Clamping device for hydraulic valve sleeve

Abstract

The clamping device comprises a mounting seat, a clamping rod, a driving mechanism and a limiting mechanism, wherein the clamping rod is arranged on the mounting seat and is used for being inserted into the valve sleeve; the driving mechanism is connected between the mounting seat and the clamping rod and is used for driving the clamping rod to rotate; the limiting mechanism is arranged on the clamping rod and is used for limiting the valve sleeve; compared with the prior art, the utility model has the following benefits: in the prior art, the surface part of the valve sleeve is easily blocked when the valve sleeve is clamped, so that inconvenience is brought to subsequent processing such as polishing. According to the utility model, the limiting mechanism on the clamping rod is ingeniously arranged, and the limiting block is matched with the oil groove pressurizing mechanism, so that stable limiting from the interior of the valve sleeve is realized without influencing the surface of the valve sleeve, and meanwhile, the valve sleeve positioning mechanism is arranged to ensure the clamping accuracy, so that the problems in the prior art are effectively solved; and the clamping efficiency and the machining quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic valve sleeve processing technology, and in particular to a clamping device for hydraulic valve sleeves. Background Technology

[0002] In the machining of hydraulic valve sleeves, the clamping device plays a crucial role. Existing clamping technologies, such as the rapid clamping device for machining the conical surface of valve sleeves disclosed in Chinese Utility Model Patent Application No. 201922417396.0, while improving machining efficiency to some extent, still have some problems that urgently need to be solved. Specifically, these clamping devices often fix the valve sleeve by external clamping methods such as collets. This method not only easily leaves clamp marks on the surface of the valve sleeve, but also causes many inconveniences in subsequent processing such as polishing because the clamping part obstructs the surface of the valve sleeve. Therefore, how to design a clamping device that can effectively fix the valve sleeve without affecting its surface machining has become a technical problem that urgently needs to be solved in the field of hydraulic valve sleeve machining technology.

[0003] To address the aforementioned problems, this utility model proposes a novel hydraulic valve sleeve clamping device, aiming to achieve efficient, precise, and non-destructive clamping of valve sleeves by improving the clamping method, thereby meeting the actual needs of hydraulic valve sleeve processing. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a clamping device for hydraulic valve sleeves to solve the above problems.

[0005] To achieve the above objectives, this utility model provides a clamping device for a hydraulic valve sleeve, comprising a mounting base, a clamping rod disposed on the mounting base for insertion into the valve sleeve, a driving mechanism connected between the mounting base and the clamping rod for driving the clamping rod to rotate, and a limiting mechanism disposed on the clamping rod for limiting the valve sleeve.

[0006] The limiting mechanism includes a first groove embedded in the side of the clamping rod, a limiting block slidably disposed in the first groove, the limiting block being movably engaged in the oil hole of the valve sleeve, and a first spring connecting the limiting block and the first groove.

[0007] The clamping rod has an oil groove inside, the first groove is connected to the oil groove, and the clamping rod is equipped with an oil groove pressurization mechanism.

[0008] Preferably, the length direction of the oil groove is consistent with the length direction of the clamping rod, and the side of the oil groove is connected to the first groove through a connecting groove.

[0009] Preferably, the oil tank pressurization mechanism includes a pressurization cylinder fixed on the mounting base, a pressurization plate fixed to the head of the pressurization cylinder, and the pressurization plate being movably disposed inside the rear end of the oil tank.

[0010] Preferably, the front of the limiting block is circular, and the head of the limiting block is provided with a trapezoidal surface.

[0011] Preferably, the drive mechanism includes a servo motor fixed on the mounting base, a drive gear fixed to the output shaft of the servo motor, and a driven gear fixed on the clamping rod, wherein the drive gear and the driven gear are meshed together.

[0012] Preferably, the side of the clamping rod is provided with a valve sleeve positioning mechanism;

[0013] The valve sleeve positioning mechanism includes a second groove embedded in the side of the clamping rod, a positioning block movably disposed in the second groove, and a second spring connecting the positioning block and the second groove.

[0014] Preferably, the head of the positioning block has a spherical structure.

[0015] Compared with the prior art, this utility model has the following advantages: In the prior art, the surface of the valve sleeve is easily obscured during clamping, causing inconvenience to subsequent processing such as polishing. This utility model, through the ingenious setting of a limiting mechanism on the clamping rod, and the cooperation of the limiting block and the oil groove pressurizing mechanism, achieves stable positioning from inside the valve sleeve without affecting its surface. At the same time, it is also equipped with a valve sleeve positioning mechanism to ensure clamping accuracy, thereby effectively solving the problems in the prior art and improving clamping efficiency and processing quality. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention during clamping.

[0018] Figure 2 This is a schematic diagram of the structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention during clamping.

