An automatic cylinder head assembly device for a diesel engine

Abstract

The present invention is applicable to the technical field of diesel engine assembly, and provides an automatic cylinder head assembly device for a diesel engine, including a conveying mechanism, a diesel engine assembly and an auxiliary assembly arranged on the top of the conveying mechanism, a cleaning assembly installed on the auxiliary assembly, and an assembly assembly arranged on one side of the conveying mechanism. The diesel engine assembly includes a diesel engine main body, a cylinder gasket and a cylinder head. A cylinder liner and four positioning posts are arranged on one side of the diesel engine main body. This device solves the problem that the offset of the cylinder liner affects the assembly of the cylinder gasket and the cylinder head, and finally leads to the rupture of the cylinder liner. By setting a swing arm and a spring rod, after the cylinder gasket is sleeved on the positioning post, its side wall fits with the diesel engine main body, and the auxiliary cylinder pushes the auxiliary plate close to the cylinder gasket, so that the spring rod is inserted into the cylinder liner. The adjusting cylinder squeezes the moving groove, drives the swing arm to move the two spring rods away from each other and fit with the inner wall of the cylinder liner, adjusts the angle and position of the cylinder liner, and ensures that the cylinder gasket and the cylinder head can be correctly placed.

Description

Technical Field

[0001] The present invention relates to the technical field of diesel engine assembly, and more specifically, it relates to an automatic cylinder head assembly device for a diesel engine. Background Art

[0002] A diesel engine is an internal combustion engine that generates high temperature by compressing air, causing the injected diesel to self-ignite, pushing the piston to do work, and converting chemical energy into mechanical energy. It has high thermal efficiency, large torque, and strong durability, and is widely used in fields such as trucks, ships, generators, and construction machinery. The cylinder head of a diesel engine, also called a cylinder cover, is one of the key components of a diesel engine.

[0003] When assembling the cylinder head of a diesel engine onto the diesel engine body, the general method is manual assembly. That is, first place a cylinder gasket on the diesel engine body, then place the cylinder head of the diesel engine at the position of the cylinder gasket, and then fix the cylinder head to the diesel engine body with screws. However, this method is cumbersome to operate, and it requires workers to carry the cylinder head, which affects the assembly efficiency. Workers have made improvements to the existing assembly method and changed the installation method to automatic installation to improve the assembly efficiency.

[0004] However, during the assembly process of a diesel engine, the cylinder liner may shift. If it is not adjusted before placing the cylinder gasket, it may cause a squeezing force between the cylinder liner and the cylinder gasket. In this case, forcibly assembling the cylinder head will not only damage the sealing performance of the cylinder gasket but also may further increase the stress on the cylinder liner, ultimately resulting in the cylinder liner cracking. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide an automatic cylinder head assembly device for a diesel engine.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An automatic cylinder head assembly device for a diesel engine, comprising a conveying mechanism, a diesel engine assembly and an auxiliary assembly arranged on the top of the conveying mechanism, a cleaning assembly installed on the auxiliary assembly, and an assembly assembly arranged on one side of the conveying mechanism.

[0007] The diesel engine assembly includes a diesel engine body, a cylinder gasket, and a cylinder head. One side of the diesel engine body is provided with a cylinder liner and four positioning columns.

[0008] The auxiliary assembly includes two second electric slide rails vertically installed on the top of the conveying mechanism. A third electric slide rail is horizontally installed on the opposite side of each of the two second electric slide rails. A sliding plate is slidably connected to the top of the third electric slide rail. An auxiliary cylinder is installed on the top of the sliding plate. The piston rod of the auxiliary cylinder is connected to an auxiliary plate. Two swing arms are arranged on the side wall of the auxiliary plate. A spring rod is installed on one side of each of the two swing arms close to the conveying mechanism.

[0009] The present invention is further configured such that: the assembly component includes a frame disposed on one side of the conveying mechanism and a support plate horizontally installed inside the frame, and an installation mechanism and a placement mechanism are slidably connected to the inner top wall of the frame.

[0010] The present invention is further configured such that: the installation mechanism includes an installation electric frame slidably connected to the inner top wall of the frame and an installation carrier frame slidably connected to the bottom of the installation electric frame. A moving plate is slidably connected to the installation carrier frame, and four installation tubes are horizontally arranged on the moving plate. Four electric sliding rods are circumferentially installed at the bottom of the installation carrier frame, and a piston rod of each electric sliding rod is installed with an installation motor. The four installation motors are correspondingly arranged with the four installation tubes, and an output end of the installation motor is connected to the corresponding installation tube.

[0011] By adopting the above technical solution, when the placement electric frame slides on the frame, it drives the manipulator, the first electric guide rail, and the two clamping cylinders to move simultaneously, thereby adjusting the position of the manipulator. The manipulator is used to drive the displacement of the first electric guide rail and the two clamping cylinders, so that the two clamping cylinders can have an angle for clamping the cylinder gasket and the cylinder head. The first electric guide rail is a bidirectional electric guide rail, that is, the lead screw in the first electric guide rail is a bidirectional lead screw, which is convenient for driving the two clamping cylinders to approach or move away from each other. When the two clamping cylinders are adjusted to the clamping angle, the two clamping cylinders approach each other and grab the cylinder gasket placed on the support plate, and then the cylinder gasket is adjusted to a vertical angle. Subsequently, the placement electric frame drives the manipulator to move, thereby controlling the cylinder gasket to move to the position of the positioning post and completing the sleeving.

