CN106141665A - Cylinder cover for diesel engine fuel injector and oil spout adapter automatic assembling machine and assembly method - Google Patents

Abstract

The invention discloses an automatic assembly machine and an assembly method for a fuel injector of a cylinder head of a diesel engine and a fuel injection nozzle. The center line of the installation hole of the injector coincides, the center line of the oil screw hole of the injector coincides with the center line of the positioning pin, and the horizontal servo electric cylinder works, the center line of the oil screw hole of the injector and the center line of the positioning pin are on the same axis; The fuel injector feeding mechanism drives the fuel injector downward to press into the fuel injector installation hole of the cylinder head; the vertical servo electric cylinder moves downward until the center line of the second pneumatic chuck is in the center of the fuel injection nozzle installation hole of the cylinder head line overlap, place the fuel injection nozzle on the second pneumatic chuck, and tighten the left end of the fuel injection nozzle into the installation hole of the fuel injection nozzle of the cylinder head; the invention realizes the automatic alignment of the oil screw hole of the fuel injector and the fuel injection connector And the automatic installation of fuel injector and fuel injection nozzle.

Description

Automatic assembly machine and assembly method for diesel engine cylinder head injector and injection nozzle

technical field

The invention relates to an automatic process equipment technology for a cylinder head of a diesel engine, in particular to an assembly machine for automatically installing a fuel injector and a fuel injection nozzle on the cylinder head of a diesel engine.

Background technique

As the last process in the product production process, assembly plays a vital role in the quality of the product. In the process of assembling a group of qualified products, if the assembly process is backward or improper, it often directly leads to a decline in product processing quality, and even rework and defective products due to unqualified assembly.

With reference to the structure of the diesel engine cylinder head 12 shown in Figure 1, there are two vertical cylinder head positioning holes on the cylinder head 12, which are respectively the cylinder head positioning hole 12-1 and the cylinder head positioning hole 12-2, and the fuel injection hole. Injector installation hole 12-3 and fuel injection nozzle installation hole 12-4, wherein the two cylinder head positioning holes 12-1, 12-2 are diagonally distributed on the left and right sides of the cylinder head 12; the fuel injector installation The hole 12-3 is also arranged vertically, located at the center of the cylinder head 12, between the two cylinder head positioning holes 12-1, 12-2; the fuel injection pipe installation hole 12-4 is arranged horizontally, and is installed with the fuel injector The holes 12-3 are perpendicular to each other, and the fuel injector installation hole 12-3 and the fuel injection pipe installation hole 12-4 communicate with each other. Referring to Figure 2, the fuel injector 10 is installed in the injector installation hole 12-3, the fuel injection pipe 11 is installed in the fuel injection nozzle installation hole 12-4, and one end of the fuel injection nozzle 11 is connected from the fuel injector 10 side. The oil screw hole 10-1 opened on the wall enters the fuel injector 10, and the fuel injector 11 is fixedly connected with the fuel injector 10 through the oil screw hole 10-1. The central axes are perpendicular and connected to each other.

When installing the fuel injector 10 and the fuel injection nozzle 11, it is necessary to ensure that the fuel injector 10 can be accurately coaxially matched with the outer spacer, and at the same time ensure that the oil screw hole 10-1 of the fuel injector 10 is aligned The installation direction of the fuel injector 11 is such that the fuel injector 11 can be directly coaxial with the oil screw hole 10-1 on the fuel injector 10 during assembly. At present, the installation of the fuel injector 10 and the fuel injection nozzle 11 is mainly completed by manual debugging and proofreading. The work efficiency is low, the assembly accuracy is low, and rework often occurs.

Contents of the invention

The object of the present invention is to propose an automatic assembly machine for a diesel engine cylinder head fuel injector and a fuel injection nozzle in order to overcome the shortcomings of low assembly efficiency and backward assembly process of the existing diesel engine cylinder head fuel injector and fuel injection nozzle. The assembly method can automatically install the fuel injector and the fuel injection nozzle on the cylinder head with high precision.

