Iron-based powder metallurgy valve seat machining device

Abstract

The utility model relates to an iron-based powder metallurgy valve seat machining device which comprises a machining table, a valve seat positioning mechanism and a driving mechanism, the valve seat positioning mechanism is rotatably connected to the machining table along a vertical rotating shaft, the driving mechanism drives the valve seat positioning mechanism to rotate, and the valve seat positioning mechanism comprises a base and a top plate detachably and fixedly connected to the upper end of the base. A groove is formed in the upper end face of the base, an electromagnetic coil is installed at the bottom of the groove, a support is fixedly connected to the machining table, a punching assembly located above the valve seat positioning mechanism is vertically connected to the support in a sliding mode, a lifting air cylinder for driving the punching assembly to ascend and descend is further installed on the support, and magnetic attraction force is generated through the electromagnetic coil. The iron valve seat is firmly fixed to the top plate, so that the fixing effect of the valve seat is achieved, the use effect is good, operation is easy and convenient, meanwhile, the driving mechanism is arranged on one side of the valve seat positioning mechanism and can drive the valve seat positioning mechanism to rotate, then punching operation of multiple positions of the valve seat is achieved, and an air injection gun of the chipping cleaning mechanism can achieve chipping cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy equipment, in particular to an iron-based powder metallurgy valve seat processing device. Background Art

[0002] The iron-based powder metallurgy valve seat is prepared by the powder metallurgy process. Powder metallurgy is a process technology for preparing metal powder or using metal powder or a mixture of metal powder and non-metallic powder as raw material, and then forming and sintering it to manufacture metal materials, composite materials and various types of products. After the valve seat powder metallurgy is completed, it needs to be punched for positioning. For example, patent announcement number CN209303764U discloses an iron-based powder metallurgy valve seat processing device, including a valve seat body, the valve seat body is arranged horizontally, and a lower horizontal base is arranged under the valve seat body... The device can meet the positioning function during valve seat processing, but there are still some shortcomings in actual use.

[0003] First, the positioning method of the valve seat of this device is not simple enough. It needs to cooperate with multiple positioning mechanisms to achieve the positioning of the valve seat. The operation is relatively cumbersome and it cannot perform drilling processing in multiple positions. Secondly, debris will be generated during the processing of the valve seat. The device lacks a debris cleaning mechanism and the use effect is not good enough, so it needs to be improved. Utility Model Content

[0004] In response to the deficiencies in the prior art, the utility model provides an iron-based powder metallurgy valve seat processing device, which can quickly achieve the positioning and fixation of the iron valve seat by setting a positioning mechanism in the form of an electromagnetic suction cup, and is provided with a rotary drive mechanism, which can achieve multi-position processing of the valve seat, and at the same time, a debris cleaning component is provided on one side of the valve seat positioning mechanism, which can achieve timely cleaning of debris, thus solving the problem that the current device has an insufficient valve seat positioning effect and cannot achieve timely disposal of debris.

[0005] The utility model is realized through the following technical scheme, which provides an iron-based powder metallurgy valve seat processing device, including a processing table, a valve seat positioning mechanism connected to the processing table along a vertical rotating axis, and a driving mechanism for driving the valve seat positioning mechanism to rotate, the valve seat positioning mechanism including a base and a top plate detachably fixed to the upper end of the base, the upper end surface of the base is provided with a groove, the bottom of the groove is provided with an electromagnetic coil, a bracket is fixedly connected to the processing table, a punching assembly located above the valve seat positioning mechanism is vertically slidably connected to the bracket, and a lifting cylinder for driving the punching assembly to rise and fall is also provided on the bracket.

