Multi-station valve element deburring device and process thereof

Abstract

The invention belongs to the technical field of valve element polishing, and particularly relates to a multi-station valve element deburring device and a process thereof.The device comprises a first extrusion unit, a second extrusion unit and a third extrusion unit, the first extrusion unit comprises a first cavity and a first push head, the first cavity is used for containing semi-fluid abrasive materials, and the first push head is movably arranged in the first cavity in the vertical direction; the second extrusion unit comprises a second cavity used for containing the semi-fluid abrasive and a second push head movably arranged in the second cavity in the vertical direction. The clamp assembly is provided with a plurality of cavities used for containing the valve elements. A first non-return mechanism and a second non-return mechanism are respectively arranged at the upper end and the lower end of the cavity; the first non-return mechanism and the second non-return mechanism are arranged at the two ends of the cavity, the variable runner design of the semi-fluid abrasive is achieved, the semi-fluid abrasive always flows to the outer side from the inner side of the side hole of the valve element in the reciprocating flowing process, then the grinding efficiency of burrs on the inner side of the side hole is improved, the equipment energy consumption and the production cost are reduced, and the product quality is improved. And the production efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of spool polishing, and particularly relates to a multi-station spool deburring device and its process. Background Art

[0002] Abrasive flow polishing is a relatively mature polishing process. Generally, a mixture of silicon carbide particles and a semi-fluid substrate is used as the abrasive. The abrasive is forced through the fluid channels formed by the part and the fixture by extrusion, and the surface of the part is polished during the flow of the abrasive. To improve the polishing efficiency, sometimes two pressurized chambers are arranged at both ends of the fluid channel, and the two pressurized chambers are alternately pressurized to realize the reciprocating flow of the abrasive. The fluid channels of the existing abrasive flow polishing devices are generally fixed, that is, the path of the reciprocating movement of the abrasive is the same. However, for some special parts, this fixed flow channel design often cannot fully exert the polishing efficiency of the abrasive. For example, when deburring a spool, the side holes of the spool are generally formed by drilling from the outside to the inside with a drill bit. The burrs generated by this cutting method are generally mainly distributed on the inner edge of the side hole, and the burrs generally curl away from the center of the side hole. In this case, it is more beneficial for the abrasive to flow outwards from the inside of the side hole to make the abrasive fully contact with the burrs, thereby improving the grinding efficiency. However, due to the fixed flow channel design of the traditional abrasive flow polishing device, the abrasive will reciprocate in the side hole, almost wasting half of the grinding time and affecting the production efficiency. Summary of the Invention

[0003] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a multi-station spool deburring device and its process that can improve production efficiency.

[0004] To achieve the above object and other related objects, the present invention provides a multi-station spool deburring device for removing burrs generated after machining of a spool. The spool includes a cylindrical body, and side holes are provided on the side wall of the cylindrical body. The side holes are formed by drilling the side wall of the cylindrical body from the outside to the inside with a drill bit. The device includes:

[0005] A first extrusion unit, including a first cavity for accommodating a semi-fluid abrasive, and a first pusher movably arranged in the first cavity in the vertical direction. A first opening is provided at the upper end of the first cavity;

[0006] A second extrusion unit, including a second cavity for accommodating a semi-fluid abrasive, and a second pusher movably arranged in the second cavity in the vertical direction. A second opening is provided at the lower end of the second cavity;

[0007] A fixture assembly, in which a plurality of cavities for accommodating the spool are provided, and the cavities respectively penetrate the upper and lower end faces of the fixture assembly;

[0008] The fixture assembly is detachably installed above the first extrusion unit and closes the first opening; the second extrusion unit is arranged to open and close with the first extrusion unit in the vertical direction so that the second opening can be in tight contact with or separated from the upper end surface of the fixture assembly;

[0009] The cavity is configured such that when the valve core is placed in the cavity, the cavity is divided by the valve core into an inner flow channel and an outer flow channel, where the inner flow channel is located inside the cylindrical body and the outer flow channel is located outside the cylindrical body; first check mechanisms and second check mechanisms are respectively provided at the upper and lower ends of the cavity corresponding to the inner flow channel and the outer flow channel;

[0010] The first check mechanism is assembled such that when the semi-fluid abrasive flows through the cavity from the first cavity to the second cavity, the first check mechanism closes the upper end of the inner flow channel and opens the upper end of the outer flow channel; when the semi-fluid abrasive flows through the cavity from the second cavity to the first cavity, the first check mechanism opens the upper end of the inner flow channel and closes the upper end of the outer flow channel;

[0011] The second check mechanism is assembled such that when the semi-fluid abrasive flows through the cavity from the first cavity to the second cavity, the second check mechanism opens the lower end of the inner flow channel and closes the lower end of the outer flow channel; when the semi-fluid abrasive flows through the cavity from the second cavity to the first cavity, the second check mechanism closes the lower end of the inner flow channel and opens the lower end of the outer flow channel.