In order to achieve the above-mentioned purpose, the technical solution adopted by the automatic assembly machine of a diesel engine cylinder head injector and fuel injection nozzle in the present invention is: including a transmission device, the cylinder head is placed on the transmission device and moves left and right with the transmission device, and the transmission device Right above is the profile bracket, the middle of the left side of the profile bracket is the fuel injector feeding mechanism, and the middle of the right side is the fuel injection nozzle feeding mechanism; the fuel injector feeding mechanism is composed of a horizontal transmission device and a vertical feeding device , the lowermost end of the horizontal transmission device is fixedly connected to the profile bracket, the horizontal transmission device drives the vertical feeding device to move in the front and back direction, and the middle position of the horizontal transmission device is connected to the vertical feeding device that can move up and down; the vertical feeding device The bottom is provided with a first pneumatic chuck that can rotate; the fuel injection nozzle feeding mechanism includes a tooling backboard, a servo electric cylinder arranged horizontally on the left and right, a servo electric cylinder arranged vertically up and down, and a horizontal servo electric cylinder. The push rod is horizontal to the left and fixedly connected to the upper end of the tooling backboard through the push rod seat; the front and rear ends of the tooling backboard are respectively connected to the profile bracket through sliders and guide rails and can move horizontally along the profile bracket; the left side of the tooling backboard There are two parallel slide rails on the surface, the right end of the tooling frame is connected to the sliding rail through a slider, the upper left end of the tooling frame is fixedly connected to the V-shaped positioning device with a V-shaped opening facing the left direction, and the vertical servo electric cylinder pushes The rod is fixedly connected to the tooling frame downward; there is a horizontal servo motor at the right end of the tooling frame, the output shaft of the horizontal servo motor is horizontal to the left and connected to the second horizontal pneumatic chuck through a coupling and a bearing; the V-shaped positioning device includes a V Shaped block, spring and positioning pin, the center position of the V-shaped opening of V-shaped block is provided with horizontal positioning pin, is covered with spring on the positioning pin, and the external diameter of the left end part of positioning pin is equal to the inner diameter of the oil screw hole of fuel injector.

The technical solution adopted by the assembly method of the automatic assembly machine comprises the following steps:

A. The conveying device conveys the conveying plate carrying the cylinder head to the right until the cylinder head stops directly under the feeding mechanism of the fuel injector.

B. The horizontal transmission device drives the vertical feeding device to move forward, the operator puts the top of the injector into the first pneumatic chuck, and the horizontal transmission device drives the vertical feeding device to move backward until the fuel injector Stop when the center line coincides with the center line of the fuel injector installation hole of the cylinder head, and the vertical feeding device drives the fuel injector to move downward and stops on the left side of the fuel injection nozzle feeding mechanism;

C. The vertical servo electric cylinder works, driving the tooling frame to move down until the center line of the oil screw hole of the injector coincides with the center line of the positioning pin of the V-shaped positioning device, and the horizontal servo electric cylinder works to push the tooling frame towards the fuel injection Move in the direction of the injector until the V-shaped opening of the V-shaped positioning device clamps the injector and the centerline of the oil screw hole of the injector is on the same axis as the centerline of the positioning pin;

D. The horizontal servo electric cylinder drives the tooling frame to reset to the right, the vertical servo electric cylinder drives the tooling frame up to the initial position, and the fuel injector feeding mechanism drives the fuel injector to press down into the fuel injector installation hole of the cylinder head ;

E. The vertical servo electric cylinder drives the tooling frame to move downward until the centerline of the second pneumatic chuck coincides with the centerline of the installation hole of the fuel injection nozzle of the cylinder head. The operator places the fuel injection nozzle on the second pneumatic chuck. The horizontal servo electric cylinder drives the tooling frame to move to the left, the servo motor drives the fuel injection nozzle to rotate, and the left end of the fuel injection nozzle is screwed into the installation hole of the cylinder head.

The invention can realize the automatic alignment of the oil screw hole of the fuel injector and the fuel injection nozzle and the automatic installation of the fuel injector and the fuel nozzle nozzle. The whole assembly machine has high degree of automation, high assembly efficiency, reliable structure, low labor intensity, and improved The invention has the advantages of safety and production efficiency, and the invention is also applicable to the automatic installation of fuel injectors and fuel injection nozzles on various types of cylinder heads.

Description of drawings

Fig. 1 is the enlarged schematic diagram of the three-dimensional structure of the diesel engine cylinder head;

Fig. 2 is an enlarged front view schematic diagram of the assembly structure of the fuel injector, the fuel injection nozzle and the cylinder head in Fig. 1;

Fig. 3 is the overall structure schematic diagram of the automatic assembly machine of a kind of diesel engine cylinder head fuel injector and fuel injection nozzle of the present invention;

FIG. 4 is an enlarged schematic view of the structure of the transmission device 1 in FIG. 3;

Fig. 5 is the enlarged schematic view of the structure of the transmission plate 1-2 in Fig. 4;

Fig. 6 is an enlarged schematic diagram of the structure of the fuel injector feeding mechanism, the fuel injection nozzle feeding mechanism and the profile bracket in Fig. 2;

Fig. 7 is an enlarged schematic diagram of the structure of the fuel injector feeding mechanism in Fig. 6;

FIG. 8 is an enlarged schematic diagram of the rear view structure of the horizontal transfer device 22-1 in FIG. 7;

FIG. 9 is an enlarged schematic view of the structure of the upper part of the vertical feeding device 22-2 in FIG. 7;

FIG. 10 is an enlarged schematic diagram of the installation structure of the lower part of the vertical feeding device 22-2 in FIG. 7;

Fig. 11 is an enlarged schematic diagram of the structure of the fuel injection pipe feeding mechanism in Fig. 3;

Fig. 12 is an enlarged schematic diagram of the structure of the upper part of the fuel injection pipe feeding mechanism in Fig. 11;

