A special clamping device for valve production

Abstract

The present invention relates to the technical field of workpiece punching clamping, and particularly to a special clamping device for valve production. The technical problem is that the existing clamping method has relatively cumbersome steps, which affects the clamping efficiency. Moreover, the three-way valves placed manually are prone to deviation. It is difficult for the existing clamping method to effectively and quickly position and clamp, resulting in inaccurate and unstable subsequent punching. In addition, it is not convenient to lock the clamping parts during the clamping process, which may cause the three-way valves to break away under external force factors, thereby resulting in poor clamping effect. A special clamping device for valve production includes: a support seat; a motor installed on one side of the support seat; a U-shaped frame with a cavity, fixedly connected to one end of the output shaft of the motor and rotatably connected to the support seat. The staff only needs to place and push down the three-way valve, and the air pump can simultaneously hold the clamping state in three directions of the three-way valve, making the operation of the staff more convenient and fast and improving the clamping efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece punching clamping, and particularly to a special clamping device for valve production. Background Art

[0002] During the production of valves, it is necessary to punch the various flange plates of the valves. Before punching, the valves need to be clamped. According to different types, sizes and production process requirements of valves, different designs can be adopted. Common clamping methods are also divided into: mechanical clamping, hydraulic clamping, customized fixtures and pneumatic clamping. Among them, during the clamping process of three-way valves, workers need to first clamp both sides of them, and then clamp the top to achieve the purpose of effective clamping.

[0003] Due to the special shape of the three-way valve, the clamping steps are relatively cumbersome, the clamping is not fast enough, affecting the clamping efficiency, and the three-way valves manually placed by workers are prone to deviation. The existing clamping devices are difficult to effectively and quickly position and clamp the three-way valves, resulting in inaccurate and unstable subsequent punching. Moreover, the current clamping devices are not convenient to lock the clamping parts during the clamping process, resulting in the three-way valves may break away under external force factors, and thus the clamping effect is poor. Summary of the Invention

[0004] In order to overcome the above-mentioned drawbacks, the present invention provides a special clamping device for valve production, which can simultaneously clamp multiple positions of the three-way valve instantly when placing it, so as to fully improve the clamping efficiency, and can effectively and quickly position and clamp the three-way valve to make the subsequent punching more accurate and stable, and can also lock the clamping parts during the clamping process to make the three-way valve not easily fall off due to external force factors, thereby enhancing the clamping effect.

[0005] The technical implementation scheme of the present invention is: a special clamping device for valve production, including:

[0006] A support base;

[0007] A motor, installed on one side of the support base;

[0008] A U-shaped frame with a cavity, fixedly connected to one end of the output shaft of the motor and rotatably connected to the support base;

[0009] Two air pumps, a connecting pipe and a fixing frame installed at the inner bottom of the U-shaped frame. The air inlets of the two air pumps are respectively communicated with the outside of the U-shaped frame, and both sides of the connecting pipe are communicated with the air outlets of the two air pumps;

[0010] Two limiting pipes fixedly connected to the U-shaped frame;

[0011] A triggering member, arranged on the U-shaped frame;

[0012] Three-way valve, placed on the trigger member;

[0013] Two-side clamping mechanisms, arranged on the trigger member and the limit rod;

[0014] Top clamping mechanism, arranged on the two-side clamping mechanisms and the U-shaped frame.

[0015] Optionally, the trigger member includes: a fixed pipe fixedly connected between the U-shaped frame and the fixed bracket, the top of the fixed pipe is communicated with the outside of the U-shaped frame, and air vent holes are opened on both sides; a trigger pipe slidably connected to the fixed pipe, and trigger holes are opened on both sides of the trigger pipe; a tension spring is connected between the bottom of the trigger pipe and the fixed bracket.

[0016] Optionally, the two trigger holes of the trigger pipe respectively correspond to the two air vent holes of the fixed pipe, and the initial positions are not on the same horizontal line.

[0017] Optionally, the two-side clamping mechanisms include: two three-way pipes symmetrically communicated with the two air vent holes of the fixed pipe; four piston cylinders respectively symmetrically communicated with the two sides of the two three-way pipes; piston rods respectively slidably connected in the four piston cylinders; compression springs are respectively connected between the four piston rods and the four piston cylinders; extrusion frames are respectively connected between one ends of the two piston rods on the same side of the two three-way pipes; two rotating clamping frames are respectively rotatably connected to the two limit pipes, and cavities are respectively opened inside and communicated with the limit pipes; rotating slide rails respectively fixedly connected to the bottoms of the four clamping frames, and the two ends of the two extrusion frames are respectively slidably connected to the four rotating slide rails.

