An automatic assembling machine for marine diesel engine cylinder head indicator valve and safety valve

Abstract

The application discloses an automatic assembling machine for a marine diesel engine cylinder head indicator valve and safety valve, which comprises a workbench, a conveying device, a jacking mechanism arranged above the conveying device, a group of clamping and overturning mechanisms symmetrically arranged on both sides of the conveying device, a guiding and clamping mechanism arranged above the jacking mechanism, a movable automatic mounting mechanism and an automatic tightening mechanism arranged above the guiding and clamping mechanism; the clamping and overturning mechanism clamps and overturns the lifted marine diesel engine cylinder head, the guiding and clamping mechanism carries the indicator valve or the safety valve, and after the diesel engine cylinder head is overturned, the position is adjusted and a guiding column on the guiding and clamping mechanism is inserted into a cylinder head hole of the diesel engine cylinder head to realize guiding and positioning; the automatic mounting mechanism mounts the indicator valve and the safety valve on the marine diesel engine cylinder head, and the automatic tightening mechanism is tightened. The application can solve the problem that the traditional diesel engine cylinder head indicator valve and safety valve assembling process is completely manually participated, and automatic assembling is realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of automatic assembly production of marine diesel engines, and particularly relates to an automatic assembly machine for indicator valves and safety valves of cylinder heads of marine diesel engines. BACKGROUND

[0002] In large-scale automatic production of diesel engines, automatic assembly of indicator valves and safety valves of cylinder heads is essential, which can reduce human participation in the production process, reduce the labor intensity of workers, and improve production efficiency, assembly quality and overall performance. Figure 1 and Figure 2 As shown in the structure of the diesel engine cylinder head. The cylinder head A and the cylinder head B have upper and lower through holes in the four corners, and the left and right side walls of the cylinder head A are each provided with four outwardly protruding cylindrical side wall ports A-1, and the side wall ports A-1 on the left and right side walls are left-right symmetrical, and the left and right side walls of the cylinder head B are each provided with four cylindrical side wall ports B-1, and the side wall ports B-1 on the left and right side walls are left-right symmetrical, the indicator valve A-3 and the safety valve B-2 are irregular shapes, the indicator valve A-3 and the safety valve B-2 are installed on the side of the cylinder head, and the screw holes are reserved corresponding to the cylinder head.

[0003] At present, in the assembly process of large-scale automatic production of diesel engines, the assembly of cylinder head indicator valve A-3 and cylinder head safety valve B-2 still completely depends on manual assembly, which is through manual first taking down the cylinder head A and the cylinder head B on the production line, then manually turning over 90 degrees, and manually assembling the cylinder head indicator valve A-3 or the cylinder head safety valve B-2 into the corresponding hole of the cylinder head on the side A-4, then manually tightening the screw of the indicator valve A-3 and the safety valve B, and finally turning over 90 degrees of the cylinder head to return to the original position. This assembly method completely relies on manual operation, and the production efficiency is low and the assembly quality cannot be guaranteed. SUMMARY

[0004] The present application is an automatic assembly machine for indicator valves and safety valves of cylinder heads of marine diesel engines, which can solve the problem of complete manual participation in the assembly process of traditional diesel engine cylinder head indicator valves and safety valves, and realize automatic assembly.

[0005] Technical scheme: The automatic assembly machine for indicator valves and safety valves of cylinder heads of marine diesel engines comprises a workbench, a conveying device arranged on the workbench, a jacking mechanism arranged above the conveying device for realizing longitudinal movement of the cylinder head of the marine diesel engine, a group of clamping and turning mechanisms symmetrically arranged on both sides of the conveying device and fixed on the workbench, a guide clamping mechanism arranged above the jacking mechanism, and an automatic mounting mechanism and an automatic tightening mechanism movably arranged above the guide clamping mechanism through a three-axis moving platform.

[0006] The clamping and overturning mechanism is used for clamping and overturning the lifted marine diesel engine cylinder head, the guiding and clamping mechanism is used for carrying the indicator valve or the safety valve, and after the diesel engine cylinder head is overturned, the guiding column thereon is inserted into the cylinder head hole of the diesel engine cylinder head to realize guiding and positioning, and the automatic installation mechanism carrying the indicator valve and the safety valve is used for installing the indicator valve and the safety valve on the marine diesel engine cylinder head and tightening through the automatic tightening mechanism.

[0007] Further, the jacking mechanism comprises a third lifting cylinder, a third fixed plate is vertically arranged at the output end of the third lifting cylinder, and more than one pin is arranged on the upper surface of the third fixed plate; the marine diesel engine cylinder head is placed on a tray, a pin hole is formed on the tray, the pin corresponds to the pin hole, and the third lifting cylinder drives the tray to vertically move up and down when the third lifting cylinder is actuated.

[0008] Further, the clamping and overturning mechanism comprises a second support frame installed on the workbench, a semi-closed guide rail placed above the second support frame, a sliding block slidingly connected in the semi-closed guide rail, and a second rotary motor fixedly installed on the upper surface of the sliding block.

[0009] The sliding block moves along the semi-closed guide rail to drive the second rotary motor to horizontally move forward and backward.