[0012] In an optional embodiment of the present invention, a first sealing plate is provided at a position near the upper end of the cavity, a first branch flow channel is provided on the side wall of the cavity, the lower end of the first branch flow channel communicates with the cavity below the first sealing plate, and the upper end of the first branch flow channel communicates with the cavity above the first sealing plate; a first through hole is provided at the center of the first sealing plate.

[0013] In an alternative embodiment of the present invention, the first check mechanism includes a first valve plate, a second valve plate, and a first ejector rod. The first valve plate is located below the first sealing plate, the second valve plate is located above the first sealing plate, and the first valve plate and the second valve plate are fixedly connected by the first ejector rod. The outer diameter of the first valve plate is greater than the diameter of the first through hole and less than the inner diameter of the cylindrical body. The side wall of the second valve plate is in contact with the side wall of the cavity, and the surface of the second valve plate is provided with a hollowed-out portion. The diameter of the first ejector rod is less than the diameter of the first through hole. The first check mechanism is movably arranged in the vertical direction, and when the first check mechanism is at the lowest position within the stroke, the first valve plate is separated from the first through hole, and the second valve plate closes the upper end of the first branch flow channel. When the first check mechanism is at the highest position within the stroke, the first valve plate closes the first through hole, and the second valve plate is separated from the upper end of the first branch flow channel.

[0014] In an alternative embodiment of the present invention, a second sealing plate is provided at a position near the lower end of the cavity. A second branch flow channel is provided on the side wall of the cavity. The lower end of the second branch flow channel communicates with the cavity below the second sealing plate, and the upper end of the second branch flow channel communicates with the cavity above the second sealing plate. A second through hole is provided at the center of the second sealing plate.

[0015] In an alternative embodiment of the present invention, the second check mechanism includes a third valve plate, a fourth valve plate, and a second ejector rod. The third valve plate is located above the second sealing plate, the fourth valve plate is located below the second sealing plate, and the third valve plate and the fourth valve plate are fixedly connected by the second ejector rod. The outer diameter of the third valve plate is greater than the diameter of the second through hole and less than the inner diameter of the cylindrical body. The side wall of the fourth valve plate is in contact with the side wall of the cavity, and the surface of the fourth valve plate is provided with a hollowed-out portion. The diameter of the second ejector rod is less than the diameter of the second through hole. The second check mechanism is movably arranged in the vertical direction, and when the second check mechanism is at the highest position within the stroke, the third valve plate is separated from the second through hole, and the fourth valve plate closes the lower end of the second branch flow channel. When the second check mechanism is at the lowest position within the stroke, the third valve plate closes the second through hole, and the fourth valve plate is separated from the lower end of the second branch flow channel.

[0016] In an alternative embodiment of the present invention, the fixture assembly includes a first half body and a second half body that are separately arranged in a stacked manner up and down. A partial area of the cavity is located in the first half body, and the remaining area is located in the second half body. A flange is provided at the edge of the cavity of one of the first half body and the second half body, and the flange and the cavity of the other of the first half body and the second half body form a plug-in fit.

[0017] In an alternative embodiment of the present invention, the first sealing plate is disposed in the cavity of the first half body, and the second sealing plate is disposed in the cavity of the second half body. The first sealing plate and the second sealing plate are configured such that when the valve core is placed in the cavity and the first sealing plate and the second sealing plate clamp the upper and lower ends of the valve core, a distance can be provided between the lower end surface of the first half body and the upper end surface of the second half body.

[0018] In an alternative embodiment of the present invention, a plurality of first insert sleeve assemblies are provided in the first half body. A partial area at the upper end of the cavity and the first check mechanism are disposed in the first insert sleeve assemblies. The first insert sleeve assemblies are in interference connection with the first insert holes provided on the first half body; the first insert sleeve assemblies include a first sleeve and a first end cap which are separately arranged. The first end cap is located at the upper end of the first sleeve and the two are fixedly connected; a first convex ring is provided at the lower end of the first end cap. The first sealing plate is disposed in the first convex ring. A first radial hole is provided on the side wall of the first convex ring, and the first radial hole is located above the first sealing plate; the outer side wall of the first convex ring is spaced from the inner wall of the first sleeve. The first radial hole and the cavity between the first convex ring and the first sleeve form the first branch flow passage.