[0018] Optionally, the top clamping mechanism includes: two moving rods respectively slidably connected to the two sides inside the U-shaped frame; two moving clamping frames respectively slidably connected to the two moving rods; four moving slide rails respectively fixedly connected to the bottoms of the two sides of the two moving rods; four pull rods respectively fixedly connected to the four rotating clamping frames, and one ends of the four pull rods are respectively slidably connected to the four moving slide rails.

[0019] Optionally, a positioning and clamping mechanism is further included, which is used to position and clamp the horizontal position of the three-way valve, and is arranged on the three-way pipe, the limit pipe, the moving clamping frame and the rotating clamping frame. The positioning and clamping mechanism includes: shunt pipes respectively communicated with the mutually remote sides of the two three-way pipes, and the two shunt pipes are respectively communicated with the bottoms of the two limit pipes; positioning pipes respectively slidably connected to the shunt pipes, and positioning holes are opened on the tops of the two positioning pipes, and the positioning holes of the two positioning pipes respectively correspond to the intersections of the two shunt pipes themselves; two limit rods respectively fixedly connected to the mutually remote ends of the two positioning pipes; sliding frames respectively fixedly connected to the bottoms of the two moving clamping frames, and the two sides of the bottoms of the two sliding frames are respectively slidably connected to the two sides of the two limit rods; clamping members arranged on the inner sides of the four rotating clamping frames.

[0020] Optionally, the clamping member includes: a plurality of clamping sleeves slidably connected inside the four rotating clamping frames; ball bearings respectively embedded inside the plurality of clamping sleeves, and a part of the ball bearings protrudes from the clamping sleeves.

[0021] Optionally, the inner wall of the clamping sleeve is provided with a rubber surface.

[0022] Optionally, the ball bearings are made of rubber.

[0023] Optionally, a locking mechanism is further included, which is used to lock the moving clamping frame after clamping the three-way valve and is arranged on the moving clamping frame. The locking mechanism includes: limit blocks respectively fixed on both sides of one of the moving clamping frames; lock rods respectively rotatably connected to the two limit blocks; torsion springs respectively connected between the two lock rods and the two limit blocks; lock catches respectively fixed on both sides of the other moving clamping frame; there are two limit blocks, lock rods, torsion springs and lock catches respectively.

[0024] The beneficial effects of the present invention are as follows: 1. In the present invention, air is pumped into the communication pipe and the trigger pipe by an air pump; when punching the flange of the three-way valve is required, the three-way valve pushes the trigger pipe downward to move downward so that the trigger hole communicates with the ventilation hole, and the air pump will instantaneously pump gas into the piston cylinder to push the piston rod so that the extrusion frame moves, and then the rotating clamping frame rotates to clamp both sides of the three-way valve through the rotating slide rail; while the rotating clamping frame rotates, the moving rod and the moving clamping frame move through the pull rod and the moving slide rail, and the two moving clamping frames will form a closed loop to clamp the top of the three-way valve; in this way, the staff only needs to place and push the three-way valve downward, and the air pump can hold the clamping state in three directions of the three-way valve synchronously, making the operation of the staff more convenient and fast and improving the clamping efficiency.

[0025] 2. When the horizontal position of the three-way valve is not accurate enough, the moving clamping frame will shift, causing the positioning pipe to move, and the intersection of the positioning hole and the shunt pipe will be staggered and no longer communicate, and air will not be pumped into the limit pipe. The staff can move the three-way valve horizontally back and forth randomly and slowly to make the positioning pipe move. When the intersection of the positioning hole and the shunt pipe communicates, gas will quickly be pumped into the cavity of the rotating clamping frame to squeeze the clamping sleeve to move, and then squeeze the ball bearings. Under the action of the rubber material of the ball bearings and the rubber surface of the clamping sleeve, the ball bearings will no longer rotate, and then the three-way valve is clamped, enabling subsequent stable punching of the three-way valve, thereby enhancing the clamping effect. At this time, it will be difficult for the staff to move the three-way valve horizontally at a fixed position. In this way, after clamping, the staff only needs to move the three-way valve horizontally back and forth slowly to make the three-way valve automatically position and clamp, further improving the clamping efficiency.

