A check valve machining jig

Abstract

The utility model provides a kind of check valve processing fixture, including the upper clamping plate and lower clamping plate that can realize the clamping of check valve to each other and coincide, the lower clamping plate side is equipped with several clamping grooves, the lower clamping plate other side is equipped with several positioning grooves, and the upper clamping plate is equipped with several notches aligned with clamping groove. The device is easy to operate, can simultaneously carry out the clamping work of several check valves, and at the same time, the next group of processing valve body and valve clack assembly can be prepared using the time period of processing process, so that the processing efficiency of check valve can be effectively improved, and it also has better fixing effect.

Description

Technical Field

[0001] This utility model relates to the field of valve processing technology, specifically to a check valve processing fixture. Background Technology

[0002] A valve is a pipeline accessory used to open and close pipelines, control flow direction, and regulate and control the parameters of the conveyed medium. A valve typically consists of a valve body, valve cover, valve disc, and valve stem. During valve manufacturing, drilling is required. Due to the high precision requirements for the position of the drilled hole relative to the valve body, a special fixture is usually needed to hold the valve in place to facilitate the drilling process for check valves.

[0003] Patent publication number CN 115555882 A discloses a fixture for valve processing, including a base and two sets of clamping mechanisms. Each set of clamping mechanisms includes a first hydraulic push rod, a clamping frame, a clamping assembly, a locking assembly, and a top support assembly. The clamping assembly includes multiple clamping blocks and multiple first elastic elements. The clamping blocks are horizontally slidable within the clamping frame, and the locking assembly is used to clamp the clamping blocks after they have adapted to the shape of the valve. The top support assembly includes a second hydraulic push rod, two telescopic rods, two first horizontal rods, two second horizontal rods, two vertical rods, and two adjusting connecting rods.

[0004] However, the device still has the following problems: the operator manually tightens the external thread plug to fix the valve disc assembly in the valve body, and then puts it into the fixture for processing. However, the fixture can only process one product at a time, and its processing efficiency is low. Utility Model Content

[0005] To address the problems existing in the prior art, a check valve machining fixture is provided. This device is easy to operate, can clamp several check valves simultaneously, and can prepare the valve body and valve disc assembly for the next set of valves during the machining process, thereby effectively improving the machining efficiency of check valves and providing better fixation.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] This utility model proposes a check valve processing fixture, including an upper clamping plate and a lower clamping plate that fit together to clamp the check valve; the lower clamping plate has a plurality of slots on one side and a plurality of positioning slots on the other side, and the upper clamping plate has a plurality of notches that are aligned with the slots.

[0008] Preferably, it also includes a cylinder, which includes a piston rod capable of driving the upper clamping plate to move.

[0009] Preferably, the piston rod is fixedly connected with a sliding rod, the upper clamping plate slides through the sliding rod, and the sliding rod is threadedly connected with a nut.

[0010] Preferably, the diameter of the piston rod is greater than the diameter of the sliding rod, so that a supporting surface is formed between the sliding rod and the piston rod, the nut abuts against the upper surface of the upper clamping plate, and thus the lower surface of the upper clamping plate abuts against the supporting surface.

[0011] Preferably, the outer wall of the air cylinder is fixedly connected with the lower clamping plate, and the lower clamping plate is provided with a through hole through which the piston rod freely penetrates.

[0012] Preferably, the center of the clamping groove is inwardly recessed to form a recess, and the recess extends inwardly to one side of the positioning groove.

[0013] Preferably, the lower clamping plate is fixedly connected with a plurality of guide rods, the upper clamping plate is provided with a plurality of guide holes, and the guide rods slide through the guide holes.

[0014] Preferably, the lower clamping plate is detachably connected with a fixing sleeve at both ends, the fixing sleeve is slidably connected with a pressing rod, and the pressing rod is connected with the fixing sleeve through a spring.

[0015] Preferably, the first upper conductive block and the first lower conductive block are fixedly connected in one of the fixing sleeves, the second upper conductive block and the second lower conductive block are fixedly connected in the other fixing sleeve, and the pressing rod is fixedly connected with a conductive sliding block.

