A stable clamping device and method for gate valve production

Abstract

The present application relates to the production field of gate valve, especially to a stable clamping device and method for gate valve production. The existing metal clamping device is not stable enough for clamping the valve body blank. The present application provides a stable clamping device and method for gate valve production, which comprises a main frame and the like. Two support frames are installed on the main frame, and a placing frame is installed on the main frame. The valve body is placed between the support frames and the placing frame. An electric push rod is installed on one side of the main frame. A clamping mechanism is arranged on the main frame and connected with the telescopic rod of the electric push rod. A swing mechanism is arranged on the main frame. The present application removes part of the small protrusions on the surface of the valve body through the support frame and the clamping block, and then the support frame, the placing frame, the contact frame and the clamping block jointly clamp and limit the valve body. In this way, part of the small protrusions on the valve body can be removed, so that the support frame and the clamping block can be more fully attached to the valve body, and the valve body can be clamped more fully.

Description

TECHNICAL FIELD

[0001] The present application relates to the production field of gate valve, especially to a stable clamping device and method for gate valve production. BACKGROUND

[0002] In the production process of the gate valve, the valve body needs to be turned, and the valve body needs to be clamped during turning. Moreover, a large amount of heat is generated during turning, which causes the temperature of the valve body to rise, and the rubber clamping device is easy to melt and adhere to the surface of the valve body. Therefore, the rubber cannot be used to directly clamp the valve body, and a metal clamping device is generally used to clamp the valve body. However, the surface of the valve body blank has many small protrusions, which may fall off during turning, resulting in unstable clamping of the valve body blank, and thus reducing the machining precision of the valve body. Moreover, the protrusions have different protrusion degrees, which may cause insufficient contact between the valve body and the clamping device, and thus result in unstable clamping of the valve body blank. SUMMARY

[0003] To solve the problem of unstable clamping of the valve body blank by the existing metal clamping device, the present application provides a stable clamping device and method for gate valve production, which can remove part of the small protrusions on the surface of the valve body blank and more fully clamp the valve body.

[0004] The technical scheme of the present application is as follows: a stable clamping device and method for gate valve production, comprising a main frame, a support frame, a placement frame, an electric push rod, a clamping mechanism and a swinging mechanism. Two support frames are installed on the main frame. The placement frame is installed on the main frame. The valve body is placed between the support frames and the placement frame. The electric push rod is installed on one side of the main frame. The clamping mechanism is provided on the main frame and is used to clamp the valve body. The clamping mechanism is connected with the telescopic rod of the electric push rod. The swinging mechanism is provided on the main frame and is used to push the valve body to swing.

[0005] In one embodiment, the top of each support frame is arc-shaped.

[0006] In one embodiment, the clamping mechanism comprises a moving frame, a contact frame, a sliding frame, a clamping block and a tension spring. The moving frame is slidably connected to the main frame. One end of the moving frame is fixedly connected with the telescopic rod of the electric push rod. The other end of the moving frame is installed with the contact frame. Two sliding frames are slidably connected to the moving frame and are symmetrically arranged. The clamping block is installed at the bottom of each sliding frame. Two tension springs are connected between the sliding frames and the moving frame.

[0007] In one embodiment, the swing mechanism includes a push plate, a lifting frame, a transmission plate, a protrusion, and a return spring. The push plate is installed at one end of the moving frame, the lifting frame is slidably connected to the placement frame, the transmission plate is slidably connected to the lower part of the main frame, the transmission plate is provided with a protrusion, and a return spring is connected between the main frame and the transmission plate.

