Clamp for machining and assembling fastening type valve rod

Abstract

The utility model discloses a fastening type valve rod machining and assembling clamp which comprises a machine box, a fixing frame and an oil cylinder are fixedly installed on the top face of the machine box, the oil cylinder is fixedly installed on the top face of the fixing frame, and an output shaft of the oil cylinder movably penetrates through the top face of the oil cylinder. The movable plate is fixedly installed at the output shaft end of the oil cylinder, and the movable plate is in sliding connection with the inner wall face of the fixing frame; the top end of the connecting shaft is connected with the bottom surface of the movable plate through a bearing; and the center of the top surface of the pressing box is fixedly connected with the bottom end of the connecting shaft. According to the clamp for machining and assembling the fastening type valve rod, assembly can be efficiently and accurately completed through autorotation, meanwhile, a workpiece can be pressed and rotated to be in threaded connection, the workpiece can be installed at different positions of the valve rod, various installation requirements are met, the use functionality of machining and assembling of the valve rod is improved, operation is easy, convenient and flexible, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of valve stem processing, in particular to a fixture for processing and assembling a fastening type valve stem. Background Technique

[0002] The valve stem is a component that realizes the opening and closing or adjustment of the valve. The fastening type valve stem is an important component in the valve. During the opening and closing process of the valve, it is not only a moving part and a stressed part, but also a sealing part. During the processing of the valve stem, it needs to be assembled with other components. However, the existing valve stem assembly equipment still has certain defects. For example:

[0003] For the "equipment for automatically pressing and installing a valve stem" with the application number CN202120792146.X, during use, it can only press-fit the valve stem with other components, and cannot be used for assembling components that are thread-connected to the valve stem. At the same time, it can only install other components at the bottom end of the valve stem, and cannot assemble components installed at the middle section of the valve stem, unable to meet diverse assembly requirements, and there are limitations in use. In view of this, a fixture for processing and assembling a fastening type valve stem is proposed to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fixture for processing and assembling a fastening type valve stem to solve the problem that the existing valve stem assembly equipment cannot meet diverse assembly requirements mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A fixture for processing and assembling a fastening type valve stem, including a machine case, on the top surface of which a fixed frame is fixedly installed,

[0006] An oil cylinder, which is fixedly installed on the top surface of the fixed frame, and the output shaft of the oil cylinder movably penetrates through the top surface of the oil cylinder;

[0007] A moving plate, which is fixedly installed at the end of the output shaft of the oil cylinder, and the moving plate is slidably connected to the inner wall surface of the fixed frame;

[0008] A connecting shaft, the top end of which is connected to the bottom surface of the moving plate by a bearing;

[0009] A pressing box, the center of the top surface of which is fixedly connected to the bottom end of the connecting shaft;

[0010] A first fixing mechanism, which is arranged on the machine case;

[0011] A rotating mechanism, which is arranged on the inner wall surface of the pressing box;

[0012] A second fixing mechanism, which is connected to the rotating mechanism;

[0013] A rotating mechanism, and the rotating mechanism is connected to the second fixing mechanism.

[0014] Adopting the above technical solution is convenient for the press-fitting and threaded connection installation of the valve stem and the workpiece, and can meet the needs of being installed at different positions of the valve stem.

[0015] As a preferred technical solution of the present utility model, the first fixing mechanism includes:

[0016] A first motor, and the first motor is fixedly installed on the right side of the inner bottom surface of the chassis;

[0017] A bidirectional lead screw, the right end of the bidirectional lead screw is fixedly connected to the shaft end of the first motor, and the left end of the bidirectional lead screw is connected to the left inner wall surface of the chassis by a bearing;

[0018] Sliding plates, the bottom surfaces of two symmetrically arranged sliding plates are slidably connected to the inner bottom surface of the chassis, and the bidirectional lead screw passes through the sliding plates, and the bidirectional lead screw is threadedly connected to the sliding plates, and at the same time the sliding plates pass through the first through groove opened on the top surface of the chassis;

[0019] A first clamping block, and the first clamping block is fixedly installed on the top surface of the sliding plate.

[0020] Adopting the above technical solution is convenient for the sliding plate to drive the first clamping block to move by rotating the bidirectional lead screw to clamp and fix the workpiece.

[0021] As a preferred technical solution of the present utility model, the rotating mechanism includes:

[0022] A cylinder, and the cylinder is fixedly installed on the right inner wall surface of the pressing box;

[0023] A rack, and the rack is fixedly installed on the output end of the cylinder;

[0024] A rotating shaft, the top end of the rotating shaft is connected to the center of the inner top surface of the pressing box by a bearing;

[0025] A transmission gear, the transmission gear is fixedly sleeved on the rotating shaft, and the transmission gear is meshed and connected to the rack.

