Valve tappet assembling device

Abstract

The invention discloses a valve tappet assembling device, which relates to the technical field of valve tappet assembling, and comprises a mounting rod, a magnetic attraction part, a first magnetic attraction part and a second magnetic attraction part, the disengagement rod is slidably connected to the mounting rod in a sleeving mode, a plurality of turning plates are rotationally arranged on the disengagement rod in a circumferential array mode, each turning plate comprises a duckbilled part and a cavity communicated with the duckbilled part, and the duckbilled parts are squeezed by movement of the turning plates so that the cavities can be blocked; the suction mechanism is communicated with the cavity and comprises a waste residue cavity formed in the separation rod. According to the valve tappet assembling device, the cavity is sucked through the suction mechanism, hydraulic oil scraped by the duckbilled part is sucked into the waste residue cavity, so that the outer wall of the valve tappet is cleaned, the hydraulic oil is prevented from staying between the outer wall of the valve tappet and the to-be-assembled mounting cavity, and under clamping of the duckbilled part, the valve tappet accurately enters the mounting cavity; therefore, the whole operation process is relatively simple.

Description

Technical Field

[0001] The invention relates to the technical field of valve tappet assembly, and in particular to a valve tappet assembly device. Background Art

[0002] The assembly of the valve tappet is an important step in the assembly of the engine, which involves the normal operation of the valve system. Before assembly, make sure that all parts are clean and dust-free, especially the valve tappet and valve seat.

[0003] In conjunction with publication number CN207273146U, publication date 2018-04-27, a disassembly and assembly tool for a valve tappet is disclosed, comprising an insertion end extending into an inner hole of the valve tappet, a control handle and a connecting rod, wherein the insertion end is provided with two contact pieces that protrude and retract through the control handle.

[0004] However, in the prior art including the above-mentioned patent, when a hydraulic valve tappet is used, since the interior of the valve tappet is filled with hydraulic oil, it may penetrate into the outer wall of the valve tappet. The high temperature generated when the engine is running may cause the hydraulic oil on the surface to coke. Summary of the invention

[0005] The object of the present invention is to provide a valve tappet assembly device for solving the above-mentioned problems.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a valve tappet assembly device, comprising a mounting rod, on which a magnetic attraction portion for attracting the valve tappet is provided;

[0007] A disengagement rod is slidably sleeved on the mounting rod, on which a plurality of flaps are arranged in a circumferential array and rotate, wherein the flaps include a duckbill portion and a cavity communicated with the duckbill portion, and the duckbill portion is squeezed by the movement of the flaps to seal the cavity;

[0008] The suction mechanism communicated with the cavity includes a waste residue chamber disposed on the disengagement rod.

[0009] Preferably, the device further comprises a rotating member disposed at the end of the magnetic attraction portion, which is driven to deflect to press against the valve tappet.

[0010] Preferably, the valve assembly further comprises a support member which is arranged on the magnetic attraction portion and is provided with a spring, and is located between the magnetic attraction portion and the valve tappet.

[0011] Preferably, there is a triggering station in the movable stroke of the support member for deflecting the rotating member.

[0012] Preferably, an extension rod is slidably provided on the support member and cooperates with the rotating member in a blocking manner.

[0013] Preferably, the suction mechanism further includes an airway, and the airway under the triggering station is unobstructed.

[0014] Preferably, the disengagement rod is provided with an air cavity, and the mounting rod is provided with a piston that cooperates with the air cavity in a piston-like manner;

[0015] The air cavity is communicated with the cavity.

[0016] Preferably, it also includes a spiral guide tube which is arranged on the disengagement rod and slidingly cooperates with the rotating member, and the spiral direction of the spiral guide tube is opposite to the direction of the duckbill portion.

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

[0018] Preferably, a side opening communicating with the cavity is formed on the side of the duckbill.

[0019] In the above technical scheme, a valve tappet assembly device provided by the present invention has the following beneficial effects: the cavity is sucked by a suction mechanism, and the hydraulic oil scraped off by the duckbill is sucked into the waste residue cavity, so that the outer wall of the valve tappet is cleaned, and the hydraulic oil is prevented from staying between the outer wall of the valve tappet and the installation cavity to be assembled, and under the clamping of the duckbill, the valve tappet can accurately enter the installation cavity to complete the assembly, and the overall operation process is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

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

[0022] Figure 2 An exploded schematic diagram of the internal structure of a pressing head provided by an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the pressing head, flap and convex rod structure provided by an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of the internal rotating parts of the pressing head provided by an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of the structure of a rotating member provided in an embodiment of the present invention;

