking mechanism is used to drive the cooling mechanism and the clamping mechanism to dock with each other when the press-fitting mechanism presses the fuel injector. The cooling mechanism is used to cool the press-fitting mechanism and the clamping mechanism.

2. The automatic press-fitting device for fuel injection nozzle according to claim 1, characterized in that: The fixing mechanism comprises a mounting block, a fixing push rod and a fixing block, wherein the mounting block is arranged on the moving track, the fixing push rod is arranged on the mounting block, and the fixing push rod is used to drive the fixing block to move and thereby fix the cylinder head to the mounting block.

3. The automatic press-fitting device for fuel injection nozzle according to claim 2, characterized in that: The moving mechanism comprises a moving push rod, which is arranged on the moving track. The moving push rod is connected to the mounting block and is used to drive the mounting block to move along the moving track.

4. The automatic press-fitting device for fuel injection nozzle according to claim 1, characterized in that: The rotating mechanism comprises a rotating motor, which is connected to the press-fitting platform and is used to drive the mounting plate to rotate.

5. The automatic press-fitting device for fuel injection nozzle according to claim 1, characterized in that: The mounting plate is provided with a plurality of mounting holes, the clamping mechanism is arranged in the mounting hole, the clamping mechanism comprises a guide block, a mounting ring, a reset spring, a clamping push rod and a clamping block, the guide block is arranged in the mounting hole, a guide groove is provided on the inner side wall of the guide block, the mounting ring is arranged in the guide groove, the reset spring is arranged inside the guide groove and is used to drive the mounting ring to reset, the clamping push rod is arranged around the mounting ring, and the clamping block is connected to the moving end of the clamping push rod.

6. The automatic press-fitting device for fuel injection nozzles according to claim 5, characterized in that: The press-fitting mechanism comprises a press-fitting push rod and a press-fitting head. The press-fitting push rod is arranged on the press-fitting platform and is used to drive the press-fitting head to move along the guide block.

7. The automatic press-fitting device for fuel injection nozzle according to claim 6, characterized in that: The press-fitting push rod is provided with a cooling chamber 1, and the cooling mechanism includes a cooling cylinder and a circulating pump. The cooling cylinder is arranged on the press-fitting table, and the circulating pump is arranged on the cooling cylinder. The circulating pump pumps the coolant in the cooling cylinder into the cooling chamber 1 for circulation.

8. The automatic press-fitting device for fuel injection nozzles according to claim 7, characterized in that: The clamping push rod is provided with a cooling chamber 2, and the docking mechanism includes a connecting pipe, a one-way valve, a magnetic locking valve, a magnetic suction block and a pressure valve. The connecting pipe is connected to the cooling chamber 1, and the one-way valve is arranged on the mounting ring. The one-way valve is connected to the cooling chamber 2 of different clamping push rods through a pipeline. The liquid outlet and liquid inlet of the connecting pipe are both provided with the magnetic locking valve, and the one-way valve is provided with the magnetic suction block corresponding to the magnetic locking valve arranged at the liquid outlet, and the pressure valve is also provided with the magnetic suction block corresponding to the magnetic locking valve arranged at the liquid inlet.

9. The automatic press-fitting device for fuel injection nozzles according to claim 8, characterized in that: The cooling mechanism also includes a cooling pipe, which is sequentially connected to each of the cooling chambers 2. The cooling pipe is provided with two circulation ports, which are respectively connected to a one-way valve and a pressure valve.

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