[0019] In an alternative embodiment of the present invention, a plurality of second insert sleeve assemblies are provided in the second half body. A partial area at the lower end of the cavity and the second check mechanism are disposed in the second insert sleeve assemblies. The second insert sleeve assemblies are in interference connection with the second insert holes provided on the second half body; the second insert sleeve assemblies include a second sleeve and a second end cap which are separately arranged. The second end cap is located at the lower end of the second sleeve and the two are fixedly connected; a second convex ring is provided at the upper end of the second end cap. The second sealing plate is disposed in the second convex ring. A second radial hole is provided on the side wall of the second convex ring, and the second radial hole is located below the second sealing plate; the outer side wall of the second convex ring is spaced from the inner wall of the second sleeve. The second radial hole and the cavity between the second convex ring and the second sleeve form the second branch flow passage.

[0020] To achieve the above object and other related objects, the present invention further provides a process for polishing a valve core by using the multi-station valve core deburring device, including the following steps:

[0021] Place the valve core in the cavity of the fixture assembly;

[0022] Load semi-fluid abrasive into the first cavity and place the fixture assembly above the first extrusion unit;

[0023] Control the second extrusion unit to approach the first extrusion unit and press the second extrusion unit against the fixture assembly;

[0024] Control the first push head and the second push head to reciprocally extrude, so that the semi-fluid abrasive reciprocally flows in the cavity to polish the valve core.

[0025] The technical effect of the present invention is that: by providing a first check mechanism and a second check mechanism at both ends of the cavity, the present invention realizes the variable flow channel design of the semi-fluid abrasive, so that during the reciprocating flow of the semi-fluid abrasive, it always flows from the inner side to the outer side of the side hole of the valve core, thereby improving the grinding efficiency of the burrs on the inner side of the side hole, reducing the equipment energy consumption and production cost, and improving the production efficiency. Description of the Drawings

[0026] Figure 1 is a three-dimensional structural schematic diagram of the valve core;

[0027] Figure 2 is a cross-sectional view of the multi-station valve core deburring device provided by the embodiment of the present invention;

[0028] Figure 3 is an exploded view of the fixture assembly provided by the embodiment of the present invention;

[0029] Figure 4 is a cross-sectional view of one of the stations in the assembled state of the first insert sleeve assembly and the second insert sleeve assembly provided by the embodiment of the present invention;

[0030] Figure 5 is a cross-sectional view of another station in the assembled state of the first insert sleeve assembly and the second insert sleeve assembly provided by the embodiment of the present invention;

[0031] Figure 6 is an exploded view of the first insert sleeve assembly and the second insert sleeve assembly provided by the embodiment of the present invention;

[0032] Explanation of reference numerals: 100, valve core; 110, cylindrical body; 120, side hole; 10, first extrusion unit; 11, first cavity; 12, first push head; 20, second extrusion unit; 21, second cavity; 22, second push head; 30, clamp assembly; 301, inner flow channel; 302, outer flow channel; 303, first branch flow channel; 304, second branch flow channel; 31, first half body; 32, second half body; 33, first sleeve assembly; 331, first sleeve; 332, first end cover; 3321, first convex ring; 3322, first sealing plate; 3323, first through hole; 3324, first radial hole; 34, second sleeve assembly; 341, second sleeve; 3411, flange; 342, second end cover; 3421, second convex ring; 3422, second sealing plate; 3423, second through hole; 3424, second radial hole; 35, first valve plate; 351, first push rod; 36, second valve plate; 37, third valve plate; 371, second push rod; 38, fourth valve plate. DETAILED DESCRIPTION

[0033] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0034] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic manner, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0035] See also Figure 2 As shown, the multi-station valve core deburring device provided by the present invention is an abrasive flow polishing device. In practical applications, it needs to be used in conjunction with a semi-fluid abrasive. The semi-fluid abrasive can be, for example, a mixture of silicon carbide particles and a matrix such as mineral oil.

[0036] See also Figure 1 The multi-station valve core deburring device provided by the present invention is used to remove burrs generated after the valve core 100 is mechanically processed. The valve core 100 includes a cylindrical body 110, and a side hole 120 is provided on the side wall of the cylindrical body 110. The side hole 120 is formed by cutting the side wall of the cylindrical body 110 from the outside to the inside with a drill bit. The burrs of this type of valve core 100 are mainly distributed on the edge of the inner end of the side hole 120.

