Engine cylinder cover cleaning device and method

Abstract

The invention relates to the technical field of engine cylinder cover manufacturing, in particular to an engine cylinder cover cleaning device and method.The cleaning device comprises an air blowing box, clamping units used for clamping objects on a dust removal pipe are arranged on the two sides of the air blowing box, the air blowing box is connected with the working end of a dust collection unit, and a three-axis platform and an air blowing nozzle are arranged at the top of the interior of the air blowing box; the air blowing nozzle comprises a vertically-arranged outer barrel, a first air inlet pipe connected with an air source is arranged at the axis of the outer barrel, an air spraying hose is fixedly installed at the bottom of the first air inlet pipe, a telescopic spraying barrel is coaxially arranged at the bottom of the outer barrel and slidably installed in the outer barrel, and an opening with the inner diameter larger than the diameter of the telescopic spraying barrel is formed in the bottom of the telescopic spraying barrel. According to the technical scheme, the air blowing nozzle can conduct air blowing cleaning on a cylinder cover below the air blowing nozzle, the air blowing hose can be inserted into a cylinder cover hole and correspondingly bent according to the trend of the hole, and the air blowing hose directly acts on the inner surface of the hole at a high pressure and a proper angle to conduct cleaning.

Description

Technical Field

[0001] The invention relates to the technical field of engine cylinder head manufacturing, and in particular to an engine cylinder head cleaning device and method. Background Art

[0002] The engine cylinder head is one of the key components of the engine, and its cleanliness has an important impact on the performance and life of the engine. The method of cleaning the engine cylinder head includes sandblasting cleaning, that is, placing the cylinder head in a sandblasting room or a dedicated sandblasting device, and the operator wearing protective equipment, starts the sandblasting equipment, and sprays sand particles onto the surface of the cylinder head with appropriate pressure. After the sandblasting is completed, the sand and dust on the surface of the cylinder head need to be blown away with compressed air, and then it can be rinsed or wiped with clean water to remove residual impurities.

[0003] Since there are many air ducts and coolant ducts in the engine cylinder head, some sand and dust impurities are easily hidden in the corners of the air ducts and coolant ducts. Air blowing cleaning cannot make the airflow blow out the impurities in the air ducts and coolant ducts, resulting in poor cleaning effect. Summary of the invention

[0004] In view of the above problems, it is necessary to provide an engine cylinder head cleaning device and method to solve the existing technical problems.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0006] An engine cylinder head cleaning device comprises an air blowing box, a feeding port is arranged at the front side of the air blowing box, a closed cover plate is installed at the feeding port, a lifting platform which is lifted and lowered in a vertical direction is arranged inside the air blowing box, clamping units for clamping objects on the lifting platform are arranged on both sides of the air blowing box, a dust removal pipe is arranged on the side of the air blowing box away from the feeding port, the dust removal pipe is connected to the working end of the dust suction unit located outside the air blowing box, a three-axis platform and a blowing nozzle are arranged on the top of the air blowing box, and the three-axis platform drives the vertically arranged blowing nozzle to move in the directions of the X-axis, the Y-axis and the Z-axis; the blowing nozzle comprises a vertically arranged outer cylinder, an outer cylinder body, and a vertically arranged outer cylinder body. A first air inlet pipe connected to an air source is provided at the axis of the cylinder body, a jet hose is fixedly installed at the bottom of the first air inlet pipe, a telescopic nozzle is coaxially provided at the bottom of the outer cylinder body, the telescopic nozzle is slidably installed in the outer cylinder body, the bottom of the telescopic nozzle has an opening whose inner diameter is larger than the diameter of the jet hose, the jet hose is inserted in the telescopic nozzle, when the air nozzle moves down to the top of the hole where the telescopic nozzle fits the cylinder cover, the outer cylinder body drives the jet hose to move down relative to the telescopic nozzle so that the jet hose is inserted into the hole of the cylinder cover; the bottom of the jet hose is blocked, a plurality of air outlet holes are provided on the side of the jet hose, and the air outlet holes are evenly spaced along the length direction of the jet hose.

[0007] Preferably, a blocking top plate is provided in the telescopic spray barrel, and a vertical connecting pipe is connected to the top of the jet hose, the connecting pipe passes through the insertion hole at the axis of the blocking top plate and extends upward and is connected to one end of the first intake pipe located in the outer cylinder body, and the outer wall of the connecting pipe is provided with a vertically extending spline groove; a mounting seat is fixedly installed on the inner wall of the outer cylinder body, and a first bevel gear and a second bevel gear are rotatably installed on the outer cylinder body, the first bevel gear is coaxially sleeved on the connecting pipe and is splinedly connected to the spline groove of the connecting pipe, the first bevel gear is meshed with the second bevel gear, and the shaft rod at the axis of the second bevel gear extends radially along the outer cylinder body to an intake chamber arranged outside the outer cylinder body; an impeller is provided in the intake chamber, the impeller is coaxially mounted on the shaft rod, the blades of the impeller are attached to the inner wall of the intake chamber, and connecting ports are provided at both ends of the intake chamber, one end of the first intake pipe located outside the outer cylinder body is connected to one of the connecting ports, and the connecting port at the other end is connected to the second intake pipe, and the other end of the second intake pipe is connected to the output end of the air source.

