Automatic welding fixture for metal flexible pipe joint

Abstract

The present application relates to an automatic welding fixture for a metal flexible pipe joint, and relates to the field of welding equipment, which comprises a lower clamp block and an upper clamp block hinged to the lower clamp block, wherein the lower clamp block and the upper clamp block are provided with semicircular holes on opposite sides, and the lower clamp block and the upper clamp block are both rotatably connected with clamp rings, wherein the clamp rings are provided with semicircular convex surfaces, and the arc-shaped sides of the convex surfaces are provided with driving teeth; and the upper clamp block and the lower clamp block are both provided with driving mechanisms meshedly connected to the driving teeth. The present application has the effect of meeting the welding requirements of pipe fittings and joints and improving welding efficiency.

Description

Technical Field

[0001] The present application relates to the field of welding equipment, and in particular to an automatic welding fixture for a metal flexible pipe joint. Background Art

[0002] At present, the dust-proof connecting pipes for connecting electrical cables in chemical enterprises, textile factories and coal mines mostly use rolling or extrusion to connect the joints and hoses at both ends. The connection between the joints and hoses of this structure is not firm, and the sealing performance is poor. It is very easy to fall off in places with dust, oil and water splashing and large vibration in the factory. In addition, in the welding schemes in the prior art, due to the small size of the pipe fittings, the efficiency of manual welding is low. At the same time, due to the different welding techniques of the staff, there is also the phenomenon of non-standard welding, which leads to leakage welding, crooked joints, etc., and cannot meet the welding requirements of pipe fittings and joints. Utility Model Content

[0003] In order to meet the welding requirements of pipe fittings and joints and improve welding efficiency, the present application provides an automatic welding fixture for metal flexible pipe joints.

[0004] The present application provides an automatic welding fixture for a metal flexible pipe joint using the following technical solution:

[0005] An automatic welding fixture for a metal flexible pipe joint comprises a lower clamping block and an upper clamping block hinged to the lower clamping block, wherein the lower clamping block and the upper clamping block are provided with semicircular holes on opposite sides thereof, and the lower clamping block and the upper clamping block are both rotatably connected with clamping rings, wherein the clamping rings are provided with semicircular convex surfaces, and the arcuate sides of the convex surfaces are provided with driving teeth; and the upper clamping block and the lower clamping block are both provided with driving mechanisms meshingly connected to the driving teeth.

[0006] A further technical solution is that a receiving cavity for placing a driving mechanism is provided in the upper clamping block and the lower clamping block; the driving mechanism includes a motor, a driving gear fixedly arranged on the output shaft of the motor and two driven gears rotatably connected in the receiving cavity, and the two driven gears are simultaneously meshed and connected to the driving gear and the driving teeth.

[0007] A further technical solution is that trapezoidal grooves are provided on the upper clamping block and the lower clamping block, and a trapezoidal ring is provided on the outer side of the clamping ring, and the trapezoidal ring is slidably connected in the trapezoidal groove.

[0008] This application has the following beneficial technical effects:

[0009] The pipe fitting is placed on the lower clamp block and clamped in the clamp ring. The upper clamp block is closed so that the clamp ring of the upper clamp block is clamped in the upper half of the pipe fitting. At this time, the pipe fitting can be fixed. At the same time, the motors on the upper and lower clamp blocks are started. The clamp rings in the upper and lower clamp blocks can be rotated and moved through the transmission action of the gears, thereby driving the pipe fitting to rotate circumferentially, which facilitates welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0011] Figure 2 It is a schematic diagram of the decomposition structure of an embodiment of the present application.

[0012] Figure numerals: 11, upper clamping block; 12, lower clamping block; 2, accommodating cavity; 21, sealing plate; 3, semicircular hole; 31, trapezoidal groove; 4, clamping ring; 41, convex surface; 42, driving tooth; 43, trapezoidal ring; 5, driving mechanism; 51, motor; 52, driving gear; 53, driven gear. DETAILED DESCRIPTION

[0013] The technical solution in this application is further described in detail below in conjunction with the accompanying drawings.

[0014] The present application embodiment discloses an automatic welding fixture for a metal flexible pipe joint. Figure 1 and Figure 2 The clamp includes a lower clamp block 12 and an upper clamp block 11 hinged to the lower clamp block 12, and semicircular holes 3 are provided on the opposite sides of the lower clamp block 12 and the upper clamp block 11. The lower clamp block 12 and the upper clamp block 11 are rotatably connected with a clamp ring 4, and the clamp ring 4 is provided with a semicircular convex surface 41, and the arc-shaped side of the convex surface 41 is provided with a driving tooth 42; the upper clamp block 11 and the lower clamp block 12 are provided with a driving mechanism 5 meshingly connected to the driving tooth 42.

[0015] The upper clamp block 11 and the lower clamp block 12 are provided with a receiving cavity 2 for placing the driving mechanism 5 to drive the clamp ring 4 to rotate and move. The upper clamp block 11 and the lower clamp block 12 are both bolted with a sealing plate 21 with the same profile to shield the receiving cavity 2.