[0016] Preferably, the warning lamp further comprises two parallel circuits, one of the circuits is connected in series with the first upper conductive block and the second lower conductive block, and the other circuit is connected in series with the first lower conductive block and the second upper conductive block.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The utility model discloses a upper clamping plate and a lower clamping plate which are mutually opposite and can clamp check valves, an air cylinder is connected with the middle position of the upper clamping plate and can drive the upper clamping plate to move vertically, the clamping groove and the positioning groove are matched with each other and can better fix and clamp check valves, the operation is convenient, a plurality of check valves can be clamped at the same time, the next valve body and valve disc assembly can be prepared during the machining period, the machining efficiency of check valves can be improved, and the fixing effect is good.

[0019] 2. The utility model discloses a conductive block is provided with, when the upper clamping plate is inclined, will cause the pressure bar of being located at both sides to drop the distance of different difference, thereby make the conductive sliding block with upper conductive block and lower conductive block contact, realize the electrification of warning light, this time shows that check valve clamping is not in place, thereby make the operator first time to have the hidden danger of clamping, adjust and clean in time to the clamping plate, convenient to the processing work of check valve. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the references to the following drawings, in which:

[0021] Figure 1 It is the overall perspective view of the utility model Figure 1 ;

[0022] Figure 2 It is the overall perspective view of the utility model Figure 2 ;

[0023] Figure 3 It is the overall plan view of the utility model

[0024] Figure 4 It is the overall side view of the utility model

[0025] Figure 5 It is Figure 1 the structure diagram of piston rod part in

[0026] Figure 6 It is the overall front view of the utility model Figure 1 ;

[0027] Figure 7 It is the overall front view of the utility model Figure 2 ;

[0028] Figure 8 It is Figure 7 the structure diagram of left side fixed sleeve part in

[0029] Figure 9 It is Figure 7 the structure diagram of right side fixed sleeve part in

[0030] Figure 10 It is the warning light circuit schematic diagram in the utility model.

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 1 Upper clamping plate; 2 Lower clamping plate; 3 Cylinder; 4 Piston rod; 5 Nut; 6 Guide hole; 7 Slide rod; 8 Slot; 9 Groove; 10 Positioning slot; 11 Notch; 12 Fixing sleeve; 13 Pressure rod; 14 Spring; 15 First upper conductive block; 16 First lower conductive block; 17 Second upper conductive block; 18 Second lower conductive block; 19 Warning conductive block; 20 Conductive slider. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] Example 1

[0035] like Figures 1-6 As shown, this embodiment proposes a check valve processing fixture, including an upper clamping plate 1 and a lower clamping plate 2 that can clamp the check valve by mating with each other. The lower clamping plate 2 has a plurality of slots 8 on one side and a plurality of positioning slots 10 on the other side. The upper clamping plate 1 has a plurality of notches 11 that are aligned with the slots 8.

[0036] The upper clamping plate 1 and the lower clamping plate 2 have the same length and width. When placing the clamp, the lower clamping plate can be placed directly on the tool table and can be connected to the tool table by bolts. In fact, the lower clamping plate 2 is fixed, while the upper clamping plate 1 can slide vertically, so that several check valves can be clamped at the same time.

[0037] It also includes a cylinder 3, which includes a piston rod 4. The piston rod 4 can drive the upper clamping plate 1 to move. The piston rod 4 is fixedly connected to a slide rod 7. The upper clamping plate 1 slides through the slide rod 7. The slide rod 7 is threadedly connected to a nut 5.

[0038] The diameter of piston rod 4 is larger than that of sliding rod 7, so that a support surface is formed between sliding rod 7 and piston rod 4. Nut 5 abuts against the upper surface of upper clamping plate 1, so that the lower surface of upper clamping plate 1 abuts against the support surface. The upper end of sliding rod 7 is provided with external thread, and nut 5 can be completely screwed out of sliding rod 7. After nut 5 is engaged with external thread, when nut 5 is screwed down, it can lock upper clamping plate 1. At this time, upper clamping plate 1 is located between support surface and nut 5.

[0039] The outer wall of the cylinder 3 is fixedly connected to the lower clamping plate 2. The lower clamping plate 2 has a through hole through which the piston rod 4 can freely pass. The piston rod 4 can slide freely in the through hole. At the same time, the cylinder 3 can support the lower clamping plate 2. The cylinder 3 is located in the middle position between the lower clamping plate 2 and the upper clamping plate 1, so as to better achieve auxiliary fixation of the lower clamping plate 2 and better drive the upper clamping plate 1 to move.