[0010] The second rotary motor is connected with a clamping disc through a clamping arm, a plurality of pins matched with the cylinder head sidewall valve port are arranged on the clamping disc; the clamping disc moves with the second rotary motor, when the clamping disc is close to the marine diesel engine cylinder head, the pins are inserted into the cylinder head sidewall valve port of the marine diesel engine cylinder head, and the two clamping and overturning mechanisms can clamp and overturn the marine diesel engine cylinder head.

[0011] Further, the guiding and clamping mechanism comprises closed guide rails and sliding block guide rails symmetrically distributed on both sides of the conveying device, a support plate connected between the closed guide rails and the sliding block guide rails, a centering and clamping guide rail installed on the upper surface of the support plate, a group of safety valve centering devices slidingly connected on one side of the centering and clamping guide rail, and a group of indicator valve centering devices slidingly connected on the other side of the centering and clamping guide rail.

[0012] The support plate moves forward and backward along the sliding block guide rail, and the centering and clamping guide rail moves forward and backward together with the support plate.

[0013] The safety valve centering device and the indicator valve centering device move forward and backward together with the centering and clamping guide rail, and also move left and right along the centering and clamping guide rail, so as to adjust the positions of the safety valve and the indicator valve.

[0014] Further, the safety valve centering device comprises a first lifting cylinder, a third connecting plate connected to the output end of the first lifting cylinder, a safety valve centering block fixedly installed on the side surface of the third connecting plate, and a second guiding column fixedly installed on the lower half of the safety valve centering block.

[0015] The third connecting plate is vertically moved by the first lifting cylinder, and then the safety valve centering block and the second guide column are vertically moved together until the safety valve is inserted into the cylinder head safety valve mounting surface on the cylinder head of the marine diesel engine.

[0016] Further, the indicator valve centering device comprises a second lifting cylinder, a second fixed plate installed at the output end of the second lifting cylinder, a fourth connecting plate installed on the upper half of the side surface of the second fixed plate, a V-shaped block installed at the long edge end of the fourth connecting plate for contacting the semicircle of the side edge of the indicator valve, and a third guide column installed on the lower half of the side surface of the second fixed plate; the second lifting cylinder drives the third guide column to move in the vertical direction.

[0017] Further, the three-axis moving platform comprises two groups of first support frames symmetrically installed on the workbench, an X-axis guide rail is installed on the top surface of each group of first support frames, a Y-axis guide rail is slidably installed above the two X-axis guide rails through a support platform, and an automatic mounting mechanism and an automatic tightening mechanism are slidably installed on the Y-axis guide rail.

[0018] Further, the automatic mounting mechanism comprises a first Z-axis guide rail, a first fixed plate installed on the sliding block of the first Z-axis guide rail, and a mounting device installed on the first fixed plate; wherein the first Z-axis guide rail is connected with the sliding block on the Y-axis guide rail through a first connecting plate, and the mounting device moves along the first Z-axis guide rail;

[0019] The mounting device comprises a first rotary motor, a pneumatic claw coaxially installed at the output end of the first rotary motor, and a first guide column coaxially installed at the end of the pneumatic claw.

[0020] The distance between the claws of the pneumatic claw is adjusted to adapt to indicator valves or safety valves of different sizes, and after the pneumatic claw clamps the indicator valve or the safety valve, the first rotary motor is used to make the indicator valve or the safety valve correspond to the mounting hole on the cylinder head of the marine diesel engine.

[0021] Further, the automatic tightening mechanism comprises a second Z-axis guide rail fixedly installed on the sliding block of the Y-axis guide rail, a second connecting plate fixedly installed on the sliding block of the second Z-axis guide rail, a tightening device and a visual assembly installed on the second connecting plate; wherein the tightening device and the visual assembly move along the second Z-axis guide rail.

[0022] Further, the tightening device comprises a tightening motor, a tightening head coaxially installed at the output end of the tightening motor, an electromagnetic disc connected at the end of the tightening head, and an inner hexagonal screw adsorbed at the lower end of the electromagnetic disc.

[0023] The tightening head is rotated by the tightening motor, the lower end of the electromagnetic disc completely matches the inner hexagonal screw, the inner hexagonal screw is adsorbed by the electromagnetic disc, and the tightening head and the electromagnetic disc drive the inner hexagonal screw to rotate and tighten the indicator valve or the safety valve.

[0024] Beneficial effects: Compared with the prior art, the significant technical effects of the present application are:

[0025] Through the cooperation of the clamping and overturning mechanism, the lifting mechanism and the blocking mechanism, the lifting and overturning automation of the diesel engine cylinder is realized, through the guiding and clamping mechanism, the precision of the installation and positioning of the indicator valve and the safety valve is ensured, through the cooperation of the automatic installation mechanism and the automatic tightening mechanism on the three-axis moving platform and the cooperation of the visual assembly, the automatic installation of the indicator valve and the safety valve of the diesel engine cylinder cover is realized, which greatly improves the production efficiency, basically realizes automatic assembly, greatly improves the degree of automation of the production line and reduces the interference of manual operation on the production process. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is an assembly drawing of the marine diesel engine cylinder cover A and the indicator valve;

[0027] Figure 2 is an assembly drawing of the marine diesel engine cylinder cover B and the safety valve;

[0028] Figure 3 is a schematic diagram of the overall structure of the present application;