Fig. 13 is an enlarged schematic diagram of the structure on the right side of the tooling backboard in Fig. 12;

Fig. 14 is an enlarged schematic diagram of the structure on the left side of the tooling backboard in Fig. 12;

Fig. 15 is an enlarged schematic diagram of the structure of the lower part of the fuel injection pipe feeding mechanism in Fig. 11;

Fig. 16 is an enlarged schematic view of the top view structure of the V-shaped positioning device in Fig. 15 when it is in an initial non-working state;

Fig. 17 is an enlarged schematic view of the top view structure of the V-shaped positioning device in Fig. 15 when it is in working state;

Fig. 18 is an enlarged schematic diagram of the working state of the fuel injection pipe feeding mechanism when the fuel injector in Fig. 3 is feeding;

Fig. 19 is an enlarged schematic diagram of the automatic correction and installation of the oil screw hole of the injector in Fig. 3;

Fig. 20 is an enlarged schematic diagram of the working state when the fuel injection nozzle in Fig. 3 is loaded;

Fig. 21 is an enlarged schematic diagram of the working state of the automatic installation of the fuel injection nozzle in Fig. 3 .

In the figure: 1. Transmission device; 1-1. Transmission platform; 1-2. Transmission plate; 1-3. Position sensor; 1-4. Sensor fixing plate; 1-2-1b. Locating pin;

2. Tooling table; 10. Fuel injector; 10-1. Oil screw hole; 11. Fuel injection connection; 12. Cylinder head; 12-1, 12-2. Cylinder head positioning hole; 12-3. Fuel injector Mounting hole; 12-4. Fuel injection nozzle mounting hole; 12-1, 12-2. Cylinder head positioning hole;

22. Fuel injector feeding mechanism; 22-1. Horizontal transmission device; 22-1-1a, 22-1-1b. Support plate; 22-1-2. Fixed plate; 22-1-3. Rodless cylinder ; 22-2. Vertical feeding device; 22-2-1. Support seat; 22-2-2. Servo motor; 22-2-3a, 22-2-3b. Optical axis; 22-2-4. Lead screw; 22-2-5. slider; 22-2-6. push rod; 22-2-7. push rod seat assembly; 22-2-8. support frame; 22-2-9. servo motor; 22-2-10. Coupling; 22-2-11. Bearing; 22-2-12. Pneumatic chuck;

31. Fuel injection nozzle feeding mechanism; 31-4-1. Horizontal servo electric cylinder; 31-4-2. Support seat; 31-4-3. Push rod; 31-4-4. Push rod seat; 31- 4-5. Tooling back plate; 31-4-6. Vertical servo electric cylinder; 31-4-7. Support seat; 31-4-8. Push rod; 31-4-5a. Right support plate; 31-4 -5b. Rear support; 31-4-5b. Front support; 31-4-5d. Left support plate; 31-4-9a, 31-4-9b. Slide rail; 31-4-10a, 31- 4-10b. Slider; 31-5-1. Tooling frame; 31-5-2. Servo motor; 31-5-3. Fixed frame; 31-5-4. Coupling; 31-5-5. Bearing; 31-5-6. Pneumatic chuck; 31-5-7. V-shaped positioning device; 31-5-7a. Fixing seat; 31-5-7b. V-shaped block; 31-5-7c. Spring; 31-5-7d. Locating pin; 31-5-8. Fixing seat;

44 profile bracket.

detailed description

Referring to Fig. 3, an automatic assembly machine for a diesel engine cylinder head injector and fuel injection nozzle according to the present invention includes a conveying device 1, a tooling table 2, a fuel injector feeding mechanism 22, a fuel injection nozzle feeding mechanism 31 and profiles The bracket 44 and the tooling platform 2 are fixed on the ground. The transmission device 1 is arranged in the middle of the upper surface of the tooling platform 2 . The cylinder head 12 is placed on the transmission device 1 and can move left and right along with the transmission device 1 . A profile support 44 in the shape of a cuboid is installed at the position on the right side above the tooling table 2, the profile support 44 is located directly above the conveying device 1, and the fuel injector feeding mechanism 22 is installed on the left side of the profile support 44, and the right side of the profile support 44 The fuel injection nozzle feeding mechanism 31 is installed at the side position. The fuel injector 10 and the fuel injection connecting pipe 11 to be assembled are placed on the tooling table 2 and near the front side of the profile support 44 .