[0020] Figure 4 This is a schematic diagram of the longitudinal section structure of the present invention during clamping.

[0021] In the diagram: 1. Mounting base; 2. Valve sleeve; 3. Clamping rod; 4. Drive mechanism; 5. Limiting mechanism; 51. First groove; 52. Limiting block; 53. First spring; 31. Oil groove; 32. Oil groove pressurization mechanism; 321. Pressurization cylinder; 322. Pressurization plate; 33. Connecting groove; 41. Servo motor; 42. Drive gear; 43. Driven gear; 6. Valve sleeve positioning mechanism; 61. Second groove; 62. Positioning block; 63. Second spring; 21. Oil hole. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-4 The specific embodiments of this utility model will be described in further detail.

[0023] like Figure 1-4 As shown, the present invention discloses a clamping device for a hydraulic valve sleeve, comprising a mounting base 1, a clamping rod 3 disposed on the mounting base 1 for insertion into the valve sleeve 2, a driving mechanism 4 connected between the mounting base 1 and the clamping rod 3 for driving the clamping rod 3 to rotate, and a limiting mechanism 5 disposed on the clamping rod 3 for limiting the valve sleeve 2. When the valve sleeve 2 needs to be clamped, the valve sleeve 2 to be processed is placed on the clamping rod 3, and the valve sleeve 2 is limited by the limiting mechanism 5. When the valve sleeve 2 needs to be rotated, the clamping rod 3 is driven to rotate by the driving mechanism 4.

[0024] like Figure 3 and Figure 4 As shown, the limiting mechanism 5 includes a first groove 51 embedded in the side of the clamping rod 3, a limiting block 52 slidably disposed in the first groove 51, the limiting block 52 being movably locked in the oil hole 21 of the valve sleeve 2, and a first spring 53 connecting the limiting block 52 and the first groove 51. The clamping rod 3 has an oil groove 31 inside, the first groove 51 is connected to the oil groove 31, and the clamping rod 3 is provided with an oil groove pressurization mechanism 32.

[0025] The oil tank pressurization mechanism 32 is used to squeeze the oil in the oil tank 31, so that the oil in the oil tank 31 enters the first groove 51, and under the action of oil pressure, pushes the limiting block 52 to move outward and lock into the oil hole 21 on the side of the valve sleeve 2. In this way, the valve sleeve 2 can be quickly limited, and the limiting block 52 is locked into the oil hole 21 from the inside and does not protrude from the surface of the valve sleeve 2, so it will not affect the processing of the surface of the valve sleeve 2.

[0026] The length direction of the oil groove 31 is consistent with the length direction of the clamping rod 3. The side of the oil groove 31 is connected to the first groove 51 through the connecting groove 33. It can be understood that the surface of the valve sleeve 2 is provided with several sets of oil holes 21 along the length direction. In order to increase the limiting effect of the clamping rod 3, the number of limiting blocks 52 can be set to multiple sets. The number of connecting grooves 33 is consistent with the number of sets of limiting blocks 52. In this way, when the oil groove pressurizing mechanism 32 pressurizes, the oil in the oil groove 31 can be sent into multiple first grooves 51 corresponding to the limiting blocks 52 through multiple sets of connecting grooves 33, so that multiple limiting blocks 52 are simultaneously inserted into multiple oil holes 21 on the side of the valve sleeve 2.

[0027] In some embodiments, the oil tank pressurization mechanism 32 includes a pressurization cylinder 321 fixed on the mounting base 1. A pressurization plate 322 is fixed to the head of the pressurization cylinder 321. The pressurization plate 322 is movably disposed inside the rear end of the oil tank 31. When pressurization is required, the pressurization cylinder 321 extends to drive the pressurization plate 322 to move. When the pressurization plate 322 moves, it squeezes the oil in the oil tank 31, causing the limiting block 52 to move outward under the action of oil pressure. Conversely, when the pressurization cylinder 321 shortens, the limiting block 52 is reset under the action of the first spring 53, and the oil returns to the oil tank 31.

[0028] The front of the limiting block 52 is circular, which is consistent with the shape of the oil hole 21. The head of the limiting block 52 is provided with a trapezoidal surface. When the trapezoidal surface acts on the oil hole 21, it can play a better tightening role, thereby better limiting the valve sleeve 2.

[0029] In some embodiments, the drive mechanism 4 includes a servo motor 41 fixed on the mounting base 1, a drive gear 42 fixed to the output shaft of the servo motor 41, and a driven gear 43 fixed on the clamping rod 3. The drive gear 42 and the driven gear 43 are meshed together. When the valve sleeve 2 needs to be rotated, the external power supply of the servo motor 41 is turned on. When the output shaft of the servo motor 41 rotates, it drives the drive gear 42 to rotate. When the drive gear 42 rotates, it drives the driven gear 43 to rotate. When the driven gear 43 rotates, it drives the clamping rod 3 to rotate. When the clamping rod 3 rotates, it drives the valve sleeve 2 to rotate.