[0026] 3. During the clamping process, the movement of the two moving clamping brackets will drive the limit blocks, lock rods, and lock catches to move respectively. The lock catch will first squeeze the lock rod to rotate, twisting the torsion spring. After the clamping is completed, the lock catch no longer squeezes the lock rod, and the reset of the torsion spring drives the lock rod to reset. The lock rod will hook one side of the lock catch, thereby locking the clamping mechanisms on both sides and the top clamping mechanism, making the clamping more stable and further enhancing the clamping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0028] Figure 2 is a partial three-dimensional structural schematic diagram of the present invention in the clamping state.

[0029] Figure 3 is a sectional three-dimensional structural schematic diagram of the present invention.

[0030] Figure 4 is a partial sectional three-dimensional structural schematic diagram of the present invention.

[0031] Figure 5 is a partial sectional three-dimensional structural schematic diagram of the U-shaped frame and the trigger member of the present invention.

[0032] Figure 6 is a sectional three-dimensional structural schematic diagram of the air pump and the connecting pipe of the present invention.

[0033] Figure 7 is a three-dimensional structural schematic diagram of the trigger member and the clamping mechanisms on both sides of the present invention.

[0034] Figure 8 is a partial sectional three-dimensional structural schematic diagram of the limit pipe and the rotating clamping bracket of the present invention.

[0035] Figure 9 is a partial sectional three-dimensional structural schematic diagram of the clamping mechanisms on both sides and the fixed pipe of the present invention.

[0036] Figure 10 is a disassembled three-dimensional structural schematic diagram of the trigger member and the clamping mechanisms on both sides of the present invention.

[0037] Figure 11 is a three-dimensional structural schematic diagram of the top clamping mechanism and the rotating clamping bracket of the present invention.

[0038] Figure 12 is a three-dimensional structural schematic diagram of the positioning and clamping mechanism of the present invention.

[0039] Figure 13 is a partial sectional three-dimensional structural schematic diagram of the positioning and clamping mechanism of the present invention.

[0040] Figure 14 is a partial sectional three-dimensional structural schematic diagram of the rotating clamping bracket and the clamping member of the present invention.

[0041] Figure 15 This is a partially disassembled three-dimensional structural schematic diagram of the clamping sleeve and the ball of the present invention.

[0042] Figure 16 For the present invention Figure 2 An enlarged three-dimensional structural schematic diagram of A in the present invention.

[0043] Figure 17 This is a partially disassembled three-dimensional structural schematic diagram of the locking mechanism of the present invention.

[0044] The markings of the various components in the drawings are as follows: 101: support base, 102: motor, 103: U-shaped frame, 21: air pump, 22: connecting pipe, 23: fixing frame, 24: limiting pipe, 3: triggering member, 31: fixing pipe, 311: ventilation hole, 32: triggering pipe, 321: triggering hole, 33: tension spring, 0: three-way valve, 41: three-way pipe, 42: piston cylinder, 43: piston rod, 44: compression spring, 45: extrusion frame, 46: rotating clamping frame, 47: rotating slide rail, 51: moving rod, 52: moving clamping frame, 53: moving slide rail, 54: pull rod, 61: shunt pipe, 62: positioning pipe, 621: positioning hole, 63: limiting rod, 64: sliding frame, 65: clamping member, 651: clamping sleeve, 652: ball, 71: limiting block, 72: locking rod, 73: torsion spring, 74: lock catch. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] Embodiment 1: A special clamping device for valve production, as Figures 1-14 shown, includes:

[0047] Support base 101;

[0048] Motor 102, installed on one side of the support base 101;

[0049] A U-shaped frame 103 with a cavity, connected to one end of the output shaft of the motor 102 through a coupling and rotatably connected to the support base 101;

[0050] Two air pumps 21, a connecting pipe 22 and a fixing bracket 23 installed at the inner bottom of the U-shaped frame 103. The two air pumps 21 are respectively located on both sides of the connecting pipe 22. The air inlets of the two air pumps 21 are respectively communicated with the outside of the U-shaped frame 103. Both sides of the connecting pipe 22 are communicated with the air outlets of the two air pumps 21;

[0051] Two limiting pipes 24 welded to the U-shaped frame 103;

[0052] A trigger member 3 provided on the U-shaped frame 103;

[0053] A three-way valve 0 placed on the trigger member 3;

[0054] Two side clamping mechanisms for clamping both sides of the three-way valve 0, provided on the trigger member 3 and the limiting rod 63;

[0055] A top clamping mechanism for clamping the top of the three-way valve 0, provided on the two side clamping mechanisms and the U-shaped frame 103.