[0037] Please refer to Figures 2 - 6 As shown, the multi-station valve core deburring device provided by the embodiment of the present invention includes a first extrusion unit 10, a second extrusion unit 20, and a fixture assembly 30; the first extrusion unit 10 includes a first cavity 11 for accommodating semi-fluid abrasive, and a first push head 12 movably arranged in the first cavity 11 in the vertical direction, and a first opening is provided at the upper end of the first cavity 11; the second extrusion unit 20 includes a second cavity 21 for accommodating semi-fluid abrasive, and a second push head 22 movably arranged in the second cavity 21 in the vertical direction, and a second opening is provided at the lower end of the second cavity 21; the fixture assembly 30 is internally provided with a plurality of cavities for accommodating the valve core 100, and the cavities respectively penetrate the upper and lower end faces of the fixture assembly 30; the fixture assembly 30 is detachably installed above the first extrusion unit 10 and closes the first opening; the second extrusion unit 20 is arranged to open and close with the first extrusion unit 10 in the vertical direction so that the second opening can be in tight contact with or separated from the upper end face of the fixture assembly 30; the cavity is configured such that when the valve core 100 is placed in the cavity, the cavity is separated into an inner flow channel 301 and an outer flow channel 302 by the valve core 100, wherein the inner flow channel 301 is located inside the cylindrical body 110, and the outer flow channel 302 is located outside the cylindrical body 110; first check mechanisms and second check mechanisms are respectively provided at the upper and lower ends of the cavity corresponding to the inner flow channel 301 and the outer flow channel 302; the first check mechanism is assembled such that when the semi-fluid abrasive flows from the first cavity 11 to the second cavity 21 through the cavity, the first check mechanism closes the upper end of the inner flow channel 301 and opens the upper end of the outer flow channel 302; when the semi-fluid abrasive flows from the second cavity 21 to the first cavity 11 through the cavity, the first check mechanism opens the upper end of the inner flow channel 301 and closes the upper end of the outer flow channel 302; the second check mechanism is assembled such that when the semi-fluid abrasive flows from the first cavity 11 to the second cavity 21 through the cavity, the second check mechanism opens the lower end of the inner flow channel 301 and closes the lower end of the outer flow channel 302; when the semi-fluid abrasive flows from the second cavity 21 to the first cavity 11 through the cavity, the second check mechanism closes the lower end of the inner flow channel 301 and opens the lower end of the outer flow channel 302.

[0038] By arranging the first check mechanism and the second check mechanism at both ends of the cavity, the present invention realizes the variable flow channel design of the semi-fluid abrasive, so that during the reciprocating flow of the semi-fluid abrasive, it always flows from the inside to the outside of the side hole 120, thereby improving the grinding efficiency of the burrs inside the side hole 120, reducing the equipment energy consumption and production cost, and improving the production efficiency.

[0039] Please refer to Figure 4 、 5 As shown in Figure 4 , 5 and Fig. 6, in an alternative embodiment of the present invention, a first sealing plate 3322 is provided at a position near the upper end of the cavity. A first branch flow channel 303 is provided on the side wall of the cavity. The lower end of the first branch flow channel 303 communicates with the cavity below the first sealing plate 3322, and the upper end of the first branch flow channel 303 communicates with the cavity above the first sealing plate 3322. A first through hole 3323 is provided at the center of the first sealing plate 3322. It should be understood that when the valve core 100 is placed in the cavity, the first branch flow channel 303 communicates with the outer flow channel 302, the first through hole 3323 communicates with the inner flow channel 301. The first branch flow channel 303 forms an independent outlet at the upper end of the outer flow channel 302, and the first through hole 3323 forms an independent inlet at the upper end of the inner flow channel 301, which is convenient for the subsequent setting of the first check mechanism.

[0040] Please refer to Figure 4 、 5 As shown in Figure 4 , 5 and Fig. 6, in an alternative embodiment of the present invention, the first check mechanism includes a first valve plate 35, a second valve plate 36 and a first ejector rod 351. The first valve plate 35 is located below the first sealing plate 3322, the second valve plate 36 is located above the first sealing plate 3322, and the first valve plate 35 and the second valve plate 36 are fixedly connected by the first ejector rod 351. The outer diameter of the first valve plate 35 is larger than the diameter of the first through hole 3323 and smaller than the inner diameter of the cylindrical body 110. The side wall of the second valve plate 36 fits against the side wall of the cavity, and a hollowed-out portion is provided on the plate surface of the second valve plate 36. The diameter of the first ejector rod 351 is smaller than the diameter of the first through hole 3323. The first check mechanism is movably arranged in the vertical direction. When the first check mechanism is at the lowest position within the stroke, the first valve plate 35 is separated from the first through hole 3323, and the second valve plate 36 closes the upper end of the first branch flow channel 303. When the first check mechanism is at the highest position within the stroke, the first valve plate 35 closes the first through hole 3323, and the second valve plate 36 is separated from the upper end of the first branch flow channel 303. The working principle of the first check mechanism will be described simultaneously with the second check mechanism later, and will not be elaborated here separately.

[0041] Please refer to Figure 4 、 5As shown in FIGS. 5 and 6, in an alternative embodiment of the present invention, a second sealing plate 3422 is provided at a position near the lower end of the cavity. A second branch flow channel 304 is provided on the side wall of the cavity. The lower end of the second branch flow channel 304 communicates with the cavity below the second sealing plate 3422, and the upper end of the second branch flow channel 304 communicates with the cavity above the second sealing plate 3422. A second through hole 3423 is provided at the center of the second sealing plate 3422. It should be understood that when the valve core 100 is placed in the cavity, the second branch flow channel 304 communicates with the outer flow channel 302, the second through hole 3423 communicates with the inner flow channel 301. The second branch flow channel 304 forms an independent outlet at the lower end of the outer flow channel 302, and the second through hole 3423 forms an independent inlet at the lower end of the inner flow channel 301, which facilitates the subsequent setting of the second check mechanism.

