A valve stem press device

Abstract

The utility model provides a kind of valve stem compression device, including fixed frame, locating seat and down mechanism, locating seat is fixed on fixed frame;Locating seat has fixed platform, and fixed platform is equipped with locating hole, and locating hole is used to insert and install the stem of valve stem;Fixed platform is equipped with vertical arm, and vertical arm is equipped with vertical guide slot, and guide slot is used to slide and install the paddle on valve stem, and one end of paddle is located in guide slot, and the other end of paddle is equipped with cylindrical portion, and installation hole is equipped in cylindrical portion, and installation hole is interference assembly with stem;Down mechanism is installed on fixed frame, and down mechanism has output end moving along vertical direction, and down mechanism is used to extrude cylindrical portion.This scheme is positioned to paddle and stem by locating seat simultaneously, so that it is not necessary to manually support paddle, interference assembly of cylindrical portion and stem can be realized, and security risk can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment, specifically to a valve stem pressing device. Background Technology

[0002] During valve stem machining, the deflector plate is typically press-fitted to the stem. Due to the irregular shape of the deflector plate, it usually needs to be manually supported before a cylinder is used to press it into place, thus achieving the assembly of the deflector plate and the stem. However, manually supporting the deflector plate during stamping can easily lead to workplace accidents, increasing production risks.

[0003] Therefore, the technical problem that this application needs to solve is: how to reduce the safety risks during valve stem interference fit. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a valve stem pressing device, which uses a positioning seat to synchronously position the lever and the stem, thus eliminating the need for manual support of the lever. The stem is inserted into the positioning hole of the fixed platform, and then the lever is inserted into the vertical guide groove. At this time, the mounting hole of the cylindrical part is coaxially aligned with the stem. Then, the pressing mechanism presses the cylindrical part downward, thereby achieving an interference fit between the cylindrical part and the stem.

[0005] Specifically, this utility model proposes a valve stem pressing device, including a fixed frame, a positioning seat and a pressing mechanism, wherein the positioning seat is fixed on the fixed frame;

[0006] The positioning seat has a fixed platform with a positioning hole for inserting and installing the stem of the valve stem; the fixed platform has a vertical arm with a vertical guide groove for slidingly installing a lever on the valve stem; one end of the lever is located in the guide groove, and the other end of the lever has a cylindrical part with a mounting hole, which is interference-fitted with the stem.

[0007] The pressing mechanism is mounted on the fixed frame and has an output end that moves in a vertical direction. The pressing mechanism is used to press the cylindrical part.

[0008] Preferably, the fixing frame includes a first mounting plate, a second mounting plate, and a support rod, wherein the second mounting plate is located above the first mounting plate, and the second mounting plate is fixed to the first mounting plate by the support rod;

[0009] The positioning seat is fixed on the first mounting plate, and the second mounting plate is used to fix the pressing mechanism.

[0010] Preferably, the pressing mechanism includes a telescopic member and a pressing column. The telescopic member is mounted on the second mounting plate and has a piston rod that moves in a vertical direction. The lower end of the piston rod is fixed with a pressing column, which is used to press the cylindrical portion downward.

[0011] Preferably, a trigger part is fixed on the pressing column, and a gap is left between the trigger part and the lower end face of the pressing column;

[0012] The mounting bracket is equipped with a position detection device, which is used to detect the height of the trigger part.

[0013] Preferably, the position detection device is mounted on the first mounting plate via a height adjustment component.

[0014] Preferably, the height adjustment component includes a guide rod and a mounting block. The guide rod is fixed to the first mounting plate, and the mounting block is provided with a guide hole. The mounting block is sleeved on the guide rod through the guide hole.

[0015] The mounting block is provided with a locking screw for fastening the mounting block to the guide rod.

[0016] Preferably, the position detection device is a photoelectric switch.

[0017] Preferably, the position detection device is a micro switch.

[0018] Preferably, the triggering part is an annular plate, which is used to press the micro switch. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the valve stem pressing device proposed in this embodiment;

[0021] Figure 2 This is a schematic diagram of the installation structure between the lever and the valve stem in this embodiment;

[0022] Figure 3 This is a three-dimensional structural diagram of the positioning seat in this embodiment;

[0023] Figure 4 This is a schematic diagram of the installation structure of the locking screw in this embodiment.