Referring to the structure of the transmission device 1 shown in Figure 4, the transmission device 1 comprises a transmission platform 1-1, a transmission plate 1-2, a position sensor 1-3, a sensor fixing plate 1-4 and a workbench 1-5, the transmission platform 1 -1 is arranged horizontally in the left and right directions, and a horizontal transmission plate 1-2 is installed at the center of the transmission platform 1-1. The transmission plate 1-2 can move left and right along the transmission platform 1-1, and the transmission plate 1-2 Cylinder head 12 is placed on it, and the sensor fixed plate 1-4 is fixedly connected to the right side of the transmission platform 1-1, and the position sensor 1-3 is set on the middle position of the sensor fixed plate 1-4. The transmission plate 1-2 and the cylinder head 12 move from the initial position at the left end to the position at the right end along with the transmission movement of the transmission table 1-1, until they stop when they touch the position sensor 1-3. The right front side of the transfer platform 1-1 is a workbench 1-5 placed on the ground, and the fuel injector 10 and the fuel injection pipe 11 to be assembled are placed on the workbench 1-5.

Referring to the structure of the transmission plate 1-2 shown in Figure 5, the shape of the transmission plate 1-2 is rectangular, and there are positioning pins 1-2-1a and 1-2-1b on it, and these two positioning pins are diagonally opposite The corners are distributed on the transmission plate 1-2, and the size is exactly the same, matching with the two cylinder head positioning holes 12-1 and 12-2 on the cylinder head 12, and the cylinder head 12 is placed on the transmission plate 1-2 , the cylinder head 12 is hoisted to the transmission plate 1-2 by the sling, and the two positioning pins 1-2 on the transmission plate 1-2 pass through the two cylinder head positioning holes 12-1, 12-2 and the two positioning pins 1-2 on the transmission plate 1-2 -1a, 1-2-1b match to achieve positioning.

Referring to Fig. 6, the profile bracket 44 is installed on the right side of the conveying device 1, the fuel injector feeding mechanism 22 is fixedly installed in the middle of a profile on the left side of the profile bracket 44, and the fuel injection nozzle feeding mechanism 31 is installed In the middle position on the right side of profile support 33.

Referring to Fig. 7, the injector feeding mechanism 22 is composed of a horizontal conveying device 22-1 and a vertical feeding device 22-2. The middle position of conveying device 22-1 connects vertical feeding device 22-2, and vertical feeding device 22-2 can move up and down, and when vertical feeding device 22 is working, its bottom end is equipped with Oiler 10.

Referring to the horizontal transfer device 22-1 shown in FIG. 8, it includes a support plate 22-1-1a, a support plate 22-1-1b, a fixed plate 22-1-2, and a rodless cylinder 22-1-3. The support plate 22-1-1a has the same structure as the support plate 22-1-1b, arranged front and rear, its bottom is fixedly connected to the profile bracket 44, the top of the support plate 22-1-1a and the support plate 22-1-1b are right A rectangular fixed plate 22-1-2 is fixedly installed on the side, and a rodless cylinder 22-1-3 is fixedly installed on the fixed plate 22-1-2, and the rodless cylinder 22-1-3 is connected to a vertical feeding device by moving a slider 22. Drive the vertical feeding device 22 to make a horizontal movement back and forth in the front and rear directions.

Referring to the vertical feeding device 22 shown in Figure 9, the upper part of the vertical feeding device 22 includes a support seat 22-2-1, a servo motor 22-2-2, an optical axis 22-2-3a, an optical axis 22- 2-3b, leading screw 22-2-4, slide block 22-2-5, push rod 22-2-6 and push rod seat assembly 22-2-7. The support base 22-2-1 is fixedly installed on the moving slider of the rodless cylinder 22-1-3 in Fig. 8, is slidably connected with the rodless cylinder 22-1-3, and is perpendicular to the ground, and the servo motor 22-2 -2 is fixedly installed on the top of the support base 22-2-1, the output shaft of the servo motor 22-2-2 is vertically downward, and the lead screw 22-2-4 is connected coaxially, and the lead screw 22-2-4 is driven to do For forward and reverse movement, the two optical axes 22-2-3a, 22-2-3b are parallel to the lead screw 22-2-4, and both ends of the two optical axes are fixedly connected to the support seat 22-2-1. Jointly connect a slide block 22-2-5 on the middle section of the leading screw 22-2-4, two optical axes 22-2-3a, 22-2-3b, and the top of the push rod 22-2-6 is fixedly connected A push rod seat assembly 22-2-7 is installed at the bottom end of the slider 22-2-5 and the bottom end of the push rod 22-2-6. When the servo motor 22-2-2 was working, it drove the lead screw 22-2-4 to rotate, and the positive and negative rotation of the lead screw 22-2-4 drove the slide block 22-2-5, the push rod 22-2-6 and the push rod 22-2-6. The rod seat assembly 22-2-7 moves up and down in the vertical direction.