[0029] Figure 4 is a left view of Figure 3 ;

[0030] Figure 5 is a front view of Figure 3 ;

[0031] Figure 6 is a working state schematic diagram of the conveying device in Figure 3 ;

[0032] Figure 7 is a structural schematic diagram of the jacking mechanism in the present application

[0033] Figure 8 is a top view of the tray in the present application;

[0034] Figure 9 is a structural schematic diagram of the clamping and overturning mechanism in the present application;

[0035] Figure 10 is a structural schematic diagram of the clamping disc in Figure 9 ;

[0036] Figure 11 is a structural schematic diagram of the guiding and clamping mechanism in the present application;

[0037] Figure 12 is a structural schematic diagram of the indicator valve centering device in Figure 11 ;

[0038] Figure 13 For Figure 11 The structure diagram of the centering device of the safety valve;

[0039] Figure 14 The structure diagram of the three-axis moving platform in the application;

[0040] Figure 15 For Figure 14 The enlarged view of the automatic mounting mechanism and the automatic tightening mechanism;

[0041] Figure 16 For Figure 15 The structure diagram of the mounting device;

[0042] Figure 17 For Figure 15 The structure diagram of the tightening device. DETAILED DESCRIPTION

[0043] The technical solutions of the application will be described in detail below in combination with the specific embodiments and the accompanying drawings of the specification.

[0044] As Figure 1 and Figure 2 The structure diagrams of two different series of marine diesel engine cylinder heads A and B, which are left-right symmetrical structures, are the main assembly objects of the application. The following components are involved: cylinder head side wall valve port A-1, B-1, indicator valve A-2, safety valve B-2, cylinder head indicator valve mounting surface A-3, indicator valve guide hole A-4, cylinder head safety valve mounting surface B-3, safety valve guide hole B-4, cylinder head hole A-5, B-5, cylinder head lower surface A-6, B-6. Among them, Figure 1 The marine diesel engine cylinder head A shown in the figure, the bottom surface is the cylinder head hole 13, the cylinder head side wall valve port A-1 is symmetrically distributed on the left and right sides, the cylinder head indicator valve mounting surface A-3 is on the upper surface of the cylinder head A, and the hole on the indicator valve A-2 corresponds to the center of the mounting hole of the cylinder head indicator valve mounting surface A-3. Figure 2 The marine diesel engine cylinder head B shown in the figure, the bottom surface is uniformly distributed with cylinder head holes 13 of the same size, the cylinder head side wall valve port B-1 is symmetrically distributed on the left and right sides, and the safety valve B-2 is installed on the upper surface of the cylinder head B and is in close contact with the cylinder head safety valve mounting surface B-3.

[0045] As Figures 3-17As shown, the automatic assembly machine for the indicator valve and safety valve of the marine diesel engine cylinder head of the present invention involves the following components: a conveying device 1, a conveying roller 101, a position sensor 102, a worktable 2, an automatic installation mechanism 3, a first Z-axis guide rail 31, a first fixing plate 32, an installation device 33, a first guide column 331, a pneumatic chuck 332, a first rotary motor 333, a first connecting plate 34, an automatic tightening mechanism 4, a second Z-axis guide rail 41, a second connecting plate 42, a tightening device 43, a tightening motor 431, a tightening head 432, an internal hexagon screw 433, an electromagnet 434, a vision component 44, a three-axis moving mechanism 5, a first support frame 51, an X-axis guide rail 52, a Y-axis guide rail 53, a support platform 54, a chain 6, and a guide clamping mechanism 7. 71. Enclosed guide rail, 72. Centering clamping guide rail, 73. Safety valve centering device, 731. Third connecting plate, 732. First lifting cylinder, 733. Safety valve centering block, 734. Second guide column, 74. Indicator valve centering device, 74. V-block, 741. Fourth connecting plate, 742. Second fixing plate, 743. Second lifting cylinder, 744. Third guide column, 745. Slider guide rail, 75. Support plate, 76. Clamping and flipping mechanism, 8. Second support frame, 81. Semi-enclosed guide rail, 82. Slider, 83. Second rotary motor, 84. Clamping arm, 85. Clamping disc, 86. Type B pin, 862. Type A pin, 9. Tray, 91. Pin hole, 10. Motor, 11. Lifting mechanism, 111. Third lifting cylinder, 112. Third fixing plate, 113. Pin, 12. Blocking mechanism.

[0046] like Figures 3-6 As shown, the conveying device 1 is mounted on the workbench 2, and the lifting mechanism 11 is mounted above the conveying device 1 to achieve longitudinal movement of the marine diesel engine cylinder head. A set of clamping and flipping mechanisms 8 are symmetrically arranged on both sides of the conveying device 1 and fixed on the workbench 2. The guide clamping mechanism 7 is mounted above the lifting mechanism 11. The automatic installation mechanism 3 and the automatic tightening mechanism 4 are mounted above the guide clamping mechanism 7 and are movable via a three-axis moving platform 5. The clamping and flipping mechanism 8 clamps and flips the lifted marine diesel engine cylinder head. The guide clamping mechanism 7 carries the indicator valve or safety valve and, after the diesel engine cylinder head is flipped, adjusts its position and inserts the guide post on it into the cylinder head hole of the diesel engine cylinder head to achieve guiding positioning. The automatic installation mechanism 3 installs the indicator valve and safety valve on the marine diesel engine cylinder head and tightens them through the automatic tightening mechanism 4.