[0024] The reference numerals used in the attached figures are as follows:

[0025] 10-Pulley; 11-Fixed bracket; 12-Positioning seat; 13-Pressing mechanism; 14-Fixed platform; 15-Rod; 16-Vertical arm; 17-Guide groove; 18-Cylindrical part; 19-Mounting hole; 20-First mounting plate; 21-Second mounting plate; 22-Support rod; 23-Telescopic component; 24-Pressing column; 25-Piston rod; 26-Guide rod; 27-Mounting block; 28-Micro switch; 29-Annular plate; 30-Separation block; 31-Notch; 32-Locking screw; 33-Guide hole. Detailed Implementation

[0026] The technical solutions of this application will be further described below with reference to specific embodiments, but this application is not limited to these embodiments.

[0027] like Figures 1 to 4 As shown, this embodiment proposes a valve stem pressing device, including a fixed frame 11, a positioning seat 12 and a pressing mechanism 13, wherein the positioning seat 12 is fixed on the fixed frame 11;

[0028] The positioning base 12 has a fixed platform 14 with a positioning hole for inserting and installing the rod portion 15 of the valve stem. The fixed platform 14 has a vertical arm 16 with a vertical guide groove 17 extending vertically. The guide groove 17 is used to slide the lever 10 on the valve stem. One end of the lever 10 is located in the guide groove 17 to allow it to slide vertically. The other end of the lever 10 has a cylindrical portion 18 with a mounting hole 19. The mounting hole 19 is interference-fitted with the rod portion 15.

[0029] The pressing mechanism 13 is mounted on the fixed frame 11, and the pressing mechanism 13 has an output end that moves in the vertical direction. The pressing mechanism 13 is used to press the cylindrical part 18.

[0030] The technical advantage of this solution is that the positioning seat 12 synchronously positions the lever 10 and the rod 15, eliminating the need for manual support of the lever 10. The rod 15 is inserted into the positioning hole of the fixed platform 14, and then the lever 10 is inserted into the vertical guide groove 17. At this point, the mounting hole 19 of the cylindrical part 18 is coaxially aligned with the rod 15. Then, the pressing mechanism 13 presses the cylindrical part 18 downwards, thereby achieving an interference fit between the cylindrical part 18 and the rod 15 and reducing safety risks.

[0031] Furthermore, the top of the rod 15 is chamfered, which makes it easier for the top of the rod 15 to mate with the mounting hole 19 of the cylindrical part 18.

[0032] Furthermore, the bottom of the mounting hole 19 of the cylindrical part 18 is chamfered, which makes it easier for the rod part 15 and the mounting hole 19 of the cylindrical part 18 to be coaxially connected.

[0033] As one embodiment of this example, the fixing frame 11 includes a first mounting plate 20, a second mounting plate 21 and a support rod 22. The second mounting plate 21 is located above the first mounting plate 20, and the second mounting plate 21 is fixed to the first mounting plate 20 by the support rod 22.

[0034] The positioning seat 12 is fixed on the first mounting plate 20, and the second mounting plate 21 is used to fix the pressing mechanism 13.

[0035] In one embodiment of this invention, the pressing mechanism 13 includes a telescopic member 23 and a pressing column 24. The telescopic member 23 is mounted on the second mounting plate 21 and has a piston rod 25 that moves in the vertical direction. The lower end of the piston rod 25 is fixed with the pressing column 24, which is used to press the cylindrical portion 18 downward.

[0036] The telescopic component 23 in this design uses a pneumatic cylinder or a hydraulic cylinder.

[0037] As one embodiment of this example, a trigger part is fixed on the pressing column 24, and a gap is left between the trigger part and the lower end face of the pressing column 24;

[0038] The fixing frame 11 is equipped with a position detection device, which is used to detect the height of the trigger part.

[0039] This embodiment is used to optimize the entire stamping process. This solution uses a detection device to check the height of the trigger part. When the trigger part reaches the target height, the position detection device sends feedback to the controller, which then controls the telescopic member 23 to stop moving downward.

[0040] In one embodiment of this invention, the position detection device is mounted on the first mounting plate 20 via a height adjustment component.

[0041] The technical advantage of this solution is that it allows for adjustment of the height of the position detection device, making it easier to find a suitable installation height.

[0042] As one embodiment of this example, the height adjustment component includes a guide rod 26 and a mounting block 27. The guide rod 26 is fixed on the first mounting plate 20, and the mounting block 27 is provided with a guide hole 33. The mounting block 27 is sleeved on the guide rod 26 through the guide hole 33.

[0043] The mounting block 27 is provided with a locking screw 32 for fastening the mounting block 27 to the guide rod 26.

