A valve tappet assembly device

Abstract

This invention discloses a valve tappet assembly device, relating to the field of valve tappet assembly technology. It includes an mounting rod with a magnetic suction part for attracting the valve tappet; a release rod slidably sleeved on the mounting rod, on which multiple flaps are rotatably and circumferentially arranged; each flap includes a duckbill portion and a cavity communicating with the duckbill portion, and the duckbill portion is squeezed by the movement of the flaps to seal the cavity; and a suction mechanism communicating with the cavity, including a waste chamber disposed on the release rod. This valve tappet assembly device uses the suction mechanism to suction the cavity, drawing hydraulic oil scraped off by the duckbill portion into the waste chamber, thus cleaning the outer wall of the valve tappet and preventing hydraulic oil from remaining between the outer wall of the valve tappet and the mounting cavity to be assembled. Furthermore, under the clamping of the duckbill portion, the valve tappet is precisely inserted into the mounting cavity, completing the assembly. The overall operation process is relatively simple.

Description

Technical Field

[0001] This invention relates to the field of valve tappet assembly technology, and more specifically to a valve tappet assembly device. Background Technology

[0002] Valve tappet assembly is a crucial step in engine assembly, affecting the proper functioning of the valve system. Before assembly, ensure all components are clean and dust-free, especially the valve tappets and valve seats.

[0003] Combined with publication number CN207273146U, publication date 2018-04-27, a tool for disassembling and assembling valve tappets is disclosed, including an extension end that extends into the inner hole of the valve tappet, a control handle and a connecting rod, wherein the extension end is provided with two contact parts that protrude and retract through the control handle.

[0004] However, in the prior art, including the aforementioned patent, when hydraulic valve tappets are used, the hydraulic oil inside the valve tappet may seep into the outer wall of the valve tappet. The high temperature generated during engine operation can cause the hydraulic oil on the surface to coke. Summary of the Invention

[0005] The purpose of this invention is to provide a valve tappet assembly device to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a valve tappet assembly device, comprising an mounting rod having a magnetic suction part thereon for attracting the valve tappet;

[0007] A release rod is slidably sleeved on the mounting rod, on which multiple flaps are arranged in a circumferential array and rotate. Each flap includes a duckbill portion and a cavity communicating with the duckbill portion. The duckbill portion is squeezed by the movement of the flaps to seal the cavity.

[0008] A suction mechanism communicating with a cavity, comprising a waste residue chamber disposed on a release rod.

[0009] Preferably, it also includes a rotating member disposed at the end of the magnetic suction part, which is driven to deflect to resist the valve tappet.

[0010] Preferably, a support member with a spring is also provided on the magnetic suction part, located between the magnetic suction part and the valve tappet.

[0011] Preferably, the support member has a trigger station in its active stroke for deflecting the rotating member.

[0012] Preferably, the support member is slidably provided with an extension rod that engages with the rotating member for blocking.

[0013] Preferably, the suction mechanism further includes an air passage, and the air passage under the trigger position is unobstructed.

[0014] Preferably, the release rod is provided with an air chamber, and the mounting rod is provided with a piston that cooperates with the air chamber.

[0015] The air cavity is connected to the hollow cavity.

[0016] Preferably, it also includes a spiral guide disposed on the release rod and slidingly engaged with the rotating member, the spiral direction of which is opposite to that of the duckbill portion.

[0017] Preferably, a stop plate is provided on the duckbill portion, and the stop plate opens when the duckbill portion is squeezed.

[0018] Preferably, the side of the duckbill portion has a side opening that communicates with the cavity.

[0019] In the above technical solution, the valve tappet assembly device provided by the present invention has the following beneficial effects: by suctioning the cavity through the suction mechanism, the hydraulic oil scraped off by the duckbill is sucked into the waste chamber, so that the outer wall of the valve tappet is cleaned, and the hydraulic oil is prevented from remaining between the outer wall of the valve tappet and the mounting cavity to be assembled. Furthermore, under the clamping of the duckbill, the valve tappet is accurately inserted into the mounting cavity to complete the assembly. The overall operation process is relatively simple. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is an overall three-dimensional schematic diagram provided for an embodiment of the present invention;

[0022] Figure 2 This is an exploded view of the internal structure of the pressing head provided in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the pressing head, flap, and protruding rod structure provided in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal rotating component structure of the pressing head provided in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the rotating component structure provided in an embodiment of the present invention;