[0006] During use, the valve seat is placed on the upper surface of the top plate of the valve seat positioning mechanism, and the power supply circuit of the electromagnetic coil is connected. The electromagnetic coil generates magnetic attraction, which realizes the positioning of the valve seat on the top plate. Since the diameter of the hole processed on the valve seat is small and the magnetic attraction is large, the friction of the drill bit rotation during drilling will not cause the valve seat to rotate. The lifting cylinder is then driven to work, and the lifting cylinder drives the punching assembly downward to realize the drilling of the valve seat on the valve seat positioning mechanism. The lifting cylinder then drives the punching assembly upward, and the driving mechanism realizes the rotation of the valve seat positioning mechanism. After adjusting the angle of the valve seat, the lifting cylinder drives the punching assembly downward again to realize the drilling operation at another position of the valve seat.

[0007] As an optimization, a protective pad is fixed to the lower end surface of the top plate, which is in contact with the electromagnetic coil. The protective pad in this solution is used to press the electromagnetic coil, prevent deformation, and protect the electromagnetic coil.

[0008] As an optimization, the drive mechanism includes a toothed disc fixed to the lower end of the valve seat positioning mechanism, a rack slidably connected to the processing table, and an electric push rod that drives the rack to slide horizontally. The toothed disc meshes with the rack. The electric push rod in this solution drives the rack to move, thereby driving the toothed disc to rotate.

[0009] As an optimization, the bracket is equipped with a debris cleaning mechanism, which includes a base fixed to the bracket, a mounting plate connected to the base and swinging up and down, and an air gun fixed to the mounting plate. The air gun in this solution is connected to the air pipe and sprays gas outward to clean the debris.

[0010] As an optimization, an L-shaped limit plate is fixed to the bracket, and a limit hole is opened on the L-shaped limit plate to match the telescopic shaft of the lifting cylinder. The limit hole in this solution plays a guiding role for the telescopic shaft of the lifting cylinder.

[0011] As an optimization, the punching assembly includes a punching motor and a drill bit mounted on a rotating shaft of the punching motor. The punching motor drives the drill bit to rotate to achieve drilling.

[0012] The beneficial effects of the utility model are:

[0013] By setting up a valve seat positioning mechanism, an electromagnetic coil is installed on the inner side thereof, and two protective layers are set above the electromagnetic coil to protect the electromagnetic coil. When in use, the electromagnetic coil generates magnetic attraction to firmly fix the iron valve seat on the top plate, thereby achieving the fixing effect of the valve seat. It has good use effect and is easy to operate. At the same time, a driving mechanism is set on one side of the valve seat positioning mechanism, which can drive the valve seat positioning mechanism to rotate, thereby realizing the punching operation of multiple positions of the valve seat.

[0014] By installing a debris cleaning mechanism on the bracket, the air jet gun can clean the debris at various positions of the annular base. When the valve seat positioning mechanism rotates, the air jet cleaning is performed, the cleaning effect is perfect, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a structural diagram of the valve seat positioning mechanism in the utility model;

[0017] Figure 3 This is a schematic structural diagram of the debris cleaning mechanism in the present invention;

[0018] Figure 4 This is a schematic structural diagram of the L-shaped limiting plate in the present invention;

[0019] As shown in the figure:

[0020] 1. Processing table; 2. Valve seat positioning mechanism; 201. Base; 202. Groove; 203. Protective pad; 204. Top plate; 205. Solenoid coil; 3. Debris cleaning mechanism; 301. Base; 302. Rotating shaft; 303. Mounting plate; 304. Air gun; 4. Bracket; 5. Top mounting plate; 6. Lifting cylinder; 7. L-shaped limit plate; 8. Punching assembly; 9. Rack; 10. Electric push rod; 11. Toothed disc; 12. Limit hole. DETAILED DESCRIPTION

[0021] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0022] like Figures 1 to 4 As shown, the utility model is an iron-based powder metallurgy valve seat processing device, which includes a processing table 1, a valve seat positioning mechanism 2 rotatably connected to the processing table 1 along a vertical rotation axis, and a driving mechanism for driving the valve seat positioning mechanism 2 to rotate.