[0026] Adopting the above technical solution is convenient for the rack to drive the rotating shaft to rotate through the transmission gear when moving.

[0027] As a preferred technical solution of the present utility model, the second fixing mechanism includes:

[0028] A turntable, and the turntable is coaxially and fixedly installed at the bottom end of the rotating shaft;

[0029] Cylindrical pins, two symmetrically arranged cylindrical pins are fixedly installed on the bottom surface of the turntable;

[0030] A connecting plate which is sleeved on the surface of the cylindrical pin, and the connecting plate is in bearing connection with the cylindrical pin;

[0031] An installation rod, the top end of which is in bearing connection with the outer side of the bottom surface of the connecting plate;

[0032] A slider which is fixedly sleeved on the surface of the installation rod, and the slider is in sliding connection with a second through groove which is throughly opened on the bottom surface of the pressing box;

[0033] A second clamping block which is fixedly installed at the bottom end of the installation rod.

[0034] By adopting the above technical solution, when the rotating shaft rotates, it is convenient to drive the cylindrical pin to rotate through the turntable, so that the connecting plate drives the installation rod and the second clamping block to move under the action of the slider, thereby clamping and fixing the valve rod through the second clamping block.

[0035] As a preferred technical solution of the present utility model, a through hole is throughly opened on the top surface of the chassis, and the longitudinal axis center line of the through hole is collinear with the longitudinal axis center line of the turntable.

[0036] By adopting the above technical solution, it is convenient to install and enable the valve rod to move downward through the through hole, so as to realize installing the workpiece at different positions on the valve rod.

[0037] As a preferred technical solution of the present utility model, the rotating mechanism includes:

[0038] A second motor which is fixedly installed on the bottom surface of the moving plate;

[0039] A driving gear which is coaxially and fixedly installed at the shaft end of the second motor;

[0040] A driven gear which is fixedly sleeved on the surface of the connecting shaft, and the driven gear is in meshing connection with the driving gear.

[0041] By adopting the above technical solution, it is convenient for the second motor to start and drive the driving gear to rotate, and the connecting shaft drives the pressing box to rotate through the driven gear, so that the clamped and fixed valve rod rotates synchronously, and the threaded connection installation with the workpiece can be realized.

[0042] Compared with the prior art, the beneficial effects of the present utility model are as follows: The fixture for processing and assembling the fastening type valve rod can complete the assembly efficiently and accurately by self-rotation, and at the same time, the workpiece can be press-fitted and rotated for threaded connection, and the workpiece can be installed at different positions on the valve rod, meeting various installation requirements, improving the use functionality of the valve rod processing and assembly, being simple and flexible to operate, and having strong practicability;

[0043] The two-way lead screw is rotated by the first motor, causing the two sliding plates to move towards each other, thereby driving the first clamping blocks to move towards each other synchronously to clamp and fix the workpiece;

[0044] The air cylinder is started to move the rack, the transmission gear drives the rotating shaft to rotate, the turntable drives the cylindrical pin to rotate, and then the connecting plate drives the mounting rod and the second clamping block to move under the action of the slider, so as to clamp and fix the valve stem, and at the same time ensure that the top plate of the valve stem abuts against the bottom surface of the pressure box;

[0045] The oil cylinder is started to drive the pressure box to move downward through the connecting shaft by the moving plate, so that the clamped and fixed valve stem can move downward synchronously to realize the press-fitting of the valve stem and the workpiece;

[0046] The setting of the second motor enables the driving gear to rotate, the driven gear drives the connecting shaft and the pressure box to rotate, so that the downward moving valve stem rotates synchronously, and the threaded connection installation of the valve stem and the workpiece can be realized;

[0047] Through the setting of the through hole, it can be ensured that during the installation process, the valve stem can pass through the through hole and move downward to install the workpiece at different positions of the valve stem. Description of the Drawings

[0048] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0049] Figure 2 It is a schematic diagram of the cross-sectional structure of the chassis of the present invention;

[0050] Figure 3 It is a schematic diagram of the connection structure between the transmission gear and the rack of the present invention;

[0051] Figure 4 It is a schematic diagram of the connection structure between the cylindrical pin, the turntable and the connecting plate of the present invention;

[0052] Figure 5 It is a schematic diagram of the connection structure between the slider and the second through groove of the present invention.