[0008] In one embodiment, a contact mechanism is also included. The contact mechanism is mounted on the movable frame and connected to the transmission plate. The contact mechanism includes a bent rod, a rack frame, a fixed plate, a contact rod, a rotating screw, a rubber top block, and a long shaft gear. Two bent rods are slidably connected to the main frame, and one end of each bent rod is fixed to the transmission plate. Two rack frames are slidably connected to the side of the movable frame. Each rack frame has a rectangular through hole, through which the bent rod passes. Two fixed plates are mounted on the side of the movable frame. Four contact rods are slidably connected to the movable frame, with two contact rods forming a group. The two groups of contact rods pass through two clamping blocks respectively. Two rotating screws are threadedly connected to each of the two fixed plates. One end of each of the four rotating screws is rotatably connected to a rubber top block, which contacts the contact rod. Long shaft gears are mounted on each of the four rotating screws, with two long shaft gears forming a group. Each group of long shaft gears meshes with a rack frame.

[0009] In one embodiment, a clamping mechanism is also included. The clamping mechanism is mounted on the sliding frame and includes a rubber rod, a fixed rod, a swing rod, and a torsion spring. Four rubber rods are installed on the sliding frame, with two rubber rods forming a group. Two fixed rods are installed on each sliding frame. A swing rod is rotatably connected to each of the four fixed rods. A torsion spring connects the fixed rods and the swing rods.

[0010] In one embodiment, it also includes locking blocks, with two locking blocks mounted on each of the two support frames.

[0011] In one embodiment, each of the four card blocks has a card slot.

[0012] In one embodiment, ceramic friction plates are also included, with ceramic friction plates mounted on both the contact holder and the placement holder.

[0013] A method of using a stabilizing clamping device for gate valve production includes the following steps:

[0014] S1. The operator places the valve body to be processed between the support frame and the placement frame, starts the electric push rod, the protrusion squeezes the lifting frame to move upward, the lifting frame pushes the valve body to swing upward, the small protrusions on the lower surface of the valve body rub against the support frame, the small protrusions on the upper surface of the valve body rub against the clamping block, and the support frame and the clamping block together grind away some of the small protrusions on the surface of the valve body.

[0015] S2, the moving frame is in contact with the clamping block, the supporting frame, the placing frame, the contact frame and the clamping block jointly clamp and limit the valve body;

[0016] S3, the moving frame drives the rubber rod to move downwards, the rubber rod pushes the swing rod to swing, the torsion spring is twisted, the four swing rods are in contact with the valve body, and the flange plates on both sides of the valve body are in contact with the two swing rods respectively;

[0017] S5, the operator controls the electric push rod to extend and reset.

[0018] Beneficial effects: 1, through the supporting frame and the clamping block, the valve body surface is ground to remove part of the small protrusions, then the supporting frame, the placing frame, the contact frame and the clamping block jointly clamp and limit the valve body, so that part of the small protrusions of the valve body can be removed, the supporting frame and the clamping block can be more fully attached to the valve body, and the valve body can be fully clamped.

[0019] 2, when the clamping block moves downwards, the contact rod is in contact with the upper side of the valve body, the moving frame drives the rotating lead screw and the rubber top block to move downwards, the contact rod is in contact with the upper side of the valve body, and the rubber top block continues to move downwards to push the contact rod to be in more sufficient contact with the upper side of the valve body by friction, when the push plate extrudes the transmission plate to move, the rack frame drives the long shaft gear and the rotating lead screw to rotate, the threads on the fixed plate extrude the long shaft gear and the rotating lead screw to move, the rotating lead screw drives the rubber top block to move, the force of the rubber top block extruding the contact rod increases, the friction between the rubber top block and the contact rod increases, the rubber top block can more fully limit the contact rod, and the contact rod can limit the valve body, so that the contact rod can adapt to the concave-convex shape of the upper surface of the valve body and better clamp and limit the valve body.

[0020] 3, when the clamping block moves downwards, the contact rod is in contact with the upper side of the valve body, the moving frame drives the rubber rod to move downwards, then the rubber rod continues to push the swing rod to swing, the four swing rods are in contact with the valve body, and the flange plates on both sides of the valve body are in contact with the two swing rods respectively, so that when the operator performs turning processing on the valve body, the swing rod can support the flange plates on both sides of the valve body, which is beneficial to reducing the position deviation of the valve body during turning processing and can more fully clamp and limit the valve body. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic diagram of the present application.