[0026] Figure 6This is a schematic diagram of the support member and magnetic suction part provided in an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the flap cavity under unobstructed conditions, provided in an embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of the internal structure of the flap cavity sealing provided in an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the initial state of the rotating component provided in an embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the deflection state of the rotating component provided in an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Mounting rod; 11. Piston; 2. Release rod; 21. Pressing head; 211. Rotating cavity; 212. Protruding rod; 213. Rotating component; 214. Air cavity; 215. Air passage; 216. Block; 217. Inlet groove; 218. Slide groove; 219. Protrusion; 22. Waste slag cavity; 23. Flip plate; 231. Guide groove; 232. Cavity; 233. Side opening; 234. Support plate; 235. Duckbill part; 24. Transmission rod; 25. Support component; 251. Spring; 252. Inclined plate; 26. Magnetic suction part; 261. Extension rod; 262. Fixing seat; 263. Torsion spring; 27. Spiral guide tube; 3. Release support. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] like Figure 1-10 As shown, a valve tappet assembly device includes an mounting rod 1, on which a magnetic suction part 26 for attracting the valve tappet is provided.

[0035] The release rod 2 is slidably sleeved on the mounting rod 1, and multiple flaps 23 are arranged in a circumferential array on it. Each flap 23 includes a duckbill portion 235 and a cavity 232 communicating with the duckbill portion 235. The duckbill portion 235 is squeezed by the movement of the flaps 23 so as to seal the cavity 232.

[0036] The suction mechanism, which is connected to the cavity 232, includes a waste residue cavity 22 disposed on the release rod 2.

[0037] Specifically, a pressing head 21 is provided at the end of the release lever 2 near the valve tappet, a flap 23 is rotatably mounted on the pressing head 21, and a release support 3 for hand gripping is provided on the release lever 2. A small motor can be installed on the flap 23, or a gear can be installed on the rotating shaft of the flap 23, with a gear ring rotatably mounted on the pressing head 21 meshing with the gear, allowing manual rotation to orient the duckbill 235 toward the outer wall of the valve tappet; or other driving methods known to those skilled in the art are also acceptable.

[0038] Furthermore, in use, the magnetic suction part 26 attracts the head of the valve tappet to the contact surface of the camshaft, and then drives multiple duckbill parts 235 toward the outer wall of the valve tappet. The mounting rod 1 is rotated manually or driven by a motor, or by other means known to those skilled in the art, so that the mounting rod 1 drives the magnetic suction part 26 to rotate.

[0039] At this time, the duckbill 235 rotates relative to the outer wall of the valve tappet, causing the hydraulic oil on the valve tappet to be scraped by the duckbill 235. The suction mechanism then sucks the hydraulic oil scraped off by the duckbill 235 into the waste chamber 22, making the outer wall of the valve tappet clean and preventing hydraulic oil from remaining between the outer wall of the valve tappet and the mounting cavity to be assembled. Then, the clean valve tappet is inserted into the mounting cavity, and the duckbill 235 is driven to rotate again. The duckbill 235 deflects and further supports the valve tappet. Then, the release support 3 is pressed down, and the mounting rod 1 is pulled away from the valve tappet. The mounting rod 1 drives the magnetic suction part 26 away from the valve tappet, causing the valve tappet to disengage from the magnetic suction part 26 and accurately enter the mounting cavity under the clamping of the duckbill 235. The overall operation process is relatively simple.

[0040] In the above technology, the suction mechanism is used to suction the cavity 232 to draw the hydraulic oil scraped off by the duckbill 235 into the waste chamber 22, so that the outer wall of the valve tappet is cleaned and the hydraulic oil is prevented from remaining between the outer wall of the valve tappet and the mounting cavity to be assembled. Under the clamping of the duckbill 235, the valve tappet is accurately inserted into the mounting cavity to complete the assembly. The overall operation process is relatively simple.

[0041] As a further embodiment of the present invention, it also includes a rotating member 213 disposed at the end of the magnetic suction part 26, which is driven to deflect to resist the valve tappet.

[0042] Specifically, the pressing head 21 has a rotating cavity 211 for rotating the rotating member 213. The rotating member 213 includes an abutment portion with an anti-slip layer. When the valve lifter is attracted by the magnetic attraction part 26, multiple rotating members 213 are driven to deflect towards the outer wall of the valve lifter, initially clamping the valve lifter. Furthermore, multi-directional, synchronous deflection prevents the valve lifter from tilting. This can be achieved by installing a pressure-sensitive switch on the magnetic attraction part 26 and a motor driving the rotating member 213. The motor automatically starts when the switch senses the valve lifter being attracted, or by making the rotating member 213 tangential to the valve lifter. As the valve lifter slides under the attraction of the magnetic attraction part 26, the rotating member 213 deflects. Alternatively, any linkage method known to those skilled in the art can be used.

[0043] As a further embodiment of the present invention, it also includes a support member 25 disposed on the magnetic suction part 26 and provided with a spring 251, which is located between the magnetic suction part 26 and the valve tappet.