[0008] Preferably, a vertically extending vertical slot is provided on the telescopic nozzle, the width of the vertical slot is the same as the width of the mounting seat, and the vertical slot extends downward from the top of the telescopic nozzle to above the blocking top plate.

[0009] Preferably, a downward pressure spring is provided in the outer cylinder, which elastically connects the outer cylinder and the telescopic nozzle, and the elastic force of the downward pressure spring causes the telescopic nozzle to move downward; at least one limit block is provided on the side wall of the telescopic nozzle, and the outer cylinder is provided with a vertically extending limit slide groove, the limit block is located in the limit slide groove and moves, and a positioning block is provided at the bottom of the limit slide groove.

[0010] A connecting sleeve is coaxially arranged at one end of the first air inlet pipe located inside the outer cylinder, and the top end of the connecting pipe is rotatably mounted on the connecting sleeve.

[0011] Preferably, a sealing column is coaxially arranged at the connection between the jet hose and the connecting pipe, a bearing is coaxially arranged on the outer wall of the sealing column, and the bearing fits the inner wall of the telescopic nozzle; the telescopic nozzle is located above the sealing top plate and a sealing sleeve is rotatably installed, the sealing sleeve is spline-connected to the spline groove of the connecting pipe and seals the insertion hole.

[0012] Preferably, the clamping unit includes a base arranged on one side of the air blowing box, a mounting block is arranged on the base, a horizontally extending axial hole is arranged on the mounting block, a support arm is inserted in the axial hole, a fitting rubber is arranged on one end of the support arm located inside the air blowing box, a top plate is arranged on one end of the support arm located on the mounting block away from the air blowing box, a return spring is sleeved on the support arm, the return spring elastically connects the mounting block and the top plate, and the elastic force of the return spring causes the top plate to move toward the end away from the air blowing box; a linear drive is arranged on one end of the base located on the mounting block away from the air blowing box, the working end of the linear drive moves along the axial direction of the axial hole, a top head is arranged on the working end of the linear drive, and the top head fits the top plate to push the support arm to move.

[0013] Preferably, a first synchronous wheel is coaxially arranged on the support arm, and a second synchronous wheel is rotatably mounted on the base. The axis of the second synchronous wheel is parallel to the axis of the first synchronous wheel. The first synchronous wheel and the second synchronous wheel are connected by a synchronous belt transmission. A rotary drive for driving the second synchronous wheel to rotate is also installed on the base, and the working end of the rotary drive is transmission-connected to the second synchronous wheel.

[0014] Preferably, a ball is rotatably mounted on one end of the plug facing the top plate, and the ball protrudes from the surface of the plug to contact the top plate.

[0015] A method for cleaning an engine cylinder head, applied to an engine cylinder head cleaning device, comprises the following steps:

[0016] Step 1: The staff opens the closed cover plate and puts the cylinder cover into the placement table in the air blowing box through the feed port;

[0017] Step 2: The placing table starts to clamp the two ends of the cylinder head, and the three-axis platform drives the blowing nozzle to blow air to the cylinder head;

[0018] Step 3: The three-axis platform drives the air blowing nozzle to move above the hole of the cylinder head. The three-axis platform drives the air blowing nozzle to descend so that the air jet hose of the air blowing nozzle fits above the hole. When the outer cylinder body descends, the air jet hose is inserted into the hole, and the gas is ejected through the air outlet of the air jet hose to blow the inner wall of the hole of the cylinder head.

[0019] Step 4: The dust collection unit sucks the dust and impurities generated in the air blowing box and processes them uniformly.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] Firstly, the unique structural design of the air blowing nozzle in the present invention enables the air blowing nozzle to not only perform air blowing cleaning on the cylinder head below, but also enable the air jet hose to be inserted into the cylinder head hole and bend accordingly according to the direction of the hole, so as to directly act on the inner surface of the hole with higher pressure and appropriate angle. Compared with traditional cleaning methods, the efficiency and quality of cleaning inside the hole are significantly improved.

[0022] Secondly, the present invention utilizes the gas flow in the air intake cavity to drive the impeller, and uses bevel gear transmission to realize the rotation of the jet hose. The rotating jet of the jet hose in the hole can effectively solve the cleaning blind spot problem when cleaning the cylinder head hole in the traditional fixed jet method. For the complex shape and structure in the cylinder head hole, the rotating jet can impact dust and impurities from all angles, ensuring that the hole is cleaned in all directions, greatly improving the thoroughness of cleaning.