[0012] The present invention is further configured such that: the placement mechanism includes a placement electric frame slidably connected to the inner top wall of the frame and a manipulator installed at the bottom of the placement electric frame. An output end of the manipulator is installed with a first electric guide rail, and two clamping cylinders are slidably installed on side walls of the first electric guide rail.

[0013] By adopting the above technical solution, the installation electric frame is used to drive other components of the installation mechanism to move synchronously, thereby driving the four installation tubes to be adjusted to positions opposite to the four positioning posts. Nuts are assembled inside the installation tubes. When the cylinder head needs to be installed and fixed, the four electric sliding rods simultaneously push the four installation motors to move. At the same time, the moving plate and the four installation tubes move closer to the diesel engine main body at the same time, so that the installation tubes can be sleeved on the outer side walls of the corresponding positioning posts. Then, the four installation motors drive the corresponding installation tubes and the nuts inside the installation tubes to rotate, so that the nuts are screwed on the outer side walls of the corresponding positioning posts, and finally the purpose of locking the cylinder head is achieved.

[0014] The present invention is further configured such that: fixing plates are installed on the side walls of each of the auxiliary plates, two swing arms on the side wall of each auxiliary plate are hinged to the corresponding fixing plates, adjusting cylinders are installed on the side walls of each auxiliary plate, the piston rod of the adjusting cylinder is connected to a moving groove, the ends of the two swing arms are slidably connected to the inside of the corresponding moving groove, and springs are connected between the two swing arms and the moving groove.

[0015] The present invention is further configured such that: an inclined portion is provided at one end of each swing arm away from the adjusting cylinder, the inclined portion faces the corresponding auxiliary cylinder, a connecting rod is connected between the tops of the opposite sides of the two second electric slide rails, and an auxiliary frame is slidably connected to the same side of the two second electric slide rails.

[0016] The present invention is further configured such that: two connecting plates are installed on the side wall of the fixing plate, an L-shaped plate is hinged to one end of the two connecting plates away from the corresponding adjusting cylinder, a telescopic cylinder is hingedly installed between the two connecting plates, and the piston rod of the telescopic cylinder is hinged to one end of the corresponding L-shaped plate away from the connecting plate.

[0017] By adopting the above technical solution, after the cylinder gasket is sleeved on the four positioning posts, the side wall of the cylinder gasket fits with the diesel engine main body. In this state, the auxiliary cylinder drives the corresponding auxiliary plate to approach the cylinder gasket, causing the spring rod to be inserted into the inside of the cylinder sleeve. Then, the adjusting cylinder drives the moving groove to squeeze the swing arm, and the two spring rods on the auxiliary plate move away from each other and fit with the inner wall of the cylinder sleeve. The cylinder sleeve is squeezed to adjust the angle and position, ensuring that the cylinder gasket can be correctly placed.

[0018] When the cylinder head is installed, the auxiliary cylinder contracts, and the end arc of the spring rod fits with the cylinder sleeve. Subsequently, the two third electric slide rails drive the auxiliary cylinder and the auxiliary plate to move away from each other, and the cylinder sleeve applies a reverse force to contract the spring rod. When the cylinder head is assembled, its side wall first fits with the inclined surface of the L-shaped plate. As the cylinder head goes deeper, the auxiliary plate gradually separates, and the side wall of the cylinder head slides on the inclined surface of the L-shaped plate until it completely slides out. Then, the cylinder head fits with the inclined portion at the end of the swing arm and gradually slides and separates. When the cylinder head is about to fit with the cylinder gasket, the swing arm moves away from between the cylinder head and the cylinder gasket, and the cylinder head and the cylinder gasket are completely fitted. This operation ensures that the cylinder gasket always fits with the diesel engine main body during the assembly process of the cylinder head, preventing the cylinder sleeve from shifting or the cylinder gasket from offsetting, and avoiding the cylinder sleeve from cracking.

[0019] The present invention is further configured such that: the cleaning assembly includes a displacement cylinder horizontally installed on the side wall of the auxiliary frame, the piston rod of the displacement cylinder penetrates the auxiliary frame and is connected to a vertical plate, a cross-shaped bracket is installed at the bottom of the side of the vertical plate away from the auxiliary frame, sleeves are communicated with each extension arm of the cross-shaped bracket, and a pressing mechanism is installed at the bottom of the side of the vertical plate close to the auxiliary frame.

[0020] The present invention is further configured such that: the extrusion mechanism includes a bottom plate body installed on one side of the vertical plate close to the auxiliary frame and four electric chucks disposed between the plate body and the vertical plate, and the four electric chucks are correspondingly arranged with the four sleeves.

[0021] The present invention is further configured such that: four gears are provided on one side of the plate body close to the vertical plate, and every two horizontally arranged gears are in a group and mesh with each other. A support arm is connected to the side wall of each gear, and the four support arms are correspondingly arranged with the four electric chucks. The electric chucks are installed on the side walls of the corresponding support arms. Two servo motors are installed on the side of the plate body away from the vertical plate, and the two servo motors are connected to the centers of two vertically arranged gears.