[0056] The trigger member 3 includes: a fixed pipe 31 welded between the U-shaped frame 103 and the fixing bracket 23. The top of the fixed pipe 31 is communicated with the outside of the U-shaped frame 103, and ventilation holes 311 are opened on both sides; a trigger pipe 32 slidably connected to the fixed pipe 31. Trigger holes 321 are opened on both sides of the trigger pipe 32, and the top is used to place the three-way valve 0; a tension spring 33 is connected between the bottom of the trigger pipe 32 and the fixing bracket 23.

[0057] The two trigger holes 321 of the trigger pipe 32 respectively correspond to the two ventilation holes 311 of the fixed pipe 31, and the initial positions are not on the same horizontal line. The two trigger holes 321 are used to respectively vent the gas pumped by the air pump 21 through the two ventilation holes 311 out of the fixed pipe 31 when triggered.

[0058] The two-side clamping mechanisms include: two three-way pipes 41 symmetrically connected to two ventilation holes 311 of the fixed pipe 31; four piston cylinders 42 symmetrically connected to both sides of the two three-way pipes 41 respectively, with two piston cylinders 42 on the same three-way pipe 41 as a group; piston rods 43 slidably connected to the four piston cylinders 42 respectively, with the two piston rods 43 on the same group of piston cylinders 42 symmetrically arranged, and the piston rods 43 on the two groups of piston cylinders 42 symmetrically arranged; compression springs 44 connected between the four piston rods 43 and the four piston cylinders 42 respectively; extrusion frames 45 connected between one ends of the two piston rods 43 on the same side of the two three-way pipes 41, with the two extrusion frames 45 symmetrically arranged; two rotating clamping frames 46 rotatably connected to the two limiting pipes 24 respectively, with cavities inside and communicating with the limiting pipes 24, with the two rotating clamping frames 46 on the same limiting pipe 24 as a group, the two groups of rotating clamping frames 46 symmetrically arranged and located on both sides of the three-way valve 0, and the two rotating clamping frames 46 in the same group symmetrically arranged for clamping both sides of the three-way valve 0; rotating slide rails 47 welded to the bottoms of the four clamping frames respectively, with both ends of the two extrusion frames 45 slidably connected to the four rotating slide rails 47 respectively, and the extrusion frames 45 are used to extrude the rotating slide rails 47 to make the rotating clamping frames 46 rotate.

[0059] The top clamping mechanism includes: two moving rods 51 slidably connected to both sides inside the U-shaped frame 103 respectively; two moving clamping frames 52 slidably connected to the two moving rods 51 respectively, located on both sides of the top of the three-way valve 0 respectively for clamping the top of the three-way valve 0; four moving slide rails 53 welded to the bottoms of both sides of the two moving rods 51 respectively; four pull rods 54 welded to the four rotating clamping frames 46 respectively, with one ends of the four pull rods 54 slidably connected to the four moving slide rails 53 respectively, and the pull rods 54 are used to extrude the moving slide rails 53 to make the moving clamping frames 52 move.

[0060] First, the staff starts the air pump 21, and the air pump 21 pumps the air outside the U-shaped frame 103 into the connecting pipe 22 and the trigger pipe 32; when punching the flange of the three-way valve 0, the staff first places the three-way valve 0 on the top of the trigger pipe 32, making the three-way valve 0 located in the recess of the U-shaped frame 103. Immediately afterwards, the staff presses the three-way valve 0 to push the trigger pipe 32 downward, and the tension spring 33 is stretched; the downward movement of the trigger pipe 32 makes the trigger hole 321 move downward to the position of the same horizontal line as the ventilation hole 311, and then the trigger hole 321 will communicate with the ventilation hole 311. At this time, the air pump 21 will instantaneously pump the gas through the trigger hole 321 and the ventilation hole 311 into the three-way pipe 41 and the piston cylinder 42. The gas will push the piston rod 43 to move, and the compression spring 44 is compressed. The movement of the piston rod 43 will drive the two extrusion frames 45 to move away from each other. The movement of the extrusion frames 45 will make the rotating clamping frames 46 rotate towards the two sides of the three-way valve 0 through the extrusion rotating slide rail 47. The rotation of the four rotating clamping frames 46 will respectively clamp the two sides of the three-way valve 0 in pairs, thereby clamping the two sides of the three-way valve 0;