[0023] Thirdly, the clamping unit in the present invention clamps the cylinder cover by means of support arms that move horizontally on both sides and drives the cylinder cover to rotate, thereby adjusting the direction of the holes on the cylinder cover, making it easier for the three-axis platform to drive the blowing nozzle to be inserted into holes on different surfaces for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional diagram of an engine cylinder head cleaning device in a first working state;

[0025] Figure 2 is a top view of an engine cylinder head cleaning device in a first working state;

[0026] Figure 3 yes Figure 2 A cross-sectional view at AA of FIG.

[0027] Figure 4 yes Figure 3 A partial enlarged view of point B;

[0028] Figure 5 yes Figure 3 A partial enlarged view of point C;

[0029] Figure 6 It is a three-dimensional structural exploded diagram of an engine cylinder head cleaning device;

[0030] Figure 7 The present invention is a stereoscopic diagram of an air blowing nozzle of an engine cylinder head cleaning device in a second working state;

[0031] Figure 8 It is a front view of an air blowing nozzle of an engine cylinder head cleaning device in a second working state;

[0032] Fig. 9 yes Figure 8 Cross-sectional view at DD of FIG.

[0033] Fig.10 yes Figure 8 A three-dimensional cross-sectional view at DD;

[0034] Fig.11 The figure is a side view of an air blowing nozzle of an engine cylinder head cleaning device in a second working state;

[0035] Fig.12 yes Fig.11 A cross-sectional view at EE of FIG.

[0036] Fig.13 It is a three-dimensional structural exploded diagram of an air blowing nozzle of an engine cylinder head cleaning device;

[0037] Fig.14 yes Fig.13 A partial enlarged view of point F.

[0038] The numbers in the figure are: 1, air blowing box; 11, feeding port; 111, closing cover; 12, placing table; 13, dust removal pipe; 2, clamping unit; 21, base; 211, mounting block; 212, shaft hole; 22, support arm; 221, laminating rubber; 222, top plate; 223, return spring; 224, first synchronous wheel; 23, linear drive; 231, top head; 232, ball; 24, second synchronous wheel; 241, synchronous belt; 242, rotary drive; 3, dust suction unit; 4, three-axis platform; 5, air blowing nozzle; 51, outer cylinder; 511, Mounting seat; 512, first bevel gear; 513, second bevel gear; 514, shaft; 515, air inlet chamber; 516, impeller; 517, limit slide; 518, positioning block; 52, first air inlet pipe; 521, second air inlet pipe; 522, connecting sleeve; 53, jet hose; 531, air outlet; 532, connecting pipe; 533, spline groove; 534, blocking column; 535, bearing; 54, telescopic spray gun; 541, blocking top plate; 542, insertion hole; 543, vertical slot; 544, limit block; 545, blocking sleeve; 55, downward pressure spring. DETAILED DESCRIPTION

[0039] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] Reference Figures 1 to 14 :

[0041] An engine cylinder head cleaning device comprises an air blowing box 1, and a feed port 11 (such as Figure 6 As shown), a closed cover plate 111 is installed at the feed port 11, a lifting platform 12 that can be lifted and lowered in the vertical direction is arranged inside the air blowing box 1, and clamping units 2 for clamping objects on the lifting platform 12 are arranged on both sides of the air blowing box 1, and a dust removal pipe 13 is arranged on the side of the air blowing box 1 away from the feed port 11, and the dust removal pipe 13 is connected to the working end of the dust suction unit 3 located outside the air blowing box 1, and a three-axis platform 4 and a blowing nozzle 5 are arranged on the top of the air blowing box 1 (as shown in FIG. Figure 6 As shown), the three-axis platform 4 drives the vertically arranged blowing nozzle 5 to move in the X-axis, Y-axis and Z-axis directions; the blowing nozzle 5 includes a vertically arranged outer cylinder 51, and a first air inlet pipe 52 connected to the air source is arranged at the axis of the outer cylinder 51 (as shown in FIG. Figure 4As shown), a jet hose 53 is fixedly installed at the bottom of the first air inlet pipe 52, and a telescopic nozzle 54 is coaxially arranged at the bottom of the outer cylinder 51. The telescopic nozzle 54 is slidably installed in the outer cylinder 51. The bottom of the telescopic nozzle 54 has an opening with an inner diameter larger than the diameter of the jet hose 53. The jet hose 53 is inserted in the telescopic nozzle 54. When the blowing nozzle 5 moves down to the top of the hole where the telescopic nozzle 54 fits the cylinder head, the outer cylinder 51 drives the jet hose 53 to move down relative to the telescopic nozzle 54 so that the jet hose 53 is inserted into the hole of the cylinder head; the bottom of the jet hose 53 is blocked, and a plurality of air outlet holes 531 are arranged on the side of the jet hose 53, and the air outlet holes 531 are evenly spaced along the length direction of the jet hose 53.