[0022] By adopting the above technical solution, before the cylinder gasket is sleeved, the displacement cylinder drives the vertical plate, the cross bracket, the sleeve and the extrusion mechanism to move. The sleeve and the electric chuck are synchronously sleeved outside the positioning post, and their inner diameters are larger than the outer diameter of the positioning post, and they do not contact the positioning post during movement. When the cross bracket fits with the cylinder sleeve, the displacement cylinder contracts to drive the vertical plate, the cross bracket, the sleeve and the extrusion mechanism to move in the reverse direction. At this time, the inner diameter of the electric chuck shrinks to fit with the positioning post, and impurities and oil stains on the surface of the positioning post are scraped off during the reverse movement, ensuring that there is no oil stain or impurity on the surface of the cylinder gasket that affects the sealing performance.

[0023] After the cylinder gasket is sleeved, the displacement cylinder drives the vertical plate, the cross bracket, the sleeve and the extrusion mechanism to move simultaneously. The sleeve on the cross bracket is used to assist in pushing the insertion part of the cylinder gasket and the positioning post, ensuring that the degree of deformation of the cylinder gasket is reduced during the sleeving process, and enabling the cylinder gasket to be smoothly sleeved and placed.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] (1) By providing the swing arm and the spring rod, after the cylinder gasket is sleeved on the four positioning posts, the side wall of the cylinder gasket fits with the diesel engine main body. In this state, the auxiliary cylinder drives the corresponding auxiliary plate to approach the cylinder gasket, causing the spring rod to be inserted into the inside of the cylinder sleeve. Then, the adjustment cylinder drives the moving groove to squeeze the swing arm, and the two spring rods on the auxiliary plate move away from each other and fit with the inner wall of the cylinder sleeve. The cylinder sleeve is squeezed to adjust the angle and position, ensuring that the cylinder gasket and the cylinder head can be correctly placed.

[0026] (2) When the cylinder head is installed, the auxiliary cylinder contracts, and the end arc of the spring rod fits with the cylinder liner. Subsequently, two third electric slide rails drive the auxiliary cylinder and the auxiliary plate to move away from each other. The cylinder liner exerts a reverse force to contract the spring rod. When the cylinder head is assembled, its side wall first fits with the inclined surface of the L-shaped plate. As the cylinder head goes deeper, the auxiliary plate gradually separates. The side wall of the cylinder head slides on the inclined surface of the L-shaped plate until it completely slides out. Then, the cylinder head fits with the inclined part at the end of the swing arm and gradually slides and separates. When the cylinder head is about to fit with the cylinder gasket, the swing arm moves away from between the cylinder head and the cylinder gasket, and the cylinder head and the cylinder gasket complete the fitting. This operation ensures that the cylinder gasket always fits with the diesel engine body during the assembly process of the cylinder head, preventing the cylinder liner from shifting or the cylinder gasket from offsetting, and avoiding the cylinder liner from cracking.

[0027] (3) By setting up the extrusion mechanism, before the cylinder gasket is sleeved, the displacement cylinder drives the vertical plate, the cross bracket, the sleeve and the extrusion mechanism to move. The sleeve and the electric chuck are synchronously sleeved outside the positioning column. Their inner diameters are both larger than the outer diameter of the positioning column and do not contact the positioning column during movement. When the cross bracket fits with the cylinder liner, the displacement cylinder contracts and drives the vertical plate, the cross bracket, the sleeve and the extrusion mechanism to move in the reverse direction. At this time, the inner diameter of the electric chuck shrinks to fit with the positioning column, and scrapes off the impurities and oil stains on the surface of the positioning column during the reverse movement, ensuring that there are no oil stains or impurities on the surface of the cylinder gasket that affect the sealing performance.

[0028] (4) After the cylinder gasket is sleeved, the displacement cylinder drives the vertical plate, the cross bracket, the sleeve and the extrusion mechanism to move simultaneously. The sleeve on the cross bracket assists in pushing the insertion part of the cylinder gasket and the positioning column, ensuring that the degree of deformation of the cylinder gasket is reduced during the sleeving process and enabling the cylinder gasket to be successfully sleeved and placed. Brief Description of the Drawings

[0029] Figure 1 It is a schematic diagram of the overall structure of an automatic assembly device for a cylinder head of a diesel engine according to the present invention.

[0030] Figure 2 It is a schematic diagram of the cooperative structure of the conveying mechanism, the auxiliary component and the cleaning component in the present invention.

[0031] Figure 3 It is a schematic diagram of the exploded structure of the diesel engine components in the present invention.

[0032] Figure 4 It is a schematic diagram of the cooperative structure of the diesel engine components, the auxiliary component and the cleaning component in the present invention.

[0033] Figure 5 It is a schematic diagram of the cooperative structure of the auxiliary component and the cleaning component in the present invention.

[0034] Figure 6 It is a schematic diagram of the partial structure of the auxiliary component in the present invention.