[0047] In this embodiment, in the conveying device 1, the motor 10 is placed on the workbench 2, and drives the conveyor roller 101 to rotate via the chain 6, thereby moving the tray 9 on the conveyor roller 101. The conveying device 1 is in a back-and-forth conveying state and is placed horizontally on the workbench 2. The diesel engine cylinder head A or diesel engine cylinder head B is placed on the tray 9, which is placed on the conveying device 1, enabling the cylinder head to be conveyed back and forth. On the left and right sides of the conveying device 1 are clamping and flipping mechanisms 8, which are fixed on the workbench 2, spanning the left and right sides of the conveying device 1 and symmetrical with respect to the conveying device 1. Position sensors 102 are installed on the left and right sides of the clamping and flipping mechanisms 8. A lifting mechanism 11 and a blocking mechanism 12 are installed inside the conveying device 1. The lifting mechanism 11 and the clamping and flipping mechanism 8 are on the same horizontal line. In this embodiment, the blocking mechanism 12 is evenly distributed in front of and behind the lifting mechanism 11. When the cylinder head reaches the predetermined position from the conveying device 1, the blocking cylinder 12 works to stop the movement of the tray 9. The lifting mechanism 11 can move up and down vertically, pushing the tray 9 to move the cylinder head up and down. The clamping plate 86 on the clamping and flipping mechanism 8 is located on the left and right sides of the cylinder head A and B processing stations, and can clamp the cylinder heads A and B on the conveying device 1. Above the clamping and flipping mechanism 8 is the guide clamping mechanism 7, and directly above the guide clamping mechanism 7 is the three-axis moving platform 5. An automatic installation mechanism 3 and an automatic tightening mechanism 4 are placed on the horizontal axis.

[0048] like Figure 7 and Figure 8 As shown, the lifting mechanism 11 includes a third lifting cylinder 111, a third fixing plate 112, and pins 113. The third fixing plate 112 is vertically mounted on the output end of the third lifting cylinder 111. One or more pins 113 are mounted on the upper surface of the third fixing plate 112. The marine diesel engine cylinder head is placed on a tray 9. Pin holes 91 are opened on the tray 9. The pins 113 correspond to the pin holes 91. When the third lifting cylinder 111 is activated, it drives the tray 9 to move vertically up and down.

[0049] like Figure 9 and Figure 10As shown, the clamping and overturning mechanism 8 includes a second support frame 81, a semi-closed guide rail 82, a sliding block 83, a second rotary motor 84, a clamping arm 85, a clamping disc 86, and B-shaped pins 861 and A-shaped pins 862 on the clamping disc 86. The second support frame 81 is placed on the workbench 2, the semi-closed guide rail 82 is placed above the second support frame 81, the sliding block 83 is slidingly connected in the semi-closed guide rail 82, and the second rotary motor 84 is fixedly installed on the upper surface of the sliding block 83. The sliding block 83 moves along the semi-closed guide rail 82 to drive the second rotary motor 84 to move horizontally forward and backward. The second rotary motor 84 is connected with the clamping arm 85 through a shaft coupling, and the front side of the clamping arm 85 is a stepped surface for fixing the clamping disc 86. The second rotary motor 84 connects the clamping disc 86 through the clamping arm 85, so that the clamping disc 86 is tightly attached to the side surfaces of the cylinder head A and B. A plurality of pins matched with the cylinder head side wall valve ports are arranged on the clamping disc 86. When the clamping disc 86 approaches the marine diesel engine cylinder head, the pins are inserted into the cylinder head side wall valve ports on the marine diesel engine cylinder head. Through the A-shaped pins 862 and B-shaped pins 861 on the clamping arm 86, the center of the cylinder head side wall valve port A1 and B1 is corresponded, the cylinder head A and B are clamped and overturned. The B-shaped pins 861 are diagonally distributed on the clamping disc 86, which are short cylindrical pins and edge-cut pins respectively, and the A-shaped pins 862 are distributed vertically on the clamping disc 86. By replacing the pins, different types of cylinder heads can be adapted.

[0050] As shown in Figure 11 The guiding and clamping mechanism 7 includes a closed guide rail 71, a centering and clamping guide rail 72, a safety valve centering device 73, a indicator valve centering device 74, a sliding block guide rail 75, and a support plate 76. The closed guide rail 71 and the sliding block guide rail 75 are symmetrically distributed on both sides of the conveying device 1, and the support plate 76 is connected between the closed guide rail 71 and the sliding block guide rail 75. The centering and clamping guide rail 72 is installed on the upper surface of the support plate 76. A group of safety valve centering devices 73 are slidingly connected on one side of the centering and clamping guide rail 72, and a group of indicator valve centering devices 74 are slidingly connected on the other side of the centering and clamping guide rail 72. The support plate 76 moves forward and backward along the sliding block guide rail 75, and the centering and clamping guide rail 72 moves forward and backward along the closed guide rail 71 together with the support plate 76. The safety valve centering device 73 and the indicator valve centering device 74 move forward and backward together with the centering and clamping guide rail 72, and also move left and right along the centering and clamping guide rail 72, so as to adjust the positions of the safety valve and the indicator valve.