[0044] Furthermore, the side of the mounting block 27 is provided with a notch 31 that communicates with the guide hole 33. Two separation blocks 30 are formed on both sides of the notch 31. The two separation blocks 30 are locked together by a locking screw 32. When the locking screw 32 locks the two separation blocks 30, the gap of the notch 31 becomes smaller and the opening area of ​​the guide hole 33 becomes smaller, thereby locking the guide rod 26. At this time, the mounting block 27 is locked on the guide rod 26.

[0045] In one embodiment of this invention, the position detection device is a photoelectric switch. Photoelectric switches are commonly used in industrial manufacturing, and their working principle will not be described in detail. The triggering part can be a bump or protrusion to facilitate photoelectric switch detection. The photoelectric switch and the bump or protrusion are not shown in the accompanying drawings.

[0046] In one embodiment of this invention, the position detection device is a micro switch 28. The micro switch 28 is also an existing device, and its working principle will not be described in detail here. Since the triggering mode of the micro switch 28 requires mechanical compression, the triggering part is designed as an annular plate 29, so that the annular plate 29 can fully compress the micro switch 28. The micro switch 28 feeds a signal back to the controller, which controls the stopping and retraction of the telescopic member 23.

[0047] Alternatively, this solution can also employ manual control of the telescopic component 23. Each of the telescopic component 23's extension and retraction is controlled by a separate button, allowing adjustment of its operation. Since the telescopic component 23 utilizes existing pneumatic or hydraulic cylinders, its working principle is explained in detail in this document and will not be elaborated upon further.

[0048] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A valve stem pressing device, characterized in that, It includes a fixed frame (11), a positioning seat (12) and a pressing mechanism (13), wherein the positioning seat (12) is fixed on the fixed frame (11); The positioning seat (12) has a fixed platform (14), and the fixed platform (14) is provided with a positioning hole for inserting and installing the rod part (15) of the valve stem; the fixed platform (14) is provided with a vertical arm (16), and the vertical arm (16) is provided with a vertical guide groove (17), the guide groove (17) is used for slidingly installing the paddle (10) on the valve stem, one end of the paddle (10) is provided in the guide groove (17), and the other end of the paddle (10) is provided with a cylindrical part (18), and the cylindrical part (18) is provided with a mounting hole (19), the mounting hole (19) and the rod part (15) are interference fit; The pressing mechanism (13) is mounted on the fixed frame (11) and has an output end that moves in the vertical direction. The pressing mechanism (13) is used to press the cylindrical part (18).

2. The valve stem pressing device according to claim 1, characterized in that, The fixing frame (11) includes a first mounting plate (20), a second mounting plate (21) and a support rod (22). The second mounting plate (21) is located above the first mounting plate (20) and is fixed to the first mounting plate (20) by the support rod (22). The positioning seat (12) is fixed on the first mounting plate (20), and the second mounting plate (21) is used to fix the pressing mechanism (13).

3. The valve stem pressing device according to claim 2, characterized in that, The pressing mechanism (13) includes a telescopic member (23) and a pressing column (24). The telescopic member (23) is mounted on the second mounting plate (21), and the telescopic member (23) has a piston rod (25) that moves in the vertical direction. The lower end of the piston rod (25) is fixed with the pressing column (24), and the pressing column (24) is used to press the cylindrical part (18) downward.

4. The valve stem pressing device according to claim 3, characterized in that, A trigger part is fixed on the pressing column (24), and a gap is left between the trigger part and the lower end face of the pressing column (24); The fixing frame (11) is provided with a position detection device, which is used to detect the height of the trigger part.

5. The valve stem pressing device according to claim 4, characterized in that, The position detection device is mounted on the first mounting plate (20) via a height adjustment component.

6. The valve stem pressing device according to claim 5, characterized in that, The height adjustment component includes a guide rod (26) and a mounting block (27). The guide rod (26) is fixed on the first mounting plate (20). The mounting block (27) is provided with a guide hole (33). The mounting block (27) is sleeved on the guide rod (26) through the guide hole (33). The mounting block (27) is provided with a locking screw (32) for fastening the mounting block (27) onto the guide rod (26).

7. The valve stem pressing device according to claim 5, characterized in that, The position detection device is a photoelectric switch.

8. The valve stem pressing device according to claim 6, characterized in that, The position detection device is a micro switch (28).

9. The valve stem pressing device according to claim 8, characterized in that, The triggering part is an annular plate (29), which is used to press the micro switch (28).

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