Clamp for welding connecting piece in radial direction of pipe fitting

Abstract

The utility model belongs to the technical field of clamp manufacturing, and particularly relates to a clamp for welding a connecting piece in the radial direction of a pipe fitting, the clamp comprises a base, the base is provided with a common chuck, a first clamping part, a second clamping part, a first driving piece and a second driving piece, and the common chuck is vertically arranged on the base; the first driving part drives the first clamping part to be matched with the top end of the common chuck to execute clamping action, the second driving part drives the second clamping part to be matched with the side wall of the common chuck to execute clamping action, and a limiting ejector rod is movably arranged on the portion, on one side of a connecting line segment between the common chuck and the first clamping part, of the base. The limiting ejector rod is perpendicular to the clamping face, matched with the second clamping part, of the common chuck. The problem of how to repeatedly use the adjusted clamp after one-time measurement so as to weld the assembly composed of the connecting piece and the pipe fitting in batches is solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fixture manufacturing, and particularly relates to a fixture for radially welding a connecting piece on a pipe. BACKGROUND

[0002] In the process of radially welding a part on a pipe, the position of the connecting piece on the pipe workpiece needs to be accurately found, which includes the axial position and the arc position on the circumferential surface, that is, the pipe cannot rotate, and two fixtures need to be used in the prior art, one for clamping the pipe and the other for clamping the connecting piece, and then the relative fixation between the two fixtures is ensured. However, in this way, the relative position between the two clamps needs to be adjusted according to the shape and size of the pipe and the shape and size of the part during clamping, and before welding the tubular workpiece and the connecting piece each time, the position point of the connecting piece welded on the pipe needs to be measured and marked to ensure the position of the connecting piece on the pipe workpiece. SUMMARY

[0003] The application aims at the defects of the prior art, adopts a common chuck cooperating with two clamping parts and a limiting jack, and designs a fixture for radially welding a connecting piece on a pipe, which can fix the pipe and the connecting piece together at the same time, and after one adjustment, the fixture does not need to be repeatedly adjusted and can clamp the workpiece for welding for multiple times, and how to repeatedly use the adjusted fixture after one measurement to batch weld the combination of the connecting piece and the pipe.

[0004] To achieve the above object, the application provides the following technical scheme:

[0005] A fixture for radially welding a connecting piece on a pipe comprises a base, a common chuck, a first clamping part, a second clamping part, a first driving member and a second driving member are arranged on the base, the common chuck is vertically arranged on the base, the first driving member drives the first clamping part to cooperate with the top end of the common chuck to perform a clamping action, the second driving member drives the second clamping part to cooperate with the side wall of the common chuck to perform a clamping action, and a limiting jack is movably arranged on one side of the connecting line segment between the common chuck and the first clamping part on the base, and the limiting jack is perpendicular to the clamping surface of the common chuck and the second clamping part.

[0006] Preferably, the top of the common chuck is provided with a V-shaped groove, the limiting jack is perpendicular to the plane where the V shape of the V-shaped groove is located, the first clamping part is located above the V-shaped groove, and the projection of the second clamping part on the plane where the V shape of the V-shaped groove is located is located at a predetermined distance from the V shape of the V-shaped groove.

[0007] Preferably, the limiting top rod comprises a rod body and a column, the column is vertically arranged on the base, a screw hole is arranged on the column, a thread is arranged on the rod body, and the thread is matched with the screw hole.

[0008] Preferably, the device further comprises a top disc, the top disc is arranged on one end of the rod body which is close to the common chuck, and a projection of the top disc in a plane where a V-shaped groove is located intersects with a projection of the V-shaped groove in the plane.

[0009] Preferably, the projection of the top disc in the plane where the V-shaped groove is located surrounds the projection of the V-shaped groove in the plane.

[0010] Preferably, the first driving member comprises a rotary cylinder, the rotary cylinder is vertically arranged on the base, an execution end of the rotary cylinder is upward, and the execution end of the rotary cylinder is fixedly connected to one end of the first clamping part which is away from the common chuck.

[0011] Preferably, the second driving member comprises a servo cylinder, a mounting seat, and a connecting rod, the mounting seat is fixedly arranged on the base, the servo cylinder is fixedly arranged on the mounting seat, a piston rod of the servo cylinder is parallel to an upper surface of the base, the mounting seat is provided with a mounting rod on a side which is away from the servo cylinder and is close to the piston rod, a connecting line segment between the mounting rod and the servo cylinder is parallel to an axis of the second clamping part, one end of the mounting rod which is away from the mounting seat is rotationally connected to one end of the connecting rod, the other end of the connecting rod is rotationally connected to two ends of the second clamping part, one end of the second clamping part which is away from the common chuck is rotationally connected to one end of the piston rod, and a rotation axis of the connecting rod and a rotation axis of the second clamping part are both perpendicular to the second clamping part and the piston rod.