[0035] Figure 7 isFigure 6 Schematic diagram of the local structure in the middle

[0036] Figure 8 Schematic diagram of the cleaning component structure in the present invention

[0037] Figure 9 Schematic diagram of the extrusion mechanism structure in the present invention

[0038] Figure 10 Schematic diagram of the assembly component structure in the present invention

[0039] Figure 11 Schematic diagram of the installation mechanism structure in the present invention

[0040] Figure 12 Schematic diagram of the internal structure of the moving groove in the present invention

[0041] Explanation of reference numerals: 1. Conveyor mechanism;

[0042] 2. Diesel engine assembly; 21. Diesel engine main body; 22. Cylinder liner; 23. Positioning column; 24. Cylinder gasket; 25. Cylinder head;

[0043] 3. Assembly component; 31. Frame; 32. Support plate; 33. Installation mechanism; 331. Installation electric frame; 332. Installation carrier; 333. Moving plate; 334. Electric slide bar; 335. Installation motor; 336. Installation pipe;

[0044] 34. Placing mechanism; 341. Placing electric frame; 342. Manipulator; 343. First electric guide rail; 344. Clamping cylinder;

[0045] 4. Auxiliary component; 41. Second electric slide rail; 42. Connecting rod; 43. Auxiliary frame; 44. Third electric slide rail; 45. Slide plate; 46. Auxiliary cylinder; 47. Auxiliary plate; 48. Fixed plate; 49. Swing arm; 401. Adjusting cylinder; 402. Moving groove; 403. Inclined part; 404. Connecting plate; 405. Telescopic cylinder; 406. L-shaped plate; 407. Spring rod; 408. Spring;

[0046] 5. Cleaning component; 51. Displacement cylinder; 52. Vertical plate; 53. Cross bracket; 54. Sleeve;

[0047] 55. Extrusion mechanism; 551. Plate body; 552. Gear; 553. Support arm; 554. Electric chuck; 555. Servo motor. Detailed implementation manners

[0048] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0049] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0050] Please refer to Figures 1 - 12 , the present invention provides the following technical solutions:

[0051] Example 1, refer to Figure 1 and Figure 2 , an automatic cylinder head assembly device for a diesel engine, including a conveying mechanism 1, the conveying mechanism 1 can be a conveyor belt assembly, which is not specifically limited here, and a diesel engine assembly 2 arranged on top of the conveying mechanism 1. The diesel engine assembly 2 is conveyed and displaced by the conveying mechanism 1 to facilitate the subsequent assembly of the cylinder head.

[0052] Refer to Figure 3 , the diesel engine assembly 2 includes a diesel engine body 21, a cylinder gasket 24 and a cylinder head 25. A cylinder liner 22 and four positioning posts 23 are arranged on one side of the diesel engine body 21. The cylinder liner 22 is loaded inside the diesel engine body 21, and the four positioning posts 23 are installed on the side wall of the diesel engine body 21. The cylinder gasket 24 and the cylinder head 25 can be placed guided by the four positioning posts 23, and threads are provided on the four positioning posts 23. The cylinder head 25 can be installed and fixed by nuts and the threads on the positioning posts 23.

[0053] Refer to Figure 1 , Figure 10 and Figure 11 , an assembly component 3 is arranged on one side of the conveying mechanism 1. The assembly component 3 is used to grab and assemble the cylinder gasket 24 and the cylinder head 25 to be assembled onto the diesel engine body 21. The specific structure of the assembly component 3 is as follows:

[0054] Refer to Figure 1 , Figure 10 and Figure 11 , the assembly component 3 includes a frame 31 arranged on one side of the conveying mechanism 1 and a support plate 32 horizontally installed inside the frame 31. The inner top wall of the frame 31 is slidably connected with an installation mechanism 33 and a placement mechanism 34. The installation mechanism 33 and the placement mechanism 34 can slide on the frame 31, and the support plate 32 is used to place the cylinder gasket 24 and the cylinder head 25 to be assembled. When the diesel engine assembly 2 moves to a suitable position, the placement mechanism 34 can pick up the cylinder gasket 24 and sleeved onto the four positioning posts 23, and the cylinder gasket 24 fits against the side wall of the diesel engine body 21. Then, the cylinder head 25 is picked up and sleeved onto the four positioning posts 23 again. Subsequently, the placement mechanism 34 fixes the cylinder head 25 with nuts.

[0055] Refer to Figure 1 , Figure 10, the placing mechanism 34 includes a placing electric frame 341 slidably connected to the inner top wall of the frame 31 and a manipulator 342 installed at the bottom of the placing electric frame 341. The output end of the manipulator 342 is equipped with a first electric guide rail 343. Two clamping cylinders 344 are slidably installed on the side walls of the first electric guide rail 343. When the placing electric frame 341 slides on the frame 31, it drives the manipulator 342, the first electric guide rail 343 and the two clamping cylinders 344 to move simultaneously, thereby adjusting the position of the manipulator 342. The manipulator 342 is used to drive the first electric guide rail 343 and the two clamping cylinders 344 to displace, so that the two clamping cylinders 344 can have an angle for clamping the cylinder gasket 24 and the cylinder head 25. The first electric guide rail 343 is a two-way electric guide rail, that is, the lead screw in the first electric guide rail 343 is a two-way lead screw, which is convenient for driving the two clamping cylinders 344 to approach or move away from each other. When the two clamping cylinders 344 are adjusted to the clamping angle, the two clamping cylinders 344 approach each other and grab the cylinder gasket 24 placed on the support plate 32, and then adjust the cylinder gasket 24 to the vertical angle. Subsequently, the placing electric frame 341 drives the manipulator 342 to move, thereby controlling the cylinder gasket 24 to move to the position of the four positioning columns 23 and complete the sleeving.