[0061] When the rotating clamping frame 46 rotates, it will drive the pull rod 54 to rotate. The rotation of the pull rod 54 will pull the two moving rods 51 to move towards each other through the moving slide rail 53. The movement of the moving rods 51 will drive the moving clamping frames 52 to move towards the top of the three-way valve 0 and contact. The two moving clamping frames 52 will form a closed loop to clamp the top of the three-way valve 0, thereby clamping the top of the three-way valve 0; when punching other flanges of the three-way valve 0, the staff can control the motor 102 to drive the U-shaped frame 103 to rotate, thereby adjusting the angle of the flange of the three-way valve 0 for easy operation;

[0062] In this way, the staff only needs to place and push the three-way valve 0 downward, and the air pump 21 can simultaneously hold the clamping state in three directions of the three-way valve 0, making the operation of the staff more convenient and fast and improving the clamping efficiency;

[0063] After punching, the staff turns off the air pump 21 and releases the air. The gas no longer pushes the piston rod 43, and the compression spring 44 resets to drive the piston rod 43 and the extrusion frame 45 to reset. The reset of the extrusion frame 45 makes the rotating clamping frame 46 reset and no longer clamp the two sides of the three-way valve 0 through the rotating slide rail 47. At the same time, the reset of the rotating clamping frame 46 makes the moving rod 51 and the moving clamping frame 52 reset through the pull rod 54 and the moving slide rail 53. The reset of the moving clamping frame 52 no longer clamps the top of the three-way valve 0. The three-way valve 0 no longer presses the trigger pipe 32, and the tension spring 33 resets to drive the trigger pipe 32 to reset, thereby ejecting the three-way valve 0. The staff can remove the punched three-way valve 0.

[0064] Embodiment 2: On the basis of Embodiment 1, as Figures 3-15 shown, it further includes a positioning and clamping mechanism for positioning and clamping the lateral position of the three-way valve 0, which is arranged on the three-way pipe 41, the limiting pipe 24, the moving clamping bracket 52 and the rotating clamping bracket 46. The positioning and clamping mechanism includes: shunt pipes 61 respectively communicated with the mutually remote sides of the two three-way pipes 41, and the two shunt pipes 61 are respectively communicated with the bottoms of the two limiting pipes 24; positioning pipes 62 respectively slidably connected to the shunt pipes 61 for positioning the lateral position of the three-way valve 0, and positioning holes 621 are opened at the tops of the two positioning pipes 62, and the positioning holes 621 of the two positioning pipes 62 respectively correspond to the intersections of the two shunt pipes 61 themselves. The positioning holes 621 are used to block the air flow in the shunt pipes 61 before positioning and no longer block the shunt pipes 61 after positioning; limiting rods 63 respectively welded to the mutually remote ends of the two positioning pipes 62, a total of two; sliding brackets 64 respectively welded to the bottoms of the two moving clamping brackets 52, and the two sides of the bottoms of the two sliding brackets 64 are respectively slidably connected to the two sides of the two limiting rods 63; clamping members 65 arranged on the inner sides of the four rotating clamping brackets 46 for clamping the three-way valve 0 after positioning.

[0065] The clamping member 65 includes: a plurality of clamping sleeves 651 slidably connected to the inner sides of the four rotating clamping brackets 46; balls 652 respectively embedded inside the plurality of clamping sleeves 651, and a part of the balls 652 protrudes from the clamping sleeves 651. The balls 652 are used to prevent the three-way valve 0 from being scratched during positioning and moving.

[0066] The inner wall of the clamping sleeve 651 is provided with a rubber surface for preventing the balls 652 from slipping during clamping.

[0067] The balls 652 are made of rubber material for preventing slipping between the balls 652 and the three-way valve 0 during clamping and avoiding damaging the surface of the three-way valve 0 during clamping.