[0012] Compared with the prior art, the application has the following beneficial effects:

[0013] 1. The application adopts a common chuck matched with two clamping parts and a limiting top rod, and designs a clamp for radially welding a connecting piece to a pipe, so that the pipe and the connecting piece can be fixed together at the same time, and after one-time adjustment, the clamp does not need to be repeatedly adjusted and can realize multiple clamping of the workpiece for welding, thereby solving the problem of how to repeatedly use the adjusted clamp after one-time measurement to batch weld the combination of the connecting piece and the pipe.

[0014] 2. After the V-shaped groove is arranged, the pipe is prevented from rolling in the common chuck during the process that the first clamping part approaches the common chuck. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of this application;

[0016] Figure 2 for Figure 1 A structural diagram of the back side;

[0017] Figure 3 This is a schematic diagram of the structure for clamping pipe fittings and connectors during the operation of this application;

[0018] Figure 4 for Figure 3 A structural diagram of the back side;

[0019] Figure 5 This is a schematic diagram of the assembly formed after pipe fittings and connectors are welded together.

[0020] Figure 6 A schematic diagram showing the structure with a nut on the rod body.

[0021] The components are: 1. Base; 2. Common chuck; 3. First clamping part; 4. Second clamping part; 5. V-groove; 6. Rod body; 7. Column; 8. Top plate; 9. Rotary cylinder; 10. Servo cylinder; 11. Mounting seat; 12. Connecting rod; 13. Mounting rod; 14. Pipe fitting; 15. Connecting piece; 16. Assembly; 17. Nut. Detailed Implementation

[0022] like Figures 1-6 As shown, a clamp for radially welding connectors to pipe fittings includes a base 1. The base 1 is provided with a common clamp 2, a first clamping part 3, a second clamping part 4, a first driving member, and a second driving member. The common clamp 2 is vertically disposed on the base 1. The first driving member drives the first clamping part 3 to cooperate with the top end of the common clamp 2 to perform a clamping action. The second driving member drives the second clamping part 4 to cooperate with the side wall of the common clamp 2 to perform a clamping action. A limiting rod is movably disposed on one side of the connecting line segment between the common clamp 2 and the first clamping part 3 on the base 1. The limiting rod is perpendicular to the clamping surface where the common clamp 2 and the second clamping part 4 cooperate.

[0023] Before use, the distance between the end of the limiting jack and the common chuck 2 is adjusted according to the distance between the connecting piece 15 and one end of the pipe piece 14 in the process requirement of the product, that is, the distance between the connecting piece 15 and one end of the pipe piece 14 is equal to the distance between the end of the limiting jack and the common chuck 2, and then the limiting jack is locked on the base 1 so that the limiting jack cannot move on the base 1, and then the pipe piece 14 can be placed on the top of the first clamping part 3, and one end of the pipe piece 14 is in contact with the limiting jack towards the common chuck 2, and then the first clamping part 3 is driven by the first driving part to move towards the common chuck 2 to jointly clamp one end of the pipe piece 14 with the top of the common chuck 2, and then the connecting piece 15 is in contact with the outer circumferential surface of the pipe piece 14 for welding the connecting piece 15, and then the second clamping part 4 is driven by the second driving part to jointly clamp the connecting piece 15 with the common chuck 2 to realize the relative fixation of the pipe piece 14 and the connecting piece 15, and then welding can be performed. Such a setting mode can clamp the pipe piece 14 and the connecting piece 15, and since the position of the limiting jack has been adjusted once before use, the position of the limiting jack does not need to be adjusted again when the same batch of assemblies 16 is generated. Compared with using two mechanical hands, such a setting saves one clamping part because the common chuck 2 can jointly clamp with the first clamping part 3 and the second clamping part 4 at the same time, thereby saving production materials. Each time, only the pipe piece 14 needs to be clamped by the first clamping part 3 and the common chuck 2, and the end of the pipe piece 14 needs to be in contact with the limiting jack.

[0024] Preferably, the second driving part drives the second clamping part 4 to jointly clamp the connecting piece 15 with the side of the common chuck 2 away from the limiting jack. Such a setting makes the movement of the second clamping part 4 not affect the action of the limiting jack.

[0025] As a preferred mode, the top of the common chuck 2 is provided with a V-shaped groove 5, the limiting jack is perpendicular to the plane where the V-shaped groove 5 is located, the first clamping part 3 is located above the V-shaped groove 5, and the projection of the second clamping part 4 on the plane where the V-shaped groove 5 is located is at a predetermined distance from the V-shaped groove 5. By setting the V-shaped groove 5, the pipe piece 4 is prevented from rolling on the common chuck 2 during the movement of the first clamping part 3 towards the common chuck 2.