Refer to the structure of the bottommost push rod seat assembly 22-2-7 of the vertical feeding device 22 shown in Figure 10, including a support frame 22-2-8, a servo motor 22-2-9, and a coupling 22-2 -10 and pneumatic chuck 22-2-12; wherein the upper end of the support frame 22-2-8 is fixedly installed on the bottom end of the push rod 22-2-6, and the servo motor 22-2-9 is installed on the support frame 22- 2-8 near the top position, the output shaft of the servo motor 22-2-9 is vertically downward, and the output shaft of the servo motor 22-2-9 is connected to the upper end of the bearing 22-2-11 through the shaft coupling 22-2-10 , the lower end of the bearing 22-2-11 is connected to the pneumatic chuck 22-2-12, and the upper end of the pneumatic chuck 22-2-12 is fixedly installed on the bottom end of the support frame 22-2-8. The rotation of the output shaft of the servo motor 22-2-9 drives the shaft coupling 22-2-10, the bearing 22-2-11 and the pneumatic chuck 22-2-12 to rotate, and the bottom of the pneumatic chuck 22-2-12 Comes with a pneumatic clamping element, mainly used for clamping the top of the injector 10, the injector 10 can be on the pneumatic chuck 22-2-12 and rotate around the central axis of the pneumatic chuck 22-2-12 sports.

Referring to Fig. 11 and Fig. 12, the fuel injection nozzle feeding mechanism 31 is installed in the middle of the right side of the profile bracket 44. The upper part of the fuel injection nozzle feeding mechanism 31 is a servo transmission device, and the lower part is a positioning and tightening device. . The servo transmission device includes a horizontal servo electric cylinder 31-4-1, a support seat 31-4-2, a push rod 31-4-3, a push rod seat 31-4-4, a tooling back plate 31-4-5, and a vertical servo The electric cylinder 31-4-6, the support seat 31-4-7 and the push rod 31-4-8, wherein the horizontal servo electric cylinder 31-4-1 is arranged horizontally on the left and right, and is fixedly installed on the support seat 31-4-2, The support seat 31-4-2 is fixedly installed on the profile support 44, the push rod 31-4-3 of the servo electric cylinder 31-4-1 is horizontal to the left, connected to the right end of the push rod seat 31-4-4, and the push rod seat The left end of 31-4-4 is fixedly connected to the upper end of the tooling backboard 31-4-5, and the upper end of the tooling backboard 31-4-5 is also fixedly connected to the support seat 31-4-7. The servo electric cylinder 31-4-6 is vertically arranged up and down, installed on the support base 31-4-7, the push rod 31-4-8 of the vertical servo electric cylinder 31-4-6 is vertically downward, and the tooling backboard 31-4 The front and rear ends of -5 are respectively fixedly installed on the profile support 44 through the slider and the guide rail structure, and move horizontally along the profile support 44 left and right.

Referring to the tooling backboard 31-4-5 shown in Figure 13, it includes a right support plate 31-4-5a, a rear support 31-4-5b, a front support 31-4-5b and a left support plate 31-4- 5d, the right support plate 31-4-5a is rectangular, fixedly connected to the left end of the push rod seat 31-4-4, the rear support 31-4-5b and the front support 31-4-5b are used to place the entire tooling backboard 31-4-5 is slidingly connected to the profile support 44, and the left support plate 31-4-5d is L-shaped, and its upper part is used to install the support seat 31-4-7, and the push of the vertical servo electric cylinder 31-4-6 The rod 31-4-8 passes through the hole of the left support plate 31-4-5d and downwards.

As shown in Figure 14, two parallel slide rails are fixedly installed on the left side of the tooling backboard 31-4-5, which are respectively slide rail 31-4-9a and slide rail 31-4-9b, slide rail 31- Slide block 31-4-10a and slide block 31-4-10b are respectively installed on 4-9a and slide rail 1-4-9b, are used for fixing and sliding the positioning screwing device of the lower end portion of feeding mechanism 31 connected to fuel injection pipe.

Referring to the structure of the positioning and tightening device at the lower end of the fuel injection pipe feeding mechanism 31 shown in Figure 15, it includes a tooling frame 31-5-1, a servo motor 31-5-2, a fixed frame 31-5-3, and a shaft coupling Device 31-5-4, bearing 31-5-5, pneumatic chuck 31-5-6, V-shaped positioning device 31-5-7 and fixed seat 31-5-8. Wherein, the upper end on the left side of the tooling frame 31-5-1 is fixedly installed with a V-shaped positioning device 31-5-7, and the V-shaped opening of the positioning device 31-5-7 faces the right left direction, and the tooling frame 31-5-1 The right end is fixedly connected to the slide block 22-4-10a and the slide block 22-4-10a in the upper part, and a fixed seat 31-5-8 is installed near the right end, and the tooling frame 31-5-1 passes through the fixed seat at the right end 31-5-8 is fixedly connected to the push rod 31-4-8 of the vertical servo electric cylinder 31-4-6 in Figure 12, and the tooling frame 31-5-1 is driven up and down by the vertical servo electric cylinder 31-4-6 sports. Connect the fixed mount 31-5-3 at the right end of the tooling frame 31-5-1, the servomotor 31-5-2 of level is fixedly installed on the right end of the fixed mount 31-5-3, the output shaft of the servomotor 31-5-2 Horizontal to the left, connect the right end of the bearing 31-5-5 through the coupling 31-5-4, the left end of the bearing 31-5-5 is connected to the horizontal pneumatic chuck 31-5-6, and the pneumatic chuck 31-5- 6 is used to clamp the oil inlet end of the fuel injection connecting pipe 11.