[0022] Figure 2 It is a first partial three-dimensional structure schematic diagram of the present application.

[0023] Figure 3 It is a second partial three-dimensional structure schematic diagram of the present application.

[0024] Figure 4Figure 1 is a first perspective view of the contact mechanism of the present application.

[0025] Figure 5 Figure 2 is a second perspective view of the contact mechanism of the present application.

[0026] Figure 6 Figure 3 is a first partially separated perspective view of the present application.

[0027] Figure 7 Figure 4 is a second partially separated perspective view of the present application.

[0028] Figure 8 Figure 5 is a first partially perspective view of the holding mechanism of the present application.

[0029] Figure 9 Figure 6 is a second partially perspective view of the holding mechanism of the present application.

[0030] Figure 10 Figure 7 is a perspective view of the clamping block of the present application.

[0031] Figure 11 Figure 8 is a perspective view of the ceramic friction plate of the present application.

[0032] In the figure, 1 is the main frame, 2 is the support frame, 3 is the placing frame, 4 is the valve body, 5 is the electric push rod, 61 is the moving frame, 62 is the contact frame, 621 is the sliding frame, 63 is the clamping block, 64 is the tension spring, 71 is the push plate, 72 is the lifting frame, 73 is the transmission plate, 731 is the protruding block, 74 is the return spring, 81 is the bent rod, 82 is the rack frame, 83 is the fixed plate, 84 is the contact rod, 85 is the rotating lead screw, 851 is the rubber top block, 86 is the long shaft gear, 91 is the rubber rod, 92 is the fixed rod, 94 is the swinging rod, 95 is the torsion spring, 101 is the clamping block, and 11 is the ceramic friction plate. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope and application scope of the present application are not limited.

[0034] Example 1: A stable clamping device and method for gate valve production, as shown in Figures 1-4As shown, including a main frame 1, support frame 2, rack 3, electric push rod 5, clamping mechanism and swing mechanism, the main frame 1 is installed with two support frame 2, the top of two support frame 2 is arc structure, the main frame 1 is installed with rack 3, valve body 4 is placed between support frame 2 and rack 3, the main frame 1 is installed with electric push rod 5, electric push rod 5 is vertical setting, the main frame 1 is equipped with clamping mechanism, clamping mechanism is used for clamping valve body 4, clamping mechanism is connected with the telescopic rod of electric push rod 5, the main frame 1 is equipped with swing mechanism, swing mechanism is used for pushing valve body 4 swing.

[0035] Clamping mechanism includes moving frame 61, contact frame 62, sliding frame 621, clamp block 63 and tension spring 64, the main frame 1 is slidably connected with moving frame 61, one end of moving frame 61 is fixedly connected with the telescopic rod of electric push rod 5, the other end of moving frame 61 is installed with contact frame 62, two sliding frames 621 are slidably connected on moving frame 61, two sliding frames 621 are symmetrically arranged, clamp block 63 is installed at the bottom of sliding frame 621, two clamp blocks 63 are used for clamping valve body 4, two sliding frames 621 are connected with two tension springs 64 between moving frame 61.

[0036] Swing mechanism includes push plate 71, lifting frame 72, transmission plate 73, protruding block 731 and reset spring 74, one end of moving frame 61 is installed with push plate 71, the lower end of push plate 71 is provided with an inclined surface, lifting frame 72 is slidably connected on rack 3, transmission plate 73 is slidably connected on the lower part of main frame 1, protruding block 731 is provided on transmission plate 73, protruding block 731 is used for pushing lifting frame 72 to move upward, reset spring 74 is connected between main frame 1 and transmission plate 73.