[0042] When the present application is in use, the staff first opens the closed cover plate 111 at the feed port 11 of the air blowing box 1, places the engine cylinder head to be cleaned on the lifting platform 12 in the air blowing box 1, and then closes the closed cover plate 111. The clamping units 2 on both sides of the air blowing box 1 are started to stably clamp the cylinder head placed on the lifting platform 12 to ensure that it will not be displaced during the cleaning process. The blowing nozzle 5 gradually moves downward under the drive of the three-axis platform 4. The three-axis platform 4 of this implementation can be formed by assembling multiple slides, so that the blowing nozzle 5 can be driven to move in the X-axis, Y-axis and Z-axis directions, so that it reaches the top of the cylinder head for air blowing cleaning. The blowing nozzle 5 in this embodiment is composed of an outer cylinder 51 and a telescopic spray barrel 54. The gas transported by the air source enters the jet hose 53 through the first air inlet pipe 52, and then enters the telescopic spray barrel 54 through the air outlet 531 on the side of the jet hose 53, and sprays out from the opening at the bottom of the telescopic spray barrel 54 to achieve the effect of air blowing. When the three-axis platform 4 drives the air blowing nozzle 5 to move to the hole on the cylinder head in the same straight line, the three-axis platform 4 drives the air blowing nozzle 5 to move downward, and the telescopic nozzle 54 stops moving when it contacts the top of the hole in the cylinder head. The outer cylinder 51 continues to move downward, driving the jet hose 53 to move downward relative to the telescopic nozzle 54, so that the jet hose 53 is inserted into the hole of the cylinder head. At this time, the gas ejected by the jet hose 53 can directly perform strong jet cleaning on the cylinder head hole to ensure the cleaning effect of the cylinder head. During the air blowing cleaning process, the dust suction unit 3 connected to the dust removal pipe 13 works synchronously, and the dust, impurities, etc. generated during the air blowing process are sucked away through the dust removal pipe 13. In this embodiment, the unique structural design of the air blowing nozzle 5 allows the jet hose 53 to be inserted into the cylinder head hole and bend accordingly according to the direction of the hole, directly acting on the inner surface of the hole with a higher pressure and a suitable angle, and efficiently removing dust, oil and other pollutants in the hole. Compared with the traditional cleaning method, the efficiency and quality of cleaning in the hole are significantly improved.

[0043] In order to achieve the purpose of rotating the jet hose 53 in the hole, the following features are specifically set:

[0044] The telescopic spray tube 54 is provided with a blocking top plate 541, the top of the spray hose 53 is connected to a vertical connecting pipe 532, and the connecting pipe 532 passes through an insertion hole 542 (such as Fig. 9 The connecting pipe 532 is provided with a vertically extending spline groove 533 (as shown in FIG. Fig.13 As shown); a mounting seat 511 is fixedly installed on the inner wall of the outer cylinder 51, and a first bevel gear 512 and a second bevel gear 513 are rotatably installed on the outer cylinder 51. The first bevel gear 512 is coaxially sleeved on the connecting pipe 532 and spline-connected with the spline groove 533 of the connecting pipe 532. The first bevel gear 512 is meshed and connected with the second bevel gear 513. The shaft 514 at the axis of the second bevel gear 513 extends radially along the outer cylinder 51 to the air intake chamber 515 arranged outside the outer cylinder 51; an impeller 516 is arranged in the air intake chamber 515, and the impeller 516 is coaxially installed on the shaft 514. The blades of the impeller 516 fit the inner wall of the air intake chamber 515. Connecting ports are arranged at both ends of the air intake chamber 515. One end of the first air intake pipe 52 located outside the outer cylinder 51 is connected to one of the connecting ports, and the connecting port at the other end is connected to the second air intake pipe 521 (as shown in FIG. Figure 8 As shown), the other end of the second air inlet pipe 521 is connected to the output end of the air source.

[0045] In this embodiment, the gas outputted by the gas source enters the air inlet chamber 515 through the second air inlet pipe 521, then enters the connecting pipe 532 through the first air inlet pipe 52, and finally reaches the jet hose 53. At this time, the jet hose 53 can perform jetting operation. When the gas flows in the air inlet chamber 515, due to the dynamic effect of the gas, it impacts the blades of the impeller 516. Because the blades fit the inner wall of the air inlet chamber 515, the gas pushes the impeller 516 to rotate around the shaft 514. The rotation of the impeller 516 drives the shaft 514 to rotate, thereby rotating the second bevel gear 513. Since the first bevel gear 512 is meshed with the second bevel gear 513, the rotation of the second bevel gear 513 drives the first bevel gear 512 to rotate. The first bevel gear 512 is connected to the connecting pipe 532 by a spline, driving the connecting pipe 532 to rotate, so that the jet hose 53 rotates and jets in the hole. In this embodiment, the impeller 516 is driven by the gas flow in the air inlet cavity 515, and the rotation of the jet hose 53 is realized by means of bevel gear transmission. The rotating jet of the jet hose 53 in the hole can effectively solve the cleaning blind spot problem existing in the traditional fixed jet method when cleaning the cylinder head hole. For the complex shape and structure in the cylinder head hole, the rotating jet can impact dust and impurities from all angles, ensuring that the hole is cleaned in all directions, greatly improving the thoroughness of cleaning.