[0040] The center of the slot 8 is recessed inward to form a groove 9, which extends inward to one side of the positioning groove 10. The groove 9 can extend inward to the center of the positioning groove 10, and the groove 9 can divide the slot 8 into left and right sections, so that the slot 8 can better fit with the check valve.

[0041] The outer diameter of the check valve has a slight bulge or irregular shape in some areas. The presence of the groove 9 allows the slot 8 to better adapt to the check valve to a certain extent. At the same time, when the check valve is clamped in the slot 8, the clamping force will generate stress on the inner wall of the slot 8. The presence of the groove 9 can disperse the stress to the left and right sides of the slot 8, rather than concentrating it in the center of the slot 8. This can prevent the center of the slot 8 from prematurely wearing or being damaged due to stress concentration.

[0042] The lower clamping plate 2 is fixedly connected with several guide rods, and the upper clamping plate 1 is provided with several guide holes 6. The guide rods slide through the guide holes 6. The guide rods can limit and guide the movement of the upper clamping plate 1, so that the upper clamping plate 1 can only slide in the vertical direction.

[0043] Example 2

[0044] Reference Appendix Figures 7-10 The other structures are the same as in Embodiment 1, except that the clamping problem of the check valve is taken into account in this embodiment.

[0045] The lower clamping plate 2 is detachably connected to both ends with a fixing sleeve 12. The fixing sleeve 12 can be placed directly on the surface of the lower clamping plate 2, or it can be detachably connected to the lower clamping plate 2 by bolts. A pressure rod 13 is slidably connected inside the fixing sleeve 12. The pressure rod 13 is connected to the fixing sleeve 12 by a spring 14.

[0046] Spring 14 is sleeved on pressure rod 13. Spring 14 is located outside fixed sleeve 12. The upper end of spring 12 is connected to pressure rod 13, and the lower end of spring 12 is connected to fixed sleeve 12. Spring 12 is always in a compressed state. When spring 12 is used to realize the reset work of pressure rod 13, the upper surface of pressure rod 13 is always in contact with the lower surface of upper clamping plate 1.

[0047] One of the fixed sleeves 12 has a first upper conductive block 15 and a first lower conductive block 16 fixedly connected inside it, and the other fixed sleeve 12 has a second upper conductive block 17 and a second lower conductive block 18 fixedly connected inside it. The pressure rod 13 has a conductive slider 20 fixedly connected to it. When the pressure rod 13 moves downward, it can drive the conductive slider 20 to move simultaneously. The upper conductive block is located above the lower conductive block. When the conductive slider 20 contacts the upper conductive block and the lower conductive block, it can realize the circuit channel.

[0048] It also includes a warning light, which includes two parallel circuits. One circuit is connected in series with the first upper conductive block 15 and the second lower conductive block 18, and the other circuit is connected in series with the first lower conductive block 16 and the second upper conductive block 17.

[0049] like Figure 10 As shown, Figure 10 This is a schematic diagram of the warning light circuit in this utility model. When the first upper conductive block 15 and the second lower conductive block 18 are in contact with the conductive slider 20, the warning light can be powered on. When the first lower conductive block 16 and the second upper conductive block 17 are in contact with the conductive slider 20, the warning light can be powered on.

[0050] When the upper clamp does not tilt, the conductive sliders 20 on both sides move synchronously and are at the same height. First, the first upper conductive block 15 and the second upper conductive block 17 come into contact with the conductive slider 20. At this time, the warning light is not powered. Finally, the first lower conductive block 16 and the second lower conductive block 18 come into contact with the conductive slider 20. At this time, the warning light is also not powered.

[0051] However, if the check valve is not properly clamped, for example, if one side of the check valve is too high and the other side is too low, or if the guide rod used for guidance is tilted, or if the piston rod 4 of the cylinder 3 is tilted, the upper clamping plate 1 will tilt. When the upper clamping plate 1 descends, the two sides of the upper clamping plate 1 descend at different distances, which will cause the conductive sliders 20 located on both sides to descend at different distances, so that the conductive sliders 20 contact the upper conductive block and the lower conductive block, thereby energizing the warning light and thus realizing the alarm.

[0052] Two fixed sleeves 12 are also fixedly connected to warning conductive blocks 19. The warning conductive blocks 19 are connected to the warning light. The two warning conductive blocks 19 are at the same height and are set at the same height as the upper conductive block. When the two conductive sliders 20 contact the two warning conductive blocks 19 respectively, the warning conductive blocks 19 are energized, and the warning light lights up.