[0042] Please refer to Figure 4 、 5 、6, in an alternative embodiment of the present invention, the second check mechanism includes a third valve plate 37, a fourth valve plate 38 and a second ejector rod 371. The third valve plate 37 is located above the second sealing plate 3422, the fourth valve plate 38 is located below the second sealing plate 3422, and the third valve plate 37 and the fourth valve plate 38 are fixedly connected by the second ejector rod 371. The outer diameter of the third valve plate 37 is larger than the diameter of the second through hole 3423 and smaller than the inner diameter of the cylindrical body 110. The side wall of the fourth valve plate 38 fits against the side wall of the cavity, and a hollow portion is provided on the plate surface of the fourth valve plate 38. The diameter of the second ejector rod 371 is smaller than the diameter of the second through hole 3423. The second check mechanism is movably provided in the vertical direction. When the second check mechanism is at the highest position within the stroke, the third valve plate 37 is separated from the second through hole 3423, and the fourth valve plate 38 closes the lower end of the second branch flow channel 304. When the second check mechanism is at the lowest position within the stroke, the third valve plate 37 closes the second through hole 3423, and the fourth valve plate 38 is separated from the lower end of the second branch flow channel 304.

[0043] The working principles of the first check mechanism and the second check mechanism are described in detail below in conjunction with Figure 4 、 5 :

[0044] When the semi-fluid abrasive flows from bottom to top, the state of the fixture assembly 30 is as shown in Figure 4As shown, the semi-fluid abrasive enters from the bottom of the cavity. At this time, the third valve plate 37 will be lifted by the semi-fluid abrasive, and the second through hole 3423 is opened. Since the relative position of the fourth valve plate 38 and the third valve plate 37 is fixed, the fourth valve plate 38 will move upward synchronously and close the lower end of the second branch flow channel 304. At this time, the semi-fluid abrasive can only flow into the inner flow channel 301 through the second through hole 3423. After the semi-fluid abrasive enters the inner flow channel 301, it will enter the outer flow channel 302 through the side hole 120 of the valve core 100. At the same time, the semi-fluid abrasive will gradually fill the inner flow channel 301 until the first valve plate 35 is lifted. The first valve plate 35 closes the first through hole 3323. Since the relative position of the second valve plate 36 and the first valve plate 35 is fixed, the second valve plate 36 will move upward synchronously and open the upper end of the first branch flow channel 303. At this time, the semi-fluid abrasive in the outer flow channel 302 can be discharged to the upper end of the cavity through the first branch flow channel 303. The continuous flow of the semi-fluid abrasive from the inner flow channel 301 to the outer flow channel 302 can realize the grinding of the burrs on the inner side edge of the side hole 120.

[0045] When the semi-fluid abrasive flows from top to bottom, the state of the fixture assembly 30 is as Figure 5 shown. The semi-fluid abrasive enters from the top of the cavity. At this time, the first valve plate 35 moves downward under the extrusion of the semi-fluid abrasive, and the first through hole 3323 is opened. The second valve plate 36 moves downward synchronously, and then closes the upper end of the first branch flow channel 303. At this time, the semi-fluid abrasive can only enter the inner flow channel 301 through the first through hole 3323. The semi-fluid abrasive gradually fills the inner flow channel 301 and enters the outer flow channel 302 through the side hole 120. At the same time, the third valve plate 37 moves downward under the extrusion of the semi-fluid abrasive and closes the second through hole 3423. The fourth valve plate 38 moves downward synchronously, and then opens the lower end of the second branch flow channel 304. At this time, the semi-fluid abrasive can be discharged to the lower end of the cavity through the second branch flow channel 304. The continuous flow of the semi-fluid abrasive from the inner flow channel 301 to the outer flow channel 302 can realize the grinding of the burrs on the inner side edge of the side hole 120.

[0046] Please refer to Figure 3 shown. In an optional embodiment of the present invention, the fixture assembly 30 includes a first half body 31 and a second half body 32 which are arranged in a split and stacked manner. A partial area of the cavity is located in the first half body 31, and the remaining area is located in the second half body 32. A flange 3411 is provided at the edge of the cavity of one of the first half body 31 and the second half body 32. The flange 3411 and the cavity of the other of the first half body 31 and the second half body 32 form a plug-in fit. The present invention arranges the fixture assembly 30 into the split first half body 31 and second half body 32, which is convenient for loading and unloading the valve core 100.