[0068] During the process of clamping the three-way valve 0, the rotation of the rotating clamping bracket 46 drives the clamping member 65 to rotate and contact the outer sides of the two sides of the three-way valve 0. The movement of the moving clamping bracket 52 drives the sliding bracket 64 to slide on the limiting rod 63. Part of the air pumped into the three-way pipe 41 by the air pump 21 will enter the shunt pipe 61, and then be pumped into the cavity of the rotating clamping bracket 46 through the positioning pipe 62, the positioning hole 621 and the limiting pipe 24. The air in the cavity of the rotating clamping bracket 46 will squeeze a plurality of clamping sleeves 651 to move towards the surface of the three-way valve 0, thereby squeezing the balls 652. Under the action of the rubber material of the balls 652 and the rubber surface of the clamping sleeves 651, the balls 652 no longer rotate, thereby clamping the three-way valve 0, so as to stably punch the three-way valve 0 subsequently, thereby enhancing the clamping effect;

[0069] When the horizontal position of the three-way valve 0 placed by the staff is not precise enough, during the process of the moving clamping bracket 52 clamping the three-way valve 0, there will be a lateral shift. The lateral movement of the moving clamping bracket 52 will drive the limit rod 63 to move laterally through the sliding bracket 64. The movement of the limit rod 63 will drive the positioning tube 62 to move, so that the intersection of the positioning hole 621 and the shunt tube 61 is staggered and no longer connected. As a result, the air in the shunt tube 61 will not be pumped into the limit tube 24. At this time, the ball 652 can rotate freely in the clamping sleeve 651. The staff can move the three-way valve 0 back and forth laterally at will and slowly for a short distance. The lateral movement of the three-way valve 0 drives the positioning tube 62 to move laterally through the moving clamping bracket 52, the sliding bracket 64 and the limit rod 63. When the intersection of the positioning hole 621 and the shunt tube 61 is connected, the gas will quickly be pumped into the cavity of the rotating clamping bracket 46 through the positioning hole 621, the intersection of the shunt tube 61 and the limit tube 24, and then quickly clamp both sides of the three-way valve 0. At this time, it will be difficult for the staff to move the three-way valve 0 laterally at a fixed position. In this way, after clamping, the staff only needs to move the three-way valve 0 back and forth laterally slowly to make the three-way valve 0 automatically positioned and clamped, further improving the clamping efficiency.

[0070] Embodiment 3: On the basis of Embodiment 2, as Figures 1-17 shown, it further includes a locking mechanism for locking the moving clamping bracket 52 after clamping the three-way valve 0. It is arranged on the moving clamping bracket 52. The locking mechanism includes: limit blocks 71 welded to both sides of one of the moving clamping brackets 52 respectively; lock rods 72 rotatably connected to the two limit blocks 71 respectively; torsion springs 73 connected between the two lock rods 72 and the two limit blocks 71 respectively; lock catches 74 welded to both sides of the other moving clamping bracket 52 respectively. There are two limit blocks 71, lock rods 72, torsion springs 73 and lock catches 74 respectively.

[0071] During the clamping process, the movement of the two moving clamping brackets 52 will drive the limit blocks 71, lock rods 72 and lock catches 74 to move respectively. The lock catch 74 will first squeeze the lock rod 72 to rotate, and the torsion spring 73 is twisted. After the clamping is completed, the lock catch 74 no longer squeezes the lock rod 72, and the torsion spring 73 resets to drive the lock rod 72 to reset. The lock rod 72 will hook one side of the lock catch 74, thereby locking the clamping mechanisms on both sides and the top clamping mechanism, and further making the clamping more stable, thus further enhancing the clamping effect; when the punching is completed, the staff only needs to unlock the lock rod 72 after the air pump 21 deflates. Immediately afterwards, the clamping mechanisms on both sides and the top clamping mechanism will be instantly unlocked and reset.

[0072] The above embodiments are provided for those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited by the above embodiments, but should be the maximum scope that conforms to the innovative features mentioned in the claims.