[0051] As shown in Figure 12As shown, the indicator valve centering device 74 includes a V-shaped block 741, a fourth connecting plate 742, a second fixed plate 743, a second lifting cylinder 744, and a third guide column 745. The second fixed plate 743 is installed at the output end of the second lifting cylinder 744, the fourth connecting plate 742 is installed on the upper half of the side surface of the second fixed plate 743, the V-shaped block 741 is installed at the end of the long side of the fourth connecting plate 742 for contacting the semicircle of the side of the indicator valve, and the third guide column 745 is installed on the lower half of the side surface of the second fixed plate 743. The second lifting cylinder 744 drives the third guide column 745 to move vertically.

[0052] The indicator valve centering device 74 contacts the semicircle of the side of the indicator valve A-2 through the V-shaped block 741, the V-shaped block 741 is connected to the second fixed plate 743 through the fourth connecting plate 742, the second fixed plate 743 is rigidly connected to the third guide column 745, the distance between the V-shaped block 741 and the third guide column 745 is fixed, and the second lifting cylinder 744 is installed on the centering clamping mechanism 72 to drive the third guide column 745 to move vertically.

[0053] As shown, Figure 13 The safety valve centering device 73 includes a third connecting plate 731, a first lifting cylinder 732, a safety valve centering block 733, and a second guide column 734. The third connecting plate 731 is connected to the output end of the first lifting cylinder 732, the safety valve centering block 733 is fixedly installed on the side surface of the third connecting plate 731, and the second guide column 734 is fixedly installed on the lower half of the safety valve centering block 733. The third connecting plate 731 is vertically moved by the first lifting cylinder 732, thereby driving the safety valve centering block 733 and the second guide column 734 to move vertically together. The third connecting plate 731 is rigidly connected to the safety valve centering block 733 and the second guide column 734.

[0054] As shown, Figure 14 The three-axis moving platform 5 includes first support frames 51, X-axis guide rails 52, Y-axis guide rails 53, a support platform 54, the automatic mounting mechanism 3, and the automatic tightening mechanism 4. Two groups of first support frames 51 are symmetrically installed on the workbench 2, each group of first support frames 51 has an X-axis guide rail 52 installed on the top surface, the Y-axis guide rail 53 is slidably installed above the two X-axis guide rails 52 through the support platform 54, and the automatic mounting mechanism 3 and the automatic tightening mechanism 4 are slidably installed on the Y-axis guide rail 53.

[0055] The bottom surface of the support platform 54 is connected to the sliders on the X-axis guide rails 52 and moves horizontally forward and backward following the X-axis guide rails 52, the Y-axis guide rail 53 is installed on the cross beam of the support platform 54, and the automatic mounting mechanism 3 and the automatic tightening mechanism 4 are connected to the sliders on the Y-axis guide rail 53 through the first connecting plate 34 to move left and right.

[0056] As shown, Figure 15 andFigure 16 As shown in the figure, the automatic mounting mechanism 3 includes a first Z-axis guide rail 31, a first fixed plate 32, a mounting device 33, and a first connecting plate 34. The first fixed plate 32 is mounted on the slider of the first Z-axis guide rail 31, and the mounting device 33 is mounted on the first fixed plate 32. Among them, the first Z-axis guide rail 31 is connected with the slider on the Y-axis guide rail 53 through the first connecting plate 34, and the first fixed plate 32 is connected with the Z-axis guide rail 31 to drive the mounting device 33 on the first fixed plate 32 to move vertically up and down along the first Z-axis guide rail 31.

[0057] In this embodiment, the mounting device 33 includes a first guide column 331, a pneumatic jaw 332, and a first rotary motor 333. The first guide column 331 is coaxially installed at the end of the pneumatic jaw 332, the pneumatic jaw 332 is coaxially installed at the output end of the first rotary motor 333, and the output shaft of the first rotary motor 333 is connected with the pneumatic jaw 332 through a shaft coupling. The first guide column 331 is fixedly connected with the pneumatic jaw 332. By adjusting the jaw distance on the pneumatic jaw 332, different sizes and shapes of the indicator valve A-2 and the safety valve B-2 can be adapted, and the pneumatic jaw 332 clamps the indicator valve or the safety valve. After the indicator valve or the safety valve is clamped, the first rotary motor 333 is used to make the indicator valve or the safety valve correspond to the mounting hole on the cylinder cover of the marine diesel engine. Adjust the pneumatic jaw 332 to make the first guide column 331 correspond to the hole on the indicator valve A-2 and the safety valve B-2, clamp the indicator valve A-2 and the safety valve B-2, and make the indicator valve A-2 and the safety valve B-2 correspond to the mounting hole of the cylinder cover A and B through the first rotary motor 333.

[0058] As shown in the figure, Figure 15 and Figure 17 As shown in the figure, the automatic tightening mechanism 4 includes a second Z-axis guide rail 41, a second connecting plate 42, a tightening device 43, and a visual assembly 44. The second Z-axis guide rail 41 is also fixedly connected with the slider on the Y-axis guide rail 53 through the first connecting plate 34, the second connecting plate 42 is fixedly installed on the slider of the second Z-axis guide rail 41, and the tightening device 43 and the visual assembly 44 are installed on the second connecting plate 42. Among them, through the connection of the second connecting plate 42 and the second Z-axis guide rail 41, the tightening device 43 and the visual assembly 44 are driven to move vertically up and down along the second Z-axis guide rail 41.