[0056] Then, the two clamping cylinders 344 are adjusted to the position of the cylinder head 25, and the cylinder head 25 is clamped and sleeved onto the four positioning columns 23 again by the two clamping cylinders 344 approaching each other. After the placing work is completed, the cylinder head 25 is installed by the installation mechanism 33. The specific structure of the installation mechanism 33 is as follows:

[0057] Refer to Figure 1 、 Figure 10 and Figure 11, the installation mechanism 33 includes an installation electric frame 331 slidably connected to the inner top wall of the frame 31 and an installation carrier frame 332 slidably connected to the bottom of the installation electric frame 331. A moving plate 333 is slidably connected to the installation carrier frame 332. Four installation tubes 336 are horizontally arranged on the moving plate 333. Four electric sliding rods 334 are installed around the bottom of the installation carrier frame 332. The piston rod of each electric sliding rod 334 is installed with an installation motor 335. The four installation motors 335 are arranged corresponding to the four installation tubes 336. The output end of the installation motor 335 is connected to the corresponding installation tube 336. The installation electric frame 331 is used to drive other components of the installation mechanism 33 to move synchronously, so as to drive the four installation tubes 336 to be adjusted to positions opposite to the four positioning columns 23. A nut is assembled inside the installation tube 336. When the cylinder head 25 needs to be installed and fixed, the four electric sliding rods 334 simultaneously push the four installation motors 335 to move. At the same time, the moving plate 333 and the four installation tubes 336 simultaneously move closer to the diesel engine main body 21, so that the installation tubes 336 can be sleeved on the outer side wall of the corresponding positioning columns 23. Then the four installation motors 335 drive the corresponding installation tubes 336 and the nuts inside the installation tubes 336 to rotate, so that the nuts are screwed on the outer side wall of the corresponding positioning columns 23, and finally the purpose of locking the cylinder head 25 is achieved.

[0058] Embodiment 2. During the assembly process of the diesel engine, the cylinder liner 22 will shift. If it is not adjusted before placing the cylinder gasket 24, a force of mutual extrusion may be generated between the cylinder liner 22 and the cylinder gasket 24. In this case, forcibly assembling the cylinder head 25 will not only damage the sealing performance of the cylinder gasket 24, but also may further intensify the force on the cylinder liner 22, and finally cause the cylinder liner 22 to rupture.

[0059] Therefore, refer to Figure 2 , an auxiliary component 4 is installed on the top of the conveying mechanism 1. The auxiliary component 4 is used to assist in positioning the cylinder liner 22 to ensure that the cylinder liner 22 is in a normal position, which is convenient for placing the cylinder gasket 24. The specific structure of the auxiliary component 4 is as follows:

[0060] Refer to Figures 4 - 7 and Figure 12, the auxiliary component 4 includes two second electric slide rails 41 vertically installed on the top of the conveying mechanism 1. A connecting rod 42 is connected between the tops of the opposite sides of the two second electric slide rails 41. The second electric slide rails 41 and the connecting rod 42 cooperate to form a gantry structure. Third electric slide rails 44 are horizontally installed on the opposite sides of the two second electric slide rails 41. A sliding plate 45 is slidably connected to the top of the third electric slide rail 44. An auxiliary cylinder 46 is installed on the top of the sliding plate 45. The third electric slide rail 44 is used to drive the sliding plate 45 and the corresponding auxiliary cylinder 46 to move horizontally, thereby adjusting the distance between the two auxiliary cylinders 46. The piston rod of the auxiliary cylinder 46 is connected to an auxiliary plate 47. The auxiliary cylinder 46 is used to drive the corresponding auxiliary plate 47 to displace, thereby adjusting the distance between the auxiliary plate 47 and the cylinder sleeve 22. A fixing plate 48 is installed on the side wall of each auxiliary plate 47. Two swing arms 49 are arranged on the side wall of the auxiliary plate 47. The two swing arms 49 on the side wall of each auxiliary plate 47 are hinged to the corresponding fixing plate 48. Spring rods 407 are installed on the sides of the two swing arms 49 close to the conveying mechanism 1. An adjusting cylinder 401 is installed on the side wall of each auxiliary plate 47. The piston rod of the adjusting cylinder 401 is connected to a moving groove 402. The ends of the two swing arms 49 are slidably connected to the inside of the corresponding moving groove 402. A spring 408 is connected between the two swing arms 49 and the moving groove 402. Two rod bodies are installed inside the moving groove 402. Sliders are slidably connected to the two rod bodies. The two sliders are hinged to the two swing arms 49. The spring 408 is connected between the slider and the moving groove 402.

[0061] The adjusting cylinder 401 is used to drive the corresponding moving groove 402 to move. The moving groove 402 squeezes or pulls the corresponding swing arm 49. The angle of the swing arm 49 changes during the squeezing or pulling process. That is, when the swing arm 49 is squeezed, the swing arm 49 drives the corresponding slider to slide on the corresponding rod body and squeezes the spring 408. The included angle between the two swing arms 49 increases. When the swing arm 49 is pulled, the swing arm 49 drives the corresponding slider to slide on the corresponding rod body and releases the spring 408. The included angle between the two swing arms 49 decreases.