[0026] Figure 6A schematic diagram of the structure of a support member and a magnetic attraction portion provided in an embodiment of the present invention;

[0027] Figure 7 A schematic diagram of the internal structure of the flap cavity provided by the embodiment of the present invention when it is unobstructed;

[0028] Figure 8 A schematic diagram of the internal structure of the flap cavity plugging provided by an embodiment of the present invention;

[0029] Fig. 9 A schematic diagram of an initial state of a rotating member provided in an embodiment of the present invention;

[0030] Fig.10 A schematic diagram of the deflection state of a rotating member provided in an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1. Mounting rod; 11. Piston; 2. Disengagement rod; 21. Pressing head; 211. Rotation chamber; 212. Protruding rod; 213. Rotation member; 214. Air chamber; 215. Airway; 216. Block; 217. Introducing groove; 218. Sliding groove; 219. Protruding part; 22. Waste residue chamber; 23. Flap; 231. Guide groove; 232. Cavity; 233. Side opening; 234. Abutment plate; 235. Duckbill; 24. Transmission rod; 25. Support member; 251. Spring; 252. Inclined plate; 26. Magnetic part; 261. Extension rod; 262. Fixed seat; 263. Torsion spring; 27. Spiral catheter; 3. Disengagement support. DETAILED DESCRIPTION

[0033] In order 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 comprises a mounting rod 1, on which a magnetic attraction portion 26 for attracting the valve tappet is provided;

[0035] The disengagement rod 2 is slidably sleeved on the mounting rod 1, and a plurality of flaps 23 are rotatably arranged in a circumferential array on the disengagement rod 2, and the flap 23 includes a duckbill portion 235 and a cavity 232 communicated with the duckbill portion 235, and the duckbill portion 235 is squeezed by the movement of the flap 23 to block the cavity 232;

[0036] The suction mechanism communicated with the cavity 232 includes a waste residue chamber 22 arranged on the disengagement rod 2 .

[0037] Specifically, a pressing head 21 is provided at the end of the disengagement rod 2 close to the valve tappet, a flap 23 is rotatably provided on the pressing head 21, and a disengagement support 3 for hand-holding is provided on the disengagement rod 2. A small motor may be provided on the flap 23, or a gear may be provided on the rotating shaft of the flap 23, a gear ring meshing with the gear may be rotatably provided on the pressing head 21, and the duckbill 235 may be directed toward the outer wall of the valve tappet by manual rotation, or other driving methods known to those skilled in the art may be used.

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

[0039] At this time, the duckbill 235 rotates relative to the outer wall of the valve tappet, so that the hydraulic oil on the valve tappet is scratched by the duckbill 235, and the cavity 232 is sucked through the suction mechanism, and the hydraulic oil scratched by the duckbill 235 is sucked into the waste residue cavity 22, so that the outer wall of the valve tappet is clean, and the hydraulic oil is prevented from staying between the outer wall of the valve tappet and the mounting cavity to be assembled. Then the clean valve tappet is inserted along the mounting cavity, and the duckbill 235 is driven to rotate again. The duckbill 235 deflects and further supports the valve tappet, and then presses the detachment support 3, and pulls the installation rod 1 in the direction away from the valve tappet. The installation rod 1 drives the magnetic suction part 26 away from the valve tappet, so that the valve tappet is detached from the magnetic suction part 26 and accurately enters the mounting cavity under the clamping of the duckbill 235. The overall operation process is relatively simple.

[0040] In the above technology, the cavity 232 is sucked by the suction mechanism, and the hydraulic oil scraped off by the duckbill 235 is sucked into the waste residue cavity 22, so that the outer wall of the valve tappet is cleaned, and the hydraulic oil is prevented from staying between the outer wall of the valve tappet and the installation cavity to be assembled. Moreover, under the clamping of the duckbill 235, the valve tappet accurately enters the installation cavity to complete the assembly. The overall operation process is relatively simple.

[0041] As a further embodiment provided by the present invention, it also includes a rotating member 213 disposed at the end of the magnetic attraction portion 26, which is driven to deflect to press the valve tappet.

[0042] Specifically, a rotating chamber 211 for rotating a rotating member 213 is provided on the pressing head 21. The rotating member 213 includes a resisting portion provided with an anti-skid layer. When the valve tappet is attracted by the magnetic attraction portion 26, the plurality of rotating members 213 are driven to deflect toward the outer wall of the valve tappet, and the valve tappet is initially clamped. The valve tappet can also be prevented from being deflected by multi-directional and synchronous deflection. A pressure sensing switch can be provided on the magnetic attraction portion 26, and a motor can be provided to drive the rotating member 213. When the sensing switch senses that the valve tappet is adsorbed, the motor is automatically started, or the rotating member 213 is made tangent to the valve tappet, and the rotating member 213 is driven to deflect when the valve tappet is attracted by the magnetic attraction portion 26 and slides. Alternatively, any linkage method known to those skilled in the art can be used.