[0046] In order to ensure that the telescopic spray tube 54 can move upward relative to the outer cylinder 51 and enter the inner part of the outer cylinder 51, the following features are specifically provided:

[0047] The telescopic spray barrel 54 is provided with a vertically extending vertical slot 543 (such as Fig.13 As shown), the width of the vertical slot 543 is the same as the width of the mounting seat 511, and the vertical slot 543 extends downward from the top of the telescopic spray tube 54 to above the blocking top plate 541.

[0048] The telescopic nozzle 54 in this embodiment is provided with a vertical groove 543 with the same width as the mounting seat 511. When the outer cylinder 51 moves downward relative to the telescopic nozzle 54, the mounting seat 511 moves in the vertical groove 543 of the telescopic nozzle 54, ensuring that the vertical movement of the outer cylinder 51 is not affected. The bottom of the vertical groove 543 extends to above the blocking top plate 541, and therefore will not affect the downward direction of the airflow blown out by the jet hose 53.

[0049] In order to ensure that the telescopic nozzle 54 of the blowing nozzle 5 can be reset to the initial state after the three-axis platform 4 drives the blowing nozzle 5 to move upward, the following features are specifically set:

[0050] A downward pressure spring 55 is disposed in the outer cylinder 51, and the downward pressure spring 55 elastically connects the outer cylinder 51 and the telescopic spray tube 54. The elastic force of the downward pressure spring 55 causes the telescopic spray tube 54 to move downward. At least one limit block 544 (such as Fig.14 As shown), the outer cylinder 51 is provided with a vertically extending limiting slide groove 517, the limiting block 544 is located in the limiting slide groove 517 and moves, and a positioning block 518 is provided at the bottom end of the limiting slide groove 517.

[0051] The limit block 544 on the outer wall of the telescopic nozzle 54 in this embodiment is slidably mounted in the limit slot 517 inside the outer cylinder 51, thereby ensuring that the mounting seat 511 is always in the vertical slot 543 of the telescopic nozzle 54, and ensuring the stability of the telescopic nozzle 54 in the vertical direction. The downward elastic force of the downward pressure spring 55 in the outer cylinder 51 on the telescopic nozzle 54 ensures that the telescopic nozzle 54 moves downward to the positioning block 518 at the bottom of the limit slot 517 where the limit block 544 fits. When the telescopic nozzle 54 is in this position, it is the initial state of the blowing nozzle 5. When the bottom of the telescopic nozzle 54 fits the cylinder cover, the outer cylinder 51 moves downward and compresses the downward pressure spring 55.

[0052] In order to ensure that the rotation of the jet hose 53 does not affect the air intake effect of the first air intake pipe 52, the following features are specifically set:

[0053] A connecting sleeve 522 is coaxially arranged at one end of the first air inlet pipe 52 located inside the outer cylinder 51 , and the top end of the connecting pipe 532 is rotatably mounted on the connecting sleeve 522 .

[0054] The connecting pipe 532 at the top of the jet hose 53 in this embodiment is rotatably connected to the connecting sleeve 522 at the bottom of the first air inlet pipe 52. Therefore, when the jet hose 53 and the air outlet 531 rotate, the connecting pipe 532 maintains a coaxial connection relationship with the first air inlet pipe 52, ensuring that the gas entering the first air inlet pipe 52 enters the connecting pipe 532 and then enters the jet hose 53 for discharge.

[0055] In order to ensure that the gas delivered by the first air inlet pipe 52 is ejected only below the telescopic nozzle 54, the following features are specifically provided:

[0056] A blocking column 534 is coaxially arranged at the connection between the jet hose 53 and the connecting pipe 532, and a bearing 535 is coaxially arranged on the outer wall of the blocking column 534, and the bearing 535 fits the inner wall of the telescopic nozzle 54; the telescopic nozzle 54 is located above the blocking top plate 541 and is rotatably installed with a blocking sleeve 545, which is spline-connected to the spline groove 533 of the connecting pipe 532 and blocks the insertion hole 542.