[0053] During the clamping of the check valve, as the pressure rod 13 descends, the conductive slider 20 first contacts the two warning conductive blocks 19. Then, the pressure rod 13 drives the conductive slider 20 to continue moving, and the warning light is de-energized. Specifically, the warning light will flash once. If the warning light is constantly on, it indicates that the upper clamping plate 1 has not descended to the required distance, and the check valve is not effectively clamped. This serves as a warning to the operator, allowing them to better understand the clamping status of the check valve.

[0054] The specific working process is as follows: The upper clamping plate 1 is slidably inserted onto the slide rod 7. The nut 5 is threadedly connected to the slide rod 7. The nut 5 is rotated downwards, which tightens the upper clamping plate 1 and finally makes the upper clamping plate 1 contact the piston rod 4, thus realizing the detachable connection between the upper clamping plate 1 and the piston rod 4.

[0055] Start cylinder 3 to create a suitable gap between upper clamping plate 1 and lower clamping plate 2. Place one end of the check valve into the positioning groove 10 and the other end into the slot 8. Several check valves can be placed at the same time. Then start cylinder 3. Cylinder 3 drives upper clamping plate 1 to move. Upper clamping plate 1 and lower clamping plate 2 cooperate to clamp the check valve.

[0056] Simultaneously, the upper clamping plate 1 presses down the pressure rod 13, which drives the conductive slider 20 to move. When the clamping is in place, the conductive slider 20 moves to contact the first lower conductive block 16 and the second lower conductive block 18. At this time, the warning light is not powered. During the above process, the warning light will flash once. If the warning light is constantly on, it means that the upper clamping plate 1 has not descended to the required distance, and the check valve has not been effectively clamped. The operator needs to reposition the check valve.

[0057] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A check valve machining fixture, characterized in that, It includes an upper clamping plate (1) and a lower clamping plate (2) that can clamp the check valve by interlocking with each other; the lower clamping plate (2) has several slots (8) on one side and several positioning slots (10) on the other side; the upper clamping plate (1) has several notches (11) that are aligned with the slots (8).

2. The check valve machining fixture according to claim 1, characterized in that, It also includes a cylinder (3), which includes a piston rod (4) that can drive the upper clamping plate (1) to move.

3. A check valve machining fixture according to claim 2, characterized in that, The piston rod (4) is fixedly connected to a slide rod (7), the upper clamping plate (1) slides through the slide rod (7), and the slide rod (7) is threadedly connected to a nut (5).

4. A check valve machining fixture according to claim 3, characterized in that, The diameter of the piston rod (4) is larger than the diameter of the slide rod (7), so that a support surface is formed between the slide rod (7) and the piston rod (4). The nut (5) abuts against the upper surface of the upper clamping plate (1), so that the lower surface of the upper clamping plate (1) abuts against the support surface.

5. A check valve machining fixture according to claim 1, characterized in that, The outer wall of the cylinder (3) is fixedly connected to the lower clamping plate (2), and the lower clamping plate (2) has a through hole for the piston rod (4) to pass through freely.

6. A check valve machining fixture according to claim 1, characterized in that, The card slot (8) is recessed inward at its center to form a groove (9), and the groove (9) extends inward to one side of the positioning groove (10).

7. A check valve machining fixture according to claim 1, characterized in that, The lower clamping plate (2) is fixedly connected with several guide rods, and the upper clamping plate (1) is provided with several guide holes (6), and the guide rods slide through the guide holes (6).

8. A check valve machining fixture according to claim 1, characterized in that, The lower clamping plate (2) is detachably connected to a fixing sleeve (12) at both ends. A pressure rod (13) is slidably connected inside the fixing sleeve (12). The pressure rod (13) is connected to the fixing sleeve (12) through a spring (14).

9. A check valve machining fixture according to claim 8, characterized in that, One of the fixed sleeves (12) is fixedly connected to a first upper conductive block (15) and a first lower conductive block (16), and the other fixed sleeve (12) is fixedly connected to a second upper conductive block (17) and a second lower conductive block (18). The pressure rod (13) is fixedly connected to a conductive slider (20).

10. A check valve machining fixture according to claim 8, characterized in that, It also includes a warning light, which includes two parallel circuits, one of which is connected in series with the first upper conductive block (15) and the second lower conductive block (18), and the other circuit is connected in series with the first lower conductive block (16) and the second upper conductive block (17).

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