[0053] In the figure: 1, chassis; 2, fixed frame; 3, oil cylinder; 4, moving plate; 5, connecting shaft; 6, pressure box; 7, first motor; 8, two-way lead screw; 9, sliding plate; 10, first through groove; 11, first clamping block; 12, air cylinder; 13, rack; 14, rotating shaft; 15, transmission gear; 16, turntable; 17, cylindrical pin; 18, connecting plate; 19, mounting rod; 20, slider; 21, second through groove; 22, second clamping block; 23, through hole; 24, second motor; 25, driving gear; 26, driven gear. Detailed Implementation Modes

[0054] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment 1:

[0055] Please refer to Figures 1-5 , the technical solution of the present utility model: A fixture for processing and assembling a fastening type valve stem includes a machine case 1. A fixed frame 2 is fixedly installed on the top surface of the machine case 1. An oil cylinder 3 is fixedly installed on the top surface of the fixed frame 2, and the output shaft of the oil cylinder 3 movably penetrates through the top surface of the oil cylinder 3. A moving plate 4 is fixedly installed at the end of the output shaft of the oil cylinder 3, and the moving plate 4 is slidably connected to the inner wall surface of the fixed frame 2. The top end of a connecting shaft 5 is connected to the bottom surface of the moving plate 4 by a bearing. The center of the top surface of a pressing box 6 is fixedly connected to the bottom end of the connecting shaft 5;

[0056] A first motor 7 is fixedly installed on the right side of the inner bottom surface of the machine case 1. The right end of a bidirectional lead screw 8 is fixedly connected to the shaft end of the first motor 7, and the left end of the bidirectional lead screw 8 is connected to the left inner wall surface of the machine case 1 by a bearing. The bottom surfaces of two symmetrically arranged sliding plates 9 are slidably connected to the inner bottom surface of the machine case 1, and the bidirectional lead screw 8 penetrates through the sliding plates 9, and the bidirectional lead screw 8 is threadedly connected to the sliding plates 9. At the same time, the sliding plates 9 penetrate through a first through groove 10 opened on the top surface of the machine case 1. A first clamping block 11 is fixedly installed on the top surface of the sliding plate 9;

[0057] A cylinder 12 is fixedly installed on the right inner wall surface of the pressing box 6. A rack 13 is fixedly installed at the output end of the cylinder 12. The top end of a rotating shaft 14 is connected to the center of the inner top surface of the pressing box 6 by a bearing. A transmission gear 15 is fixedly sleeved on the rotating shaft 14, and the transmission gear 15 is meshed with the rack 13;

[0058] A turntable 16 is coaxially fixedly installed at the bottom end of the rotating shaft 14. Two symmetrically arranged cylindrical pins 17 are fixedly installed on the bottom surface of the turntable 16. A connecting plate 18 is sleeved on the surface of the cylindrical pins 17, and the connecting plate 18 is connected to the cylindrical pins 17 by a bearing. The top end of an installation rod 19 is connected to the outer bottom surface of the connecting plate 18 by a bearing. A slider 20 is fixedly sleeved on the surface of the installation rod 19, and the slider 20 is slidably connected to a second through groove 21 opened through the bottom surface of the pressing box 6. A second clamping block 22 is fixedly installed at the bottom end of the installation rod 19;

[0059] A through hole 23 is opened through the top surface of the machine case 1, and the longitudinal axis center line of the through hole 23 is collinear with the longitudinal axis center line of the turntable 16;

[0060] The second motor 24 is fixedly installed on the bottom surface of the moving plate 4. The driving gear 25 is coaxially and fixedly installed at the shaft end of the second motor 24. The driven gear 26 is fixedly sleeved on the surface of the connecting shaft 5, and the driven gear 26 is meshed and connected with the driving gear 25.

[0061] Working principle: When in use, start the first motor 7 to rotate the bidirectional lead screw 8, so that the two sliding plates 9 threadedly connected with the bidirectional lead screw 8 move towards each other, thereby driving the first clamping block 11 to move synchronously by the sliding plate 9, and further clamping and fixing the workpiece.

[0062] Start the cylinder 12 to rotate the rack 13, so that the transmission gear 15 meshed with the rack 13 drives the rotating shaft 14 to rotate. The rotation of the rotating shaft 14 drives the turntable 16 and the cylindrical pin 17 to rotate. Through the connecting plate 18, the mounting rod 19 and the second clamping block 22 move inwards under the action of the slider 20, so that the valve stem is clamped and fixed by the second clamping block 22, and at the same time, ensure that the top of the valve stem abuts against the bottom surface of the pressure box 6.

[0063] Start the oil cylinder 3 to move the moving plate 4 downwards, so that the connecting shaft 5 drives the pressure box 6 to move downwards synchronously, thereby moving the clamped valve stem downwards to realize press-fitting with the workpiece.

[0064] When the workpiece and the valve stem are in a threaded connection, during the process of the pressure box 6 driving the valve stem to move downwards, start the second motor 24 to rotate the driving gear 25, so that the driven gear 26 meshed with the driving gear 25 drives the connecting shaft 5 to rotate, so that the pressure box 6 drives the valve stem to rotate while moving downwards, and the threaded connection assembly of the valve stem and the workpiece can be realized.