Referring to the V-shaped positioning device 31-5-7 shown in Figure 16, the V-shaped positioning device 31-5-7 is in the initial non-working state, and the V-shaped positioning device 31-5-7 includes a fixed seat 31-5-7a, a V Shaped block 31-5-7b, spring 31-5-7c and positioning pin 31-5-7d, the right end of fixed seat 31-5-7a is fixedly connected to the leftmost end of tooling frame 31-5-1, fixed seat 41-5 The left end of -7a is fixedly installed V-shaped block 31-5-7b, and the opening of V-shaped block 31-5-7b faces to the left direction, and the center position of the V-shaped opening of V-shaped block 31-5-7b is provided with positioning pin 31-5-7d, the positioning pin 31-5-7d is covered with a spring 31-5-7c, and the right end part of the positioning pin 31-5-7d stretches in the shaft hole of the V-shaped block 31-5-7b, and the left end part On the left side of the V-shaped block 31-5-7b, the outer diameter of the left end shaft of the positioning pin 31-5-7d is equal to the inner diameter of the oil screw hole 10-1 of the injector 10.

See Figure 17: the V-shaped positioning device 31-5-7 is in the working state, and the V-shaped positioning device 31-5-7 moves to the left until the positioning pin 31-5-7d and the oil screw hole 10- 1 contact, the spring 31-5-7c is compressed, and the positioning pin 31-5-7d moves to the right relative to the V-shaped block 31-5-7b until the positioning pin 31-5-7d enters the oil screw hole 10 of the injector 10 -1, at this time, the positioning pin 31-5-7d moves to the left to return to the initial state, and the positioning of the fuel injector 10 is completed.

The working process of the present invention is the automatic delivery of the fuel injector 10 and the fuel injection adapter 11 to the assembly station, the loading of the fuel injector 10, the automatic correction of the oil screw hole 10-1 of the fuel injector 10, and the fuel injection adapter. 11 automatic installation, as follows:

Referring to Fig. 18, Fig. 1, Fig. 3 and Fig. 9, the transmission plate 1-2 is at the left end position of the transmission device 1 in the initial state, and the transmission device 1 will transmit the transmission plate 1-2 carrying the cylinder head 12 to the right, Until the right end of the transfer plate 1-2 contacts the position sensor 1-3 and stops moving, the cylinder head 12 is directly below the fuel injector feeding mechanism 22, and the cylinder head 12 is automatically transported to the assembly station.

The horizontal conveying device 22-1 in the fuel injector feeding mechanism 22 works, and the rodless cylinder 22-1-3 drives the vertical feeding device 22-2 to move forward until it reaches the maximum stroke of the horizontal conveying device 22-1 , the operator places the fuel injector 10 into the pneumatic chuck 22-2-11 at the lower end of the vertical feeding device 22-2 to realize the feeding of the fuel injector 10. After completing the feeding work of the fuel injector 10, the horizontal conveying device 22-1 drives the vertical feeding device 22-2 to move horizontally backward until the centerline of the fuel injector 10 and the fuel injector of the cylinder head 12 are reached. When the position where the center line of the installation hole 12-3 coincides, the movement stops. At this time, the servo motor 22-2-2 of the vertical feeding device 22-2 starts to work, driving the fuel injector 10 to move downward, and the fuel injector 10 follows the The push rod 22-2-6 moves downward for a certain distance and stops, waiting for the calibration of the oil screw hole 10-1 of the fuel injector 10.

Referring to Fig. 19, the fuel injector 10 moves downward for a certain distance with the push rod 22-2-6 and stops at the left side of the fuel injection nozzle feeding mechanism 31, and the servo motor 22-2 of the fuel injector feeding mechanism 22 -9 works, driving the pneumatic chuck 22-2-12 and the fuel injector 10 to rotate in the horizontal plane, the servo electric cylinder 31-4-6 of the fuel injection connection feeding mechanism 31 starts to work and the push rod 31-4 -7 moves downward, by setting the working stroke of the push rod 31-4-7 of the servo electric cylinder 31-4-6, the tooling frame 31-5-1 moves downward with the push rod 31-4-7 Until the center line of the oil screw hole 10-1 of the injector 10 coincides with the center line of the positioning pin 31-5-7d of the V-shaped positioning device 31-5-7 in the same horizontal plane, the push rod 31-4 -7 reaches the set working stroke and stops working. At this time, the horizontal servo electric cylinder 31-4-1 starts to work and the push rod 31-4-2 pushes the tooling backboard 31-4-5 and the tooling frame 31 on the left. -5-1 moves toward the fuel injector 10 until the V-shaped opening of the V-shaped positioning device 31-5-7 clamps the upper part of the fuel injector 10 and stops moving, and the V-shaped positioning device 31-5-7 The positioning pin 31-5-7d moves to the right relative to the original position until the center line of the oil screw hole 10-1 of the rotating injector 10 is on the same axis as the center line of the positioning pin 31-5-7d. Under the thrust of the spring 31-5-7c, the positioning pin 31-5-7d moves to the left and enters the oil screw hole 10-1. At this time, the servo motor 31-4-6 stops moving, and the oil screw of the injector 10 is completed. Automatic correction of hole 10-1.