[0057] The sealing column 534 at the connection between the jet hose 53 and the connecting pipe 532 in this embodiment cooperates with the bearing 535 to fit the inner wall of the telescopic nozzle 54. The existence of the bearing 535 ensures that the jet hose 53 rotates smoothly when moving relative to the telescopic nozzle 54. The gap between the insertion hole 542 of the sealing top plate 541 and the spline groove 533 of the connecting pipe 532 is blocked by the sealing sleeve 545 set on the upper side of the sealing top plate 541, ensuring that the gas discharged from the jet hose 53 into the telescopic nozzle 54 can only be ejected through the opening below the telescopic nozzle 54, thereby protecting the blowing nozzle 5 from the jet direction.

[0058] In order to achieve the purpose of inserting the vertical blowing nozzle 5 into holes on different surfaces and at different inclination angles on the cylinder head for soot blowing, the following features are specifically set:

[0059] The clamping unit 2 includes a base 21 (such as Figure 6 As shown), the base 21 is provided with a mounting block 211 (as shown Figure 5 As shown), a horizontally extending shaft hole 212 is provided on the mounting block 211, a support arm 22 is inserted in the shaft hole 212, a fitting rubber 221 is provided at one end of the support arm 22 located inside the air blowing box 1, a top plate 222 is provided at the end of the support arm 22 located at the mounting block 211 away from the air blowing box 1, a return spring 223 is sleeved on the support arm 22, the return spring 223 elastically connects the mounting block 211 and the top plate 222, the elastic force of the return spring 223 causes the top plate 222 to move toward the end away from the air blowing box 1; a linear drive 23 is provided at one end of the base 21 located at the mounting block 211 away from the air blowing box 1, the working end of the linear drive 23 moves along the axial direction of the shaft hole 212, a top head 231 is provided on the working end of the linear drive 23, and the top head 231 fits the top plate 222 to push the support arm 22 to move.

[0060] A first synchronous wheel 224 is coaxially arranged on the support arm 22, and a second synchronous wheel 24 is rotatably mounted on the base 21. The axis of the second synchronous wheel 24 is parallel to the axis of the first synchronous wheel 224. The first synchronous wheel 224 and the second synchronous wheel 24 are connected by a synchronous belt 241. A rotating driver 242 for driving the second synchronous wheel 24 to rotate is also installed on the base 21, and the working end of the rotating driver 242 is connected to the second synchronous wheel 24 by transmission.

[0061] The linear drive 23 in this embodiment can be a cylinder or an electric push rod, etc. The linear drive 23 pushes the top plate 222 of the support arm 22 through the top head 231, and the top plate 222 drives the support arm 22 to compress the return spring 223 and approach the cylinder cover in the air blowing box 1 until the fitting rubber 221 on the support arm 22 fits the cylinder cover, and the fitting rubber 221 of the clamping units 2 on both sides fits the cylinder cover to clamp and fix the cylinder cover. At this time, the placement table 12 can move down, and a cylinder or an electric push rod that pushes the placement table 12 to move in the vertical direction can be set at the bottom of the placement table 12. Any structure or device that realizes the lifting function of the placement table 12 is available. After the placement table 12 moves down, the rotation drive 242 can be started, and the rotation drive 242 drives the second synchronous wheel 24 to rotate and drives the first synchronous wheel 224 on the support arm 22 to rotate through the synchronous belt 241, so that the support arm 22 and the cylinder cover clamped by the support arm 22 rotate, and the direction of the hole on the cylinder cover is adjusted, so that the three-axis platform 4 can drive the blowing nozzle 5 to insert into the holes on different surfaces for cleaning. The rotation driver 242 in this embodiment may be a servo motor or the like.

[0062] In order to avoid a large amount of friction between the top plate 222 and the top head 231 when the support arm 22 rotates, the following features are specifically provided:

[0063] A ball 232 is rotatably mounted on one end of the plug 231 facing the top plate 222 . The ball 232 protrudes from the surface of the plug 231 and contacts the top plate 222 .

[0064] The ball 232 disposed on the side of the top head 231 facing the top plate 222 in this embodiment can convert the sliding friction force into rolling friction force when the top plate 222 rotates, thereby ensuring smooth rotation of the support arm 22.

[0065] A method for cleaning an engine cylinder head, applied to an engine cylinder head cleaning device, comprises the following steps:

[0066] Step 1: The staff opens the closed cover plate 111 and places the cylinder cover onto the placement table 12 in the air blowing box 1 through the feed port 11;

[0067] Step 2: The placing table 12 is started to clamp the two ends of the cylinder head, and the three-axis platform 4 drives the blowing nozzle 5 to blow air to the cylinder head;

[0068] Step 3: The three-axis platform 4 drives the air blowing nozzle 5 to move to the top of the hole of the cylinder head. The three-axis platform 4 drives the air blowing nozzle 5 to descend so that the air jet hose 53 of the air blowing nozzle 5 fits the top of the hole. When the outer cylinder 51 descends, the air jet hose 53 is inserted into the hole, and the gas is ejected through the air outlet 531 of the air jet hose 53 to blow the inner wall of the hole of the cylinder head.