[0016] Specifically, the driving mechanism 5 is provided with two sets, which are respectively arranged in the accommodating cavity 2 of the upper clamp block 11 and the lower clamp block 12, that is, the structures of the upper clamp block 11 and the lower clamp block 12 are completely symmetrical. The driving mechanism 5 includes a driving motor 51, a driving gear 52 and two driven gears 53, wherein the driving motor 51 is fixedly arranged in the accommodating cavity 2, the two driven gears 53 are rotatably connected in the accommodating cavity 2, and the two driven gears 53 are meshed with the driving teeth 42 on the convex surface 41; the driving gear 52 is fixedly arranged on the output shaft of the driving motor 51, and is meshed with the two driven gears 53.

[0017] The motor 51 is powered on and rotates, driving the driving gear 52 and the driven gear 53 to rotate. The two driven gears 53 rotate in the same direction, which can drive the cam to rotate, and then drive the semicircular clamping ring 4 to rotate and move. That is, during the rotation process, the clamping ring 4 will rotate from the upper clamping block 11 to the lower clamping block 12, and then rotate to the upper clamping block 11 again, so as to drive the pipe to complete a rotation.

[0018] Since the clamp ring 4 is semicircular in shape, after the clamp ring 4 moves out of the upper clamp block 11 and engages with the driven gear 53 of the lower clamp block 12, it will detach from the driven gear 53 of the upper clamp block 11 after a certain distance, so that the upper clamp block 11 and the lower clamp block 12 can work together to make the two semicircular clamp rings 4 move in a circular motion.

[0019] Reference Figure 2 The upper clamp block 11 and the lower clamp block 12 are both provided with a trapezoidal groove 31 , and the outer side of the clamp ring 4 is provided with a trapezoidal ring 43 , and the trapezoidal ring 43 is slidably connected in the trapezoidal groove 31 .

[0020] The trapezoidal ring 43 is integrally formed with the clamping ring 4, and the clamping ring 4 is slidably connected in the trapezoidal groove 31 through the trapezoidal ring 43, which can prevent the clamping ring 4 from falling off, and after starting the motor 51, the clamping ring 4 can be rotated and moved along the semi-circular trapezoidal groove 31. That is, when the upper clamping block 11 is closed on the lower clamping block 12, the clamping ring 4 can rotate the clamped pipe fitting; when the upper clamping block 11 is rotated and opened along the hinge axis, starting the motor 51 can make the clamping ring 4 separate from the upper clamping block 11 and the lower clamping block 12, so that the clamping ring 4 of different thicknesses can be replaced according to the different sizes of the pipe fittings, so that it can be suitable for pipe fittings of different diameters.

[0021] The implementation principle of the embodiment of the present application is:

[0022] The pipe fitting is placed on the lower clamping block 12 and clamped in the clamping ring 4. The upper clamping block 11 is closed so that the clamping ring 4 of the upper clamping block 11 is clamped in the upper half of the pipe fitting. At this time, the pipe fitting can be fixed. At the same time, the motor 51 on the upper clamping block 11 and the lower clamping block 12 is started. Through the transmission action of the gears, the clamping ring 4 in the upper clamping block 11 and the lower clamping block 12 can be rotated and moved, thereby driving the pipe fitting to rotate circumferentially, thereby facilitating welding.

[0023] It should be noted that all directional indications (such as up, down, left, right, front and back) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "setting", etc. should be understood in a broad sense. For example, "setting" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic welding fixture for a metal flexible pipe joint, characterized in that: The invention comprises a lower clamping block (12) and an upper clamping block (11) hinged to the lower clamping block (12); semicircular holes (3) are arranged on the opposite sides of the lower clamping block (12) and the upper clamping block (11); clamping rings (4) are rotatably connected to the lower clamping block (12) and the upper clamping block (11); the clamping ring (4) is provided with a semicircular convex surface (41); and driving teeth (42) are arranged on the arc-shaped side of the convex surface (41); and the upper clamping block (11) and the lower clamping block (12) are provided with driving mechanisms (5) meshingly connected to the driving teeth (42).

2. The automatic welding fixture for a metal flexible pipe joint according to claim 1, characterized in that: The upper clamping block (11) and the lower clamping block (12) are both provided with a receiving cavity (2) for accommodating a driving mechanism (5); the driving mechanism (5) comprises a motor (51), a driving gear (52) fixedly arranged on an output shaft of the motor (51), and two driven gears (53) rotatably connected in the receiving cavity (2); the two driven gears (53) are simultaneously meshed and connected to the driving gear (52) and the driving teeth (42).

3. The automatic welding fixture for a metal flexible pipe joint according to claim 1, characterized in that: The upper clamping block (11) and the lower clamping block (12) are both provided with a trapezoidal groove (31), and the outer side of the clamping ring (4) is provided with a trapezoidal ring (43), and the trapezoidal ring (43) is slidably connected in the trapezoidal groove (31).

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