[0023] The valve seat positioning mechanism 2 includes a base 201 and a top plate 204 detachably fixed to the upper end of the base 201. The base is disc-shaped, and a base shaft is fixed to the center of the lower end. The base shaft is rotatably connected to the processing table 1 through a bearing, thereby realizing the rotational connection of the base 201.

[0024] The top plate 204 is a circular plate that covers the groove and is fixed to the base 201 by a circle of bolts. The top plate 204 has anti-slip grooves on its top surface to increase friction with the valve seat.

[0025] An electromagnetic coil 205 is installed at the bottom of the groove, and the wire of the electromagnetic coil 205 passes through the lower end of the base 201. The electromagnetic coil 205 generates magnetic force to adsorb the iron-based powder metallurgy valve seat above.

[0026] A protective pad 203 is fixed to the lower end surface of the top plate 204, which fits the electromagnetic coil 205. The outer diameter of the protective pad 203 is equal to the inner diameter of the groove. The protective pad 203 is made of rubber and provides a compressive and protective effect on the electromagnetic coil 205. The thickness of the protective pad 203 should not be too large to prevent the electromagnetic coil 205 from being too far away from the iron-based powder metallurgy valve seat, which would result in insufficient suction.

[0027] The drive mechanism includes a gear plate 11 fixed to the lower end of the valve seat positioning mechanism 2, a rack 9 slidably connected to the processing table 1, and an electric push rod 10 that drives the rack to slide horizontally. The gear plate 11 is engaged with the rack 9. The gear plate 11 is a ring gear fixed to the outer ring of the base shaft. The extension and retraction of the electric push rod 10 drives the rack 9 to slide horizontally, thereby realizing the rotation adjustment of the valve seat positioning mechanism 2.

[0028] A bracket 4 is fixedly connected to the processing table 1. The bracket 4 is located on one side of the valve seat positioning mechanism 2 and includes a column and a beam fixedly connected to one side of the end of the column. A horizontal top mounting plate 5 is fixedly connected to the beam.

[0029] A punching assembly 8 is vertically slidably connected to the bracket 4 and is located above the valve seat positioning mechanism 2. The punching assembly 8 includes a punching motor and a drill bit mounted on the punching motor's rotating shaft. The punching motor drives the drill bit to rotate to achieve the drilling process on the valve seat. This method is well known in the art and will not be repeated here.

[0030] In order to guide the lifting and lowering of the punching assembly 8, several upward extending guide rods can be fixed to the upper end of the punching motor. The guide rods pass through the guide holes on the top mounting plate 5 to guide the lifting and lowering. Of course, several downward extending guide rods can also be fixed to the top mounting plate 5, and guide holes can be opened on the punching motor.

[0031] The bracket 4 is also provided with a lifting cylinder 6 for driving the lifting of the punching assembly 8. The lifting cylinder 6 is mounted on the upper end face of the top mounting plate 5, and its telescopic shaft passes through the top mounting plate 5 and is connected to the middle part of the upper end face of the punching motor.

[0032] An L-shaped stop plate 7 is fixedly attached to the bracket 4. This L-shaped stop plate 7 defines a stop hole 12 adapted for the telescopic shaft of the lift cylinder 6. By providing the L-shaped stop plate 7 and defining the stop hole 12 therein, the telescopic shaft of the lift cylinder 6 is inserted into the stop hole 12, thereby achieving telescopic limit of the telescopic shaft of the lift cylinder 6, increasing the stability of the punching assembly 8 and reducing shaking.

[0033] The support 4 is provided with a debris cleaning mechanism 3 , which includes a base 301 fixed to the support 4 , a mounting plate 303 connected to the base 301 and swinging up and down, and a spray gun 304 fixed to the mounting plate 303 .

[0034] The mounting plate 303 is hinged to the base 301 via the rotating shaft 302 . The rotating shaft 302 passes through the mounting plate 303 and the base 301 and is in interference fit with the through hole, thereby maintaining a certain rotational resistance, fixing the position of the mounting plate 303 , and preventing the outlet angle of the air gun 304 from changing arbitrarily.