[0047] Please refer to Figure 2 、4 As shown in Fig. 5, in an alternative embodiment of the present invention, the first sealing plate 3322 is disposed in the cavity of the first half 31, and the second sealing plate 3422 is disposed in the cavity of the second half 32. The first sealing plate 3322 and the second sealing plate 3422 are configured such that when the valve core 100 is placed in the cavity and the first sealing plate 3322 and the second sealing plate 3422 clamp the upper and lower ends of the valve core 100, a distance can be provided between the lower end surface of the first half 31 and the upper end surface of the second half 32. This can ensure that the first half 31 and the second half 32 fully clamp the valve core 100, preventing the valve core 100 from wobbling in the cavity after the first half 31 and the second half 32 are closed together.

[0048] Please refer to Figures 3 - 6As shown, in an alternative embodiment of the present invention, a plurality of first insert components 33 are provided in the first half 31. A partial area at the upper end of the cavity and the first check mechanism are arranged within the first insert components 33. The first insert components 33 are in interference connection with first insert holes provided on the first half 31. The first insert components 33 include a first sleeve 331 and a first end cap 332 which are separately arranged. The first end cap 332 is located at the upper end of the first sleeve 331 and the two are fixedly connected. A first convex ring 3321 is provided at the lower end of the first end cap 332. A first sealing plate 3322 is arranged within the first convex ring 3321. A first radial hole 3324 is provided on the side wall of the first convex ring 3321, and the first radial hole 3324 is located above the first sealing plate 3322. The outer side wall of the first convex ring 3321 is spaced from the inner wall of the first sleeve 331. The first radial hole 3324 and the cavity between the first convex ring 3321 and the first sleeve 331 form the first branch flow channel 303. A plurality of second insert components 34 are provided in the second half 32. A partial area at the lower end of the cavity and the second check mechanism are arranged within the second insert components 34. The second insert components 34 are in interference connection with second insert holes provided on the second half 32. The second insert components 34 include a second sleeve 341 and a second end cap 342 which are separately arranged. The second end cap 342 is located at the lower end of the second sleeve 341 and the two are fixedly connected. A second convex ring 3421 is provided at the upper end of the second end cap 342. A second sealing plate 3422 is arranged within the second convex ring 3421. A second radial hole 3424 is provided on the side wall of the second convex ring 3421, and the second radial hole 3424 is located below the second sealing plate 3422. The outer side wall of the second convex ring 3421 is spaced from the inner wall of the second sleeve 341. The second radial hole 3424 and the cavity between the second convex ring 3421 and the second sleeve 341 form the second branch flow channel 304. It should be understood that the present invention arranges the fixture assembly 30 in the form of a base plus inserts, which facilitates the machining of the fixture, avoids machining multiple complex cavities on one half, and reduces the manufacturing cost. Additionally, the present invention arranges the inserts as multiple separate components, further facilitating the machining of internal structures such as the first radial hole 3324 and the second radial hole 3424, further simplifying the manufacturing process and reducing the manufacturing cost.

[0049] The present invention also provides a process for polishing the valve core 100 using the multi-station valve core deburring device, including the following steps:

[0050] Place the valve core 100 within the cavity of the fixture assembly 30;

[0051] Load the semi-fluid abrasive into the first cavity 11, and place the fixture assembly 30 above the first extrusion unit 10;

[0052] Control the second extrusion unit 20 to move closer to the first extrusion unit 10, and make the second extrusion unit 20 press the fixture assembly 30;

[0053] Control the first push head 12 and the second push head 22 to reciprocally extrude, so that the semi-fluid abrasive reciprocally flows in the cavity, realizing the polishing of the valve core 100.

[0054] In summary, the present invention realizes the variable flow channel design of the semi-fluid abrasive by arranging the first check mechanism and the second check mechanism at both ends of the cavity, so that during the reciprocating flow of the semi-fluid abrasive, it always flows from the inner side to the outer side of the side hole, thereby improving the grinding efficiency of the burrs on the inner side of the side hole, reducing the equipment energy consumption and production cost, and improving the production efficiency; the present invention sets the fixture assembly into a split first half body and second half body, which is convenient for loading and unloading the valve core; the present invention sets the fixture assembly in the form of a base plus an insert, which is convenient for processing the fixture, avoids machining multiple complex cavities on one half body, and reduces the manufacturing cost; in addition, the present invention sets the insert into multiple split components, which further facilitates the processing of internal structures such as the first radial hole and the second radial hole, further simplifies the manufacturing process, and reduces the manufacturing cost.