[0059] In this embodiment, the tightening device 43 includes a tightening motor 431, a tightening head 432, an internal hexagonal screw 433, and an electromagnetic disc 434. The tightening head 432 is coaxially installed at the output end of the tightening motor 431, the electromagnetic disc 434 is connected at the end of the tightening head 432, and the internal hexagonal screw 433 is adsorbed at the lower end of the electromagnetic disc 434.

[0060] The motor 431 drives the tightening head 432 to rotate by tightening, the lower end of the electromagnetic disc 434 is completely attached to the internal hexagonal screw 433, the internal hexagonal screw 433 is adsorbed by the electromagnetic disc 434, the tightening head 432 and the electromagnetic disc 434 drive the internal hexagonal screw 433 to rotate to tighten the indicator valve A-2 and the safety valve B-2. The tightening head 4-3-2 is a quick-change device, by replacing different tightening heads, the tightening of multiple types of screws can be met.

[0061] When the automatic assembly machine of the application works, the automatic assembly of the indicator valve and the safety valve of the diesel engine cylinder cover is completed according to the following steps:

[0062] The first step: when the initial position, the tray 9 is located at the rear end of the conveying device 1, the cylinder cover A or the cylinder cover B is hoisted to the tray 9 by the lifting appliance, at this time, the lower surface 13 of the cylinder cover A or the cylinder cover B is placed on the tray 9, the tray 9 loaded with the cylinder cover A or the cylinder cover B is placed on the conveying device 1, the conveying device 1 drives the chain wheel 6 to convey by the motor 10, the chain wheel 6 is connected with the conveying roller 101 to drive the tray 9 and the cylinder cover A or the cylinder cover B on the tray to move forward until the detection position of the position sensor 102 stops moving, at this time, the cylinder cover A or the cylinder cover B is in the working state of waiting for processing and assembly.

[0063] The second step: the tray 9 stops moving at the detection position of the position sensor 102, at this time, the blocking mechanism 12 starts to work, the rear tray 9 collides with the tray 9 at the position to be processed and assembled, so as to avoid interference during assembly; at the same time, the jacking mechanism 11 works, the pin 113 on the third fixed plate 112 of the jacking mechanism 11 is matched with the pin hole 91 on the tray 9, so as to drive the tray 9 and the cylinder cover A to move upward to the set position. In this embodiment, the jacking mechanism 11 pushes the cylinder cover to rise to the corresponding height of the clamping and overturning mechanism 8.

[0064] The third step: the semi-closed guide rail 82 on the clamping and overturning mechanism 8 starts to work, drives the second rotating motor 84 connected with the sliding block 83 to move forward, and the left and right symmetrically distributed clamping discs 86 continuously approach the middle cylinder cover until the pins on the clamping discs 86 completely match and clamp the valve port A-1 or B-1 on the side wall of the cylinder cover A or the cylinder cover B, so as to complete the clamping action.

[0065] The fourth step: the jacking mechanism 11 works, drives the tray 9 to move downward to the set position, and the tray 9 is separated from the cylinder cover A or the cylinder cover B, at this time, the second rotating motor 84 on the clamping and overturning mechanism 8 drives the clamping disc 86 to clamp the cylinder cover A or the cylinder cover B through the clamping arm 85 to make a clockwise 90-degree overturning, so that the indicator valve mounting surface A-3 or the safety valve mounting surface B-3 of the cylinder cover is overturned to the upper side.

[0066] Fifth step: the guide clamping mechanism 7 works, through the closed guide rail 71 on the right side of the guide clamping mechanism 7 and the slider guide rail 75 on the left side and drive the support plate 76 to move forward and backward to the set position; At the same time, the centering clamping guide rail 72 is placed on the left and right of the support plate 76, and the safety valve centering device 73 and the indicator valve centering device 74 are respectively installed on the left and right of the centering clamping guide rail 72; The indicator valve centering device 74 and the safety valve centering device 73 are symmetrically distributed on the centering clamping guide rail 72, and the centering clamping guide rail 72 works to drive the left and right indicator valve clamping devices 74 and the safety valve centering device 73 to approach the guide hole A-4 or the guide hole B-4 on the cylinder head A or the cylinder head B.

[0067] Sixth step: for the indicator valve A-2, the second lifting cylinder 744 on the indicator valve centering device 74 drives the third guide column 745 to correspond with the center of the indicator valve guide hole A-4 on the cylinder head A; Then, the closed guide rail 71 works to drive the third guide column 745 to insert into the indicator valve guide hole A-4 on the cylinder head A, and the third guide column 745 is rigidly connected with the V-shaped block 741, which ensures that the V-shaped block 741 can tightly clamp the indicator valve A-2 when the indicator valve A-2 is installed on the cylinder head A, preventing it from falling; For the safety valve B-2, the first lifting cylinder 732 on the safety valve centering device 73 drives the second guide column 734 to correspond with the center of the guide hole B-4 on the cylinder head B through the third connecting plate 731, and the second guide column 734 is rigidly connected with the safety valve centering block 733, which is tightly clamped to the surface of the safety valve B-2 when the second guide column 734 is inserted into the guide hole B-4 on the cylinder head B, preventing it from falling when the safety valve B-2 is installed in the cylinder head B.