[0044] Specifically, the support member 25 maintains a predetermined distance from the magnetic part 26 through the spring 251. When the valve tappet is attracted by the magnetic part 26, it will push against the support member 25 first, causing the spring 251 to contract. The elastic force of the spring 251 reduces the impact force generated when the valve tappet contacts the magnetic part 26, thereby reducing the wear of the valve tappet on the magnetic part 26.

[0045] As another embodiment of the present invention, there is a trigger station in the active stroke of the support member 25 for deflecting the rotating member 213.

[0046] Specifically, the support member 25 has an extension rod 261 that engages with the rotating member 213. The rotating member 213 has a torsion spring 263 and includes a protrusion 219. The protrusion 219 is blocked by the extension rod 261 and remains in its original position, which is the initial position. The support member 25 has multiple inclined plates 252 arranged in a circumferential array. The extension rod 261 slides radially on the magnetic suction part 26. When the magnetic suction part 26 attracts the valve tappet, the valve tappet pushes against the support member 25. This is the trigger position of the support member 25. The spring 251 contracts, and the inclined plates 252 move synchronously and push against the extension rod 261, so that the extension rod 261 no longer blocks the rotating member 213. The rotating member 213 is pressed against the side wall of the valve tappet under the elastic force of the torsion spring 263.

[0047] The rotating component 213 also includes a sliding groove 218 and a guide groove 217. The pressing head 21 is provided with a protruding rod 212. When the rotating component 213 is in the pressing state, the guide groove 217 faces the protrusion provided on the protruding rod 212. When it is necessary to release the pressing state between the rotating component 213 and the valve tappet, the rotating component 213 is moved towards the valve tappet, so that the protrusion enters the sliding groove 218 along the guide groove 217. Thus, through the cooperation between the protrusion and the sliding groove 218, the rotating component 213 is driven to deflect again, and the deflection direction is away from the valve tappet. When the protrusion moves to the point of disengaging from the sliding groove 218, the valve tappet deflects again under the action of the torsion spring 263, and then stops rotating under the pressure of the extension rod 261. At this time, the sliding groove 218 and the protrusion are misaligned.

[0048] As another embodiment of the present invention, the suction mechanism further includes an airway 215, and the airway 215 under the trigger position is unobstructed.

[0049] Specifically, the air passage 215 is opened on the press head 21, and a block 216 is slidably arranged on the air passage 215. The rotating part 213 in the initial position is blocked by the extension rod 261, and the rotating part 213 abuts against the block 216, so that the block 216 blocks the air passage 215. When the support 25 is in the trigger position, the rotating part 213 deflects, so that the block 216 loses its supporting force and is misaligned with the air passage 215 under its own weight or the airflow in the air passage 215. The air passage 215 is unobstructed and the cavity 232 is connected to the suction mechanism, so that the suction mechanism starts suction only after completing the initial clamping of the valve tappet.

[0050] As another embodiment of the present invention, the release rod 2 is provided with an air chamber 214, and the mounting rod 1 is provided with a piston 11 that cooperates with the air chamber 214.

[0051] The air cavity 214 is connected to the hollow cavity 232.

[0052] Specifically, when the mounting rod 1 is pulled away from the valve tappet, the piston 11 moves within the air chamber 214. At this time, the air chamber 214 is under negative pressure, drawing in the cavity 232. This causes the hydraulic oil scraped by the duckbill 235 to be drawn into the air chamber 214. A one-way valve is installed in the air chamber 214 to prevent hydraulic oil backflow. Furthermore, the end of the air chamber 214 is connected to the waste chamber 22 via a one-way valve. When the mounting rod 1 is moved closer to the valve tappet, the piston 11 pushes the collected hydraulic oil into the waste chamber 22 for unified cleaning.

[0053] As a further embodiment of the present invention, it also includes a spiral guide tube 27 disposed on the release rod 2 and slidingly engaged with the rotating member 213, the spiral direction of which is opposite to the direction of the duckbill portion 235.

[0054] Specifically, the magnetic suction part 26 is rotatably mounted on the mounting rod 1, and the magnetic suction part 26 is arrayed with fixed seats 262 for the rotation of the rotating member 213. During the removal of the mounting rod 1, the mounting rod 1 drives the magnetic suction part 26 and the fixed seats 262 into the spiral guide tube 27. At this time, the rotating member 213 presses against the side wall of the valve tappet and does not interfere with the spiral guide tube 27. Then, the mounting rod 1 is further removed, so that the fixed seats 262 abut against the side wall of the spiral guide tube 27 and deflect under the guidance of the spiral guide tube 27. Since the spiral direction of the spiral guide tube 27 is opposite to that of the duckbill part 235, the rotation direction of the valve tappet is towards the duckbill part 235, thereby better scraping the hydraulic oil on the surface.