[0037] At first, the operator places the valve body 4 to be processed between the support frame 2 and the placing frame 3, and the operator starts the electric push rod 5, the telescopic rod of the electric push rod 5 is retracted to drive the moving frame 61, the contact frame 62, the sliding frame 621, the clamping block 63 and the pushing plate 71 to move downward, the two clamping blocks 63 are in contact with the upper side of the valve body 4, the moving frame 61, the sliding frame 621, the clamping block 63, the contact frame 62 and the pushing plate 71 continue to move downward, the tension spring 64 is stretched, then the lower inclined surface of the pushing plate 71 is in contact with the transmission plate 73, the pushing plate 71 continues to move downward to press the transmission plate 73 and the protruding block 731 to move, the return spring 74 is stretched, the protruding block 731 presses the lifting frame 72 to move upward, the lifting frame 72 pushes the valve body 4 to swing upward, the tiny protrusions on the lower surface of the valve body 4 rub against the support frame 2, the tiny protrusions on the upper surface of the valve body 4 rub against the clamping block 63, and the support frame 2 and the clamping block 63 together grind off part of the tiny protrusions on the surface of the valve body 4, then the protruding block 731 is separated from the lifting frame 72, the lifting frame 72 moves downward to reset under the action of its own gravity, then the transmission plate 73 is in contact with the side surface of the pushing plate 71, the transmission plate 73 stops moving, then the contact frame 62 presses the valve body 4 to rotate downward to reset, then the moving frame 61 is in contact with the clamping block 63, and the support frame 2, the placing frame 3, the contact frame 62 and the clamping block 63 together clamp and position the valve body 4, thereby removing part of the tiny protrusions on the valve body 4, so that the support frame 2 and the clamping block 63 can be more fully attached to the valve body 4, thereby fully clamping the valve body 4, then the operator processes the valve body 4 by turning, and when the valve body 4 no longer needs to be clamped, the operator controls the electric push rod 5 to extend to reset, the electric push rod 5 drives the moving frame 61 to move upward to reset, the tension spring 64 drives the clamping block 63 to move upward to reset, and the return spring 74 drives the transmission plate 73 to move reversely to reset.

[0038] Example 2: Based on example 1, as Figures 3-7As shown, the contact mechanism is arranged on the moving frame 61 and connected with the transmission plate 73, and is used for better clamping the valve body 4. The contact mechanism comprises two bent rods 81, two rack frames 82, two fixed plates 83, four contact rods 84, four rotating lead screws 85, four rubber top blocks 851 and two long shaft gears 86. Two bent rods 81 are slidably connected to the main frame 1, and one end of each of the two bent rods 81 is fixedly connected with the transmission plate 73. Two rack frames 82 are slidably connected to the upper side of the moving frame 61, and a rectangular through hole is formed in each of the two rack frames 82. The two rack frames 82 are horizontally arranged. The bent rods 81 pass through the rectangular through holes of the rack frames 82. Two fixed plates 83 are arranged on the upper side of the moving frame 61. Four contact rods 84 are slidably connected to the moving frame 61, and two contact rods 84 form a group. The two groups of contact rods 84 pass through the two clamping blocks 63, respectively. Two rotating lead screws 85 are threadedly connected to each of the two fixed plates 83. One end of each of the four rotating lead screws 85 is rotatably connected with a rubber top block 851. The rubber top block 851 is in contact with the contact rod 84. The rubber top block 851 is used for pushing the contact rod 84 to move downward. The contact rod 84 is used for clamping and positioning the valve body 4. A long shaft gear 86 is arranged on each of the four rotating lead screws 85, and two long shaft gears 86 form a group. Each group of long shaft gears 86 is in meshing connection with the rack frame 82.