Claims

1. A special clamping device for valve production, characterized in that: Comprising: Support base (101); Motor (102), installed on one side of the support base (101); U-shaped frame (103) with a cavity, fixedly connected to one end of the output shaft of the motor (102) and rotatably connected to the support base (101); Two air pumps (21), a connecting pipe (22) and a fixing bracket (23) installed at the inner bottom of the U-shaped frame (103), the air inlets of the two air pumps (21) are respectively communicated with the outside of the U-shaped frame (103), and both sides of the connecting pipe (22) are communicated with the air outlets of the two air pumps (21); Two limit pipes (24) fixedly connected to the U-shaped frame (103); Trigger member (3), arranged on the U-shaped frame (103); Three-way valve (0), placed on the trigger member (3); Two-side clamping mechanisms, arranged on the trigger member (3) and the limit rod (63); Top clamping mechanism, arranged on the two-side clamping mechanisms and the U-shaped frame (103); The trigger member (3) includes: a fixed pipe (31) fixedly connected between the U-shaped frame (103) and the fixing bracket (23), the top of the fixed pipe (31) is communicated with the outside of the U-shaped frame (103), and ventilation holes (311) are opened on both sides; a trigger pipe (32) slidably connected to the fixed pipe (31), trigger holes (321) are opened on both sides of the trigger pipe (32); a tension spring (33) is connected between the bottom of the trigger pipe (32) and the fixing bracket (23); The two-side clamping mechanisms include: two three-way pipes (41) symmetrically communicated with the two ventilation holes (311) of the fixed pipe (31); four piston cylinders (42) symmetrically communicated with both sides of the two three-way pipes (41); piston rods (43) respectively slidably connected in the four piston cylinders (42); compression springs (44) are respectively connected between the four piston rods (43) and the four piston cylinders (42); extrusion frames (45) are connected between one ends of the two piston rods (43) on the same side of the two three-way pipes (41); two rotating clamping frames (46) are rotatably connected to both of the two limit pipes (24), and cavities are opened inside and communicated with the limit pipes (24); rotating slide rails (47) respectively fixedly connected to the bottoms of the four clamping frames, and both ends of the two extrusion frames (45) are slidably connected to the four rotating slide rails (47); The two trigger holes (321) of the trigger pipe (32) respectively correspond to the two ventilation holes (311) of the fixed pipe (31), and the initial positions are not on the same horizontal line; The top clamping mechanism includes: two moving rods (51) respectively slidably connected to both sides inside the U-shaped frame (103); two moving clamping frames (52) respectively slidably connected to the two moving rods (51); four moving slide rails (53) respectively fixedly connected to the bottoms on both sides of the two moving rods (51); four pull rods (54) respectively fixedly connected to the four rotating clamping frames (46), and one ends of the four pull rods (54) are respectively slidably connected to the four moving slide rails (53).

2. The special clamping device for valve production according to claim 1, characterized in that: It further includes a positioning and clamping mechanism for positioning and clamping the lateral position of the three-way valve (0), which is arranged on the three-way pipe (41), the limit pipe (24), the moving clamping bracket (52) and the rotating clamping bracket (46). The positioning and clamping mechanism includes: shunt pipes (61) respectively communicated with the mutually remote sides of the two three-way pipes (41), and the two shunt pipes (61) are respectively communicated with the bottoms of the two limit pipes (24); positioning pipes (62) respectively slidably connected to the shunt pipes (61), and positioning holes (621) are formed at the tops of the two positioning pipes (62), and the positioning holes (621) of the two positioning pipes (62) respectively correspond to the intersections of the two shunt pipes (61) themselves; limit rods (63) respectively fixed to the mutually remote ends of the two positioning pipes (62), a total of two; sliding brackets (64) respectively fixed to the bottoms of the two moving clamping brackets (52), and the two sides of the bottoms of the two sliding brackets (64) are respectively slidably connected to the two sides of the two limit rods (63); clamping members (65) arranged on the inner sides of the four rotating clamping brackets (46).

3. A special clamping device for valve production according to claim 2, characterized in that: The clamping member (65) includes: a plurality of clamping sleeves (651) slidably connected to the inner sides of the four rotating clamping brackets (46); balls (652) respectively embedded inside the plurality of clamping sleeves (651), and a part of the balls (652) protrudes from the clamping sleeves (651).

4. A special clamping device for valve production according to claim 3, characterized in that: The inner wall of the clamping sleeve (651) is provided with a rubber surface.

5. The special clamping device for valve production according to claim 3, characterized in that: The ball (652) is made of rubber material.

6. The special clamping device for valve production according to claim 3, characterized in that: It further includes a locking mechanism for locking the moving clamping bracket (52) after clamping the three-way valve (0), which is arranged on the moving clamping bracket (52). The locking mechanism includes: limit blocks (71) respectively fixed to both sides of one of the moving clamping brackets (52); lock rods (72) respectively rotatably connected to the two limit blocks (71); torsion springs (73) are respectively connected between the two lock rods (72) and the two limit blocks (71); lock catches (74) respectively fixed to both sides of the other moving clamping bracket (52); there are two limit blocks (71), lock rods (72), torsion springs (73) and lock catches (74) respectively.

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