After the oil screw hole 10-1 of the injector 10 is automatically corrected, the push rod 31-4-2 of the horizontal servo electric cylinder 31-4-1 drives the tooling frame 31-5-1 to reset, and moves rightward to the initial position. Then the push rod 31-4-7 of the servo electric cylinder 31-4-6 drives the tooling frame 31-5-1 to move upward to the initial position. At this time, the injector feeding mechanism 22 presses the injector 10 downward and The cylinder head 12 corresponds to the fuel injector installation hole 12-3, and moves upward to the initial state, thereby completing the automatic calibration and installation of the fuel injector 10.

Referring to Fig. 2, Fig. 3, Fig. 20 and Fig. 21, after the fuel injector 10 is installed in the fuel injector mounting hole 12-3 of the cylinder head 12, the servo electric cylinder in the feeding mechanism 31 is connected by setting the fuel injector The working stroke of the push rod 31-4-7 of 31-4-6, the push rod 31-4-7 of the servo electric cylinder 31-4-6 drives the tooling frame 31-5-1 to move downward until the pneumatic chuck 31 The center line of -5-6 coincides with the center line of the fuel injection nozzle installation hole 12-4 of the cylinder head 12 in the horizontal plane. The oil injection connecting pipe 11 is placed on the pneumatic chuck 31-5-6, then the horizontal servo electric cylinder 31-4-1 and the servo motor 31-5-2 start to work, and the push rod 31 of the servo electric cylinder 31-4-1 -4-2 drives the tooling frame 31-5-1 equipped with the fuel injection nozzle 11 to move to the left, the servo motor 31-5-2 drives the fuel injection nozzle 11 to rotate, the servo electric cylinder 31-4-1 and the servo motor 31-5-2 work together until the threaded part at the front end of the fuel injection connector 11 is screwed into the fuel injection connector installation hole 12-4 of the cylinder head 12, and at this time the leftmost end of the fuel injection connector 11 enters the fuel injector 10 In the oil screw hole 10-1, the vertical high-precision installation of the fuel injector 10 and the fuel injection nozzle 11 is finally realized.

Claims (6)