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

[0044] Specifically, the support member 25 maintains a predetermined distance with the magnetic attraction portion 26 through the spring 251. When the valve tappet is attracted by the magnetic attraction portion 26, it will preferentially push against the support member 25, 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 attraction portion 26, thereby reducing the wear of the valve tappet on the magnetic attraction portion 26.

[0045] As another embodiment further provided by the present invention, there is a triggering station in the movable stroke of the support member 25 for deflecting the rotating member 213 .

[0046] Specifically, the support member 25 is provided with an extension rod 261 that cooperates with the rotating member 213 for disengagement, and the rotating member 213 is provided with a torsion spring 263, and the rotating member 213 includes a protrusion 219, which is blocked by the extension rod 261 and remains in place, and this position is the initial position. A plurality of inclined plates 252 are provided in a circumferential array on the support member 25, and the extension rod 261 is radially slidably provided on the magnetic attraction portion 26. When the magnetic attraction portion 26 absorbs the valve tappet, the valve tappet will push the support member 25, which is the triggering position of the support member 25, and the spring 251 contracts, and the inclined plate 252 moves synchronously and pushes the extension rod 261, so that the extension rod 261 no longer blocks the rotating member 213, and 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 member 213 also includes a slide groove 218 and an introduction groove 217. The pressing head 21 is provided with a convex rod 212. When the rotating member 213 is in a pressing state, the introduction groove 217 faces the convex block provided on the convex rod 212. When it is necessary to release the pressing state between the rotating member 213 and the valve tappet, the rotating member 213 is moved toward the valve tappet, so that the convex block enters the slide groove 218 along the introduction groove 217, and the rotating member 213 is deflected again through the cooperation between the convex block and the slide groove 218, and the deflection direction is away from the valve tappet. When the convex block moves to be separated from the slide groove 218, the valve tappet is deflected again under the action of the torsion spring 263, and then stopped by the extension rod 261. At this time, the slide groove 218 is staggered with the convex block.

[0048] As another embodiment further provided by the present invention, the suction mechanism also includes an airway 215, and the airway 215 under the triggering station is unobstructed.

[0049] Specifically, the airway 215 is opened on the pressing head 21, and a block 216 is slidably provided on the airway 215. The rotating member 213 in the initial position is blocked by the extension rod 261, and the rotating member 213 supports the block 216, so that the block 216 blocks the airway 215. When the support member 25 is located at the triggering position, the rotating member 213 deflects, so that the block 216 loses its supporting force and is offset from the airway 215 under the action of its own weight or the airflow in the airway 215. The airway 215 is unblocked 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 further provided by the present invention, an air cavity 214 is provided on the disengagement rod 2, and a piston 11 which cooperates with the air cavity 214 in a piston-like manner is provided on the mounting rod 1;

[0051] The air cavity 214 is communicated with the cavity 232 .

[0052] Specifically, when the mounting rod 1 is pulled away from the valve tappet, the piston 11 is driven to move in the air cavity 214. At this time, the air cavity 214 is in a negative pressure state, and the cavity 232 is sucked, so that the hydraulic oil scraped by the duckbill 235 is sucked into the air cavity 214. A one-way valve is provided in the air cavity 214 to prevent the hydraulic oil from flowing back. The end of the air cavity 214 is connected to the waste chamber 22 through the one-way valve. When the mounting rod 1 is moved in the direction close to the valve tappet, the piston 11 pushes the collected hydraulic oil into the waste chamber 22, and the waste chamber 22 is uniformly cleaned.

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

[0054] Specifically, the magnetic attraction portion 26 is rotatably arranged on the mounting rod 1, and a fixed seat 262 is arranged in an array on the magnetic attraction portion 26 for the rotation of the rotating member 213. During the process of withdrawing the mounting rod 1, the mounting rod 1 drives the magnetic attraction portion 26 and the fixed seat 262 to enter the spiral conduit 27. At this time, the rotating member 213 presses against the side wall of the valve tappet and does not interfere with the spiral conduit 27. Then, the mounting rod 1 is continuously withdrawn, so that the fixed seat 262 abuts against the side wall of the spiral conduit 27 and deflects under the guidance of the spiral conduit 27. Since the spiral direction of the spiral conduit 27 is opposite to that of the duckbill portion 235, the rotation direction of the valve tappet is toward the duckbill portion 235, so as to better scrape the hydraulic oil on the surface.