[0068] Seventh step: the three-axis moving platform 5 works, the X-axis guide rail 52 and the Y-axis guide rail 53 on the three-axis moving platform 5 work to drive the automatic installation mechanism 3 and the automatic tightening mechanism 4 on the Y-axis guide rail 53 to move to the set position, install the indicator valve A-2 or the safety valve B-2 on the installation device 33, adjust the first guide column 331 on the pneumatic jaw 332 to correspond with the installation position on the indicator valve A-2 and the safety valve B-2, clamp the indicator valve A-2 or the safety valve B-2, and drive the pneumatic jaw 332, the first rotating motor 333, the first guide column 331 coaxially installed at the end of the pneumatic jaw 332 by the first rotating motor 333. The rotation of the pneumatic jaw 332 makes the indicator valve A-2 or the safety valve B-2 correspond to the installation surface on the cylinder head A or the cylinder head B. The first Z-axis guide rail 31 drives the installation device 33 to move vertically downward through the first fixed plate 32, completes the installation action, and the installation device 33 rises after completing the assembly. At this time, the indicator valve A-2 is clamped by the indicator valve centering device 74 to prevent it from falling.

[0069] Step 8: After the installation of the indicator valve A-2 or the safety valve B-2, the automatic tightening mechanism 4 works, the tightening head 432 and the electromagnetic disc 434 are rotated by the tightening motor 431, the internal hexagonal screw 433 is placed in the tightening head 432 and is adsorbed by the electromagnetic disc 434, the visual assembly 44 works, automatically identifies the screw hole on the indicator valve A-2 or the safety valve B-2, moves the tightening device 43 and the visual assembly 44 to the set position by the second Z-axis guide rail 41, tightens the screw, and completes the assembly action.

[0070] Step 9: The clamping and overturning mechanism 8 works, the cylinder cover A or the cylinder cover B is overturned counterclockwise by 90 degrees by the second rotating motor 84, and returns to the initial position, the jacking mechanism 11 starts to work, drives the tray 9 to move vertically upward, and stops when the tray 9 contacts the lower surface A-6 of the cylinder cover A or the lower surface B-6 of the cylinder cover B, and the semi-closed guide rail 82 symmetrically distributed on the left and right sides drives the clamping disc 86 to move to the left and right sides, and returns to the initial position.

[0071] Step 10: The jacking mechanism 11 works, drives the tray 9 to move downward, and makes the cylinder cover A, B placed on the tray 9 drop to the initial position, the blocking mechanism 12 works, makes the tray 9 loaded with the assembled cylinder cover A, B move forward, and prepares for the assembly action of the next cylinder cover.

Claims

1. An automatic assembly machine for marine diesel engine cylinder head indicator and safety valves, characterized in that: The device comprises a workbench (2), a conveying device (1) arranged on the workbench (2), a jacking mechanism (11) arranged above the conveying device (1) for realizing the longitudinal movement of the cylinder cover of a marine diesel engine, a group of clamping and overturning mechanisms (8) symmetrically arranged on both sides of the conveying device (1) and fixed on the workbench (2), a guiding and clamping mechanism (7) arranged above the jacking mechanism (11), and an automatic mounting mechanism (3) and an automatic tightening mechanism (4) movably arranged above the guiding and clamping mechanism (7) through a three-axis moving platform (5); The clamping and overturning mechanism (8) is used for clamping and overturning the lifted cylinder cover of the marine diesel engine, the guiding and clamping mechanism (7) is used for carrying the indicator valve or the safety valve, and after the cylinder cover of the diesel engine is overturned, the guiding and clamping mechanism (7) is used for adjusting the position and inserting the guiding column thereon into the cylinder cover hole of the diesel engine to realize guiding and positioning, the automatic mounting mechanism (3) is used for mounting the indicator valve and the safety valve on the cylinder cover of the marine diesel engine, and the automatic tightening mechanism (4) is used for tightening. The guiding and clamping mechanism (7) comprises closed guide rails (71) and slide guide rails (75) symmetrically arranged on both sides of the conveying device (1), a support plate (76) connected between the closed guide rails (71) and the slide guide rails (75), a centering and clamping guide rail (72) mounted on the upper surface of the support plate (76), a group of safety valve centering devices (73) slidably connected on one side of the centering and clamping guide rail (72), and a group of indicator valve centering devices (74) slidably connected on the other side of the centering and clamping guide rail (72). The support plate (76) moves back and forth along the slide guide rails (75), and the centering and clamping guide rail (72) moves back and forth together with the support plate (76). The safety valve centering devices (73) and the indicator valve centering devices (74) move back and forth together with the centering and clamping guide rail (72), and also move left and right along the centering and clamping guide rail (72), so as to adjust the positions of the safety valve and the indicator valve. The safety valve centering device (73) comprises a first lifting cylinder (732), a third connecting plate (731) connected to the output end of the first lifting cylinder (732), a safety valve centering block (733) fixedly mounted on the side surface of the third connecting plate (731), and a second guiding column (734) fixedly mounted on the lower half of the safety valve centering block (733). The first lifting cylinder (732) drives the third connecting plate (731) to move vertically, and then drives the safety valve centering block (733) and the second guiding column (734) to move vertically. The indicator valve centering device (74) comprises a second lifting cylinder (744), a second fixed plate (743) mounted on the output end of the second lifting cylinder (744), a fourth connecting plate (742) mounted on the upper half of the side surface of the second fixed plate (743), a V-shaped block (741) mounted on the long edge end of the fourth connecting plate (742) for contacting the semicircle of the side edge of the indicator valve, and a third guiding column (745) mounted on the lower half of the side surface of the second fixed plate (743); the second lifting cylinder (744) drives the third guiding column (745) to move in the vertical direction.