[0035] The debris cleaning mechanism 3 can clean the debris inside the valve seat positioning mechanism 2, can adjust the angle of the air jet gun 304, and use the air jet gun 304 to clean the debris inside the valve seat positioning mechanism 2 in a rotating state, with a perfect cleaning effect.

[0036] The use method of this utility model:

[0037] When in use, the valve seat is placed on the upper surface of the top plate 204 of the valve seat positioning mechanism 2, and the power supply circuit of the electromagnetic coil 205 is turned on. The electromagnetic coil 205 generates a magnetic attraction to realize the positioning of the valve seat on the top plate 204. Since the diameter of the hole processed on the valve seat is small and the magnetic attraction is large, the friction force of the drill bit rotating during drilling will not drive the valve seat to rotate.

[0038] Afterwards, the lifting cylinder 6 is driven to work, and the lifting cylinder 6 drives the punching assembly 8 to move downward to realize the punching processing of the valve seat on the valve seat positioning mechanism 2. Then, the lifting cylinder 6 drives the punching assembly 8 to move upward, and the electric push rod 10 drives the rack 9 to move horizontally, and the rack 9 drives the gear disk 11 to rotate, thereby realizing the rotation of the valve seat positioning mechanism 2. After adjusting the angle of the valve seat, the lifting cylinder 6 drives the punching assembly 8 to move downward again to realize the punching operation at another position of the valve seat. When it is necessary to clean the debris inside the valve seat positioning mechanism 2, adjust the angle of the air gun 304, drive the air gun 304 to work, and clean the debris inside the valve seat positioning mechanism 2.

[0039] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. An iron-based powder metallurgy valve seat processing device, characterized by: The invention comprises a processing table (1), a valve seat positioning mechanism (2) connected to the processing table (1) and rotatable along a vertical rotating axis, and a driving mechanism for driving the valve seat positioning mechanism (2) to rotate, wherein the valve seat positioning mechanism (2) comprises a base (201) and a top plate (204) detachably fixed to the upper end of the base (201), the upper end surface of the base (201) is provided with a groove, and the bottom of the groove is provided with an electromagnetic coil (205), the processing table (1) is fixed with a bracket (4), a punching assembly (8) located above the valve seat positioning mechanism (2) is vertically slidably connected to the bracket (4), and a lifting cylinder (6) for driving the punching assembly (8) to move up and down is also provided on the bracket (4).

2. The iron-based powder metallurgy valve seat processing device according to claim 1, characterized in that: A protective pad (203) that fits the electromagnetic coil (205) is fixedly connected to the lower end surface of the top plate (204).

3. The iron-based powder metallurgy valve seat processing device according to claim 1, characterized in that: The driving mechanism comprises a toothed disc (11) fixed to the lower end of the valve seat positioning mechanism (2), a rack (9) slidably connected to the processing table (1), and an electric push rod (10) driving the rack to slide horizontally, wherein the toothed disc (11) is meshed with the rack (9).

4. The iron-based powder metallurgy valve seat processing device according to claim 1, characterized in that: The bracket (4) is provided with a debris cleaning mechanism (3), which comprises a base (301) fixed to the bracket (4), a mounting plate (303) connected to the base (301) and swinging up and down, and a spray gun (304) fixed to the mounting plate (303).

5. The iron-based powder metallurgy valve seat processing device according to claim 1, characterized in that: An L-shaped limiting plate (7) is fixedly connected to the bracket (4), and a limiting hole (12) adapted to the telescopic shaft of the lifting cylinder (6) is opened on the L-shaped limiting plate (7).

6. The iron-based powder metallurgy valve seat processing device according to claim 1, characterized in that: The punching assembly (8) comprises a punching motor and a drill bit mounted on the rotating shaft of the punching motor.

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