[0069] Step 4: The dust suction unit 3 sucks the dust and impurities generated in the air blowing box 1 and processes them uniformly.

[0070] Working principle: The staff first opens the closed cover plate 111 at the feed port 11 of the air blowing box 1, places the engine cylinder head to be cleaned on the lifting platform 12 in the air blowing box 1, and then closes the closed cover plate 111. The clamping units 2 on both sides of the air blowing box 1 are started to stably clamp the cylinder head placed on the lifting platform 12, and the air blowing nozzle 5 gradually moves downward under the drive of the three-axis platform 4, so that it reaches the top of the cylinder head for air blowing cleaning. When the three-axis platform 4 drives the air blowing nozzle 5 to move to the hole on the cylinder head on the same straight line, the three-axis platform 4 drives the air blowing nozzle 5 to move downward, and the telescopic spray tube 54 stops moving when it contacts the top of the hole of the cylinder head. The outer cylinder 51 continues to move downward, driving the jet hose 53 to move downward relative to the telescopic spray tube 54, so that the jet hose 53 is inserted into the hole of the cylinder head. At this time, the gas sprayed by the jet hose 53 can directly perform strong jet cleaning on the cylinder head hole to ensure the cleaning effect of the cylinder head. During the air blowing cleaning process, the dust suction unit 3 connected to the dust removal pipe 13 works synchronously to suck away dust, impurities and the like generated during the air blowing process through the dust removal pipe 13 .

[0071] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. An engine cylinder head cleaning device, comprising an air blowing box (1), a feed inlet (11) is arranged at the front side of the air blowing box (1), a closed cover plate (111) is installed at the feed inlet (11), a lifting platform (12) which can be lifted and lowered in a vertical direction is arranged inside the air blowing box (1), clamping units (2) for clamping objects on the lifting platform (12) are arranged on both sides of the air blowing box (1), a dust removal pipe (13) is arranged on the side of the air blowing box (1) away from the feed inlet (11), and the dust removal pipe (13) is connected to the working end of the dust suction unit (3) located outside the air blowing box (1), characterized in that: A three-axis platform (4) and a blowing nozzle (5) are arranged at the top of the air blowing box (1), and the three-axis platform (4) drives the vertically arranged blowing nozzle (5) to move in the directions of the X-axis, the Y-axis and the Z-axis; The air blowing nozzle (5) comprises an outer cylinder (51) arranged vertically, a first air inlet pipe (52) connected to an air source is arranged at the axis of the outer cylinder (51), an air jet hose (53) is fixedly installed at the bottom of the first air inlet pipe (52), a telescopic spray tube (54) is coaxially arranged at the bottom of the outer cylinder (51), the telescopic spray tube (54) is slidably installed in the outer cylinder (51), the bottom of the telescopic spray tube (54) has an opening whose inner diameter is larger than the diameter of the air jet hose (53), the air jet hose (53) is inserted in the telescopic spray tube (54), when the air blowing nozzle (5) moves down to the top of the hole where the telescopic spray tube (54) fits the cylinder head, the outer cylinder (51) drives the air jet hose (53) to move downward relative to the telescopic spray tube (54) so ​​that the air jet hose (53) is inserted into the hole of the cylinder head; The bottom of the jet hose (53) is blocked, and a plurality of air outlet holes (531) are arranged on the side of the jet hose (53), and the air outlet holes (531) are evenly spaced along the length direction of the jet hose (53).

2. The engine cylinder head cleaning device according to claim 1, characterized in that: The telescopic spray cylinder (54) is provided with a blocking top plate (541), the top of the spray hose (53) is connected to a vertical connecting pipe (532), the connecting pipe (532) passes through the insertion hole (542) at the axis of the blocking top plate (541), extends upward and is connected to one end of the first air inlet pipe (52) located in the outer cylinder (51), and the outer wall of the connecting pipe (532) is provided with a vertically extending spline groove (533); The inner wall of the outer cylinder (51) is fixedly mounted with a mounting seat (511); a first bevel gear (512) and a second bevel gear (513) are rotatably mounted on the outer cylinder (51); the first bevel gear (512) is coaxially sleeved on the connecting pipe (532) and spline-connected with the spline groove (533) of the connecting pipe (532); the first bevel gear (512) is meshingly connected with the second bevel gear (513); and a shaft (514) at the axis of the second bevel gear (513) extends radially along the outer cylinder (51) to an air inlet cavity (515) arranged outside the outer cylinder (51); An impeller (516) is arranged in the air inlet cavity (515), and the impeller (516) is coaxially mounted on the shaft (514). The blades of the impeller (516) fit the inner wall of the air inlet cavity (515). Connecting ports are arranged at both ends of the air inlet cavity (515). One end of the first air inlet pipe (52) located outside the outer cylinder (51) is connected to one of the connecting ports, and the connecting port at the other end is connected to the second air inlet pipe (521). The other end of the second air inlet pipe (521) is connected to the output end of the air source.