2. The automatic assembly machine for the indicator and safety valve of a marine diesel engine cylinder head according to claim 1, characterized in that: The jacking mechanism (11) comprises a third lifting cylinder (111), a third fixed plate (112) vertically arranged at the output end of the third lifting cylinder (111), and one or more than one pin (113) arranged on the upper surface of the third fixed plate (112); the marine diesel engine cylinder cover is placed on the tray (9), the tray (9) is provided with a pin hole (91), the pin (113) corresponds to the pin hole (91), and the third lifting cylinder (111) drives the tray (9) to vertically move up and down when the third lifting cylinder (111) is actuated.

3. The automatic assembly machine for the indicator and safety valve of the cylinder head of a marine diesel engine according to claim 1, characterized in that: The clamping and overturning mechanism (8) comprises a second support frame (81) mounted on the workbench (2), a semi-closed guide rail (82) placed above the second support frame (81), a sliding block (83) slidingly connected in the semi-closed guide rail (82), and a second rotary motor (84) fixedly installed on the upper surface of the sliding block (83). The sliding block (83) moves along the semi-closed guide rail (82) to drive the second rotary motor (84) to move horizontally forward and backward. The second rotary motor (84) is connected with a clamping disc (86) through a clamping arm (85), the clamping disc (86) is provided with a plurality of pins matched with the cylinder cover side wall valve port, and the clamping disc (86) moves with the second rotary motor (84); when the clamping disc (86) is close to the marine diesel engine cylinder cover, the pins are inserted into the cylinder cover side wall valve port of the marine diesel engine cylinder cover.

4. The automatic assembly machine for the indicator and safety valve of a marine diesel engine cylinder head according to claim 1, characterized in that: The three-axis moving platform (5) comprises two groups of first support frames (51) symmetrically mounted on the workbench (2), an X-axis guide rail (52) mounted on the top surface of each group of first support frames (51), a Y-axis guide rail (53) slidingly installed above the two X-axis guide rails (52) through a support platform (54), and an automatic mounting mechanism (3) and an automatic tightening mechanism (4) slidingly installed on the Y-axis guide rail (53).

5. The automatic assembly machine for the indicator and safety valve of a marine diesel engine cylinder head according to claim 4, characterized in that: The automatic mounting mechanism (3) comprises a first Z-axis guide rail (31), a first fixed plate (32) mounted on the sliding block of the first Z-axis guide rail (31), and a mounting device (33) mounted on the first fixed plate (32); wherein the first Z-axis guide rail (31) is connected with the sliding block on the Y-axis guide rail (53) through a first connecting plate (34), and the mounting device (33) moves along the first Z-axis guide rail (31); The mounting device (33) comprises a first rotary motor (333), a pneumatic jaw (332) coaxially installed at the output end of the first rotary motor (333), and a first guide column (331) coaxially installed at the tail end of the pneumatic jaw (332). The jaw distance of the pneumatic jaw (332) is adjusted to adapt to different sizes of the indicating valve or the safety valve, the pneumatic jaw (332) clamps the indicating valve or the safety valve, and the first rotary motor (333) is used to make the indicating valve or the safety valve correspond to the mounting hole on the marine diesel engine cylinder cover.

6. The automatic assembly machine for the indicator and safety valve of a marine diesel engine cylinder head according to claim 4, characterized in that: The automatic tightening mechanism (4) comprises a second Z-axis guide rail (41) fixedly installed on a Y-axis guide rail (53) slider, a second connecting plate (42) fixedly installed on a second Z-axis guide rail (41) slider, a tightening device (43) and a visual assembly (44) installed on the second connecting plate (42); wherein the tightening device (43) and the visual assembly (44) move along the second Z-axis guide rail (41).

7. The automatic assembly machine for the indicator and safety valve of a marine diesel engine cylinder head according to claim 6, characterized in that: The tightening device (43) comprises a tightening motor (431), a tightening head (432) coaxially installed on an output end of the tightening motor (431), an electromagnetic disc (434) connected to a tail end of the tightening head (432), and an inner hexagonal screw (433) adsorbed to a lower end of the electromagnetic disc (434). The tightening motor (431) drives the tightening head (432) to rotate, the lower end of the electromagnetic disc (434) is completely attached to the inner hexagonal screw (433), the electromagnetic disc (434) adsorbs the inner hexagonal screw (433), and the tightening head (432) and the electromagnetic disc (434) drive the inner hexagonal screw (433) to rotate to tighten the indicating effort valve or the safety valve.

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