[0039] When the clamping block 63 moves downward, the contact rod 84 is in contact with the upper side of the valve body 4. The two clamping blocks 63 are in contact with the upper side of the valve body 4. The clamping block 63 no longer moves downward. The moving frame 61 continues to move downward, and drives the rack frame 82, the fixed plate 83, the rotating lead screw 85 and the rubber top block 851 to move downward. The contact rod 84 is in contact with the upper side of the valve body 4. The rubber top block 851 continues to move downward and pushes the contact rod 84 to fully contact with the upper side of the valve body 4 through friction. When the pushing plate 71 extrudes the transmission plate 73 to move, the transmission plate 73 drives the bent rod 81 to move. The bent rod 81 is in contact with the inner side of the rectangular through hole of the rack frame 82 which is close to the sliding frame 621. The bent rod 81 continues to move and pushes the rack frame 82 to move. The rack frame 82 drives the long shaft gear 86 and the rotating lead screw 85 to rotate. The threads on the fixed plate 83 extrude the long shaft gear 86 and the rotating lead screw 85 to move. The rotating lead screw 85 drives the rubber top block 851 to move. The force of the rubber top block 851 extruding the contact rod 84 increases. The friction between the rubber top block 851 and the contact rod 84 increases. The rubber top block 851 can more fully position the contact rod 84. Thus, the contact rod 84 can position the valve body 4. The contact rod 84 can adapt to the concave-convex shape of the upper surface of the valve body 4 and better clamp and position the valve body 4.

[0040] In the embodiment 2, the contact mechanism is arranged on the moving frame 61 and connected with the transmission plate 73, and is used for better clamping the valve body 4. The contact mechanism comprises two bent rods 81, two rack frames 82, two fixed plates 83, four contact rods 84, four rotating lead screws 85, four rubber top blocks 851 and two long shaft gears 86. Figures 8-9As shown, the device also comprises a clamping mechanism arranged on the sliding frame 621, which is used to support the flanges on both sides of the valve body 4. The clamping mechanism comprises rubber rods 91, fixed rods 92, swing rods 94 and torsion springs 95. Four rubber rods 91 are arranged on the moving frame 61, two rubber rods 91 form a group. Two fixed rods 92 are arranged on each sliding frame 621. The swing rods 94 are rotatably connected to the four fixed rods 92. The torsion springs 95 are connected between the fixed rods 92 and the swing rods 94. The swing rods 94 are used to clamp the flanges on both sides of the valve body 4.

[0041] When the clamping block 63 moves downward and the contact rod 84 contacts the upper side of the valve body 4, the moving frame 61 continues to move downward, the moving frame 61 drives the rubber rods 91 to move downward, the rubber rods 91 contact the swing rods 94, and then the rubber rods 91 continue to push the swing rods 94 to swing, the torsion springs 95 are twisted, the four swing rods 94 contact the valve body 4, and the flanges on both sides of the valve body 4 contact two swing rods 94 respectively. When the operator performs turning processing on the valve body 4, the swing rods 94 can support the flanges on both sides of the valve body 4, which is beneficial to reduce the position deviation of the valve body 4 during turning processing, and can more fully clamp and position the valve body 4. When the operator controls the electric push rod 5 to extend and reset, the rubber rods 91 are separated from the swing rods 94, and the swing rods 94 are reset in the reverse direction under the action of the rebound of the torsion springs 95.

[0042] In the embodiment 3, as shown in Figure 10 and Figure 11 The device also comprises clamping blocks 101, two clamping blocks 101 are arranged on each support frame 2.

[0043] The device also comprises ceramic friction plates 11, the contact frame 62 and the placing frame 3 are provided with ceramic friction plates 11, and the ceramic friction plates 11 are used to increase the friction force on the valve body 4.

[0044] When the four swing rods 94 contact the valve body 4 and the one ends of the four swing rods 94 are clamped into the clamping blocks 101, the clamping blocks 101 can support the swing rods 94, so that the swing rods 94 can more stably support the valve body 4.

[0045] When the placing frame 3 and the contact frame 62 jointly clamp and support the valve body 4, the two ceramic friction plates 11 jointly frictionally position the valve body 4, thereby more fully supporting the valve body 4.