[0026] As a preferred mode, the limiting top rod comprises a rod body 6 and a column 7, the column 7 is vertically arranged on the base 1, the column 7 is provided with a screw hole, the rod body 6 is provided with a thread matched with the screw hole, and the rod body 6 is matched with the screw hole between both ends. After adjusting the distance between the rod body 6 and the common chuck 2, the screw hole on the column 7 is matched with the rod body 6, so as to prevent the axial movement of the rod body 6.

[0027] Preferably, the rod body 6 is coaxially provided with a nut 17 between the screw hole and the common chuck 2, so that after adjusting the distance between the rod body 6 and the common chuck 2, the rod body 6 is locked on the column 7 by the nut 17, preventing the movement of the rod body 6 on the column 7.

[0028] As a preferred mode, it further comprises a top disc 8, which is arranged at one end of the rod body 6 towards the common chuck 2, and the projection of the top disc 8 in the plane of the V-shaped groove 5 intersects the projection of the V-shaped groove 5 in the plane of the V-shaped groove 5. After setting the top disc 8, the area of the end of the pipe 4 receiving the abutment is increased, thereby reducing the error of the distance between the connecting piece 15 and the end of the pipe 14.

[0029] As a preferred mode, the projection of the top disc 8 in the plane of the V-shaped groove 5 surrounds the projection of the V-shaped groove 5 in the plane of the V-shaped groove 5.

[0030] As a preferred mode, the first driving member comprises a rotary cylinder 9, which is vertically arranged on the base 1, the execution end of the rotary cylinder 9 is upward, and the execution end of the rotary cylinder 9 is fixedly connected to one end of the first clamping part 3 away from the common chuck 2.

[0031] As a preferred mode, the second driving member comprises a servo cylinder 10, a mounting base 11, and a connecting rod 12, the mounting base 11 is fixedly arranged on the base 1, the servo cylinder 10 is fixedly arranged on the mounting base 11, a piston rod of the servo cylinder 10 is parallel to an upper surface of the base 1, the mounting base 11 is provided with a mounting rod 13 away from the servo cylinder 10 on a side facing a free end of the piston rod, a connecting line segment between the mounting rod 13 and the servo cylinder 10 is parallel to an axis of the second clamping part 4, one end of the mounting rod 13 away from the mounting base 11 is rotatably connected to one end of the connecting rod 12, the other end of the connecting rod 12 is rotatably connected between two ends of the second clamping part 4, one end of the piston rod is rotatably connected to one end of the second clamping part 4 away from the common chuck 2, and rotating shafts of the connecting rod 12 and the second clamping part 4 are both perpendicular to the second clamping part 4 and the piston rod. After the above arrangement, the cooperation between the second clamping part 4 and the common chuck 2 is controlled by the servo cylinder 10, when the servo cylinder 10 is contracted, one end of the second clamping part 4 away from the common chuck 2 rotates towards the servo cylinder 10, so that the second clamping part 4 releases the clamping on the connecting piece 15; on the contrary, when the servo cylinder 10 is elongated, one end of the second clamping part 4 away from the common chuck 2 rotates away from the servo cylinder 10, so that one end of the second clamping part 4 towards the common chuck 2 rotates towards the common chuck 2, and then clamps the connecting piece 15.

Claims

1. A fixture for radially welding a fitting to a pipe, characterized by, The utility model provides a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common 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clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common chuck and first clamping part and second clamping part are driven to carry out clamping action, and the utility model discloses a kind of common 2. A fixture for radially welding a fitting to a pipe according to claim 1, wherein ​ 3. A fixture for radially welding a fitting to a pipe according to claim 2, wherein ​ 4. A fixture for radially welding a fitting to a pipe according to claim 3, wherein ​ 5. A fixture for radially welding a fitting to a pipe according to claim 4, wherein, ​ 6. A fixture for radially welding a fitting to a pipe according to claim 1, wherein, ​ 7. A fixture for radially welding a fitting to a pipe according to claim 1, wherein The second driving member comprises a servo cylinder (10), a mounting base (11), and a connecting rod (12), the mounting base (11) is fixedly arranged on the base (1), the servo cylinder (10) is fixedly arranged on the mounting base (11), the piston rod of the servo cylinder (10) is parallel to the upper surface of the base (1), the mounting base (11) is provided with a mounting rod (13) on the side facing the free end of the piston rod and away from the servo cylinder (10), the connecting line segment between the mounting rod (13) and the servo cylinder (10) is parallel to the axis of the second clamping part (4), one end of the connecting rod (12) is rotatably connected to one end of the mounting rod (13) away from the mounting base (11), the other end of the connecting rod (12) is rotatably connected between the two ends of the second clamping part (4), one end of the piston rod is rotatably connected to one end of the second clamping part (4) away from the common chuck (2), and the rotation axes of the connecting rod (12) and the second clamping part (4) are both perpendicular to the second clamping part (4) and the piston rod.

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