[0030] To facilitate the quick alignment of the limiting block 52 with the oil hole 21 when the clamping rod 3 is fitted onto the valve sleeve 2, a valve sleeve positioning mechanism 6 is provided on the side of the clamping rod 3.

[0031] like Figure 2 He Ru Figure 3As shown, the valve sleeve positioning mechanism 6 includes a second groove 61 embedded in the side of the clamping rod 3, a positioning block 62 movably disposed in the second groove 61, and a second spring 63 connecting the positioning block 62 and the second groove 61. During clamping, the valve sleeve 2 is put on the clamping rod 3, and then the valve sleeve 2 is manually rotated. When the positioning block 62 is aligned with the oil hole 21, under the elastic force of the second spring 63, the positioning block 62 slides into the oil hole 21. At this time, the collision between the positioning block 62 and the oil hole 21 will make a "click" sound, indicating that the positioning is complete.

[0032] In some embodiments, the head of the positioning block 62 has a spherical structure.

[0033] Understandably, without external force, the limiting block 52 is hidden in the first groove 51. Under oil pressure, the limiting block 52 will move outward. In addition, without external force, the positioning block 62 protrudes from the surface of the clamping rod 3. When the clamping rod 3 is inserted into the valve sleeve 2, the positioning block 62 will retract into the second groove 61 under the pressure of the inner wall of the valve sleeve 2.

[0034] In summary, this utility model aims to provide a hydraulic valve sleeve clamping device that can more conveniently and efficiently clamp the hydraulic valve sleeve 2 without affecting the surface processing of the valve sleeve 2. By designing a specific limiting mechanism 5 and an oil groove pressurizing mechanism 32, this device can quickly limit the oil hole 21 inside the valve sleeve 2, and the limiting block 52 will not obstruct the surface of the valve sleeve 2, thus facilitating subsequent processing, such as polishing. In addition, a valve sleeve positioning mechanism 6 is also provided to assist the valve sleeve 2 in quickly and accurately fitting onto the clamping rod 3, improving clamping efficiency.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A clamping device for a hydraulic valve sleeve, characterized in that, It includes a mounting base (1), a clamping rod (3) disposed on the mounting base (1) for inserting into the valve sleeve (2), a drive mechanism (4) connected between the mounting base (1) and the clamping rod (3) for driving the clamping rod (3) to rotate, and a limiting mechanism (5) disposed on the clamping rod (3) for limiting the valve sleeve (2). The limiting mechanism (5) includes a first groove (51) embedded in the side of the clamping rod (3), a limiting block (52) is slidably provided in the first groove (51), the limiting block (52) is movably locked in the oil hole (21) of the valve sleeve (2), and a first spring (53) is connected between the limiting block (52) and the first groove (51). The clamping rod (3) has an oil groove (31) inside, the first groove (51) is connected to the oil groove (31), and the clamping rod (3) is provided with an oil groove pressurization mechanism (32).

2. The clamping device for a hydraulic valve sleeve according to claim 1, characterized in that, The length direction of the oil groove (31) is consistent with the length direction of the clamping rod (3), and the side of the oil groove (31) is connected to the first groove (51) through the connecting groove (33).

3. The clamping device for a hydraulic valve sleeve according to claim 2, characterized in that, The oil tank pressurization mechanism (32) includes a pressurization cylinder (321) fixed on the mounting base (1), and a pressurization plate (322) is fixed to the head of the pressurization cylinder (321). The pressurization plate (322) is movably disposed at the rear end inside the oil tank (31).

4. The clamping device for a hydraulic valve sleeve according to claim 1, characterized in that, The front of the limiting block (52) is circular, and the head of the limiting block (52) is provided with a trapezoidal surface.

5. The clamping device for a hydraulic valve sleeve according to claim 1, characterized in that, The drive mechanism (4) includes a servo motor (41) fixed on the mounting base (1), a drive gear (42) fixed to the output shaft of the servo motor (41), and a driven gear (43) fixed on the clamping rod (3). The drive gear (42) and the driven gear (43) are meshed together.

6. The clamping device for a hydraulic valve sleeve according to claim 1, characterized in that, The side of the clamping rod (3) is provided with a valve sleeve positioning mechanism (6); The valve sleeve positioning mechanism (6) includes a second groove (61) embedded in the side of the clamping rod (3), a positioning block (62) movably disposed in the second groove (61), and a second spring (63) connected between the positioning block (62) and the second groove (61).

7. The clamping device for a hydraulic valve sleeve according to claim 6, characterized in that, The head of the positioning block (62) has a spherical structure.

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