3. The engine cylinder head cleaning device according to claim 2, characterized in that: The telescopic spray barrel (54) is provided with a vertically extending vertical slot (543), the width of the vertical slot (543) being the same as the width of the mounting seat (511), and the vertical slot (543) extending downward from the top of the telescopic spray barrel (54) to above the blocking top plate (541).

4. The engine cylinder head cleaning device according to claim 2, characterized in that: A downward pressure spring (55) is arranged inside the outer cylinder (51), and the downward pressure spring (55) elastically connects the outer cylinder (51) and the telescopic spray tube (54), and the elastic force of the downward pressure spring (55) causes the telescopic spray tube (54) to move downward; The side wall of the telescopic spray barrel (54) is provided with at least one limit block (544), the outer cylinder (51) is provided with a vertically extending limit slide groove (517), the limit block (544) is located in the limit slide groove (517) and moves, and a positioning block (518) is provided at the bottom end of the limit slide groove (517).

5. The engine cylinder head cleaning device according to claim 2, characterized in that: A connecting sleeve (522) is coaxially arranged at one end of the first air inlet pipe (52) located inside the outer cylinder (51), and the top end of the connecting pipe (532) is rotatably mounted on the connecting sleeve (522).

6. The engine cylinder head cleaning device according to claim 2, characterized in that: A blocking column (534) is coaxially arranged at the connection point between the jet hose (53) and the connecting pipe (532), a bearing (535) is coaxially arranged on the outer wall of the blocking column (534), and the bearing (535) fits the inner wall of the telescopic spray barrel (54); The telescopic spray cylinder (54) is located above the blocking top plate (541) and is rotatably mounted with a blocking sleeve (545); the blocking sleeve (545) is spline-connected to the spline groove (533) of the connecting pipe (532) and blocks the insertion hole (542).

7. The engine cylinder head cleaning device according to claim 2, characterized in that: The clamping unit (2) comprises a base (21) arranged on one side of the air blowing box (1), a mounting block (211) being arranged on the base (21), a horizontally extending shaft hole (212) being arranged on the mounting block (211), a support arm (22) being inserted into the shaft hole (212), a fitting rubber (221) being arranged at one end of the support arm (22) located inside the air blowing box (1), a top plate (222) being arranged at one end of the support arm (22) located away from the air blowing box (1) and the mounting block (211), a return spring (223) being sleeved on the support arm (22), the return spring (223) being elastically connected to the mounting block (211) and the top plate (222), and the elastic force of the return spring (223) causing the top plate (222) to move towards the end away from the air blowing box (1); A linear drive (23) is provided at one end of the base (21) located at the mounting block (211) away from the air blowing box (1); a working end of the linear drive (23) moves along the axial direction of the shaft hole (212); a top head (231) is provided on the working end of the linear drive (23); the top head (231) is in contact with the top plate (222) to push the support arm (22) to move.

8. The engine cylinder head cleaning device according to claim 7, characterized in that: A first synchronous wheel (224) is coaxially arranged on the support arm (22), a second synchronous wheel (24) is rotatably mounted on the base (21), an axis of the second synchronous wheel (24) is parallel to an axis of the first synchronous wheel (224), the first synchronous wheel (224) and the second synchronous wheel (24) are connected in transmission via a synchronous belt (241), a rotary driver (242) for driving the second synchronous wheel (24) to rotate is also mounted on the base (21), and a working end of the rotary driver (242) is connected in transmission to the second synchronous wheel (24).

9. The engine cylinder head cleaning device according to claim 8, characterized in that: A ball (232) is rotatably mounted on one end of the top head (231) facing the top plate (222), and the ball (232) protrudes from the surface of the top head (231) and contacts the top plate (222).

10. An engine cylinder head cleaning method, applied to the engine cylinder head cleaning device according to claim 1, characterized in that: The following steps are involved: Step 1: The staff opens the closed cover plate (111) and places the cylinder cover through the feed port (11) onto the placement table (12) in the air blowing box (1); Step 2: The placement table (12) is started to clamp the two ends of the cylinder head, and the three-axis platform (4) drives the blowing nozzle (5) to blow air to the cylinder head; Step 3: The three-axis platform (4) drives the air blowing nozzle (5) to move to the top of the hole of the cylinder head. The three-axis platform (4) drives the air blowing nozzle (5) to descend so that the air jet hose (53) of the air blowing nozzle (5) fits the top of the hole. When the outer cylinder (51) descends, the air jet hose (53) is inserted into the hole, and the gas is ejected through the air outlet hole (531) of the air jet hose (53) to blow the inner wall of the hole of the cylinder head. Step 4: The dust suction unit (3) sucks the dust and impurities generated in the air blowing box (1) and processes them uniformly.

Images