1. An automatic assembly machine for diesel engine cylinder head injectors and fuel injection nozzles, including a transmission device (1), the cylinder head is placed on the transmission device (1) and moves left and right with the transmission device (1), its characteristics are : just above the transmission device (1) is the profile support (44), the middle of the left side of the profile support (44) is the fuel injector feeding mechanism (22), and the middle of the right side is the fuel injection nozzle feeding mechanism (31); The fuel injector feeding mechanism (22) is composed of a horizontal conveying device (22-1) and a vertical feeding device (22-2), and the bottom end of the horizontal conveying device (22-1) is fixedly connected to the profile bracket (44) , the horizontal conveying device (22-1) drives the vertical feeding device (22) to move forward and backward, and the middle position of the horizontal conveying device (22-1) is connected to the vertical feeding device (22-2) which can move up and down ; The bottom of the vertical feeding device (22-2) is provided with a first pneumatic chuck (22-2-12) that can rotate; -4-5), horizontally arranged servo electric cylinders (31-4-1), vertically arranged servo electric cylinders (31-4-6), horizontal servo electric cylinders (31-4-1) The rod is horizontal to the left and is fixedly connected to the upper end of the tooling backboard (31-4-5) through the push rod seat (31-4-4); the front and rear ends of the tooling backboard (31-4-5) pass through the slider and the The guide rail is connected to the profile support (44) and can move horizontally from side to side along the profile support (44); two parallel slide rails are set on the left side of the tooling backboard (31-4-5), and the tooling frame (31-5- 1) The right end of the tooling frame (31-5-1) is connected to the slide rail through the slider, and the upper left end of the tooling frame (31-5-1) is fixedly connected to the V-shaped positioning device (31-5-7) with the V-shaped opening facing the left direction. The vertical servo The push rod of the electric cylinder (31-4-6) is fixedly connected to the tooling frame (31-5-1) downward; the right end of the tooling frame (31-5-1) has a horizontal servo motor (31-5-2), The output shaft of the horizontal servo motor (31-5-2) is horizontal to the left and is connected to the horizontal second pneumatic chuck (31-5) through the coupling (31-5-4) and the bearing (31-5-5). -6); V-shaped positioning device (31-5-7) includes V-shaped block (31-5-7b), spring (31-5-7c) and positioning pin (31-5-7d), V-shaped block ( 31-5-7b) is provided with a horizontal positioning pin (31-5-7d) at the center of the V-shaped opening, the positioning pin (31-5-7d) is covered with a spring (31-5-7c), and the positioning pin ( 31-5-7d) The outer diameter of the left end part is equal to the inner diameter of the oil screw hole of the injector. 2. The automatic assembly machine for diesel engine cylinder head injectors and fuel injection nozzles according to claim 1, characterized in that: the transmission device (1) includes a transmission table (1-1), a transmission plate (1-2) and a position The sensor (1-3), the transfer table (1-1) is arranged horizontally in the left and right directions, and the center of the transfer table (1-1) is provided with a horizontal transfer plate (1-2), on which the transfer plate (1-2) There are two positioning pins matched with the two cylinder head positioning holes on the cylinder head, and a position sensor (1-3) is provided on the right side of the transmission table (1-1). 3. The automatic assembly machine for diesel engine cylinder head injectors and fuel injection nozzles according to claim 1, characterized in that: the horizontal transmission device (22-1) includes two support plates, and the bottoms of the two support plates are fixedly connected The profile bracket (44), the top of the two support plates is a rodless cylinder (22-1-3), and the rodless cylinder (22-1-3) is connected to the vertical feeding device (22) by moving the slider to drive the vertical The feeding device (22) moves horizontally back and forth. 4. The automatic assembly machine for diesel engine cylinder head injectors and fuel injection nozzles according to claim 3, characterized in that: the vertical feeding device (22) includes a sliding connection with the rodless cylinder (22-1-3) The support base (22-2-1), the top of the support base (22-2-1) has the first servo motor (22-2-2), the output shaft of the first servo motor (22-2-2) is vertical Connect the lead screw (22-2-4) down and coaxially, the two optical axes are parallel to the lead screw (22-2-4), and the slider (22-2-5) is connected to the lead screw (22-2- 4) On the middle section of the two optical axes, the top of the push rod (22-2-6) is fixedly connected to the bottom end of the slider (22-2-5), and the bottom end is provided with a push rod seat assembly (22-2 -7). 5. The automatic assembly machine for the diesel engine cylinder head injector and fuel injection nozzle according to claim 4, characterized in that: the push rod seat assembly (22-2-7) includes a support frame (22-2-8), supporting The upper end of the frame (22-2-8) is fixedly connected to the bottom end of the push rod (22-2-6), and the support frame (22-2-8) is connected to the second servo motor (22-2-9), and the servo motor (22 -2-9) The output shaft is vertically downward and connected to the first pneumatic chuck (22-2-12) through the coupling (22-2-10) and the bearing (22-2-11). 6. An assembly method of an automatic assembly machine of a diesel engine cylinder head injector and a fuel injection nozzle as claimed in claim 1, characterized in that it comprises the following steps: A. The conveying device (1) conveys the conveying plate (1-2) carrying the cylinder head to the right until the cylinder head stops directly under the injector feeding mechanism (22), B. The horizontal conveying device (22-1) drives the vertical feeding device (22-2) to move forward, and the operator puts the top of the injector into the first pneumatic chuck (22-2-12), horizontally The transmission device (22-1) drives the vertical feeding device (22-2) to move backward until the center line of the fuel injector coincides with the center line of the fuel injector mounting hole of the cylinder head and stops. The vertical feeding device (22-2) Drive the fuel injector to move downward and stop at the left side of the fuel injection nozzle feeding mechanism (31); C. The vertical servo electric cylinder (31-4-6) works, driving the tooling frame (31-5-1) to move down until the center line of the oil screw hole of the injector and the V-shaped positioning device (31-5-7 ) coincides with the center lines of the positioning pins (31-5-7d), and the horizontal servo electric cylinder (31-4-1) works to push the tooling frame (31-5-1) toward the direction of the injector until V-shaped The V-shaped opening of the positioning device (31-5-7) clamps the fuel injector and the centerline of the oil screw hole of the fuel injector is on the same axis as the centerline of the positioning pin (31-5-7d); D. The horizontal servo electric cylinder (31-4-1) drives the tooling frame (31-5-1) to reset to the right, and the vertical servo electric cylinder (31-4-6) drives the tooling frame (31-5-1) Up to the initial position, the fuel injector feeding mechanism (22) drives the fuel injector to press down into the fuel injector installation hole of the cylinder head; E. The vertical servo electric cylinder (31-4-6) drives the tooling frame (31-5-1) to move down until the center line of the second pneumatic chuck (31-5-6) is installed with the fuel injection nozzle of the cylinder head The center lines of the holes coincide, the operator places the fuel injection nozzle (11) on the second pneumatic chuck (31-5-6), and the horizontal servo electric cylinder (31-4-1) drives the tooling frame (31-5 -1) Move to the left, the servo motor (31-5-2) drives the fuel injection nozzle to rotate, and screw the left end of the fuel injection nozzle into the installation hole of the cylinder head.