[0055] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

[0056] In the description herein, numerous specific details are provided, such as examples of components and / or methods, to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of the specific details or by other devices, systems, components, methods, parts, materials, parts, etc. In other instances, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

Claims

1. A multi-station valve core deburring device, used for removing burrs generated after machining of a valve core (100), wherein the valve core (100) comprises a cylindrical body (110), a side hole (120) is provided on the side wall of the cylindrical body (110), and the side hole (120) is formed by cutting the side wall of the cylindrical body (110) from the outside to the inside with a drill bit; characterized in that: include: A first extrusion unit (10) comprises a first cavity (11) for accommodating semi-fluid abrasive, and a first pusher head (12) movably arranged in the first cavity (11) along a vertical direction, wherein the upper end of the first cavity (11) is provided with a first opening; The second extrusion unit (20) comprises a second cavity (21) for accommodating the semi-fluid abrasive, and a second pusher head (22) movably arranged in the second cavity (21) along a vertical direction, and a second opening is provided at the lower end of the second cavity (21); A clamp assembly (30), wherein a plurality of cavities for accommodating the valve core (100) are provided in the clamp assembly (30), and the cavities respectively penetrate the upper and lower end surfaces of the clamp assembly (30); The clamp assembly (30) is detachably mounted above the first extrusion unit (10) and closes the first opening; the second extrusion unit (20) is arranged to open and close with the first extrusion unit (10) in a vertical direction, so that the second opening can be pressed against or separated from the upper end surface of the clamp assembly (30); The mold cavity is configured such that when the valve core (100) is placed in the mold cavity, the mold cavity is divided into an inner flow channel (301) and an outer flow channel (302) by the valve core (100), wherein the inner flow channel (301) is located on the inner side of the cylindrical body (110), and the outer flow channel (302) is located on the outer side of the cylindrical body (110); the mold cavity is provided with a first non-return mechanism and a second non-return mechanism at the upper and lower ends corresponding to the inner flow channel (301) and the outer flow channel (302), respectively; The first non-return mechanism is configured such that when the semi-fluid abrasive flows from the first cavity (11) to the second cavity (21) through the mold cavity, the first non-return mechanism closes the upper end of the inner flow channel (301) and opens the upper end of the outer flow channel (302); when the semi-fluid abrasive flows from the second cavity (21) to the first cavity (11) through the mold cavity, the first non-return mechanism opens the upper end of the inner flow channel (301) and closes the upper end of the outer flow channel (302); The second check mechanism is configured such that when the semi-fluid abrasive flows from the first cavity (11) to the second cavity (21) through the mold cavity, the second check mechanism opens the lower end of the inner flow channel (301) and closes the lower end of the outer flow channel (302); when the semi-fluid abrasive flows from the second cavity (21) to the first cavity (11) through the mold cavity, the second check mechanism closes the lower end of the inner flow channel (301) and opens the lower end of the outer flow channel (302).

2. The multi-position valve core deburring device according to claim 1, characterized in that: A first sealing plate (3322) is provided near the upper end of the cavity, and a first branch channel (303) is provided on the side wall of the cavity. The lower end of the first branch channel (303) is connected to the cavity below the first sealing plate (3322), and the upper end of the first branch channel (303) is connected to the cavity above the first sealing plate (3322); a first through hole (3323) is provided in the center of the first sealing plate (3322).

3. The multi-position valve core deburring device according to claim 2, characterized in that: The first check mechanism comprises a first valve plate (35), a second valve plate (36) and a first push rod (351); the first valve plate (35) is located below the first sealing plate (3322), the second valve plate (36) is located above the first sealing plate (3322), and the first valve plate (35) and the second valve plate (36) are fixedly connected via the first push rod (351); the outer diameter of the first valve plate (35) is larger than the diameter of the first through hole (3323) and smaller than the inner diameter of the cylindrical body (110); the side wall of the second valve plate (36) is in contact with the side wall of the cavity, and the second valve plate (36) is in contact with the cavity. A hollow portion is provided on the plate surface; the diameter of the first push rod (351) is smaller than the diameter of the first through hole (3323); the first check mechanism is movably arranged in the vertical direction, and when the first check mechanism is located at the lowest position within the stroke, the first valve plate (35) is separated from the first through hole (3323), and the second valve plate (36) closes the upper end of the first branch flow channel (303); when the first check mechanism is located at the highest position within the stroke, the first valve plate (35) closes the first through hole (3323), and the second valve plate (36) is separated from the upper end of the first branch flow channel (303).

4. The multi-position valve core deburring device according to claim 2, characterized in that: A second sealing plate (3422) is provided near the lower end of the cavity, and a second branch channel (304) is provided on the side wall of the cavity. The lower end of the second branch channel (304) is connected to the cavity below the second sealing plate (3422), and the upper end of the second branch channel (304) is connected to the cavity above the second sealing plate (3422); a second through hole (3423) is provided in the center of the second sealing plate (3422).