[0055] As another embodiment further provided by 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, a guide groove 231 is provided on the flap 23, and a transmission rod 24 that slides with the guide groove 231 is fixedly provided on the mounting rod 1. When the mounting rod 1 is pulled out, the transmission rod 24 is driven to move, thereby driving the flap 23 to deflect by squeezing the guide groove 231. The greater the pulling length of the mounting rod 1, the greater the deflection angle of the flap 23. The duckbill portion 235 of the flap 23 has been against the outer wall of the valve tappet, so that the rotational force is converted into a pressure against the valve tappet. The force on the outer wall, at this time, the end of the duckbill portion 235 is squeezed, causing the cavity 232 to be narrowed and blocked, and the butt plate 234 is set on the rotating shaft of the flap 23, and opens as the flap 23 continues to deflect, and the butt plate 234 finally presses on the valve tappet, so that the force of the flap 23 on the valve tappet continues to increase, and finally overcomes the attraction of the magnetic suction portion 26 to the valve tappet, and the valve tappet is separated from the magnetic suction portion 26, so that the valve tappet is clamped at the end of the pressing head 21.

[0057] Then, the mounting rod 1 is inserted. Since the valve tappet is separated from the magnetic attraction portion 26, the rotating member 213 loses its obstruction and will spontaneously deflect toward the support member 25 under the elastic force of the torsion spring 263. The end of the rotating member 213 points to the valve tappet. The rotating member 213 is then moved toward the valve tappet. The valve tappet is pressed into the mounting cavity by pushing the end of the rotating member 213 and driving the flap 23 to deflect in the reverse direction in combination with the transmission rod 24.

[0058] Moreover, at this time, the convex block of the convex rod 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 between the convex block and the slide groove 218.

[0059] As another embodiment further provided by the present invention, a side opening 233 communicating with the cavity 232 is formed on the side of the duckbill portion 235 .

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

[0061] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that 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 above 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 tappet assembly device, characterized in that: It comprises a mounting rod (1) on which a magnetic attraction portion (26) for attracting a valve tappet is arranged; A disengagement rod (2) is slidably sleeved on the mounting rod (1), and a plurality of flaps (23) are rotatably arranged in a circumferential array on the disengagement rod (2), wherein the flap (23) comprises a duckbill portion (235) and a cavity (232) connected to the duckbill portion (235), and the duckbill portion (235) is squeezed by the movement of the flap (23) so that the cavity (232) is blocked; A suction mechanism communicated with the cavity (232) comprises a waste residue cavity (22) arranged on the disengagement rod (2).

2. A valve tappet assembly device according to claim 1, characterized in that: It also includes a rotating member (213) arranged at the end of the magnetic attraction portion (26), which is driven to deflect and press against the valve tappet.

3. A valve tappet assembly device according to claim 2, characterized in that: It also includes a support member (25) which is arranged on the magnetic attraction portion (26) and is provided with a spring (251), and is located between the magnetic attraction portion (26) and the valve tappet.

4. A valve tappet assembly device according to claim 3, characterized in that: There is a triggering station in the movable stroke of the support member (25) for deflecting the rotating member (213).

5. A valve tappet assembly device according to claim 4, characterized in that: An extension rod (261) is slidably disposed on the support member (25) and is engaged with the rotating member (213) in a blocking manner.

6. A valve tappet assembly device according to claim 4, characterized in that: The suction mechanism also includes an airway (215), and the airway (215) under the triggering station is unobstructed.

7. The valve tappet assembly device according to claim 1, characterized in that: The disengagement rod (2) is provided with an air cavity (214), and the mounting rod (1) is provided with a piston (11) which cooperates with the air cavity (214) in a piston-like manner; The air cavity (214) is in communication with the cavity (232).

8. The valve tappet assembly device according to claim 1, characterized in that: It also includes a spiral guide tube (27) which is arranged on the disengagement rod (2) and slidably cooperates with the rotating member (213), and the spiral direction of the spiral guide tube is opposite to the direction of the duckbill portion (235).

9. The valve tappet assembly device according to claim 1, characterized in that: The duckbill portion (235) is provided with a resisting plate (234), and the resisting plate (234) opens when the duckbill portion (235) is squeezed.

10. A valve tappet assembly device according to claim 9, characterized in that: A side opening (233) communicating with the cavity (232) is formed on the side of the duckbill portion (235).

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