[0046] The above embodiments are provided for those skilled in the art to implement or use the present application. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present application. Therefore, the protection scope of the present application should not be limited by the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A stable clamping device for the production of gate valves, characterized in that, The utility model provides a valve body automatic clamping and swinging device, including main frame (1), support frame (2), placing rack (3), electric push rod (5), clamping mechanism and swing mechanism, two support frames (2) are installed on main frame (1), placing rack (3) is installed on main frame (1), valve body (4) is placed between support frame (2) and placing rack (3), electric push rod (5) is installed on one side of main frame (1), clamping mechanism is equipped on main frame (1), and clamping mechanism is used to clamp valve body (4), and clamping mechanism is connected with the telescopic rod of electric push rod (5), swing mechanism is equipped on main frame (1), and swing mechanism is used to push valve body (4) swing; The clamping mechanism includes a moving frame (61), a contact frame (62), a sliding frame (621), a clamping block (63), and a tension spring (64), the moving frame (61) is slidably connected to the main frame (1), one end of the moving frame (61) is fixedly connected to the telescopic rod of the electric push rod (5), the other end of the moving frame (61) is installed with the contact frame (62), two sliding frames (621) are slidably connected to the moving frame (61), the two sliding frames (621) are symmetrically arranged, the clamping block (63) is installed at the bottom of each sliding frame (621), and two tension springs (64) are connected between the two sliding frames (621) and the moving frame (61); The swing mechanism includes a pushing plate (71), a lifting frame (72), a transmission plate (73), a protruding block (731), and a reset spring (74), the pushing plate (71) is installed at one end of the moving frame (61), the lifting frame (72) is slidably connected to the placing rack (3), the transmission plate (73) is slidably connected to the lower part of the main frame (1), the protruding block (731) is arranged on the transmission plate (73), and the reset spring (74) is connected between the main frame (1) and the transmission plate (73); The contact mechanism is arranged on the moving frame (61) and connected with the transmission plate (73), and comprises a bent rod (81), a rack frame (82), a fixed plate (83), a contact rod (84), a rotating lead screw (85), a rubber top block (851) and a long shaft gear (86).

2. A stable clamping device for the production of gate valves according to claim 1, characterized in that The top of each support frame (2) is in an arc shape.

3. A stable clamping device for the production of gate valves according to claim 1, characterized in that, The holding mechanism is arranged on the sliding frame (621) and comprises a rubber rod (91), a fixed rod (92), a swing rod (94) and a torsion spring (95).

4. A stable clamping device for the production of gate valves according to claim 1, characterized in that, The two support frames (2) are provided with two clamping blocks (101) respectively.

5. A stabilizing clamp for the production of gate valves according to claim 4, characterized in that, The four clamping blocks (101) are provided with clamping grooves.

6. A stable clamping device for the production of gate valves according to claim 3, characterized in that, The contact frame (62) and the placing frame (3) are provided with ceramic friction plates (11).

7. A method of using a stabilizing clamp for the production of gate valves according to claim 6, characterized in that, The working steps are as follows: S1, the operator places the valve body (4) to be machined between the support frame (2) and the placing frame (3), starts the electric push rod (5), the convex block (731) extrudes the lifting frame (72) to move upward, the lifting frame (72) drives the valve body (4) to swing upward, the tiny protrusions on the lower surface of the valve body (4) are rubbed with the support frame (2), the tiny protrusions on the upper surface of the valve body (4) are rubbed with the clamping block (63), and the support frame (2) and the clamping block (63) jointly remove part of the tiny protrusions on the surface of the valve body (4); S2, the moving frame (61) is in contact with the clamping block (63), and the support frame (2), the placing frame (3), the contact frame (62) and the clamping block (63) jointly clamp and limit the valve body (4). S3, the mobile frame (61) drives the rubber rod (91) to move downward, the rubber rod (91) pushes the swing rod (94) to swing, the torsion spring (95) is twisted, four swing rods (94) are in contact with the valve body (4), and the flanges on both sides of the valve body (4) are in contact with two swing rods (94) respectively; S5, the operator controls the electric push rod (5) to extend and reset.

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