[0062] Specifically, when the cylinder gasket 24 is sleeved on the four positioning posts 23, the side wall of the cylinder gasket 24 fits against the diesel engine main body 21. In this state, the auxiliary cylinder 46 drives the corresponding auxiliary plate 47 to approach the cylinder gasket 24, causing the spring rod 407 to be inserted into the inside of the cylinder sleeve 22. Then, the adjusting cylinder 401 drives the moving groove 402 to squeeze the swing arm 49. The two spring rods 407 on the auxiliary plate 47 move away from each other and fit against the inner wall of the cylinder sleeve 22. The cylinder sleeve 22 is squeezed to adjust the angle and position, ensuring that the cylinder gasket 24 can be correctly placed.

[0063] If it is only a single adjustment, after the cylinder gasket 24 is placed, since there is no driving force for installation of the cylinder gasket 24, the cylinder liner 22 may sag slightly under the influence of gravity. As a result, the cylinder gasket 24 will be extruded and displaced backward by a certain distance by the cylinder liner 22, and then the cylinder gasket 24 is not placed in place. The cylinder gasket 24 will still extrude the offset cylinder liner 22. If the auxiliary adjustment mechanism is used to maintain the adjustment state of the cylinder liner 22, the auxiliary adjustment mechanism will interfere with the installation of the cylinder gasket 24 and the cylinder head 25. If it is directly withdrawn, the cylinder liner 22 will still shift and cause reverse extrusion of the cylinder gasket 24.

[0064] Therefore, referring to Figure 7 , two connecting plates 404 are installed on the side wall of the fixing plate 48. At the ends of the two connecting plates 404 away from the corresponding adjusting cylinders 401, L-shaped plates 406 are hinged. A telescopic cylinder 405 is installed between the two connecting plates 404 in a hinged manner. The piston rod of the telescopic cylinder 405 is hinged to the end of the corresponding L-shaped plate 406 away from the connecting plate 404. The adjusting cylinder 401 is used to push the L-shaped plate 406 to swing between the two connecting plates 404. When the adjusting cylinder 401 extends, the side wall of the L-shaped plate 406 is in an inclined state, and the inclined direction extends towards the center of the cylinder liner 22. When the adjusting cylinder 401 contracts, the L-shaped plate 406 can be retracted between the two connecting plates 404. At the same time, when the adjusting cylinder 401 is in a fully contracted state, there is still an angle less than 180 degrees between the adjusting cylinder 401 and the L-shaped plate 406, ensuring that the L-shaped plate 406 can be smoothly swung out when the adjusting cylinder 401 extends.

[0065] An inclined portion 403 is provided at the end of each swing arm 49 away from the adjusting cylinder 401. The inclined portion 403 faces the corresponding auxiliary cylinder 46. The end of the spring rod 407 is arc-shaped.

[0066] Specifically, when the cylinder head 25 is installed, the auxiliary cylinder 46 contracts by a certain distance, so that the end arc position of the spring rod 407 fits against the cylinder liner 22. Then, the two third electric slide rails 44 operate, causing the two auxiliary cylinders 46 to move away from each other, synchronously driving the auxiliary plates 47 to move away from each other. The spring rod 407 presses against the cylinder liner 22, and the cylinder liner 22 exerts a reaction force, causing the spring rod 407 to contract. In this state, the L-shaped plate 406 extends from between the two connecting plates 404. When the cylinder head 25 is assembled, its side wall first fits against the side wall inclined surface of the L-shaped plate 406. As the cylinder head 25 continues to penetrate, the auxiliary plates 47 gradually separate. The side wall of the cylinder head 25 slides on the side wall inclined surface of the L-shaped plate 406 until it completely slides out. Then, the cylinder head 25 fits against and gradually slides away from the inclined portion 403 at the end of the swing arm 49. When the cylinder head 25 is about to fit against the cylinder gasket 24, the swing arm 49 moves away from between the cylinder head 25 and the cylinder gasket 24, and then the cylinder head 25 completes the fit with the cylinder gasket 24. This operation can ensure that during the assembly process of the cylinder head 25, the cylinder gasket 24 always remains in a fitting state with the diesel engine main body 21, preventing the cylinder liner 22 from shifting and causing the cylinder gasket 24 to shift, and preventing the cylinder liner 22 from cracking.

[0067] Embodiment 3: During the installation process of the diesel engine cylinder gasket 24, since the cylinder gasket 24 is usually made of a flexible material, it is prone to deformation when placed. When there is oil or impurities on the guide posts, this deformation may cause friction between the cylinder gasket 24 and the guide posts, and the oil will be scraped up and adhered to the surface of the cylinder gasket 24. After the cylinder head 25 is installed, the oil or impurities on the surface of the cylinder gasket 24 will affect the sealing performance, causing problems such as coolant leakage and poor combustion chamber sealing.