[0065] During the processing and assembly of the valve stem, through the setting of the through hole 23, it can be ensured that the valve stem moving downwards passes through the through hole 23 and then moves downwards, and the workpiece can be installed at different positions of the valve stem. Embodiment 2:

[0066] The difference between this embodiment and Embodiment 1 is that a protective cover with openings at both left and right ends is sleeved outside the bidirectional lead screw 8, and the protective cover is fixedly installed on the inner bottom surface of the chassis 1, and the protective cover is located directly below the through hole 23. Through the setting of the protective cover, it can be avoided that the valve stem interferes with the bidirectional lead screw 8 during the downward movement during assembly.

[0067] The content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0068] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A fixture for processing and assembling a fastening type valve stem, comprising a chassis (1), and a fixing frame (2) is fixedly installed on the top surface of the chassis (1), characterized in that, It further includes: An oil cylinder (3), which is fixedly installed on the top surface of the fixed frame (2), and the output shaft of the oil cylinder (3) movably penetrates through the top surface of the oil cylinder (3); A moving plate (4), which is fixedly installed at the end of the output shaft of the oil cylinder (3), and the moving plate (4) is slidably connected to the inner wall surface of the fixed frame (2); A connecting shaft (5), the top end of which is connected to the bottom surface of the moving plate (4) by a bearing; A pressing box (6), the center of the top surface of which is fixedly connected to the bottom end of the connecting shaft (5); A first fixing mechanism, which is arranged on the chassis (1); A rotating mechanism, which is arranged on the inner wall surface of the pressing box (6); A second fixing mechanism, which is connected to the rotating mechanism; A rotating mechanism, which is connected to the second fixing mechanism.

2. The fixture for processing and assembling a fastening type valve stem according to claim 1, wherein, The first fixing mechanism includes: A first motor (7), which is fixedly installed on the right side of the inner bottom surface of the chassis (1); A bidirectional lead screw (8), the right end of which is fixedly connected to the shaft end of the first motor (7), and the left end of the bidirectional lead screw (8) is connected to the left inner wall surface of the chassis (1) by a bearing; Sliding plates (9), the bottom surfaces of two symmetrically arranged sliding plates (9) are slidably connected to the inner bottom surface of the chassis (1), and the bidirectional lead screw (8) penetrates through the sliding plates (9), and the bidirectional lead screw (8) is threadedly connected to the sliding plates (9), and at the same time the sliding plates (9) penetrate through the first through groove (10) opened on the top surface of the chassis (1); A first clamping block (11), which is fixedly installed on the top surface of the sliding plate (9).

3. A fixture for processing and assembling a fastening type valve stem according to claim 2, characterized in that, The rotating mechanism includes: A cylinder (12), which is fixedly installed on the right inner wall surface of the pressing box (6); A rack (13), which is fixedly installed at the output end of the cylinder (12); A rotating shaft (14), the top end of which is connected to the center of the inner top surface of the pressing box (6) by a bearing; A transmission gear (15), which is fixedly sleeved on the rotating shaft (14), and the transmission gear (15) is meshed with the rack (13).

4. A fixture for machining and assembling a fastening type valve stem according to claim 3, characterized in that, The second fixing mechanism includes: A turntable (16), which is coaxially and fixedly installed at the bottom end of the rotating shaft (14); Cylindrical pins (17), two symmetrically arranged cylindrical pins (17) are fixedly installed on the bottom surface of the turntable (16); A connecting plate (18), which is sleeved on the surface of the cylindrical pin (17), and the connecting plate (18) is connected to the cylindrical pin (17) by a bearing; A mounting rod (19), the top end of which is connected to the outer side of the bottom surface of the connecting plate (18) by a bearing; A slider (20), which is fixedly sleeved on the surface of the mounting rod (19), and the slider (20) is slidably connected to the second through groove (21) opened on the bottom surface of the pressing box (6); The second clamping block (22), and the second clamping block (22) is fixedly installed at the bottom end of the mounting rod (19).

5. A fixture for machining and assembling a fastening type valve stem according to claim 4, characterized in that, A through hole (23) is formed through the top surface of the chassis (1), and the longitudinal axis center line of the through hole (23) is collinear with the longitudinal axis center line of the turntable (16).

6. The fixture for processing and assembling a fastening type valve stem according to claim 1, wherein The rotating mechanism includes: A second motor (24), and the second motor (24) is fixedly installed on the bottom surface of the moving plate (4); A driving gear (25), and the driving gear (25) is coaxially and fixedly installed at the shaft end of the second motor (24); A driven gear (26), and the driven gear (26) is fixedly sleeved on the surface of the connecting shaft (5), and the driven gear (26) is meshed and connected with the driving gear (25).

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