5. The multi-station valve core deburring device according to claim 4, characterized in that: The second non-return mechanism comprises a third valve plate (37), a fourth valve plate (38) and a second push rod (371); the third valve plate (37) is located above the second sealing plate (3422), the fourth valve plate (38) is located below the second sealing plate (3422), and the third valve plate (37) and the fourth valve plate (38) are fixedly connected via the second push rod (371); the outer diameter of the third valve plate (37) is larger than the diameter of the second through hole (3423) and smaller than the inner diameter of the cylindrical body (110); the side wall of the fourth valve plate (38) is in contact with the side wall of the cavity, and the fourth valve plate (38) is fixedly connected to the second sealing plate (3422). A hollow portion is provided on the plate surface; the diameter of the second push rod (371) is smaller than the diameter of the second through hole (3423); the second check mechanism is movably arranged in the vertical direction, and when the second check mechanism is located at the highest position within the stroke, the third valve plate (37) is separated from the second through hole (3423), and the fourth valve plate (38) closes the lower end of the second branch flow channel (304); when the second check mechanism is located at the lowest position within the stroke, the third valve plate (37) closes the second through hole (3423), and the fourth valve plate (38) is separated from the lower end of the second branch flow channel (304).

6. The multi-position valve core deburring device according to claim 4, characterized in that: The clamp assembly (30) comprises a first half body (31) and a second half body (32) which are stacked up and down in a split manner, a partial area of ​​the cavity is located in the first half body (31), and the remaining area is located in the second half body (32); a flange (3411) is provided on the edge of the cavity of one of the first half body (31) and the second half body (32), and the flange (3411) forms a plug-in fit with the cavity of the other of the first half body (31) and the second half body (32).

7. The multi-position valve core deburring device according to claim 6, characterized in that: The first sealing plate (3322) is arranged in the mold cavity of the first half body (31), and the second sealing plate (3422) is arranged in the mold cavity of the second half body (32). The first sealing plate (3322) and the second sealing plate (3422) are configured so that when the valve core (100) is placed in the mold cavity and the first sealing plate (3322) and the second sealing plate (3422) clamp the upper and lower ends of the valve core (100), the lower end surface of the first half body (31) and the upper end surface of the second half body (32) can be spaced a distance apart.

8. The multi-position valve core deburring device according to claim 6, characterized in that: A plurality of first insert assemblies (33) are arranged in the first half body (31), a partial area at the upper end of the cavity and the first non-return mechanism are arranged in the first insert assemblies (33), and the first insert assemblies (33) are interference-connected with the first insert holes arranged on the first half body (31); the first insert assemblies (33) include a first sleeve (331) and a first end cover (332) arranged in a split manner, the first end cover (332) is located at the upper end of the first sleeve (331), and the two are fixedly connected; the lower end of the first end cover (332) is provided with a first convex Ring (3321), the first sealing plate (3322) is arranged in the first convex ring (3321), and the side wall of the first convex ring (3321) is provided with a first radial hole (3324), and the first radial hole (3324) is located above the first sealing plate (3322); the outer wall of the first convex ring (3321) is spaced from the inner wall of the first sleeve (331), and the first radial hole (3324) and the cavity between the first convex ring (3321) and the first sleeve (331) constitute the first branch flow channel (303).

9. The multi-position valve core deburring device according to claim 6, characterized in that: A plurality of second insert assemblies (34) are arranged in the second half body (32); a partial area at the lower end of the cavity and the second non-return mechanism are arranged in the second insert assemblies (34); the second insert assemblies (34) are interference-connected with the second insert holes arranged on the second half body (32); the second insert assemblies (34) include a second sleeve (341) and a second end cover (342) arranged in a split manner; the second end cover (342) is located at the lower end of the second sleeve (341), and the two are fixedly connected; the upper end of the second end cover (342) is provided with a second convex The second sealing plate (3422) is arranged in the second convex ring (3421), and the side wall of the second convex ring (3421) is provided with a second radial hole (3424), and the second radial hole (3424) is located below the second sealing plate (3422); the outer wall of the second convex ring (3421) is spaced from the inner wall of the second sleeve (341), and the second radial hole (3424) and the cavity between the second convex ring (3421) and the second sleeve (341) constitute the second branch flow channel (304).

10. A process for polishing a valve core (100) using the multi-station valve core deburring device according to any one of claims 1 to 9, characterized in that: The steps include: Placing the valve core (100) in the cavity of the clamp assembly (30); Filling the first cavity (11) with semi-fluid abrasive, and placing the fixture assembly (30) above the first extrusion unit (10); Controlling the second extrusion unit (20) to move closer to the first extrusion unit (10), and causing the second extrusion unit (20) to press the clamp assembly (30); The first pusher head (12) and the second pusher head (22) are controlled to reciprocate and extrude, so that the semi-fluid abrasive flows reciprocally in the mold cavity, thereby achieving polishing of the valve core (100).

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