[0068] For this reason, refer to Figure 5 、 Figure 8 and Figure 9 On the same side of the two second electric slide rails 41, an auxiliary frame 43 is slidably connected, and a cleaning assembly 5 is installed on the auxiliary frame 43. Before the cylinder gasket 24 is installed, the cleaning assembly 5 first cleans the impurities and oil on the positioning posts 23. The specific structure of the cleaning assembly 5 is as follows:

[0069] Refer to Figure 8 and Figure 9, the cleaning component 5 includes a displacement cylinder 51 horizontally installed on the side wall of the auxiliary frame 43. The piston rod of the displacement cylinder 51 penetrates through the auxiliary frame 43 and is connected to a vertical plate 52. A cross bracket 53 is installed at the bottom of the side of the vertical plate 52 away from the auxiliary frame 43. A sleeve 54 is communicated with each extension arm of the cross bracket 53. An extrusion mechanism 55 is installed at the bottom of the side of the vertical plate 52 close to the auxiliary frame 43. When the diesel engine main body 21 moves to the position of the cleaning component 5, the displacement cylinder 51 drives the vertical plate 52, the cross bracket 53, the sleeve 54 and the extrusion mechanism 55 to move simultaneously. The sleeve 54 on the cross bracket 53 is sleeved outside the positioning column 23. At the same time, the extrusion mechanism 55 follows and is sleeved outside the positioning column 23. The inner diameter of the sleeve 54 and the inner diameter of the extrusion mechanism 55 are both larger than the outer diameter of the positioning column 23. The sleeve 54 and the extrusion mechanism 55 do not contact the positioning column 23 when moving towards the positioning column 23. When moving in the reverse direction, the inner diameter of the extrusion mechanism 55 shrinks and fits with the positioning column 23. As it moves in the reverse direction, the extrusion mechanism 55 can scrape off the impurities and oil stains on the surface of the positioning column 23. The specific structure of the extrusion mechanism 55 is as follows:

[0070] Refer to Figure 9 , the extrusion mechanism 55 includes a plate body 551 installed at the bottom of the side of the vertical plate 52 close to the auxiliary frame 43 and four electric chucks 554 arranged between the plate body 551 and the vertical plate 52. The four electric chucks 554 are arranged corresponding to the four sleeves 54.

[0071] Four gears 552 are arranged on the side of the plate body 551 close to the vertical plate 52. Every two horizontally arranged gears 552 are in a group and mesh with each other. A support arm 553 is connected to the side wall of each gear 552. The four support arms 553 are arranged corresponding to the four electric chucks 554. The electric chucks 554 are installed on the side walls of the corresponding support arms 553. Two servo motors 555 are installed on the side of the plate body 551 away from the vertical plate 52. The two servo motors 555 are connected to the centers of two of the gears 552 arranged vertically. The two servo motors 555 are used to drive the corresponding gears 552 to rotate. The two gears 552 drive the gears 552 in the same group to mesh and rotate respectively. At this time, the four gears 552 rotate simultaneously and drive the corresponding support arms 553 to move. The support arms 553 drive the corresponding electric chucks 554 to displace, so as to move the electric chucks 554 to the position corresponding to the positioning column 23. And the inner diameter of the electric chucks 554 is adjustable, which is convenient for subsequent cleaning operations.

[0072] Specifically, before the cylinder gasket 24 is sleeved, first, the displacement cylinder 51 drives the vertical plate 52, the cross bracket 53, the sleeve 54, and the extrusion mechanism 55 to move simultaneously. The sleeve 54 on the cross bracket 53 is sleeved outside the positioning column 23. At the same time, the four electric chucks 554 follow and are sleeved outside the positioning column 23. The inner diameter of the sleeve 54 and the inner diameter of the electric chuck 554 are both larger than the outer diameter of the positioning column 23. When the sleeve 54 and the extrusion mechanism 55 move towards the positioning column 23, they do not contact the positioning column 23. When the cross bracket 53 fits with the cylinder sleeve 22, the displacement cylinder 51 contracts, and the vertical plate 52, the cross bracket 53, the sleeve 54, and the extrusion mechanism 55 move in the reverse direction. The inner diameter of the electric chuck 554 shrinks and fits with the positioning column 23. With the reverse movement, the electric chuck 554 can scrape off the impurities and oil stains on the surface of the positioning column 23.

[0073] After that, the placing mechanism 34 places the cylinder gasket 24. After the placement is completed, the cleaning assembly 5 runs again, that is, the displacement cylinder 51 drives the vertical plate 52, the cross bracket 53, the sleeve 54, and the extrusion mechanism 55 to move simultaneously. In this state, the four support arms 553 swing, causing the four electric chucks 554 to be misaligned with the four sleeves 54. Only the sleeve 54 on the cross bracket 53 assists in pushing the insertion part of the cylinder gasket 24 and the positioning column 23, ensuring that the deformation degree of the cylinder gasket 24 is reduced during the sleeving process and enabling the cylinder gasket 24 to be successfully sleeved and placed.

[0074] After the cylinder gasket 24 is placed, the swing arm 49 and the spring rod 407 are used in cooperation to assist in positioning the cylinder sleeve 22. The cleaning assembly 5 and the auxiliary frame 43 move upward and leave the corresponding position of the cylinder sleeve 22. The placing mechanism 34 runs again to transfer and place the cylinder head 25, and then the auxiliary installation can be carried out through the installation mechanism 33.