[0055] As a further embodiment of the present invention, a stop plate 234 is provided on the duckbill portion 235, and the stop plate 234 opens when the duckbill portion 235 is squeezed.

[0056] Specifically, the flap 23 has a guide groove 231, and the mounting rod 1 is fixedly provided with a transmission rod 24 that slides with the guide groove 231. When the mounting rod 1 is pulled out, it drives the transmission rod 24 to move, thereby squeezing the guide groove 231 and causing the flap 23 to deflect. The greater the length of the removal of the mounting rod 1, the greater the deflection angle of the flap 23. The duckbill part 235 of the flap 23 has abutted against the outer wall of the valve tappet, so that the rotational force is converted into pressure against the valve tappet. The force exerted on the outer wall causes the end of the duckbill 235 to be squeezed, making the cavity 232 narrow and blocked. The abutment 234 is set on the pivot of the flap 23 and opens as the flap 23 continues to deflect. The abutment 234 eventually presses against the valve lifter, causing the force of the flap 23 on the valve lifter to continuously increase, eventually overcoming the attraction of the magnetic part 26 on the valve lifter. The valve lifter separates from the magnetic part 26, so that the valve lifter is clamped at the end of the pressing head 21.

[0057] Then, the mounting rod 1 is inserted. Since the valve tappet is disengaged from the magnetic suction part 26, the rotating part 213 will automatically deflect towards the support part 25 under the elastic force of the torsion spring 263 after it is no longer obstructed. The end of the rotating part 213 points towards the valve tappet. Then, the rotating part 213 is moved towards the valve tappet. Through the push of the end of the rotating part 213 and the reverse drive of the transmission rod 24 to deflect the flap 23, the valve tappet is pressed into the mounting cavity.

[0058] Furthermore, at this time, the protrusion of the protrusion 212 and the guide groove 217 on the rotating member 213 still maintain the same height, and the rotating member 213 is driven to deflect to the initial state through the cooperation of the protrusion and the slide groove 218.

[0059] As another embodiment of the present invention, the duckbill portion 235 has a side opening 233 that communicates with the cavity 232.

[0060] Specifically, an elastic membrane is provided between the duckbill part 235 and the abutment plate 234. When the abutment plate 234 is opened, a suction space is formed between the duckbill part 235, the abutment plate 234 and the elastic membranes provided above and below. The interior is suctioned through the side opening 233, thereby actively adsorbing the outer wall of the valve lifter, strengthening the fixing and clamping force, and sucking the dust generated during the assembly process into the cavity 232.

[0061] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A valve lifter assembly characterized by, The installation rod (1) is provided with a magnetic attraction part (26) for attracting the valve tappet; The disengagement rod (2) is sleeved on the installation rod (1) and is provided with a plurality of flip plates (23) in a circumferential array, the flip plates (23) comprise a duckbill part (235) and a cavity (232) in communication with the duckbill part (235), and the duckbill part (235) is pressed to be closed by the flip plates (23). The suction mechanism in communication with the cavity (232) comprises a waste cavity (22) provided on the disengagement rod (2).

2. A valve lifter assembly as set forth in claim 1, characterized in that, The rotating part (213) provided at the end of the magnetic attraction part (26) is deflected to press the valve tappet.

3. A valve lifter assembly as set forth in claim 2, characterized in that, The support part (25) provided on the magnetic attraction part (26) and provided with a spring (251) is located between the magnetic attraction part (26) and the valve tappet.

4. A valve lifter assembly as set forth in claim 3, characterized in that, The support part (25) has a trigger position for deflecting the rotating part (213) in the active stroke.

5. A valve lifter assembly as set forth in claim 4, characterized in that, The extension rod (261) in abutting engagement with the rotating part (213) is slidably arranged on the support part (25).

6. A valve lifter assembly as set forth in claim 4, characterized in that, The suction mechanism further comprises an air passage (215), and the air passage (215) under the trigger position is unobstructed.

7. The valve lifter assembly of claim 1, wherein: The air cavity (214) is provided on the disengagement rod (2), and the installation rod (1) is provided with a piston (11) in piston engagement with the air cavity (214). The air cavity (214) is in communication with the cavity (232).

8. The valve lifter assembly of claim 1, wherein: The spiral conduit (27) in sliding engagement with the rotating part (213) is further provided on the disengagement rod (2), and the spiral direction of the spiral conduit (27) is opposite to the direction of the duckbill part (235).

9. The valve lifter assembly of claim 1, wherein: The abutting plate (234) is provided on the duckbill part (235), and the abutting plate (234) is opened under the pressing of the duckbill part (235).

10. A valve lifter assembly as set forth in claim 9, characterized in that, The side opening (233) in communication with the cavity (232) is formed on the side of the duckbill part (235).

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