[0075] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

Claims

1. An automatic assembly device for a cylinder head of a diesel engine, characterized in that: It comprises a conveying mechanism (1), a diesel engine assembly (2) and an auxiliary assembly (4) arranged on the top of the conveying mechanism (1), a cleaning assembly (5) installed on the auxiliary assembly (4), and an assembly assembly (3) arranged on one side of the conveying mechanism (1); The diesel engine assembly (2) comprises a diesel engine body (21), a cylinder gasket (24) and a cylinder head (25); a cylinder liner (22) and four positioning columns (23) are provided on one side of the diesel engine body (21); The auxiliary component (4) comprises two second electric slide rails (41) vertically mounted on the top of the conveying mechanism (1); a third electric slide rail (44) is horizontally mounted on opposite sides of the two second electric slide rails (41); a slide plate (45) is slidably connected to the top of the third electric slide rail (44); an auxiliary cylinder (46) is mounted on the top of the slide plate (45); a piston rod of the auxiliary cylinder (46) is connected to an auxiliary plate (47); two swing arms (49) are arranged on the side wall of the auxiliary plate (47); a spring rod (407) is mounted on the side of the two swing arms (49) close to the conveying mechanism (1); A fixed plate (48) is installed on the side wall of each auxiliary plate (47); two swing arms (49) on the side wall of each auxiliary plate (47) are hinged to the corresponding fixed plate (48); an adjusting cylinder (401) is installed on the side wall of each auxiliary plate (47); a piston rod of the adjusting cylinder (401) is connected to a moving groove (402); ends of the two swing arms (49) are slidably connected to the inside of the corresponding moving groove (402); and a spring (408) is connected between the two swing arms (49) and the moving groove (402); An inclined portion (403) is provided at one end of each swing arm (49) away from the regulating cylinder (401), and the inclined portion (403) is arranged toward the corresponding auxiliary cylinder (46); a connecting rod (42) is connected between the tops of the two second electric slide rails (41) on opposite sides; and an auxiliary frame (43) is slidably connected to the same side of the two second electric slide rails (41); Two connecting plates (404) are installed on the side wall of the fixed plate (48), and an L-shaped plate (406) is hingedly connected to one end of the two connecting plates (404) away from the corresponding regulating cylinder (401). A telescopic cylinder (405) is hingedly installed between the two connecting plates (404), and a piston rod of the telescopic cylinder (405) is hingedly connected to one end of the corresponding L-shaped plate (406) away from the connecting plate (404).

2. The automatic assembly device for a cylinder head of a diesel engine according to claim 1, characterized in that: The assembly component (3) comprises a frame (31) arranged on one side of the conveying mechanism (1) and a support plate (32) installed horizontally inside the frame (31); the internal top wall of the frame (31) is slidably connected with a mounting mechanism (33) and a placement mechanism (34).

3. The automatic assembly device for a cylinder head of a diesel engine according to claim 2, characterized in that: The mounting mechanism (33) comprises an electric mounting frame (331) slidably connected to the internal top wall of the frame (31) and an mounting support frame (332) slidably connected to the bottom of the electric mounting frame (331); a movable plate (333) is slidably connected to the mounting support frame (332); four mounting tubes (336) are horizontally arranged on the movable plate (333); four electric slide rods (334) are installed around the bottom of the mounting support frame (332); a piston rod of each electric slide rod (334) is installed with an mounting motor (335); the four mounting motors (335) are arranged corresponding to the four mounting tubes (336); and the output end of the mounting motor (335) is connected to the corresponding mounting tube (336).

4. The automatic assembly device for a cylinder head of a diesel engine according to claim 2, characterized in that: The placement mechanism (34) comprises a placement electric frame (341) slidably connected to the internal top wall of the frame (31) and a manipulator (342) mounted on the bottom of the placement electric frame (341); a first electric guide rail (343) is mounted on the output end of the manipulator (342); and two clamping cylinders (344) are slidably mounted on the side walls of the first electric guide rail (343).

5. The automatic assembly device for a cylinder head of a diesel engine according to claim 1, characterized in that: The cleaning assembly (5) comprises a displacement cylinder (51) mounted horizontally on a side wall of the auxiliary frame (43); a piston rod of the displacement cylinder (51) penetrates the auxiliary frame (43) and is connected to a vertical plate (52); a cross bracket (53) is mounted on the bottom of a side of the vertical plate (52) away from the auxiliary frame (43); each extension arm of the cross bracket (53) is connected to a sleeve (54); and a squeezing mechanism (55) is mounted on the bottom of a side of the vertical plate (52) close to the auxiliary frame (43).

6. The automatic assembly device for a cylinder head of a diesel engine according to claim 5, characterized in that: The squeezing mechanism (55) comprises a bottom plate body (551) mounted on one side of the vertical plate (52) close to the auxiliary frame (43) and four electric chucks (554) arranged between the plate body (551) and the vertical plate (52), wherein the four electric chucks (554) are arranged corresponding to the four sleeves (54).

7. The automatic assembly device for a cylinder head of a diesel engine according to claim 6, characterized in that: Four gears (552) are arranged on one side of the plate body (551) close to the vertical plate (52), wherein every two horizontally arranged gears (552) form a group and mesh with each other, and the side wall of each gear (552) is connected to a support arm (553), and the four support arms (553) are arranged correspondingly to four electric chucks (554), and the electric chucks (554) are installed on the side walls of the corresponding support arms (553), and two servo motors (555) are installed on one side of the plate body (551) away from the vertical plate (52), and the two servo motors (555) are connected to the centers of two of the gears (552) arranged vertically.

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